WO2015100648A1

WO2015100648A1 - Signaling domain reception method and apparatus, and signaling domain sending method and apparatus

Info

Publication number: WO2015100648A1
Application number: PCT/CN2013/091183
Authority: WO
Inventors: 陆苏; 丁志明; 树贵明
Original assignee: 华为终端有限公司
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2015-07-09

Abstract

Disclosed are a signaling domain reception method and apparatus, and a signaling domain sending method and apparatus. The method comprises: receiving a first part of a signaling domain by using a first modulation mode; after the first part is received, determining a modulation mode used in a second part of the signaling domain; and when a second modulation mode is used in the second part, using information modulated from the second part by using the second modulation mode as information carried in the second part, the second modulation mode being a fourth-order or higher-order modulation. By means of the embodiments of the present invention, more information can be carried in a signaling domain of a preamble of a data unit.

Description

Signaling domain receiving method, device and signaling domain transmitting method and device

Technical field

The present invention relates to the field of communications, and in particular, to a signaling domain receiving method, apparatus, and signaling domain transmitting method and apparatus. Background technique

Currently, the IEEE 802.il standards organization is actively discussing how to develop a next-generation Wireless Local Area Networks (WLAN) standard and set up a research group for High Efficiency WLAN (HEW). Compared to IEEE802.11a, IEEE802.11g, IEEE802.11n, and IEEE802.11ac, the new standard is likely to incorporate new features, such as: Uplink Multi-User Multi-Input Multi-Output , UL MU MIMO) technology, Orthogonal Frequency Division Multiplexing Access (OFDMA) technology. These new features require the Preamble in the data unit to carry more information.

The signaling fields in the existing preamble are all using Binary Phase Shift Keying (BPSK) modulation. With BPSK modulation, the signaling domain can carry less information. Taking an OFDM system with a channel bandwidth of 20 MHz as an example, the High Throughput Signal (HT-SIG) in the preamble of the HT-Mixed Format data unit in the IEEE 802.11n specification can only be used at most. Carrying 48 bits of information, and IEEE 802.11ac's Very High Throughput Signal A (VHT-SIG-A) can only carry up to 48 bits of information.

It can be seen that the signaling of the data unit preamble can carry too little information. Summary of the invention

The embodiments of the present invention provide a signaling domain receiving method, a device, and a signaling domain sending method and apparatus, which can solve the problem that the signaling of the data unit preamble can be carried too little.

In a first aspect, an embodiment of the present invention provides a signaling domain receiving method, including: Receiving a first portion of the signaling domain in a first modulation manner;

After receiving the first part, determining a modulation mode adopted by the second part of the signaling domain; and when the second part adopts a second modulation mode, passing the second part by the second modulation mode The demodulated information is used as information carried by the second part; wherein the second modulation mode is fourth order or more than fourth order modulation.

In a first possible implementation manner of the first aspect, the determining, by using the modulation mode, the second part of the signaling domain, includes:

Determining, according to the Orthogonal Frequency Division Multiplexing (OFDM) technique in the second part of the signaling domain, a modulation mode employed by the second portion of the signaling domain; or

And demodulating the OFDM symbol in the second part of the signaling domain, and determining a modulation mode adopted by the second part of the signaling domain according to the demodulated content.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining, by the OFDM symbol in the second part of the signaling domain, the signaling domain The second part uses modulation methods, including:

Determining that a first OFDM symbol in the second part of the signaling domain is mapped to a location on the constellation, and determining a second of the signaling domain according to a position of the first OFDM symbol mapped onto the constellation a partially adopted modulation method; wherein, when the position of the first OFDM symbol mapped onto the constellation diagram is not 0 on the horizontal coordinate axis, and the coordinate value of the vertical coordinate axis is not 0, The second part of the signaling domain adopts the second modulation mode; when the first OFDM symbol is mapped to a position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0 or the coordinate value of the vertical coordinate axis is 0. And determining, in the second part of the signaling domain, a third modulation mode, where the third modulation mode includes:

The modulation method adopted by the second part of the signaling domain in the IEEE 802.11n standard; or

The modulation method employed by the second part of the signaling domain in the IEEE 802.11ac standard.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the foregoing aspect, the determining, by using the third modulation mode, the second part of the signaling domain includes:

When the first OFDM symbol is mapped to the position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0, and the coordinate value of the vertical coordinate axis is not 0, the second part of the signaling domain is determined to adopt IEEE802. The modulation method adopted by the second part of the signaling domain in the .11n standard; Determining that the second part of the signaling domain adopts a third modulation manner, further comprising: when the first OFDM symbol is mapped to a position on the constellation diagram, the coordinate value of the horizontal coordinate axis is not 0, and When the coordinate value of the vertical coordinate axis is 0, determining that the second OFDM symbol in the second part of the signaling domain is mapped to a position on the constellation diagram;

When the position of the second OFDM symbol mapped onto the constellation diagram is 0 on the horizontal coordinate axis, and the coordinate value of the vertical coordinate axis is not 0, determining to determine the second part of the signaling domain A modulation scheme employed by the second portion of the signaling domain in the IEEE 802.11ac standard is employed.

With reference to the second possible implementation of the first aspect, or the third possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, The first OFDM symbol in the two parts is mapped to a position on the constellation diagram, including:

Performing analog-to-digital conversion on the first OFDM symbol in the second part of the signaling domain to obtain a signal on a horizontal coordinate axis and a signal on a vertical coordinate axis of the first OFDM symbol;

Obtaining a baseband signal of the signal on the horizontal coordinate axis, and filtering and sampling the baseband signal to obtain a sampling signal of the signal on the horizontal coordinate axis, and determining the horizontal coordinate by the 3-valued determiner Axis decision value;

Obtaining a baseband signal of the signal on the vertical coordinate axis, and filtering and sampling the baseband signal to obtain a sampling signal of the signal on the vertical coordinate axis, and determining the vertical coordinate by the 3-valued determiner Axis decision value;

Determining, according to the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis, the position of the first OFDM symbol mapped onto the constellation diagram; wherein, when the decision value of the horizontal coordinate axis and the judgment of the vertical coordinate axis When the value satisfies the judgment condition, it is determined that the coordinate value of the position where the first OFDM symbol is mapped onto the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value of the vertical coordinate axis is not 0; when the horizontal coordinate When the decision value of the axis and the decision value of the vertical coordinate axis do not satisfy the judgment condition, it is determined that the position of the first OFDM symbol mapped onto the constellation diagram has a coordinate value of 0 on the horizontal coordinate axis or a coordinate value on the vertical coordinate axis. 0; wherein the determining condition includes any one of the following:

The decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are both "+1", the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are both "-1", and the horizontal coordinate axis The decision values of the decision value and the vertical coordinate axis are respectively "-Γ and the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are "-Γ and "+1", respectively. With reference to the second possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, the OFDM symbol in the second part of the signaling domain is demodulated according to the The demodulated content determines a modulation mode adopted by the second part of the signaling domain, including:

Demodulating the OFDM symbol in the second part of the signaling domain by using demodulation of the second modulation mode to obtain a first demodulated content;

The first demodulated content is CRC by the obtained cyclic redundancy code check CRC information, and when the check passes, it is determined that the second part of the signaling domain is adopted as the second modulation mode.

With the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the foregoing aspect, the OFDM symbol in the second part of the signaling domain is demodulated according to the The demodulated content determines a modulation mode adopted by the second part of the signaling domain, and further includes:

Demodulating the OFDM symbol in the second part of the signaling domain by demodulation in a third modulation mode to obtain a second demodulated content;

And performing the CRC on the second demodulation content by using the acquired CRC information. When the verification is passed, the second part of the signaling domain is used as the third modulation mode. The third modulation mode includes:

With reference to the third possible implementation of the first aspect, or the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the method further includes:

And when the second part adopts the third modulation mode, the information obtained by demodulating the third part by the third modulation mode is used as information carried by the second part.

In a second aspect, an embodiment of the present invention provides a signaling domain sending method, including:

Generating a signaling domain, where the first part of the signaling domain adopts a first modulation mode, the second part of the signaling domain adopts a second modulation mode, and the second modulation mode is a fourth-order or more than fourth-order modulation; The first portion and the second portion are separately transmitted to the demodulating device.

In a first possible implementation manner of the second aspect, the second part of the signaling domain is configured to carry information of at least one of: information about a number of antennas used for transmitting a payload of the data unit , CRC information, single The identification information of the transmitting station in the user transmission mode, the identification information of the network to which it belongs, the information indicating the number of streams used by each user in the multi-user transmission mode, and the characteristic parameters of the data unit in which the signaling domain is located.

With reference to the second aspect, in a second possible implementation manner of the second aspect, the first part of the signaling domain is an existing device signaling L-SIG domain, and the second part of the signaling domain is A signaling SIG domain located in the signalling domain after the L-SIG domain.

In a third aspect, an embodiment of the present invention provides a signaling domain receiving apparatus, including: a receiving unit, a determining unit, and a first acquiring unit, where:

The receiving unit is configured to receive the first part of the signaling domain in a first modulation manner;

The determining unit is configured to determine, after the receiving unit receives the first part, a modulation mode adopted by the second part of the signaling field;

The first obtaining unit is configured to: when the determining unit sends the second part adopting the second modulation mode, use the information obtained by demodulating the second part by using the second modulation mode as the first The information carried by the two parts; wherein the second modulation mode is fourth-order or more than four-order modulation.

In a first possible implementation manner of the third aspect, the determining unit is configured to: when the receiving unit receives the first part, according to the orthogonal frequency division in the second part of the signaling domain The multiplexing technique OFDM symbol determines a modulation mode employed by the second portion of the signaling domain; or

The determining unit is configured to: when the receiving unit receives the first part, demodulate an OFDM symbol in a second part of the signaling domain, and determine the signaling according to the demodulated content The modulation method used in the second part of the domain.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the determining unit is configured to: after the receiving unit receives the first part, determine the Mapping a first OFDM symbol in a second portion of the domain to a location on the constellation, and determining a modulation employed by the second portion of the signaling domain based on a location of the first OFDM symbol mapped onto the constellation map Wherein, when the coordinate value of the position where the first OFDM symbol is mapped to the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value of the vertical coordinate axis is not 0, the signaling domain is judged The second part adopts the second modulation mode; when the first OFDM symbol is mapped to a position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0 or the coordinate value of the vertical coordinate axis is 0, The second part of the signaling domain adopts a third modulation mode, where the third modulation mode includes: The modulation method adopted by the second part of the signaling domain in the IEEE 802.11n standard; or

In conjunction with the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the determining unit is further configured to: when the first OFDM symbol is mapped to a location on the constellation The coordinate value of the horizontal coordinate axis is 0, and when the coordinate value of the vertical coordinate axis is not 0, it is judged that the second part of the signaling domain adopts the modulation adopted by the second part of the signaling domain in the IEEE802.11n standard. the way;

The determining unit is further configured to: when the first OFDM symbol is mapped to a position on the constellation diagram, the coordinate value of the horizontal coordinate axis is not 0, and when the coordinate value of the vertical coordinate axis is 0, the Mapping the second OFDM symbol in the second portion of the domain to a position on the constellation; when the second OFDM symbol is mapped to a position on the constellation, the coordinate value on the horizontal axis is 0, and in the vertical coordinate When the coordinate value of the axis is not 0, it is judged that the second part of the signaling domain adopts the modulation mode adopted by the second part of the signaling domain in the IEEE802.11ac standard.

In conjunction with the second possible implementation of the third aspect or the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the determining unit includes

And an analog-to-digital conversion unit, configured to perform analog-to-digital conversion on the first OFDM symbol in the second part of the signaling domain after the receiving unit receives the first part, to obtain the first OFDM symbol The signal on the horizontal axis and the signal on the vertical axis;

a first determining unit, configured to acquire a baseband signal of the signal on the horizontal coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain a sampling signal of a signal on a horizontal coordinate axis, and the third-valued determiner The sampled signal is judged to obtain a decision value of the horizontal coordinate axis;

a second determining unit, configured to acquire a baseband signal of the signal on the vertical coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain a sampling signal of a signal on a vertical coordinate axis, and the third-valued determiner The sampling signal is judged to obtain a decision value of the vertical coordinate axis;

a first determining subunit, configured to determine, according to the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis, a position of the first OFDM symbol mapped onto the constellation diagram; wherein, when the horizontal coordinate axis When the decision value and the decision value of the vertical coordinate axis satisfy the judgment condition, it is determined that the coordinate value of the position of the first OFDM symbol mapped onto the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value of the vertical coordinate axis is not Is 0; when the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are not When the judgment condition is met, it is determined that the position of the first OFDM symbol mapped onto the constellation diagram has a coordinate value of 0 on the horizontal coordinate axis or a coordinate value of 0 on the vertical coordinate axis; wherein the determination condition includes any one of the following item:

The decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are both "+1", the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are both "-1", and the horizontal coordinate axis The decision values of the decision value and the vertical coordinate axis are respectively "-Γ and the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are respectively "-Γ and "+Γ;

And a second determining subunit, configured to determine, according to a location on the constellation map, the first OFDM symbol is mapped to a modulation mode adopted by the second part of the signaling domain.

In conjunction with the first possible implementation of the third aspect, in a fifth possible implementation manner of the third aspect, the determining unit includes:

a first demodulation unit, configured to: after the receiving unit receives the first part, demodulate the OFDM symbol in the second part of the signaling domain by using demodulation of the second modulation mode to obtain a first Demodulation content;

a first check unit, configured to perform CRC on the first demodulated content by using the obtained cyclic redundancy code check CRC information, and when the check passes, determine that the second part of the signaling domain is adopted as a The second modulation method is described.

In conjunction with the fifth possible implementation of the third aspect, in a sixth possible implementation manner of the third aspect, the determining unit further includes:

a second demodulation unit, configured to demodulate the OFDM symbol in the second part of the signaling domain by using demodulation in a third modulation manner to obtain a second demodulation content;

a fourth check unit, configured to perform, by using the acquired CRC information, the second demodulated content

CRC, when the check is passed, the second part of the signaling domain is adopted as the third modulation mode; wherein the third modulation mode includes:

With reference to the third possible implementation of the third aspect, or the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the device further includes:

a second acquiring unit, configured to: when the determining unit determines that the second part adopts the third modulation In the mode, the information obtained by demodulating the third part by the third modulation mode is used as the information carried by the second part.

In a fourth aspect, the embodiment of the present invention provides a signaling domain sending apparatus, including: a generating unit and a sending unit, where:

The generating unit is configured to generate a signaling domain, where a first part of the signaling domain adopts a first modulation mode, a second part of the signaling domain adopts a second modulation mode, and a second modulation mode is a fourth order Or more than four orders of modulation;

The transmitting unit is configured to separately send the first part and the second part generated by the generating unit to the demodulating device.

In a first possible implementation manner of the fourth aspect, the second part of the signaling domain is configured to carry information of at least one of: information about a number of antennas used for transmitting a payload of the data unit CRC information, identification information of the transmitting station in the single-user transmission mode, identification information of the network to which it belongs, information indicating the number of streams used by each user in the multi-user transmission mode, and characteristics of the data unit in which the signaling domain is located parameter.

In a fifth aspect, the present invention provides a signaling domain receiving apparatus, including: a receiver and a memory, and a processor respectively connected to the receiver and the memory, where the memory is used to store a process code, and the processor is used to Calling the program code stored in the memory performs the following operations:

Receiving, by the receiver, a first portion of the signaling domain in a first modulation manner;

After receiving the first part, determining a modulation mode adopted by the second part of the signaling domain; when the second part adopts a second modulation mode, passing the second part by the second modulation mode The information obtained by demodulation is used as information carried by the second part; wherein the second modulation mode is fourth-order or more than fourth-order modulation.

In a first possible implementation manner of the fifth aspect, the performing, by the processor, the operation of determining a modulation mode used by the second part of the signaling domain includes:

Demodulating the OFDM symbol in the second part of the signaling domain, and determining a modulation mode adopted by the second part of the signaling domain according to the demodulated content. With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the determining, by the processor, the OFDM symbol in the second part of the signaling domain The operation of the modulation mode employed in the second part of the signaling domain includes:

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the performing, by the processor, determining that the second part of the signaling domain adopts a third modulation mode , including:

When the first OFDM symbol is mapped to the position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0, and the coordinate value of the vertical coordinate axis is not 0, the second part of the signaling domain is determined to adopt IEEE802. The modulation method adopted by the second part of the signaling domain in the .11n standard;

The operation performed by the processor to determine the second part of the signaling domain adopts a third modulation mode, and further includes:

Determining the second part of the signaling domain when the first OFDM symbol is mapped to a position on the constellation diagram where the coordinate value of the horizontal coordinate axis is not 0, and the coordinate value of the vertical coordinate axis is 0. The second OFDM symbol is mapped to a location on the constellation;

With reference to the second possible implementation of the fifth aspect or the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, The operation of mapping the first OFDM symbol in the second part of the signaling domain to the location on the constellation includes:

The decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are both "+1", the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are both "-1", and the horizontal coordinate axis The decision values of the decision value and the vertical coordinate axis are respectively "-Γ and the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis are "-Γ and "+1", respectively.

With reference to the first possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the processor performs demodulation of the OFDM symbol in the second part of the signaling domain Determining, according to the demodulated content, an operation of a modulation mode adopted by the second part of the signaling domain, including:

The first demodulated content is CRC by the obtained cyclic redundancy code check CRC information, and when the check passes, it is determined that the second part of the signaling domain is adopted as the second modulation mode. With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the processor performs demodulation of the OFDM symbol in the second part of the signaling domain Determining, according to the demodulated content, the operation of the modulation mode adopted by the second part of the signaling domain, further comprising:

In conjunction with the third possible implementation of the fifth aspect, or the sixth possible implementation of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the processor is further configured to perform the following operations:

In a sixth aspect, an embodiment of the present invention provides a signaling domain sending apparatus, including: a transmitter and a memory, and a processor respectively connected to the transmitter and the memory, where the memory is used to store a process code, and the processing The program code for calling the memory storage performs the following operations:

Generating a signaling domain, where the first part of the signaling domain adopts a first modulation mode, the second part of the signaling domain adopts a second modulation mode, and the second modulation mode is a fourth-order or more than fourth-order modulation; The transmitter is configured to separately send the first portion and the second portion to a demodulation device.

In a first possible implementation manner of the sixth aspect, the second part of the signaling domain is configured to carry information of at least one of: information about a number of antennas used for transmitting a payload of the data unit CRC information, identification information of the transmitting station in the single-user transmission mode, identification information of the network to which it belongs, information indicating the number of streams used by each user in the multi-user transmission mode, and characteristics of the data unit in which the signaling domain is located parameter.

In the above technical solution, the first part of the signaling domain is received in a first modulation manner; After the first part, determining a modulation mode adopted by the second part of the signaling domain; and when the second part adopts the second modulation mode, demodulating the second part by the second modulation mode The information is information carried by the second part; wherein the second modulation mode is fourth order or more than fourth order modulation. The signaling domain of the data unit preamble can carry more information, because the above-mentioned signaling domain adopts fourth-order or more-order fourth-order modulation, and the BPSK modulation is used in the prior art. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without any creative work.

1 is a schematic flowchart of a signaling domain receiving method according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of another signaling domain receiving method according to an embodiment of the present invention; An optional character mapping diagram;

FIG. 4 is a schematic diagram of an optional judgment provided by an embodiment of the present invention; FIG.

FIG. 5 is a schematic flowchart diagram of a signaling domain sending method according to an embodiment of the present invention;

6 is a schematic diagram of a signaling domain transmission method according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a signaling domain receiving apparatus according to an embodiment of the present invention; FIG. 8 is a schematic structural diagram of another signaling domain receiving apparatus according to an embodiment of the present invention; FIG. 10 is a schematic structural diagram of another signaling domain receiving apparatus according to an embodiment of the present invention; FIG. 11 is a schematic diagram of a signaling domain sending apparatus according to an embodiment of the present invention; FIG. 12 is a schematic structural diagram of another signaling domain receiving apparatus according to an embodiment of the present invention; FIG. 13 is a schematic structural diagram of another signaling domain sending apparatus according to an embodiment of the present invention; A schematic structural diagram of a signaling domain transmission system provided by an embodiment. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, instead of All embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a method for receiving a signaling domain according to an embodiment of the present invention. As shown in FIG. 1 , the method includes the following steps:

101. Receive a first portion of the signaling domain in a first modulation manner.

Optionally, the step 101 may be: receiving, by using the first modulation mode, the received first part, the information carried by the first part; the first modulation mode may be a second-order modulation mode, or a fourth-order or more than fourth-order modulation. the way. In addition, the first part of the foregoing signaling field may refer to the first field of the signaling domain, and the first field may refer to the field field with the earliest transmission time in the signaling domain. In addition, the above signaling domain may be a signaling domain of a data unit preamble. Further, the above data unit may be a PLCP Protocol Data Unit (PPDU).

102. After receiving the first part, determine a modulation mode adopted by the second part of the signaling domain.

Optionally, the second part of the foregoing signaling domain may be one or more field fields after the first part of the sending time in the signaling domain.

103. When the second part adopts the second modulation mode, the information obtained by demodulating the second part by using the second modulation mode is used as information carried by the second part; wherein, the second modulation mode It is a fourth-order or more than four-order modulation.

Optionally, the information obtained by the demodulation is used as the information carried in the second part, and the information carried in the second part is received. And the information obtained by demodulating the second part by using the second modulation mode may be: performing information demodulation of the second modulation mode on the second part, and then The demodulated information is used as information carried by the second part. In addition, in the process of determining the second branch in step 102, the second portion may be demodulated in the second modulation manner, so that step 103 may directly pass the second portion through the second portion. The information obtained by demodulation of the modulation mode is used as information carried by the second part. Quadrature Phase Shift Keying (QPSK) modulation, 8 Phase Shift Keying (8PSK) modulation, 16 Phase Shift Keying (16PSK) modulation, positive Quadrature Amplitude Modulation (QAM), etc. Among them, QAM can include 16QAM and 64QAM. Since the above field field adopts fourth-order or fourth-order modulation, the field field can carry more information for each symbol in the above field field than the prior art two-order modulation.

Optionally, in this embodiment, the type of the data unit in the signaling domain is determined according to the demodulation manner of the second part, for example: when the second part adopts the second modulation mode, determining that the signaling domain is located. The type of the data unit is the first type, wherein the first type may be a type of a data unit in a communication standard defined by the HEW organization than IEEE802.11n and IEEE802.11ac.

Optionally, the method may be applied to any device with demodulation function, for example: a base station, an access point (AP), a station (station, STA), a server, a tablet, a mobile phone, and an electronic reading. Demodulation function for devices, remote controls, personal computers (PCs), laptops, in-vehicle devices, Internet TVs, wearable devices, etc.

In the above technical solution, the first part of the signaling domain is received in a first modulation manner; after receiving the first part, determining a modulation mode adopted by the second part of the signaling domain; In the second modulation mode, the information obtained by demodulating the second portion by the second modulation mode is used as information carried by the second portion; wherein the second modulation mode is fourth-order or more than fourth-order modulation. Since the second part adopts high-order modulation, the BP070 modulation is used in the prior art, and the signaling domain of the data unit preamble can carry more information. Referring to FIG. 2, FIG. 2 is a schematic flowchart of another signaling domain receiving method according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:

201. Receive a first portion of the signaling domain in a first modulation manner.

Optionally, the foregoing part may be an existing signaling (Legacy Signal, L-SIG) domain. The second part of the signaling domain in this embodiment may be a signaling SIG domain located in the signaling domain after the L-SIG domain. For example: The second part of the signaling domain may be a signaling SIG domain whose time in the signaling domain is located after the L-SIG domain, such as: SIG-A domain.

202. After receiving the first part, determining a modulation mode used by the second part of the signaling domain, if the second part is using the second modulation mode, performing step 203; In order to adopt the third modulation mode, 204 is performed.

The third modulation mode may include: The modulation mode adopted by the second part of the signaling domain in the IEEE 802.11n standard; or the modulation mode adopted by the second part of the signaling domain in the IEEE 802.11ac standard.

Optionally, the second part of the signaling domain in the IEEE 802.1 In standard may be modulated in a high-throughput-mixed (HT-Mixed) type of data unit in the EEE802.11n standard. The modulation method used in the second part of the signaling domain. The modulation method adopted in the second part of the signaling domain in the above IEEE802.11ac standard may be the second of the signaling domain in the data unit of the Very High Throughput (VHT) type in the IEEE802.11ac standard. Partially used modulation.

Optionally, the second part is specifically configured to carry information of at least one of the following:

Information about the number of antennas used to transmit the payload of the data unit, Cyclic Redundancy Check (CRC) information, identification information of the transmitting station in the single-user transmission mode, identification information of the network to which it belongs, The information used to indicate the number of streams used by each user in the multi-user transmission mode and the characteristic parameters of the data unit in which the signaling domain is located.

The second part may be a field field, or multiple field fields that are time-contiguous in the signaling domain, or multiple field fields that have time slots between the signaling domains, or are signaling. Multiple field fields of other field domains exist between domains. This embodiment does not limit this.

Optionally, the foregoing CRC information may specifically be a CRC value used for performing CRC check.

Optionally, the characteristic parameter of the data unit may be a parameter related to a transmission mode of the data unit, for example, when the data unit is transmitted by using an Orthogonal Frequency Division Multiple Access (OFDMA) technology, the foregoing feature The parameter may be an OFDMA parameter, where the OFDMA parameter may include: a sequence number of a sub-channel used by the PPDU and/or a number of sub-channels used by the PPDU. For example, the OFDMA parameter includes a sub-channel number 1, a sub-channel number 2, and a number including 2 sub-channels. In addition, the OFDMA parameter may further include the number of subcarriers used per subchannel, for example: the OFDMA parameter includes a subchannel of sequence number 1 using a number of subcarriers of 64, and a subtitle of 2 The number of subcarriers used by the sub-channel is 128 or the like. Of course, the above PPDU can also use MIMO technology, that is, the above field field can also include a MIMO reference. The features of the PPDU are not limited in this embodiment.

Optionally, in this embodiment, the OFDM characters included in the second part are not limited, for example. For example, the second part may be one or two OFDM characters, or may be two or more OFDM characters.

Optionally, the step 202 is further performed: performing parity check on the first part after receiving the first part, and determining a modulation mode adopted by the second part of the signaling domain when the check is passed.

Optionally, determining, in step 202, the modulation mode adopted by the second part of the signaling domain may include:

Determining a modulation scheme employed by the second portion of the signaling domain based on the OFDM symbols in the second portion of the signaling domain.

Optionally, since the characteristics of the OFDM characters modulated by different modulation modes are different, the modulation mode adopted by the second part of the signaling domain may be determined according to the OFDM symbols in the second part. For example: the position of the fourth-order modulated OFDM character mapped onto the constellation diagram is not 0 on the horizontal coordinate axis, and the coordinate value on the vertical coordinate axis is not 0; and the second-order modulated OFDM character is mapped to the constellation diagram The position on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is 0; or the coordinate value of the second-order modulated OFDM character mapped to the position on the constellation diagram on the horizontal coordinate axis 0, and the coordinate value in the vertical coordinate axis is not 0. For example, the foregoing determining, by using the OFDM symbol in the second part of the signaling domain, the modulation mode adopted by the second part of the signaling domain may include:

Determining that a first OFDM symbol in the second part of the signaling domain is mapped to a location on the constellation, and determining a second of the signaling domain according to a position of the first OFDM symbol mapped onto the constellation a partially adopted modulation method; wherein, when the position of the first OFDM symbol mapped onto the constellation diagram is not 0 on the horizontal coordinate axis, and the coordinate value of the vertical coordinate axis is not 0, The second part of the signaling domain adopts the second modulation mode; when the first OFDM symbol is mapped to a position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0 or the coordinate value of the vertical coordinate axis is 0. And determining that the second part of the signaling domain adopts a third modulation mode.

Optionally, since the foregoing third modulation mode may include multiple different modulation modes, the step 202 may further: when the first OFDM symbol is mapped to the position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0, and When the coordinate value of the vertical coordinate axis is not 0, it is determined that the second part of the signaling domain adopts a modulation mode adopted by the second part of the signaling domain in the IEEE802.11n standard; The coordinate value of an OFDM symbol mapped to the position on the constellation diagram in the horizontal coordinate axis If the coordinate value of the vertical coordinate axis is 0, the second part of the signaling domain is determined to be in the third modulation mode, and may include:

Determining that the second OFDM symbol in the second part of the signaling domain is mapped to a position on the constellation; when the second OFDM symbol is mapped to a position on the constellation, the coordinate value on the horizontal axis is 0. And when the coordinate value of the vertical coordinate axis is not 0, it is judged that the second part of the signaling domain adopts a modulation mode adopted by the second part of the signaling domain in the IEEE802.11ac standard.

For example, when the first OFDM symbol is modulated by QPSK, the mapping of the first OFDM symbol to the constellation may be as shown in FIG. 3-1, that is, the position of the first OFDM symbol mapped onto the constellation is The coordinate value on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is not 0, so that it can be judged that the second portion of the signaling domain is determined to adopt the second modulation mode. When the first OFDM symbol is BPSK modulated, the mapping of the first OFDM symbol to the constellation may be as shown in FIG. 3-2, that is, the position of the first OFDM symbol mapped onto the constellation is in horizontal coordinates. The coordinate value on the axis is not 0, but the coordinate value in the vertical coordinate axis is 0, so that it can be judged that the second part of the signaling domain is adopted by the second part of the signaling domain in the IEEE802.11ac standard. Modulation.

In this embodiment, the modulation mode of the second part may be determined, so that the type of the data unit in which the signaling domain is located may be determined. For example, when the second part adopts the second modulation mode, the data unit is determined to be a first type, wherein the first type may be a type of a data unit in a communication standard defined by an HEW organization than IEEE802.11n and IEEE802.11 ac; when the second part adopts a letter in the IEEE802.11n standard When the second part of the domain is used in the modulation mode, it is judged that the above data unit is a high throughput-mixed (HT-Mixed) type data unit used in the IEEE802.11n standard; when the second part adopts IEEE802 When the second part of the signaling domain in the .11ac standard adopts a modulation mode, it is determined that the data unit is a data unit of the Very High Throughput (VHT) type used in the IEEE802.11ac standard. After judging the type of the above data unit, the data unit can be processed according to the corresponding communication standard, thereby realizing that the device can process data units of different communication standards to improve device compatibility.

Optionally, the determining, by the foregoing, the mapping of the first OFDM symbol in the second part of the signaling domain to the location on the constellation, may include: Performing analog-to-digital conversion on the first OFDM symbol in the second part of the signaling domain to obtain a signal on a horizontal coordinate axis of the first OFDM symbol and a signal on a vertical coordinate axis;

Determining, according to the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis, the position of the first OFDM symbol in the field domain mapped onto the constellation map; wherein, when the decision value and the vertical coordinate of the horizontal coordinate axis When the decision value of the axis satisfies the judgment condition, it is determined that the coordinate value of the position where the first OFDM symbol is mapped onto the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value of the vertical coordinate axis is not 0; When the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis do not satisfy the judgment condition, it is determined that the position of the first OFDM symbol mapped onto the constellation diagram has a coordinate value of 0 on the horizontal coordinate axis or on the vertical coordinate axis. The coordinate value is 0; wherein the judgment condition includes any one of the following:

Optionally, the embodiment may be applied to the signaling domain of the second part adopting QPSK modulation. Optionally, the foregoing steps may be implemented by using a receiving schematic diagram as shown in FIG. 4 . For example: Step 202 receives a carrier signal carrying the second portion. In step 202, the carrier signal passes through the analog-to-digital conversion module 41 to obtain an X-axis signal and a Y-axis signal; the X-axis signal is multiplied by a carrier horizontal component generated by the crystal oscillator (or the present oscillator) 420 by the multiplier 421 to obtain an X-axis. The baseband signal of the signal; the Y-axis signal is multiplied by the vertical component of the carrier generated by the crystal oscillator (or the oscillator) 420, respectively, to obtain the baseband signal of the Y-axis signal; the baseband signal of the X-axis signal passes through the filter 431 and The sampling module 441 processes to obtain a sampling signal of the X-axis signal, and the 3-valued determiner 451 decides the sampling signal of the X-axis signal to obtain an X-axis decision value I(n), where I(n) is "-1", "0" Or "+Γ; the baseband signal of the Y-axis signal is processed by the filter 432 and the sampling module 442 to obtain a sampling signal of the paraxial signal, and the 3-valued determiner 452 determines the sampling signal of the paraxial signal to obtain a paraxial decision. The value Q (n), where Q (n) is "-1", "0" or "+Γ; and the combined signal r (n) is obtained by the parallel-to-serial conversion module 46, wherein the parallel-to-serial conversion refers to parallel connection I (n) and Q (n) are converted to r (n) in series. Thus, when both the decision value of the X-axis and the decision value of the Y-axis are "+1", the decision value of the X-axis and the decision value of the x-axis are both "-", the judgment value of the X-axis, and the paraxial axis When the decision values are respectively "+Γ and "-Γ, or the decision value of the X-axis and the decision value of the x-axis are "-Γ and "+Γ, respectively, it is judged that the first OFDM symbol is mapped to The position on the constellation diagram is not 0 on the horizontal coordinate axis, and the coordinate value on the vertical coordinate axis is not 0, otherwise it is judged that the position of the first OFDM symbol mapped onto the constellation diagram is on the horizontal coordinate axis. The coordinate value is 0 or the coordinate value on the vertical axis is 0.

Optionally, when the foregoing determining that the position of the first OFDM character mapped onto the constellation map is 0 on a horizontal coordinate axis, and the coordinate value of the vertical coordinate axis is not 0, determining the signaling The second part of the domain uses the modulation used by the second part of the signaling domain described in the IEEE 802.11n standard. For example: the above horizontal axis has a decision value of "0", and the decision value of the vertical coordinate axis is "+Γ or "-1". The above only describes the position where the first OFDM character is mapped onto the constellation diagram, of course. Step 202 can determine, by using the receiving schematic diagram shown in FIG. 4, that the second OFDM character is mapped to a position on the constellation diagram, to determine that the second part is adopted by using the second part of the signaling domain in the IEEE802.11ac standard. Modulation.

Optionally, the foregoing may also be determined by using the receiving schematic diagram shown in FIG. 4, and specifically, the modulation mode adopted by the second part may be determined according to I (n), Q (n), and r (n) values, for example: The modulation method used in the second part of the relationship shown in 1.

Table 1

From Table 1, it can be concluded that when I ( n), Q ( II ) and r ( II) are divided into another ' J is "+Γ, "+1", "11", "+1", "-1", "10", "-1", "+1", "01", "-1", "00", the second part above adopts the above second modulation method; when I (n), 0 (11) and 1~ (11) When "0", "+Γ, "1", "0", "-1", "0", respectively, the second part adopts the signaling domain described in the IEEE802.11n standard. The second part adopts the modulation method; when I ( _n ), Q (n), and r(n) are "+Γ, "0", "1", "-Γ, "0", "0", respectively The second part adopts a modulation method adopted by the second part of the signaling domain in the IEEE802.11ac standard; wherein, the modulation mode adopted by the second part of the signaling domain in the IEEE802.11ac standard is required For the case where only one character is listed in the table, for details, refer to the above description. Of course, the second OFDM character can also refer to the method for judging the first OFDM character, which is not repeated here.

Optionally, the foregoing demodulating the OFDM symbol in the second part may be, in the second part Part of OFDM or all OFDM is demodulated. In addition, the demodulation may be demodulated by the second modulation method described above, or may be demodulated by the third modulation method described above. Of course, the third modulation mode and the second modulation mode may be respectively used for demodulation, and then the modulation mode adopted by the second part of the signaling domain is determined according to different demodulation contents.

Optionally, the OFDM symbol in the second part of the signaling domain is demodulated, and the modulation mode used in the second part of the signaling domain is determined according to the demodulated content, which may include: Demodulating the second modulation mode demodulates the OFDM symbol in the second part of the signaling domain to obtain a first demodulated content;

Optionally, the foregoing CRC information may be CRC information carried in the signaling domain, or CRC information carried in other field fields of the preamble where the signaling domain is located. The CRC information may also be CRC information calculated by the modulating device for the information carried by the second part by using a certain check rule, and then step 202 is performed on the CRC information obtained by calculating the first demodulated content by the check rule. When the CRC information is consistent, indicating that the demodulation mode is correct, the check is passed. The above verification rule may be a verification rule that is negotiated in advance with the modulation device.

Optionally, the OFDM symbol in the second part of the signaling domain is demodulated, and the modulation mode used in the second part of the signaling domain is determined according to the demodulated content, and further includes:

The second demodulated content is CRC by the obtained CRC information. When the check passes, the second part of the signaling domain adopts the third modulation mode.

Demodulating the OFDM symbol in the second part of the signaling domain by demodulation of the third modulation mode to obtain the second demodulation content may be the signaling in the IEEE 802.11n and IEEE 802.11ac standards respectively The second part of the domain adopts a modulation mode to demodulate the second part of the OFDM symbol to obtain a plurality of different second demodulation contents, and then perform a CRC by using a plurality of different different second demodulation contents. When a second demodulated content of the plurality of different second demodulation contents passes, determining that the second part of the signaling domain is adopted in a communication standard corresponding to the passed first demodulated content Demodulation mode adopted by the second part of the signaling domain; when no second demodulation content of the plurality of different second demodulation contents passes, determining that the second part of the signaling domain adopts a fourth Modulation. The fourth modulation method is a modulation method for data in the IEEE802.11a and IEEE802.11g standards. In addition, the step of demodulating the OFDM symbol in the second part of the signaling domain by using the demodulation of the third modulation mode to obtain the second demodulated content may further be: performing CRC calibration on the first demodulated content. Performing at the same time as or before executing, or performing demodulation of the OFDM symbol in the second portion of the signaling domain by using demodulation of the second modulation mode to obtain the first demodulated content This embodiment does not limit this.

203. When the second part adopts the second modulation mode, use information obtained by demodulating the second part by using the second modulation mode as information carried by the second part; where, the second modulation mode It is a fourth-order or more than four-order modulation.

204. When the second part adopts the third modulation mode, the information obtained by demodulating the third part by using the third modulation mode is used as the information carried by the second part.

Optionally, the method may be specifically applied to any device with demodulation functions, such as: a base station, an AP, a STA, a server, a tablet, a mobile phone, an e-reader, a remote controller, a PC, a notebook computer, an in-vehicle device, A demodulation function such as an Internet TV or a wearable device.

In the above technical solution, based on the first embodiment, when the second portion adopts the third modulation mode, the information obtained by demodulating the third portion through the third modulation mode is added as the first The information carried in the second part. In this way, while implementing the signaling domain of the data unit preamble to carry more information, it is also possible to implement a data unit in which the device can handle different communication standards, so as to improve the compatibility of the device. Referring to FIG. 5, FIG. 5 is a schematic flowchart of a signaling domain sending method according to an embodiment of the present invention. As shown in FIG. 5, the method includes:

501. The signaling domain is generated, where the first part of the signaling domain adopts a first modulation mode, the second part of the signaling domain adopts a second modulation mode, and the second modulation mode is fourth-order or more than fourth-order. modulation.

Optionally, the foregoing first modulation mode may be a second-order modulation mode, or a fourth-order or more-order fourth-order modulation mode. In addition, the first part of the foregoing signaling domain may refer to the first field of the signaling domain, The first field field may refer to the field field that is sent at the earliest time in the signaling domain. In addition, the above signaling domain may be a signaling domain of a data unit preamble. In addition, the above data unit may be a PPDU.

Optionally, the first part may be an L-SIG domain. The second part of the signaling domain in this embodiment may be a signaling SIG domain located in the signaling domain after the L-SIG domain. For example: The second part of the signaling domain may be a signaling SIG domain whose time is located after the L-SIG domain in the signaling domain, such as: SIG-A domain.

Information about the number of antennas used to transmit the payload of the data unit, CRC information, identification information of the transmitting station in the single-user transmission mode, identification information of the network to which it belongs, and multi-user transmission mode for indicating each user's use The information of the number of code streams and the characteristic parameters of the data unit in which the signaling domain is located.

Optionally, the characteristic parameter of the data unit may be a parameter related to the data unit transmission mode. For example, when the data unit is transmitted by using the OFDMA technology, the feature parameter may be an OFDMA parameter, where the OFDMA parameter may include: The sequence number of the sub-channel used by the PPDU and/or the number of sub-channels used by the PPDU. For example, the OFDMA parameter includes a sub-channel number 1, a sub-channel number 2, and a number including 2 sub-channels. In addition, the OFDMA parameter may further include the number of subcarriers used by each subchannel, for example: the OFDMA parameter includes a subchannel of sequence number 1 using a number of subcarriers of 64, and a subtitle of 2 The number of subcarriers used by the sub-channel is 128 or the like. Of course, the above PPDU can also use MIMO technology, that is, the above field field can also include a MIMO reference. The features of the PPDU are not limited in this embodiment.

Optionally, in this embodiment, the OFDM character included in the second part is not limited. For example, the second part may be one or two OFDM characters, or may be two or more. OFDM characters.

QPSK modulation, 8PSK modulation, 16PSK modulation, QAM, etc., wherein QAM may include 16QAM and 64QAM. Since the above field field adopts fourth-order or fourth-order modulation, the field field can carry more information than the prior art two-order modulation.

502. Send the first part and the second part to the demodulation device respectively.

Optionally, the method may be specifically applied to any device with a modulation function, such as: a base station, an AP, a STA, a server, a tablet, a mobile phone, an e-reader, a remote controller, a PC, a laptop, an in-vehicle device, and a network. Demodulation function for TVs, wearable devices, etc.

In the foregoing technical solution, a signaling domain is generated, where a first part of the signaling domain adopts a first modulation mode, a second part of the signaling domain adopts a second modulation mode, and a second modulation mode is a fourth-order or more Fourth-order modulation; transmitting the first portion and the second portion to the demodulation device, respectively. Compared with the prior art, BPSK modulation is used, and the signaling domain of the data unit preamble of this embodiment can carry more information. Referring to FIG. 6, FIG. 6 is a schematic diagram of a signaling domain transmission method according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps:

601. The modulating device generates a signaling domain, where the first part of the signaling domain adopts a first modulation mode, the second part of the signaling domain adopts a second modulation mode, and the second modulation mode is fourth-order or more than four. Modulation of order

602. The modulating device separately sends the first part and the second part to the demodulating device to the demodulating device. 603. The demodulating device receives the first part of the signaling domain in a first modulation manner.

604. After receiving the first part, the demodulation device determines a modulation mode used by the second part of the signaling domain.

605. When the second part adopts the second modulation mode, the demodulation device uses the information obtained by demodulating the second part by using the second modulation mode as the information carried by the second part; The second modulation method is fourth-order or more than fourth-order modulation.

In the above technical solution, since the signaling domain adopts fourth-order or more-order fourth-order modulation, the signaling domain of the data unit preamble can carry more information. The following is a device embodiment of the present invention. The device embodiment of the present invention is used to perform the method for implementing the first to fourth embodiments of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown, and the specific technical details are not disclosed. Please refer to the first embodiment, the second embodiment, the third embodiment and the fourth embodiment of the present invention. Referring to FIG. 7, FIG. 7 is a schematic structural diagram of a signaling domain receiving apparatus according to an embodiment of the present invention, including: a receiving unit 71, a determining unit 72, and a first acquiring unit 73, where:

The receiving unit 71 is configured to receive the first part of the signaling domain in a first modulation manner.

Optionally, the receiving unit 71 may be information that is received by the first part of the received first part by demodulation of the first modulation mode; the first modulation mode may be a second-order modulation mode, or a fourth-order or more than four-order Modulation. In addition, the first part of the foregoing signaling field may refer to the first field of the signaling domain, and the first field may refer to the field field with the earliest transmission time in the signaling domain. In addition, the above signaling domain may be a signaling domain of a data unit preamble. In addition, the above data unit may be a PPDU.

The determining unit 72 is configured to determine, when the receiving unit 71 receives the first part, a modulation mode adopted by the second part of the signaling domain.

The first obtaining unit 73 is configured to, when the determining unit 72 determines that the second part adopts the second modulation mode, use the information obtained by demodulating the second part by using the second modulation mode as the first The information carried by the two parts; wherein the second modulation mode is fourth-order or more than four-order modulation.

Optionally, the information obtained by the demodulation is used as the information carried in the second part, and the information carried in the second part is received. And the information obtained by demodulating the second part by using the second modulation mode may be: performing information demodulation of the second modulation mode on the second part, and then The demodulated information is used as information carried by the second part. In addition, in the process of determining the second portion by the determining unit 72, the second portion may be demodulated in the second modulation manner, so that the first acquiring unit 73 may directly pass the second portion. The information obtained by demodulation of the second modulation mode is used as information carried by the second part. QPSK modulation, 8PSK modulation, 16PSK modulation, QAM, etc., wherein the QAM may include 16QAM and 64QAM. Since the above field field adopts fourth-order or fourth-order modulation, the field field can carry more information for each symbol in the field field than the prior art two-order modulation.

Optionally, the device may be specifically applied to any device with demodulation functions, such as: a base station, an AP, a STA, a server, a tablet, a mobile phone, an e-reader, a remote controller, a PC, a notebook computer, an in-vehicle device, A demodulation function such as an Internet TV or a wearable device.

In the above technical solution, the first part of the signaling domain is received in a first modulation manner; after receiving the first part, determining a modulation mode adopted by the second part of the signaling domain; In the second modulation mode, the information obtained by demodulating the second portion by the second modulation mode is used as information carried by the second portion; wherein the second modulation mode is fourth-order or more than fourth-order modulation. Since the second part adopts high-order modulation, the signaling domain of the data unit preamble of the embodiment of the present invention can carry more information than the BPSK modulation of the prior art. Referring to FIG. 8, FIG. 8 is a schematic structural diagram of a signaling domain receiving apparatus according to an embodiment of the present invention, including: a receiving unit 81, a determining unit 82, a first obtaining unit 83, and a second acquiring unit 84, where:

The receiving unit 81 receives the first part of the signaling domain in a first modulation manner.

The determining unit 82 is configured to determine, after the receiving unit 81 receives the first part, a modulation mode adopted by the second part of the signaling domain.

Optionally, the determining unit 82 determines that the second part of the signaling domain can be obtained by using the second The modulation mode, or the third part is a third modulation mode, where the third modulation mode may include:

Optionally, in this embodiment, the OFDM characters included in the second part are not limited. For example, the second part may be one or two OFDM characters, or may be two or more OFDM characters.

Optionally, the determining unit 82 may be configured to determine, after the receiving unit 81 receives the first part, the signaling domain according to the OFDM symbol in the second part of the signaling domain. The second part uses the modulation method. Optionally, since the characteristics of the OFDM characters modulated by different modulation modes are different, the modulation mode adopted by the second part of the signaling domain may be determined according to the OFDM symbols in the second part. For example: the position of the fourth-order modulated OFDM character mapped onto the constellation diagram is not 0 on the horizontal coordinate axis, and the coordinate value on the vertical coordinate axis is not 0; and the second-order modulated OFDM character is mapped to the constellation diagram The position on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is 0; or the coordinate value of the second-order modulated OFDM character mapped to the position on the constellation diagram on the horizontal coordinate axis 0, and the coordinate value in the vertical coordinate axis is not 0. For example, the determining unit 82 may be configured to: after the receiving unit 81 receives the first part, determine that the first OFDM symbol in the second part of the signaling domain is mapped to a location on the constellation, and Decoding a position of the first OFDM symbol mapped onto the constellation diagram to determine a modulation mode employed by the second portion of the signaling domain; wherein, when the first OFDM symbol is mapped to a position on the constellation diagram on a horizontal coordinate axis The coordinate value is not 0, and when the coordinate value of the vertical coordinate axis is not 0, it is determined that the second part of the signaling domain adopts the second modulation mode; when the first OFDM symbol is mapped to the constellation diagram When the position of the upper coordinate axis is 0 or the coordinate value of the vertical coordinate axis is 0, it is judged that the second part of the signaling domain adopts the third modulation mode.

Optionally, since the foregoing third modulation mode may include multiple different modulation modes, the determining unit 82 may be further configured to: when the first OFDM symbol is mapped to a position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0, and when the coordinate value of the vertical coordinate axis is not 0, it is determined that the second part of the signaling domain adopts a modulation mode adopted by the second part of the signaling domain in the IEEE802.11n standard; the determining unit 82 may also Determining, when the coordinate value of the horizontal coordinate axis is not 0, when the position of the first OFDM symbol is mapped onto the constellation diagram, and determining the second of the signaling domain when the coordinate value of the vertical coordinate axis is 0 a second OFDM symbol in the portion is mapped to a position on the constellation; when the second OFDM symbol is mapped to a position on the constellation diagram, the coordinate value on the horizontal coordinate axis is 0, and the coordinate value in the vertical coordinate axis is not When it is 0, it is judged that the second part of the signaling domain adopts a modulation mode adopted by the second part of the signaling domain in the IEEE802.11ac standard.

For example, when the first OFDM symbol is modulated by QPSK, the mapping of the first OFDM symbol to the constellation may be as shown in FIG. 3-1, that is, the position of the first OFDM symbol mapped onto the constellation is The coordinate value on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is not 0, so that it can be judged that the second portion of the signaling domain is determined to adopt the second modulation mode. When the first mentioned above When the OFDM symbols are BPSK modulated, the mapping of the first OFDM symbol to the constellation diagram may be as shown in FIG. 3-2, that is, the coordinates of the first OFDM symbol mapped to the position on the constellation diagram on the horizontal coordinate axis. The value is not 0, but the coordinate value of the vertical coordinate axis is 0, so that it can be judged that the second part of the signaling domain adopts the modulation mode adopted by the second part of the signaling domain in the IEEE802.11ac standard.

In this embodiment, the modulation mode of the second part may be determined, so that the type of the data unit in which the signaling domain is located may be determined. For example, when the second part adopts the second modulation mode, the data unit is determined to be a first type, wherein the first type may be a type of a data unit in a communication standard defined by an HEW organization than IEEE802.11n and IEEE802.11 ac; when the second part adopts a letter in the IEEE802.11n standard When the modulation mode adopted by the second part of the domain is used, it is judged that the data unit is an HT-Mixed type data unit used in the IEEE802.11n standard; and the second part adopts a signaling field using the IEEE802.11ac standard. When the modulation method employed in the two parts is used, it is judged that the above data unit is a VHT type data unit used in the IEEE802.11ac standard. After judging the type of the above data unit, the data unit can be processed according to the corresponding communication standard, thereby realizing that the device can process data units of different communication standards to improve device compatibility.

Optionally, as shown in FIG. 9, the determining unit 82 may further include:

An analog-to-digital conversion unit 821, configured to perform analog-to-digital conversion on a first OFDM symbol in a second part of the signaling domain after the receiving unit receives the first part, to obtain the first OFDM The signal on the horizontal axis of the symbol and the signal on the vertical axis;

a first determining unit ₈₂₂ , configured to acquire a baseband signal of the signal on the horizontal coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain a sampling signal of a signal on a horizontal coordinate axis, and pass a 3-valued determiner pair The sampling signal is judged to obtain a decision value of the horizontal coordinate axis;

a second determining unit 823, configured to acquire a baseband signal of the signal on the vertical coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain a sampling signal of a signal on a vertical coordinate axis, and pass a 3-valued determiner pair The sampling signal is judged to obtain a decision value of a vertical coordinate axis;

a first determining sub-unit 824, configured to determine, according to the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis, the position of the first OFDM symbol mapped onto the constellation map; wherein, when the horizontal coordinate axis When the decision value and the decision value of the vertical coordinate axis satisfy the judgment condition, it is determined that the coordinate value of the position where the first OFDM symbol is mapped onto the constellation diagram on the horizontal coordinate axis is not 0, and The coordinate value of the vertical coordinate axis is not 0; when the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis do not satisfy the judgment condition, it is determined that the position of the first OFDM symbol mapped onto the constellation diagram is at the horizontal coordinate The coordinate value of the axis is 0 or the coordinate value of the vertical coordinate axis is 0; wherein the judgment condition includes any one of the following:

a second determining sub-unit 825, configured to determine, according to a position where the first OFDM symbol is mapped onto a constellation map, a modulation mode adopted by a second part of the signaling domain; where, when the first OFDM symbol is mapped The coordinate value on the horizontal coordinate axis of the position on the constellation diagram is not 0, and when the coordinate value of the vertical coordinate axis is not 0, it is determined that the second part of the signaling domain adopts the second modulation mode; The first OFDM symbol is mapped to a position on the constellation diagram. When the coordinate value of the horizontal coordinate axis is 0 or the coordinate value of the vertical coordinate axis is 0, the second part of the signaling domain is determined to adopt the third modulation mode. .

Optionally, the embodiment may be applied to the signaling domain of the second part adopting QPSK modulation. Optionally, the determining unit 82 is implemented by using a receiving schematic diagram as shown in FIG. 4 . For example: the determining unit 82 receives the carrier signal carrying the second part. In the judging unit 92, the carrier signal passes through the analog-to-digital conversion module 41 to obtain an X-axis signal and a Y-axis signal; the X-axis signal is multiplied by the carrier horizontal component generated by the crystal oscillator (or the present oscillator) 420 by the multiplier 421 to obtain X. The baseband signal of the axis signal; the Y-axis signal is respectively multiplied by the vertical component of the carrier generated by the crystal oscillator (or the oscillator) 420 by the multiplier 422 to obtain the baseband signal of the Y-axis signal; the baseband signal of the X-axis signal passes through the filter 431. And the sampling module 441 processes to obtain a sampling signal of the X-axis signal, and the 3-valued determiner 451 decides the sampling signal of the X-axis signal to obtain an X-axis decision value I(n), where I(n) is "-1", "0" or "+Γ; the baseband signal of the Y-axis signal is processed by the filter 432 and the sampling module 442 to obtain a sample signal of the Y-axis signal, and the 3-value decider 452 determines the sample signal of the Y-axis signal to obtain Y. The decision value Q ( n ) of the axis, where Q ( n ) is "-1 ", "0" or "+Γ ; and the combined signal r ( n ) is obtained by the parallel-to-serial conversion module 46, wherein the parallel-to-serial conversion means Convert parallel I ( n ) and Q ( n ) into r ( n ) in series. Thus, both the decision value of the X axis and the decision value of the Y axis are both "+Γ, the decision value of the X-axis and the decision value of the x-axis are both "-1", the judgment value of the X-axis and the judgment value of the x-axis are respectively "+Γ and"-Γ, or When the decision value of the X-axis and the decision value of the x-axis are both "-Γ and "+Γ, respectively, it is determined that the coordinate value of the position where the first OFDM symbol is mapped onto the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value in the vertical coordinate axis is not 0, otherwise it is judged that the position of the first OFDM symbol mapped onto the constellation diagram has a coordinate value of 0 on the horizontal coordinate axis or a coordinate value of 0 on the vertical coordinate axis. .

Optionally, when the determining unit 82 determines that the coordinate value of the position where the first OFDM character is mapped onto the constellation diagram on the horizontal coordinate axis is 0, and the coordinate value of the vertical coordinate axis is not 0, determining the foregoing The data unit is an HT-Mixed type data unit used in the IEEE 802.11n standard. For example, the decision value of the above horizontal coordinate axis is "0", and the decision value of the vertical coordinate axis is "+Γ or "-1". The above only describes the position where the first OFDM character is mapped onto the constellation diagram, of course. The determining unit 82 determines that the second OFDM character is mapped to the position on the constellation by using the receiving schematic shown in FIG. 4, to determine that the second part adopts the second part of the signaling domain in the IEEE802.11ac standard. Modulation method.

Optionally, the determining unit 82 may further determine, by using the receiving schematic diagram shown in FIG. 4, specifically, determining, according to the values of I (n), Q (n), and r (n), the modulation mode used in the second part, for example, : The modulation method adopted in the second part of the relationship shown in Table 1.

The judging unit 92 can obtain from Table 1 that I (n), Q (n), and r (n) are "+Γ, "+Γ, "11", "+Γ, "-Γ, "10, respectively. "," - Γ, "+Γ, "01", "-Γ, "00", the second part of the above second modulation method; when I (n), Q (η) and r (η) respectively When "0", "+Γ, "1", "0", "-Γ, "0", the second part adopts the modulation method adopted in the second part of the signaling domain described in the 802.11n standard. When I (n), Q (η), and r (η) are "+Γ, "0", "1", "-Γ, "0", "0", respectively, the second part above adopts IEEE802 The modulation method adopted in the second part of the signaling domain in the .11ac standard; wherein, in determining the modulation mode adopted by the second part of the signaling domain in the IEEE802.11ac standard, two characters are required, and in the table For a case where only one character is listed, the description may be made by referring to the above description. Of course, the second OFDM character can also refer to the method for determining the first OFDM character, which is not repeated here.

Optionally, the determining unit 82 is further configured to: after the receiving unit 81 receives the first part, demodulate the OFDM symbol in the second part of the signaling domain, according to the demodulated inner The content of the modulation used by the second part of the signaling domain is determined.

Optionally, the foregoing demodulating the OFDM symbol in the second part may be: demodulating part of OFDM or all OFDM of the second part. Alternatively, the demodulation may be performed by the second modulation method described above, or may be demodulated by the third modulation method described above. Of course, the demodulation of the third modulation mode and the second modulation mode may be separately adopted, and then the modulation mode adopted by the second part of the signaling domain is determined according to different demodulation contents.

Optionally, as shown in FIG. 10, the determining unit 82 may include:

The first demodulation unit 826 is configured to: after the receiving unit 81 receives the first part, demodulate the OFDM symbol in the second part of the signaling domain by using demodulation of the second modulation mode to obtain a first Demodulation content;

a first check unit 827, configured to perform CRC on the first demodulated content by using the obtained cyclic redundancy code check CRC information, and when the check passes, determine that the second part of the signaling domain is adopted as The second modulation method.

Optionally, the foregoing CRC information may be CRC information carried in the signaling domain, or CRC information carried in other field fields of the preamble where the signaling domain is located. The CRC information may also be CRC information calculated by the modulating device for the information carried by the second part by using a certain check rule, and then the first check unit 827 calculates the CRC obtained by using the first demodulated content of the check rule. When the information is consistent with the acquired CRC information, indicating that the demodulation mode is correct, the verification is passed. The above verification rule may be a verification rule that is negotiated in advance with the modulation device.

Optionally, the determining unit 82 may further include:

a second demodulation unit 828, configured to perform demodulation of the OFDM symbol in the second part of the signaling domain by using demodulation in a third modulation manner to obtain a second demodulated content;

The second check unit 829 performs CRC on the second demodulated content by using the acquired CRC information. When the check passes, the second part of the signaling domain adopts the third modulation mode.

The second demodulation unit 828 demodulates the OFDM symbol in the second part of the signaling domain by using demodulation in a third modulation mode to obtain a second demodulation content, which may be IEEE802.11n and IEEE802.1 lac, respectively. The second part of the signaling field in the standard uses a modulation method to demodulate the second part of the OFDM symbol to obtain a plurality of different second demodulation contents, and the second check unit 829 has a plurality of different a different second demodulation content for CRC, when the multiple different second demodulations When a second demodulated content of the content passes, determining that the second part of the signaling domain adopts a modulation mode adopted by the second part of the signaling domain in the communication standard corresponding to the passed first demodulated content And when any one of the plurality of different second demodulation contents passes, the second part of the signaling domain is determined to adopt a fourth modulation mode. The fourth modulation method is a modulation method for data in the IEEE802.11a and IEEE802.11g standards. In addition, the step of demodulating the OFDM symbol in the second part of the signaling domain by using the demodulation of the third modulation mode to obtain the second demodulated content may further be: performing CRC calibration on the first demodulated content. Performing at the same time as or before executing, or performing demodulation of the OFDM symbol in the second portion of the signaling domain by using demodulation of the second modulation mode to obtain the first demodulated content This embodiment does not limit this.

a first obtaining unit 83, configured to: when the determining unit 82 determines that the second part adopts the second modulation mode, use the information obtained by demodulating the second part by using the second modulation mode as the second part Information carried; wherein the second modulation mode is fourth-order or more than fourth-order modulation.

a second obtaining unit 84, configured to: when the determining unit 82 determines that the second portion adopts the third modulation mode, the information obtained by demodulating the third portion by using the third modulation mode is used as the The second part carries the information.

In the above technical solution, based on the first device embodiment, when the second portion adopts the third modulation mode, the information obtained by demodulating the third portion through the third modulation mode is added as the The second part carries the information. In this way, while implementing the signalling domain of the data unit preamble to carry more information, the device can also process data units of different communication standards to improve device compatibility. Referring to FIG. 11, FIG. 11 is a schematic structural diagram of a signaling domain sending apparatus according to an embodiment of the present invention. As shown in FIG. 11, the method includes: a generating unit 111 and a sending unit 112, where:

The generating unit 111 is configured to generate a signaling domain, where the first part of the signaling domain adopts a first modulation mode, the second part of the signaling domain adopts a second modulation mode, and the second modulation mode is a fourth-order or More than four orders of modulation.

Optionally, the foregoing first modulation mode may be a second-order modulation mode, or a fourth-order or more-order fourth-order modulation mode. In addition, the first part of the signaling field may refer to the first field of the signaling domain, and the first field may refer to the field field with the earliest transmission time in the signaling domain. In addition, the above letter The grant domain can be the signaling domain of the data unit preamble. In addition, the above data unit may be a PPDU.

Optionally, the OFDM characters included in the second part are not limited in this embodiment. For example, the second part may be one or two OFDM characters, or may be two or more OFDM characters. QPSK modulation, 8PSK modulation, 16PSK modulation, QAM, etc., wherein the QAM may include 16QAM and 64QAM. Since the above field field adopts fourth-order or fourth-order modulation, the field field can carry more information than the prior art two-order modulation.

The sending unit 112 is configured to separately send the first part and the second part to the demodulation device.

Optionally, the device may be specifically applied to any device with a modulation function, such as: a base station, an AP, a STA, a server, a tablet, a mobile phone, an e-reader, a remote controller, a PC, a laptop, an in-vehicle device, and a network. Demodulation function for TVs, wearable devices, etc.

In the foregoing technical solution, a signaling domain is generated, where a first part of the signaling domain adopts a first modulation mode, a second part of the signaling domain adopts a second modulation mode, and a second modulation mode is a fourth-order or more The fourth-order modulation; the first part and the second part are respectively sent to the demodulation device, and the signaling domain of the data unit preamble of this embodiment can carry more information than the BPSK modulation in the prior art. Referring to FIG. 12, FIG. 12 is a schematic structural diagram of another signaling domain receiving apparatus according to an embodiment of the present invention. As shown in FIG. 12, the method includes: a receiver 121 and a memory 122, and a receiver 121 and The processor 122 is connected to the processor 123, and the memory 122 is used to store the program code. The processor 123 is configured to invoke the program code stored in the memory 122 to perform the following operations: receiving, by the receiver 121, the first modulation mode. The first part of the signaling domain;

In another embodiment, the processor 123 can also be used to Receiving, by the receiver 121, the first part of the signaling domain in a first modulation manner;

After receiving the first part, determining a modulation mode adopted by the second part of the signaling domain; and when the second part adopts a second modulation mode, passing the second part by the second modulation mode The information obtained by demodulation is used as information carried by the second part; wherein, the second modulation mode is fourth-order or more than fourth-order modulation;

The third modulation mode may include:

Optionally, the operation performed by the processor 123 to determine the modulation mode used by the second part of the signaling domain may include:

Determining, according to the Orthogonal Frequency Division Multiplexing (OFDM) technique in the second part of the signaling domain, a modulation scheme employed by the second portion of the signaling domain.

Optionally, the operation performed by the processor 123 to determine, according to the OFDM symbol in the second part of the signaling domain, the modulation mode adopted by the second part of the signaling domain may include :

Optionally, the determining, by the processor 123, the operation of the second part of the signaling domain by using the third modulation mode may include:

When the first OFDM symbol is mapped to the position on the constellation diagram, the coordinate value of the horizontal coordinate axis is 0, and the coordinate value of the vertical coordinate axis is not 0, the second part of the signaling domain is determined to adopt IEEE802. The modulation method adopted by the second part of the signaling domain in the .11n standard; Optionally, the determining, by the processor 123, that the second part of the signaling domain is in a third modulation mode, the method further includes:

Optionally, the performing, by the processor 123, determining, by the processor 123, the mapping of the first OFDM symbol in the second part of the signaling domain to the location on the constellation, may include:

Optionally, the operation performed by the processor 123 to determine the modulation mode used by the second part of the signaling domain may include: Demodulating the OFDM symbol in the second part of the signaling domain, and determining a modulation mode adopted by the second part of the signaling domain according to the demodulated content.

Optionally, the processor 123 performs demodulation of the OFDM symbol in the second part of the signaling domain, and determines, according to the demodulated content, a modulation mode adopted by the second part of the signaling domain. Operation, which can include:

Optionally, the processor 123 performs demodulation of the OFDM symbol in the second part of the signaling domain, and determines, according to the demodulated content, a modulation mode adopted by the second part of the signaling domain. The operation may further include:

Optionally, the second part of the foregoing signaling domain may be used to carry information of at least one of: information about the number of antennas used to transmit the payload of the data unit, CRC information, and transmission in a single-user transmission mode. The identification information of the station, the identification information of the network to which it belongs, the information indicating the number of streams used by each user in the multi-user transmission mode, and the characteristic parameters of the data unit in which the signaling domain is located.

Optionally, the characteristic parameters of the data unit where the signaling domain is located include:

The sequence number of the subchannel used by the data unit and/or the number of subchannels used by the data unit

3 .

Optionally, the first part of the signaling domain may be an existing device signaling L-SIG domain, and the second part of the signaling domain may be located in the signaling domain after the L-SIG domain Signaling SIG domain.

Optionally, the device may be specifically applied to any device with demodulation functions, such as: a base station, an AP, a STA, a server, a tablet, a mobile phone, an e-reader, a remote controller, a PC, a notebook computer, an in-vehicle device, A demodulation function such as an Internet TV or a wearable device. In the above technical solution, the first part of the signaling domain is received in a first modulation manner; after receiving the first part, determining a modulation mode adopted by the second part of the signaling domain; In the second modulation mode, the information obtained by demodulating the second portion by the second modulation mode is used as information carried by the second portion; wherein the second modulation mode is fourth-order or more than fourth-order modulation. Since the second part adopts high-order modulation, the signaling domain of the data unit preamble of the embodiment of the present invention can carry more information than the BPSK modulation in the prior art. Referring to FIG. 13, FIG. 13 is a schematic structural diagram of another signaling domain sending apparatus according to an embodiment of the present invention. As shown in FIG. 13, the method includes: a transmitter 131 and a memory 132, and the transmitter 131 and The processor 132 is connected to the memory 132, and the memory 132 is used to store the program code. The processor 133 is configured to invoke the program code stored in the memory 132 to perform the following operations: generating a signaling domain, where the signaling domain The first part adopts a first modulation mode, the second part of the signaling domain adopts a second modulation mode, and the second modulation mode is a fourth-order or more than four-order modulation; the transmitter 131 is configured to separately send the The first part and the second part.

Optionally, the first modulation mode may be a second-order modulation mode, or a fourth-order or more-order fourth-order modulation mode. In addition, the first part of the signaling field may refer to the first field of the signaling domain, and the first field may refer to the field field with the earliest transmission time in the signaling domain. Additionally, the above signaling domain may be the signaling domain of the data unit preamble. In addition, the above data unit may be a PPDU.

Optionally, the foregoing second part may be specifically used to carry information of at least one of: information about the number of antennas used to transmit the payload of the data unit, CRC information, and identifier of a sending station in a single-user transmission mode. Information, identification information of the network to which it belongs, information indicating the number of streams used by each user in the multi-user transmission mode, and characteristic parameters of the data unit in which the signaling domain is located. The second part may be a field field, or multiple field fields that are time-contiguous in the signaling domain, or multiple field fields that have time slots between the signaling domains, or are signaling. Multiple field fields of other field domains exist between domains. This embodiment does not limit this.

In the foregoing technical solution, a signaling domain is generated, where a first part of the signaling domain adopts a first modulation mode, a second part of the signaling domain adopts a second modulation mode, and a second modulation mode is a fourth-order or more The fourth-order modulation; the first part and the second part are respectively sent to the demodulation device, and the signaling domain of the data unit preamble of this embodiment can carry more information than the BPSK modulation in the prior art. Referring to FIG. 14, FIG. 14 is a schematic structural diagram of a signaling domain transmission system according to an embodiment of the present invention. As shown in FIG. 14, the method includes: a modulation device 141 and a demodulation device 142, where:

The modulating device 141 is configured to generate a signaling domain, where a first part of the signaling domain adopts a first modulation mode, a second part of the signaling domain adopts a second modulation mode, and a second modulation mode is a fourth-order or More than four orders of modulation; transmitting the first portion and the second portion to the demodulating device 142;

a demodulation device 142, configured to receive, in a first modulation manner, a first portion of a signaling domain sent by the modulation device 141; and after receiving the first portion, determine a modulation mode used by the second portion of the signaling domain; When the second part adopts the second modulation mode, the information obtained by demodulating the second part by the second modulation mode is used as information carried by the second part; wherein, the second modulation mode is fourth order Or more than four orders of modulation.

Alternatively, the above-mentioned modulation device 141 may specifically be a signaling domain transmitting device according to any of the embodiments shown in FIGS. 11 and 13.

Optionally, the demodulation device 142 may be a signaling domain receiving device according to any one of the embodiments shown in FIG. 7, 8, 9, 10, and 12.

In the above technical solution, since the signaling domain adopts fourth-order or more-order fourth-order modulation, the signaling domain of the data unit preamble can carry more information.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium, the program When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (Random Access Memory).

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

Rights request

1. A signaling domain receiving method, characterized by including:

receiving the first part of the signaling field in the first modulation mode;

After receiving the first part, determine the modulation mode adopted by the second part of the signaling domain; when the second part adopts the second modulation mode, pass the second part through the second modulation mode The information obtained by demodulation is used as the information carried by the second part; wherein, the second modulation method is a fourth-order or more than fourth-order modulation.

2. The method of claim 1, wherein the determining the modulation mode used in the second part of the signaling domain includes:

Determine the modulation method used in the second part of the signaling domain based on the orthogonal frequency division multiplexing technology OFDM symbols in the second part of the signaling domain; or

The OFDM symbols in the second part of the signaling domain are demodulated, and the modulation mode used in the second part of the signaling domain is determined based on the demodulated content.

3. The method of claim 2, wherein determining the modulation mode used in the second part of the signaling domain based on the OFDM symbols in the second part of the signaling domain includes: determining The first OFDM symbol in the second part of the signaling domain is mapped to a position on the constellation diagram, and the second part of the signaling domain is determined based on the position where the first OFDM symbol is mapped to the constellation diagram. The modulation method adopted; wherein, when the coordinate value of the position on the horizontal coordinate axis of the first OFDM symbol mapped to the constellation diagram is not 0, and the coordinate value of the vertical coordinate axis is not 0, it is determined that the The second part of the signaling domain adopts the second modulation mode; When the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is 0 or the coordinate value on the vertical coordinate axis is 0 , it is determined that the second part of the signaling domain adopts a third modulation method, wherein the third modulation method includes:

The modulation method used in the second part of the signaling domain described in the IEEE802.11n standard; or

The modulation method used in the second part of the signaling domain described in the IEEE802.11ac standard.

4. The method according to claim 3, characterized in that: determining the second value of the signaling domain Some adopt the third modulation method, including:

When the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is 0, and the coordinate value on the vertical coordinate axis is not 0, it is determined that the second part of the signaling domain adopts IEEE802 .The modulation method used in the second part of the signaling domain described in the 11n standard;

Determining that the second part of the signaling domain adopts a third modulation method further includes: when the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is not 0, and in When the coordinate value of the vertical coordinate axis is 0, determine the position on the constellation diagram where the second OFDM symbol in the second part of the signaling domain is mapped;

When the coordinate value of the second OFDM symbol mapped to the position on the constellation diagram on the horizontal coordinate axis is 0, and the coordinate value on the vertical coordinate axis is not 0, determine the second part of the signaling domain. The modulation method used in the second part of the signaling domain described in the IEEE802.11ac standard is adopted.

5. The method according to claim 3 or 4, wherein the determining the position on the constellation diagram where the first OFDM symbol in the second part of the signaling domain is mapped includes:

Perform analog-to-digital conversion on the first OFDM symbol in the second part of the signaling domain to obtain the signal on the horizontal coordinate axis and the signal on the vertical coordinate axis of the first OFDM symbol;

Obtain the baseband signal of the signal on the horizontal coordinate axis, perform filtering and sampling processing on the baseband signal, obtain the sampled signal of the signal on the horizontal coordinate axis, and judge the sampled signal through a 3-value judger to obtain the horizontal coordinates The judgment value of the axis;

Obtain the baseband signal of the signal on the vertical coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain the sampled signal of the signal on the vertical coordinate axis, and judge the sampled signal through a 3-value judger to obtain the vertical coordinate The judgment value of the axis;

The position of the first OFDM symbol mapped to the constellation diagram is determined based on the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis; wherein, when the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis When the value satisfies the judgment condition, it is judged that the coordinate value of the position where the first OFDM symbol is mapped to the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is not 0; when the horizontal coordinate When the judgment value of the axis and the judgment value of the vertical coordinate axis do not meet the judgment conditions, it is judged that the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is 0 or the coordinate value on the vertical coordinate axis is 0 0; Among them, the judgment conditions include any of the following: The judgment value of the horizontal coordinate axis and the vertical coordinate axis are both "+1", the judgment value of the horizontal coordinate axis and the vertical coordinate axis are both "-1", and the judgment value of the horizontal coordinate axis is "-1". The decision value and the decision value of the vertical coordinate axis are both "-Γ" and the decision value of the horizontal coordinate axis and the vertical coordinate axis are "-Γ and "+1" respectively.

6. The method of claim 2, characterized in that: demodulating OFDM symbols in the second part of the signaling domain, and judging the content of the signaling domain based on the demodulated content. The modulation methods used in the second part include:

Using the demodulation of the second modulation method to demodulate the OFDM symbols in the second part of the signaling domain to obtain the first demodulation content;

Perform CRC on the first demodulated content through the obtained cyclic redundancy code check CRC information. When the check passes, it is determined that the second part of the signaling domain is adopted as the second modulation mode.

7. The method according to claim 6, characterized in that: demodulating the OFDM symbols in the second part of the signaling domain, and judging the content of the signaling domain based on the demodulated content. The modulation method used in the second part further includes:

Using the demodulation of the third modulation method to demodulate the OFDM symbols in the second part of the signaling domain to obtain the second demodulation content;

CRC is performed on the second demodulated content using the obtained CRC information, and when the verification passes, the second part of the signaling domain is adopted as the third modulation method; wherein, the third modulation method includes:

8. The method according to claim 4 or 7, characterized in that, the method further includes: when the second part adopts the third modulation method, subjecting the third part to the third modulation method. The information obtained through demodulation is used as the information carried by the second part.

9. The method according to any one of claims 1-7, characterized in that, the third part of the signaling domain The second part is used to carry at least one of the following information:

Information on the number of antennas used to transmit the payload of the data unit, CRC information, identification information of the sending site in single-user transmission mode, identification information of the network to which it belongs, and information used to indicate the use of each user in multi-user transmission mode Information on the number of code streams and characteristic parameters of the data unit in which the signaling domain is located.

10. The method of claim 9, wherein the characteristic parameters of the data unit in which the signaling domain is located include:

3.

11. The method according to any one of claims 1 to 7, characterized in that the first part of the signaling domain is the existing equipment signaling L-SIG domain, and the second part of the signaling domain is The signaling SIG field located after the L-SIG field in the signaling field.

12. A signaling domain sending method, characterized by including:

Generate a signaling domain, wherein the first part of the signaling domain adopts a first modulation method, the second part of the signaling domain adopts a second modulation method, and the second modulation method is a fourth-order or more than fourth-order modulation; The first part and the second part are respectively sent to the demodulation device.

13. The method of claim 12, characterized in that the second part of the signaling domain is used to carry at least one of the following information:

Information on the number of antennas used to transmit the payload of the data unit, CRC information, identification information of the sending station in single-user transmission mode, identification information of the network to which it belongs, and information used to represent each user in multi-user transmission mode. Information on the number of code streams and characteristic parameters of the data unit in which the signaling domain is located.

14. The method according to claim 13, characterized in that the data unit where the signaling domain is located The sequence number of the subchannel used by the data unit and/or the number of subchannels used by the data unit

3.

15. The method of claim 12, wherein the first part of the signaling domain is an existing device signaling L-SIG domain, and the second part of the signaling domain is an existing device signaling L-SIG domain. The signaling SIG field located after the L-SIG field.

16. A signaling domain receiving device, characterized in that it includes: a receiving unit, a judging unit and a first obtaining unit, wherein:

The receiving unit is configured to receive the first part of the signaling domain in a first modulation mode;

The judging unit is configured to judge the modulation method adopted by the second part of the signaling domain after the receiving unit has received the first part;

The first acquisition unit is configured to use the information obtained by demodulating the second part through the second modulation method as the second modulation method when the judgment unit sends the second part using the second modulation method. The information carried by the second part; among them, the second modulation method is fourth-order or more than fourth-order modulation.

17. The device according to claim 16, wherein the judging unit is configured to: after the receiving unit has received the first part, based on the orthogonal frequency in the second part of the signaling domain Division multiplexing technology OFDM symbols determine the modulation method used in the second part of the signaling domain; or

The judgment unit is configured to demodulate the OFDM symbols in the second part of the signaling domain after the receiving unit has received the first part, and judge the signaling according to the demodulated content. The modulation method used in the second part of the domain.

18. The device of claim 17, wherein the judging unit is configured to judge the first OFDM in the second part of the signaling domain after the receiving unit has received the first part. The symbol is mapped to a position on the constellation diagram, and the modulation method used in the second part of the signaling domain is determined based on the position where the first OFDM symbol is mapped to the constellation diagram; wherein, when the first OFDM symbol is mapped to a position on the constellation diagram, When the coordinate value of the position on the horizontal coordinate axis mapped to the OFDM symbol on the constellation diagram is not 0, and when the coordinate value of the vertical coordinate axis is not 0, it is determined that the second part of the signaling domain adopts the second modulation Method; When the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is 0 or the coordinate value on the vertical coordinate axis is 0, it is determined that the second part of the signaling domain adopts the third Three modulation methods, wherein the third modulation method includes:

19. The device according to claim 18, wherein the judgment unit is further configured to: when the position of the first OFDM symbol mapped to the constellation diagram has a coordinate value on the horizontal coordinate axis of 0, and on the vertical axis When the coordinate value of the coordinate axis is not 0, it is determined that the second part of the signaling domain adopts the modulation method used in the second part of the signaling domain in the IEEE802.11n standard;

The judgment unit is also configured to judge the information when the coordinate value of the position on the constellation diagram mapped to the first OFDM symbol on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is 0. Let the second OFDM symbol in the second part of the domain be mapped to the position on the constellation diagram; When the second OFDM symbol is mapped to the position on the constellation diagram, the coordinate value on the horizontal coordinate axis is 0, and on the vertical coordinate When the coordinate value of the axis is not 0, it is determined that the second part of the signaling domain adopts the modulation method used in the second part of the signaling domain in the IEEE802.11ac standard.

20. The device according to claim 18 or 19, characterized in that the judgment unit includes an analog-to-digital conversion unit, configured to perform the third part of the signaling domain after the receiving unit has received the first part. The first OFDM symbol in the two parts undergoes analog-to-digital conversion to obtain the signal on the horizontal coordinate axis and the signal on the vertical coordinate axis of the first OFDM symbol;

The first decision unit is used to obtain the baseband signal of the signal on the horizontal coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain the sampled signal of the signal on the horizontal coordinate axis, and use a 3-value judger to The sampled signal is judged to obtain the judgment value of the horizontal coordinate axis;

The second decision unit is used to obtain the baseband signal of the signal on the vertical coordinate axis, and perform filtering and sampling processing on the baseband signal to obtain the sampled signal of the signal on the vertical coordinate axis, and use a 3-value judger to The sampled signal is judged to obtain the judgment value of the vertical coordinate axis;

The first judgment subunit is used to judge the position of the first OFDM symbol mapped to the constellation diagram based on the judgment value of the horizontal coordinate axis and the judgment value of the vertical coordinate axis; wherein, when the water level When the judgment value of the horizontal coordinate axis and the judgment value of the vertical coordinate axis meet the judgment conditions, it is judged that the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is not 0. The coordinate value of is not 0; when the judgment value of the horizontal coordinate axis and the judgment value of the vertical coordinate axis do not meet the judgment condition, it is judged that the position of the first OFDM symbol mapped to the constellation diagram is at the coordinate of the horizontal coordinate axis The value is 0 or the coordinate value on the vertical coordinate axis is 0; wherein, the judgment conditions include any of the following:

The judgment value of the horizontal coordinate axis and the vertical coordinate axis are both "+1", the judgment value of the horizontal coordinate axis and the vertical coordinate axis are both "-1", and the judgment value of the horizontal coordinate axis is "-1". The judgment value and the judgment value of the vertical coordinate axis are both "-Γ and "-Γ respectively, and the judgment value of the horizontal coordinate axis and the judgment value of the vertical coordinate axis are "-Γ and "+Γ respectively;

The second determination subunit is used to determine the modulation mode adopted in the second part of the signaling domain according to the position of the first OFDM symbol mapped to the constellation diagram.

21. The device of claim 17, wherein the judgment unit includes: a first demodulation unit, configured to use the second modulation method after the receiving unit has received the first part. Demodulate the OFDM symbols in the second part of the signaling domain to obtain the first demodulation content;

The first check unit is configured to perform CRC on the first demodulated content through the obtained cyclic redundancy code check CRC information. When the check passes, it is determined that the second part of the signaling domain is adopted as the Describe the second modulation method.

22. The device according to claim 21, wherein the judgment unit further includes:

The second demodulation unit is configured to demodulate the OFDM symbols in the second part of the signaling domain using demodulation of the third modulation method to obtain the second demodulation content;

The fourth verification unit is configured to perform CRC on the second demodulated content through the obtained CRC information. When the verification passes, the second part of the signaling domain is adopted as the third modulation method; wherein, The third modulation method includes:

The modulation method used in the second part of the signaling domain described in the IEEE802.11n standard; or The modulation method used in the second part of the signaling domain described in the IEEE802.11ac standard.

23. The device according to claim 19 or 22, characterized in that, the device further includes: a second acquisition unit, configured to: when the judgment unit judges that the second part adopts the third modulation method, The information obtained by demodulating the third part through the third modulation method is used as the information carried by the second part.

24. The device according to any one of claims 16-22, characterized in that the second part of the signaling field is used to carry at least one of the following information:

25. The apparatus according to any one of claims 16 to 22, wherein the first part of the signaling domain is the existing equipment signaling L-SIG domain, and the second part of the signaling domain is The signaling SIG field located after the L-SIG field in the signaling field.

26. A signaling domain sending device, characterized in that it includes: a generating unit and a sending unit, wherein:

The generating unit is used to generate a signaling domain, wherein the first part of the signaling domain adopts a first modulation method, the second part of the signaling domain adopts a second modulation method, and the second modulation method is fourth-order or modulation beyond fourth order;

The sending unit is configured to send the first part and the second part generated by the generating unit to the demodulation device respectively.

27. The device according to claim 26, wherein the second part of the signaling field is used to carry at least one of the following information:

Information on the number of antennas used to transmit the payload of the data unit, CRC information, single Identification information of the sending site in user transmission mode, identification information of the network to which it belongs, information indicating the number of code streams used by each user in multi-user transmission mode, and characteristic parameters of the data unit where the signaling domain is located.

28. The device of claim 26, wherein the first part of the signaling domain is the existing equipment signaling L-SIG domain, and the second part of the signaling domain is the The signaling SIG field located after the L-SIG field.

29. A signaling domain receiving device, characterized in that it includes: a receiver and a memory, and a processor connected to the receiver and the memory respectively, the memory is used to store program code, and the processor is used to call The program code stored in the memory performs the following operations:

receiving, by the receiver, a first portion of the signaling domain in a first modulation scheme;

After receiving the first part, determine the modulation mode adopted by the second part of the signaling domain; when the second part adopts the second modulation mode, pass the second part through the second modulation mode. The information obtained by demodulation is used as the information carried by the second part; wherein, the second modulation method is a fourth-order or more than fourth-order modulation.

30. The device according to claim 29, wherein the operation performed by the processor to determine the modulation mode used in the second part of the signaling domain includes:

31. The apparatus of claim 30, wherein the processor determines the modulation mode used in the second part of the signaling domain based on the OFDM symbols in the second part of the signaling domain. operations, including:

Determine the position of the first OFDM symbol in the second part of the signaling domain mapped to the constellation diagram, and determine the location of the signaling domain based on the position of the first OFDM symbol mapped to the constellation diagram. The modulation method used in the second part; wherein, when the coordinate value of the position on the constellation diagram mapped to the first OFDM symbol is not 0 on the horizontal coordinate axis, and the coordinate value on the vertical coordinate axis is not 0, Determine that the second part of the signaling domain adopts the second modulation mode; When the first OFDM symbol is mapped to the position on the constellation diagram, the coordinate value on the horizontal coordinate axis is 0 or the coordinate value on the vertical coordinate axis When it is 0, it is determined that the second part of the signaling domain adopts the third modulation method, where the third modulation method includes:

32. The device according to claim 31, wherein the operation performed by the processor to determine whether the second part of the signaling domain adopts a third modulation method includes:

The operation performed by the processor to determine whether the second part of the signaling domain adopts the third modulation method further includes:

When the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is 0, it is determined that the second part of the signaling domain is The second OFDM symbol is mapped to the position on the constellation diagram;

33. The apparatus according to claim 30 or 31, wherein the processor performs an operation of determining where the first OFDM symbol in the second part of the signaling domain is mapped to a position on the constellation diagram. , include:

Obtain the baseband signal of the signal on the horizontal coordinate axis, and filter and decimate the baseband signal. Through sample processing, the sampled signal of the signal on the horizontal coordinate axis is obtained, and the sampled signal is judged by a 3-value judger to obtain the judgment value of the horizontal coordinate axis;

The position of the first OFDM symbol mapped to the constellation diagram is determined based on the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis; wherein, when the decision value of the horizontal coordinate axis and the decision value of the vertical coordinate axis When the value satisfies the judgment condition, it is judged that the coordinate value of the position where the first OFDM symbol is mapped to the constellation diagram on the horizontal coordinate axis is not 0, and the coordinate value on the vertical coordinate axis is not 0; when the horizontal coordinate When the judgment value of the axis and the judgment value of the vertical coordinate axis do not meet the judgment conditions, it is judged that the coordinate value of the first OFDM symbol mapped to the constellation diagram on the horizontal coordinate axis is 0 or the coordinate value on the vertical coordinate axis is 0 0; Among them, the judgment conditions include any of the following:

The judgment value of the horizontal coordinate axis and the vertical coordinate axis are both "+1", the judgment value of the horizontal coordinate axis and the vertical coordinate axis are both "-1", and the judgment value of the horizontal coordinate axis is "-1". The decision value and the decision value of the vertical coordinate axis are both "-Γ" and the decision value of the horizontal coordinate axis and the vertical coordinate axis are "-Γ and "+1" respectively.

34. The device of claim 30, wherein the processor demodulates the OFDM symbols in the second part of the signaling domain, and determines the The operation of the modulation method used in the second part of the signaling domain includes:

35. The device of claim 34, wherein the processor demodulates the OFDM symbols in the second part of the signaling domain, and determines the The operation of the modulation method used in the second part of the signaling domain further includes:

Using the third modulation method to demodulate the OFDM symbols in the second part of the signaling domain Demodulate to obtain the second demodulated content;

Perform CRC on the second demodulated content using the obtained CRC information. When the verification passes, the second part of the signaling domain is adopted as the third modulation method; wherein, the third modulation method includes:

36. The device according to claim 32 or 35, wherein the processor is further configured to perform the following operations:

When the second part adopts the third modulation method, the information obtained by demodulating the third part through the third modulation method is used as the information carried by the second part.

37. The device according to any one of claims 29-36, characterized in that the second part of the signaling field is used to carry at least one of the following information:

38. A signaling domain sending device, characterized in that it includes: a transmitter and a memory, and a processor connected to the transmitter and the memory respectively, the memory is used to store program code, and the processor is used to call The program code stored in the memory performs the following operations:

Generate a signaling domain, wherein the first part of the signaling domain adopts a first modulation method, the second part of the signaling domain adopts a second modulation method, and the second modulation method is a fourth-order or more than fourth-order modulation; The transmitter is used to send the first part and the second part to the demodulation device respectively.

39. The device according to claim 38, characterized in that the second part of the signaling domain is used to carry at least one of the following information: