CN102036380B - Method, system and device for receiving downlink feedback information - Google Patents

Abstract

The embodiment of the invention relates to wireless communication technology, in particular to a method, a system and a device for receiving downlink feedback information. The method, the system and the device for receiving the downlink feedback information are used for solving the problem that a relay node (RN) device of a long term evolution-advanced (LTE-A) system determines downlink feedback channel resources through complicated computation. The method provided by the embodiment of the invention comprises the following steps of: determining the configuration information of the downlink feedback channel resources corresponding to the relay device according to the corresponding downlink feedback channel resources distributed to the relay device; and sending the determined the configuration information of the downlink feedback channel resources to the corresponding relay device for indicating the relay device to receive the downlink feedback information in a corresponding downlink feedback channel according to the received configuration information of the downlink feedback channel resources. When the method, the system and the device provided by the embodiment of the invention are adopted, the relay device can accurately find the corresponding downlink feedback channel and receive the downlink feedback information, so that the complication of the downlink feedback channel resources determination by the relay device is reduced.

Description

A kind of mthods, systems and devices that receive downlink feedback information

Technical field

The present invention relates to wireless communication technology, particularly a kind of mthods, systems and devices that receive downlink feedback information.

Background technology

LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system has defined with lower node, interface and link after introducing Relay (relaying) node, as shown in Figure 1,

Node comprises:

Donor-eNB: with RN (relaying) equipment the eNB (evolution base station) of wireless connections is arranged, be abbreviated as DeNB;

Relay-Node: be present in the entity between DeNB and the UE, be abbreviated as RN equipment;

Relay-UE: the UE with RN equipment carries out data interaction is abbreviated as R-UE;

Grand UE: directly and the DeNB UE that carries out data interaction.

Interface comprises:

Un interface: the interface between RN equipment and the DeNB;

Interface between Uu interface: UE and the RN equipment.

Radio Link comprises:

Backhaul link: back haul link, with Un interface link corresponding;

Access link: access link, with Uu interface link corresponding;

Direct link: the direct projection link, DeNB and grand UE carry out the link of transfer of data.

Downlink transfer behind the introducing RN equipment: the data that arrive UE under the RN equipment need send to RN equipment through descending back haul link by DeNB, send to UE by RN equipment through descending access link again.

Uplink behind the introducing RN equipment: the uplink of UE sends to RN equipment by UE through up access link earlier under the RN equipment, sends to DeNB by RN equipment through back haul link again.

In the LTE system, user terminal is by PUSCH (Physical Uplink Shared Channel, physical uplink link sharing channel) behind the transmission upstream data, the base station receives upstream data, whether decode correctly according to receiving data, PHICH (Physical Hybrid ARQ Indicator Channel, the automatic repetitive requests indicating channel of physical mixed) is passed through to user terminal feeding back ACK or NACK in the base station; User terminal detects PHICH after sending data, determine to send successfully after receiving ACK, after receiving NACK, determines to send failure, resends then.

But at present in the LTE-A system, RN equipment by PUSCH after the base station sends data, must just can know the downstream feedback channel resource of distributing to self according to other calculating that receives the information via complexity, so the complexity of RN Equipment Inspection downstream feedback channel increases, thereby increased the complexity that RN equipment receives downlink feedback information.

Summary of the invention

The embodiment of the invention provides a kind of mthods, systems and devices that receive downlink feedback information, RN equipment need adopt complicated calculations to determine the downstream feedback channel resource in the LTE-A system in order to solve, thereby increases the problem that RN equipment receives the downlink feedback information complexity.

A kind of method that receives downlink feedback information that the embodiment of the invention provides, this method comprises:

According to the corresponding downstream feedback channel resource that distributes for trunking, determine the downstream feedback channel resource configuration information of trunking correspondence;

The downstream feedback channel resource configuration information of described trunking correspondence comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

The downstream feedback channel resource configuration information of determining is sent to corresponding trunking, be used to indicate described trunking, at the downstream feedback channel reception downlink feedback information of correspondence according to the downstream feedback channel resource configuration information of receiving.

A kind of system that receives downlink feedback information that the embodiment of the invention provides, this system comprises

The base station is used for determining the downstream feedback channel resource configuration information of trunking correspondence according to the corresponding downstream feedback channel resource for the trunking distribution, and the downstream feedback channel resource configuration information of determining is sent to corresponding trunking; The downstream feedback channel resource configuration information of described trunking correspondence comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

Trunking is used for according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

A kind of base station that the embodiment of the invention provides, this base station comprises:

The information determination module is used for determining the downstream feedback channel resource configuration information of trunking correspondence according to the corresponding downstream feedback channel resource for the trunking distribution; The downstream feedback channel resource configuration information of described trunking correspondence comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

Sending module, the downstream feedback channel resource configuration information that is used for determining sends to corresponding trunking, is used to indicate described trunking according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

The embodiment of the invention is according to the corresponding downstream feedback channel resource that distributes for trunking, determine the downstream feedback channel resource configuration information of trunking correspondence, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking, be used to indicate trunking according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.Owing to downstream feedback channel resource configuration information can be notified to corresponding trunking, thereby can make trunking accurately find corresponding downstream feedback channel and receive downlink feedback information, reduce trunking and determined the complexity of downstream feedback channel resource, thereby reduced the complexity of trunking reception downlink feedback information, improved the efficient of trunking.

Description of drawings

Fig. 1 is the structural representation of embodiment of the invention LTE-A system;

Fig. 2 A is the structural representation of relaying down control channel;

Fig. 2 B is a downlink feedback information handling process schematic diagram;

Fig. 3 receives the system configuration schematic diagram of downlink feedback information for the embodiment of the invention;

Fig. 4 is the structural representation of embodiment of the invention base station;

Fig. 5 is the structural representation of embodiment of the invention trunking;

Fig. 6 A is the distribution map of the embodiment of the invention on different OFDM (Orthogonal Frequency DivisionMultiplexing, OFDM) symbol;

Descending feedback channel group mapping schematic diagram when Fig. 6 B is the continuous frequency domain resource of embodiment of the invention relaying down control channel;

Descending feedback channel group mapping schematic diagram when Fig. 6 C is the discontinuous frequency domain resource of embodiment of the invention relaying down control channel;

The mapping schematic diagram that Fig. 7 distributes for embodiment of the invention dedicated resources;

Receive the method flow schematic diagram of downlink feedback information among Fig. 8 for the embodiment of the invention.

Embodiment

The embodiment of the invention is according to the corresponding downstream feedback channel resource that distributes for trunking, determine the downstream feedback channel resource configuration information of trunking correspondence, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking, be used to indicate trunking according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.Owing to downstream feedback channel resource configuration information can be notified to corresponding trunking, thereby can make trunking accurately find corresponding downstream feedback channel and receive downlink feedback information, reduce the complexity that trunking is determined the downstream feedback channel resource.

Wherein, via node adopts MB SFN (Multicast Broadcast Single FrequencyNetwork, Multicast Broadcast Single Frequency Network) subframe is used for the downlink transfer of backhaul link, this subframe previous or two OFDM symbols are used for the downlink transfer of access link, so via node can't receive the down control channel of eNB (evolution base station).At the PDSCH of eNB descending sub frame (PhysicalDownlink Shared Channel, physical down link sharing channel) area dividing goes out a part of zone and is used as the relaying down control channel, comprise R-PHICH (Relay Physical Hybrid ARQ IndicatorChannel, the relaying Physical HARQ Indicator Channel) and R-PDCCH (Relay Physical DownlinkControl Channel, the relaying Physical Downlink Control Channel), if the relaying down control channel resources adopts the dynamical fashion configuration, also comprise R-PCFICH (Relay Physical Control Format IndicatorChannel, relaying Physical Control Format Indicator Channel).This down control channel resources takies the part or all of OFDM symbol of a subframe on time domain, take part PRB at frequency domain, and these PRB can be continuous, also can be (promptly discontinuous) of dispersing, specifically can be referring to Fig. 2 A.

In the LTE system, the resource of PHICH is mainly passed through a parameter to indicating: Wherein Be the numbering of PHICH group,

It is the orthogonal sequence index value.The PHICH group refers to one group of RE (Resource Element, Resource Unit).The interior PHICH interchannel of PHICH group is distinguished by orthogonal sequence, for Normal (routine) CP (cyclic prefix, Cyclic Prefix) 8 orthogonal sequences is arranged, and for Extended (expansion) CP 4 orthogonal sequences is arranged.Each PHICH group can comprise 8 PHICH at most when that is to say Normal CP, and each PHICH group can comprise 4 PHICH at most during Extended CP.

For the frame structure Class1, i.e. FDD frame structure, the number of PHICH group is by formula one:

... .... formula one.

N wherein _g{ 1/6,1/2,1,2} is provided by high level ∈.

For frame structure type 2, i.e. tdd frame structure, the number of PHICH group changes in different descending sub frames, can be expressed as

M wherein _iValue as shown in table 1,

Value calculate by the formula one that provides in the top frame structure Class1.

The factor m of table 1 frame structure type 2 _iValue

For user terminal, need be by parameter and the formula two and the formula three of network side notice, calculating can represent that the parameter of PHICH channel resource is right:

$n_{\mathrm{PHICH}}^{\mathrm{group}}=(I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}+n_{\mathrm{DMRS}})\mathrm{mod}{N}_{\mathrm{PHICH}}^{\mathrm{group}}+I_{\mathrm{PHICH}}{N}_{\mathrm{PHICH}}^{\mathrm{group}}$ ... .. formula two.

$n_{\mathrm{PHICH}}^{\mathrm{seq}}=(\frac{I_{\mathrm{PRB}\_\mathrm{RA}}^{\mathrm{lowest}\_\mathrm{index}}}{N_{\mathrm{PHICH}}^{\mathrm{group}}}+n_{\mathrm{DMRS}})\mathrm{mod}2N_{\mathrm{SF}}^{\mathrm{PHICH}}$ ... .. formula three.

Wherein, n _DMRSExpression DMRS (Demodulation Reference Symbol, demodulation reference mark) cyclic shift value, PDCCH (physical downlink control channel, Physical Downlink Control Channel) DCI (Downlink Control Information, Downlink Control Information) format0 comprises the cyclic shift indication of DMRS, and user terminal just can obtain cyclic shift value according to table 2 by the cyclic shift indication;

The spreading factor size of expression PHICH modulation, normal CP duration is 4, extended CP duration is 2;

Represent the corresponding PRB numbering of minimum PRB (physical resourceblock, Physical Resource Block) of PUSCH transmission in first time slot, user terminal obtains by the resource indication territory of PDCCH DCI format0;

It is the PHICH number in PHICH group of value;

The circulation in demodulation reference mark territory skew in the descending control information format 0	n DMRS
		000	0
001	1
		010	2
011	3
		100	4
101	5
		110	6
111	7

Table 2n _DMRSMapping relations with the cyclic shift in demodulation reference mark territory in the descending control information format 0

Shown in Fig. 2 B, the base station sends in the schematic diagram of ACK/NACK information, the interior all 1bit ACK/NACK information via treble of PHICH group is encoded again and is formed the coded message of 3bits, forms 3 modulation symbols by the BPSK modulation then, and each modulation symbol through length is

The quadrature spread sequence extension form orthogonal sequence, sequence spreading is as shown in table 3, then each orthogonal sequence is carried out scrambling, the scrambling orthogonal sequence of different ACK/NACK correspondences in the PHICH group is superposeed, when normal CP, form 12 symbols altogether, be mapped in respectively on 3 REG (Resource ElementGroup, resource unit group), each REG comprises 4 RE.Under many antenna scenario, after the orthogonal sequence scrambling by being mapped on the resource of different antennae port after the operations such as layering, precoding and stack.

PHICH component is that three parts are evenly distributed on the REG that whole frequency band do not take by PCFICH, can take 1,2 or 3 OFDM symbol in time domain, and concrete condition is as shown in table 3.

Length of field when showing the PHICH under 3MBSFN subframe and the non-MBSFN subframe

The user terminal basis

The affiliated PHICH of PHICH that determines self organizes the resource that takies, then by the ACK/NACK information of definite resource reception from the base station, because the ACK/NACK information stack back that same PHICH group is corresponding sends when sending in the base station, so the user terminal basis

Just can from the ACK/NACK information of receiving, detect the ACK/NACK information of self correspondence.

Base station in the embodiment of the invention can be an evolution base station.

Below in conjunction with Figure of description the embodiment of the invention is described in further detail.

As shown in Figure 3, the system of embodiment of the invention reception downlink feedback information comprises: base station 10 and trunking 20.

Base station 10 is used for determining the downstream feedback channel resource configuration information of trunking 20 correspondences according to the corresponding downstream feedback channel resource for trunking 20 distribution, sends the downstream feedback channel resource configuration information that will determine.

Trunking 20 is used for according to the downstream feedback channel resource configuration information of receiving from base station 10, at the downstream feedback channel reception downlink feedback information of correspondence.

Wherein, the downstream feedback channel resource configuration information of trunking 20 correspondences comprises a kind of in the following message:

The index value of the downstream feedback channel group of trunking 20 correspondences;

The orthogonal sequence index value of trunking 20 in the downstream feedback channel group of correspondence;

The index value of the running time-frequency resource of the downstream feedback channel group mapping of trunking 20 correspondences;

The index value of the downstream feedback channel group of trunking 20 correspondences and the trunking 20 orthogonal sequence index value in the downstream feedback channel group of correspondence;

The orthogonal sequence index value of trunking 20 correspondences in the index value of the running time-frequency resource of the downstream feedback channel group mapping of trunking 20 correspondences and the downstream feedback channel group;

Wherein, the downstream feedback channel group of trunking 20 correspondences is the downstream feedback channel group under the downstream feedback channel of trunking 20 correspondences, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group.

Trunking 20 can be determined the running time-frequency resource position of downstream feedback channel group according to the index value of the running time-frequency resource that the index value or the downstream feedback channel group of downstream feedback channel group are shone upon, thereby can monitor the downstream feedback channel, and receives downlink feedback information.

The back sends because base station 10 need superpose the sign indicating number sub-sequence of all downlink feedback information correspondences of downstream feedback channel group correspondence, so trunking 20 need extract the downlink feedback information of self correspondence according to orthogonal spreading sequence from the downlink feedback information of receiving.

In specific implementation process, the quantity of downstream feedback channel group is determined according to the quantity of trunking in the macrocell 20 in base station 10, specifically can determine the quantity of downstream feedback channel group according to formula four:

... .... formula four.

Wherein, N _GroupBe the quantity of the downstream feedback channel group that comprises of a relaying down control channel; The quantity of the data flow of trunking transmission when m is the upstream multi-antenna transmission; N is the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group; M, n and N are positive integers.

Then, base station 10 is again according to the type of CP (conventional CP or expansion CP), determine the quantity of the downstream feedback channel in each downstream feedback channel group, the quantity of having determined the downstream feedback channel in each downstream feedback channel group has also just been determined the orthogonal sequence index value in each downstream feedback channel group.

Quantity such as the downstream feedback channel in each downstream feedback channel group is 8, and then the orthogonal sequence index value is 0～7.

The index value that the running time-frequency resource of downstream feedback channel group mapping can further be determined according to the index and the mapping ruler between downstream feedback channel group and the running time-frequency resource of downstream feedback channel group in base station 10.

The index value with the downstream feedback channel group of trunking 20 correspondences can be selected in base station 10

The orthogonal sequence index value of trunking 20 in the downstream feedback channel group of correspondence

Place downstream feedback channel resource configuration information with in the index value of the running time-frequency resource of the downstream feedback channel group of trunking 20 correspondences mapping one or more.

Index value difference in the downstream feedback channel resource configuration information, the processing of trunking 20 also can be different, describe respectively below.

If mode one base station 10 places downstream feedback channel resource configuration information with the index value of downstream feedback channel group, then trunking 20 need be determined the orthogonal sequence index value according to formula three;

Concrete, when trunking 20 comprises the index value of downstream feedback channel group in the downstream feedback channel resource configuration information of receiving, according to the index value of downstream feedback channel group and the mapping ruler between downstream feedback channel group and the time frequency unit, determine the running time-frequency resource position of corresponding downstream feedback channel group, receive and detect corresponding downlink feedback information according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining.

Each element in the formula three:

The resource indication territory of the descending control information format 0 of the relaying down control channel by the base station obtains; n _DMRSThe circulation in DMRS territory skew mapping obtains in the descending control information format 0 of the relaying down control channel by the base station; With

Dispose by high level.

If mode two base stations 10 place downstream feedback channel resource configuration information with the orthogonal sequence index value, then trunking 20 need be determined the index value of downstream feedback channel group according to formula two;

Concrete, when trunking 20 comprises the orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of self determining, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Each element in the formula two:

The resource indication territory of the descending control information format 0 of the relaying down control channel by the base station obtains; n _DMRSThe circulation in DMRS territory skew mapping obtains in the descending control information format 0 of the relaying down control channel by the base station;

Dispose by high level; I _PHICHDetermine according to frame structure configuration and subframe numbering.

If mode three base stations 10 place downstream feedback channel resource configuration information with the index value of the running time-frequency resource of downstream feedback channel group correspondence, then trunking 20 need be determined the orthogonal sequence index value according to formula three;

Concrete, when trunking 20 comprises the index value of running time-frequency resource of downstream feedback channel group correspondence in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining, receive and detect corresponding downlink feedback information.

If mode four base stations 10 place downstream feedback channel resource configuration information with the index value and the orthogonal sequence index value of downstream feedback channel group, then trunking 20 does not need to determine any index value, only needs to receive and detect according to the index value of receiving;

Concrete, when trunking 20 comprises the index value of downstream feedback channel group and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, according to the index value of the downstream feedback channel group of receiving and the mapping ruler between downstream feedback channel group and the time frequency unit, determine the running time-frequency resource position of corresponding downstream feedback channel group, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

If mode five base stations 10 place downstream feedback channel resource configuration information with the index value and the orthogonal sequence index value of the running time-frequency resource of downstream feedback channel group correspondence, then trunking 20 does not need to determine any index value, only needs to receive and detect according to the index value of receiving;

Concrete, when trunking 20 comprises the index value of running time-frequency resource of downstream feedback channel group correspondence and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Wherein, mode four is compared mode one～three with mode five, does not need trunking 20 to determine any index value, so can reduce the burden and the amount of calculation of trunking 20.

The sort of mode in concrete employing mode one～mode five can be set as required, also can stipulate in agreement, can also be consulted to determine by base station 10 and trunking 20.

If the quantity of the data flow that trunking 20 sends during the upstream multi-antenna transmission is a plurality of (m is greater than 1), can in a downstream feedback channel, carry the downlink feedback information of a plurality of data flow correspondences, at this moment need to reserve m resource doubly and give the downstream feedback channel, quantity such as data flow is 5, and the resource that then needs to reserve 5 times is given the downstream feedback channel.

A kind of preferable mode is that combined coding and/or high order modulation are carried out with m the corresponding downlink feedback information of stream in base station 10, the number of identical downstream feedback channel group when forming with m=1, that is to say the resource that equates when taking with m=1, this is not need to reserve m resource doubly to give the downstream feedback channel, thereby has saved resource.

Concrete, when a trunking 20 sends a plurality of data flow in the upstream multi-antenna transmission, after combined coding and/or high order modulation are carried out with the downlink feedback information of a plurality of data flow correspondences of each trunking 20 in base station 10, send processing, information mapping after the transmission processing on the running time-frequency resource of the feedback resources group correspondence of trunking 20 correspondences, is sent to trunking 20.

That is to say that upstream multi-antenna when transmission trunking sends a plurality of data flow, the quantity of the downstream feedback channel group the when quantity of the downstream feedback channel group that relaying down control channel comprises sends individual traffic with trunking is identical.

Combined coding and/or high order modulation: combined coding is that the feedback informations that a plurality of stream is corresponding carry out cascade, then according to the coded system of determining with cascade after sequence be encoded into the coded sequence of target length; High order modulation is meant becomes a complex value symbol with a plurality of coded-bits according to modulation constellation.

Wherein, if combined coding is carried out in base station 10, then send processing and comprise: the combined coding sequence is carried out repeated encoding, modulation, modulation symbol is carried out spread spectrum, scrambling and overlap-add procedure, be mapped on the running time-frequency resource then.If descending employing multi-antenna transmitting is defeated, also to carry out layering and pre-encode operation between scrambling and the stack, be mapped to after the stack on the running time-frequency resource of antenna port.

It is when if base station 10 is carried out high order modulation or carried out combined coding and high order modulation simultaneously, identical when then sending processing and not carrying out combined coding and/or high order modulation.

If combined coding and/or high order modulation are not carried out in base station 10, then processing procedure can be referring to Fig. 2 B, wherein, if descending employing multi-antenna transmitting is defeated, also to carry out layering and pre-encode operation between scrambling and the stack, be mapped to after the stack on the running time-frequency resource of antenna port.

In specific implementation process, base station 10 can place downstream feedback channel resource configuration information in RRC (Radio Resource Control, the Radio Resource control) signaling, sends to corresponding trunking 20.

Need to prove that the embodiment of the invention is not limited to the RRC signaling, any mode that downstream feedback channel resource configuration information can be sent to trunking 20 all is suitable for the embodiment of the invention.

If the resource location of relaying down control channel did not change in a period of time, then the resource at this section downstream feedback channel occupancy of trunking 20 correspondences in the time is identical.

Further, when base station 10 changes at the resource location of relaying down control channel, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking 20.

As shown in Figure 6A, when the resource that configurating downlink feedback channel group takies, the running time-frequency resource that the downstream feedback channel group of trunking 20 correspondences is shone upon can be distributed at least one OFDM symbol in time domain, and be not more than the relaying down control channel at the OFDM symbol quantity that time domain takies, specifically be distributed on what OFDM symbols and can set as required.

If the relaying down control channel distributes a plurality of continuous PRB at frequency domain, base station 10 need be to the downlink feedback information of each downstream feedback channel group, carry out operations such as repeated encoding, modulation, quadrature spread, scrambling, stack (under the defeated situation of descending multi-antenna transmitting, also to pass through operations such as layering, precoding between scrambling and the stack), and distribute on the bandwidth on unappropriated three REG (being 1/3rd bandwidth that are spaced apart between per two REG) being mapped in equably on the frequency domain, specifically can be referring to Fig. 6 B;

If the relaying down control channel distributes a plurality of discrete PRB at frequency domain, then need from logic a plurality of PRB being connected into continuous PRB resource.The downlink feedback information of each down control channel group need be carried out operations such as repeated encoding, modulation, quadrature spread, scrambling, stack (under the defeated situation of descending multi-antenna transmitting in base station 10, also to pass through operations such as layering, precoding between scrambling and the stack), and be mapped on unappropriated three REG, specifically can be referring to Fig. 6 C.

Just for example, the REG quantity that can take as required is not limited to 3 for Fig. 6 B and Fig. 6 C.That is to say that the running time-frequency resource of the downstream feedback channel group mapping of trunking 20 correspondences is on the unappropriated REG of at least one in the frequency band of relaying down control channel of frequency domain distribution, specifically taking what REG can set as required.

In specific implementation process, if the down control channel resources of each trunking 20 takies exclusive Physical Resource Block, and the physical resource number of blocks is identical, and then the downlink feedback information of each trunking 20 correspondence is mapped at least one Resource Unit or resource unit group in the exclusive Physical Resource Block of these trunking 20 correspondences.Correspondingly, downstream feedback channel resource configuration information content changes.

When sending the downlink feedback information of downstream feedback channel group correspondence, if the modulation symbol that base station 10 forms downlink feedback information modulation back maps directly to one or repeating mapping to a plurality of Resource Units, base station 10 places downstream feedback channel resource configuration information with the Resource Unit index value of trunking 20 correspondences, sends to trunking 20;

If operations such as spread spectrum are carried out with the modulation symbol that downlink feedback information modulation back forms in base station 10, and the sequence behind the spread spectrum is mapped on a plurality of Resource Units or the resource unit group, base station 10 is with the Resource Unit index value or the resource unit group index value of trunking 20 correspondences, and frequency expansion sequence numbering places downstream feedback channel resource configuration information, sends to trunking 20.

The embodiment of the invention is not limited to above-mentioned dual mode, and any mode that downlink feedback information is handled and sent all is suitable for the embodiment of the invention.

Accordingly, trunking 20 is received downstream feedback channel resource configuration information, determine the Resource Unit or the resource unit group index value of downlink feedback information correspondence, if downlink feedback information carries out sending behind the spread spectrum, also will determine the frequency expansion sequence index value, trunking 20 just can receive and detect corresponding downlink feedback information according to resource location of determining and sequence index.

If base station 10 adopts the downlink feedback information with each down control channel group to carry out operations such as repeated encoding, modulation, quadrature spread, scrambling, stack, mapping (under the defeated situation of descending multi-antenna transmitting, scrambling and the stack between also to pass through operations such as layering, precoding) after again the transmission, then trunking 20 need be determined the orthogonal sequence index values according to formula three, and the downlink feedback information of self correspondence in the downlink feedback information of determining to receive according to the orthogonal sequence index value.

Preferable, base station 10 can also place the orthogonal sequence index value downstream feedback channel resource configuration information, and trunking 20 can oneself be determined the orthogonal sequence index value like this, has reduced the amount of calculation of trunking 20.

Concrete which kind of send mode that adopts can be set as required, also can stipulate in agreement, can also be consulted to determine by base station 10 and trunking 20.

When being configured, the Resource Unit that the downlink feedback information of different trunking 20 correspondences takies in relaying down control channel dedicated resources piece or the quantity of resource unit group can be identical with the position.

Specifically as shown in Figure 7, the downlink feedback information of each trunking 20 correspondence takies several fixedly RE (Resource Element, Resource Unit) or REG (Resource ElementGroup, resource unit group) in dedicated resources; Accordingly, trunking 20 detects Resource Unit or resource unit group index value according to the downstream feedback channel resource configuration information from the base station, determine Resource Unit or resource unit group position according to this index value, i.e. the resource location of Dui Ying downstream feedback channel occupancy.

As shown in Figure 4, embodiment of the invention base station comprises: information determination module 100 and sending module 110.

Information determination module 100 is used for determining the downstream feedback channel resource configuration information of trunking correspondence according to the corresponding downstream feedback channel resource for the trunking distribution;

Sending module 110, be used for the downstream feedback channel resource configuration information that information determination module 100 is determined is sent to corresponding trunking, be used to indicate trunking according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

Wherein, the downstream feedback channel resource configuration information of trunking correspondence comprises a kind of in the following message:

The index value of the downstream feedback channel group of trunking correspondence;

The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence;

The index value of the running time-frequency resource of the downstream feedback channel group mapping of trunking correspondence;

The index value of the downstream feedback channel group of trunking correspondence and the trunking orthogonal sequence index value in the downstream feedback channel group of correspondence;

The orthogonal sequence index value of trunking correspondence in the index value of the running time-frequency resource of the downstream feedback channel group mapping of trunking correspondence and the downstream feedback channel group;

Wherein, the downstream feedback channel group of trunking correspondence is the downstream feedback channel group under the downstream feedback channel of trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group.

In specific implementation process, information determination module 100 is determined the quantity of downstream feedback channel group according to the quantity of trunking in the macrocell, specifically can determine the quantity of downstream feedback channel group according to formula four.

Information determination module 100 is in the type (conventional CP or expansion CP) according to CP, determine the quantity of the downstream feedback channel in each downstream feedback channel group, the quantity of having determined the downstream feedback channel in each downstream feedback channel group has also just been determined the orthogonal sequence index value in each downstream feedback channel group.

Quantity such as the downstream feedback channel in each downstream feedback channel group is 8, and then the orthogonal sequence index value is 0～7.

The index value that information determination module 100 can further be determined the running time-frequency resource of downstream feedback channel group mapping according to the index and the mapping ruler between downstream feedback channel group and the running time-frequency resource of downstream feedback channel group.

Information determination module 100 can be selected the index value with the downstream feedback channel group of trunking correspondence The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence

Place downstream feedback channel resource configuration information with in the index value of the running time-frequency resource of the downstream feedback channel group of trunking correspondence mapping one or more.

If the quantity of the data flow that trunking sends during the upstream multi-antenna transmission is a plurality of (m is greater than 1), can in a downstream feedback channel, carry the downlink feedback information of a plurality of data flow correspondences, at this moment need to reserve m resource doubly and give the downstream feedback channel, quantity such as data flow is 5, and the resource that then needs to reserve 5 times is given the downstream feedback channel.

A kind of preferable mode is that sending module 110 carries out combined coding and/or high order modulation with m the corresponding downlink feedback information of stream, the number of identical downstream feedback channel group when forming with m=1, that is to say the resource that equates when taking with m=1, this is not need to reserve m resource doubly to give the downstream feedback channel, thereby has saved resource.

Concrete, when a trunking sends a plurality of data flow in the upstream multi-antenna transmission, after sending module 110 carries out combined coding and/or high order modulation with the downlink feedback information of a plurality of data flow correspondences of each trunking, send processing, information mapping after the transmission processing on the running time-frequency resource of the feedback resources group correspondence of trunking correspondence, is sent to trunking.

Wherein, if sending module 110 carries out combined coding, then send processing and comprise: the combined coding sequence is carried out repeated encoding, modulation, modulation symbol is carried out spread spectrum, scrambling and overlap-add procedure, be mapped on the running time-frequency resource then.If descending employing multi-antenna transmitting is defeated, also to carry out layering and pre-encode operation between scrambling and the stack, be mapped to after the stack on the running time-frequency resource of antenna port.

It is when if sending module 110 carries out high order modulation or carries out combined coding and high order modulation simultaneously, identical when then sending processing and not carrying out combined coding and/or high order modulation.

If sending module 110 does not carry out combined coding and/or high order modulation, then processing procedure can be referring to Fig. 2 B, wherein, if descending employing multi-antenna transmitting is defeated, also to carry out layering and pre-encode operation between scrambling and the stack, be mapped to after the stack on the running time-frequency resource of antenna port.

In specific implementation process, sending module 110 can place the RRC signaling with downstream feedback channel resource configuration information, sends to corresponding trunking.

Need to prove that the embodiment of the invention is not limited to the RRC signaling, any mode that downstream feedback channel resource configuration information can be sent to trunking all is to use the embodiment of the invention.

If the resource location of relaying down control channel did not change in a period of time, then the resource at this section downstream feedback channel occupancy of trunking correspondence in the time is identical.

Further, when sending module 110 changes at the resource location of relaying down control channel, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking.

In specific implementation process, if the down control channel resources of each trunking takies exclusive Physical Resource Block, and the physical resource number of blocks is identical, and then the downlink feedback information of each trunking correspondence is mapped at least one Resource Unit or resource unit group of exclusive Physical Resource Block of this trunking correspondence.Correspondingly, downstream feedback channel resource configuration information content changes.

When sending the downlink feedback information of downstream feedback channel group correspondence, if the modulation symbol that sending module 110 forms downlink feedback information modulation back maps directly to one or repeating mapping to a plurality of Resource Units, information determination module 100 places downstream feedback channel resource configuration information with the Resource Unit index value of trunking correspondence;

If sending module 110 carries out operations such as spread spectrum with the modulation symbol that downlink feedback information modulation back forms, and the sequence behind the spread spectrum is mapped on a plurality of Resource Units or the resource unit group, information determination module 100 is with the Resource Unit or the resource unit group of trunking correspondence, and the frequency expansion sequence numbering places downstream feedback channel resource configuration information.

The embodiment of the invention is not limited to above-mentioned dual mode, and any mode that downlink feedback information is handled and sent all is suitable for the embodiment of the invention.

Sending module 110 is when sending the downlink feedback information of downstream feedback channel group correspondence, if sending module 110 adopts the downlink feedback information with each down control channel group to carry out repeated encoding, modulation, quadrature spread, scrambling, stack, mapping waits operation (under the defeated situation of descending multi-antenna transmitting, also to pass through layering between scrambling and the stack, operations such as precoding) send again after, then information determination module 100 can also place the orthogonal sequence index value downstream feedback channel resource configuration information, avoid trunking oneself to determine the orthogonal sequence index value like this, reduced the amount of calculation of trunking.

As shown in Figure 5, embodiment of the invention trunking comprises: receiver module 200 and processing module 210.

Receiver module 200 is used to receive the downstream feedback channel resource configuration information from the base station, and wherein downstream feedback channel resource configuration information is that the base station is determined according to the corresponding downstream feedback channel resource that distributes for trunking.

Processing module 210 is used for according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

Index value difference in the downstream feedback channel resource configuration information, the processing of trunking 20 also can be different, describe respectively below.

Mode one, downstream feedback channel resource configuration information comprise the index value of downstream feedback channel group, and then processing module 210 need be determined the orthogonal sequence index value according to formula three;

Concrete, when processing module 210 comprises the index value of downstream feedback channel group in the downstream feedback channel resource configuration information of receiving, according to the index value of downstream feedback channel group and the mapping ruler between downstream feedback channel group and the time frequency unit, determine the running time-frequency resource position of corresponding downstream feedback channel group, receive and detect corresponding downlink feedback information according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining.

Mode two, downstream feedback channel resource configuration information comprise the orthogonal sequence index value, and then processing module 210 need be determined the index value of downstream feedback channel group according to formula two;

Concrete, when processing module 210 comprises the orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of self determining, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Mode three, downstream feedback channel resource configuration information comprise the index value of the running time-frequency resource of downstream feedback channel group correspondence, and then processing module 210 need be determined the orthogonal sequence index value according to formula three;

Concrete, when processing module 210 comprises the index value of running time-frequency resource of downstream feedback channel group correspondence in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining, receive and detect corresponding downlink feedback information.

Mode four, downstream feedback channel resource configuration information comprise that the index value of downstream feedback channel group and orthogonal sequence index value place downstream feedback channel resource configuration information, then processing module 210 does not need to determine any index value, only needs to receive and detect according to the index value of receiving;

Concrete, when processing module 210 comprises the index value of downstream feedback channel group and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, according to the index value of the downstream feedback channel group of receiving and the mapping ruler between downstream feedback channel group and the time frequency unit, determine the running time-frequency resource position of corresponding downstream feedback channel group, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Mode five, downstream feedback channel resource configuration information comprise the index value and the orthogonal sequence index value of the running time-frequency resource of downstream feedback channel group correspondence, then processing module 210 does not need to determine any index value, only needs to receive and detect according to the index value of receiving;

Concrete, when processing module 210 comprises the index value of running time-frequency resource of downstream feedback channel group correspondence and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Mode six, downstream feedback channel resource configuration information comprise the index value of the Resource Unit that downlink feedback information shines upon, perhaps the index value of the Resource Unit that downlink feedback information shone upon (or resource unit group) and the index value of sequence spreading have two kinds of processing modes according to base station send mode different disposal module 210.

When one, base station symbol that downlink feedback information modulation is formed directly is mapped in one or repeating mapping and sends on a plurality of Resource Units,

Accordingly, processing module 210 just can receive and detect downlink feedback information behind the index value of receiving the Resource Unit that downlink feedback information shines upon.

Two, the spread spectrum operation is carried out with the symbol of downlink feedback information modulation formation in the base station, and the sequence behind the spread spectrum is mapped to transmission again on a plurality of Resource Units or the resource unit group

Accordingly, processing module 210 needs to receive and detect downlink feedback information according to the index value and the frequency expansion sequence index value of Resource Unit that downlink feedback information shone upon that receives or resource unit group.

The embodiment of the invention is not limited to above-mentioned dual mode, and any mode that downlink feedback information can be handled and sent all is applicable to does not invent.

As shown in Figure 8, the method for embodiment of the invention reception downlink feedback information comprises the following steps:

Step 801, basis are the corresponding downstream feedback channel resource that trunking distributes, and determine the downstream feedback channel resource configuration information of trunking correspondence.

Step 802, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking, be used to indicate trunking, receive downlink feedback information at the downstream feedback channel of correspondence according to the downstream feedback channel resource configuration information of receiving.

Can further include after the step 802:

Step 803, trunking are according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

Wherein, the downstream feedback channel resource configuration information of trunking correspondence comprises a kind of in the following message:

The index value of the downstream feedback channel group of trunking correspondence;

The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence;

The index value of the running time-frequency resource of the downstream feedback channel group mapping of trunking correspondence;

The index value of the downstream feedback channel group of trunking correspondence and the trunking orthogonal sequence index value in the downstream feedback channel group of correspondence;

The orthogonal sequence index value of trunking correspondence in the index value of the running time-frequency resource of the downstream feedback channel group mapping of trunking correspondence and the downstream feedback channel group;

Wherein, the downstream feedback channel group of trunking correspondence is the downstream feedback channel group under the downstream feedback channel of trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group.

In the step 803, trunking can be determined the running time-frequency resource position of downstream feedback channel group according to the index value of the running time-frequency resource of the index value of downstream feedback channel group or the mapping of downstream feedback channel group, thereby can monitor the downstream feedback channel, and receive downlink feedback information.

Owing to need in the step 802 a sign indicating number sub-sequence with all downlink feedback information correspondences of the downstream feedback channel group correspondence back that superposes to send, so in the step 803, trunking need extract the downlink feedback information of self correspondence according to orthogonal spreading sequence from the downlink feedback information of receiving.

The quantity of downstream feedback channel group is determined according to the quantity of trunking in the macrocell in the base station in the step 801, specifically can determine the quantity of downstream feedback channel group according to formula four.

Then, again according to the type of CP (conventional CP or expansion CP), determine the quantity of the downstream feedback channel in each downstream feedback channel group, the quantity of having determined the downstream feedback channel in each downstream feedback channel group has also just been determined the orthogonal sequence index value in each downstream feedback channel group.

Quantity such as the downstream feedback channel in each downstream feedback channel group is 8, and then the orthogonal sequence index value is 0～7.

In the step 801, can further determine the index value of the running time-frequency resource of downstream feedback channel group mapping according to the index of downstream feedback channel group and the mapping ruler between downstream feedback channel group and the running time-frequency resource.

In specific implementation process, can select index value with the downstream feedback channel group of trunking correspondence

The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence

Place downstream feedback channel resource configuration information with in the index value of the running time-frequency resource of the downstream feedback channel group of trunking correspondence mapping one or more.

Index value difference in the downstream feedback channel resource configuration information, the processing of trunking also can be different, describe respectively below.

If in mode one step 801, the index value of downstream feedback channel group is placed downstream feedback channel resource configuration information, then in the step 803, trunking need be determined the orthogonal sequence index values according to formula three;

Concrete, when trunking comprises the index value of downstream feedback channel group in the downstream feedback channel resource configuration information of receiving, according to the index value of downstream feedback channel group and the mapping ruler between downstream feedback channel group and the time frequency unit.Determine the running time-frequency resource position of corresponding downstream feedback channel group, receive and detect corresponding downlink feedback information according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining.

Each element in the formula three:

The resource indication territory of the descending control information format 0 of the relaying down control channel by the base station obtains; n _DMRSThe circulation in DMRS territory skew mapping obtains in the descending control information format 0 of the relaying down control channel by the base station;

With

Dispose by high level.

If in mode two steps 801, the orthogonal sequence index value is placed downstream feedback channel resource configuration information, then in the step 803, trunking need be determined the index value of downstream feedback channel group according to formula two;

Concrete, when trunking comprises the orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of self determining, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Each element in the formula two: The resource indication territory of the descending control information format 0 of the relaying down control channel by the base station obtains; n _DMRSThe circulation in DMRS territory skew mapping obtains in the descending control information format 0 of the relaying down control channel by the base station;

Dispose by high level; I _PHICHDetermine according to frame structure configuration and subframe numbering.

If in mode three steps 801, the index value of the running time-frequency resource of downstream feedback channel group correspondence is placed downstream feedback channel resource configuration information, then in the step 803, trunking need be determined the orthogonal sequence index values according to formula three;

Concrete, when trunking comprises the index value of running time-frequency resource of downstream feedback channel group correspondence in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining, receive and detect corresponding downlink feedback information.

If in mode four steps 801, the index value and the orthogonal sequence index value of downstream feedback channel group are placed downstream feedback channel resource configuration information, then in the step 803, do not need to determine any index value, only need to receive and detect according to the index value of receiving;

Concrete, when trunking comprises the index value of downstream feedback channel group and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, according to the index value of the downstream feedback channel group of receiving and the mapping ruler between downstream feedback channel group and the time frequency unit.Determine the running time-frequency resource position of corresponding downstream feedback channel group,, receive and detect corresponding downlink feedback information according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving.

If in mode five steps 801, the index value and the orthogonal sequence index value of the running time-frequency resource of downstream feedback channel group correspondence are placed downstream feedback channel resource configuration information, then in the step 803, trunking does not need to determine any index value, only needs to receive and detect according to the index value of receiving;

Concrete, when trunking comprises the index value of running time-frequency resource of downstream feedback channel group correspondence and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

Wherein, mode four is compared mode one～three with mode five, does not need trunking to determine any index value, so can reduce the burden and the amount of calculation of trunking.

If the quantity of the data flow that trunking sends during the upstream multi-antenna transmission is a plurality of (m is greater than 1), can in a downstream feedback channel, carry the downlink feedback information of a plurality of data flow correspondences, network side need be reserved m resource doubly and give the downstream feedback channel when configuration, quantity such as data flow is 5, and the resource that then needs to reserve 5 times is given the downstream feedback channel.

A kind of preferable mode is in the step 802, m the corresponding downlink feedback information of stream carried out combined coding and/or high order modulation, the number of identical downstream feedback channel group when forming with m=1, that is to say the resource that equates when taking with m=1, this is not need to reserve m resource doubly to give the downstream feedback channel, thereby has saved resource.

Concrete, when a trunking sends a plurality of data flow in the upstream multi-antenna transmission, after the downlink feedback information of a plurality of data flow correspondences of each trunking carried out combined coding and/or high order modulation, send processing, information mapping after the transmission processing on the running time-frequency resource of the feedback resources group correspondence of trunking correspondence, is sent to trunking.

That is to say that upstream multi-antenna when transmission trunking sends a plurality of data flow, the quantity of the downstream feedback channel group the when quantity of the downstream feedback channel group that relaying down control channel comprises sends individual traffic with trunking is identical.

Wherein, if step 802 is carried out combined coding, then send processing and comprise: the combined coding sequence is carried out repeated encoding, modulation, modulation symbol is carried out spread spectrum, scrambling and overlap-add procedure, be mapped on the running time-frequency resource then.If descending employing multi-antenna transmitting is defeated, also to carry out layering and pre-encode operation between scrambling and the stack, be mapped to after the stack on the running time-frequency resource of antenna port.

It is when if step 802 is carried out high order modulation or carried out combined coding and high order modulation simultaneously, identical when then sending processing and not carrying out combined coding and/or high order modulation.

If step 802 is not carried out combined coding and/or high order modulation, then processing procedure can be referring to Fig. 2 B, wherein, if descending employing multi-antenna transmitting is defeated, also to carry out layering and pre-encode operation between scrambling and the stack, be mapped to after the stack on the running time-frequency resource of antenna port.

In the specific implementation, downstream feedback channel resource configuration information can be placed the RRC signaling in the step 802, send to corresponding trunking.

Need to prove that the embodiment of the invention is not limited to the RRC signaling, any mode that downstream feedback channel resource configuration information can be sent to trunking all is to use the embodiment of the invention.

If the resource location of relaying down control channel did not change in a period of time, then the resource at this section downstream feedback channel occupancy of trunking correspondence in the time is identical.

Further, in the step 802, when the resource location of relaying down control channel changes, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking.

As shown in Figure 6A, when the resource that configurating downlink feedback channel group takies, the running time-frequency resource that the downstream feedback channel group of trunking correspondence is shone upon can be distributed at least one OFDM symbol in time domain, and be not more than the relaying down control channel at the OFDM symbol quantity that time domain takies, specifically be distributed on what OFDM symbols and can set as required.

If the relaying down control channel distributes a plurality of continuous PRB at frequency domain, need downlink feedback information in the step 802 to each downstream feedback channel group, carry out operations such as repeated encoding, modulation, quadrature spread, scrambling, stack (under the defeated situation of descending multi-antenna transmitting, also to pass through operations such as layering, precoding between scrambling and the stack), and distribute on the bandwidth on unappropriated three REG (being 1/3rd bandwidth that are spaced apart between per two REG) being mapped in equably on the frequency domain, specifically can be referring to Fig. 6 B;

If the relaying down control channel distributes a plurality of discrete PRB at frequency domain, then need from logic a plurality of PRB being connected into continuous PRB resource.Need in the step 802 downlink feedback information of each down control channel group is carried out operations such as repeated encoding, modulation, quadrature spread, scrambling, stack (under the defeated situation of descending multi-antenna transmitting, scrambling and stack also will be passed through operations such as layering, precoding), and be mapped on unappropriated three REG, specifically can be referring to Fig. 6 C.

Just for example, the REG quantity that can take as required is not limited to 3 for Fig. 6 B and Fig. 6 C.That is to say that the running time-frequency resource of the downstream feedback channel group mapping of trunking correspondence is on the unappropriated REG of at least one in the frequency band of relaying down control channel of frequency domain distribution, specifically taking what REG can set as required.

In specific implementation process, if the down control channel of each trunking takies exclusive Physical Resource Block, and exclusive physical resource number of blocks is identical, and then the downlink feedback information of each trunking correspondence is mapped at least one Resource Unit or resource unit group of exclusive Physical Resource Block of this trunking correspondence.Correspondingly, downstream feedback channel resource configuration information content changes.

In the step 802, when sending the downlink feedback information of downstream feedback channel group correspondence, if the modulation symbol that downlink feedback information modulation back is formed maps directly to one or repeating mapping to a plurality of Resource Units, then downstream feedback channel resource configuration information comprises the Resource Unit index value of downlink feedback information correspondence;

If the modulation symbol that downlink feedback information modulation back is formed carries out the spread spectrum operation, and the sequence behind the spread spectrum is mapped on a plurality of Resource Units or the resource unit group, then downstream feedback channel resource configuration information comprises the Resource Unit of downlink feedback information correspondence or the index value of resource unit group, and the index value of frequency expansion sequence.

The downstream feedback channel resource configuration information of determining is sent to trunking.

The embodiment of the invention is not limited to above-mentioned dual mode, and any mode that downlink feedback information is handled and sent all is suitable for the embodiment of the invention.

Accordingly, in the step 803, trunking is received downstream feedback channel resource configuration information, determine the Resource Unit or the resource unit group index value of downlink feedback information correspondence, if downlink feedback information carries out sending behind the spread spectrum, also will determine the frequency expansion sequence index value, trunking just can receive and detect corresponding downlink feedback information according to resource location of determining and sequence index.

If adopt downlink feedback information to carry out operations such as repeated encoding, modulation, quadrature spread, scrambling, stack, mapping (under the defeated situation of descending multi-antenna transmitting in the step 802 with each down control channel group, scrambling and the stack between also to pass through operations such as layering, precoding) after again the transmission, then in the step 803, trunking need be determined the orthogonal sequence index values according to formula three, and the downlink feedback information of self correspondence in the downlink feedback information of determining to receive according to the orthogonal sequence index value.

Preferable, the orthogonal sequence index value can also be placed downstream feedback channel resource configuration information in the step 801, in the step 803, trunking can oneself be determined the orthogonal sequence index value, has reduced the amount of calculation of trunking like this.

When being configured, Resource Unit that the downlink feedback information of different trunking correspondences takies in relaying down control channel dedicated resources piece or resource unit group quantity can be identical with the position.

Specifically as shown in Figure 7, the downlink feedback information of each trunking correspondence takies several fixedly RE or REG in dedicated resources; Accordingly, by downstream feedback channel resource configuration information, trunking is just known the resource location of corresponding downstream feedback channel occupancy.

From the foregoing description as can be seen: the embodiment of the invention is determined the downstream feedback channel resource configuration information of trunking correspondence according to the corresponding downstream feedback channel resource for trunking distribution; The downstream feedback channel resource configuration information of determining is sent to corresponding trunking, be used to indicate trunking, at the downstream feedback channel reception downlink feedback information of correspondence according to the downstream feedback channel resource configuration information of receiving.

Owing to downstream feedback channel resource configuration information can be notified to corresponding trunking, thereby can make trunking accurately find corresponding downstream feedback channel and receive downlink feedback information, reduce trunking and determined the complexity of downstream feedback channel resource, improved the efficient of trunking.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (27)

1. a method that receives downlink feedback information is characterized in that, this method comprises:

According to the corresponding downstream feedback channel resource that distributes for trunking, determine the downstream feedback channel resource configuration information of trunking correspondence;

The downstream feedback channel resource configuration information of described trunking correspondence comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

The downstream feedback channel resource configuration information of determining is sent to corresponding trunking, be used to indicate described trunking, at the downstream feedback channel reception downlink feedback information of correspondence according to the downstream feedback channel resource configuration information of receiving.

2. the method for claim 1 is characterized in that, determines that according to following formula the quantity of the downstream feedback channel group that a relaying down control channel comprises is:

Wherein, N _GroupBe the quantity of the downstream feedback channel group that comprises of a relaying down control channel; The quantity of the data flow of trunking transmission when m is the upstream multi-antenna transmission; N is the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group; M, n and N are positive integers.

3. the method for claim 1, it is characterized in that, the running time-frequency resource of the downstream feedback channel group mapping of described trunking correspondence is distributed at least one orthogonal frequency division multiplex OFDM symbol in time domain, and is not more than the OFDM symbol quantity that described relaying down control channel takies in time domain.

4. the method for claim 1 is characterized in that,

The running time-frequency resource of the downstream feedback channel group mapping of described trunking correspondence is on the unappropriated resource unit group REG of at least one in the frequency band of described relaying down control channel of frequency domain distribution.

5. the method for claim 1 is characterized in that, describedly the downstream feedback channel resource configuration information of determining is sent to corresponding trunking comprises:

The downstream feedback channel resource configuration information of determining is placed the radio resource control RRC signaling, send to corresponding trunking.

6. method as claimed in claim 3 is characterized in that, if the resource location of described relaying down control channel did not change in a period of time, then the resource at this section downstream feedback channel occupancy of trunking correspondence in the time is identical.

7. method as claimed in claim 6 is characterized in that, describedly also comprises before the downstream feedback channel resource configuration information of determining is sent to corresponding trunking:

The resource location of determining described relaying down control channel changes.

8. the method for claim 1 is characterized in that, describedly also comprises after the downstream feedback channel resource configuration information of determining is sent to corresponding trunking:

When described trunking comprises the index value of downstream feedback channel group in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group to receive and detect corresponding downlink feedback information according to the index value of described downstream feedback channel group according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining;

When described trunking comprises the orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of self determining, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information;

When described trunking comprises the index value of running time-frequency resource of downstream feedback channel group correspondence in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining, receive and detect corresponding downlink feedback information;

When described trunking comprises the index value of downstream feedback channel group and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information;

When described trunking comprises the index value of running time-frequency resource of downstream feedback channel group correspondence and orthogonal sequence index value in the downstream feedback channel resource configuration information of receiving, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

9. the method for claim 1 is characterized in that, a trunking sends a plurality of data flow during the upstream multi-antenna transmission;

Describedly the downstream feedback channel resource configuration information of determining sent to corresponding trunking comprise:

After the downlink feedback information of a plurality of data flow correspondences of each trunking carried out combined coding and/or high order modulation, send processing;

Information mapping after the transmission processing on the running time-frequency resource of the feedback resources group correspondence of trunking correspondence, is sent to trunking.

10. method as claimed in claim 9 is characterized in that,

Upstream multi-antenna when transmission trunking sends a plurality of data flow, and the quantity of the downstream feedback channel group the when quantity of the downstream feedback channel group that relaying down control channel comprises sends individual traffic with trunking is identical.

11. the method for claim 1, it is characterized in that, the quantity of the exclusive Physical Resource Block of the down control channel correspondence of each trunking is identical, and the downlink feedback information of each trunking correspondence is mapped at least one Resource Unit of exclusive Physical Resource Block of this trunking correspondence;

Described downstream feedback channel resource configuration information comprises:

The index value of the Resource Unit that downlink feedback information shone upon of trunking correspondence.

12. method as claimed in claim 11 is characterized in that,

The Resource Unit quantity that the downlink feedback information of different trunking correspondences takies in the dedicated resources piece is identical with the position.

13. a system that receives downlink feedback information is characterized in that this system comprises

The base station is used for determining the downstream feedback channel resource configuration information of trunking correspondence according to the corresponding downstream feedback channel resource for the trunking distribution, and the downstream feedback channel resource configuration information of determining is sent to corresponding trunking; The downstream feedback channel resource configuration information of described trunking correspondence comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

Trunking is used for according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

14. system as claimed in claim 13 is characterized in that, described base station determines that according to following formula the quantity of the downstream feedback channel group that a relaying down control channel comprises is:

Wherein, N _GroupBe the quantity of the downstream feedback channel group that comprises of a relaying down control channel; The quantity of the data flow of trunking transmission when m is the upstream multi-antenna transmission; N is the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group; M, n and N are positive integers.

15. system as claimed in claim 13 is characterized in that, described base station also is used for:

The downstream feedback channel resource configuration information of determining is placed the radio resource control RRC signaling, send to corresponding trunking.

16., it is characterized in that described base station also is used for as claim 13 or 15 described systems:

When the resource location of determining described relaying down control channel changes, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking.

17. system as claimed in claim 13 is characterized in that, described trunking is used for:

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of downstream feedback channel group, determine the running time-frequency resource position of corresponding downstream feedback channel group to receive and detect corresponding downlink feedback information according to the index value of described downstream feedback channel group according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining;

When in the downstream feedback channel resource configuration information of receiving, comprising the orthogonal sequence index value, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of self determining, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information;

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of running time-frequency resource of downstream feedback channel group correspondence, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining, receive and detect corresponding downlink feedback information;

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of downstream feedback channel group and orthogonal sequence index value, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information;

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of running time-frequency resource of downstream feedback channel group correspondence and orthogonal sequence index value, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

18. system as claimed in claim 13 is characterized in that, described base station also is used for:

When a trunking sends a plurality of data flow in the upstream multi-antenna transmission, after the downlink feedback information of a plurality of data flow correspondences of each trunking carried out combined coding and/or high order modulation, send processing, information mapping after the transmission processing on the running time-frequency resource of the feedback resources group correspondence of trunking correspondence, is sent to trunking.

19. system as claimed in claim 13, it is characterized in that, the quantity of the exclusive Physical Resource Block of the down control channel correspondence of each trunking is identical, and the downlink feedback information of each trunking correspondence is mapped at least one Resource Unit of exclusive Physical Resource Block of this trunking correspondence;

Described base station also is used for:

The index value of the Resource Unit that downlink feedback information shone upon of trunking correspondence is placed described downstream feedback channel resource configuration information.

20. a base station is characterized in that, this base station comprises:

The information determination module is used for determining the downstream feedback channel resource configuration information of trunking correspondence according to the corresponding downstream feedback channel resource for the trunking distribution; The downstream feedback channel resource configuration information of described trunking correspondence comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

Sending module, the downstream feedback channel resource configuration information that is used for determining sends to corresponding trunking, is used to indicate described trunking according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

21. base station as claimed in claim 20 is characterized in that, described information determination module determines that according to following formula the quantity of the downstream feedback channel group that a relaying down control channel comprises is:

Wherein, N _GroupBe the quantity of the downstream feedback channel group that comprises of a relaying down control channel; The quantity of the data flow of trunking transmission when m is the upstream multi-antenna transmission; N is the maximum quantity of orthogonal spreading sequence available in the downstream feedback channel group; M, n and N are positive integers.

22. base station as claimed in claim 20 is characterized in that, described sending module also is used for:

The downstream feedback channel resource configuration information of determining is placed the radio resource control RRC signaling, send to corresponding trunking.

23., it is characterized in that described sending module also is used for as claim 20 or 22 described base stations:

When the resource location of determining described relaying down control channel changes, the downstream feedback channel resource configuration information of determining is sent to corresponding trunking.

24. base station as claimed in claim 20 is characterized in that, described sending module also is used for:

When a trunking sends a plurality of data flow in the upstream multi-antenna transmission, after the downlink feedback information of a plurality of data flow correspondences of each trunking carried out combined coding and/or high order modulation, send processing, information mapping after the transmission processing on the running time-frequency resource of the feedback resources group correspondence of trunking correspondence, is sent to trunking.

25. base station as claimed in claim 20, it is characterized in that, the quantity of the exclusive Physical Resource Block of the down control channel correspondence of each trunking is identical, and the downlink feedback information of each trunking correspondence is mapped at least one Resource Unit of exclusive Physical Resource Block of this trunking correspondence;

Described information determination module also is used for:

The index value of the Resource Unit that downlink feedback information shone upon of trunking correspondence is placed described downstream feedback channel resource configuration information.

26. a trunking is characterized in that, this trunking comprises:

Receiver module is used to receive the downstream feedback channel resource configuration information from the base station, and wherein said downstream feedback channel resource configuration information is that the base station is determined according to the corresponding downstream feedback channel resource that distributes for trunking; Described downstream feedback channel resource configuration information comprises a kind of in the following message: the index value of the downstream feedback channel group of trunking correspondence; The orthogonal sequence index value of trunking in the downstream feedback channel group of correspondence; The index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence; The index value of the downstream feedback channel group of trunking correspondence and the described trunking orthogonal sequence index value in the downstream feedback channel group of correspondence; The orthogonal sequence index value of trunking correspondence described in the index value of the running time-frequency resource of the described downstream feedback channel group mapping of trunking correspondence and the described downstream feedback channel group; Wherein, the downstream feedback channel group of described trunking correspondence is the downstream feedback channel group under the downstream feedback channel of described trunking correspondence, and the index value of downstream feedback channel group is not more than the quantity of the downstream feedback channel group that a relaying down control channel comprises; The orthogonal sequence index value is not more than the maximum quantity of orthogonal spreading sequence available in the described downstream feedback channel group;

Processing module is used for according to the downstream feedback channel resource configuration information of receiving, at the downstream feedback channel reception downlink feedback information of correspondence.

27. trunking as claimed in claim 26 is characterized in that, described processing module is used for:

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of downstream feedback channel group, determine the running time-frequency resource position of corresponding downstream feedback channel group to receive and detect corresponding downlink feedback information according to the index value of described downstream feedback channel group according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining;

When in the downstream feedback channel resource configuration information of receiving, comprising the orthogonal sequence index value, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of self determining, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information;

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of running time-frequency resource of downstream feedback channel group correspondence, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of self determining, receive and detect corresponding downlink feedback information;

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of downstream feedback channel group and orthogonal sequence index value, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the downstream feedback channel group of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information;

When in the downstream feedback channel resource configuration information of receiving, comprising the index value of running time-frequency resource of downstream feedback channel group correspondence and orthogonal sequence index value, determine the running time-frequency resource position of corresponding downstream feedback channel group according to the index value of the running time-frequency resource of receiving, according to the running time-frequency resource position of the downstream feedback channel group of determining and the orthogonal sequence index value of receiving, receive and detect corresponding downlink feedback information.

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