CN102891715A

CN102891715A - Method and system for processing return link subframe

Info

Publication number: CN102891715A
Application number: CN2011102085316A
Authority: CN
Inventors: 杨瑾; 毕峰; 梁枫; 袁明; 吴栓栓
Original assignee: ZTE Corp
Current assignee: Yancheng Hengyuan Investment Development Co.,Ltd.
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2013-01-23
Anticipated expiration: 2031-07-22
Also published as: CN102891715B

Abstract

The invention discloses a method and a system for processing a return link subframe. According to the method and the system, a network side can supplement the configuration of the return link subframe and begins to use or stops using the indication for supplementing the return link subframe through one or more signaling in sub-information of a signaling indication relay station; according to the signaling, the relay station begins to use the configured supplement return link subframe and the network side transmission information or stops using the configured supplement return link subframe. According to the technology for processing the return link subframe, the flexibility and adaptability of the return link source configuration can be effectively improved, backward compatibility with an LTE (Long Term Evolution) system can be realized and the problem of changing the configuration of the return link subframe can be solved.

Description

A kind of processing method of back haul link subframe and system

Technical field

The present invention relates to the communications field, be specifically related to a kind of processing method and system of back haul link subframe.

Background technology

Introducing relay station (Relay Node, RN) in the network, as shown in Figure 1, evolved base station (eNB) and macrocell user (Macro User Equipment, M-UE) link between is called the link that direct transfers (Direct Link), link between eNB and RN is called back haul link (Backhaul Link) or repeated link, be also referred to as the Un interface, RN and relay domain user (Relay User Equipment, R-UE) link between is called access link (Access Link), the home base station (Donor eNB, DeNB) that on back haul link, provides the base station of service to be called this relay station for relay station.

In adopting band during relaying (inband-relay), when to be back haul link with access link use identical frequency resource, owing to the inband-relay launching opportunity is disturbed the receiver generation of self, so back haul link can't be simultaneously in identical frequency resource emission or reception with access link.At time division duplex (Time Division Duplexing, TDD) in the system, the problems referred to above are by using different up/down row subframes to solve dividing with time division way between back haul link and the access link, be that network side is the up/down row subframe that the back haul link indication is used for back haul link, be common back haul link sub-frame configuration (Un UL/DL Sub-config), on the up/down row subframe of back haul link, RN no longer provides the business datum service for R-UE, and carries out transfer of data with eNB.

In LTE (Long Term Evolution, Long Term Evolution) system, 1 10ms radio frames (Radio frame) is made of the subframe subframe of 10 1ms, as shown in Figure 2.The TDD system is provided with 7 kinds of different TDD up/down row sub-frame configuration (TDD UL/DL Config) for satisfying the heterogeneous networks demand, and is as shown in table 1, and wherein " D " represents descending sub frame, and " U " represents sub-frame of uplink, and " S " represents special subframe.Special subframe is divided into three parts in time, comprises descending time slot (DwPTS, Downlink Pilot Time Slot), protection interval (GP, Guard Period), ascending time slot (UpPTS, Uplink Pilot Time Slot); Wherein, DwPTS is used for the downlink information transmission, and UpPTS is used for the uplink information transmission, and GP is the guard time interval between the up/down row.

Table 1, LTE TDD up/down row sub-frame configuration

In the TDD system, because #0, #1, #5, #6 subframe need be carried broadcast message, synchronizing signal etc. and can not be configured to MBSFN subframe (Multicast Broadcast Single Frequency Network, Multicast Broadcast Single Frequency Network), namely available MBSFN subframe mostly is 6 subframe subframe most in 1 radio frames, be subframe #2, #3, #4, #7, #8, #9 subframe.At present at LTE-A (Long Term Evolution Advanced, senior Long Term Evolution) available Un descending sub frame is MBSFN subframe in the system, the concrete configuration mode of Un subframe is: MCE (MBMS Control Entity, the multimedia control entity) at first determines available MBSFN subframe, network side is the available downlink subframes in return link (Un DL subframe) of configuration in these available MBSFN subframe again, and selects corresponding back haul link up/down row sub-frame configuration (Un UL/DL Sub-config) indication RN.

Sub-frame configuration according to LTE TDD system, corresponding Un UL/DL Sub-config is as shown in table 2 under different TDD UL/DL config, wherein, be configured to Un UL subframe in corresponding subframe position mark " U " expression, mark " D " expression is configured to Un DL subframe, and DL:UL ratio represents the Un DL/UL subframe ratio that disposes.Concrete TDD UL/DL Config and Un UL/DL Sub-config that network side adopts high-level signaling indication RN to use.

Table 2, TDD back haul link up/down row sub-frame configuration

Because Un DL subframe must be the subframe in the set of MBSFN subframe, be to have 4 subframes can not be used as Un DL subframe in each radio frames, cause the utilization in time of Backhaul resource both insufficient also dumb, disabled Un DL subframe forms the time cavity (time hole) in the Un transmission.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of processing method and system of back haul link subframe, further provides flexibly fully resource for Backhaul Link.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of processing method of back haul link subframe, the method comprises:

One or more by in the following information of signaling indication RN of network side: replenish back haul link sub-frame configuration Extra Un SubframeConfiguration, bring into use the indication of described additional back haul link subframe Extra Un Subframe, stop using the indication of described additional back haul link subframe;

Relay station is brought into use the additional back haul link subframe and the network side transmission information that dispose according to described signaling, or stops using the additional back haul link subframe that disposes.

When network side carried out described indication by signaling, this signaling was high-level signaling or physical layer signaling.

When network side carries out described indication by signaling, described signaling comprises replenishing the indication of back haul link subframe, this is designated as and replenishes back haul link sub-frame configuration index Extra Un SubframeConfigurationTDDindex, can be determined the additional back haul link up/down row subframe that disposes by described additional back haul link sub-frame configuration index.

Described additional back haul link sub-frame configuration comprises definite additional back haul link up/down row subframe for pre-seting configuration;

The described additional back haul link sub-frame configuration that pre-sets is by system's predefine, or indicates to relay station by relay station initial configuration message.

When network side was brought into use described additional back haul link subframe by signaling indication relay station, relay station used the additional back haul link subframe and the network side that dispose to carry out the transmission of back haul link up/down row.

When network side is brought into use described additional back haul link subframe by signaling indication relay station, comprise in this signaling and use the effective time of replenishing the back haul link subframe, be used for when end this effective time, the control relay station is stopped using described additional back haul link subframe.

When network side was stopped using described additional back haul link subframe by signaling indication relay station, relay station was stopped using the additional back haul link subframe that disposes.

When network side begins by signaling indication relay station or stops using described additional back haul link subframe, indicate beginning or stop using described additional back haul link subframe with the binary condition of 1bit.

When network side adopted described high-level signaling indication relay station, described high-level signaling was that relay station is reshuffled signaling RNReconfiguration message;

When network side adopted described physical layer signaling indication relay station, described physical layer signaling was included in the descending control indication of back haul link Physical Downlink Control Channel R-PDCCH.

When described network side is indicated the described additional back haul link sub-frame configuration index of relay station by signaling, adopt the bitsmap of X bits to indicate described additional back haul link sub-frame configuration index, or the binary condition of Ybits is indicated described additional back haul link sub-frame configuration index; X=N wherein, Y=ceil (log2 (N)), N are the sum of all available additional back haul link sub-frame configuration index in the system.

When described additional back haul link subframe is the interior subframe of band, comprise descending sub frame #0, #5, #6, and special subframe #1, any one among the DwPTS among the #6 or a plurality of and corresponding sub-frame of uplink; The structure of the common back haul link subframe of current use is identical in the structure of described additional back haul link subframe and the system;

Described additional back haul link subframe is band during outer subframe, comprises any one or a plurality of descending sub frame and/or special subframe #1 in the radio frames, the DwPTS among the #6, and corresponding sub-frame of uplink; The structure of the access link subframe of current use in the structure of described additional back haul link subframe and the system, or the structure of the link subframe that direct transfers, or the structure of common back haul link subframe is identical.

Back haul link uses TDD uplink-downlink configuration #0, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #0, relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #0, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #1, and relay station uses as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #0, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #2, and relay station uses as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #3, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #4, and relay station uses as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #5, and relay station uses as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #6, relay station uses as a supplement downlink subframes in return link of subframe #0, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #7, relay station uses as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #8, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #9, and relay station uses as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #10, and relay station uses as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #11, relay station uses as a supplement downlink subframes in return link of subframe #0, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #12, relay station uses as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #13, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #14, and relay station uses as a supplement downlink subframes in return link of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #15, and relay station uses as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #16, relay station uses as a supplement downlink subframes in return link of subframe #5, #6, #7, #8, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #17, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #18, and relay station uses as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #19, relay station uses as a supplement downlink subframes in return link of subframe #4, #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #5, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #20, and relay station uses as a supplement downlink subframes in return link of subframe #8, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #5, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #21, and relay station uses as a supplement downlink subframes in return link of subframe #8, #9, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #22, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #8 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #23, and relay station uses as a supplement back haul link special subframe of subframe #6, and subframe #3 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #24, and relay station uses as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #25, relay station uses as a supplement downlink subframes in return link of subframe #9, subframe #6 is the back haul link special subframe as a supplement, and subframe #2, #3, #4 be the back haul link sub-frame of uplink as a supplement.

Back haul link uses TDD uplink-downlink configuration #0, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #19, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #0, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #20, and relay station uses as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #21, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #22, and relay station uses as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #23, relay station uses as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #24, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #25, relay station uses as a supplement downlink subframes in return link of subframe #0, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #26, relay station uses as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #27, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #28, and relay station uses as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #29, and relay station uses as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #5, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #30, and relay station uses as a supplement downlink subframes in return link of subframe #8, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, and described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #31, and relay station uses as a supplement back haul link special subframe of subframe #1, and subframe #8 is the back haul link sub-frame of uplink as a supplement.

Back haul link uses TDD uplink-downlink configuration #1, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #21, relay station uses as a supplement downlink subframes in return link of subframe #4, subframe #1 is the back haul link special subframe as a supplement, and subframe #7, #8 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #22, relay station uses as a supplement downlink subframes in return link of subframe #4, subframe #1, #6 be the back haul link special subframe as a supplement, and subframe #7, #8 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #23, relay station uses as a supplement downlink subframes in return link of subframe #5, #9, subframe #6 is the back haul link special subframe as a supplement, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #24, relay station uses as a supplement downlink subframes in return link of subframe #3, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #25, relay station uses as a supplement downlink subframes in return link of subframe #0, #3, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #26, relay station uses as a supplement downlink subframes in return link of subframe #5, #8, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #27, relay station uses as a supplement downlink subframes in return link of subframe #8, subframe #1 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #28, relay station uses as a supplement downlink subframes in return link of subframe #5, #6, #8, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #29, relay station uses as a supplement downlink subframes in return link of subframe #5, #6, #8, #9, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described network side indicates described relay station to use when replenishing back haul link sub-frame configuration #31, relay station uses as a supplement downlink subframes in return link of subframe #9, subframe #1 is the back haul link special subframe as a supplement, and subframe #4, #8 be the back haul link sub-frame of uplink as a supplement.

A kind for the treatment of system of back haul link subframe, this system comprise replenishes back haul link subframe indicating member, additional back haul link subframe control unit; Wherein,

Described additional back haul link subframe indicating member, be used for replenishing the one or more of the following information of back haul link subframe control unit by the signaling indication: replenish the back haul link sub-frame configuration, bring into use the indication of described additional back haul link subframe, stop using the indication of described additional back haul link subframe;

Described additional back haul link subframe control unit is used for according to described signaling, brings into use the additional back haul link subframe and the network side transmission information that dispose, or stops using the additional back haul link subframe that disposes.

When carrying out described indication by signaling, described signaling is high-level signaling or physical layer signaling.

When carrying out described indication by signaling, described signaling comprises replenishing the indication of back haul link subframe, this is designated as and replenishes back haul link sub-frame configuration index, and described additional back haul link sub-frame configuration index is used for determining the additional back haul link up/down row subframe of configuration.

When bringing into use described additional back haul link subframe by the signaling indication, described additional back haul link subframe control unit is used for using the additional back haul link subframe and the network side that dispose to carry out the transmission of back haul link up/down row.

When bringing into use described additional back haul link subframe by the signaling indication, comprise in this signaling and use the effective time of replenishing the back haul link subframe, be used for when end this effective time, controlling described additional back haul link subframe control unit and stopping using described additional back haul link subframe.

When stopping using described additional back haul link subframe by the signaling indication, described additional back haul link subframe control unit is used for stopping using the additional back haul link subframe that disposes.

When beginning by the signaling indication or stopping using described additional back haul link subframe, described additional back haul link subframe indicating member is used for the binary condition indication beginning of 1bit or stops using described additional back haul link subframe.

When adopting described high-level signaling indication, described high-level signaling is that relay station is reshuffled signaling;

When adopting described physical layer signaling indication, described physical layer signaling is included in the descending control indication of back haul link Physical Downlink Control Channel.

Described when indicating described additional back haul link sub-frame configuration index by signaling, described additional back haul link subframe indicating member is used for adopting the bitsmap of X bits to indicate described additional back haul link sub-frame configuration index, or the binary condition of Y bits is indicated described additional back haul link sub-frame configuration index; X=N wherein, Y=ceil (log2 (N)), N are the sum of all available additional back haul link sub-frame configuration index in the system.

Back haul link uses TDD uplink-downlink configuration #0, described indication shows to be used when replenishing back haul link sub-frame configuration #0, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #0, described indication shows to be used when replenishing back haul link sub-frame configuration #1, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #0, described indication shows to be used when replenishing back haul link sub-frame configuration #2, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #3, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #4, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #5, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #6, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #0, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #7, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #8, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #9, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #10, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #11, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #0, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #12, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #13, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #14, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #15, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #16, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, #7, #8, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described indication shows to be used when replenishing back haul link sub-frame configuration #17, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described indication shows to be used when replenishing back haul link sub-frame configuration #18, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described indication shows to be used when replenishing back haul link sub-frame configuration #19, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #4, #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #5, described indication shows to be used when replenishing back haul link sub-frame configuration #20, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #8, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #5, described indication shows to be used when replenishing back haul link sub-frame configuration #21, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #8, #9, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described indication shows to be used when replenishing back haul link sub-frame configuration #22, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #8 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described indication shows to be used when replenishing back haul link sub-frame configuration #23, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #6, and subframe #3 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described indication shows to be used when replenishing back haul link sub-frame configuration #24, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described indication shows to be used when replenishing back haul link sub-frame configuration #25, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #9, subframe #6 is the back haul link special subframe as a supplement, and subframe #2, #3, #4 be the back haul link sub-frame of uplink as a supplement.

Back haul link uses TDD uplink-downlink configuration #0, described indication shows to be used when replenishing back haul link sub-frame configuration #19, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #0, described indication shows to be used when replenishing back haul link sub-frame configuration #20, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #21, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #22, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, #6, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #23, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #24, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #25, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #0, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #26, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #27, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #28, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described indication shows to be used when replenishing back haul link sub-frame configuration #29, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #5, described indication shows to be used when replenishing back haul link sub-frame configuration #30, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #8, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described indication shows to be used when replenishing back haul link sub-frame configuration #31, described additional back haul link subframe control unit is used for using as a supplement back haul link special subframe of subframe #1, and subframe #8 is the back haul link sub-frame of uplink as a supplement.

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #21, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #4, subframe #1 is the back haul link special subframe as a supplement, and subframe #7, #8 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #22, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #4, subframe #1, #6 be the back haul link special subframe as a supplement, and subframe #7, #8 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #1, described indication shows to be used when replenishing back haul link sub-frame configuration #23, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #9, subframe #6 is the back haul link special subframe as a supplement, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #24, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #3, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #25, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #0, #3, subframe #1 is the back haul link special subframe as a supplement, and subframe #7 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #2, described indication shows to be used when replenishing back haul link sub-frame configuration #26, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #8, subframe #6 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #27, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #8, subframe #1 is the back haul link special subframe as a supplement, and subframe #2 is the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #3, described indication shows to be used when replenishing back haul link sub-frame configuration #28, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, #8, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #4, described indication shows to be used when replenishing back haul link sub-frame configuration #29, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #5, #6, #8, #9, and subframe #2, #3 be the back haul link sub-frame of uplink as a supplement;

Back haul link uses TDD uplink-downlink configuration #6, described indication shows to be used when replenishing back haul link sub-frame configuration #31, described additional back haul link subframe control unit is used for using as a supplement downlink subframes in return link of subframe #9, subframe #1 is the back haul link special subframe as a supplement, and subframe #4, #8 be the back haul link sub-frame of uplink as a supplement.

Described additional back haul link subframe indicating member is arranged at network side, and described additional back haul link subframe control unit is arranged in the relay station.

Described network side comprises one or more in the following entity: base station, via node, cell cooperative entity MCE, gateway GW, mobility management apparatus MME, Evolved UTRAN EUTRAN, operational administrative and safeguard the OAM manager.

Back haul link subframe treatment technology of the present invention, flexibility and adaptability that can the resource distribution of Effective Raise back haul link realize backwards compatibility (compatible LTE system) and solve the problem of change back haul link sub-frame configuration.

Description of drawings

Fig. 1 is for introducing the schematic network structure of relay station;

Fig. 2 is the system frame structure schematic diagram;

Fig. 3 is the back haul link subframe handling principle figure of the embodiment of the invention one;

Fig. 4 is the back haul link subframe handling principle figure of the embodiment of the invention two;

Fig. 5 is the back haul link subframe handling principle figure of the embodiment of the invention three;

Fig. 6 is the back haul link subframe handling principle figure of the embodiment of the invention four;

Fig. 7 is the back haul link subframe handling process sketch of the embodiment of the invention;

Fig. 8 is the back haul link subframe treatment system figure of the embodiment of the invention.

Embodiment

In actual applications, for flexibility and the adaptability that improves the back haul link resource distribution, realize backwards compatibility (compatible LTE system) and solve the problem of change back haul link sub-frame configuration, can be by one or more by in the following information of signaling indication relay station of network side: replenish the back haul link sub-frame configuration, bring into use the indication of described additional back haul link subframe, stop using the indication of described additional back haul link subframe; Relay station then can be brought into use the additional back haul link subframe and the network side transmission information that dispose according to corresponding indication, or stops using the additional back haul link subframe that disposes.Network side can carry out above-mentioned signaling indication to relay station by high-level signaling or physical layer signaling.

Described additional back haul link subframe is indicated by signaling by network side, or the fixed configurations of putting for systemic presupposition.

When network side was brought into use described additional back haul link subframe by signaling indication relay station, relay station used the additional back haul link subframe and the network side that dispose to carry out the transmission of back haul link up/down row.When network side was stopped using described additional back haul link subframe by signaling indication relay station, relay station was stopped using the additional back haul link subframe that disposes.When network side begins by signaling indication relay station or stops using described additional back haul link subframe, indicate beginning or stop using described additional back haul link subframe with the binary condition of 1bit.

Need to prove, when network side is brought into use by signaling indication relay station or is stopped using additional back haul link subframe, comprise in the described signal deployment replenishing the indication of back haul link subframe, the additional back haul link up/down row subframe that network side disposes by replenishing back haul link sub-frame configuration index (Extra Un SubframeConfigurationTDD index) indication relay station.

Described additional back haul link subframe is when pre-seting fixed configurations, comprises definite additional back haul link up/down row subframe, by system's predefine, or indicates to relay station by relay station initial configuration message.

Particularly, described additional back haul link subframe comprises descending sub frame #0 in the band during subframe, #5, #6, and any one or a plurality of and corresponding sub-frame of uplink among the special subframe DwPTS; The structure of the common back haul link subframe of current use is identical in the structure of described additional back haul link subframe and the system.Described common back haul link subframe is that system passes through the corresponding back haul link up/down of the back haul link sub-frame configuration index row subframe that configuration parameter TDD sub-frame configuration pattern (subframeConfigPatternTDD) is the relay station indication.

Described additional back haul link subframe is band during outer subframe, comprises the DwPTS in any one or a plurality of descending sub frame and/or the special subframe in the radio frames, and corresponding sub-frame of uplink; The structure of the access link subframe of current use in the structure of described additional back haul link subframe and the system, or the structure of the link subframe that direct transfers, or the structure of common back haul link subframe is identical.

When network side adopted high-level signaling indication relay station, described high-level signaling was that relay station is reshuffled signaling (RNReconfiguration message); When network side adopted physical layer signaling indication relay station, described physical layer signaling was included in the descending control indication (DCI) of back haul link Physical Downlink Control Channel (R-PDCCH).

When additional back haul link subframe is indicated by network side, indicate to comprise in the signaling of described additional back haul link subframe and use the effective time of replenishing the back haul link subframe; Relay station brings into use the corresponding back haul link subframe of replenishing to carry out the transmission of back haul link up/down row according to described indication, and when end the effective time of disposing, stops using described additional back haul link subframe.

During additional back haul link subframe that described network side disposes by high-level signaling or physical layer signaling indication relay station, can adopt the described additional back haul link subframe of bit mapping (bitsmap) indication of X bits, or the binary condition of Y bits is indicated described additional back haul link subframe; X=N wherein, Y=ceil (log2 (N)), N are the sum of all available additional back haul link sub-frame configuration index in the system.Particularly, network side can be in high-level signaling or physical layer signaling represents that with the binary condition of 1bit relay station begins and stops using and replenish the back haul link subframe.

In actual applications, above-mentioned network side as one of executive agent, can comprise in the following entity one or more: base station (as: eNB), via node (as: RN), cell cooperative entity (MCE, Multi-cell/multicast Coordination Entity), gateway (GW, Gateway), mobility management apparatus (MME, Mobility Management Entity), Evolved UTRAN (EUTRAN, Evolved Universal Terrestrial Radio Access Network), operational administrative and safeguard (OAM, Operation Administration and Maintenance) manager.The below describes as an example of eNB example.

ENB is that relay station disposes corresponding back haul link subframe (comprising back haul link up/down row subframe) according to the resource requirement of back haul link, is used for the up/down row transfer of data of back haul link.Because the variation of back haul link data volume, operable common back haul link subframe possibly can't satisfy the Un demand data in the LTE-A system, so eNB indication RN further uses additional back haul link subframe (Extra Un Subframe) to be used for the Un transfer of data.When the Un demand data reduced, eNB can indicate RN to stop using Extra Un Subframe, releasing resource.Wherein, the Extra Un Subframe of RN use can be configured and indicate to RN according to the Un demand data by eNB; Also can be put by systemic presupposition the predefined fixed configurations of the system that is, or when the RN initialization, indicated to RN by eNB, the additional back haul link up/down row subframe that pre-sets with indication.

For the situation that Extra Un Subframe is put by systemic presupposition, eNB only needs to indicate RN to bring into use Extra Un Subframe, and RN namely brings into use the Extra Un Subframe that pre-sets to carry out the back haul link transfer of data.

Extra Un Subframe for the indication of eNB signal deployment, can indicate RN to bring into use in the indication signaling of Extra Un Subframe at eNB indicates together to RN, in indication signaling, the additional back haul link up/down row subframe that eNB disposes by Extra Un SubframeConfigurationTDD index indication relay station.System definition Extra Un Subframe allocation list, every kind of corresponding call number Index of Extra Un Subframe configuration, then eNB only needs to indicate this call number to RN, i.e. and expression indication RN uses corresponding Extra Un Subframe.The example of an Extra Un Subframe allocation list is as shown in table 3, and wherein, the subframe that is labeled as D represents to be configured to Un DL subframe, and the subframe that is labeled as U represents to be configured to Un UL subframe, and the subframe that is labeled as S represents to be configured to the Un special subframe.When special subframe #1, #6 were configured to the Un special subframe, expression DwPTS wherein partly was used for the back haul link downlink transfer, and/or UpPTS partly is used for the back haul link uplink.

Table 3

According to table 3 example illustrated, be the cycle to the 10ms that is configured to that replenishes the back haul link subframe, namely in every 10ms radio frames level, the additional back haul link subframe that RN can use is consistent, reuses take 10ms as the cycle.In addition, replenish the back haul link subframe and also can be configured to other cycle, such as 40ms, 80ms or 160ms etc., table 4 provides the example in a 40ms cycle.

For the Extra Un Subframe of eNB indication, also can continue in the existing Un sub-frame configuration table of system shown in the table 2 increases other configurations, and the back haul link sub-frame configuration is as shown in table 5 as a supplement.ENB indicates the additional back haul link subframe that disposes by the configuration of the relay station subframe configuration information element (RN-SubframeConfig information element) among high-level signaling RNReconfiguration message indication SubframeConfigurationTDD to RN.For former back haul link sub-frame configuration (as shown in table 2), effective indicating range of SubframeConfigurationTDD is [0,18], and the span of SubframeConfigurationTDD is [0,31], then take table 5 as example, eNB can be increased in the table 2 replenishing the back haul link subframe, uses the corresponding indicated value of the untapped SubframeConfigurationTDD of former back haul link subframe (i.e. any one in [19-31] or a plurality of indicated value) indication to replenish the back haul link sub-frame configuration.This moment, eNB reached additional back haul link subframe simultaneously effectively to the former back haul link subframe of RN configuration, and namely RN uses former back haul link subframe and additional back haul link subframe and eNB to communicate according to the indication of eNB simultaneously.

Table 5

With respect to table 5, former back haul link subframe and additional back haul link subframe are corresponded respectively to different SubframeConfigurationTDD indicated values, can there be simultaneously former back haul link subframe in RN and replenishes the back haul link sub-frame configuration, and use corresponding subframe according to the indication of eNB.As shown in table 6, also can adopt the mode that is superimposed on former back haul link sub-frame configuration to the indication that replenishes the back haul link subframe, indicate to RN.In the existing Un sub-frame configuration table of system shown in the table 2, continue to increase other configurations, with back haul link sub-frame configuration as a supplement, eNB indicates the back haul link subframe that disposes by the indication of the RN-SubframeConfig information element among high-level signaling RNReconfiguration message SubframeConfigurationTDD to RN.

Take table 6 as example, eNB uses the corresponding indicated value of the untapped SubframeConfigurationTDD of former back haul link subframe (i.e. any one in [19-31] or a plurality of indicated value) indication to replenish the back haul link sub-frame configuration, this moment, eNB was invalid to the former back haul link subframe of RN configuration, RN stops using former back haul link subframe, only uses additional back haul link sub-frame configuration and eNB to communicate according to the indication of eNB.

Table 6

According to the frequency domain resource at Extra Un Subframe place, can further Extra Un Subframe be divided into two classes: in the band/the outer backhaul subframe (inband/outband Extra Un Subframe) of replenishing of band.Described inband refers to: eNB uses the band resource identical with Access Link with RN in the transmission of back haul link; Inband Extra Un Subframe refers to: use the band resource identical with Access Link to carry out the back haul link transmission at the Extra Un Subframe that disposes.Outband refers to: eNB uses the band resource different with Access Link from RN in the transmission of back haul link; Outband Extra Un Subframe refers to: use the band resource different from Access Link to carry out the back haul link transmission at the Extra Un Subframe that disposes.The Extra Un Subframe that RN uses is inband or outband Extra Un Subframe, by network side indication RN, or by the implicit indication of concrete configuration the/predefined Extra Un Subframe.

For inband Extra Un Subframe, descending sub frame #0, #5, #6, and special subframe #1, any one among the DwPTS of #6 or a plurality ofly can be configured to DL Extra Un Subframe; For outband Extra Un Subframe, any one in the radio frames or a plurality of descending sub frame can be configured to DL Extra Un Subframe.Each Extra Un Subframe configuration is lower, sequential relationship between descending sub frame and the corresponding sub-frame of uplink thereof can be according to the sequential relationship between ascending resource mandate indication and the uplink, or the sequential relationship between downlink transfer and the uplink feedback is determined the Un up/down row subframe that perhaps comprises in each Extra Un Subframe configuration of definition in Extra Un Subframe allocation list.

Under Un UL/DL Sub-config, the up/down row subframe that is used for the back haul link transmission between RN and the eNB is as shown in table 2.Because RN needs to keep the control information of Access Link is transmitted at common downlink subframes in return link, therefore need to observe certain back haul link subframe structure at common downlink subframes in return link, for example, on the first two OFDM (OFDM) symbol of downlink subframes in return link, carry out the control information transmission to Access Link, through RN send out/receipts state conversion after, receive the signal of eNB from the 3rd OFDM sign-on.When inband Extra Un Subframe is used in the RN configuration, RN is at the upper necessary back haul link subframe structure identical with presently used common back haul link that keep of the additional downlink subframes in return link that disposes (Extra Un DL Subframe), to keep the service to Access Link.When outband Extra Un Subframe is used in the RN configuration, owing to use different band resources from Access link, RN on the Extra Un DL Subframe that disposes, can adopt with system in the structure of presently used access link subframe, or the structure of the link subframe that direct transfers, or the identical subframe structure of the structure of common back haul link subframe.

When eNB indication RN begins/stops using Extra Un Subframe, can be by high-level signaling or physical layer signaling indication RN, and can be by twice signaling indication (be respectively and bring into use and the withdraw from service indication signaling) notice, also can be by a signaling indication RN, control RN by the effective storage life of indicating the Extra Un Subframe that disposes and begin/stop using Extra Un Subframe, namely in this signaling, comprise the indication of Extra Un Subframe being used effective time.Within the time period of indication, RN can use Extra Un Subframe; When arrived in the effective time of disposing, RN stopped using Extra Un Subframe.RN begins/stops using corresponding Extra Un Subframe according to the indication of eNB, carries out the back haul link transfer of data with eNB on corresponding Extra Un DL/UL subframe.

When the predefined fixedly sub-frame configuration of system during as Extra Un Subframe, eNB only need indicate RN to begin/stop using Extra Un Subframe.Further, eNB indicates respectively RN to bring into use by twice signaling and when stopping using Extra Un Subframe, and this indication signaling begins with the corresponding indication of the binary condition RN of 1bit in high-level signaling or physical layer signaling and stops using and replenish the back haul link subframe.

When eNB disposes indication Extra Un Subframe according to the back haul link demand, concrete configuration is indicated to RN by high-level signaling or physical layer signaling by eNB to the Extra Un Subframe of RN, and the Extra Un Subframe that disposes comprises Un DL and/or UL subframe.Further, eNB adopts the bitsmap information indication Extra Un Subframe of X bits, or adopts the binary status information indication Extra Un Subframe of Y bits; X=N wherein, Y=ceil (log2 (N)), ceil represents the computing that rounds up, log2 represents that take 2 logarithm operations the end of as N is the sum of all available additional back haul link sub-frame configuration index in the system.ENB indication RN begins/stops using to carry simultaneously above-mentioned specific configuration information to Extra Un Subframe in the signaling of Extra Un Subframe, the configuration information signaling of the signaling that perhaps begins/stop using Extra Un Subframe and concrete Extra Un Subframe respectively at different signaling message indicatings to RN, perhaps in the indication signaling of stopping using Extra Un Subframe, do not comprise the configuration information indication to concrete Extra Un Subframe.

ENB adopts high-level signaling indication RN to begin/stop using Extra Un Subframe and/or the specific configuration information of Extra Un Subframe is indicated, and adopts RNReconfiguration message to indicate to RN.Further, to the specific configuration information indication of Extra Un Subframe, namely Extra Un SubframeConfigurationTDD index information is included among the relay station subframe configuration information element RN-SubframeConfig information element.

ENB adopts physical layer signaling indication RN to begin/stop using Extra Un Subframe and/or the specific configuration information of Extra Un Subframe is indicated, and adopts R-PDCCH to indicate to RN.Wherein, above-mentioned indication information is included among the DCI.

Further specify technical scheme of the present invention below in conjunction with accompanying drawing and specific embodiment.

Example one

In the process of RN initialization access network, eNB is the Extra Un Subframe of the indicating predetermined justice of RN, indicates Extra Un SubframeConfigurationTDD index by high-level signaling RNReconfiguration message to RN.Current macrocell uses TDD UL/DL Config 2, eNB indication RN Un SubframeConfigurationTDD index=8, according to table 3, namely dispose subframe #1 for replenishing back haul link special subframe Extra Un S subframe, wherein, the DwPTS of #1 partly is used for the Un downlink transfer, and subframe #7 is for replenishing back haul link sub-frame of uplink (Extra Un UL subframe).

When the back haul link data volume increases, when configuration can not be satisfied demand data to the common back haul link subframe of RN, eNB brought into use Extra Un Subframe by physical layer signaling indication RN.ENB by the 1bit indicating bit among the DCI, brings into use Extra Un Subframe to the RN indication in R-PDCCH.RN in the downlink transfer that subframe #1 receives eNB, carries out uplink to eNB according to indication on subframe #7.When the back haul link data volume reduced, eNB indication RN stopped using Extra Un Subframe, stops using Extra Un Subframe by the 1bit indicating bit among the DCI to the RN indication in R-PDCCH.Wherein, 0/1 state of the 1bit indicating bit among the DCI correspond respectively to begin/stop or stopping/bringing into use Extra Un Subframe.

Example two

Macrocell uses TDD UL/DL Config 3, systemic presupposition put Extra Un Subframe be subframe #6 as Extra Un DL subframe, subframe #2 is as Extra Un UL subframe.

When the back haul link data volume increases, when configuration can not be satisfied demand data to the common back haul link subframe of RN, eNB brought into use Extra Un Subframe by high-level signaling indication RN; High-level signaling indicates RN to use the effective time of predefined Extra Un Subframe simultaneously.ENB brings into use Extra Un Subframe by RNReconfiguration message to RN indication, and indication effective time is 500ms.RN uses the Extra Un subframe that pre-sets according to indication, in the downlink transfer that subframe #6 receives eNB, carries out uplink to eNB on subframe #2.When the time of using Extra Un subframe reached 500ms, RN stopped using Extra Un subframe.

Example three

ENB is according to the back haul link demand, and Real-Time Scheduling configuration indication RN uses Extra Un subframe.When the increase of back haul link data volume, eNB brings into use Extra Un Subframe by high-level signaling RNReconfiguration message to the RN indication, and the Extra Un SubframeConfigurationTDD index of indication concrete configuration.Current macrocell uses TDD UL/DL Config 4, eNB replenishes back haul link subframe configuration information element (RN-Extra-SubframeConfig information element) the indication Un SubframeConfigurationTDD index that RN was disposed with relay station in RNReconfiguration message, further, indicate the Un SubframeConfigurationTDD index=18 that disposes by Y bits, wherein, Y=ceil (log2 (N)), N is the sum of all available additional back haul link sub-frame configuration index in the system, as an example of table example 3, N=26, then Y=5.According to table 3, namely disposing subframe #5, #6 is Extra Un DL subframe, and subframe #2 is Extra Un UL subframe.RN in the downlink transfer that subframe #5, #6 receive eNB, carries out uplink to eNB according to indication on subframe #2.

Because the Extra Un subframe that disposes is inband subframe, be that RN uses the band resource identical with Access Link to transmit at Extra Un subframe and eNB, therefore need to use the structure identical with current common back haul link subframe.The common back haul link subframe of eNB configuration RN is SubframeConfigurationTDD Index=15, and as shown in table 2, namely subframe #8, #9 are Un DL subframe, and subframe #3 is Un UL subframe.On current common downlink subframes in return link, RN carries out control information transmission to Access Link on the first two OFDM of subframe symbol, through send out/conversion of receipts state after, from the signal of the 3rd OFDM sign-on reception eNB.Then RN same the first two OFDM symbol that uses on Extra Un DL subframe#5, #6 carries out the control information transmission to Access Link, through send out/conversion of receipts state after, from the signal of the 3rd OFDM sign-on reception eNB.On current common back haul link sub-frame of uplink, RN only launches front 13 SC-FDMA symbols of subframe, in the subframe remaining time as receive/send out and send out/receive change-over time, then RN equally only launches front 13 SC-FDMA symbols of subframe on Extra Un UL subframe#2.

When the back haul link demand data reduced, eNB stopped using Extra Un Subframe by high-level signaling RNReconfiguration message indication RN, and RN stops using the Extra Un Subframe that disposes, releasing resource according to indication.

Example four

ENB is according to the back haul link demand, and Real-Time Scheduling configuration indication RN uses Extra Un subframe.When the back haul link data volume increases, eNB brings into use Extra Un Subframe by high-level signaling RNReconfiguration message to the RN indication, and effective storage life 200ms, and the Extra Un subframe that disposes to RN indication by the DCI among the physical layer signaling R-PDCCH.

Current macrocell uses TDD UL/DL Config 1, and the common back haul link subframe of eNB configuration RN is SubframeConfigurationTDD Index=3, and as shown in table 2, namely subframe #4, #9 are Un DL subframe, and subframe #3 is Un UL subframe.For TDD UL/DL Config 1, take table 3 as example, available Extra Un subframe has 5 kinds, and then in DCI, eNB indicates the Extra Un subframe that disposes, wherein X=5 by the bitmap of X bit to RN.The Extra Un subframe that eNB disposes at the DCI indicating, be expressed as " 10000 ", then expression configuration RN uses Extra Un subframeConfigurationTDD index=3, and namely first available Extra Un subframe disposes among the TDD UL/DL Config 1.RN in the downlink transfer that subframe #1 receives eNB, carries out uplink to eNB according to indication on subframe #7.When the time of using Extra Un subframe reached 200ms, RN stopped using Extra Un subframe.

Because the Extra Un subframe that disposes is outband subframe, be that RN uses the band resource different from Access Link to transmit at Extra Un subframe and eNB, RN adopts the subframe structure identical with the access link subframe of current use in the system at the Extra Un DL Subframe that disposes.RN keeps complete subframe structure at Extra Un DL subframe#1, receives the signal of eNB at 14 OFDM symbols.RN keeps complete subframe structure at Extra Un UL subframe#7, at 14 SC-FDMA symbols to the eNB transmit uplink signal.

Example five

When eNB indicates Extra Un subframe by high-level signaling to RN, concrete, indicate to RN by RN-Extra-SubframeConfig information element.Preferably, the Extra Un SubframeConfigurationTDD index that is disposed with the subframeConfigPatternTDD indication.

Preferably, RN-Extra-SubframeConfig information element can be carried among the RNReconfiguration message, also can be independently as message m essage or information element (information element, IE) issues to RN.The upper-layer protocol source language that issues is as follows:

Example six

Increase 1bit is used to indicate and begins/stop using Extra Un subframe in RNReconfiguration message, preferably, this indicating bit called after TDD replenishes the back haul link sub-frame configuration and enables indication (Extra-subframeConfig-EnableTDD); Represent to bring into use Extra Un subframe when 1bits is " 1 ", represents to stop using Extra Un subframe during for " 0 ", vice versa.

Preferably, " Extra-subframeConfig-EnableTDD " also can be carried in the relay station subframe configuration information element (RN--SubframeConfig information element), or independent of " message " or " information element ", or in the LTE/LTE-A system, increase the described signaling that enables in any descending control indication form (DCI format).

In conjunction with the various embodiments described above as can be known, the operation thinking that the present invention processes the back haul link subframe can represent flow process as shown in Figure 7, and this flow process may further comprise the steps:

Step 710: one or more by in the following information of signaling indication relay station of network side: replenish the back haul link sub-frame configuration, bring into use the indication of described additional back haul link subframe, stop using the indication of described additional back haul link subframe.

Step 720: relay station is brought into use the additional back haul link subframe and the network side transmission information that dispose according to described signaling, or stops using the additional back haul link subframe that disposes.

In order to guarantee that the various embodiments described above and operation thinking can realize smoothly, can carry out setting as shown in Figure 8.Referring to Fig. 8, Fig. 8 is the back haul link subframe treatment system figure of the embodiment of the invention, and this system comprises continuous additional back haul link subframe indicating member, replenishes back haul link subframe control unit.Described additional back haul link subframe indicating member can be arranged at network side, and described additional back haul link subframe control unit then can be arranged in the relay station.

When practical application, replenish back haul link subframe indicating member and can replenish one or more in the following information of back haul link subframe control unit by the signaling indication: replenish the back haul link sub-frame configuration, bring into use the indication of described additional back haul link subframe, stop using the indication of described additional back haul link subframe.Replenish back haul link subframe control unit and then can bring into use the additional back haul link subframe and the network side transmission information that dispose according to described signaling, or stop using the additional back haul link subframe that disposes.

In sum as seen, no matter be method or system, back haul link subframe treatment technology of the present invention, flexibility and adaptability that can the resource distribution of Effective Raise back haul link realize backwards compatibility (compatible LTE system) and solve the problem of change back haul link sub-frame configuration.

The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.

Claims

1. the processing method of a back haul link subframe is characterized in that, the method comprises:

One or more by in the following information of signaling indication relay station RN of network side: replenish back haul link sub-frame configuration Extra Un SubframeConfiguration, bring into use the indication of described additional back haul link subframe Extra Un Subframe, stop using the indication of described additional back haul link subframe;

2. method according to claim 1 is characterized in that,

3. method according to claim 1 is characterized in that,

When network side carries out described indication by signaling, described signaling comprises replenishing the indication of back haul link subframe, this is designated as and replenishes back haul link sub-frame configuration index Extra Un SubframeConfigurationTDD index, can be determined the additional back haul link up/down row subframe that disposes by described additional back haul link sub-frame configuration index.

4. method according to claim 1 is characterized in that,

5. method according to claim 1 is characterized in that,

6. method according to claim 1 is characterized in that,

7. method according to claim 1 is characterized in that,

8. according to claim 5 or 7 described methods, it is characterized in that,

9. method according to claim 2 is characterized in that,

10. method according to claim 3 is characterized in that,

11. to 7 each described methods, it is characterized in that according to claim 1,

12. to 7 each described methods, it is characterized in that according to claim 1,

13. to 7 each described methods, it is characterized in that according to claim 1,

14. to 7 each described methods, it is characterized in that according to claim 1,

15. the treatment system of a back haul link subframe is characterized in that, this system comprises additional back haul link subframe indicating member, replenishes back haul link subframe control unit; Wherein,

16. system according to claim 15 is characterized in that,

17. system according to claim 15 is characterized in that,

18. system according to claim 15 is characterized in that,

19. system according to claim 15 is characterized in that,

20. system according to claim 15 is characterized in that,

21. system according to claim 15 is characterized in that,

22. according to claim 19 or 21 described systems, it is characterized in that,

23. system according to claim 16 is characterized in that,

24. system according to claim 17 is characterized in that,

25. to 21 each described systems, it is characterized in that according to claim 15,

26. to 21 each described systems, it is characterized in that according to claim 15,

27. to 21 each described systems, it is characterized in that according to claim 15,

28. to 21 each described systems, it is characterized in that according to claim 15,

29. to 21 each described systems, it is characterized in that according to claim 15 described additional back haul link subframe indicating member is arranged at network side, described additional back haul link subframe control unit is arranged in the relay station.

30. system according to claim 29, it is characterized in that described network side comprises one or more in the following entity: base station, via node, cell cooperative entity MCE, gateway GW, mobility management apparatus MME, Evolved UTRAN EUTRAN, operational administrative and safeguard the OAM manager.