WO2012068974A1

WO2012068974A1 - Method and system for processing backhaul link ack/nack information

Info

Publication number: WO2012068974A1
Application number: PCT/CN2011/082493
Authority: WO
Inventors: 杨瑾; 毕峰; 吴栓栓; 袁明; 梁枫
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-22
Filing date: 2011-11-18
Publication date: 2012-05-31
Also published as: CN102480343B; CN102480343A

Abstract

Disclosed are a method and system for processing backhaul link ACK/NACK information. The method includes: determining by an RN a processing mode and a PUCCH format for sending backhaul link uplink ACK/NACK information to the network side according to the backhaul link information and/or configuration indication at the network side; configuring by the network side one or more Un PUCCH resources for a relay node according to the backhaul link information and/or the processing mode and/or PUCCH format of the backhaul link uplink ACK/NACK information; processing by the relay node the backhaul link uplink ACK/NACK information to be sent using the processing mode and the PUCCH format, and sending the processed backhaul link uplink ACK/NACK information to the network side using the configured Un PUCCH resources. The present invention achieves the effect of using the backhaul link to send ACK/NACK information.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and system for processing backhaul link acknowledgment/non-acknowledgment (ACK/NACK) information. BACKGROUND OF THE INVENTION Relay technology, as an emerging technology, has attracted more and more attention and is regarded as a key technology of the quasi-3rd generation/fourth generation (B3G/4G). Since future wireless communication or cellular systems require complete network coverage and support for higher rate transmission, this poses new challenges for wireless communication technologies. At the same time, the cost of system construction and maintenance is also more prominent. As the transmission rate and communication distance increase, the energy consumption problem of the battery becomes prominent, and the future wireless communication will adopt a higher frequency, and the resulting path loss attenuation is also more serious. Through the relay technology, the traditional single-hop link can be divided into multiple multi-hop links, and the shortening of the distance will greatly reduce the path loss, which will improve the transmission quality and expand the communication range, thereby providing users with faster and more. Excellent service. 1 is a schematic structural diagram of a relay network according to the related art. In a network that introduces a relay node (Relay Node, RN for short), as shown in FIG. 1, an evolved base station (eNB) and a macro cell user (Macro User Equipment, M) The link between the UE and the RN is called the direct link. The link between the eNB and the RN is called the backhaul link. It is also called the Un interface. The RN and the relay user equipment (Relay User Equipment, referred to as The link between R-UEs is called an Access Link. On the direct transmission link, the information that can be carried on the Physical Uplink Control Channel (PUCCH) of the M-UE is: Scheduling Request (SR), Hybrid Automatic Repeat Request (Hybrid) Automatic Repeat Request (abbreviated as HARQ) feedback information (that is, M-UE performs ACK/NACK feedback on the data reception situation of the eNB on the Physical Downlink Shared Channel (PDSCH)), and the channel quality report (including CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication). The M-UE processes and maps Uplink Control Information (UCI) information in the corresponding physical uplink control channel format according to the content of the uplink control information to be reported and the PUCCH transmission mode, and configures the uplink control information (UCI) information on the configured resources. For transmission, the PUCCH format includes: PUCCH format 1/1 a/lb, PUCCH format 2/2a/2b, PUCCH format 3. Among them, PUCCH format la/lb (including PUCCH format la/lb of channel selection mode) and PUCCH format 3 can be used For carrying ACK/NACK information, PUCCH format 2/2a/2b can be used to multiplex bearer ACK/NACK information in the case of simultaneously transmitting channel quality reports. In the Long-Term Evolution (LTE) Time Division Duplex (TDD) system, there are 7 different uplink and downlink subframe configurations for 10ms radio frames, respectively TDD uplink/downlink. Configure #0-6 ( TDD UL/DL Configuration #0-#6 ). The number and location of the upper and lower subframes and special subframes in each radio frame are different in different configurations, as shown in Table 1. Wherein, "D" represents a downlink subframe, "U" represents an uplink subframe, and "S" represents a special subframe. Table 1 Uplink-downlink configurations

Due to the asymmetry of the number of uplink and downlink subframes in the TDD system, ACK/NACK information for data transmission of multiple downlink subframes needs to be carried on one uplink subframe, as shown in Table 2. The ACK/NACK information fed back in the Uplink (UL) subframe #n corresponds to the downlink transmission in the downlink (Downlink, DL for short) subframe #nk, ke {k ₀ .... . . . Table 2 Downlink association set index K '. k ₀ , k,'"k _M _ _x } for TDD

UL-DL sub-frame n (Subframe n)

Configuration

0 1 2 3 4 5 6 7 8 9

0 - - 6 - 4 - - 6 - 4

1 - - 7, 6 4 - - - 7, 6 4 -

- 8, 7, 4, 6 - - - - 8, 7, - -

2 - 4, 6

- 7, 6, 11 6, 5 5, - - - - -

3 - 4

- 12, 8, 7, 11 6, 5, - - - - - -

4 - 4, 7

- 13, 12, 9, 8, 7, 5, - - - - - - -

5 - 4, 11, 6

6 - - 7 7 5 - - 7 7 - In Table 2, for an arbitrary f UL subframe _included:. , , υ , where Μ indicates the maximum number of ACK/NACK information that can be carried in this UL subframe, that is, the maximum number of downlink subframes corresponding to this UL subframe. The ACK/NACK information corresponding to each downlink subframe includes 1 or 2 bits, where each bit feedback information corresponds to one transport block (Transport Block, TB for short) of the DL subframe transmission, that is, corresponds to one codeword. Since the PUCCH format la/lb has limited carrying capacity for information, the processing of ACK/NACK information in the TDD system is divided into two modes: a Bundling mode and a Multiplexing mode.

The ACK/NACK bundling (binding) processing method is to perform an AND operation on the feedback information between the M items of ACK/NACK information, and obtain the ACK/NACK information sequence after bundling, and then use the PUCCH format. La/lb performs processing mapping. ACK/NACK multiplexing (multiplexing) processing means that the items corresponding to different DL sub-frames will be

The ACK/NACK information is respectively subjected to an AND operation in units of subframes, and is cascaded in DL subframe order to form a multiplexed ACK/NACK information sequence, and then processed and mapped using a channel selection PUCCH format lb. For the backhaul link, there are further multiple backhaul links and downlink subframe configuration Un UL/DL Sub-config under each TDD UL/DL Config, as shown in Table 3-7. Table 3 shows the TDD UL. Un UL/DL Sub-config of /DL Config #1, Table 4 is Un UL/DL Sub-config for TDD UL/DL Config #2, and Table 5 is Un UL/DL for TDD UL/DL Config #3 Sub-config, Table 6 is the Un UL/DL Sub-config for TDD UL/DL Config #4, and Table 7 is the Un UL/DL Sub-config for TDD UL/DL Config #6. The downlink: The uplink ratio (DL: UL ratio) indicates the configured Un DL/UL subframe ratio, and the corresponding subframe position flag "U" indicates that the configuration is Un UL subframe, and the flag "D" indicates the configuration. Is an Un DL subframe. The network side uses the high-level signaling configuration to indicate the specific TDD UL/DL Config and Un UL/DL Sub-config used by the RN. Table 3 Un UL/DL Sub-config for TDD UL/DL Config #1

Table 4 Un UL/DL Sub-config for TDD UL/DL Config #2

Backhaul subframe DL: UL ratio Subframe number Configuration 0 1 2 3 4 5 6 7 8 9

0 1 : 1 U D

1 D U

2 2: 1 U D D

3 D U D

4 3: 1 u D D D

5 D u DD Table 5 Un UL/DL Sub-config for TDD UL/DL Config #3

Table 6 Un UL/DL Sub-config for TDD UL/DL Config #4

Table 7 Un UL/DL Sub-config for TDD UL/DL Config #6

The backhaul link subframe configuration is different from the direct transmission link, and the backhaul link has good link conditions, and more accurate feedback information can be adopted. At present, there is no specific processing method for the backhaul link ACK/NACK information in the TDD system. SUMMARY OF THE INVENTION The present invention provides a processing scheme for backhaul link ACK/NACK information, in which the related art does not have a specific processing method for backhaul link ACK/NACK information in a TDD system. According to an aspect of the present invention, a method for processing backhaul link ACK/NACK information is provided, including: the relay station RN determines to send a backhaul link uplink ACK to the network side according to the backhaul link information and/or the network side configuration indication. The processing mode of the NACK information and the PUCCH format of the physical uplink control channel format, where the backhaul link information includes at least one of the following: a backhaul link downlink/uplink subframe configuration ratio, a backhaul link subframe configuration, and a backhaul link downlink data transmission. Mode, the number of downlink subframes of the backhaul link corresponding to the maximum bearable ACK/NACK information on the uplink subframe of the backhaul link, the PUCCH transmission mode of the backhaul link, and the uplink subframe of the current backhaul link The backhaul link uplink control information content to be reported; the network side configures one or more backhaul link physical uplink control for the relay station according to the processing mode of the backhaul link information and/or the backhaul link uplink ACK/NACK information and/or the PUCCH format Channel Un PUCCH resource; The relay station processes the backhaul link uplink ACK/NACK information to be transmitted using the processing mode and the PUCCH format, and transmits the processed backhaul link uplink ACK/NACK information to the network side using the configured Un PUCCH resource. Preferably, the processing mode includes at least one of the following: a Bundling mode, a Multiplexing mode, and a cascading mode. Preferably, the Bundling mode is: the relay station performs logical AND operation on the backhaul link uplink ACK/NACK information corresponding to the M backhaul link downlink subframes to be transmitted, and forms a backhaul link uplink ACK after Bundling processing. /NACK information, where M is an integer greater than or equal to 1. Preferably, the uplink ACK/NACK information of the backhaul link after the Bundling process is 1 or 2 bits. Preferably, the relay station processes the uplink ACK/NACK information of the backhaul link to be sent in the Bundling mode, and determines that the PUCCH format is PUCCH format la or lb or PUCCH format la of the channel selection mode. Preferably, the relay station uses the Bundling mode to process the uplink ACK/NACK information of the backhaul link to be sent, and the channel quality indicator CQI and/or the precoding matrix indication PMI and/or the rank indication RI information need to be reported on the current backhaul uplink subframe. Then, it is determined that the PUCCH format is PUCCH format 2 or 2a or 2b. Preferably, the multiplexing mode is: the relay station performs logical AND operation on the ACK/NACK information of different codewords corresponding to the same subframe in the uplink ACK/NACK information of the backhaul link corresponding to the M backhaul link downlink subframes to be transmitted. And the information bits after the "AND" operation are sequentially connected in series in the order of the downlink subframe of the backhaul link to form the backhaul link uplink ACK/NACK information, wherein M is an integer greater than or equal to 1. Preferably, the ACK-processed backhaul link uplink ACK/NACK information is M bits. Preferably, the relay station processes the uplink ACK/NACK information of the backhaul link to be sent by using the multiplexing mode, and determines whether the PUCCH format is PUCCH format la or lb or the PUCCH format la or lb of the channel selection mode or PUCCH format 3. Preferably, the relay station uses the multiplexing mode to process the uplink ACK/NACK information of the backhaul link to be sent, and needs to report CQI and/or PMI and/or RI information on the current uplink subframe of the backhaul link, and then determines that the PUCCH format is PUCCH format. 2 or 2a or 2b. Preferably, the cascading mode is: the relay station sequentially connects the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be sequentially transmitted in the order of the downlink subframe of the backhaul link to form an L-bit cascading process. The backhaul link uplink ACK/NACK information, where M is an integer greater than or equal to 1, 1 ≤ J ≤ 2M. Preferably, if the relay station processes the backhaul link uplink ACK/NACK information to be transmitted in the cascading mode, it is determined that the PUCCH format is PUCCH format la or lb or PUCCH format la or lb of channel selection mode or PUCCH format 3. Preferably, the relay station can carry the backhaul link uplink ACK/NACK information corresponding to the M backhaul link downlink subframes on the current backhaul uplink subframe, where M is an integer greater than or equal to 1. Preferably, the PUCCH format includes at least one of the following: PUCCH format la or lb, PUCCH format 1 a or 1 b in channel selection mode, PUCCH format 2 or 2a or 2b, PUCCH format 3. Preferably, the network side configures the backhaul link physical uplink control channel Un PUCCH resource for the relay station. The network side configures, by the radio resource control RRC message, the n Un PUCCH resource indexes for the relay station, where n is an integer greater than or equal to 1. Preferably, the n PUCCH resources configured by the network side for the relay station are consecutive, or the network side is equally spaced between n Un PUCCH resources configured for the relay station, where n is an integer greater than or equal to 1. Preferably, the network side configures n PUCCH resources for the relay station, where n is determined by the network side according to the backhaul link downlink/uplink subframe configuration ratio Un DL/UL ratio and/or the backhaul link Un PUCCH transmission mode, where n is An integer greater than or equal to 1. Preferably, the network side comprises at least one of the following: a base station, a relay station, a cell coordination entity MCE, a gateway GW, a mobility management MME, an evolved universal terrestrial radio access network EUTRAN, an operation management and maintenance OAM manager. According to another aspect of the present invention, a processing system for backhaul link ACK/NACK information is provided, comprising: a relay station RN configured to determine to send a backhaul chain to a network side according to backhaul link information and/or a configuration indication on the network side The processing mode of the uplink ACK/NACK information and the physical uplink control channel format PUCCH format, where the backhaul link information includes at least one of the following: a backhaul link downlink/uplink subframe configuration ratio, a backhaul link subframe configuration, a backhaul chain The downlink data transmission mode, the number of downlink subframes of the backhaul link corresponding to the maximum ACK/NACK information that can be carried on the uplink subframe of the backhaul link, the PUCCH transmission mode of the backhaul link, and the backhaul to be reported on the uplink subframe of the current backhaul link Link uplink control information content; and processing the uplink ACK/NACK information of the backhaul link to be sent using the processing mode and the PUCCH format, using the Un configured on the network side The PUCCH resource sends the processed backhaul link uplink ACK/NACK information to the network side; the network side is configured to configure the relay station according to the processing mode of the backhaul link information and/or the backhaul link uplink ACK/NACK information and/or the PUCCH format. One or more backhaul links physical uplink control channel Un PUCCH resources. According to the present invention, the RN determines the processing mode of transmitting the uplink ACK/NACK information of the backhaul link and the PUCCH format, and the network side allocates the Un PUCCH resource to the relay station, and the RN processes the uplink ACK/NACK information according to the foregoing processing mode and the PUCCH format, and passes the The allocated Un PUCCH resource transmits ACK/NACK information, and solves the problem that the processing method of the backhaul link ACK/NACK information in the TDD system is not related in the related art, thereby achieving the effect of being able to transmit ACK/NACK information using the backhaul link. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a structure of a relay network according to the related art; FIG. 2 is a flowchart of a method for processing backhaul link ACK/NACK information according to an embodiment of the present invention; FIG. 3 is a diagram of a method according to an embodiment of the present invention. FIG. 4 is a schematic diagram of a multiplexing process mode process according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a process of a cascade mode process according to an embodiment of the present invention; FIG. 6 is a network side RN according to an embodiment of the present invention; FIG. 7 is a schematic diagram of n PUCCH resources configured by the network side for the RN in an equally spaced manner according to an embodiment of the present invention; FIG. 8 is a backhaul link according to an embodiment of the present invention. A block diagram of a processing system for ACK/NACK information. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Embodiment 1 The embodiment of the present invention provides a method for processing ACK/NACK information of a backhaul link, and FIG. 2 is a flowchart of a method for processing ACK/NACK information in a backhaul link according to an embodiment of the present invention. The method includes the following steps S202 to S204. Step S202: The relay station determines, according to the backhaul link information and/or the configuration indication on the network side, a processing mode of transmitting the uplink ACK/NACK information of the backhaul link and a physical uplink control channel format PUCCH format, where the backhaul link information includes the following At least one of: backhaul link downlink/uplink subframe configuration ratio (Un DL/UL ratio), backhaul link subframe configuration (Un UL/DL Sub-config), backhaul link downlink data transmission mode, backhaul link uplink The number of downlink subframes of the backhaul link corresponding to the maximum ACK/NACK information that can be carried on the subframe, the Un PUCCH transmission mode, the uplink control information content of the backhaul link to be reported on the uplink subframe of the current backhaul link; the network side according to the backhaul chain The processing mode of the uplink information and/or backhaul link uplink ACK/NACK information and/or the PUCCH format configures the corresponding one or more backhaul link physical uplink control channel (Un PUCCH) resources for the relay station. Step S204: The relay station processes the backhaul link uplink ACK/NACK information to be sent by using the processing mode and the PUCCH format, and sends the processed the network to the network side by using the configured Un PUCCH resource. The backhaul link uplink ACK/NACK information. Preferably, the relay station can carry the backhaul link uplink ACK/NACK information corresponding to the M backhaul link downlink subframes on the current backhaul uplink subframe, where M is an integer greater than or equal to 1. Preferably, the PUCCH format may include at least one of the following: PUCCH format la or lb, PUCCH format la or lb of channel selection mode, PUCCH format 2 or 2a or 2b, PUCCH format 3. The foregoing processing mode includes at least one of the following: a Bundling mode, a Multiplexing mode, and a cascading mode. The three modes are described separately below.

The Bundling mode is: The relay station performs logical AND operation on the backhaul link uplink ACK/NACK information corresponding to the M backhaul link downlink subframes to be transmitted, and forms a backhaul link uplink ACK/NACK after the binding process. Information, where M is an integer greater than or equal to 1. The uplink ACK/NACK information of the backhaul link after the binding process may be 1 or 2 bits. If the relay station adopts the Bundling mode to process the uplink ACK/NACK information of the backhaul link to be transmitted, the PUCCH format may adopt the PUCCH format la or lb or the PUCCH format la of the channel selection mode. If the relay station uses the Bundling mode to process the uplink ACK/NACK information of the backhaul link to be sent, and And, if the channel quality indicator CQI and/or the precoding matrix indication PMI and/or the rank indication RI information need to be reported on the current backhaul uplink subframe, the PUCCH format may adopt PUCCH format 2 or 2a or 2b.

The multiplexing mode is: the relay station logically ANDs the ACK/NACK information corresponding to different codewords of the same subframe in the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be transmitted, and The information bits after the "AND" operation are sequentially connected in series in the order of the downlink subframes of the backhaul link to form uplink ACK/NACK information of the backhaul link after multiplexing processing, where M is an integer greater than or equal to 1, after multiplexing processing The uplink ACK/NACK information of the backhaul link can be M bits. If the relay station uses the Multiplexing mode to process the uplink ACK/NACK information of the backhaul link to be transmitted, the PUCCH format may use PUCCH format la or lb, or PUCCH format la or lb of the channel selection mode, or use PUCCH format 3. If the relay station uses the multiplexing mode to process the uplink ACK/NACK information of the backhaul link to be sent, and the CQI and/or PMI and/or RI information needs to be reported on the uplink subframe of the current backhaul link, the PUCCH format may adopt the PUCCH format. 2 or 2a or 2b. The cascading mode is: the relay station sequentially connects the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be sequentially transmitted in the order of the downlink subframes of the backhaul link to form an L-bit cascaded backhaul link. Uplink ACK/NACK information, where M and L are integers greater than or equal to 1, and L ranges from 1 ≤ J ≤ 2M. If the relay station processes the uplink ACK/NACK information of the backhaul link to be transmitted in the cascading mode, the PUCCH format may use PUCCH format la or lb or PUCCH format la or lb of channel selection mode or PUCCH format 3. Preferably, the relay station determines, according to the configuration indication on the network side, the processing mode for transmitting the uplink ACK/NACK information of the backhaul link and the physical uplink control channel PUCCH formato by the network side according to one or more of the following factors: Un DL/UL ratio, Un UL/DL Sub-config, downlink data transmission mode of the backhaul link, the number of downlink subframes of the backhaul link corresponding to the maximum ACK/NACK information that can be carried on the uplink subframe of the backhaul link, Un PUCCH transmission mode, current backhaul chain The content of the uplink control information of the backhaul link to be reported on the uplink subframe of the path, and the configuration mode and the PUCCH format used by the RN to report the uplink ACK/NACK information on the backhaul link, and configure the corresponding Un PUCCH resource for the RN. The relay station processes the uplink ACK/NACK information of the backhaul link according to the foregoing configuration indication of the network side, and uses the indicated processing mode and the PUCCH format, and the bearer is reported to the network side on the configured Un PUCCH resource. Preferably, the relay station determines a processing mode for transmitting the uplink ACK/NACK information of the backhaul link and a physical uplink control channel PUCCH format according to the backhaul link information. The backhaul link information includes one or more of the following: Un

DL/UL ratio, Un UL/DL Sub-config, backhaul link downlink data transmission mode, backhaul link uplink subframe The number of downlink subframes of the backhaul link corresponding to the maximum ACK/NACK information, the Un PUCCH transmission mode, and the uplink control information of the backhaul link to be reported on the uplink subframe of the current backhaul link. Moreover, the network side configures the corresponding Un PUCCH resource for the RN. The relay station processes the backhaul link uplink ACK/NACK information according to the determined processing mode and the PUCCH format according to the backhaul link information, and reports the signal to the network side on the Un PUCCH resource configured on the network side. Preferably, the relay station determines a processing mode for transmitting the backlink uplink ACK/NACK information and a physical uplink control channel PUCCH format according to the backhaul link information and the configuration indication on the network side. The backhaul link information includes one or more of the following: Un DL/UL ratio, Un UL/DL Sub-config, backhaul link downlink data transmission mode, corresponding to the maximum bearable ACK/NACK information on the backhaul link uplink subframe The number of downlink subframes of the backhaul link M, the Un PUCCH transmission mode, and the content of the uplink control information of the backhaul link to be reported on the uplink subframe of the current backhaul link. The RN determines a processing mode and a PUCCH format used by the backhaul link uplink ACK/NACK information according to the backhaul link information and the configuration indication on the network side. The network side configures the corresponding Un PUCCH resource for the RN. The relay station processes the backlink uplink ACK/NACK information according to the determined processing mode and the PUCCH format, and the bearer is reported to the network side on the configured Un PUCCH resource. Preferably, the network side may configure n Un PUCCH resource indexes for the relay station by using a Radio Resource Control (RRC) message, where n is an integer greater than or equal to 1. Preferably, the n PUCCH resources configured by the network side for the relay station are consecutive, or the network side is equally spaced between n Un PUCCH resources configured for the relay station, where n is an integer greater than or equal to 1. Preferably, the network side configures n PUCCH resources for the relay station, where n is determined by the network side according to the backhaul link downlink/uplink subframe configuration ratio Un DL/UL ratio and/or the backhaul link Un PUCCH transmission mode, where n is An integer greater than or equal to 1. Preferably, the network side configures n Un PUCCH resource indexes for the RN, where n is determined by one or more of the following factors: Un DL/UL ratio Un UL/DL Sub-config, Un PUCCH transmission mode, ACK/NACK information Processing mode, PUCCH format. The network side may include at least one of the following: a base station (eg, e B), a relay station, a cell collaboration entity

MCE, Gateway (GW), Mobility Management (Mobile Management Entity, MME for short), Evolved Universal Mobile Telecommunication System Radio Access Network (EUTRAN), operation management and Operation Administration and Maintenance (OAM) Manager. The method for processing the uplink ACK/NACK information of the backhaul link in the TDD system according to the embodiment of the present invention can effectively report the uplink ACK/NACK information in the case of the asymmetric subframe configuration of the backhaul link, so as to fully utilize the backhaul link condition. , more accurate feedback ACK / NACK information effect. Embodiment 2 In the following application examples, the implementation process of the embodiment of the present invention is described by taking e B as a configuration control entity on the network side as an example. In the TDD system, the eNB indicates the Un UL/DL Sub-config used on the RN backhaul link and the downlink subframe configuration. Among them, Un UL/DL Sub-config can be divided into different lists according to different TDD UL/DL Config and numbered, that is, as shown in Table 3-7, Un UL/DL corresponding to all TDD UL/DL Config can also be used. Sub-config is arranged and numbered in a list, as shown in Table 8. In the above two modes, there is a different serial number correspondence relationship for the same Un UL/DL Sub-config, but the usage of the embodiment of the present invention is not affected. In the following embodiments, the first mode is taken as an example for description. That is, according to Table 3-7, different TDD UL/DL Config are divided into different lists and corresponding serial numbers. Table 8 Un UL/DL Sub-config

Correspondingly, when the RN uses the configured Un UL/DL Sub-config on the backhaul link, the ratio of the number of Un DL subframes to the number of Un UL subframes, ie DL/UL ratio = M: 1, is in an Un UL M bears on the subframe The corresponding ACK/NACK feedback information of the Un DL subframe, where M is the maximum number of ACK/NACK information that can carry the corresponding backhaul link downlink subframe on the uplink subframe of the backhaul link.

The RN determines the processing mode of the ACK/NACK information to be reported and the used PUCCH format according to the backhaul link information and/or the configuration indication of the e B, and the backhaul link information includes at least one of the following: Un DL/UL ratio, Un UL/ DL Sub-config, the downlink data transmission mode of the backhaul link, the M value, the Un PUCCH transmission mode, and the uplink control information content of the backhaul link to be reported on the uplink subframe of the current backhaul link.

The RN transmits the Un PUCCH in a single antenna or multi-antenna transmission diversity mode according to the configuration of the eNB, and the eNB configures the corresponding Un PUCCH resource for the RN. The RN processes the ACK/NACK information corresponding to the M Un DL sub-frames to be reported to the eNB according to the configured transmission mode, and then processes the ACK/NACK information in the corresponding mode and the PUCCH format.

The three modes that the RN can use for uplink ACK/NACK information processing on the backhaul link are: Bundling mode, Multiplexing mode, and cascading mode. The mode is described in detail below.

The Bundling mode includes: performing logical AND operation on the backhaul link uplink ACK/NACK information corresponding to the downlink subframes of the M backhaul links to be reported, forming a 1 or 2 bits Bundling-processed backhaul link uplink ACK. /NACK information. The following is a schematic diagram of the process of the Bundling mode according to the embodiment of the present invention. As shown in FIG. 3, the uplink ACK/NACK information of the M-term backhaul link corresponding to the M Un DL subframes are respectively ; = = 0,1 = 0,1,...,Μ - 1, where, when the downlink data transmission of the backhaul link adopts single stream, = 0, when using dual stream transmission, = 0, 1 corresponds to the item ACK/ NACK information. This item M ACK / NACK information by sequentially codewords logical "and" operation, is formed ACK / NACK information b _t Bundling after treatment, then when = 0,

For _ „ ^ 1 M-\ /. _ «0 ^ 1 M-\

Uo ~ + + . ·> ^υ \ ~ \ \ ... \ °

The multiplexing mode includes: performing logical AND operation on the ACK/NACK information of the different codewords corresponding to the same subframe in the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be reported, And in series according to the downlink subframe of the backhaul link, the uplink ACK/NACK information of the backhaul link after the Mbit Multiplexing process is formed. 4 is a schematic diagram of a multiplexing process mode according to an embodiment of the present invention. As shown in FIG. 4, the uplink ACK/NACK information of the M-term backhaul link corresponding to the M Un DL subframes is ^, / = 0, l, m, respectively. = 0,l,..., - l , where, when the downlink data transmission of the backhaul link adopts a single stream, = 0, When dual-stream transmission, = 0, 1, m corresponds to M-term ACK/NACK information. Performing a logical AND operation on each ACK/NACK information, that is, forming lbits feedback information for each Un DL subframe, and then concatenating the M bits in the Un DL subframe order to form multiplex/processed ACK/NACK information = 0, 1, .. _ 1, then when = 0, is

The cascading mode includes: the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be reported are sequentially connected in the sequence of the downlink subframes of the corresponding backhaul link, and the backhaul chain after the L bits compression processing is formed. The uplink ACK/NACK information, where 1 ≤ J ≤ 2M. For example, FIG. 5 is a schematic diagram of a cascading mode processing procedure according to an embodiment of the present invention. As shown in FIG. 5, the uplink ACK/NACK information of the M-term backhaul link corresponding to the M Un DL subframes is respectively ^, /= 0,l, m = 0,l,..., - l , where, when the downlink data transmission of the backhaul link adopts single stream, = 0, when using dual stream transmission, = 0, 1, m corresponds to M item ACK/ NACK information. The M-term ACK/NACK information is concatenated according to the Un DL subframe order to form cascode-processed ACK/NACK information 6 _m , = 0,1, ..·Μ -1, when = 0, 1 b _t is

e B determines that it is necessary to configure n Un PUCCH resources for the RN according to Un DL/UL ratio, Un UL/DL Sub-config, Un PUCCH transmission mode, processing mode of ACK/NACK information, PUCCH format, etc., and control messages through radio resources. Indicated to the relay station, where n is an integer greater than or equal to 1. Preferably, the eNB configures n Un PUCCH resources for the RN according to the Un DL/UL ratio and the Un PUCCH transmission mode. When the Un PUCCH transmission mode adopts the single antenna mode, n is equal to Un DL/UL ratio, that is, the corresponding Un PUCCH is configured for the ACK/NACK information corresponding to each Un DL subframe; when the Un PUCCH transmission mode adopts the multi-antenna transmission diversity mode, n is equal to P*Un DL/UL ratio, and P is the number of antennas transmitted by Un PUCCH multi-antenna. The RN uses all or some of the resources in the configured n Un PUCCH resources to carry ACK/NACK information, and reports ACK/NACK information to the eNB. Preferably, the n PUCCH resources configured by the eNB for the RN may be continuous resources, that is, n Un PUCCH resource indexes are consecutive, and FIG. 6 is a network side according to an embodiment of the present invention. FIG. 7 is a schematic diagram of the n PUCCH resources configured by the network side for the RN according to an embodiment of the present invention. 7 As shown, the n PUCCH resource indexes can also be equally spaced.

"PUC, CH, 0 , "PUC, CH, 1 = - "PUCCH,0 ₊ ^{τ Λ} k' · · · '" nP ⁽ⁱ U' ^p C ⁾ CH,nl =—〃 nP ⁽ⁱ U' ^p C ^{) CH, 0 + (V "} n -. * k preferably, the radio resource control reconfiguration message to the RRC connection relay station

RRCConnectionRNReconfiguration message. The Un PUCCH transmission mode adopted by the relay station may include at least one of the following: a single antenna transmission mode, and a multi-antenna transmission diversity mode. The single antenna transmission mode uses the antenna port Po. In the multi-antenna transmission diversity mode, the total number of antenna ports used is P, and the multiple antenna ports are Po, P^, P _P — i. Under the same conditions, when the RN transmits the Un PUCCH in the multi-antenna transmission diversity mode, the eNB needs to configure the Un PUCCH resource required by P times in the single-antenna transmission mode. The multi-antenna transmission diversity mode may be a Spatial Orthogonal Resource Transmit Diversity (SORTD) mode, and the total number of antenna ports used in the multi-antenna transmission diversity mode may be P=2. The following describes an example of a method for transmitting ACK/NACK information in different configurations according to an embodiment of the present invention. Example 1 Under TDD UL/DL Config #2, the eNB configures the RN to use Un UL/DL Sub-config #3, and configures the RN to use the Bundling mode to process ACK/NACK information, and uses the dual stream transmission mode to the RN on the backhaul link. Transfer downlink data. The RN determines to use the PUCCH format lb to carry the current radio frame Un DL subframe #3 and on the Un UL subframe #7 according to the configuration of the eNB and the backhaul link information Un DL/UL ratio = 2: 1, ie, M=2. The ACK/NACK information corresponding to the downlink data transmission of Un DL subframe #9 in a radio frame.

The RN processes the ACK/NACK information in the Bundling mode and the PUCCH format lb, and transmits the Un PUCCH in the single antenna transmission mode. The eNB configures an Un PUCCH resource for the RN, and indicates the configured resource to the RN through RRC signaling. The ACK/NACK information corresponding to the current radio frame Un DL subframe #3 is p ₀ , and the ACK/NACK information corresponding to the downlink data transmission of Un DL subframe #9 in the previous radio frame is q ₀ , q, then Bundling processing The latter 2bits ACK/NACK information is b ₀ , where = Ρ. * A = A * , " * " indicates a logical "and" operation. RN \ b _n , h is processed according to the PUCCH format lb, and is mapped to the Un PUCCH resource configured by the eNB, and reports ACK/NACK information to the eNB. Example 2 Under TDDUL/DLConfig#2, the backhaul link uses Un UL/DL Sub-config #4, and the backhaul link uses the dual stream transmission mode to transmit downlink data. The RN determines, according to the backhaul link information, that the multiplex/mode is used, the PUCCH format lb of the channel selection mode processes the ACK/NACK information, and the Un UL subframe #2 carries the previous radio frame UnDL subframes #3, #4, #8. The downlink data transmission corresponds to the ACK/NACK information.

The RN processes the ACK/NACK information using the PUCCH format lb of the channel selection mode, Un DL/UL ratio = 3:1, and transmits the Un PUCCH in the single antenna transmission mode, and the eNB configures three Un PUCCH resources for the RN, and passes the RRC letter. Let the configured resources indicate the RN. The ACK/NACK information corresponding to the previous radio frame Un DL subframes #3, #4, and #8 are respectively _Po , _P , q ₀ , q _x , g ₀ , g, , and the 3 bits ACK/ processed by the U Multiplexing The NACK information is H^, where b ₀ =Po*PoA ⁼⁽ lo*^ =go*g^ "*" indicates logical AND operation. RN treats H according to PUCCH format lb and maps to the channel selection rule On the corresponding Un PUCCH resource, the ACK/NACK information is reported to the eNB. Example 3 Under TDD UL/DLConfig #4, the eNB configures RN Un UL/DL ratio = 3: 1, that is, M=3, and configures to indicate that the RN uses the cascade. The mode processes the ACK/NACK information, and transmits the downlink data to the RN in the dual-stream transmission mode on the backhaul link. The RN determines to use the PUCCH format 3 to carry the previous radio frame Un DL subframe on the Un UL subframe #3 according to the configuration of the eNB. 7. The ACK/NACK information corresponding to the downlink data transmission of #8 and #9.

The RN processes the ACK/NACK information using the PUCCH format 3, and transmits the Un PUCCH in the two-antenna transmit diversity mode. Then, the eNB configures two Un PUCCH resources for the RN, and indicates the RN to the RN through RRC signaling. The ACK/NACK information corresponding to the previous radio frame Un DL subframes #7, #8, #9 is p ₀ , p, q ₀ , q _x , g ₀ , g _x , respectively, and the 6 bits ACK after concatenation processing The /NACK information is Hb ₅ , where H .. ₅ = p. , A, . , , g. , &. H .. ₅ the leg press process PUCCH format 3 in the two antenna ports are mapped to the Un PUCCH resources of the eNB configuration, reporting ACK / NACK information to the eNB. Example 4 Under TDD UL/DL Config #1, the backhaul link uses Un UL/DL Sub-config #2, the eNB configuration instructs the RN to process ACK/NACK information using the Multiplexing mode, and the backhaul link transmits to the RN using the single stream transmission mode. For downlink data, the RN transmits the Un PUCCH using a two-antenna transmit diversity mode. The RN determines, according to the configuration of the eNB and the backhaul link information, that the PUCCH format la using the channel selection mode carries the current radio frame Un DL subframe #4 and the previous radio frame Un DL subframe #9 on Un UL subframe #8. The downlink data transmission corresponds to the ACK/NACK information.

The RN processes the ACK/NACK information using the PUCCH format la of the channel selection mode, Un DL/UL ratio = 2: 1, and transmits the Un PUCCH in the two-antenna transmit diversity mode, and the eNB configures four consecutive Un PUCCH resources for the RN. The configured resources are indicated to the RN by RRC signaling. The ACK/NACK information corresponding to the previous radio frame Un DL subframe #9 is p ₀ , and the ACK/NACK information corresponding to the current radio frame Un DL subframe #4 is q ₀ , then the 2 bits ACK/NACK information after multiplexing processing For , , , , , = ρ. , . The RN will, after processing according to the PUCCH format 1 a, map to the corresponding Un PUCCH resource according to the channel selection rule, and report the ACK/NACK information to the eNB in the two-antenna transmit diversity mode. Example 5 Under TDD UL/DL Config #3, the eNB configures the RN to use Un UL/DL Sub-config #0, and configures the RN to use the Multiplexing mode to process ACK/NACK information, and the backhaul link uses the single stream transmission mode to transmit to the RN. Downstream data, on the same backhaul link uplink subframe, the RN also needs to report CQI information to the eNB, and the eNB configuration instructs the RN to report the Un PUCCH using the two antenna transmit diversity mode. The RN determines, according to the configuration of the eNB, the ACK/NACK information and the CQI information corresponding to the downlink data transmission of the previous radio frame Un DL subframe #7, #9 on the Un UL subframe #3 using the PUCCH format 2b.

The RN processes the ACK/NACK information in the PUCCH format 2b of the channel selection mode, and transmits the Un PUCCH in the two-antenna transmit diversity mode. Then, the eNB configures two Un PUCCH resources for the RN, and indicates the configured resources to the RN through RRC signaling. The ACK/NACK information corresponding to the previous radio frame Un DL subframe #7, #9 is ρ. , q ₀ , then the 2 bits ACK/NACK information processed by Multiplexing is , , , , = ρ. , . The RN, after multiplexing with the CQI information, is processed by the PUCCH format 2b, and then mapped to the corresponding Un PUCCH resource, and reported to the eNB in a two-antenna transmit diversity mode. Embodiments of the present invention further provide a processing system for backhaul link acknowledgement ACK/non-acknowledgement NACK information, which is used to implement the foregoing method. 8 is a structural block diagram of a processing system for ACK/NACK information in a backhaul link according to an embodiment of the present invention. As shown in FIG. 8, the system includes: a relay station 82 and a network side 84. The structure thereof will be described in detail below. The relay station 82 is configured to determine, according to the backhaul link information and/or the configuration indication of the network side 84, a processing mode for transmitting the backhaul link uplink ACK/NACK information to the network side 84 and a physical uplink control channel format PUCCH format, where the backhaul link The information includes at least one of the following: a backhaul link downlink/uplink subframe configuration ratio, a backhaul link subframe configuration, a backhaul link downlink data transmission mode, and a maximum bearable ACK/NACK information on the backhaul link uplink subframe. The number of downlink subframes of the backhaul link, the PUCCH transmission mode of the backhaul link, and the uplink control information of the backhaul link to be reported on the uplink subframe of the current backhaul link; and the uplink ACK of the backhaul link to be sent using the above processing mode and PUCCH format The /NACK information is processed, and the processed backhaul link uplink ACK/NACK information is transmitted to the network side using the Un PUCCH resource configured by the network side 84. Network side 84, a processing mode set to backhaul link information and/or backhaul link uplink ACK/NACK information and/or PUCCH format configures one or more backhaul link physical uplink control channel Un PUCCH resources for relay station 82. In summary, in the embodiment of the present invention, the RN determines a processing mode for transmitting the uplink ACK/NACK information of the backhaul link and a PUCCH format, and the network side allocates an Un PUCCH resource for the relay station, and then the RN processes the uplink according to the foregoing processing mode and the PUCCH format. The ACK/NACK information is transmitted, and the ACK/NACK information is transmitted through the allocated Un PUCCH resource, thereby achieving the effect of being able to transmit ACK/NACK information using the intermediate link. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A method for processing ACK/non-acknowledgment NACK information, including:

The relay station RN determines, according to the backhaul link information and/or the configuration indication on the network side, a processing mode for transmitting the backhaul link uplink ACK/NACK information to the network side, and a physical uplink control channel format PUCCH format, where the backhaul link information The method includes at least one of the following: a backhaul link downlink/uplink subframe configuration ratio, a backhaul link subframe configuration, a backhaul link downlink data transmission mode, and a backhaul corresponding to the maximum bearable ACK/NACK information on the backhaul link uplink subframe. The number of downlink subframes of the link, the PUCCH transmission mode of the backhaul link, and the uplink control information of the backhaul link to be reported on the uplink subframe of the current backhaul link;

The network side configures one or more backhaul link physical uplink control channels Un PUCCH for the relay station according to the processing mode of the backhaul link information and/or the backhaul link uplink ACK/NACK information and/or the PUCCH format. Resource

The relay station processes the backhaul link uplink ACK/NACK information to be sent by using the processing mode and the PUCCH format, and sends the processed backhaul link to the network side by using the configured Un PUCCH resource. Uplink ACK/NACK information.

2. The method according to claim 1, wherein the processing mode comprises at least one of the following:

Bind Bundling mode, Multiplexing mode, cascading mode.

3. The method according to claim 2, wherein the Bundling mode is:

The relay station performs logical AND operation on the backhaul link uplink ACK/NACK information corresponding to the M backhaul link downlink subframes to be transmitted, and forms a backhaul link uplink ACK/NACK information after Bundling processing, where , M is an integer greater than or equal to 1.

The method according to claim 3, wherein the uplink ACK/NACK information of the backhaul link after the Bundling processing is 1 or 2 bits.

5. The method according to claim 3, wherein

The relay station processes the uplink ACK/NACK information of the backhaul link to be sent by using the Bundling mode, and determines that the PUCCH format is a PUCCH format la or lb or a PUCCH format la of a channel selection mode.

6. The method according to claim 3, wherein

The relay station processes the uplink ACK/NACK information of the backhaul link to be sent by using the Bundling mode, and the channel quality indicator CQI and/or the precoding matrix indication PMI and/or rank are required to be reported on the uplink subframe of the current backhaul link. Instructing the RI information, it is determined that the PUCCH format is PUCCH format 2 or 2a or 2b.

The method according to claim 2, wherein the multiplexing mode is:

The relay station performs logical AND operation on the ACK/NACK information corresponding to different codewords of the same subframe in the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be sent, and The information bits after the "AND" operation are sequentially connected in series in the order of the downlink subframes of the backhaul link to form the backhaul link uplink ACK/NACK information, wherein M is an integer greater than or equal to 1.

8. The method according to claim 7, wherein the backhaul link uplink ACK/NACK information of the multiplexing process is M bits.

9. The method according to claim 7, wherein

The relay station processes the uplink link ACK/NACK information of the backhaul link to be sent by using the multiplexing mode, and determines that the PUCCH format is a PUCCH format la or lb or a PUCCH format la or lb of a channel selection mode or a PUCCH format. 3.

10. The method according to claim 7, wherein

The relay station processes the uplink ACK/NACK information of the backhaul link to be sent by using the multiplexing mode, and needs to report CQI and/or PMI and/or RI information on the uplink subframe of the current backhaul link, and then determine The PUCCH format is PUCCH format 2 or 2a or 2b.

11. The method according to claim 2, wherein the cascading mode is:

The relay station sequentially connects the uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links to be sequentially connected in the order of the downlink subframe of the backhaul link to form an uplink ACK of the backhaul link after the L-bit cascading process. NACK information, wherein the M is an integer greater than or equal to 1, 1 ≤ ≤ 2M.

12. The method according to claim 11, wherein

If the relay station processes the backhaul link uplink ACK/NACK information to be sent by using the cascading mode, determining that the PUCCH format is PUCCH format la or lb or PUCCH format la or lb of channel selection mode or PUCCH format 3.

The method according to any one of claims 1 to 12, wherein

The relay station may carry uplink ACK/NACK information of the backhaul link corresponding to the downlink subframes of the M backhaul links, where the M is an integer greater than or equal to 1.

The method according to any one of claims 1 to 12, wherein the PUCCH format comprises at least one of: PUCCH format la or lb, PUCCH format la or lb of channel selection mode, PUCCH format 2 or 2a Or 2b, PUCCH format 3.

The method according to any one of claims 1 to 12, wherein the network side configures a backhaul link physical uplink control channel for the relay station. Un PUCCH resources include:

And the network side configures, by the radio resource control RRC message, the n Un PUCCH resource indexes for the relay station, where the n is an integer greater than or equal to 1.

The method according to any one of claims 1 to 12, wherein

The n PUCCH resources configured by the network side for the relay station are consecutive, or the network side is equally spaced between n Un PUCCH resources configured by the relay station, where the n is greater than or equal to 1 The integer.

The method according to any one of claims 1 to 12, wherein

The network side configures n PUCCH resources for the relay station, where the n is configured by the network side according to a backhaul link downlink/uplink subframe configuration ratio Un DL/UL ratio and/or a backhaul link Un PUCCH transmission mode. It is determined that the n is an integer greater than or equal to 1.

The method according to any one of claims 1 to 12, wherein the network side comprises at least one of: a base station, a relay station, a cell cooperation entity MCE, a gateway GW, a mobility management MME, an evolved universal land Radio Access Network EUTRAN, Operations Management and Maintenance 0AM Manager. A processing system for backhaul link acknowledgement ACK/non-acknowledgment NACK information, including:

The relay station RN is configured to determine, according to the backhaul link information and/or the configuration indication on the network side, a processing mode for transmitting the backhaul link uplink ACK/NACK information to the network side, and a physical uplink control channel format PUCCH format, where the backhaul The link information includes at least one of the following: a backhaul link downlink/uplink subframe configuration ratio, a backhaul link subframe configuration, a backhaul link downlink data transmission mode, and a maximum bearable ACK/NACK information on the backhaul link uplink subframe. Corresponding backhaul link downlink subframe number, backhaul link PUCCH transmission mode, backhaul link uplink control information content to be reported on the current backhaul link uplink subframe; and using the processing mode and the PUCCH format to be sent The backhaul link uplink ACK/NACK information is processed, and the processed backhaul link uplink ACK/NACK information is sent to the network side by using the Un PUCCH resource configured by the network side;

The network side is configured to configure one or more backhaul link physical uplink control for the relay station according to the processing mode of the backhaul link information and/or the backhaul link uplink ACK/NACK information and/or the PUCCH format Channel Un PUCCH resource.