Uplink control information feedback and receiving method, base station and relay station

A technology of control information and line control, applied in the directions of wireless communication, electrical components, etc., can solve the problems of inflexible allocation of PUCCH resources and the inability to maintain channel orthogonality well.

Inactive Publication Date: 2011-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the relay station feeds back uplink control information in the uplink subframe of the backhaul link through the PUCCH channel, but the R-PUCCH format 1 / 1a / 1b channel will cause the length of OC (Orthogonal Cover, orthogonal sequence) in the time domain to be different from that of PUCCH format 1 The time domain OC length of / 1a / 1b channel is different, when R-PUCCH format 1 / 1a / 1b channel and PUCCH format 1 / 1a / 1b channel use the same or adjacent CAZAC (Constant AmplitudeZero Auto-Correlation, constant amplitude zero When the autocorrelation) sequence is cyclically shifted, the orthogonality between the channels cannot be well maintained and the PUCCH resource allocation is inflexible

Method used

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  • Uplink control information feedback and receiving method, base station and relay station
  • Uplink control information feedback and receiving method, base station and relay station
  • Uplink control information feedback and receiving method, base station and relay station

Examples

Experimental program
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Effect test

Embodiment 1

[0052] like Figure 7 As shown, the methods for feeding back uplink control information include:

[0053] S71. The relay station receives the PUCCH format 2 / 2a / 2b channel resources allocated by the base station.

[0054] S72. The relay station feeds back uplink control information on the PUCCH format 2 / 2a / 2b channel resource; wherein the uplink control information includes response information and / or SRI information.

[0055] The above response information includes ACK and / or NACK.

[0056] Further, the uplink control information may further include: RI and / or CQI and / or PMI information and the like.

[0057] Using the method, the relay station can feed back uplink response information and / or SRI information on the PUCCH format 2 / 2a / 2b channel resources. When the Gap occupies part of the OFDM symbols, since the PUCCH format 2 / 2a / 2b channel only passes Different cyclic shift code division multiplexing of CAZAC sequences in the frequency domain, the orthogonality between chan...

Embodiment 2

[0078] like Figure 8 As shown, the method for receiving uplink control information includes:

[0079] S81. The base station allocates PUCCH format 2 / 2a / 2b channel resources to the relay station;

[0080] S82. The base station receives the uplink control information fed back by the relay station on the PUCCH format 2 / 2a / 2b channel resource; wherein the uplink control information includes response information and / or SRI information.

[0081] The above response information includes ACK and / or NACK.

[0082] Further, the uplink control information may further include: RI and / or CQI and / or MI information and the like.

[0083]Since the base station can allocate PUCCH format 2 / 2a / 2b channel resources for uplink response information and / or SRI information, when the Gap occupies part of OFDM symbols, the PUCCH format 2 / 2a / 2b channel only passes through different cyclic shifts of frequency domain CAZAC sequences. Bit-code division multiplexing, the orthogonality between channel res...

Embodiment 3

[0098] like Figure 9 As shown, a base station 900 includes an allocation unit 901 and a first receiving unit 902 . in:

[0099] The allocating unit 901 is configured to allocate PUCCH format 2 / 2a / 2b channel resources for the relay station.

[0100] The method for allocating PUCCH channel resources for the relay station by the allocating unit 901 is as follows: Figure 10 hint, of which Indicates the maximum number of resource blocks used to transmit PUCCH format 2 / 2a / 2b channels, Indicates the number of cyclic shifts of the CAZAC sequence allocated to the PUCCH format 1 / 1a / 1b channel on the PUCCH mixed resource block, Indicates the starting offset of dynamic response resource mapping in all PUCCH format 1 / 1a / 1b channels.

[0101] The first receiving unit 902 is configured to receive the uplink control information fed back by the relay station on the PUCCH format 2 / 2a / 2b channel resource.

[0102] Wherein, the uplink control information includes: response information ...

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Abstract

The invention discloses an uplink control information feedback and receiving method, a base station and a relay station, which can maintain the orthogonality of a PUCCH (Physical Uplink Control Channel) of the relay station and a PUCCH of UE (user equipment) while realizing the flexible PUCCH resource distribution of the relay station. The uplink control information feedback method comprises the following steps of: receiving PUCCH format 2/2a/2b channel resources distributed by the base station; and feeding back uplink control information on the PUCCH format 2/2a/2b channel resources, wherein the uplink control information comprises answering information and/or SRI information. The method for receiving the uplink control information comprises the following steps of: assigning the PUCCH format 2/2a/2b channel resources to the relay station, and receiving the uplink control information fed back by the relay station on the PUCCH format 2/2a/2b channel resources, wherein the uplink control information comprises answering information and/or SRI information. The embodiment of the invention can maintain the orthogonality of the PUCCH of the relay station and the PUCCH of the UE while realizing the flexible PUCCH resource distribution of the relay station.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for feeding back and receiving uplink control information, a base station and a relay station. Background technique [0002] The Long Term Evolution Advanced (LTE-A) system adopts the relay technology to support the coverage of high data rate transmission, group mobility and cell edge throughput, etc. In the LTE-A system, the relay station communicates with the base station through the backhaul link, the relay station communicates with the user equipment Relay UE served by it through the access link, and the user equipment UE served by the non-relay station directly communicates with The base station communicates. [0003] In the LTE-A system, both the relay station and the UE can feed back uplink control information in uplink subframes through the Physical Uplink Control Channel (PUCCH), such as Scheduling Request Indicator (SRI), acknowledgment ACK, negative respon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/14
Inventor 陈小波曲秉玉白伟陈小峰杨瑞娜
Owner HUAWEI TECH CO LTD
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