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Feedback method of hybrid automatic repeat request feedback information, base station and user equipment

A technology of hybrid automatic retransmission and feedback information, applied in wireless communication, error prevention/detection using return channel, electrical components, etc., to achieve the effect of solving HARQ feedback

Inactive Publication Date: 2016-05-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a method for feedbacking HARQ feedback information in UL-MIMO technology, a base station and user equipment, which can solve the problem of HARQ feedback of uplink data in UL-MIMO scenarios

Method used

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  • Feedback method of hybrid automatic repeat request feedback information, base station and user equipment
  • Feedback method of hybrid automatic repeat request feedback information, base station and user equipment
  • Feedback method of hybrid automatic repeat request feedback information, base station and user equipment

Examples

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Embodiment 1

[0032] In Embodiment 1, when the uplink data adopts a single stream, the length of the feedback pattern is 3 information bits. In this way, the original HARQ indication sequence can be compatible.

[0033] Specifically, in figure 1 In step 101 of , the feedback pattern corresponding to the HARQ feedback information can be generated, wherein the HARQ feedback information of dual-stream uplink data is (ACK, ACK), (ACK, NACK), (NACK, ACK) or (NACK, NACK) , the HARQ feedback information of the single-stream uplink data is ACK or NACK. Among them, ACK means acknowledgment, and NACK means negative acknowledgment. The ACK or NACK before the symbol "," means the HARQ feedback information of the uplink data of the mainstream in the dual stream, and the ACK or NACK after the symbol "," means the uplink data of the secondary stream in the dual stream. HARQ feedback information.

[0034] In addition, DTX does not occupy feedback resources. In the case of single and dual streams, the H...

Embodiment 2

[0046] In Embodiment 2, when the base station detects that the user equipment is sending uplink single stream, the length of the feedback pattern is also 6 information bits, but the same feedback pattern is used to indicate when the user equipment is sending single stream and dual stream Different HARQ feedback information, which can compress the number of feedback patterns and improve feedback reliability.

[0047] Specifically, in figure 1 In step 101 of the method, a feedback pattern is generated, wherein the feedback pattern indicating HARQ feedback information (ACK, NACK) indicates HARQ feedback information (ACK, NACK) when uplink is single-stream when uplink is dual-stream, and indicates HARQ feedback information (NACK, NACK) when uplink is dual-stream The feedback pattern indicates HARQ feedback information NACK when the uplink is single-stream, and the feedback pattern indicating HARQ feedback information (ACK, ACK) and (NACK, ACK) is not used when the uplink is single...

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Abstract

An embodiment of the invention provides a feedback method, a base station and user equipment for hybrid automatic repeat request feedback information. The method includes generating a feedback pattern for indicating the HARQ (hybrid automatic repeat request) feedback information of uplink data; and transmitting the feedback pattern to the user equipment. The feedback pattern is a coding sequence consisting of +1 and / or -1, and the length of the feedback pattern is six information bits when the base station detects that the user equipment transmits the uplink double-flow data. The adopted feedback pattern is jointly encoded by the six information bits when the base station detects that the user equipment transmits the uplink double-flow data, accordingly, the HARQ feedback information of the double-flow uplink data can be indicated, and HARQ feedback in UL-MIMO (uplink-multiple-input multiple-output) is realized.

Description

technical field [0001] The embodiments of the present invention relate to the field of wireless communication, and more specifically, relate to a feedback method, a base station and a user equipment of a HARQ (Hybrid Automatic Repeat Request; Hybrid Automatic Repeat Request) indication. Background technique [0002] In the wireless communication system, in order to cooperate with the data transmission of E-DCH (EnhancedDedicated Channel; Enhanced Dedicated Channel), E-HICH (E-DCHHARQIndicatorChannel; E-DCHHARQ Indicator Channel) is set in the downlink. [0003] E-HICH is a dedicated downlink physical channel with a fixed rate, carrying the HARQ acknowledgment indication of the uplink E-DCH, that is, carrying the HARQ acknowledgment indication command through the E-HICH channel, and the command content includes ACK and NACK. Among them, ACK means confirmation (Acknowledge). If the transmitter receives the ACK from the receiver, it means that the transmitter can transmit new d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L1/18H04W88/02H04W88/08
Inventor 胡文权范叔炬花梦胡沙
Owner HUAWEI TECH CO LTD
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