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Systems and methods for user equipment cooperation with sidelink HARQ feedback

A technology for user equipment and feedback messages, applied in the field of wireless communication, can solve the problem of not effectively utilizing UE cooperative SL communication capability and the like

Active Publication Date: 2021-08-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current implementation of HARQ does not effectively utilize UE cooperative SL communication capabilities

Method used

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  • Systems and methods for user equipment cooperation with sidelink HARQ feedback
  • Systems and methods for user equipment cooperation with sidelink HARQ feedback
  • Systems and methods for user equipment cooperation with sidelink HARQ feedback

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0268] Example embodiment 1. A method of user equipment (UE) cooperation, the method comprising:

[0269] receiving at the first UE a transport block addressed to the second UE, the transport block comprising a plurality of code block groups, each code block group comprising a plurality of code blocks; and

[0270] Transmission from the first UE to the second UE is at least one code block of a transmission block sent to the second UE, and the at least one code block group includes a code block group that is less than all code blocks of the transmission block block group.

Embodiment 2

[0271] Example embodiment 2. The method of example embodiment 1, wherein the at least one code block group transmitted from the first UE comprises every code block group that the first UE was able to successfully decode for the transmission block .

Embodiment 3

[0272] Example Embodiment 3. The method of Example Embodiment 1, further comprising:

[0273] receiving scheduling information from a base station at the first UE,

[0274] wherein the at least one code block group transmitted from the first UE is selected from the plurality of code block groups of the transport blocks based at least in part on the scheduling information from the base station.

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Abstract

Methods and devices utilizing sidelink transmission between user equipment (UEs) for HARQ retransmission are provided. The sidelinkHARQ retransmissions include data from the initial transmission or an outer coded version thereof. HARQ feedback from the targeted receiver of the initial transmission may identify code block groups and / or individual code blocks the target receiver did not successfully decode. A UE that has not successfully decoded an entire transport block, may still cooperate in HARQ retransmission for the targeted receiver of the transport block by retransmitting at least a subset of the code block groups that it was able to successfully decode for the transport block.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Patent Application No. 16 / 272,333, entitled "System and Method for User Equipment Coordination with Sidelink HARQ Feedback," filed February 11, 2019, the entire contents of which are incorporated by reference Incorporated into this article. technical field [0003] The present application relates to wireless communication, and in particular to user equipment (user equipment, UE) cooperation through sidelink (sidelink, SL) hybrid automatic repeat request (hybrid automatic repeat request, HARQ) feedback. Background technique [0004] In some wireless communication systems, user equipment (UE) communicates wirelessly with a base station to send data to and / or receive data from the base station. Wireless communication from a UE to a base station is called uplink (UL) communication. Wireless communication from a base station to a UE is called downlink (DL) communication. Wireless ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18
CPCH04L1/1819H04L1/0041H04L1/0077H04L1/0065H04L1/0057H04L2001/0097H04W72/20H04W72/23
Inventor 曹昱阿民·玛瑞夫马江镭
Owner HUAWEI TECH CO LTD
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