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Information sending method, information receiving method, terminal and control node

A technology for sending information and controlling nodes, which is applied in the field of communication and can solve problems such as high signaling overhead and low utilization of system resources

Active Publication Date: 2020-10-27
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides an information sending and receiving method, a terminal and a control node, so as to solve the problems of high signaling overhead and low system resource utilization due to the HARQ feedback method in the prior art

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  • Information sending method, information receiving method, terminal and control node
  • Information sending method, information receiving method, terminal and control node
  • Information sending method, information receiving method, terminal and control node

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] When describing the embodiments of the present invention, some concepts used in the following description are explained first.

[0048] In the existing New Radio (New Radio, NR) sidelink (Sidelink), currently, unicast, multicast and broadcast communication are supported. Wherein, the multicast and unicast communication support hybrid automatic repeat request (Hybrid Automatic RepeatreQuest, HARQ). For multicast communication, it is a one-to-many communication mode. When the HARQ function is enabled, any receiving end in the group feeds back NACK, which will cause HARQ retransmission. For receiving users with a long distance, it is easy to fail to receive correctly due to factors such as poor channel quality and building occlusion, resulting ...

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PUM

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Abstract

The invention provides an information sending method, an information receiving method, a terminal and a control node, and relates to the technical field of communication. The information sending method is applied to a sending end, and comprises the following step of sending first information to a receiving end.The first information is used for assisting the receiving end to judge whether to perform hybrid automatic repeat request (HARQ) feedback or not; andthe first information comprises at least one selected from a communication range indication, a corresponding relationship between a geographic area side length and a communication range, a geographic area division rule and a coverage area identifier of a control node where the sending end is located. According to the scheme, the problemsof high signaling costand low system resource utilization rate caused by an HARQ feedback mode in the prior art can be solved, so that the communication cost is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an information sending and receiving method, a terminal and a control node. Background technique [0002] In the existing New Radio (NR) Sidelink (Sidelink, also known as direct communication link) standardization process, it supports the multicast Hybrid Automatic Repeat reQuest (HARQ) function, for the group For broadcast communication, if any receiver feeds back negative acknowledgment (NACK), the sender must retransmit. [0003] Under this premise, there may be some problems. In multicast communication, long-distance users can also receive the data packet, and the decoding success rate of long-distance users will decrease with the increase of distance, which will cause these users to feedback confirmation Failure (Negative acknowledgment, NACK), resulting in some unnecessary retransmissions by the originating user. These unnecessary retransmissions will cause additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W4/021H04W28/04
CPCH04L1/1896H04W4/021H04W28/04H04L1/1812H04L1/1825H04L1/1854H04W64/003H04W4/40H04W72/23H04L1/1864
Inventor 刘是枭纪子超刘思綦邬华明姜炜彭淑燕
Owner VIVO MOBILE COMM CO LTD