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Communication method and device

A communication method and team member technology, applied in wireless communication, vehicle-to-vehicle communication, and vehicle wireless communication services, etc., can solve problems such as inability to determine and normally execute the HARQ mechanism.

Active Publication Date: 2021-12-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, when the multicast HARQ mechanism is implemented at the terminal's access stratum (AS) layer, the terminal's AS cannot determine whether all group members located around the terminal have successfully received the multicast information
In this way, the AS of the terminal cannot normally execute the multicast HARQ mechanism

Method used

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  • Communication method and device
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Embodiment Construction

[0102] In the description of the present application, unless otherwise specified, " / " means "or", for example, A / B may mean A or B. The "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone These three situations. In addition, "at least one" means one or more, and "plurality" means two or more. Words such as "first" and "second" do not limit the number and order of execution, and words such as "first" and "second" do not necessarily limit the difference.

[0103] It should be noted that, in this application, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "for example" is not to be construed as preferred or advantageous over other embodiments or designs. Rather, the use of ...

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Abstract

The present application provides a communication method and device, which relate to a communication device, and are used to enable an AS of a terminal to determine the specific number of group members around the terminal, so that the AS of the terminal can normally execute a multicast HARQ mechanism. The method includes: the V2X layer of the first terminal sends a first message, the first message includes a group identifier, and the first terminal corresponds to the first group member in the group; after that, the V2X layer of the first terminal receives the first message, and determine the number of reachable group members in the group according to the response message; the V2X layer of the first terminal sends the number of reachable group members to the AS of the first terminal.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method and device. Background technique [0002] Vehicle to everything (V2X) technology is the key technology of future intelligent transportation system. It enables communication between vehicles, vehicles and base stations, enabling vehicles to obtain real-time road conditions, road information, pedestrian information and other traffic information, thereby effectively improving the safety of driving, reducing congestion, improving traffic efficiency, and providing on-board entertainment information, etc. [0003] In addition to the broadcast mode based on the PC5 interface, the V2X network can also transmit data in the multicast mode. At present, for the multicast mode, the sending end sends multicast information to the group members in the group, and the group members located around the sending end send an acknowledgment (acknowledgment, A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W4/40H04L1/18H04L5/00
CPCH04W4/06H04W4/40H04L1/1812H04L5/0055H04L2001/0093H04L1/1861H04W4/80H04W4/46H04W76/14H04W76/11H04L12/1868H04L12/1881
Inventor 应江威
Owner HUAWEI TECH CO LTD