Communication method and apparatus

WO2026037251A1PCT designated stage Publication Date: 2026-02-19HUAWEI TECH CO LTD
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Patent Information

Application Number
PCT/CN2025/113940
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-08-15
Filing Date
2025-08-11
Publication Date
2026-02-19

AI Technical Summary

Technical Problem

Existing short-range wireless communication technologies cannot meet the evolving needs of emerging scenarios in terms of latency, reliability, synchronization accuracy, and security. In particular, when multiple domains and systems coexist in unlicensed frequency bands, how to design a competitive channel mechanism suitable for star-flash communication technology has become an urgent problem to be solved.

Method used

A time-domain resource configuration method for competing channel periods is designed. By configuring each measurement time-domain resource to include an integer number of time-domain resource units, the accuracy and effectiveness of channel measurement are ensured, the probability of the channel being preempted by other systems is reduced, and the number of symbols continuously measured to be close to one time-domain resource unit is used to improve the randomness of the measurement time-domain resource location and reduce the probability of nodes being unable to see each other occupying the channel due to overlapping measurement resources.

Benefits of technology

Effective channel measurement and contention reduce the probability of other systems preempting the channel, improve the accuracy of channel measurement and the reliability of communication, avoid conflicts and missed detections between nodes, and meet the channel contention requirements of StarScan communication technology in a multi-domain coexistence environment.

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Abstract

Embodiments of the present application provide a communication method and apparatus. The method comprises: a first node determines M non-overlapping measurement time domain resources in a first channel contention period; and then, on the basis of a channel state measurement result on at least one of the M measurement time domain resources, the first node determines a channel contention result of the first node in the first channel contention period. The first channel contention period comprises L time domain resource units, each time domain resource unit comprises P consecutive first symbols and Q consecutive second symbols, and the P consecutive first symbols precede the Q consecutive second symbols; each measurement time domain resource comprises N time domain resource units; and M, P and Q are positive integers, L is an integer greater than N, and N is an integer greater than or equal to 2. In the method, the first node can effectively perform channel measurement in a channel contention period, contend for a channel on the basis of a channel measurement result, and communicate using a channel obtained by means of contention.
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Citation Information

Patent Citations

  • Competition-based resource selecting method and apparatus

    CN105101300A

  • Channel competition based resource-pool resource distribution method in vehicle-vehicle communication

    CN106376088A

  • Information transmission method and communication device

    CN114080041A

  • Contention for shared wireless communication channel using multiple dedicated sensing intervals

    US20160360546A1