Method and apparatus for transmitting signals in a wireless communication system

JP2026090612APending Publication Date: 2026-06-02WILUS INSTITUTE OF STANDARDS & TECHNOLOGY INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
WILUS INSTITUTE OF STANDARDS & TECHNOLOGY INC
Filing Date
2026-03-05
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing wireless communication systems face challenges in efficiently transmitting signals, particularly in scenarios requiring high reliability and low latency, such as sidelink communications with high reliability requirements, where conventional channel access methods do not adequately adapt to feedback responses from multiple terminals.

Method used

A method and apparatus for sidelink groupcast transmission in wireless communication systems that adjust the contention window size (CWS) based on feedback signals from multiple terminals, resetting or increasing the CWS depending on the acknowledgment (ACK) or negative acknowledgment (NACK) responses received, thereby optimizing channel access for subsequent transmissions.

Benefits of technology

This approach enhances signal transmission efficiency by dynamically adjusting channel access parameters based on feedback, improving reliability and reducing latency in sidelink communications.

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Abstract

The present invention provides a method for efficiently transmitting signals in a wireless communication system and an apparatus for using this method. [Solution] The present invention relates to a wireless communication system, and more particularly to a method and wireless equipment therefor, comprising the steps of: transmitting an SL groupcast transmission to a plurality of terminals; monitoring a feedback signal on a PSFCH machine corresponding to the SL groupcast transmission to identify the received response results of the plurality of terminals to the SL groupcast transmission; and setting a CWS used for channel connection of an SL transmission after the SL groupcast transmission based on the received response results of the plurality of terminals, wherein if the received response results of the plurality of terminals include at least one NACK, the CWS is set to a value greater than the previous CWS, and if the received response results of the plurality of terminals are all considered to be ACK, the CWS is reset to the minimum CWS value.
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