Wireless communication method and first device

Patent metadata

Field	Value
Publication number	US-12526089-B2
Application number	US-202318243340-A
Country	US
Kind code	B2
Filing date	Sep 7, 2023
Priority date	Mar 10, 2021
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

Embodiments of the present disclosure provide a wireless communication method and a first device. The method includes: adjusting, by the first device, a contention window corresponding to each priority of at least one priority, based on feedback information for a first channel transmitted within a reference time unit or a reference time period. A transmission mode of the first channel includes at least one of a groupcast transmission mode, a multicast transmission mode, or a broadcast transmission mode.

First claim

What is claimed is:

1 . A wireless communication method, comprising:
adjusting, by a first device, a contention window corresponding to each priority of at least one priority based on feedback information for a first channel, wherein the first channel is transmitted within a reference time unit or a reference time period, the at least one priority is a channel access priority, and a transmission mode of the first channel comprises at least one of a groupcast transmission mode, a multicast transmission mode, or a broadcast transmission mode; wherein said adjusting, by the first device, the contention window corresponding to each priority of the at least one priority based on the feedback information for the first channel transmitted within the reference time unit or the reference time period comprises: when a feedback scheme for the first channel is an Acknowledgement (ACK)/NACK feedback scheme, adjusting, by the first device, the contention window corresponding to each priority based on at least one of a quantity of received ACKs, or a proportion of the received ACKs.

2 . The method according to claim 1 , wherein said adjusting, by the first device, the contention window corresponding to each priority of the at least one priority based on the feedback information for the first channel transmitted within the reference time unit or the reference time period comprises:
when a feedback scheme for the first channel is a Negative ACKnowledgement (NACK)-Only feedback scheme of feeding back NACK only, adjusting, by the first device, the contention window corresponding to each priority based on at least one of a quantity of received NACKs, a proportion of the received NACKs, or power on a resource used to receive the NACK.

3 . The method according to claim 2 , wherein said adjusting, by the first device, the contention window corresponding to each priority based on the at least one of the quantity of the received NACKs, the proportion of the received NACKs, or the power on the resource used to receive the NACK comprises:
when second devices corresponding to the first channel transmit feedback information on a same resource, adjusting, by the first device, the contention window corresponding to each priority by at least one of: when the NACK is received, increasing the contention window corresponding to each priority to a next allowable value; when the quantity of the received NACKs is greater than or equal to P, increasing the contention window corresponding to each priority to the next allowable value, wherein P is configured by a network, is preconfigured, is predefined, or is dependent on an implementation of the first device, wherein P is greater than or equal to 0; when received power measured on the resource receiving the NACK is greater than or equal to a threshold H, increasing the contention window corresponding to each priority to the next allowable value, wherein H is configured by the network, is preconfigured, is predefined, or is dependent on the implementation of the first device, wherein H is greater than or equal to 0; when no NACK is received, adjusting the contention window corresponding to each priority to a minimum allowable value; when the quantity of the received NACKs is smaller than or equal to P, adjusting the contention window corresponding to each priority to the minimum allowable value; or when the received power measured on the resource receiving the NACK is smaller than or equal to the threshold H, adjusting the contention window corresponding to each priority to the minimum allowable value.

4 . The method according to claim 2 , wherein said adjusting, by the first device, the contention window corresponding to each priority based on the at least one of the quantity of the received NACKs, the proportion of the received NACKs, or the power on the resource used to receive the NACK comprises:
when second devices corresponding to the first channel transmit feedback information on their respective independent resources, adjusting, by the first device, the contention window corresponding to each priority by at least one of: when the NACK is received, increasing the contention window corresponding to each priority to a next allowable value; when the quantity of the received NACKs is greater than or equal to P, increasing the contention window corresponding to each priority to the next allowable value, wherein P is configured by a network, is preconfigured, is predefined, or is dependent on an implementation of the first device, wherein P is greater than or equal to 0; when the proportion of the received NACKs is greater than or equal to F %, increasing the contention window corresponding to each priority to the next allowable value, wherein F is configured by the network, is preconfigured, is predefined, or is dependent on the implementation of the first device, wherein F is greater than or equal to 0; when no NACK is received, adjusting the contention window corresponding to each priority to a minimum allowable value; when the quantity of the received NACKs is smaller than or equal to P, adjusting the contention window corresponding to each priority to the minimum allowable value; or when the proportion of the received NACKs is smaller than or equal to F %, adjusting the contention window corresponding to each priority to the minimum allowable value.

5 . The method according to claim 1 , wherein said adjusting, by the first device, the contention window corresponding to each priority based on the at least one of the quantity of the received ACKs, or the proportion of the received ACKs, comprises:
when second devices corresponding to the first channel feed back the ACK or the NACK on respective independent resources, adjusting, by the first device, the contention window corresponding to each priority by at least one of: when the quantity of the received ACKs is smaller than or equal to a threshold O, increasing the contention window corresponding to each priority to a next allowable value, wherein O is configured by a network, is preconfigured, is predefined, or is dependent on an implementation of the first device, wherein O is greater than or equal to 0; when a ratio between the quantity of the received ACKs and the quantity of the receivable ACKs/NACKs is smaller than or equal to a threshold R, increasing the contention window corresponding to each priority to the next allowable value, wherein R is configured by the network, is preconfigured, is predefined, or is dependent on the implementation of the first device, wherein R is an integer or a non-integer; when the quantity of the received ACKs is greater than or equal to a threshold T, adjusting the contention window corresponding to each priority to a minimum allowable value, wherein T is configured by the network, is preconfigured, is predefined, or is dependent on the implementation of the first device, wherein T is greater than or equal to 0; or when the ratio between the quantity of the received ACKs and the quantity of the receivable ACKs/NACKs is greater than or equal to a threshold X, adjusting the contention window corresponding to each priority to the minimum allowable value, wherein X is configured by the network, is preconfigured, is predefined, or is dependent on the implementation of the first device, wherein X is an integer or a non-integer.

6 . The method according to claim 1 , wherein said adjusting, by the first device, the contention window corresponding to each priority of the at least one priority based on the feedback information for the first channel transmitted within the reference time unit or the reference time period comprises:
when the first channel corresponds to no feedback information, adjusting, by the first device, the contention window corresponding to each priority

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Ding Yi
• Wu Zuomin

Classifications

• H04W74/0808 Primary

  using carrier sensing, e.g. carrier sense multiple access [CSMA] · CPC title

• H04L1/1854 Primary

  Scheduling and prioritising arrangements · CPC title

• H04L1/1861

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title