# US 12,010,653 B2 · Communication method and communications apparatus for resource selection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,010,653 B2 - Document ID: US12010653B2 - Status: Granted - Kind: B2 - Application number: 17/246,144 - Filed: 2021-04-30 - Published: 2021-08-19 - Granted: 2024-06-11 - Earliest claimed: 2018-11-02 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Xingwei Zhang; Fan Yang; Haining Huang; Zhe Liu - Web page: https://patentgrep.com/patent/US12010653B2 ## CPC - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/40: Resource management for direct mode communication, e.g. D2D or sidelink - H04W 72/53: based on regulatory allocation policies - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract This application provides a communication method and a communications apparatus. The communication method includes: a first terminal device determines a first parameter, where the first parameter is used to indicate a parameter of a sensing window, a parameter of a resource selection window, and/or a parameter of a first time window, and the first time window includes the sensing window and the resource selection window. The first terminal device determines a first resource pool from at least one resource pool based on the first parameter. The first terminal device selects a first resource from the first resource pool. The first terminal device transmits sidelink information on the first resource. According to the method provided in embodiments of this application, a data transmission delay can be reduced and system communication efficiency can be improved. ## Claims ### Claim 1 A communication method, comprising: determining, by a first terminal device, a first parameter, wherein the first parameter indicates one or more of: a parameter of a sensing window, a parameter of a resource selection window, and a parameter of a first time window, and wherein the first time window comprises the sensing window and the resource selection window; determining, by the first terminal device, a first resource pool from at least one resource pool based on the first parameter; selecting, by the first terminal device, a first resource from the first resource pool; and transmitting, by the first terminal device, sidelink information on the first resource, wherein the first parameter comprises at least one of: a start time of the sensing window, an end time of the sensing window, a length of the sensing window, a start time of the resource selection window, an end time of the resource selection window, a length of the resource selection window, a start time of the first time window, an end time of the first time window, or a length of the first time window. ### Claim 2 (depends on 1) The method according to claim 1, wherein one resource pool in the at least one resource pool has a corresponding time window parameter, and a time window parameter corresponding to the first resource pool is the first parameter. ### Claim 3 (depends on 1) The method according to claim 1, wherein the first parameter indicates a duration of the resource selection window, and the duration of the resource selection window is greater than or equal to a processing delay of the first terminal device. ### Claim 4 (depends on 1) The method according to claim 1, wherein the first parameter indicates a duration of the resource selection window, and the duration of the resources selection window is less than or equal to a duration of the sensing window. ### Claim 5 (depends on 1) The method according to claim 1, wherein the first parameter indicates a duration of the resource selection window, and the duration of the resource selection window is a smaller value than a duration of a sensing window of the first resource pool and a duration corresponding to a service delay requirement of the first terminal device. ### Claim 6 (depends on 1) The method according to claim 1, wherein the parameter of the sensing window is determined based on one or more of a resource location of a control channel and a time domain length of the control channel. ### Claim 7 (depends on 1) The method according to claim 1, wherein the first parameter indicates a duration of the resource selection window, and the duration of the resource selection window is determined based on a sensing result. ### Claim 8 (depends on 1) The method according to claim 1, wherein the selecting, by the first terminal device, the first resource from the first resource pool comprises: selecting, by the first terminal device, the first resource from the first resource pool based on a sensing result of a first time period in the sensing window, wherein a duration of the sensing window of the first resource pool is greater than or equal to a duration of a resource selection window of the first resource pool, and wherein a duration of the first time period is equal to the duration of the resource selection window of the first resource pool. ### Claim 9 (depends on 1) The method according to claim 1, wherein the selecting, by the first terminal device, the first resource from the first resource pool comprises: selecting, by the first terminal device, the first resource in a second time period in the resource selection window of the first resource pool based on a sensing result of the sensing window of the first resource pool, wherein a duration of the sensing window of the first resource pool is less than or equal to a duration of a resource selection window of the first resource pool, and wherein a duration of the second time period is equal to the duration of the sensing window of the first resource pool. ### Claim 10 (depends on 1) The method according to claim 1, wherein the method further comprises: receiving, by the first terminal device, resource pool configuration information from a network device, wherein the resource pool configuration information is used to indicate the at least one resource pool and at least one time window parameter corresponding to the at least one resource pool. ### Claim 11 A communication method, comprising: determining, by a first terminal device, a first parameter, wherein the first parameter indicates one or more of: a parameter of a sensing window, a parameter of a resource selection window, and a parameter of a first time window, and wherein the first time window comprises the sensing window and the resource selection window; selecting, by the first terminal device, a first resource from a first resource pool based on the first parameter; and transmitting, by the first terminal device, sidelink information on the first resource, wherein the first parameter comprises at least one of: a start time of the sensing window, an end time of the sensing window, a length of the sensing window, a start time of the resource selection window, an end time of the resource selection window, a length of the resource selection window, a start time of the first time window, an end time of the first time window, or a length of the first time window. ### Claim 12 (depends on 11) The method according to claim 11, wherein the sensing window of the first resource pool is a periodic sensing window, or the resource selection window of the first resource pool is a periodic resource selection window, or a first time window of the first resource pool is a periodic first time window. ### Claim 13 (depends on 11) The method according to claim 11, wherein the parameter of the sensing window is determined based on one or more of a resource location of a control channel and a time domain length of the control channel. ### Claim 14 (depends on 11) The method according to claim 11, wherein the first parameter indicates a duration of the resource selection window, and the duration of the resource selection window is determined based on a sensing result. ### Claim 15 (depends on 11) The method according to claim 11, wherein a sensing window of the first resource pool is located before a resource selection window of the first resource pool in a time domain. ### Claim 16 (depends on 11) The method according to claim 11, wherein the selecting, by the first terminal device, the first resource from the first resource pool based on the first parameter comprises: selecting, by the first terminal device, the first resource from the first resource pool based on a sensing result of a first time period in the sensing window, wherein a duration of the sensing window of the first resource pool is greater than or equal to a duration of the resource selection window of the first resource pool, and wherein a duration of the first time period is equal to the duration of the resource selection window of the first resource pool. ### Claim 17 (depends on 11) The method according to claim 11, wherein the selecting, by the first terminal device, the first resource from the first resource pool based on the first parameter comprises: selecting, by the first terminal device, the first resource in a second time period in the resource selection window of the first resource pool based on a sensing result of the sensing window of the first resource pool, wherein a duration of the sensing window of the first resource pool is less than or equal to a duration of the resource selection window of the first resource pool, and wherein a duration of the second time period is equal to the duration of the sensing window of the first resource pool. ### Claim 18 A communications apparatus, comprising: a processor configured to: determine a first parameter, wherein the first parameter indicates one or more of: a parameter of a sensing window, a parameter of a resource selection window, and a parameter of a first time window, and wherein the first time window comprises the sensing window and the resource selection window; determine a first resource pool from at least one resource pool based on the first parameter; and select a first resource from the first resource pool; and a transmitter configured to transmit sidelink information on the first resource, wherein the first parameter comprises at least one of: a start time of the sensing window, an end time of the sensing window, a length of the sensing window, a start time of the resource selection window, an end time of the resource selection window, a length of the resource selection window, a start time of the first time window, an end time of the first time window, or a length of the first time window. ### Claim 19 (depends on 18) The communications apparatus according to claim 18, wherein the parameter of the sensing window is determined based on one or more of a resource location of a control channel and a time domain length of the control channel. ### Claim 20 (depends on 18) The communications apparatus according to claim 18, wherein the first parameter indicates a duration of the resource selection window, and the duration of the resource selection window is determined based on a sensing result.