# US 11,116,003 B2 · Communication method, access point, and station for improving bandwidth utilization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,116,003 B2 - Document ID: US11116003B2 - Status: Granted - Kind: B2 - Application number: 16/103,470 - Filed: 2018-08-14 - Published: 2018-12-13 - Granted: 2021-09-07 - Earliest claimed: 2016-02-15 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yanchun Li; Yunbo Li - Web page: https://patentgrep.com/patent/US11116003B2 ## CPC - H04W 74/002: {Transmission of channel access control information} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 28/20: Negotiating bandwidth - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/20: Control channels or signalling for resource management - H04W 74/0808: using carrier sensing, e.g. carrier sense multiple access [CSMA] - H04W 74/0816: with collision avoidance - H04W 92/20: between access points - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A communication method disclosed in the present disclosure includes: receiving, by an access point, a sending request sent by a first station, and sending clear to send information to the first station; when the access point receives feedback information sent by the first station, allocating, by the access point, a channel to the first station, and allocating a channel to a second station based on remaining bandwidth; generating a first trigger frame, and sending the first trigger frame to the first station and the second station; and receiving uplink data sent by the first station and the second station. The present disclosure further provides an access point and a station that can implement the communication method. According to the present disclosure, bandwidth utilization of the access point and data transmission efficiency can be improved. ## Claims ### Claim 1 A communication method, comprising: broadcasting, by an access point, a sending request on a first bandwidth, wherein the first bandwidth comprises a first channel and a second channel; the sending request includes a first bandwidth parameter, which indicates the first bandwidth is an available bandwidth of the access point; receiving, by the access point, a clear to send (CTS) information, only on the first channel, from one and only a first station in response to the sending request; wherein the CTS information includes a second bandwidth parameter, which corresponds to bandwidth required by the first station; and sending, by the access point, a trigger information to the first station and a second station on the first channel and the second channel of the first bandwidth, respectively, wherein the trigger information schedules the first station and the second station to send uplink data in response to receiving the CTS information from the first station. ### Claim 2 (depends on 1) The method according to claim 1, wherein the sending request is a request to send (RTS) frame, the CTS information is a (CTS) frame, and the trigger information is a trigger frame. ### Claim 3 (depends on 1) The method according to claim 1, wherein the sending request is broadcast on the first channel, the CTS information is received on the second channel which is within the first channel, and the trigger information is sent on the first channel. ### Claim 4 (depends on 1) The method according to claim 1, wherein the sending request is sent in at least one of a non-HT mode, a non-HT repetition mode, and an HE mode. ### Claim 5 A communication method, comprising: receiving, by one and only a first station, a sending request broadcast by an access point on a first bandwidth, wherein the first bandwidth comprises a first channel and a second channel; the sending request includes a first bandwidth parameter, which indicates the first bandwidth is an available bandwidth of the access point; sending, by only the first station over the first channel, a clear to send (CTS) information in response to the sending request; wherein the CTS information includes a second bandwidth parameter, which corresponds to bandwidth required by the first station; receiving, by the first station and a second station, a trigger information on the first channel and the second channel of the first bandwidth, respectively, wherein the trigger information schedules the first station and the second station to send uplink data in response to the CTS information sent by the first station. ### Claim 6 (depends on 5) The method according to claim 5, wherein the sending request is a broadcast request to send (RTS) frame, the CTS information is a (CTS) frame, and the trigger information is a trigger frame. ### Claim 7 (depends on 5) The method according to claim 5, wherein the sending request is received on the first channel, the CTS information is sent on the second channel which is within the first channel, and the trigger information is received on the first channel. ### Claim 8 (depends on 5) The method according to claim 5, further comprising: sending, by the first station and the second station, uplink data based on the trigger information. ### Claim 9 (depends on 5) The method according to claim 5, wherein the sending request is sent in at least one of a non-HT mode, a non-HT repetition mode, and an HE mode. ### Claim 10 A communication apparatus, comprising: a processer; and a memory for storing instructions which, when executed by the processor, cause the communication apparatus to: broadcast a sending request on a first bandwidth, wherein the first bandwidth comprises a first channel and a second channel, the sending request includes a first bandwidth parameter, which indicates the first bandwidth is an available bandwidth of the communication apparatus; receive a clear to send (CTS) information, only on the first channel, from one and only a first station in response to the sending request, wherein the CTS information includes a second bandwidth parameter, which corresponds to bandwidth required by the first station; and sending, a trigger information to the first station and a second station on the first channel and the second channel of the first bandwidth, respectively, wherein the trigger information schedules the first station and the second station to send uplink data in response to receipt of the CTS information from the first station. ### Claim 11 (depends on 10) The apparatus according to claim 10, wherein the sending request is a broadcast request to send (RTS) frame, the CTS information is a (CTS) frame, and the trigger information is a trigger frame. ### Claim 12 (depends on 10) The apparatus according to claim 10, wherein the sending request is broadcast on the first channel, the CTS information is received on the second channel which is within the first channel, and the trigger information is sent on the first channel. ### Claim 13 (depends on 10) The apparatus according to claim 10, wherein the sending request is sent in at least one of a non-HT mode, a non-HT repetition mode, and an HE mode. ### Claim 14 A communication apparatus, comprising: a processer; and a memory for storing instructions which, when executed by the processor, cause the communication apparatus to: receive, by one and only the communication apparatus, a sending request broadcast from an access point on a first bandwidth, wherein the first bandwidth comprises a first channel and a second channel, the sending request includes a first bandwidth parameter, which indicates the first bandwidth is an available bandwidth of the access point; send, only by the apparatus, a clear to send (CTS) information over the first channel in response to the sending request, wherein the CTS information includes a second bandwidth parameter, which corresponds to bandwidth required by the first station; and receive a trigger information sent to the apparatus and a second station on the first channel and the second channel of the first bandwidth, respectively, wherein the trigger information schedules the first station and the second station to send uplink data in response to the receipt of the CTS information from the apparatus, wherein the apparatus is one of multiple stations. ### Claim 15 (depends on 14) The apparatus according to claim 14, wherein the sending request is a broadcast request to send (RTS) frame, the CTS information is a (CTS) frame, and the trigger information is a trigger frame. ### Claim 16 (depends on 14) The apparatus according to claim 14, wherein the sending request is received on the first channel, the CTS information is sent on the second channel which is within the first channel, and the trigger information is received on the first channel.