# US 12,004,196 B2 · Method for coordinated multi-access point AP transmission and related apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,196 B2 - Document ID: US12004196B2 - Status: Granted - Kind: B2 - Application number: 18/190,658 - Filed: 2023-03-27 - Published: 2023-09-28 - Granted: 2024-06-04 - Earliest claimed: 2018-02-08 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yuchen Guo - Web page: https://patentgrep.com/patent/US12004196B2 ## CPC - H04W 28/16: Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service] - H04W 72/27: between access points - H04W 52/42: in systems with time, space, frequency or polarisation diversity - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/12: Wireless traffic scheduling - H04W 74/08: Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W 88/08: Access point devices - 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) ## Abstract Embodiments of this application disclose a method for multi-access point AP coordination and a related apparatus. The method in the embodiments of this application includes: generating, by a first access point AP, a first radio frame, where the first radio frame includes indication information used to indicate transmission duration of a second radio frame sent by a second access point AP; sending, by the first access point AP, the first radio frame to the second access point AP; and in a sending period of the second radio frame, sending, by the first access point AP, a third radio frame to a first station STA associated with the first access point AP. ## Claims ### Claim 1 A method for coordinated multi-access point (AP) transmission, comprising: generating, by a first AP, a first radio frame, wherein the first radio frame comprises indication information indicating a transmission duration of a second radio frame sent by a second AP, and wherein the first radio frame carries transmit power information of the second AP; sending, by the first AP, the first radio frame to the second AP; and in a sending period of the second radio frame, sending, by the first AP, a third radio frame to a first station (STA) associated with the first AP. ### Claim 2 (depends on 1) The method according to claim 1, wherein the indication information comprises a sending time and an end time of the second radio frame. ### Claim 3 (depends on 1) The method according to claim 1, wherein a sending time of the third radio frame is the same as a sending time of the second radio frame. ### Claim 4 (depends on 1) The method according to claim 1, wherein a sending time of the third radio frame is earlier than a sending time of the second radio frame. ### Claim 5 (depends on 1) The method according to claim 1, wherein the indication information comprises identifier information of the second AP. ### Claim 6 (depends on 1) The method according to claim 1, wherein the first radio frame further carries one or more of the following: information about a maximum tolerable interference threshold for the first AP, or transmit power information of the first AP. ### Claim 7 A method for coordinated multi-access point (AP) transmission, comprising: receiving, by a second AP, a first radio frame sent by a first AP, wherein the first radio frame comprises indication information indicating a transmission duration of a second radio frame sent by a second AP, and wherein the first radio frame carries transmit power information of the second AP; sending, by the second AP in a sending period of sending a third radio frame by the first AP to a first station (STA) associated with the first AP, the second radio frame to a second STA associated with the second AP. ### Claim 8 (depends on 7) The method according to claim 7, wherein the indication information comprises a sending time and an end time of the second radio frame. ### Claim 9 (depends on 7) The method according to claim 7, wherein a sending time of the second radio frame is the same as a sending time of the third radio frame. ### Claim 10 (depends on 7) The method according to claim 7, wherein a sending time of the second radio frame is earlier than a sending time of the third radio frame. ### Claim 11 (depends on 7) The method according to claim 7, wherein the indication information comprises identifier information of the second AP. ### Claim 12 (depends on 7) The method according to claim 7, wherein the transmission duration of the second radio frame is the same as a transmission duration of the third radio frame. ### Claim 13 (depends on 7) The method according to claim 7, wherein the first radio frame further carries one or more of the following: information about a maximum tolerable interference threshold for the first AP, or transmit power information of the first AP. ### Claim 14 An apparatus, comprising: at least one processor; and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to: generate a first radio frame, wherein the first radio frame comprises indication information indicating a transmission duration of a second radio frame sent by a second AP, and wherein the first radio frame carries transmit power information of the second AP; send the first radio frame to the second AP; and in a sending period of the second radio frame, send a third radio frame to a first station (STA) associated with a first AP. ### Claim 15 (depends on 14) The apparatus according to claim 14, wherein the indication information comprises a sending time and an end time of the second radio frame. ### Claim 16 (depends on 14) The apparatus according to claim 14, wherein a sending time of the third radio frame is the same as a sending time of the second radio frame. ### Claim 17 (depends on 14) The apparatus according to claim 14, wherein a sending time of the third radio frame is earlier than a sending time of the second radio frame. ### Claim 18 (depends on 14) The apparatus according to claim 14, wherein the indication information comprises identifier information of the second AP. ### Claim 19 (depends on 14) The apparatus according to claim 14, wherein the first radio frame further carries one or more of the following: information about a maximum tolerable interference threshold for the first AP, or transmit power information of the first AP.