# US 2020/0403757 A1 · Data acknowledgment method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0403757 A1 - Document ID: US20200403757A1 - Status: Published application - Kind: A1 - Application number: 17/014,469 - Filed: 2020-09-08 - Published: 2020-12-24 - Earliest claimed: 2018-03-07 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Guogang HUANG; Yunbo LI; Yuchen GUO; Dandan LIANG; Jian YU - Web page: https://patentgrep.com/patent/US20200403757A1 ## CPC - H04L 1/1685: {the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 1/1854: {Scheduling and prioritising arrangements} - H04L 1/1864: {ARQ related signaling (H04L1/1607 takes precedence)} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A station (STA)-side data acknowledgment apparatus includes a transceiver configured to send a data frame and send an acknowledgment request, and a processor configured to control the transceiver to send the acknowledgment request after a duration from an end of sending the data frame. The duration is greater than or equal to a transmission delay on a backhaul link between access points (APs). The acknowledgment request is an acknowledgment request for the data frame. ## Claims ### Claim 1 A station (STA)-side data acknowledgment apparatus, comprising: a transceiver configured to send a data frame and send an acknowledgment request; and a processor configured to control the transceiver to send the acknowledgment request after a duration from an end of sending the data frame, wherein the duration is greater than or equal to a transmission delay on a backhaul link between access points (APs), and the acknowledgment request is an acknowledgment request for the data frame. ### Claim 2 (depends on 1) The STA-side data acknowledgment apparatus according to claim 1, wherein the data frame is configured to carry indication information indicating uplink joint reception. ### Claim 3 (depends on 2) The STA-side data acknowledgment apparatus according to claim 2, wherein the indication information comprises: a return address (RA) field whose value is a medium access control (MAC) address of a virtual coordinated AP and is in the data frame, or a 1-bit uplink joint reception indicator bit in the data frame. ### Claim 4 (depends on 1) The STA-side data acknowledgment apparatus according to claim 1, wherein the transceiver is further configured to receive a beacon, wherein the beacon comprises: a MAC address of an AP, a MAC address of a virtual coordinated AP to which the AP belongs, or the transmission delay on the backhaul link between the APs. ### Claim 5 An access point (AP)-side data acknowledgment apparatus, comprising: a transceiver configured to receive a data packet, and receive an acknowledgment request; and a processor configured to control the transceiver to receive the acknowledgment request after a duration from an end of receiving the data frame, wherein the duration is greater than or equal to a transmission delay on a backhaul link between APs, and the acknowledgment request is an acknowledgment request for the data frame. ### Claim 6 (depends on 5) The AP-side data acknowledgment apparatus according to claim 5, wherein the transceiver is further configured to reply to the acknowledgment request. ### Claim 7 (depends on 5) The AP-side data acknowledgment apparatus according to claim 5, wherein the data frame is configured to carry indication information indicating uplink joint reception. ### Claim 8 (depends on 7) The AP-side data acknowledgment apparatus according to claim 7, wherein the indication information comprises: a return address (RA) field whose value is a medium access control (MAC) address of a virtual coordinated AP and is in the data frame, or a 1-bit uplink joint reception indicator bit in the data frame. ### Claim 9 (depends on 6) The AP-side data acknowledgment apparatus according to claim 6, wherein the transceiver is further configured to send a beacon, wherein the beacon comprises: a MAC address of an AP, a MAC address of a virtual coordinated AP to which the AP belongs, or the transmission delay on the backhaul link between the APs. ### Claim 10 A station (STA)-side data acknowledgment chip, comprising: a transceiver interface configured to send a data frame, and send an acknowledgment request; and a processor configured to control the transceiver interface to send the acknowledgment request after a duration from an end of sending the data frame, wherein the duration is greater than or equal to a transmission delay on a backhaul link between access points (APs), and the acknowledgment request is an acknowledgment request for the data frame. ### Claim 11 (depends on 10) The STA-side data acknowledgment chip according to claim 10, wherein the data frame is configured to carry indication information indicating uplink joint reception. ### Claim 12 (depends on 11) The STA-side data acknowledgment chip according to claim 11, wherein the indication information comprises: a return address (RA) field whose value is a medium access control (MAC) address of a virtual coordinated AP and is in the data frame, or a 1-bit uplink joint reception indicator bit in the data frame. ### Claim 13 (depends on 1) The STA-side data acknowledgment chip according to claim 1, wherein the transceiver interface is further configured to receive a beacon, wherein the beacon comprises: a MAC address of an AP, a MAC address of a virtual coordinated AP to which the AP belongs, or the transmission delay on the backhaul link between the APs. ### Claim 14 (depends on 1) The STA-side data acknowledgment according to claim 1, wherein the transceiver is further configured to receive a reply to the acknowledgment request. ### Claim 15 (depends on 11) The STA-side data acknowledgment chip according to claim 11, wherein the transceiver is further configured to receive a reply to the acknowledgment request.