Communication method and apparatus

Patent metadata

Field	Value
Publication number	US-12592805-B2
Application number	US-202318350810-A
Country	US
Kind code	B2
Filing date	Jul 12, 2023
Priority date	Jan 13, 2021
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A communication apparatus and a communication method are disclosed. According to the communication method, a first device sends a block acknowledgment request frame to a second device. The block acknowledgment request frame is used to request the second device to send a block acknowledgment frame indicating a receiving status of an access control layer protocol data unit in first transmission. The first transmission is suspended at a first moment that is earlier than a transmission end moment when the first transmission is not suspended. The first device receives the block acknowledgment frame. The first device starts, at a second moment, to perform second transmission.

First claim

What is claimed is:

1 . A communication apparatus, comprising:
at least one processor; and one or more memories coupled to the at least one processor and storing instructions that, when executed by the at least one processor, cause the communication apparatus to perform operations comprising: sending a block acknowledgment request frame to a second device, wherein the block acknowledgment request frame requests the second device to send a block acknowledgment frame, the block acknowledgment frame indicates a receiving status of an access control layer protocol data unit in first transmission, the first transmission is suspended at a first moment, and the first moment is earlier than a transmission end moment when the first transmission is not suspended; receiving the block acknowledgment frame sent by the second device; and starting, at a second moment, to perform second transmission, wherein a transmission priority of the second transmission is higher than a transmission priority of the first transmission, and the second moment is later than a transmission end moment of the block acknowledgment frame, wherein the sending a block acknowledgement request frame to a second device comprises: sending the block acknowledgement request frame to the second device at a third moment, wherein the third moment is later than the first moment, and the third moment is earlier than the transmission end moment when the first transmission is not suspended.

2 . The apparatus according to claim 1 , wherein the sending a block acknowledgment request frame to a second device comprises:
suspending the first transmission at the first moment, wherein a physical layer protocol data unit in the first transmission carries the block acknowledgment request frame.

3 . The apparatus according to claim 1 , wherein after sending the block acknowledgment request frame, the operations further comprise:
when the communication apparatus does not receive the block acknowledgment frame within a preset duration after the block acknowledgment request frame is sent, re-contending for a channel, or continuing to send a physical layer protocol data unit to the second device, or starting to perform third transmission.

4 . The apparatus according to claim 1 , wherein when no response frame is configured for the second transmission, an end moment of the second transmission is not later than the transmission end moment when the first transmission is not suspended; or
when a response frame is configured for the second transmission, a transmission end moment of the response frame in the second transmission is not later than the transmission end moment when the first transmission is not suspended.

5 . The apparatus according to claim 1 , wherein before the sending a block acknowledgment request frame to a second device, the operations further comprise:
sending indication information to the second device, wherein the indication information indicates that there is a possibility of preemptive transmission.

6 . The apparatus according to claim 5 , wherein the indication information indicates the second device to receive a new physical layer protocol data unit after the first transmission is suspended.

7 . The apparatus according to claim 5 , wherein the indication information is carried in a physical layer protocol data unit in the first transmission.

8 . A communication apparatus, comprising:
at least one processor; and one or more memories coupled to the at least one processor and storing instructions that, when executed by the at least one processor, cause the communication apparatus to perform operations comprising: determining that first transmission is suspended, wherein a suspension moment of the first transmission is earlier than a transmission end moment when the first transmission is not suspended; receiving a block acknowledgment request frame sent by a first device, wherein the block acknowledgment request frame requests the communication apparatus to send a block acknowledgment frame, and the block acknowledgment frame indicates a receiving status of an access control layer protocol data unit in the first transmission; and sending the block acknowledgment frame to the first device, wherein the receiving a block acknowledgement request frame sent by a first device comprises: receiving, by the communication apparatus before the first transmission is suspended, the block acknowledgement request frame carried in a physical layer protocol data unit in the first transmission.

9 . The apparatus according to claim 8 , wherein before the determining that first transmission is suspended, the operations further comprise:
receiving indication information sent by the first device, wherein the indication information indicates that there is a possibility of preemptive transmission; and enabling a function of receiving a new physical layer protocol data unit after the first transmission is suspended.

10 . The apparatus according to claim 9 , wherein the indication information indicates the communication apparatus to receive the new physical layer protocol data unit after the first transmission is suspended.

11 . The apparatus according to claim 9 , wherein the indication information is carried in a physical layer protocol data unit in the first transmission.

12 . The apparatus according to claim 8 , wherein after the receiving a block acknowledgment request frame sent by a first device, the operations further comprise:
modifying a receiving status of a physical layer to an idle state; or maintaining a receiving status of a physical layer as a busy state.

13 . A communication method performed by a first device, comprising:
sending a block acknowledgment request frame to a second device, wherein the block acknowledgment request frame requests the second device to send a block acknowledgment frame, the block acknowledgment frame indicates a receiving status of an access control layer protocol data unit in first transmission, the first transmission is suspended at a first moment, and the first moment is earlier than a transmission end moment when the first transmission is not suspended; receiving the block acknowledgment frame sent by the second device; and starting, by the first device at a second moment, to perform second transmission, wherein a transmission priority of the second transmission is higher than a transmission priority of the first transmission, and the second moment is later than a transmission end moment of the block acknowledgment frame, wherein the sending a block acknowledgement request frame to a second device comprises: sending the block acknowledgement request frame to the second device at a third moment, wherein the third moment is later than the first moment, and the third moment is earlier than the transmission end moment when the first transmission is not suspended.

14 . The method according to claim 13 , wherein the sending a block acknowledgment request frame to a second device comprises:
suspending the first transmission at the first moment, wherein a physical layer protocol data unit in the first transmission carries the block acknowledgment request frame.

15 . The method according to claim 13 , wherein after the first device sends the block acknowledgment request frame, the method further comprises:
when the first device does not receive the block acknowledgment frame within a preset duration after the block acknowledgment request frame is sent, re-contending for a channel, or continuing to send a physical layer protocol data unit to the second device, or starting to perform third trans

Assignees

• Huawei Tech Co Ltd

Inventors

• Yang Mao
• Yan Zhongjiang
• Li Yiqing
• Li Yunbo
• Yu Jian
• Gan Ming

Classifications

• H04L1/1887

  Scheduling and prioritising arrangements · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W74/0816 Primary

  with collision avoidance · CPC title

• H04L47/245

  using preemption · CPC title

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title