Data transmission method and apparatus, and storage medium

Patent metadata

Field	Value
Publication number	US-12284593-B2
Application number	US-202117778131-A
Country	US
Kind code	B2
Filing date	Jan 5, 2021
Priority date	Jan 13, 2020
Publication date	Apr 22, 2025
Grant date	Apr 22, 2025

Abstract

A data transmission method and apparatus, and a non-transitory computer-readable storage medium are disclosed. The data transmission method may include: sending, by a first communication node, a radio frame comprising indication information to a second communication node, wherein the second communication node is associated with a third communication node, the third communication node and the first communication node perform joint transmission, and the indication information is configured to instruct a fourth communication node other than the second communication node, after receiving the radio frame, to determine whether to compete for channel access according to the indication information.

First claim

The invention claimed is:

1. A data transmission method, comprising:
sending, by a first communication node, a radio frame comprising indication information to a second communication node, wherein the second communication node is associated with a third communication node, the third communication node and the first communication node perform joint transmission for the second communication node, and the indication information is configured to instruct a fourth communication node other than the second communication node, after receiving the radio frame, to determine whether to use spatial multiplexing technology for transmission according to the indication information, wherein the second communication node is a target receiver of the radio frame, and the fourth communication node is not the target receiver of the radio frame;
wherein the first communication node and the third communication node are access points (APs), and the second communication node and the fourth communication node are stations (STAs).

2. The method of claim 1 , wherein:
the indication information comprises first identifier information; and
the first identifier information is configured to indicate one of:
whether the radio frame is a joint transmission radio frame;
an identifier of the first communication node; or
an identifier of joint transmission.

3. The method of claim 2 , wherein in the case that the first identifier information is configured to indicate the identifier of the first communication node, the first identifier information comprises at least one of:
a color of a basic service set (BSS) where the first communication node is located,
an identifier of the BSS where the first communication node is located,
a value generated according to the identifier of the BSS where the first communication node is located,
an identifier of the first communication node, or
a value generated according to the identifier of the first communication node.

4. The method of claim 2 , wherein in the case that the first identifier information is configured to indicate the identifier of joint transmission, the first identifier information comprises an exclusive identifier of joint transmission, or an identifier of a joint transmission group.

5. The method of claim 2 , wherein the indication information further comprises second identifier information, and the second identifier information is configured to indicate at least one of: an identifier of the third communication node, or an identifier of the target receiver.

6. The method of claim 5 , wherein the second identifier information comprises at least one of:
a color of a basic service set (BSS) where the third communication node is located,
an identifier of the BSS where the third communication node is located,
a value generated according to the identifier of the BSS where the third communication node is located,
an identifier of the third communication node, or
a value generated according to the identifier of the third communication node.

7. The method of claim 6 , wherein the identifier of the third communication node comprises at least one of:
a media access control (MAC) address of the third communication node, or
a value generated according to the MAC address of the third communication node.

8. The method of claim 1 , wherein:
the joint transmission means that the first communication node and the third communication node simultaneously send the radio frame to the second communication node; or,
the joint transmission means that the first communication node alone sends the radio frame to the second communication node.

9. A data transmission apparatus, comprising a processor, the processor being configured to implement the data transmission method of claim 1 when executing a computer program.

10. A non-transitory computer-readable storage medium storing a computer program which, when executed by a processor, causes the processor to implement the data transmission method of claim 1 .

11. A data transmission method, comprising:
receiving, by a fourth communication node, a radio frame including indication information sent by a first communication node, wherein the first communication node and a third communication node perform joint transmission for a second communication node; and
determining, by the fourth communication node, whether to use spatial multiplexing technology for transmission according to the indication information, wherein the second communication node is a target receiver of the radio frame, and the fourth communication node is not the target receiver of the radio frame;
wherein the first communication node and the third communication node are access points (APs), and the second communication node and the fourth communication node are stations (STAs).

12. The method of claim 11 , wherein:
the indication information comprises first identifier information; and
the first identifier information is configured to indicate one of:
whether the radio frame is a joint transmission radio frame,
an identifier of the first communication node, or
an identifier of joint transmission.

13. The method of claim 12 , wherein in the case that the first identifier information is configured to indicate whether the radio frame is a joint transmission radio frame, the fourth communication node determining whether to use spatial multiplexing technology for transmission according to the indication information comprises:
in response to determining that the first identifier information indicates that the radio frame is a joint transmission radio frame, the fourth communication node determining not to use spatial multiplexing technology for transmission after receiving the indication information.

14. The method of claim 13 , after determining not to use spatial multiplexing technology for transmission, further comprising:
the fourth communication node entering a sleep mode.

15. The method of claim 14 , wherein a sleep duration of the fourth communication node is: a duration of the radio frame or a time period indicated in the radio frame.

16. The method of claim 12 , wherein in the case that the first identifier information is configured to indicate the identifier of the first communication node, the fourth communication node determining whether to use spatial multiplexing technology for transmission according to the indication information comprises:
in response to determining that the fourth communication node is a communication node associated with the first communication node, the fourth communication node determining not to use spatial multiplexing technology for transmission after receiving the indication information;
in response to determining that the fourth communication node is a communication node associated with the third communication node and the fourth communication node is not the target receiver of the radio frame, the fourth communication node determining not to use spatial multiplexing technology for transmission after receiving the indication information; and
in response to determining that the fourth communication node is a communication node associated with neither the first communication node nor the third communication node, the fourth communication node determining to use spatial multiplexing technology for transmission after receiving the indication information.

17. The method of claim 12 , wherein in the case that the first identifier information is configured to indicate the identifier of joint transmission, the fourth communication node determining whether to use spatial multiplexing technology for trans

Assignees

• Zte Corp

Inventors

• Han Zhiqiang
• Li Nan
• Yang Dan
• Sun Bo

Classifications

• H04W74/08 Primary

  Non-scheduled access, e.g. ALOHA (hybrid access H04W74/02) · CPC title

• H04L5/0035

  Resource allocation in a cooperative multipoint environment · CPC title

• H04W76/15

  Setup of multiple wireless link connections · CPC title

• H04W84/12

  WLAN [Wireless Local Area Networks] · CPC title

• H04W74/006

  in the downlink, i.e. towards the terminal · CPC title