CN-122026972-A - Uplink cooperative beam forming C-BF method, device and equipment

Abstract

The application provides an uplink cooperative beam forming C-BF method, device and equipment, which are applied to a first station associated with a first access point, wherein the method comprises the steps that the first station receives a first frame sent by a second access point, the first access point and the second access point belong to a multi-access point cooperative set, and the first frame is used for triggering the first station to start an uplink channel detection flow; the first station sends a second frame which is used for indicating the first access point and the second access point to feed back uplink channel information, and the first station sends a third frame which is used for carrying out channel estimation on the first access point and the second access point to obtain the uplink channel information.

Inventors

• CHE HUI

Assignees

• 锐捷网络股份有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (20)

1. 1. An uplink cooperative beam forming C-BF method applied to a first station associated with a first access point, comprising: the first station receives a first frame sent by a second access point, wherein the first access point and the second access point belong to a multi-access point cooperation set, and the first frame is used for triggering the first station to start an uplink channel detection flow; The first station sends a second frame, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information; And the first station sends a third frame which is used for carrying out channel estimation on the first access point and the second access point to acquire uplink channel information.
2. 2. The method according to claim 1, wherein the method further comprises: The first station sends a fourth frame, and the fourth frame is used for triggering the first access point and the second access point to feed back uplink channel information; the first station receives a fifth frame sent by the first access point and the second access point, wherein the fifth frame comprises feedback uplink channel information.
3. 3. The method according to claim 1 or 2, characterized in that the method further comprises: the first station sends a sixth frame to the second access point, the sixth frame is used for indicating the first station to complete the collection of the uplink channel information, or And the first station sends a sixth frame to the first access point, wherein the sixth frame is used for indicating the first station to finish the collection of the uplink channel information.
4. 4. A method according to any one of claims 1-3, characterized in that the method further comprises: The first station receives a seventh frame sent by the first access point, wherein the seventh frame is used for triggering the first station to perform C-BF transmission based on a precoding matrix, the precoding matrix is determined based on uplink channel information fed back by a plurality of access points, or The first station receives a seventh frame sent by the second access point, wherein the seventh frame is used for triggering the first station to perform C-BF transmission based on a precoding matrix, and the precoding matrix is determined based on uplink channel information fed back by a plurality of access points.
5. 5. The uplink cooperative beam forming C-BF method is characterized by comprising the following steps: A second access point sends a first frame, wherein the first frame is used for triggering at least one station to start an uplink channel detection flow, the at least one station comprises a first station, the first station is associated with a first access point, and the first access point and the second access point belong to a multi-access point cooperation set; The second access point receives a second frame sent by the first station, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information; And the second access point receives a third frame sent by the first station, wherein the third frame is used for channel estimation by the second access point to acquire uplink channel information.
6. 6. The uplink cooperative beam forming C-BF method is characterized by comprising the following steps: the second access point sends an eighth frame to the first access point, wherein the eighth frame is used for triggering the first access point to send a ninth frame, the ninth frame is used for triggering a station associated with the first access point to start an uplink channel detection flow, and the first access point and the second access point belong to a multi-access point cooperation set; the second access point receives a second frame sent by a first station, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information, and the first station is a station associated with the first access point; And the second access point receives a third frame sent by the first station, wherein the third frame is used for channel estimation by the second access point to acquire uplink channel information.
7. 7. The method according to claim 5 or 6, characterized in that the method further comprises: The second access point receives a fourth frame sent by the first station, wherein the fourth frame is used for triggering the first access point and the second access point to feed back uplink channel information; And the second access point sends a fifth frame to the first station, wherein the fifth frame comprises uplink channel information fed back by the second access point.
8. 8. The method according to any one of claims 5-7, further comprising: the second access point sends a fifth frame to the first station, wherein the fifth frame comprises uplink channel information fed back by the second access point; And the second access point sends a tenth frame to the first access point, wherein the tenth frame is used for triggering the first access point to feed back uplink channel information to the first station.
9. 9. The method according to any one of claims 5-8, further comprising: the second access point receives a sixth frame sent by the first station, wherein the sixth frame is used for indicating the first station to complete the collection of the uplink channel information, or The second access point receives an eleventh frame sent by the first access point, where the eleventh frame is used to instruct the first station to complete the collection of uplink channel information.
10. 10. The method according to any one of claims 5-9, further comprising: The second access point sends a seventh frame to the first station, wherein the seventh frame is used for triggering the first station to perform C-BF transmission based on a precoding matrix, the precoding matrix is determined based on uplink channel information fed back by a plurality of access points, or The second access point sends a twelfth frame to the first access point, wherein the twelfth frame is used for triggering the first access point to send a seventh frame to the first station, the seventh frame is used for triggering the first station to perform C-BF transmission based on a precoding matrix, and the precoding matrix is determined based on uplink channel information fed back by a plurality of access points.
11. 11. The uplink cooperative beam forming C-BF method is characterized by comprising the following steps: The method comprises the steps that a first access point receives an eighth frame sent by a second access point, the eighth frame is used for triggering the first access point to send a ninth frame, the ninth frame is used for triggering a station associated with the first access point to start an uplink channel detection flow, and the first access point and the second access point belong to a multi-access point cooperation set; The first access point sends a ninth frame to a first station, wherein the ninth frame is used for triggering the first station to start an uplink channel detection flow, and the first station is a station associated with the first access point; The first access point receives a second frame sent by the first station, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information; the first access point receives a third frame sent by the first station, and the third frame is used for channel estimation between the first access point and the second access point to obtain uplink channel information.
12. 12. The method of claim 11, wherein the method further comprises: The first access point receives a fourth frame sent by the first station, wherein the fourth frame is used for triggering the first access point and the second access point to feed back uplink channel information; And the first access point sends a fifth frame to the first station, wherein the fifth frame comprises uplink channel information fed back by the second access point.
13. 13. The method according to claim 11 or 12, characterized in that the method further comprises: The first access point receives a tenth frame sent by the second access point, wherein the tenth frame is used for triggering the first access point to feed back uplink channel information to the first station; And the first access point sends a fifth frame to the first station, wherein the fifth frame comprises uplink channel information fed back by the second access point.
14. 14. The method according to any one of claims 11-13, further comprising: the first access point receives a sixth frame sent by the first station, wherein the sixth frame is used for indicating the first station to finish the collection of uplink channel information; And the first access point sends an eleventh frame to the second access point, wherein the eleventh frame is used for indicating the first station to finish the collection of the uplink channel information.
15. 15. The method according to any one of claims 11-14, further comprising: The first access point receives a twelfth frame sent by the first access point, wherein the twelfth frame is used for triggering the first access point to send a seventh frame to the first station, the seventh frame is used for triggering the first station to perform C-BF transmission based on a precoding matrix, and the precoding matrix is determined based on uplink channel information fed back by a plurality of access points; The first access point transmits a seventh frame to the first station.
16. 16. The method according to any of claims 1-15, wherein the first frame comprises a common information field comprising at least one of: a first field, configured to indicate a collaboration type corresponding to the first frame; A second field for indicating a type of a receiving end of the first frame; a third field for indicating whether the first frame is triggered across an basic service set, BSS; A length field for indicating a transmission time length of a frame triggered by the first frame; and a length unit field, configured to indicate a unit corresponding to a transmission time length of the frame triggered by the first frame.
17. 17. The method according to any of claims 1-16, wherein the first frame comprises a user information list field comprising at least one of: A first identification field, configured to indicate a multi-access point cooperation set to which an associated access point of the station triggered by the first frame belongs; A second identification field, configured to indicate an associated access point of the station triggered by the first frame; a third identification field for indicating a station triggered by the first frame; a first indication field, configured to indicate that the receiving end of the first frame and the transmitting end of the first frame belong to the same BSS or that a BSS to which the receiving end of the first frame belongs and a BSS to which the transmitting end of the first frame belongs are OBSS; A second indication field, configured to indicate a transmission operation type corresponding to the first frame; And a third indication field, configured to indicate whether a reply is required to the first frame.
18. 18. The method according to any of claims 1-17, wherein the second frame comprises a user information list field for indicating a target access point feeding back uplink channel information.
19. 19. The method of claim 18, wherein the user information list field comprises: A first identification field, configured to indicate a multi-access point cooperation set to which a target access point feeding back uplink channel information belongs; and the second identification field is used for indicating a target access point for feeding back the uplink channel information.
20. 20. The method of claim 2, 7 or 12, wherein the fourth frame includes a user information list field for indicating a target access point that triggers feedback of uplink channel information.

Description

Uplink cooperative beam forming C-BF method, device and equipment Technical Field The present application relates to the field of communications, and in particular, to an uplink cooperative beamforming C-BF method, apparatus, and device. Background In the related art, cooperative beamforming (Coordinated Beamforiming, C-BF) is introduced in order to improve system Throughput (Area Throughput) and reduce delay. The access point may acquire downlink Channel State Information (CSI) through a channel sounding procedure of the downlink C-BF, for calculating a downlink precoding matrix. Specifically, the access point may send a Null DATA PACKET Antenna (NDPA) frame to instruct the station to feed back the downlink CSI, and further the access point may send a Null data packet (Null DATA PACKET, NDP) for the station to perform channel estimation to obtain the downlink CSI, and then the station reports the downlink CSI to the access point. However, the channel sounding process of the downlink C-BF cannot be directly used for channel sounding of the uplink C-BF, so how to implement the channel sounding process of the uplink C-BF for calculating the uplink precoding matrix, so as to ensure the transmission performance of the uplink C-BF is a problem to be solved. Disclosure of Invention The application provides a method, a device and equipment for uplink collaborative beamforming C-BF, which can realize uplink channel detection and ensure the transmission performance of uplink C-BF. In a first aspect, an uplink cooperative beamforming C-BF method is provided, applied to a first station associated with a first access point, including: the first station receives a first frame sent by a second access point, wherein the first access point and the second access point belong to a multi-access point cooperation set, and the first frame is used for triggering the first station to start an uplink channel detection flow; The first station sends a second frame, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information; And the first station sends a third frame which is used for carrying out channel estimation on the first access point and the second access point to acquire uplink channel information. In a second aspect, a method for uplink cooperative beamforming C-BF is provided, including: A second access point sends a first frame, wherein the first frame is used for triggering at least one station to start an uplink channel detection flow, the at least one station comprises a first station, the first station is associated with a first access point, and the first access point and the second access point belong to a multi-access point cooperation set; The second access point receives a second frame sent by the first station, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information; And the second access point receives a third frame sent by the first station, wherein the third frame is used for channel estimation by the second access point to acquire uplink channel information. In a third aspect, a method for uplink cooperative beamforming C-BF is provided, including: the second access point sends an eighth frame to the first access point, wherein the eighth frame is used for triggering the first access point to send a ninth frame, the ninth frame is used for triggering a station associated with the first access point to start an uplink channel detection flow, and the first access point and the second access point belong to a multi-access point cooperation set; the second access point receives a second frame sent by a first station, wherein the second frame is used for indicating the first access point and the second access point to feed back uplink channel information, and the first station is a station associated with the first access point; And the second access point receives a third frame sent by the first station, wherein the third frame is used for channel estimation by the second access point to acquire uplink channel information. In a fourth aspect, a method for uplink cooperative beamforming C-BF is provided, including: The method comprises the steps that a first access point receives an eighth frame sent by a second access point, the eighth frame is used for triggering the first access point to send a ninth frame, the ninth frame is used for triggering a station associated with the first access point to start an uplink channel detection flow, and the first access point and the second access point belong to a multi-access point cooperation set; The first access point sends a ninth frame to a first station, wherein the ninth frame is used for triggering the first station to start an uplink channel detection flow, and the first station is a station associated with the first access point; The first access point receives a second frame sent by the first station,