Wireless access point group-based calibration method and device, and computer storage medium

Patent metadata

Field	Value
Publication number	US-12294872-B2
Application number	US-202217696292-A
Country	US
Kind code	B2
Filing date	Mar 16, 2022
Priority date	Sep 17, 2019
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

Embodiments of this application disclose a group-based calibration method and device. The method includes: A control device that obtains path loss data of a wireless access point AP set, where the AP set includes a plurality of APs, and the path loss data includes a path loss between any two of the plurality of APs. The control device obtains a first calibration group based on the path loss data, and sends first calibration information to a management AP of the first calibration group, where the management AP of the first calibration group is an AP that performs calibration management in the first calibration group. By implementing the foregoing method, the control device may divide a plurality of APs into a plurality of calibration groups based on path loss data between the APs, to decrease a coupling degree between the calibration groups.

First claim

What is claimed is:

1. A wireless access point (AP) group-based calibration method comprising:
obtaining, by a control device, path loss data of a wireless AP set, wherein the AP set comprises a plurality of APs, and the path loss data comprises a path loss between any two of the plurality of APs;
obtaining, by the control device, a first calibration group based on the path loss data, wherein the first calibration group comprises a first AP and a second AP of the plurality of APs, wherein the obtaining the path loss data of the AP set comprises:
obtaining, by the control device, first path loss data, wherein the first path loss data is a path loss value between the first AP and the second AP that falls within a preset range and that is obtained at a third sampling moment;
obtaining, by the control device, second path loss data, wherein the second path loss data is a path loss value between the first AP and the second AP that falls within the preset range and that is obtained at a fourth sampling moment; and
obtaining, by the control device, path loss data between the first AP and the second AP based on the first path loss data and the second path loss data; and

sending, by the control device, first calibration information to a management AP of the first calibration group, wherein the first calibration information comprises an identifier of the first AP, an identifier of the second AP, and calibration sequence information for the management AP of the first calibration group to determine a calibration starting moment based on the calibration sequence information, and wherein the management AP of the first calibration group is an AP that performs calibration management in the first calibration group.

2. The method according to claim 1 , wherein before the sending, by the control device, first calibration information to a management AP of the first calibration group, the method further comprises:
obtaining, by the control device, load information of the first AP and load information of the second AP, wherein the load information of the first AP comprises load data of the first AP collected at a first sampling moment and load data of the first AP collected at a second sampling moment, the load information of the second AP comprises load data of the second AP collected at the first sampling moment and load data of the second AP collected at the second sampling moment, and the load data comprises at least one of a transmission rate, channel utilization, and a quantity of associated users;
obtaining, by the control device, a first load value based on a preset first algorithm, the load data of the first AP collected at the first sampling moment, and the load data of the first AP collected at the second sampling moment;
obtaining, by the control device, a second load value based on the preset first algorithm, the load data of the second AP collected at the first sampling moment, and the load data of the second AP collected at the second sampling moment; and
determining, by the control device, the management AP of the first calibration group from the first AP and the second AP based on the first load value and the second load value.

3. The method according to claim 1 , wherein the method further comprises:
obtaining, by the control device, a second calibration group and a third calibration group based on the path loss data, wherein the second calibration group comprises a third AP and a fourth AP of the plurality of Aps, and the third calibration group comprises a fifth AP and a sixth AP of the plurality of Aps; and
sending, by the control device, second calibration information to a management AP of the second calibration group and third calibration information to a management AP of the third calibration group, wherein the second calibration information comprises an identifier of the third AP and an identifier of the fourth AP, the management AP of the second calibration group is an AP that performs calibration management in the second calibration group, the third calibration information comprises an identifier of the fifth AP and an identifier of the sixth AP, and the management AP of the third calibration group is an AP that performs calibration management in the third calibration group.

4. The method according to claim 3 , wherein the method further comprises:
calculating, by the control device, a first coupling value, a second coupling value, and a third coupling value based on the first calibration group, the second calibration group, and the third calibration group, wherein the first coupling value is a sum of a coupling degree between the first calibration group and the second calibration group and a coupling degree between the first calibration group and the third calibration group, the second coupling value is a sum of a coupling degree between the second calibration group and the first calibration group and a coupling degree between the second calibration group and the third calibration group, and the third coupling value is a sum of a coupling degree between the third calibration group and the first calibration group and a coupling degree between the third calibration group and the second calibration group; and
obtaining, by the control device, a calibration sequence of the calibration sequence information based on the first coupling value, the second coupling value, and the third coupling value, wherein the calibration sequence is used to represent a sequence of calibrating the first calibration group, the second calibration group, and the third calibration group.

5. The method according to claim 4 , wherein the first calibration information further comprises the calibration sequence, information about the management AP of the second calibration group, and information about the management AP of the third calibration group.

6. The method according to claim 1 , wherein the obtaining, by the control device, path loss data between the first AP and the second AP based on the first path loss data and the second path loss data comprises:
using, by the control device, an average value of the first path loss data and the second path loss data as the path loss data between the first AP and the second AP; or
obtaining, by the control device, the path loss data between the first AP and the second AP based on the first path loss data, the second path loss data, and a weighted averaging algorithm.

7. The method according to claim 1 , wherein the obtaining, by the control device, a first calibration group based on the path loss data comprises:
grouping, by the control device, the first AP and the second AP into the first calibration group based on path loss data between any two of the plurality of Aps and a preset second algorithm, wherein the path loss data between any two Aps comprises the path loss data between the first AP and the second AP.

8. The method according to claim 1 , wherein the method further comprises:
receiving, by the control device, a calibration request sent by the management AP of the first calibration group, wherein the calibration request comprises an identifier of the management AP of the first calibration group and an identifier of an AP comprised in the first calibration group;
obtaining, by the control device based on the calibration request, path loss data of an AP set comprised in the first calibration group;
obtaining, by the control device, a fourth calibration group based on the path loss data of the AP set comprised in the first calibration group, wherein an AP set comprised in the fourth calibration group is a subset of the AP set comprised in the first calibration group; and
sending, by the control device, fourth calibration information to a management AP of the fourth calibration group, wherein the fourth calibration inf

Assignees

• Huawei Tech Co Ltd

Inventors

• Sun Fuqing
• Bao Dewei
• Bai Xiaofei
• Yu Juzheng
• Wei Qikun

Classifications

• H04W88/08

  Access point devices · CPC title

• H04W28/0236

  radio quality, e.g. interference, losses or delay · CPC title

• H04W16/08

  Load shedding arrangements · CPC title

• H04W40/32

  for defining a routing cluster membership · CPC title

• H04W28/0933

  based on load-splitting ratios · CPC title