CN-122002486-A - Access point energy saving method, device, equipment and system in WLAN

Abstract

The application provides an energy-saving method, device, equipment and system for an access point in a WLAN, and belongs to the technical field of communication. The method is applied to a first access point, the first access point is connected with a second access point in the WLAN, a state machine of the second access point is maintained, the state machine records at least one energy-saving state, and after the first access point controls the second access point to enter the energy-saving state, the state of the second access point is switched into the energy-saving state in the state machine. In the energy saving process, the access point with centralized control uses a state machine to maintain the states of other access points, so that the process of maintaining the states can be simplified.

Inventors

• Xiao Houfei
• LI XIN
• ZHANG XIAOLONG

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20250520

Priority Date

20241104

Claims (20)

1. 1. A method for power saving of an access point in a wireless local area network WLAN, applied to a first access point, the first access point being connected to at least one other access point, the first access point maintaining a state machine of a second access point in the at least one other access point, the state machine having at least one power saving state recorded therein, the method comprising: Transmitting an energy-saving control message to the second access point, wherein the energy-saving control message is used for indicating the second access point to enter a first energy-saving state; in the state machine, the state of the second access point is switched to the first power saving state.
2. 2. The method of claim 1, wherein the state machine records a state corresponding to one or more of a basic service set identifier, a service set identifier, or a frequency band of the second access point.
3. 3. The method according to claim 1 or 2, wherein the state machine also records an operating state and a power saving ready state, the second access point being in the operating state before sending a power saving control message to the second access point; Before sending the energy-saving control message to the second access point, the method further comprises: and in the state machine, switching the state of the second access point from the working state to the energy-saving preparation state.
4. 4. A method according to claim 3, characterized in that before switching the state of the second access point from the operating state to the power saving ready state in the state machine, further comprises: and receiving an energy-saving request sent by the second access point.
5. 5. The method of claim 4, further comprising, after receiving the power save request sent by the second access point: And sending an energy-saving indication message to the second access point, wherein the energy-saving indication message is used for indicating the second access point to save energy.
6. 6. The method according to any one of claims 1 to 5, wherein the state machine also records an operating state and/or a power saving readiness state; The method further comprises the steps of: And responding to the second access point to exit from the energy-saving state, and switching the state of the second access point into the working state or the energy-saving preparation state in the state machine.
7. 7. The method of claim 6, wherein the method further comprises: Receiving an energy saving exit request sent by the second access point, wherein the energy saving exit request is used for indicating the second access point to exit the energy saving state, or Determining that the second access point exits the energy-saving state according to the energy-saving statistical information of the second access point, or And determining that the second access point exits the energy-saving state according to the energy-saving statistical information of the second access point and a third access point, wherein the third access point is an access point in the at least one other access point or the first access point.
8. 8. The method according to any one of claims 1 to 7, further comprising: receiving a target state sent by the second access point; in the state machine, responsive to the state of the second access point not being the target state, switching the state of the second access point to the target state.
9. 9. The method of claim 8, further comprising, prior to receiving the target state sent by the second access point: And sending a state query request to the second access point.
10. 10. The method of claim 9, wherein the receiving the target state sent by the second access point comprises: Receiving the target state sent by the second access point after the state is switched, wherein the target state is the state after the switching, and/or, And receiving the target state periodically sent by the second access point.
11. 11. The method according to any of claims 1 to 10, wherein the state of the second access point is a second power saving state before sending a power saving control message to the second access point.
12. 12. The method according to any of claims 1 to 11, wherein the energy saving control message comprises one or more of a frequency band, a basic service set identifier or a service set identifier of the second access point.
13. 13. The method according to any of claims 1 to 12, wherein the energy saving control message comprises energy saving level information of the second access point.
14. 14. The method of claim 13, wherein the power level information comprises an identification of a power level, or wherein the power level information comprises one or more of a power level policy of a WLAN network, a power level policy of a functional module, or a power level policy of a peripheral interface.
15. 15. The method according to any one of claims 1 to 14, further comprising, prior to sending a power save control message to the second access point: Determining the energy-saving state of the second access point according to the energy-saving statistical information of the second access point, or And determining the energy-saving state of the second access point according to the energy-saving statistical information of the second access point and a third access point, wherein the third access point is an access point in the at least one other access point or the first access point.
16. 16. The method of claim 15, wherein the energy saving statistics include one or more of site information, traffic flow information, temperature information, or traffic status information.
17. 17. The method according to any one of claims 1 to 16, further comprising, prior to sending a power save control message to the second access point: And receiving an energy-saving capability message sent by the second access point, wherein the energy-saving capability message is used for indicating the energy-saving capability of the second access point.
18. 18. The method of any one of claims 1 to 17, wherein the first access point is connected to the at least one other access point by an optical fiber.
19. 19. The method of claim 18, wherein the first access point is a main optical network unit in a fiber-to-room system and the at least one other access point is a sub-optical network unit in the fiber-to-room system.
20. 20. A method for power saving of an access point in a wireless local area network WLAN, the method being applied to a second access point, the second access point being connected to a first access point, the first access point maintaining a state machine of the second access point, the state machine having at least one power saving state recorded therein, the method comprising: Receiving an energy-saving control message sent by the first access point, wherein the energy-saving control message is used for indicating the second access point to enter a first energy-saving state in the at least one energy-saving state; an operation to enter the first power saving state is performed.

Description

Access point energy saving method, device, equipment and system in WLAN The present application claims priority from chinese patent application with application number 202411566823.0, application number "method, apparatus, device and system for power saving for access point in WLAN" and application number 2025, application number 01, application number 09, application number 202510039280.5, application number "method, apparatus, device and system for power saving for access point in WLAN", all of which are incorporated herein by reference. Technical Field The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a system for saving energy of an access point in a WLAN. Background Wireless local area networks (wireless local area network, WLAN) are becoming more and more popular, and WLAN includes Stations (STAs) and Access Points (APs), and there is currently a station's power saving scheme, but no access point's power saving scheme. And as the number of access points and functions increase, the power consumption problem thereof becomes prominent, and thus, it is necessary to provide a scheme for reducing the power consumption of the access points in order to reduce the overall power consumption of the WLAN. Disclosure of Invention The application provides an energy-saving method, device, equipment and system for an access point in WLAN, which can reduce the power consumption of the access point. The technical scheme adopted is as follows: In a first aspect, the application provides an energy saving method for an access point in a WLAN, the method is applied to a first access point, the first access point is connected with at least one other access point, the first access point maintains a state machine of a second access point in the at least one other access point, the state machine records at least one energy saving state, the method comprises the steps of sending an energy saving control message to the second access point, wherein the energy saving control message is used for indicating the second access point to enter a first energy saving state, and the state machine switches the state of the second access point into the first energy saving state. In the scheme shown in the application, the WLAN comprises a first access point and at least one other access point, the first access point is connected with the at least one other access point in the WLAN, and a state machine of a second access point in the at least one other access point is maintained in the first access point. The first access point determines a power save state of a second access point connected thereto, instructs the second access point to enter the power save state, and switches the state of the second access point in a state machine. Since the first access point can instruct the second access point to perform power saving, power consumption of the second access point can be reduced. And the first access point adopts a state machine to maintain the state of the second access point, so that the interaction cost can be reduced. In an alternative manner, the second access point performs energy saving according to an energy saving object, where the energy saving object includes one or more of a basic service set identifier (basic SERVICE SET IDENTIFIER, BSSID) service set identifier (SERVICE SET IDENTIFIER SSID) or a frequency band, and a state corresponding to the energy saving object is also recorded in the state machine. In this way, the state of recording can be made to correspond to the energy saving object according to the state of recording of the energy saving object. In an alternative manner, the state machine also records an operating state and a power saving preparation state, if the second access point is in the operating state before sending the power saving control message to the second access point, then in the state machine, the state of the second access point is switched from the operating state to the power saving preparation state, and then the power saving control message is sent to the second access point. In this way, the second access point can be brought from the power saving ready state into the power saving state. Optionally, the first access point may further send a power save ready indication message to the second access point, where the power save ready indication message is used to instruct the second access point to enter a power save ready state, so that the second access point performs a power save ready operation. Alternatively, the energy saving mode may be switched from the energy saving ready state to the operating state while the energy saving mode is turned off. In an alternative manner, the first access point receives the power saving request sent by the second access point before instructing the second access point to enter the power saving state. In this way, the second access point is more aware of its current condition