CN-122002413-A - Communication method, device and storage medium

Abstract

The application discloses a communication method, a device and a storage medium, and belongs to the field of communication. The method is applied to a master access point of a communication system, the communication system further comprises a first slave access point and a second slave access point, a station is accessed to the first slave access point, the station is located in the coverage range of the second slave access point, the method comprises the steps of receiving a first roaming message, the first roaming message comprises context information of traffic transmitted between the station and the first slave access point, and sending a second roaming message to the second slave access point, wherein the second roaming message comprises the context information, and the context information is used for the second slave access point to transmit the traffic of the station. The application can avoid service interruption.

Inventors

• SUN YANBIN
• Chen Yunman
• WU XUMING

Assignees

• 华为技术有限公司

Dates

Publication Date

20260508

Application Date

20250226

Priority Date

20241104

Claims (20)

1. 1. A communication method, the method being applied to a master access point of a communication system, the communication system further comprising a first slave access point and a second slave access point, the first slave access point having a station access thereon, the station being located within a coverage area of the second slave access point, the method comprising: receiving a first roaming message, the first roaming message comprising context information for traffic transmitted between the station and the first slave access point; And sending a second roaming message to the second slave access point, wherein the second roaming message carries the context information, and the context information is used for the second slave access point to transmit the service of the station.
2. 2. The method of claim 1, wherein the receiving the first roaming message comprises: Transmitting an acquisition request message to the first slave access point in case that the station moves to be within the coverage of the second slave access point, wherein the acquisition request message is used for requesting the context information; And receiving an acquisition response message sent by the first slave access point, wherein the acquisition response message comprises the context information.
3. 3. The method of claim 1, wherein the receiving the first roaming message comprises: And receiving an update request message sent by the first slave access point under the condition that the station moves to be within the coverage range of the second slave access point, wherein the update request message comprises the context information.
4. 4. The method of any of claims 1-3, wherein the context information in the first roaming message includes one or more of key update information employed to transmit the service, a dormant state of the station, a sequence number of a first message in a send window, a sequence number of a last message in the send window, a sequence number of a first message in a receive window, a sequence number of a last message in the receive window, a bitmap of the receive window, or a sequence number of a message that the first slave access point did not send to the station; The traffic includes downlink traffic sent from the first slave access point to the station and/or uplink traffic received from the station by the first slave access point, the sending window is a window adopted by the first slave access point to send a message of the downlink traffic to the station, the receiving window is a window adopted by the first slave access point to receive a message of the uplink traffic from the station, and the bitmap is used for describing a receiving state of the message included in the receiving window.
5. 5. A method as in any of claims 1-3, wherein the communication system comprises a fiber-to-room FTTR system, the master access point is a master FTTR device comprised by the FTTR system, and the first slave access point and the second slave access point are slave FTTR devices comprised by the FTTR system.
6. 6. The method of any of claims 1-5, wherein the first roaming message is a service shutdown complete message and the second roaming message is a service start indication.
7. 7. The method of any of claims 1-6, wherein the context information includes at least one of a message sequence number, an identification of an IP message, and OMI status information of the station.
8. 8. A communication method, the method being applied to a master access point of a communication system, the communication system further comprising a first slave access point and a second slave access point, the first slave access point having a station access thereon, the station being located within a coverage area of the second slave access point, the method comprising: Receiving a third roaming message, the third roaming message including connection information for establishing a connection between the station and the first slave access point; And sending a fourth roaming message to the second slave access point, wherein the fourth roaming message comprises the connection information, and the connection information is used for establishing connection between the second slave access point and the station.
9. 9. The method of claim 8, wherein the connection information in the third roaming message includes one or more of aggregation information employed to transmit the service or key information employed to transmit the service.
10. 10. The method of claim 8 or 9, wherein the communication system comprises a fiber-to-room FTTR system, the master access point is a master FTTR device comprised by the FTTR system, and the first and second slave access points are slave FTTR devices comprised by the FTTR system.
11. 11. The method of any of claims 8-10, wherein the connection information in the third roaming message comprises one or more of a reassociation request message from the station received by the first slave access point, an association request message from the station received by the first slave access point, or an authentication request message from the station received by the first slave access point.
12. 12. The method of any of claims 11, wherein the third roaming message is an association request report message and the fourth roaming message is an association request down message.
13. 13. A communication method, wherein the method is applied to a second slave access point of a communication system, the communication system further comprising a master access point and a first slave access point, the first slave access point having a station access thereon, the station being located within a coverage area of the second slave access point, the method comprising: receiving a second roaming message sent by the master access point, wherein the second roaming message comprises context information of a service transmitted between the station and the first slave access point; And transmitting the service of the station based on the context information.
14. 14. The method of claim 13, wherein the context information includes one or more of key update information employed to transmit the service, a dormant state of the station, a sequence number of a first message in a transmission window, a sequence number of a last message in the transmission window, a sequence number of a first message in a reception window, a sequence number of a last message in the reception window, a bitmap of the reception window, or a sequence number of a message that the first slave access point did not send to the station; The traffic includes downlink traffic sent from the first slave access point to the station and/or uplink traffic received from the station by the first slave access point, the sending window is a window adopted by the first slave access point to send a message of the downlink traffic to the station, the receiving window is a window adopted by the first slave access point to receive a message of the uplink traffic from the station, and the bitmap is used for describing a receiving state of the message included in the receiving window.
15. 15. The method of claim 13, wherein the context information comprises at least one of a message sequence number, an identification of an IP message, sequence number SN context information, or OMI status information of the station.
16. 16. The method of claim 15, wherein the transmitting traffic for the station based on the context information comprises: Sending downlink message to the station according to the message sequence number, or Sending aggregate message to the station according to the SN context information, or And determining the channel bandwidth and the stream number according to the OMI state information of the station.
17. 17. The method of claim 14, wherein the transmitting traffic for the station based on the context information comprises: in the sleep state for indicating that the station is in the sleep state, waking the station, and/or, Determining the message to be transmitted belonging to the downlink service based on the sequence number of the first message in the transmission window, the sequence number of the last message in the transmission window and/or the sequence number of the message which is not transmitted to the station by the first slave access point, or Based on the sequence number of the first message in the receiving window, the sequence number of the last message in the receiving window, the bitmap of the receiving window, indicating the station to determine the message to be sent belonging to the uplink service, and/or, And encrypting the multicast data to be sent to the site based on the key updating information.
18. 18. A communication method, wherein the method is applied to a second slave access point of a communication system, the communication system further comprising a master access point and a first slave access point, the first slave access point having a station access thereon, the station being located within a coverage area of the second slave access point, the method comprising: receiving a fourth roaming message sent by the master access point, wherein the fourth roaming message comprises connection information for establishing connection between the station and the first slave access point; And transmitting the service of the station based on the connection information.
19. 19. The method of claim 18, wherein the connection information comprises one or more of a reassociation request message from the station received by the first slave access point, an association request message from the station received by the first slave access point, or an authentication request message from the station received by the first slave access point.
20. 20. The method of claim 19, wherein the transmitting traffic for the station based on the connection information comprises: And establishing a connection with the station based on the association request message, the re-association request message and the authentication request message, wherein the connection is used for transmitting the service of the station.

Description

Communication method, device and storage medium The present application claims priority to chinese patent application No. 202411565237.4, entitled "communication method, apparatus and storage medium" filed on 4/11/2024, and the present application claims priority to chinese patent application No. 202510042548.0, entitled "communication method, apparatus and storage medium" filed on 9/2025, the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of communications, and in particular, to a communication method, apparatus, and storage medium. Background A wireless local area network may include a plurality of access points that may provide access Services and Stations (STAs) located within the coverage area of the wireless local area network may access one access point. For ease of illustration, the access point is referred to as a first access point with which the STA may transmit traffic. In a wireless lan, an STA may move, and the STA may move from the coverage of a first access point currently accessed to the coverage of a second access point, at which time the STA may switch the access point accessed from the first access point to the second access point. After switching access to the second access point, the STA needs to resume transmission of the service at the second access point. However, in the related art, it takes a long time to resume transmission of the service at the second access point, which may cause interruption of the service. Disclosure of Invention The application provides a communication method, a device and a storage medium, which are used for avoiding service interruption. The technical scheme is as follows: In a first aspect, the present application provides a communication method applied to a master access point of a communication system, where the communication system further includes a first slave access point and a second slave access point, the first slave access point having a station access, the station being located within a coverage area of the second slave access point. In the method, a first roaming message is received, the first roaming message including context information for traffic transmitted between a station and a first slave access point. And sending a second roaming message to the second slave access point, wherein the second roaming message carries the context information of the service, and the context information is used for transmitting the service of the station by the second slave access point. As the station accesses the first slave access point and transmits traffic with the first slave access point. The station moves into the coverage area of the second slave access point, and the master access point can receive the first roaming message sent by the first slave access point and send the second roaming message to the second slave access point. Since the second roaming message includes the context information describing the traffic of the station and the traffic transmitted by the first slave access point, when the access point to which the station is accessed is switched from the first slave access point to the second slave access point, the traffic of the transmission station can be recovered on the second slave access point based on the context information, thereby avoiding interruption of the traffic of the transmission station and realizing seamless roaming. In one possible implementation, in case the station moves into the coverage area of the second slave access point, an acquisition request message is sent to the first slave access point, the acquisition request message being used to request the context information. And receiving an acquisition response message sent by the first slave access point, wherein the acquisition response message comprises the context information. In this way, the master access point can actively acquire the context information, and the mode and flexibility of acquiring the context information are enriched. In another possible implementation, in case the station moves into coverage of the second slave access point, an update request message sent by the first slave access point is received, the update request message comprising the context information. Thus, the main access point can passively receive the context information, and the mode and flexibility of acquiring the context information are enriched. In another possible implementation, the context information in the first roaming message includes one or more of key update information employed by the transport service, a dormant state of the station, a sequence number of a first message in the transmission window, a sequence number of a last message in the transmission window, a sequence number of a first message in the reception window, a sequence number of a last message in the reception window, a bitmap of the reception window, or a sequence number of a message that is not sent from the access point