WO2022188044A1

WO2022188044A1 - Communication method and communication apparatus under multiple links

Info

Publication number: WO2022188044A1
Application number: PCT/CN2021/079841
Authority: WO
Inventors: 董贤东
Original assignee: 北京小米移动软件有限公司
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2022-09-15
Also published as: CN115398981A

Abstract

Provided in the present disclosure are a communication method and communication apparatus under multiple links. The communication method can comprise: determining a first message frame; and sending the first message frame under a first link in multiple links, wherein the first message frame comprises first information, and the first information comprises a first change sequence identifier related to a system information change of an access point corresponding to the first link. By means of the technical solution provided in the embodiments of the present disclosure, the requirements for multi-link communication can be met, and the spectrum utilization rate can be improved.

Description

Communication method and communication device under multi-connection

technical field

The present disclosure relates to the field of communication, and more particularly, to a communication method and communication device under multiple connections.

Background technique

The current research scope of Wi-Fi technology is: 320MHz bandwidth transmission, aggregation and coordination of multiple frequency bands, etc. It is expected to increase the rate and throughput by at least four times compared with the existing standards. The main application scenarios are: Video transmission, AR (Augmented Reality, augmented reality), VR (Virtual Reality, virtual reality), etc.

The aggregation and collaboration of multiple frequency bands refers to the simultaneous communication between devices in the frequency bands of 2.4GHz, 5GHz and 6-7GHz. For the simultaneous communication between devices in multiple frequency bands, a new MAC (Media Access Control) needs to be defined. ) mechanism to manage. In addition, it is also expected that the aggregation and coordination of multiple frequency bands can support low-latency transmission.

The current multi-band aggregation and system technology will support a maximum bandwidth of 320MHz (160MHz+160MHz), and may also support 240MHz (160MHz+80MHz) and other bandwidths.

In the current technology, a station (STA: Station) and an access point (AP: Access Point) can be a multi-link device (MLD: multi-link device), that is, it supports the ability to send and receive messages simultaneously under multiple connections at the same time. / or receive function. Therefore, in the current technology, there may be multiple connections between the STA and the AP, and the communication of these two devices under the multiple connections is studied. Specifically, research is being conducted on a case where the system information of an access point supporting multi-connection communication changes.

SUMMARY OF THE INVENTION

Aspects of the present disclosure are to address at least the above-mentioned problems and/or disadvantages. Various embodiments of the present disclosure provide the following technical solutions:

An exemplary embodiment according to the present disclosure provides a communication method under multiple connections. The communication method can be applied to a station supporting multi-connection communication, and includes: determining a first message frame; sending a first message frame under a first connection in the multi-connection, wherein the first message frame includes first information , the first information includes a first change sequence identifier related to the change of the system information of the access point corresponding to the first connection.

An exemplary embodiment according to the present disclosure provides a communication method under multiple connections. The communication method can be applied to an access point supporting multi-connection communication, and includes: receiving a first message frame under a first connection in the multi-connection, wherein the first message frame includes first information, and the first message frame includes first information. One piece of information includes a first change sequence identifier related to the change of the system information of the access point corresponding to the first connection; and based on the first message frame, a corresponding communication operation is performed.

An exemplary embodiment according to the present disclosure provides a communication method under multiple connections. The communication method can be applied to a station supporting multi-connection communication, and includes: receiving a seventh message frame under a first connection in the multi-connection, wherein the seventh message frame includes a frame corresponding to the first connection The changed system information of the access point; based on the seventh message frame, perform a corresponding communication operation.

An exemplary embodiment according to the present disclosure provides a communication method under multiple connections. The communication method can be applied to an access point supporting multi-connection communication, and includes: determining a seventh message frame; sending a seventh message frame under a first connection in the multi-connection, wherein the seventh message frame System information including changes to the access point corresponding to the first connection.

An exemplary embodiment according to the present disclosure provides a multi-connection communication device. The communication device can be applied to a station supporting multi-connection communication, and includes: a processing module configured to: determine a first message frame; a transceiver module configured to: send a first message frame under the first connection in the multi-connection A message frame, wherein the first message frame includes first information, and the first information includes a first change sequence identifier related to the change of the system information of the access point corresponding to the first connection.

An exemplary embodiment according to the present disclosure provides a multi-connection communication device. The communication apparatus can be applied to an access point supporting multi-connection communication, and includes a transceiver module configured to: receive a first message frame under a first connection in the multi-connection, wherein the first message The frame includes first information, and the first information includes a first change sequence identifier related to the change of the system information of the access point corresponding to the first connection; the processing module is configured to: based on the first message frame , and perform the corresponding communication operation.

An exemplary embodiment according to the present disclosure provides a multi-connection communication device. The communication apparatus may be applied to a station supporting multi-connection communication, and includes: a transceiver module configured to: receive a seventh message frame under a first connection in the multi-connection, wherein the seventh message frame includes Changed system information of the access point corresponding to the first connection; the processing module is configured to: perform a corresponding communication operation based on the seventh message frame.

An exemplary embodiment according to the present disclosure provides a multi-connection communication device. The communication device can be applied to an access point supporting multi-connection communication, and includes: a processing module configured to: determine a seventh message frame; a transceiver module configured to: under the first connection in the multi-connection A seventh message frame is sent, wherein the seventh message frame includes the changed system information of the access point corresponding to the first connection.

An electronic device is provided according to example embodiments of the present disclosure. The electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor. The processor executes the computer program to implement the method as described above.

A computer-readable storage medium is provided according to example embodiments of the present disclosure. A computer program is stored on the computer-readable storage medium. The computer program, when executed by a processor, implements the method as described above.

The technical solutions provided by the exemplary embodiments of the present disclosure can meet the multi-connection communication requirements and improve the spectrum utilization rate.

Description of drawings

The above and other features of the embodiments of the present disclosure will become more apparent by describing in detail the example embodiments of the present disclosure with reference to the accompanying drawings, wherein:

FIG. 1 is an exemplary diagram illustrating a communication scenario under multiple connections.

FIG. 2 is a flowchart illustrating a communication method according to an embodiment.

FIG. 3 is a detailed flowchart illustrating a communication method according to an embodiment.

FIG. 4 is a schematic diagram illustrating interactive communication according to the embodiment shown in FIG. 3 .

FIG. 5 is another detailed flowchart illustrating a communication method according to an embodiment.

FIG. 6 is a schematic diagram illustrating interactive communication according to the embodiment shown in FIG. 5 .

FIG. 7 is a flowchart illustrating another communication method according to an embodiment.

FIG. 8 is a flowchart illustrating another communication method according to an embodiment.

FIG. 9 is a schematic diagram illustrating interactive communication of the embodiment of the communication method shown in FIG. 8 .

FIG. 10 is a schematic diagram illustrating interactive communication of another embodiment of the communication method shown in FIG. 8 .

FIG. 11 is a flowchart illustrating another communication method according to an embodiment.

12 is a block diagram illustrating a communication apparatus according to an embodiment.

Detailed ways

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the present disclosure as defined by the appended claims and their equivalents. Various embodiments of the present disclosure include various specific details, which are to be regarded as merely exemplary. Also, descriptions of well-known techniques, functions, and constructions may be omitted for clarity and conciseness.

The terms and words used in this disclosure are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the present disclosure. Accordingly, the descriptions of various embodiments of the present disclosure are provided for purposes of illustration and not of limitation to those skilled in the art.

It should be understood that the singular forms "a", "an", "the" and "the" as used herein can also include the plural forms unless the context clearly dictates otherwise. It should be further understood that the word "comprising" as used in this disclosure refers to the presence of the described features, integers, steps, operations, elements and/or components, but does not preclude the presence or addition of one or more other features, integers , steps, operations, elements, components and/or groups thereof.

It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element discussed below could be termed a second element without departing from the teachings of example embodiments. Further, as used herein, the term "and/or" or the expression "at least one/at least one of" includes any and all combinations of one or more of the associated listed items.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

In a wireless local area network, a basic service set (BSS) may consist of an AP and one or more stations (STA) that communicate with the AP. A basic service set can be connected to the distribution system DS (Distribution System) through its AP, and then connected to another basic service set to form an extended service set ESS (Extended Service Set).

AP is a wireless switch for wireless network, and it is also the core of wireless network. AP equipment can be used as a wireless base station, mainly used as a bridge for connecting wireless networks and wired networks. With this access point AP, wired and wireless networks can be integrated.

The AP may include software applications and/or circuitry to enable other types of nodes in the wireless network to communicate with the outside and inside of the wireless network through the AP. In some examples, as an example, the AP may be a terminal device or a network device equipped with a Wi-Fi (Wireless Fidelity, wireless fidelity) chip.

By way of example, a station (STA) may include, but is not limited to, cellular phones, smart phones, wearable devices, computers, personal digital assistants (PDAs), personal communication system (PCS) devices, personal information managers (PIMs), personal navigation Devices (PND), Global Positioning Systems, Multimedia Devices, Internet of Things (IoT) devices, etc.

In an example embodiment of the present disclosure, APs and STAs may support multi-connected devices, for example, may be denoted as AP MLD and non-AP STA MLD, respectively. For convenience of description, hereinafter, an example in which one AP MLD communicates with one non-AP STA MLD under multiple connections is mainly described, however, exemplary embodiments of the present disclosure are not limited thereto.

In FIG. 1, only as an example, the AP MLD may represent an access point supporting the multi-connection communication function, and the non-AP STA MLD may represent a station supporting the multi-connection communication function. Referring to Figure 1, the AP MLD can work under three connections. As shown in Figure 1, the AP MLD includes the auxiliary access points AP1, AP2 and AP3, which can correspond to three connections respectively; the non-AP STA MLD can also work in the Under three connections, as shown in Figure 1, the affiliated stations STA1, STA2 and STA3 included in the non-AP STA MLD may correspond to three connections respectively. In the example of FIG. 1 , it is assumed that AP1 and STA1 communicate through a corresponding first connection Link 1, and similarly, AP2 and AP3 communicate with STA2 and STA3 through a second connection Link 2 and a third connection Link 3, respectively. In addition, Link 1 to Link 3 may be multiple connections at different frequencies, for example, connections at 2.4GHz, 5GHz, 6GHz, etc., or several connections at 2.4GHz, 5GHz, 6GHz with the same or different bandwidths. Furthermore, multiple channels can exist under each connection. However, it should be understood that the communication scenario shown in FIG. 1 is only exemplary, and the inventive concept is not limited thereto, for example, an AP MLD may be connected to a plurality of non-AP STA MLDs, or under each connection, an AP Can communicate with several other types of sites.

If the system information (SI, system information) of the access point or the critical update (critical update) information of the basic service set (BSS: Basic service set) changes, the access point can set the carry in, for example, a beacon (beacon) frame. Change the value of the change sequence field. If the value of the change sequence field received by the site is different from the value received last time, it means that the system information has changed. The station can obtain the changed system information in two ways: In one method, the station receives the DTIM (Data pending indication transfer, Delivery Traffic Indication Map) beacon frame broadcast by the AP, and the DTIM beacon frame carries the changed system information. In another method, the station sends a probe request (probe request) frame, and the access point replies with a compressed probe response (probe response) frame that carries the changed system information. However, in the prior art, these two methods only involve a single-connection communication scenario, and are not applicable to the multi-connection communication scenario described with reference to FIG. 1 , so it needs to be improved.

In the case of multiple connections between the access point and the site, since the access point and the site can communicate under multiple connections, if the system information of the AP MLD changes, it can be reported through, for example, Reduced Neighbor Report (Reduced Neighbor Report). report) information element broadcast out. For example, the Change Sequence field of one AP of the same AP MLD can be carried in the reduced neighbor report information element; the Change Sequence field of each AP in other APs of the same AP MLD can be carried in the simplified neighbor report corresponding to the one AP. In the multi-connection device parameters (MLD Parameters) subfield of the TBTT (target beacon transmission time) information field of the neighbor report information element. In the above-mentioned embodiments, although the method for the AP MLD to identify the SI changes when the SI changes is described, it lacks the SI or Basic Service Set (BSS: Basic service) that the access point notifies the station of the change in the case of multi-connection communication. The specific implementation of the critical update (critical update) information of the set). To this end, a communication method and a communication apparatus according to example embodiments of the inventive concept are provided.

FIG. 2 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. The communication method shown in FIG. 2 can be applied to a station supporting multi-connection communication (non-AP STA MLD).

Referring to FIG. 2, in operation 210, a first message frame may be determined. In operation 220, a first message frame may be sent under a first connection in the multiple connections. According to an embodiment, a multi-connection may refer to a plurality of connections established between the AP MLD and the non-AP STA MLD capable of communicating. According to an embodiment, the first message frame may be determined under the first connection for transmitting the first message frame, however, the present disclosure is not limited thereto, for example, determining the first message frame and transmitting the first message frame may be under different connections proceed below. According to an embodiment, the first message frame may include first information, and the first information may include a first change sequence identifier related to a system information change of the access point corresponding to the first connection. According to an embodiment, the first change sequence identification may be used to instruct the access point to send changed system information or key update information of a basic service set (BSS).

As an example, the first message frame may be a probe request frame or a multi-link (ML, multi-link) probe request frame, the first information may be a probe request frame or an ML information element in an ML probe request frame, and the first change sequence The identifier may be the change sequence field in the ML information element. According to an embodiment of the present disclosure, the communication method shown in FIG. 2 may be an operation performed after the station determines that the system information of the access point corresponding to the first connection has changed. For example, before operation 210, the station may receive a beacon frame from the access point, and determine that the system information of the access point has changed according to the change sequence field in the beacon frame, however, since the station, for example, after a certain period of time has elapsed Changed system information or critical updates to the Basic Service Set (BSS) have not been received from the access point, so the station proactively interrogates by carrying the change sequence field in the probe request.

According to an embodiment of the present disclosure, a change in the system information of an access point may indicate that a critical update occurs to an element in the beacon frame, for example, at least one of the following events may be classified as a critical update:

a) Inclusion of a Channel Switch Announcement element

b) Inclusion of an Extended Channel Switch Announcement element (Inclusion of an Extended Channel Switch Announcement element)

c) Modification of the EDCA parameters element

d) Inclusion of a Quiet element

e) Modification of the DSSS Parameter Set

f) Modification of the HT Operation element

g) Inclusion of a Wide Bandwidth Channel Switch element

h) Inclusion of a Channel Switch Wrapper element

i) Inclusion of an Operating Mode Notification element

j) Inclusion of a Quiet Channel element

k) Modification of the VHT Operation element, etc.

When at least one of the events shown above occurs, the system information changes. For example, the AP can increase the value of the Check Beacon field in the next transmitted data pending indication (TIM) frame ( modulo 256). In addition, it will be understood that the events shown above are only exemplary, and embodiments of the present disclosure are not limited thereto, and other system information events are possible, such as, for example, Modification of the EHT Operation element , Modification of the HE Operation element, Insertion of a Broadcast TWT element, Inclusion of the BSS Color Change Announcement element, MU EDCA parameter set element Modification of the MU EDCA Parameter Set element, Modification of the Spatial Reuse Parameter Set element, Modification of the UORA Parameter Set element, etc.

In operation 210, the station may determine the first message frame according to various manners. For example, the first message frame may be determined from a beacon frame previously received from the corresponding access point. For example, the station may determine the first change sequence identifier in the first message frame to be a value different from the value of the change sequence field in the received beacon frame. When the access point receives the first message frame, it can determine whether it needs to send the changed system information or the key update information of the basic service set (BSS) to the station according to the value of the change sequence field carried in the first message frame. The message description will be made below. Hereinafter, for the convenience of description, the system information is used as an example for description, however, the present disclosure is not limited thereto, and the example about the system information may also be applied to the key update information of the Basic Service Set (BSS).

FIG. 2 describes the operation when the system information of the access point corresponding to the first connection in the multi-connection changes, and for the case where the system information of the access point corresponding to the other connections in the multi-connection changes, you can There are two implementations, which will be described in detail below with reference to FIGS. 3 to 6 .

FIG. 3 is a detailed flowchart illustrating a communication method according to an embodiment, and FIG. 4 is a schematic diagram illustrating interactive communication according to the embodiment illustrated in FIG. 3 .

In step 310, a fourth message frame may be received under the first connection and another connection different from the first connection, respectively, wherein the fourth message frame may include a message indicating that the system information of the access point of the corresponding connection has changed Information ID. As an example, the fourth message frame may be a beacon frame broadcast by an AP under the corresponding connection, and the information identifier may be a change sequence (change sequence) field carried in the beacon frame. 4 , as an example, the first connection may be used for communication between the station STA1 of the non-AP STA MLD and the access point AP1 of the AP MLD, for example, the first connection may be the first connection Link1 shown in FIG. 1 ; The other connection can be used for communication between the station STA2 of the non-AP STA MLD and the access point AP2 of the AP MLD, for example, the other connection can be the second connection Link2 shown in FIG. 1 . Step 310 of FIG. 3 may correspond to operations S410_1 and S410_2 of FIG. 4 , that is, under the first connection Link1, STA1 may receive a fourth message frame (eg, a beacon) sent by the access point AP1 corresponding to the first connection Link1 frame); under another connection Link2, STA2 may receive a fourth message frame (eg, a beacon frame) sent by the access point AP2 corresponding to the other connection Link2, and operations S410_1 and S410_2 may be performed in parallel. In addition, the fourth message frame (for example, a beacon frame) received by STA1 may carry an information identifier indicating that the system information of the access point AP1 connected to Link1 first changes, for example, the change sequence field related to AP1; STA2 The received fourth message frame (for example, a beacon frame) may carry an information identifier indicating that the system information of another access point AP2 connected to Link2 has changed, for example, a change sequence field related to AP2. As an example, the carried information identifier (change sequence field) may be included in the reduced neighbor report information element (RNRE, Reduced Neighbor Report element) of the fourth message frame (beacon frame).

It will be understood that step S310 of FIG. 3 and operations S410_1 and S410_2 of FIG. 4 are only exemplary, and the communication method according to the embodiment may further include: performing under another other connection between the non-AP STA MLD and the AP MLD Similar operations are omitted here for brevity.

When the corresponding stations (for example, STA1 and STA2 in FIG. 4 ) receive the corresponding fourth message frame (beacon), the corresponding access can be determined according to the information identifier (change sequence field) carried in the fourth message frame Whether the system information of the point has changed. For example, when the corresponding station determines that the value of the information identifier (change sequence field) received this time is different from the value of the previously received information identifier (change sequence field), it can be determined that the corresponding access point has occurred. Variety. If the corresponding station does not receive the changed system information sent by the corresponding access point after a certain period of time, for example, steps 320 to 340 may be performed.

In step 320, a first message frame (eg, a probe request frame or an ML probe request frame) may be sent under the first connection. According to an embodiment, the first message frame (probe request frame or ML probe request frame) may carry a first change sequence identifier (change sequence field) related to the system information change of the access point AP1 corresponding to the first connection Link1. That is, the first message frame sent under the first connection may include a change sequence identifier (for example, a change sequence field) related to the change of the system information of the access point corresponding to the current connection (the first connection Link1). According to an embodiment, the first change sequence identifier may be used to instruct the access point corresponding to the first connection to send changed system information. Step 320 may correspond to operation S420_1 of FIG. 4 . According to an embodiment, the value of the change sequence field carried in the first message frame sent in operation S420_1 may be different from the change sequence field carried in the fourth message frame received in operation S410_1. Therefore, when the access point AP1 receives the first message frame, it may determine to send the changed system information to the station STA1 according to the first change sequence identifier (change sequence field) (operation S430_1).

In addition, step 320 and operation S420_1 may correspond to step 220 of FIG. 2 , and in order to avoid redundancy, repeated descriptions are omitted here.

In step 330, a second message frame may be sent under another connection. The second message frame may include another change sequence identifier related to the system information change of the access point corresponding to the other connection. Step 330 may correspond to operation S420_2 of FIG. 4 , as an example, the second message frame may be a probe request frame or an ML probe request frame, and the other change sequence identifier may be an ML included in the probe request frame or the ML probe request frame. The change sequence field of the information element. That is, the second message frame sent under another connection may include a change sequence identifier (for example, a change sequence field) related to the change of the system information of the access point corresponding to the current connection (the other connection Link2). According to an embodiment, the other change sequence identifier may be used to instruct the access point corresponding to another connection to send the changed system information. According to an embodiment, the value of the change sequence field carried in the second message frame sent in operation S420_2 may be different from the change sequence field carried in the fourth message frame received in operation S410_2. That is, when the access point AP2 receives the second message frame, it may determine, according to the other change sequence identifier (change sequence field), that the changed system information needs to be sent (operation S430_2).

In addition, the value of the change sequence field carried in the first message frame sent in operation S420_1 and the value of the change sequence field carried in the second message frame sent in operation S420_2 may be the same or different, which are not specifically limited in the present disclosure .

In step S340, the corresponding station may receive a third message frame under the first connection and another connection, respectively, wherein the third message frame includes system information or basic service set (BSS) indicating the change of the access point of the corresponding connection. ) key updates. As an example, the third message frame may be a compressed probe response frame or an ML probe response frame. Considering that the access point has determined that the changed system information needs to be sent to the station, in order to save resources, the access point may send the system information mainly including the change A compressed probe response frame or ML probe response frame of information or key update information of the Basic Service Set (BSS), rather than a general probe response frame or ML probe response frame that also contains a lot of other information. It can be understood that step S340 may correspond to operations S430_1 and S430_2 of FIG. 4 . Specifically, under the first connection Link1, the station STA1 may receive a third message frame (compressed probe response frame or ML probe response frame) containing the changed system information of AP1 from the corresponding access point AP1; in another connection Under Link2, the station STA2 may receive a third message frame (compressed probe response frame or ML probe response frame) containing AP2's changed system information from the corresponding access point AP2. It will be appreciated that step 320 and step 330 may be performed in parallel, operations S420_1 and S420_2 may be performed in parallel, and operations S430_1 and S430_2 may be performed in parallel.

When the corresponding station of the non-AP STA MLD determines that the system information of the corresponding connected access point changes, the communication method described in FIG. 3 and FIG. 4 can be performed, that is, the non-AP STA MLD can be sent separately under each connection. A probe request frame or an ML probe request frame (carrying a change sequence information element), and a compressed probe response frame or an ML probe response frame replied by the AP MLD can be received under each connection, respectively.

FIG. 5 is another detailed flowchart illustrating the communication method according to the embodiment, and FIG. 6 is a schematic diagram illustrating the interactive communication according to the embodiment shown in FIG. 5 .

In step 510, a sixth message frame may be received under the first connection. According to an embodiment, the sixth message frame may include second information, and the second information may include an information identifier indicating that the system information of the access point corresponding to the first connection has changed. In addition, the second information may further include: an information identifier indicating that the system information of the access point corresponding to other connections different from the first connection has changed. Step 510 may correspond to operation S610 of FIG. 6 , as an example, the sixth message frame may be a beacon frame broadcast by an access point corresponding to the first connection, and the second information may be abbreviated neighbor report information in the beacon frame element, the information identifier can be the change sequence field in the reduced neighbor report information element. Different from the respective fourth message frames in the above step 310 and operations S410_1 and S410_2, the sixth message frame received under the first connection may not only include access points corresponding to the present connection (eg, the first connection) The information identifier that the system information of the access point changes, and may also include the information identifier that the system information of the access point corresponding to other connections changes. In this case, the second information of the sixth message frame may further include a connection identifier, so as to indicate which connection the corresponding information identifier corresponds to.

In operation 520, a first message frame may be sent under the first connection. According to an embodiment of the present disclosure, the first message frame may include first information, and the first information may include a first change sequence identifier related to a change in system information of an access point corresponding to the first connection. In addition, the first information may further include: other change sequence identifiers related to system information changes of access points corresponding to other connections different from the first connection. As an example, the first message frame may be a probe request frame or an ML probe request frame, the first information may be a probe request frame or an ML information element in an ML probe request frame, and the first change sequence identifier and other change sequence identifiers may be The change sequence field in the ML information element of a probe request frame or ML probe request frame. As an example, the first connection may be the connection that receives the sixth message frame (beacon frame), for example, may be Link1 shown in FIG. 1 . However, the present disclosure is not limited thereto, and the first connection may be different from the connection that received the sixth message frame (beacon frame), and may be any connection among multiple connections that have been established between the non-AP STA MLD and the AP MLD. In addition, other connections different from the first connection may be connections in which the system information of access points other than the first connection Link1 in the established multi-connection has changed, for example, Link2 and/or Link3 shown in FIG. 1 . Wait.

Different from step 320 and operations S420_1 and S420_2, in step 520 of FIG. 5 and operation S620 of FIG. 6 , the first message frame sent under the first connection may not only include the connection corresponding to the current connection (the first connection). The first change sequence identifier related to the system information change of the ingress point may also include other change sequence identifiers related to the system information change of the access point corresponding to other connections different from the current connection (the first connection). In this case, the first information of the first message frame may further include: connection identifiers corresponding to the first connection and/or other connections respectively. Each connection identifier may indicate the connection to which the corresponding change sequence identifier corresponds. As an illustrative example, when the first connection corresponds to Link1 shown in FIG. 1 and other connections correspond to Link3 shown in FIG. 1 , the first message frame sent in step 320 and operation S620 may include: changes corresponding to Link1 The sequence identifier and the connection identifier corresponding to Link1, and the change sequence identifier corresponding to Link3 and the connection identifier corresponding to Link3.

When the access point receives the first message frame sent in step 520 and operation S620, it can determine which access point's changed system information or basic service set (BSS) needs to be sent according to the change sequence identifier and the corresponding connection identifier. key updates. Correspondingly, in step 530, the station may receive a fifth message frame under the first connection, where the fifth message frame includes: system information indicating changes of access points corresponding to the first connection and other connections, and Connection identifiers of the first connection and/or other connections. In addition, according to an embodiment of the present disclosure, if a certain connection involves multiple system information changes, the connection identifier of the connection may only appear once. That is to say, one connection identifier may correspond to changes of multiple system information under one connection.

Step 530 may correspond to operation S630 of FIG. 6 , and as an example, the fifth message frame may be a compressed probe response frame or an ML probe response frame, which may carry a system of changes in access points corresponding to the first connection and other connections information, and/or the corresponding connection identifier.

In the embodiments described in Figures 5 and 6, the non-AP STA MLD can send a probe request frame or an ML probe request frame (ML probe) under the connection that receives the change sequence field or under any connection that has established multi-connection communication. request), where the value of the change sequence field under each connection may be different (or the same), so it needs to carry the corresponding connection identifier (link ID); then the non-AP STA MLD can receive the compression probe sent by the AP MLD Response frame or ML probe response frame (ML probe response) to obtain the changed system information and the corresponding connection identifier.

It can be understood that step 530 of FIG. 5 and step S630 of FIG. 6 are only exemplary, and the present disclosure is not limited thereto. For example, as shown in operations S430_1 and S430_2 of FIG. The changed system information of the corresponding access point, in this case, may not include the connection identifier.

FIG. 7 is a flowchart illustrating another communication method according to an embodiment. Another communication method shown in FIG. 7 can be applied to an access point supporting multi-connection communication.

In step 710, a first message frame may be received under the first connection. According to an embodiment, the first message frame may include first information, and the first information may include a first change sequence identifier related to a system information change of the access point corresponding to the first connection. As an example, the first message frame may be a probe request frame or an ML probe request frame, the first information may be a multi-connection (ML) information element in a probe request frame or an ML probe request frame, and the first change sequence identifier may be an ML The change sequence field in the information element. The first message frame, the first information and the first change sequence identifier here may be similar to the embodiments described with reference to

steps

210 and 220 of FIG. 2 , step 320 of FIG. 3 and operation S420_1 of FIG. 4 , and are omitted here for brevity Duplicate description.

In step 720, a corresponding communication operation may be performed based on the first message frame. For example, the access point may determine, according to the first change sequence identifier carried in the first message frame, whether to send the changed system information of the access point or the key update information of the basic service set (BSS). For another example, the access point may determine, according to other determinations carried in the first message frame, how to send the changed system information or the key update information of the basic service set (BSS).

The steps shown in the communication method of FIG. 7 are only exemplary, and embodiments of the present disclosure are not limited thereto. In one aspect, the communication method of FIG. 7 may further include the operations performed by the access point of the AP MLD in FIG. 4 .

Specifically, the communication method in FIG. 7 may further include: receiving a second message frame under another connection different from the first connection (corresponding to operation S420_2 in FIG. 4 , in order to avoid redundancy, repeated descriptions are omitted here). ), wherein the second message frame may include another change sequence identifier related to the change of the system information of the access point corresponding to the other connection. In addition, the communication method of FIG. 7 may further include: respectively sending a third message frame under the first connection and the other connection, wherein the third message frame may include system information indicating a change of the access point of the corresponding connection (corresponding to In operations S430_1 and S430_2 of FIG. 4 , in order to avoid redundancy, repeated descriptions are omitted here). In addition, the communication method of FIG. 7 may further include: respectively sending a fourth message frame under the first connection and the other connection, wherein the fourth message frame may include information indicating that the system information of the correspondingly connected access point has changed Identification (corresponding to operations S410_1 and S410_2 of FIG. 4 , and repeated descriptions are omitted here in order to avoid redundancy).

On the other hand, the communication method of FIG. 7 may further include the operations performed by the access point of the AP MLD in FIG. 6 .

Specifically, in operation S620, the first information of the first message frame received by the access point under the first connection may further include: system information changes of the access point corresponding to other connections different from the first connection Other changes related to sequence identification. In addition, the first information may further include: connection identifiers corresponding to the first connection and/or other connections respectively. In addition, the communication method in FIG. 7 may further include: sending a fifth message frame under the first connection, where the fifth message frame may include: system information indicating changes of access points corresponding to the first connection and other connections, and the connection identifiers of the first connection and/or other connections (corresponding to operation S630 of FIG. 6 , in order to avoid redundancy, repeated descriptions are omitted here). In addition, the communication method of FIG. 7 may further include: sending a sixth message frame under the first connection, wherein the sixth message frame may include second information, and the second information may include: indicating an access corresponding to the first connection The information identifier that the system information of the point has changed, and the information identifier indicating that the system information of the access point corresponding to other connections different from the first connection has changed (corresponding to operation S610 of FIG. 6 , in order to avoid redundancy, in Duplicate descriptions are omitted here).

FIG. 8 is a flowchart illustrating another communication method according to an embodiment. The communication method shown in FIG. 8 can be applied to a station supporting multi-connection communication. FIG. 9 is a schematic diagram illustrating interactive communication of an embodiment corresponding to the communication method shown in FIG. 8 . FIG. 10 is a schematic diagram illustrating interactive communication in another embodiment corresponding to the communication method shown in FIG. 8 .

In step 810, a seventh message frame may be received under the first connection in the multi-connection, wherein the seventh message frame may include changed system information or basic service set (BSS) of the access point corresponding to the first connection key updates. The multi-connection may be a multi-connection communication established between the non-AP STA MLD and the AP MLD. As an example, the seventh message frame may be a beacon frame that carries the changed system information of the access point corresponding to the first connection or the key update information of the basic service set (BSS).

In step 820, a corresponding communication operation may be performed based on the seventh message frame. For example, the station may determine changed system information based on the information carried in the first message frame, and perform further communication operations (eg, data exchange, etc.) based on the changed system information.

The communication method shown in FIG. 8 is only exemplary, and the present disclosure is not limited thereto.

In one aspect of the present disclosure, the communication method shown in FIG. 8 may further include the operations performed by the stations (eg, STA1 and STA2) in FIG. 9 .

For example, the communication method of FIG. 8 may further include: respectively receiving a ninth message frame under the first connection and another connection different from the first connection, wherein the ninth message frame may include an information indicating the access point of the corresponding connection. The information identification of the changed system information, that is, operation S910_1 and operation S910_2 of FIG. 9 . Specifically, in operation S910_1, the information identifier about the access point (AP1) corresponding to the first connection may be received under the first connection (Link1); in operation S910_2, the information identifier of the access point (AP1) corresponding to the first connection may be received under another connection (Link2) An information identification about an access point (AP2) corresponding to another connection is received. According to the embodiment, the ninth message frame may be a beacon frame sent by a corresponding access point, and the information identifier about AP1 and the information identifier about AP2 may be respectively the change sequence fields in the corresponding beacon frames, and their meanings are similar In the embodiment in operations S410_1 and S410_2 of FIG. 4 , in order to avoid redundancy, repeated descriptions are omitted here.

Operation S920_1 of FIG. 9 may correspond to step 810 of FIG. 8 . In addition, the communication method shown in FIG. 8 may further include: under another connection different from the first connection, receiving an eighth message frame, wherein the eighth message frame may include a change of an access point corresponding to the other connection system information (operation S920_2 of FIG. 9 ). As an example, the eighth message frame may be a beacon frame, which carries the changed system information of the access point (AP2) corresponding to the other connection or the key update information of the basic service set (BSS).

In the embodiment of FIG. 9 , the station may receive the corresponding beacon frame under the corresponding connection, which may carry the change sequence field indicating that the corresponding access point has undergone a system information change (operations S910_1 and S910_2); Different from the embodiment described in FIG. 3 and FIG. 4 , in the communication method in FIG. 9 , the station does not obtain the changed system information through the probe request frame (or ML probe request frame) and the compressed probe response frame (or ML probe response frame). , but another beacon frame may be directly received from the corresponding access point, which carries the changed system information or the key update information of the Basic Service Set (BSS) (operations S920_1 and S920_2 ).

In another aspect of the present disclosure, the communication method shown in FIG. 8 may further include the operations performed by the station (eg, STA1 ) in FIG. 10 .

Referring to FIG. 10, in operation S1010, a tenth message frame may be received under the first connection. The tenth message frame may include an information identifier indicating that the system information of the access points corresponding to the first connection and other connections different from the first connection have changed. According to an embodiment, the tenth message frame may be a beacon frame received from the corresponding access point, and the information identification may be a change sequence field in a reduced neighbor report information element of the beacon frame. Unlike operations S910_1 and S910_2 of FIG. 9 , in operation S1010, the tenth message frame (beacon frame) received under the first connection may include not only the access point corresponding to the present connection (eg, the first connection) The information identifier of the change of the system information of the other connection may also include the information identifier of the change of the system information of the access point corresponding to the other connection. In this case, the tenth message frame may further include a connection identifier, so as to indicate which connection the corresponding information identifier corresponds to. Operation S1010 of FIG. 10 may be similar to the descriptions of step 510 of FIG. 5 and operation S610 of FIG. 6 , and repeated descriptions are omitted here in order to avoid redundancy.

In operation S1020, a seventh message frame may be received under the first connection, wherein the seventh message frame may include changed system information of an access point corresponding to the first connection. In addition, the seventh message frame may further include: changed system information of access points corresponding to other connections different from the first connection, and connection identifiers of the first connection and/or other connections. As an example, the seventh message frame may be a beacon frame.

In the embodiment of FIG. 10 , a station may receive a beacon frame under one connection, and the beacon frame may carry a change sequence field and a connection identifier indicating that the system information of the connection and other connected access points have changed (operation S1010 ) Afterwards, unlike the embodiments described with reference to Fig. 5 and Fig. 6, in the communication method of Fig. 10, the station does not pass a probe request frame (or ML probe request frame) and a compressed probe response frame (or ML probe response frame) to The changed system information can be obtained by receiving another beacon frame, which can carry the changed system information of the access point of this connection, the connection identifier of this connection, and the information of other connected access points. The beacon frame of the changed system information and the connection identification of other connections (operation S1020).

FIG. 11 is a flowchart illustrating another communication method according to an embodiment. The communication method shown in FIG. 11 can be applied to an access point supporting multi-connection communication.

In step 1110, a seventh message frame may be determined. In step 1120, a seventh message frame may be sent under the first connection in the multiple connections, where the seventh message frame may include changed system information of the access point corresponding to the first connection. According to an embodiment of the present disclosure, the seventh message frame may be determined under the same connection as the first connection in step 1120, however, the present disclosure is not limited thereto, and the seventh message frame may also be determined under a connection different from the first connection frame. In the embodiment of the present disclosure, there may be many ways to determine the seventh message frame. For example, the AP MLD may generate the first message frame according to at least one of the following conditions: network conditions, load conditions, the sending/receiving device's Hardware capabilities, service types, and related protocols are stipulated; there is no specific limitation on this embodiment of the present disclosure. In this embodiment of the present disclosure, the AP MLD may also acquire the first message frame from an external device, which is not specifically limited in this embodiment of the present disclosure.

The communication method shown in FIG. 11 is only exemplary, and the present disclosure is not limited thereto.

In one aspect, the communication method shown in FIG. 11 may further include the operations performed by the access points (eg, AP1 and AP2 ) in FIG. 9 .

For example, the communication method of FIG. 11 may further include: respectively sending a ninth message frame under the first connection and another connection, wherein the ninth message frame may include a message indicating that the system information of the access point connected to the corresponding connection has changed. Information identification (operations S910_1 and S910_2 of FIG. 9 ).

For example, the communication method of FIG. 11 may further include: under another connection different from the first connection, sending an eighth message frame, wherein the eighth message frame may include the system of the change of the access point corresponding to the other connection information (operation S920_2 of FIG. 9 ).

On the other hand, the communication method shown in FIG. 11 may further include the operations performed by the access point (eg, AP1 ) in FIG. 10 .

For example, the communication method shown in FIG. 11 may further include: under the first connection, sending a tenth message frame, wherein the tenth message frame may include a connection indicating a connection corresponding to the first connection and other connections different from the first connection. An information flag indicating that the system information of the in-point has changed (S1010 in FIG. 10 ).

For example, the communication method shown in FIG. 11 may further include: under the first connection, sending a seventh message frame, where the seventh message frame may include changed system information of the access point corresponding to the first connection, and in addition, The seventh message frame may further include: changed system information of access points corresponding to other connections different from the first connection, and connection identifiers of the first connection and/or other connections (S1020 of FIG. 10 ).

FIG. 12 is a block diagram illustrating a communication device 1200 according to an embodiment. The communication apparatus 1200 of FIG. 12 may include a processing module 1210 and a transceiver module 1220 .

According to an embodiment, the communication apparatus 1200 shown in FIG. 12 may be applied to a station supporting multi-connection communication.

In one aspect, the processing module 1210 may be configured to: determine the first message frame; the transceiver module 1220 may be configured to: send the first message frame under the first connection in the multiple connections, wherein the first message frame may include the first message frame information, the first information may include a first change sequence identifier related to the change of the system information of the access point corresponding to the first connection. In addition, the communication apparatus 1200 shown in FIG. 12 can perform the communication methods of FIGS. 2 , 3 and 5 and the operations performed by the non-AP STA MLD in FIGS. 4 and 6 . To avoid redundancy, repeated repetitions are omitted here. describe.

On the other hand, the transceiver module 1220 may be configured to: receive a seventh message frame under the first connection in the multiple connections, wherein the seventh message frame may include the changed system information of the access point corresponding to the first connection; The processing module 1210 may be configured to perform a corresponding communication operation based on the seventh message frame. In addition, the communication apparatus 1200 shown in FIG. 12 may perform the communication method of FIG. 8 and the operations performed by the non-AP STA MLD in FIGS. 9 and 10 , and repeated descriptions are omitted here in order to avoid redundancy.

According to an embodiment, the communication apparatus 1200 shown in FIG. 12 may be applied to an access point supporting multi-connection communication.

On the one hand, the transceiver module 1220 may be configured to receive a first message frame under a first connection in the multiple connections, where the first message frame may include first information, and the first information may include a first message corresponding to the first connection The first change sequence identifier related to the system information change of the access point; the processing module 1210 may be configured to: perform a corresponding communication operation based on the first message frame. In addition, the communication apparatus 1200 shown in FIG. 12 may perform the communication method of FIG. 7 and the operations performed by the AP MLD in FIGS. 4 and 6 , and repeated descriptions are omitted here in order to avoid redundancy.

On the other hand, the processing module 1210 may be configured to: determine the seventh message frame; the transceiver module 1220 may be configured to: send the seventh message frame under the first connection in the multiple connections, wherein the seventh message frame may include a Changed system information of the access point corresponding to the first connection. In addition, the communication apparatus 1200 shown in FIG. 12 may perform the communication method of FIG. 11 and the operations performed by the AP MLD in FIGS. 9 and 10 , and repeated descriptions are omitted here in order to avoid redundancy.

In addition, the communication apparatus 1200 shown in FIG. 12 is only exemplary, and embodiments of the present disclosure are not limited thereto, for example, the communication apparatus 1200 may further include other modules, such as a memory module and the like. Furthermore, the various modules in the communication apparatus 1200 may be combined into more complex modules, or may be divided into more separate modules.

The communication method and communication device according to the embodiments of the present disclosure can provide a concise method for a site to acquire changed system information, meet the requirements of multi-connection communication, and improve spectrum utilization.

Based on the same principle as the method provided by the embodiment of the present disclosure, the embodiment of the present disclosure further provides an electronic device, the electronic device includes a processor and a memory; wherein, the memory stores machine-readable instructions (or may referred to as a "computer program"); a processor for executing machine-readable instructions to implement the methods described with reference to FIGS. 2 to 11 .

Embodiments of the present disclosure also provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the methods described with reference to FIG. 2 to FIG. 11 are implemented.

In an example embodiment, a processor may be used to implement or execute various exemplary logical blocks, modules and circuits described in connection with the present disclosure, for example, a CPU (Central Processing Unit, central processing unit), general processing device, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit, application-specific integrated circuit), FPGA (Field Programmable Gate Array, Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

In an example embodiment, the memory may be, for example, ROM (Read Only Memory), RAM (Random Access Memory), EEPROM (Electrically Erasable Programmable Read Only Memory) Read memory), CD-ROM (Compact Disc Read Only Memory, CD-ROM) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage media or other magnetic A storage device, or any other medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a computer, without limitation.

It should be understood that although the various steps in the flowchart of the accompanying drawings are sequentially shown in the order indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless explicitly stated herein, the execution of these steps is not strictly limited to the order and may be performed in other orders. In addition, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution sequence is also It does not have to be performed sequentially, but may be performed alternately or alternately with other steps or at least a portion of sub-steps or stages of other steps.

Although the present disclosure has been shown and described with reference to certain embodiments of the present disclosure, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present disclosure. Therefore, the scope of the present disclosure should not be limited by the embodiments, but should be defined by the appended claims and their equivalents.

Claims

A multi-connection communication method, applied to a site supporting multi-connection communication, the communication method comprising:

determine the first message frame;

A first message frame is sent under the first connection in the multiple connections, wherein the first message frame includes first information, and the first information includes system information changes of the access point corresponding to the first connection The associated first change sequence identifier.
The communication method according to claim 1, wherein the communication method further comprises:

sending a second message frame under another connection different from the first connection,

Wherein, the second message frame includes another change sequence identifier related to the change of the system information of the access point corresponding to the other connection.
The communication method according to claim 2, wherein the communication method comprises:

A third message frame is received under the first connection and the other connection, respectively, wherein the third message frame includes system information indicating a change of access point of the corresponding connection.
The communication method according to claim 2 or 3, wherein the communication method comprises:

A fourth message frame is respectively received under the first connection and the another connection, wherein the fourth message frame includes an information identifier indicating that the system information of the access point of the corresponding connection has changed.
The communication method according to claim 1, wherein the first information further comprises: other change sequence identifiers related to system information changes of access points corresponding to other connections different from the first connection.
The communication method according to claim 5, wherein the first information further comprises: connection identifiers corresponding to the first connection and/or the other connections respectively.
The communication method according to claim 5, wherein the communication method comprises:

receiving a fifth message frame under said first connection,

The fifth message frame includes: system information indicating changes of access points corresponding to the first connection and the other connections, and connection identifiers of the first connection and/or the other connections.
The communication method according to any one of claims 5 to 7, wherein the communication method further comprises:

A sixth message frame is received under the first connection, wherein the sixth message frame includes second information including a change in system information indicating an access point corresponding to the first connection information identification.
The communication method according to claim 8, wherein the second information further comprises: an information identifier indicating that system information of an access point corresponding to a connection other than the first connection has changed.
A multi-connection communication method, applied to an access point supporting multi-connection communication, the communication method comprising:

A first message frame is received under a first connection in multiple connections, wherein the first message frame includes first information, and the first information includes a change in system information of an access point corresponding to the first connection the relevant first change sequence identification;

Based on the first message frame, a corresponding communication operation is performed.
The communication method according to claim 10, wherein the communication method further comprises:

receiving a second message frame under another connection different from said first connection,

Wherein, the second message frame includes another change sequence identifier related to the change of the system information of the access point corresponding to the other connection.
The communication method according to claim 11, wherein the communication method further comprises:

A third message frame is sent under the first connection and the other connection, respectively, wherein the third message frame includes system information indicating a change of the access point of the corresponding connection.
The communication method according to claim 11 or 12, wherein the communication method comprises:

A fourth message frame is respectively sent under the first connection and the other connection, wherein the fourth message frame includes an information identifier indicating that the system information of the access point of the corresponding connection has changed.
The communication method according to claim 10, wherein the first information further comprises: other change sequence identifiers related to system information changes of access points corresponding to other connections different from the first connection.
The communication method according to claim 14, wherein the first information further comprises: connection identifiers corresponding to the first connection and/or the other connections respectively.
The communication method according to claim 14, wherein the communication method further comprises:

sending a fifth message frame under the first connection,

The fifth message frame includes: system information indicating changes of access points corresponding to the first connection and the other connections, and connection identifiers of the first connection and/or the other connections.
The communication method according to any one of claims 14 to 16, wherein the communication method further comprises:

A sixth message frame is sent under the first connection, wherein the sixth message frame includes second information including a change in system information indicating an access point corresponding to the first connection information identification.
The communication method according to claim 17, wherein the second information further comprises: an information identifier indicating that system information of an access point corresponding to a connection other than the first connection has changed.
A multi-connection communication method, applied to a site supporting multi-connection communication, the communication method comprising:

receiving a seventh message frame under a first connection in the multiple connections, wherein the seventh message frame includes changed system information of an access point corresponding to the first connection;

Based on the seventh message frame, a corresponding communication operation is performed.
The communication method according to claim 19, wherein the communication method further comprises:

Under another connection different from the first connection, an eighth message frame is received, wherein the eighth message frame includes changed system information of an access point corresponding to the other connection.
The communication method according to claim 20, wherein the communication method further comprises:

under the first connection and the another connection, respectively receiving a ninth message frame,

Wherein, the ninth message frame includes an information identifier indicating that the system information of the corresponding connected access point has changed.
The communication method according to claim 19, wherein the seventh message frame further includes: changed system information of access points corresponding to other connections different from the first connection, and the first connection and /or the connection identifier of the other connection.
The communication method according to claim 22, wherein the communication method further comprises:

Under said first connection, a tenth message frame is received,

Wherein, the tenth message frame includes an information identifier indicating that the system information of the access points corresponding to the first connection and the other connections has changed.
A multi-connection communication method, applied to an access point supporting multi-connection communication, the communication method comprising:

determine the seventh message frame;

A seventh message frame is sent under a first connection in the multiple connections, wherein the seventh message frame includes system information of changes of access points corresponding to the first connection.
The communication method according to claim 24, wherein the communication method further comprises:

sending an eighth message frame under another connection different from the first connection,

Wherein, the eighth message frame includes the changed system information of the access point corresponding to the other connection.
The communication method according to claim 25, wherein the communication method further comprises:

Under the first connection and the another connection, the ninth message frame is respectively sent,

Wherein, the ninth message frame includes an information identifier indicating that the system information of the corresponding connected access point has changed.
The communication method according to claim 24, wherein the seventh message frame further includes: changed system information of access points corresponding to other connections different from the first connection, and the first connection and /or the connection identifier of the other connection.
The communication method according to claim 27, wherein the communication method further comprises:

Under the first connection, a tenth message frame is sent,

Wherein, the tenth message frame includes an information identifier indicating that the system information of the access points corresponding to the first connection and the other connections has changed.
A multi-connection communication device, applied to a site supporting multi-connection communication, the communication device comprising:

a processing module, configured to: determine the first message frame;

a transceiver module configured to: send a first message frame under a first connection in the multiple connections, wherein the first message frame includes first information, and the first information includes a connection with the first connection The first change sequence identifier related to the change of the system information of the corresponding access point.
A communication device under multi-connection, applied to an access point supporting multi-connection communication, the communication device comprises:

A transceiver module configured to: receive a first message frame under a first connection in the multiple connections, wherein the first message frame includes first information, and the first information includes a connection with the first connection a first change sequence identifier related to the change of the system information of the corresponding access point;

The processing module is configured to: perform a corresponding communication operation based on the first message frame.
A multi-connection communication device, applied to a site supporting multi-connection communication, the communication device comprising:

a transceiver module, configured to: receive a seventh message frame under a first connection in the multiple connections, wherein the seventh message frame includes system information of changes of access points corresponding to the first connection;

The processing module is configured to: perform a corresponding communication operation based on the seventh message frame.
A multi-connection communication device applied to an access point supporting multi-connection communication, the communication device comprising:

a processing module, configured to: determine the seventh message frame;

The transceiver module is configured to: send a seventh message frame under the first connection in the multiple connections, where the seventh message frame includes system information of the change of the access point corresponding to the first connection.
An electronic device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor implements the computer program of claims 1 to 9 when the processor executes the computer program The method of any one of claims 10 to 18, any one of claims 19 to 23, or any one of claims 24 to 28.
A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, any one of Claims 1 to 9 and Claims 10 to 18 are implemented. The method of any one of claims 19 to 23, or any one of claims 24 to 28.