WO2025217809A1 - Communication method, communication device, and communication system - Google Patents

Abstract

Embodiments of the present disclosure relate to a communication method, a communication device, and a communication system. The communication method comprises: a station device determining a first radio frame, wherein the first radio frame comprises first identifier information and second identifier information; the first identifier information identifies: disassociation information for disassociating the station device from a first access point (AP) device associated with the station device; and the second identifier information identifies: a medium access control (MAC) address of a target AP to which the station device roams or hands over, or an MAC address of an AP multilink device (AP MLD) to which the target AP is affiliated; and sending the first radio frame. Therefore, upon detecting the roaming intent of the station device, a first AP prepares for and assists in the completion of a roaming or handover process of the station device, thereby preventing data communication interruption, reducing communication jitter, and reducing communication delay.

Description

Communication method, communication equipment and communication system Technical Field

The present disclosure relates to the field of communication technology, and in particular to a communication method, communication equipment, and communication system.

Background Art

Currently, Wi-Fi technology research includes ultra-high reliability (UHR), whose vision is to improve the reliability of wireless local area network (WLAN) connections, reduce latency, improve manageability, increase throughput at different signal-to-noise ratio (SNR) levels, and reduce device-level power consumption.

In UHR, a station (STA) establishes an initial association with an access point (AP) and begins data communication. If the station roams or switches to a target AP, data communication continuity must be maintained during this process. Therefore, mechanisms for station roaming or switching between multiple APs need to be further refined to meet UHR transmission requirements.

Summary of the Invention

The embodiments of the present disclosure provide a communication method, a communication device, and a communication system to further improve the mechanism for roaming or switching of a site device between multiple APs and meet UHR transmission requirements.

In one aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

The site device determines a first wireless frame; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: a first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: a media access control MAC address of a target AP to which the site device roams or switches, or a MAC address of a multi-link access point device AP MLD to which the target AP is attached;

The first radio frame is sent.

On the other hand, an embodiment of the present disclosure further provides a communication method, the method comprising:

The first AP receives a first wireless frame sent by a site device; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is affiliated.

On the other hand, an embodiment of the present disclosure further provides a communication method, the method comprising:

The target AP receives a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

The first identification information identifies: a site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is affiliated.

On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a site device, and the site device includes:

A determination module is configured to determine a first wireless frame; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: a first access point device AP with which the station device is associated, and disassociation information; the second identification information identifies: a media access control MAC address of a target AP to which the station device roams or switches, or a MAC address of a multi-link access point device AP MLD to which the target AP is attached;

A sending module is used to send the first wireless frame.

On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first AP, and the first AP includes:

The first receiving module is used to receive a first wireless frame sent by a site device; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached.

On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a target AP, and the target AP includes:

A second receiving module is configured to receive a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

The first identification information identifies: a site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is affiliated.

On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a site device, including:

one or more processors;

The site device is used to execute the communication method described in the embodiment of the present disclosure.

On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first AP, including:

one or more processors;

The first AP is used to implement the communication method described in the embodiment of the present disclosure.

On the other hand, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a target AP, including:

one or more processors;

The target AP is used to execute the communication method described in the embodiment of the present disclosure.

The embodiment of the present disclosure also provides a communication system, including a site device, a first AP, and a target AP;

The site device determines and sends a first wireless frame to the first AP; the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the media access control MAC address of the target AP to which the site device roams or switches, or the MAC address of the multi-connection access point device AP MLD to which the target AP is attached;

The first AP receives the first wireless frame sent by the site device, determines and sends a handover trigger frame or a roaming trigger frame to the target AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

The target AP receives the handover trigger frame or the roaming trigger frame.

The embodiment of the present disclosure further provides a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in the embodiment of the present disclosure.

In the disclosed embodiment, the site device carries first identification information and second identification information in the first wireless frame, and uses the first identification information to identify the first access point device AP associated with the site device and the disassociation information; uses the second identification information to identify the media access control MAC address of the target AP to which the site device roams or switches, or the MAC address of the multi-connection access point device AP MLD to which the target AP is attached, so as to realize seamless switching of the site device between multiple APs, ensure the continuity of data communication, reduce communication jitter, and reduce transmission delay, thereby meeting UHR requirements.

Additional aspects and advantages of the embodiments of the present disclosure will be given in part in the following description, which will become apparent from the following description or be learned through practice of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure;

FIG2 is an exemplary interaction diagram of a method provided according to an embodiment of the present disclosure;

FIG3 is a schematic diagram of the RSNE information field structure of the communication method provided in an embodiment of the present disclosure;

FIG4 is a schematic diagram of the structure of RSNXE information elements of the communication method provided in an embodiment of the present disclosure;

FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG6 is a second flow chart of the communication method provided in an embodiment of the present disclosure;

FIG7 is a third flow chart of the communication method provided in an embodiment of the present disclosure;

FIG8 is a schematic structural diagram of a site device proposed in an embodiment of the present disclosure;

FIG9 is a schematic structural diagram of a first AP proposed in an embodiment of the present disclosure;

FIG10 is a schematic diagram of the structure of the target AP proposed in an embodiment of the present disclosure;

FIG11 is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

FIG12 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.

DETAILED DESCRIPTION

The embodiments of the present disclosure provide a communication method, a communication device, and a communication system.

In a first aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

The site device determines a first wireless frame; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: a first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: a media access control MAC address of a target AP to which the site device roams or switches, or a MAC address of a multi-link access point device AP MLD to which the target AP is attached;

The first radio frame is sent.

In the above embodiment, when the site device roams or switches to the coverage of the target AP, the site device will prepare the release information of disassociation with the first AP, as well as the address information of the target AP to be roamed or switched, and send it to the first AP through the first wireless frame, so that the first AP understands the roaming intention of the site device, thereby preparing and assisting the site device to complete the roaming or switching process, avoiding data communication interruption, reducing communication jitter, and at the same time reducing communication delay, thereby reducing the waiting time of the site device user during roaming or switching.

In conjunction with some embodiments of the first aspect, in some embodiments, the first radio frame further includes at least one of the following:

First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

Robust Security Network Element (RSNE) information of the site equipment;

The robust security network extension RSNXE information element of the site equipment.

In the above embodiment, the above information helps the first AP correctly identify the target AP as a multi-connection device, which helps the first AP to execute corresponding measures and prepare for the roaming process of the site device, thereby reducing the possibility of roaming delay and data communication interruption.

In combination with some embodiments of the first aspect, in some embodiments, the release information includes: link ID information of each link when the site device is disassociated from the first AP, or the MAC address of the first AP, or the MAC address of the AP MLD to which the first AP is attached.

In the above embodiment, the release information includes the link ID information of the link or the AP's MAC address, which accurately identifies and locates the first AP and its associated devices. Providing the necessary release information during roaming simplifies the roaming process, reducing interaction steps and communication burden. This helps speed up roaming and improves the user experience.

In conjunction with some embodiments of the first aspect, in some embodiments, the first radio frame includes at least one of the following:

Basic service set switching management BTM request frame, link reconfiguration request frame, and newly defined wireless frame.

In the above embodiments, these different types of wireless frames can bring about various beneficial effects such as improving network performance, enhancing user experience, optimizing network management, and supporting new functions and technologies, thereby improving the overall network quality and service level.

In conjunction with some embodiments of the first aspect, in some embodiments, after sending the first radio frame, the method includes:

Receive a second wireless frame sent by the first AP; wherein the second wireless frame includes fourth identification information, and the fourth identification information: identifies whether the first AP accepts the site device to be disassociated from it; and/or whether the first AP allows the site device to switch or roam to the target AP.

In the above embodiment, after receiving the second radio frame, the station device will perform corresponding processing based on the information contained therein. For example, if the fourth identification information carried in the second radio frame indicates that the first AP accepts the station device's disassociation from it and allows the station device to switch or roam to the target AP, the station device will initiate the corresponding switching or roaming process, avoiding wasting time in uncertain situations.

In conjunction with some embodiments of the first aspect, in some embodiments, the second radio frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The Internet Protocol IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

In the above embodiment, by including the RSNE information of the target AP, it is possible to ensure that the secure connection between the station device and the target AP is correctly configured and negotiated, thereby improving the security and reliability of communication. By including the RSNXE information element of the target AP, the station device can understand the latest security features supported by the target AP, thereby improving the security and flexibility of communication. Including the target AP's MAC address ensures that the site device can correctly identify the target AP, thereby establishing a stable and reliable communication connection. Providing the target AP's IP address information ensures that the site device can correctly locate the target AP and use the correct routing path when communicating, which helps ensure communication stability and reliability.

In conjunction with some embodiments of the first aspect, in some embodiments, the second radio frame includes at least one of the following:

BTM response frame, link reconfiguration response frame, and newly defined wireless frame.

In the above embodiment, the BTM response frame and the link reconfiguration response frame can be used to confirm the reception of the first radio frame and provide a corresponding response. This confirmation and feedback mechanism helps to ensure the reliability of communication and ensure the smooth progress of the roaming or handover process.

In a second aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

The first AP receives a first wireless frame sent by a site device; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is affiliated.

In conjunction with some embodiments of the second aspect, in some embodiments, after the first AP receives the first radio frame sent by the station device, the method includes:

Determining a handover trigger frame or a roaming trigger frame; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

Sending the handover trigger frame or the roaming trigger frame to the target AP.

In conjunction with some embodiments of the second aspect, in some embodiments, the handover trigger frame or the roaming trigger frame further includes at least one of the following:

First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

RSNE information of the site device; the RSNE information is carried in the first radio frame, or is obtained by the first AP during an association process with the site device;

The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device.

In conjunction with some embodiments of the second aspect, in some embodiments, after sending the handover trigger frame or the roaming trigger frame to the target AP, the method includes:

Receive a response frame sent by the target AP; wherein the response frame includes: third identification information, the third identification information identifying whether the target AP accepts the site device switching or roaming to the target AP.

In conjunction with some embodiments of the second aspect, in some embodiments, the response frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

In conjunction with some embodiments of the second aspect, in some embodiments, after receiving the response frame sent by the target AP, the method includes:

Determine a second wireless frame; wherein the second wireless frame includes fourth identification information, the fourth identification information: identifies whether the first AP accepts the site device to disassociate from it; and/or whether the first AP allows the site device to switch or roam to the target AP;

The second radio frame is sent.

In conjunction with some embodiments of the second aspect, in some embodiments, the second radio frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

In conjunction with some embodiments of the second aspect, in some embodiments, the second radio frame includes at least one of the following:

BTM response frame, link reconfiguration response frame, and newly defined wireless frame.

In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

The target AP receives a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

The first identification information identifies: a site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached.

In conjunction with some embodiments of the third aspect, in some embodiments, the handover trigger frame or the roaming trigger frame further includes at least one of the following:

First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

RSNE information of the site device; the RSNE information is carried in a first radio frame sent by the site device, or is obtained by the first AP during an association process with the site device;

The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device.

In conjunction with some embodiments of the third aspect, in some embodiments, after receiving the handover trigger frame or roaming trigger frame sent by the first AP, the method includes:

Sending a response frame to the first AP; wherein the response frame includes: third identification information, the third identification information identifying whether the target AP accepts the site device switching or roaming to the target AP.

In conjunction with some embodiments of the third aspect, in some embodiments, the response frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

In a fourth aspect, an embodiment of the present disclosure further provides a communication device, which is a site device, and the site device includes at least one of a determination module and a sending module; wherein the site device is used to execute the optional implementation method of the first aspect.

In a fifth aspect, an embodiment of the present disclosure further provides a communication device, which is a first AP and includes: a first receiving module; wherein the above-mentioned first AP is used to execute the optional implementation method of the second aspect.

In a sixth aspect, an embodiment of the present disclosure further provides a communication device, which is a target AP and includes: a second receiving module; wherein the above-mentioned target AP is used to execute the optional implementation method of the third aspect.

In a seventh aspect, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a site device, including:

one or more processors;

The site device is used to execute the optional implementation of the first aspect.

In an eighth aspect, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a first AP, including:

one or more processors;

The first AP is used to execute an optional implementation of the second aspect.

In a ninth aspect, an embodiment of the present disclosure further provides a communication device, wherein the communication device is a target AP, including:

one or more processors;

The target AP is used to execute an optional implementation of the third aspect.

In a tenth aspect, an embodiment of the present disclosure further provides a communication system, including a site device, a first AP, and a target AP;

The site device determines and sends a first wireless frame to the first AP; the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the media access control MAC address of the target AP to which the site device roams or switches, or the MAC address of the multi-connection access point device AP MLD to which the target AP is attached;

The first AP receives the first wireless frame sent by the site device, determines and sends a handover trigger frame or a roaming trigger frame to the target AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

The target AP receives the handover trigger frame or the roaming trigger frame.

In the eleventh aspect, an embodiment of the present disclosure further provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the optional implementation methods described in the first, second, and third aspects.

In the twelfth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first aspect, the second aspect, and the third aspect.

In a thirteenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first, second, and third aspects.

In a fourteenth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

It is understandable that the aforementioned site device, first AP, target AP, communication system, storage medium, program product, computer program, chip, or chip system are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

The embodiments of the present disclosure provide a communication method, a communication device, and a communication system. In some embodiments, the terms communication method, signal transmission method, wireless frame transmission method, etc. can be used interchangeably, and the terms information processing system, communication system, etc. can be used interchangeably.

The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and/or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

In the embodiments of the present disclosure, “plurality” refers to two or more.

In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

In some embodiments, descriptions such as "at least one of A and B," "A and/or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

The prefixes "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not limit the position, order, priority, quantity or content of the description objects. For the description of the description objects, please refer to the description in the context of the claims or embodiments. The use of prefixes should not constitute unnecessary restrictions. For example, if the description object is "field", then "first field" and "second field" are the same. The ordinal number before the "field" in the "paragraph" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is "level", the ordinal number before the "level" in "first level" and "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

In some embodiments, data, information, etc. may be obtained with the user's consent.

In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

FIG1 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

As shown in Figure 1, the communication system 100 includes a station device (STA) 101, a first access point device (AP) 102, and a target access point device 103.

In some embodiments, the site device 101 includes, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports WiFi communication. Optionally, the wireless communication terminal is, for example, at least one of a mobile phone, a wearable device, an Internet of Things device that supports WiFi communication, a car with WiFi communication, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, and a wireless terminal device in smart home, but is not limited thereto.

Specifically, the station device 101 may be a terminal device or network device equipped with a wireless fidelity (WiFi) chip. Optionally, the station device 101 may support multiple WLAN standards, such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next generation 802.11 protocol, but is not limited thereto.

In some embodiments, the access point device 102 and the target access point device 103 can be access points for mobile terminals to enter the wired network. The AP is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the AP can be a terminal device or network device with a wireless fidelity chip. Optionally, the AP can support multiple WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a, 802.11bf, 802.11bn, and support the next generation 802.11 protocol, but is not limited to this.

Optionally, in the embodiments of the present disclosure, the AP and STA may be devices supporting multiple connections, for example, they may be represented as a multi-connection access point device (Access Point Multi-Link Device, AP MLD) and a multi-connection site device (Non-Access Point Multi-Link Device, Non-AP MLD), respectively; AP MLD may represent an access point supporting multi-connection communication functions, and non-AP MLD may represent a site supporting multi-connection communication functions.

It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

The following embodiments of the present disclosure can be applied to the communication system 100 shown in Figure 1, or part of the subject, but are not limited thereto. The subjects shown in Figure 1 are examples. The communication system may include all or part of the subjects in Figure 1, or may include other subjects outside of Figure 1. The number and form of each subject are arbitrary. Each subject may be physical or virtual. The connection relationship between the subjects is an example. The entities may be connected or disconnected, and the connection may be in any manner, direct or indirect, wired or wireless.

The various embodiments of the present disclosure can be applied to wireless local area networks (WLANs), such as those using the 802.11 series of protocols. In a WLAN, a basic service set (BSS) is a fundamental component of a WLAN. A BSS network consists of station devices with some association within a specific coverage area. One scenario of association is that stations communicate directly with each other in an ad hoc network, which is called an independent basic service set (IBSS). Another more common scenario is that in a BSS network, there is only one central station dedicated to managing the BSS, called an access point device, and all other STAs in the network are associated with it. Other stations in the BSS network that are not central stations are called terminals, also called non-AP STAs. Terminals and non-AP STAs are collectively referred to as STAs. When describing STAs, there is no need to distinguish between APs and non-AP STAs. In the same BSS network, due to distance, transmission power, etc., a STA cannot detect other STAs that are farther away from it, and the two are each other's hidden nodes.

FIG2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the method includes:

In step 201, the site device 101 determines a first wireless frame; the first wireless frame includes first identification information and second identification information; the first identification information identifies the first AP 102 with which the site device 101 is associated, and disassociation information; the second identification information identifies the MAC address of the target AP 103 to which the site device 101 roams or switches, or the MAC address of the AP MLD to which the target AP is attached.

In a wireless LAN, when a station device moves within the coverage area of the Wi-Fi network, it may need to switch from one AP to another to maintain the continuity and stability of the network connection. For example, in a dense Wi-Fi network environment, in order to balance the load of different APs and optimize network performance, the AP may recommend to the station device to switch to another AP; or in some cases, due to spectrum congestion or interference, a certain AP may not be able to provide good service quality. In this case, the station device may improve the connection quality by roaming or switching to another AP; or when the coverage of the Wi-Fi network needs to be expanded, multiple APs are used to cover a larger area. In this case, the station device may need to roam or switch between different APs or AP MLDs.

In the disclosed embodiment, when a site device needs to roam or switch between different APs, the site device sends a first wireless frame to the current serving AP, carrying first identification information and second identification information in the first wireless frame; the first identification information is used to identify the first access point device AP with which the site device is associated, and the disassociation information; the second identification information is used to identify the media access control (MAC) address of the target AP to which the site device roams or switches, or the MAC address of the multi-connection access point device AP MLD to which the target AP is attached.

Among them, the site device may be a STA, a multi-link site device (non-Access Point Multi-Link Device, non-AP MLD), or a multi-link site device attached to a non-AP MLD; the first AP is the AP or AP MLD currently associated with the site device, or the current serving AP of the site device; the target AP may be the target access point device to which the site device is about to roam or switch, such as a target AP or target AP MLD.

The first radio frame is a wireless communication frame sent by a station device, used to request the first AP to disassociate from the first AP and to request handover or roaming to a target AP. The first radio frame may be a variety of message frames, including, but not limited to, an improved Basic Service Set Transition Management (BSS Transition Management, BTM) request frame, an improved Link Reconfiguration Request (Link Reconfiguration Request) frame, and a newly defined radio frame. The frame contains information related to disassociation, which identifies specific parameters for disassociation from the first AP. For example, this information may include: the link ID information of the station device's working link for each link disassociated from the first AP, the MAC address of the first AP, or the MAC address of the AP MLD to which the first AP is attached, for example, if the first AP supports multi-connection communication. For example, the first radio frame carries the link ID information of each link disassociated from the first AP, the MAC address of the first AP, or the MAC address of the AP MLD to which the first AP is attached, as well as the MAC address of the target AP to which the station device is roaming or handing over, or the MAC address of the AP MLD to which the target AP is attached.

In the embodiments of the present disclosure, roaming or switching, for example, a site device switches from a currently associated access point device (first AP) to another access point device (target AP), typically occurs when a mobile device moves to a new coverage area; roaming, for example, a site device roams from one AP to another AP, or from one AP MLD to another AP MLD; switching, for example, a site device switches from an affiliated AP of an AP MLD to another affiliated AP of the AP MLD.

Specifically, when a site device is conducting Wi-Fi communication with the first associated AP, if the site device roams or switches to the coverage of the target AP, according to the existing Fast Transition (FT) mechanism, the site device usually needs to reassociate with the target AP and perform a four-step handshake key negotiation before it can continue data communication. This will cause data communication to be interrupted and continuous data transmission cannot be guaranteed. For example, the site device is transmitting data with the first AP via Wi-Fi. When the site device moves to the coverage of the target AP and is ready to roam or switch to the target AP, the site device needs to re-associate with the target AP and perform a new key negotiation. This process takes a long time, and communication interruptions will occur, resulting in interrupted or intermittent data transmission, causing communication jitter. At the same time, since reassociation and key negotiation take a certain amount of time, communication latency will increase, affecting the real-time performance of data transmission.

In addition, the existing adding link mechanism or removing link mechanism uses the reconfiguration mechanism to increase or decrease APs, which is usually applicable to the same Basic Service Sets Basic Service Sets. This mechanism is designed to dynamically add or remove APs within a BSS to optimize network performance and resource utilization. While this mechanism can optimize AP management within a BSS, it does not directly address the issue of data communication interruptions during roaming. It cannot meet the needs of seamless data switching when roaming to other APs or access point multi-link devices (AP MLDs).

In the embodiment of the present disclosure, when the site device roams or switches to the coverage of the target AP, the site device will send the release information of disassociation from the first AP and the address information of the target AP to be roamed or switched to the first AP through the first wireless frame, so that the first AP can understand the roaming intention of the site device. The roaming intention is to request to disassociate with the first AP and switch to the target AP, thereby preparing and assisting the site device to complete the roaming or switching process, avoiding data communication interruption, reducing communication jitter, and at the same time reducing communication delay, thereby reducing the waiting time of the site device user during roaming or switching.

In the disclosed embodiments, when a site device roams or switches to a target AP, the site device sends disassociation information and the MAC address of the target AP or the AP MLD to which the target AP is attached to a first AP, enabling the first AP to assist the site device in completing the roaming or switching process. This enables the site device to roam or switch between different BSSs, maintaining continuity and stability in communication while also avoiding data communication interruptions and jitter. Before establishing an association with the target AP, the first AP is notified to disassociate to minimize data communication interruptions, thereby ensuring a seamless experience for mobile device users during roaming or switching and improving overall network performance.

Step 202: The site device 101 sends the first radio frame.

In the disclosed embodiment, the site device sends a first wireless frame to the first AP, identifies the first AP associated with it through the first wireless frame, disassociation information, and the MAC address of the target AP or the AP MLD to which the target AP is attached.

Step 203, the first AP 102 receives the first wireless frame sent by the site device 101.

In the disclosed embodiment, the first AP receives a first wireless frame sent by a site device; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP 102 with which the site device 101 is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP 103 to which the site device 101 roams or switches, or the MAC address of the AP MLD to which the target AP 103 is affiliated.

In some embodiments, the first radio frame further includes at least one of the following:

First link identification link ID information, first MAC address information, second MAC address information, robust security network element RSNE information of the site device; robust security network extension RSNXE information element of the site device.

The first link ID information identifies the target AP as a multi-connection device and the multiple links established between the station device and the target AP. For example, when the station device needs to roam with a multi-connection-supporting AP, carrying the target AP's link ID information lets the first AP know that the station device intends to switch to a multi-connection-supporting AP. Helping the first AP correctly identify the target AP as a multi-connection device helps it take appropriate measures and prepare for the station device's roaming process, thereby reducing roaming latency and the possibility of data communication interruptions.

The first MAC address information identifies the target AP as a multi-connection device and includes the MAC address of each link established between the station device and the target AP. For example, when the station device needs to roam with an AP that supports multi-connection, carrying the target AP's MAC address information allows the first AP to identify the target AP and communicate it to the target AP during roaming, thereby accelerating reassociation and key negotiation. This helps the first and target APs identify and prepare to handle the station device's roaming process, improving the efficiency and stability of the roaming process and reducing the possibility of data communication interruptions.

The first link ID information and the first MAC address information are obtained during the initial association or multi-link establishment process between the station device and the first AP. This information is obtained from the first AP during the initial association or multi-link establishment process and is used to identify the connection between the station device and the first AP. For example, during the initial association or multi-link establishment phase, the station device communicates with the first AP and obtains the necessary information from the first AP, including identification information required to establish a connection with the first AP, such as the link ID and MAC address. This information can then be used in subsequent communication processes, including when roaming or handing off to a target AP.

The second MAC address information identifies the MAC address of the station device on each link after it disassociates from the first AP. For example, when a station device needs to disassociate from the first AP, the second MAC address information allows the first AP to record the station device's identity information across different links. This allows the first AP to identify the station device when it returns and reassociates, and restore the corresponding settings or services on the link it previously left. This helps the first AP better manage the station device's disassociation process and reduce the possibility of communication jitter.

The robust security network element (RSNE) information of the station device; in the embodiment of the present disclosure, the first wireless frame may also include the RSNE information of the station device. The RSNE information is used for session key negotiation with the target AP/AP MLD. For example, assuming that a station device needs to establish a secure connection with the target AP, it can carry RSNE information for key negotiation. The RSNE information contains session key negotiation information and multicast key negotiation information for each link, and this This information is the same for each link, meaning that even if a station device establishes multiple links with the target AP, the session key negotiation and multicast key negotiation performed on each link are the same, rather than being negotiated separately for each link. Furthermore, RSNE information may also include other security parameters, such as algorithms and key information used for encryption and authentication. For example, when a station device supporting multiple connections needs to roam with the target AP, by carrying RSNE information, it can directly negotiate session keys when reassociating with the target AP without having to restart the entire key negotiation process. This can significantly reduce delays during roaming while protecting communication security.

If the first radio frame includes RSNE information, the RSNE is carried in the RSNE field of the first radio frame. The RSNE field format is shown in FIG3 . The RSNE field includes:

Element ID subfield, Length subfield, Version subfield, Group Data Cipher Suite subfield, Pairwise Cipher Suite Count subfield, Pairwise Cipher Suite List subfield, Authentication and Key Management (AKM) Group Count (AKM Suite Count) subfield, Authentication and Key Management (AKM) Group List (AKM Suite List) subfield, Robust Security Network Capabilities (RSN Capabilities) subfield, Pairwise Master Key (PMK) Identifier Count (PMKID Count) subfield, Pre-shared Key (PMK) Identifier List (PMKID List) subfield, Group Management Cipher Suite subfield.

In the disclosed embodiment, the first wireless frame may also include a Robust Security Network Extension Element (RSNXE) information element of the site device. The RSNXE information element extends the security network function of the site device. For example, it may contain additional security configuration information to enhance the security of communications. By carrying the RSNXE information element, the site device can pass additional security parameters or configuration information to the target AP, such as certificate information, data flow processing instructions, etc. This additional information can help the target AP better understand the security requirements of the site device and perform security configuration accordingly. In this way, the communication between the site device and the target AP can be more secure and reliable, and can adapt to different security configurations and environmental requirements.

Among them, if the first wireless frame includes an RSNXE information element, the format of the RSNXE information element is shown in Figure 4, and the RSNXE information element includes: an element identification (Element ID) subfield, a length (Length) subfield, and a robust security network extended function (Extended RSN Capabilities) subfield.

In step 204, the first AP 102 determines a switching trigger frame or a roaming trigger frame, wherein the switching trigger frame or the roaming trigger frame includes the first identification information and the second identification information.

In the disclosed embodiment, after receiving a first wireless frame sent by a site device, a first AP determines a handover trigger frame or a roaming trigger frame based on the first identification information and the second identification information carried in the first wireless frame. The handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information. For example, the first AP may carry, through the handover trigger frame or the roaming trigger frame, information indicating that the site device will disassociate the first AP with it, information indicating that the first AP will disassociate, and the MAC address of the target AP or the AP MLD to which the target AP is attached.

In some embodiments, the handover trigger frame or the roaming trigger frame further includes at least one of the following:

First link ID information, first MAC address information, second MAC address information, RSNE information of the site device, and RSNXE information element of the site device.

The first link ID information identifies the target AP as a multi-connection device and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

RSNE information of the site device; the RSNE information is carried in the first radio frame, or is obtained by the first AP during an association process with the site device;

The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device.

Step 205, the first AP 102 sends the switching trigger frame or roaming trigger frame to the target AP 103.

In the embodiment of the present disclosure, the first AP can determine the target AP to which the site device is preparing to roam or switch based on the MAC address of the first AP carried in the first wireless frame, or the MAC address of the AP MLD to which the first AP is attached, thereby preparing and assisting the site device to complete the roaming or switching process. For example, the first AP sends a switching trigger frame or a roaming trigger frame to the target AP, so that the target AP can promptly learn of the roaming or switching intention of the site device, and prepare to establish a connection with the site device based on the information carried in the switching trigger frame or the roaming trigger frame, thereby ensuring the continuity and stability of data communication and avoiding data loss caused by communication interruption during roaming or switching. Problems with communication jitter and increased transmission delay.

Step 206: The target AP 103 receives the handover trigger frame or the roaming trigger frame sent by the first AP 102.

Among them, the switching trigger frame or roaming trigger frame includes first identification information and second identification information; the first identification information identifies: the site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached.

In the disclosed embodiment, the target AP receives a handover trigger frame or roaming trigger frame sent by the first AP. Through the handover trigger frame or roaming trigger frame, the target AP can promptly understand the association status of the site device with the first AP and the roaming or handover intention of the site device, and is ready to receive a request from the site device to establish an association. When the site device enters the coverage area of the target AP, it establishes a connection with the target AP to achieve seamless handover. In this way, the site device can switch between different BSSs more quickly during roaming or handover, reducing the waiting time of the site device user during roaming or handover, while also reducing communication jitter and transmission latency, meeting UHR transmission requirements.

In step 207, the target AP 103 sends a response frame to the first AP 102; wherein, the response frame includes: third identification information, and the third identification information identifies whether the target AP 103 accepts the site device 101 switching or roaming to the target AP 103.

In the disclosed embodiment, the target AP sends a response frame indicating whether it accepts the roaming or handover request from the site device, allowing the first AP to more quickly understand the roaming or handover status of the site device. For example, when the third identification information indicates that the target AP accepts the site device handover or roaming to the target AP, the first AP can assist the site device in establishing a connection with the target AP after receiving the response frame, thereby accelerating the completion of the entire roaming or handover process and reducing the duration of communication interruption. If the third identification information indicates that the target AP does not accept the site device handover or roaming to the target AP, the first AP can send a notification to the site device, prompting the site device to retry roaming or handover to the target AP.

In some embodiments, the response frame further includes at least one of the following:

The RSNE information of the target AP may include a list of supported encryption and authentication algorithms, as well as other security-related parameters. Including the RSNE information of the target AP ensures that the secure connection between the station device and the target AP is correctly configured and negotiated, thereby improving the security and reliability of communication.

The RSNXE information element of the target AP may include new security features or extensions, such as enhanced authentication methods or additional encryption parameters. By including the RSNXE information element of the target AP, the station device can be aware of the latest security features supported by the target AP, thereby improving the security and flexibility of communication.

The MAC address of the target AP is a unique identifier used to ensure that the target device is the intended target AP. By including the MAC address of the target AP, it can ensure that the station device can correctly identify the target AP, thereby establishing a stable and reliable communication connection.

The Internet Protocol Address (IP) information of the target AP; the IP address information may be a reused IP address of the first AP or a new IP address. The target AP's IP address may be a reused IP address of the first AP, meaning that the first AP's IP address is retained; or it may be a new IP address, such as one newly assigned by the first AP. Providing the target AP's IP address information ensures that the site device can correctly locate the target AP and use the correct routing path during communication, which helps ensure stable and reliable communication.

In step 208, the first AP 102 determines a second wireless frame; the second wireless frame includes fourth identification information, and the fourth identification information identifies whether the first AP 102 accepts the site device from being disassociated from it; and/or whether the first AP 102 allows the site device 101 to switch or roam to the target AP 103.

In the disclosed embodiment, after receiving a response frame sent by a target AP, the first AP determines a second radio frame. The second radio frame may be a variety of response frames, including, but not limited to, a BTM response frame, a link reconfiguration response frame, and a newly defined radio frame. The first AP carries fourth identification information in the second radio frame. The fourth identification information identifies whether the first AP accepts disassociation from the site device and/or whether the first AP allows the site device to switch or roam to the target AP. By carrying the fourth identification information in the second radio frame, the first AP can quickly convey to the site device its decision on whether to accept disassociation from the site device and whether to allow the site device to switch or roam to the target AP, thereby accelerating the roaming or switching process and helping to reduce communication interruption time of the site device during the roaming or switching process.

In some embodiments, the second radio frame further includes at least one of the following:

The RSNE information of the target AP may include a list of supported encryption and authentication algorithms, as well as other security-related parameters. Including the RSNE information of the target AP ensures that the secure connection between the station device and the target AP is correctly configured and negotiated, thereby improving the security and reliability of communication.

The RSNXE information element of the target AP; the RSNXE information element of the target AP may contain new security features or extensions, Such as enhanced authentication methods or additional encryption parameters. By including the RSNXE information element of the target AP, the station device can understand the latest security features supported by the target AP, thereby improving the security and flexibility of communication.

The MAC address of the target AP is a unique identifier used to ensure that the target device is the intended target AP. By including the MAC address of the target AP, it can ensure that the station device can correctly identify the target AP, thereby establishing a stable and reliable communication connection.

The target AP's IP address information; wherein the IP address information is a reused IP address of the first AP or a new IP address. The target AP's IP address information may be a reused IP address of the first AP or a new IP address, such as one newly allocated by the first AP. Providing the target AP's IP address information ensures that the site device can correctly locate the target AP and use the correct routing path during communication, which helps ensure stable and reliable communication.

Step 209, the first AP 102 sends the second wireless frame.

In the embodiment of the present disclosure, the first AP can inform the site device about the decision to disassociate and roam or switch to the target AP by sending the second wireless frame. This provides clear guidance for the site device. The site device can decide the next action based on the information carried by the second wireless frame, avoiding wasting time in uncertain situations.

Step 210: The station device 101 receives the second radio frame.

In the embodiment of the present disclosure, after receiving the second wireless frame, the site device will make corresponding processing based on the information contained therein. For example, the fourth identification information carried by the second wireless frame indicates that the first AP accepts the site device's disassociation with it and allows the site device to switch or roam to the target AP, then the site device will initiate the corresponding switching or roaming process. Furthermore, if the site device decides to switch to the target AP, it will send a corresponding wireless frame to notify the first AP, and release the association with the first AP after the first AP replies with a response frame, and then try to establish a new connection with the target AP. After the switching or roaming is completed, the site device may update its network configuration information, such as updating the IP address or other network parameters, to ensure normal communication with the target AP. In addition, the site device may also send confirmation or feedback information to the first AP to ensure the smooth progress of the switching or roaming process. This feedback can help other devices in the network understand the status of the site device and make corresponding adjustments.

In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

In some embodiments, terms such as wireless access scheme and waveform can be used interchangeably.

In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values (for example, comparison with a predetermined value), but is not limited thereto.

In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 201 can be implemented as an independent embodiment, step 202 can be implemented as an independent embodiment, step 204 can be implemented as an independent embodiment, step 205 can be implemented as an independent embodiment, step 207 can be implemented as an independent embodiment, step 208 can be implemented as an independent embodiment, and step 209 can be implemented as an independent embodiment; the combination of step 201 and step 202 can be implemented as an independent embodiment, the combination of step 202 and step 203 can be implemented as an independent embodiment, the combination of step 203 and step 204 can be implemented as an independent embodiment, the combination of step 204 and step 205 can be implemented as an independent embodiment, the combination of step 205 and step 206 can be implemented as an independent embodiment, the combination of step 206 and step 207 can be implemented as an independent embodiment, the combination of step 207 and step 208 can be implemented as an independent embodiment, the combination of step 208 and step 209 can be implemented as an independent embodiment, and the combination of step 209 and step 210 can be implemented as an independent embodiment, but the present invention is not limited thereto.

In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

FIG5 is a flowchart of a communication method according to an embodiment of the present disclosure.

As shown in FIG5 , the above method may be applied to a site device 101, and the above method includes:

Step 501: The station device determines a first wireless frame; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: a first access point device (AP) with which the station device is associated, and disassociation information; the second identification information identifies: a media access control (MAC) address of a target AP to which the station device is roaming or switching, or a MAC address of a multi-link access point device (AP) to which the target AP is attached;

Step 502: Send the first wireless frame.

Optionally, in the embodiment of the present disclosure, the first radio frame further includes at least one of the following:

First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

Robust Security Network Element (RSNE) information of the site equipment;

The robust security network extension RSNXE information element of the site equipment.

Optionally, in an embodiment of the present disclosure, the release information includes: link ID information of each link when the site device is disassociated from the first AP, or the MAC address of the first AP, or the MAC address of the AP MLD to which the first AP is attached.

Optionally, in this embodiment of the present disclosure, the first radio frame includes at least one of the following:

Basic service set switching management BTM request frame, link reconfiguration request frame, and newly defined wireless frame.

Step 503, receiving a second wireless frame sent by the first AP; wherein the second wireless frame includes fourth identification information, and the fourth identification information: identifies whether the first AP accepts the site device to be disassociated from it; and/or whether the first AP allows the site device to switch or roam to the target AP.

Optionally, in the embodiment of the present disclosure, the second radio frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The Internet Protocol IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

Optionally, in this embodiment of the present disclosure, the second radio frame includes at least one of the following:

BTM response frame, link reconfiguration response frame, and newly defined wireless frame.

The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 501 may be implemented as an independent embodiment, step 502 may be implemented as an independent embodiment, and step 503 may be implemented as an independent embodiment; the combination of step 501 and step 502 may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 5 .

FIG6 is a second flowchart of a communication method according to an embodiment of the present disclosure.

As shown in FIG6 , the above method may be applied to the first AP 102, and the above method includes:

Step 601, the first AP receives the first wireless frame sent by the site device; wherein, the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and the disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is affiliated.

Step 602: Determine a handover trigger frame or a roaming trigger frame; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information.

Step 603: Send the handover trigger frame or roaming trigger frame to the target AP.

Optionally, in the embodiment of the present disclosure, the handover trigger frame or the roaming trigger frame further includes at least one of the following:

First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

RSNE information of the site device; the RSNE information is carried in the first radio frame, or is obtained by the first AP during an association process with the site device;

The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device.

Step 604: Receive a response frame sent by the target AP; wherein the response frame includes: third identification information, and the third identification information identifies whether the target AP accepts the site device switching or roaming to the target AP.

Optionally, in the embodiment of the present disclosure, the response frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

Step 605, determine a second wireless frame; wherein the second wireless frame includes fourth identification information, and the fourth identification information: identifies whether the first AP accepts the site device to disassociate with it; and/or whether the first AP allows the site device to switch or roam to the target AP.

Step 606: Send the second radio frame.

Optionally, in the embodiment of the present disclosure, the second radio frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

Optionally, in this embodiment of the present disclosure, the second radio frame includes at least one of the following:

BTM response frame, link reconfiguration response frame, and newly defined wireless frame.

The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 601 can be implemented as an independent embodiment, step 602 can be implemented as an independent embodiment, step 603 can be implemented as an independent embodiment, step 604 can be implemented as an independent embodiment, step 605 can be implemented as an independent embodiment, and step 606 can be implemented as an independent embodiment; the combination of step 601 and step 602 can be implemented as an independent embodiment, the combination of step 602 and step 603 can be implemented as an independent embodiment, the combination of step 604 and step 605 can be implemented as an independent embodiment, and the combination of step 605 and step 606 can be implemented as an independent embodiment, but the present invention is not limited thereto.

In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to 6.

FIG7 is a third flowchart of a communication method according to an embodiment of the present disclosure.

As shown in FIG. 7 , the above method may be applied to the target AP 103. The above method includes:

Step 701: The target AP receives a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes first identification information and second identification information;

The first identification information identifies: a station device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: a MAC address of a target AP to which the station device roams or switches, or a MAC address of the target AP. MAC address of the attached AP MLD.

Optionally, in the embodiment of the present disclosure, the handover trigger frame or the roaming trigger frame further includes at least one of the following:

First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP;

First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP;

Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP;

RSNE information of the site device; the RSNE information is carried in a first radio frame sent by the site device, or is obtained by the first AP during an association process with the site device;

The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device.

Step 702: Send a response frame to the first AP; wherein the response frame includes: third identification information, and the third identification information identifies whether the target AP accepts the site device switching or roaming to the target AP.

Optionally, in the embodiment of the present disclosure, the response frame further includes at least one of the following:

RSNE information of the target AP;

The RSNXE information element of the target AP;

The MAC address of the target AP;

The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address.

The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 701 may be implemented as an independent embodiment, step 702 may be implemented as an independent embodiment, and the combination of step 701 and step 702 may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to 7.

The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of the various units or modules in the above device is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits. The above-mentioned hardware circuits may be understood as one or more processors. For example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above-mentioned units or modules may be implemented by designing the logical relationship between the components in the circuit. For another example, in another implementation, the above-mentioned hardware circuit may be implemented by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured through a configuration file, thereby implementing the functions of some or all of the above-mentioned units or modules. All units or modules of the above-mentioned devices may be implemented entirely by the processor calling software, or entirely by hardware circuits, or partially by the processor calling software, and the remaining part by hardware circuits.

In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor may be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence. The circuit can be understood as ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

FIG8 is a schematic diagram of the structure of a station device according to an embodiment of the present disclosure. As shown in FIG8 , the station device 800 may include at least one of a determining module 801 and a sending module 802 .

In some embodiments, the above-mentioned determination module 801 is used to determine a first wireless frame; wherein, the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP associated with the site device, and disassociation information; the second identification information identifies: the media access control MAC address of the target AP to which the site device roams or switches, or the MAC address of the multi-connection access point device AP MLD to which the target AP is attached; the sending module 802 is used to send the first wireless frame.

Optionally, the determining module 801 is configured to execute at least one of the communication steps (e.g., step 201 and step 501, but not limited thereto) performed by the site device 101 in any of the above methods, which are not described in detail here. The sending module 802 is configured to execute at least one of step 202 and step 502, which are not described in detail here.

FIG9 is a schematic diagram of the structure of a first AP proposed in an embodiment of the present disclosure. As shown in FIG9 , the first AP 900 may include: a first receiving module 901.

In some embodiments, the above-mentioned first receiving module 901 is used to receive a first wireless frame sent by a site device; wherein, the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached.

Optionally, the above-mentioned first receiving module 901 is used to execute at least one of the communication steps (such as step 203, step 601, but not limited to this) performed by the first AP 102 in any of the above methods, which will not be repeated here.

FIG10 is a schematic diagram of the structure of the target AP proposed in an embodiment of the present disclosure. As shown in FIG10 , the target AP 1000 may include: a second receiving module 1001.

In some embodiments, the second receiving module 1001 is configured to receive a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information;

The first identification information identifies: a site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached.

Optionally, the second receiving module 1001 is used to execute at least one of the communication steps (such as step 206, step 701, but not limited to) performed by the target AP 103 in any of the above methods, which will not be repeated here.

Figure 11 is a schematic diagram of the structure of a terminal 1100 (e.g., user equipment) proposed in an embodiment of the present disclosure. Terminal 1100 can be a chip, chip system, or processor that supports a network device implementing any of the above methods, or a chip, chip system, or processor that supports a terminal implementing any of the above methods. Terminal 1100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

As shown in Figure 11, terminal 1100 includes one or more processors 1101. Processor 1101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Terminal 1100 is used to perform any of the above methods.

In some embodiments, the terminal 1100 further includes one or more memories 1102 for storing instructions. Optionally, all or part of the memories 1102 may be located outside the terminal 1100.

In some embodiments, the terminal 1100 further includes one or more transceivers 1104. When the terminal 1100 includes one or more transceivers 1104, the transceiver 1104 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step 202, step 203, step 205, step 206, step 207, step 209, step 210, step 502, step 503, step 601, step 603, step 604, step 606, step 701, step 702, but not limited thereto), and the processor 1101 performs at least one of the other steps (for example, step 201, step 204, step 208, step 501, step 602, step 605, but not limited thereto).

In some embodiments, a transceiver may include a receiver and/or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

In some embodiments, terminal 1100 may include one or more interface circuits 1103. Optionally, interface circuit 1103 is connected to memory 1102. Interface circuit 1103 may be configured to receive signals from memory 1102 or other devices, and may be configured to send signals to memory 1102 or other devices. For example, interface circuit 1103 may read instructions stored in memory 1102 and send the instructions to processor 1101.

The terminal 1100 described in the above embodiment may be a communication device such as a user device, but the scope of the terminal 1100 described in the present disclosure is not limited thereto, and the structure of the terminal 1100 may not be limited by FIG. 11 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

FIG12 is a schematic diagram of the structure of a chip 1200 according to an embodiment of the present disclosure. In the case where the terminal 1100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 1200 shown in FIG12 , but the present disclosure is not limited thereto.

The chip 1200 includes one or more processors 1201 , and the chip 1200 is configured to execute any of the above methods.

In some embodiments, chip 1200 further includes one or more 1203. Optionally, interface circuit 1203 is connected to memory 1202. Interface circuit 1203 can be used to receive signals from memory 1202 or other devices, and interface circuit 1203 can be used to send signals to memory 1202 or other devices. For example, interface circuit 1203 can read instructions stored in memory 1202 and send the instructions to processor 1201.

In some embodiments, the interface circuit 1203 executes at least one of the communication steps such as sending and/or receiving in the above method (for example, step 202, step 203, step 205, step 206, step 207, step 209, step 210, step 502, step 503, step 601, step 603, step 604, step 606, step 701, step 702, but not limited to these), and the processor 1201 executes at least one of the other steps (for example, step 201, step 204, step 208, step 501, step 602, step 605, but not limited to these).

In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

In some embodiments, chip 1200 further includes one or more memories 1202 for storing instructions. Alternatively, all or part of memory 1202 may be external to chip 1200.

The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the terminal 1100, the terminal 1100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

The present disclosure also provides a program product, which, when executed by the terminal 1100, enables the terminal 1100 to perform any of the above methods. Optionally, the program product is a computer program product.

The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims (27)

A communication method, characterized in that the method comprises: The site device determines a first wireless frame; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: a first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: a media access control MAC address of a target AP to which the site device roams or switches, or a MAC address of a multi-link access point device AP MLD to which the target AP is attached; The first radio frame is sent. The communication method according to claim 1, wherein the first wireless frame further includes at least one of the following: First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP; First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP; Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP; Robust Security Network Element (RSNE) information of the site equipment; The robust security network extension RSNXE information element of the site equipment. The communication method according to any one of claims 1 or 2 is characterized in that the release information includes: link ID information of each link when the site device is disassociated from the first AP, or the MAC address of the first AP, or the MAC address of the AP MLD to which the first AP is attached. The communication method according to any one of claims 1 to 3, wherein the first wireless frame includes at least one of the following: Basic service set switching management BTM request frame, link reconfiguration request frame, and newly defined wireless frame. The communication method according to any one of claims 1 to 4, characterized in that after sending the first wireless frame, the method comprises: Receive a second wireless frame sent by the first AP; wherein the second wireless frame includes fourth identification information, and the fourth identification information: identifies whether the first AP accepts the site device to be disassociated from it; and/or whether the first AP allows the site device to switch or roam to the target AP. The communication method according to claim 5, wherein the second wireless frame further includes at least one of the following: RSNE information of the target AP; The RSNXE information element of the target AP; The MAC address of the target AP; The Internet Protocol IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address. The communication method according to claim 5 or 6, wherein the second wireless frame includes at least one of the following: BTM response frame, link reconfiguration response frame, and newly defined wireless frame. A communication method, characterized in that the method comprises: The first AP receives a first wireless frame sent by a site device; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is affiliated. The communication method according to claim 8, wherein after the first AP receives the first wireless frame sent by the station device, the method comprises: Determining a handover trigger frame or a roaming trigger frame; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information; Sending the handover trigger frame or the roaming trigger frame to the target AP. The communication method according to claim 9, wherein the handover trigger frame or the roaming trigger frame further includes at least one of the following: First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP; First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP; Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP; RSNE information of the site device; the RSNE information is carried in the first radio frame, or is obtained by the first AP during an association process with the site device; The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device. The communication method according to claim 9 or 10, characterized in that after sending the handover trigger frame or the roaming trigger frame to the target AP, the method includes: Receive a response frame sent by the target AP; wherein the response frame includes: third identification information, the third identification information identifying whether the target AP accepts the site device switching or roaming to the target AP. The communication method according to claim 11, wherein the response frame further includes at least one of the following: RSNE information of the target AP; The RSNXE information element of the target AP; The MAC address of the target AP; The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address. The communication method according to claim 12, wherein after receiving the response frame sent by the target AP, the method comprises: Determine a second wireless frame; wherein the second wireless frame includes fourth identification information, the fourth identification information: identifies whether the first AP accepts the site device to be disassociated from it; and/or whether the first AP allows the site device to switch or roam to the target AP; The second radio frame is sent. The communication method according to claim 13, wherein the second wireless frame further includes at least one of the following: RSNE information of the target AP; The RSNXE information element of the target AP; The MAC address of the target AP; The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address. The communication method according to claim 13 or 14, wherein the second wireless frame includes at least one of the following: BTM response frame, link reconfiguration response frame, and newly defined wireless frame. A communication method, characterized in that the method comprises: The target AP receives a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information; The first identification information identifies: a site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached. The communication method according to claim 16, wherein the handover trigger frame or the roaming trigger frame further includes at least one of the following: First link ID information, identifying the target AP as a multi-connection device, and multiple links established between the station device and the target AP; First MAC address information, identifying the target AP as a multi-connection device, and the MAC address of the station device under each link established with the target AP; Second MAC address information, identifying a MAC address of the station device in each link disassociated from the first AP; RSNE information of the site device; the RSNE information is carried in a first radio frame sent by the site device, or is obtained by the first AP during an association process with the site device; The RSNXE information element of the site device; the RSNXE information element is carried in the first radio frame, or is obtained by the first AP from a process of associating with the site device. The communication method according to claim 16 or 17, wherein after receiving the handover trigger frame or the roaming trigger frame sent by the first AP, the method comprises: Sending a response frame to the first AP; wherein the response frame includes: third identification information, the third identification information identifying whether the target AP accepts the site device switching or roaming to the target AP. The communication method according to claim 18, wherein the response frame further includes at least one of the following: RSNE information of the target AP; The RSNXE information element of the target AP; The MAC address of the target AP; The IP address information of the target AP; wherein the IP address information is the reused IP address of the first AP or a new IP address. A communication device, wherein the communication device is a site device, wherein the site device comprises: A determination module is configured to determine a first wireless frame; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: a first access point device AP with which the station device is associated, and disassociation information; the second identification information identifies: a MAC address of a target AP to which the station device roams or switches, or a MAC address of an AP MLD to which the target AP is attached; A sending module is used to send the first wireless frame. A communication device is provided, wherein the communication device is a first AP, wherein the first AP includes: The first receiving module is used to receive a first wireless frame sent by a site device; wherein the first wireless frame includes first identification information and second identification information; the first identification information identifies: the first access point device AP with which the site device is associated, and disassociation information; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached. A communication device, wherein the communication device is a target AP, wherein the target AP comprises: A second receiving module is configured to receive a handover trigger frame or a roaming trigger frame sent by the first AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information; The first identification information identifies: a site device associated with the first AP, requesting to disassociate from the first AP; the second identification information identifies: the MAC address of the target AP to which the site device roams or switches, or the MAC address of the AP MLD to which the target AP is attached. A communication device, wherein the communication device is a site device, characterized by comprising: one or more processors; The site device is configured to execute the communication method according to any one of claims 1 to 7. A communication device, wherein the communication device is a first AP, characterized by comprising: one or more processors; The first AP is used to execute the communication method according to any one of claims 8 to 15. A communication device, wherein the communication device is a target AP, characterized by comprising: one or more processors; The target AP is used to execute the communication method according to any one of claims 16 to 19. A communication system, characterized by comprising a site device, a first AP, and a target AP; The site device determines and sends a first wireless frame to the first AP; wherein the first wireless frame includes the first identification information and and second identification information; the first identification information identifies: the first access point device AP associated with the site device, and the disassociation release information; the second identification information identifies: the media access control MAC address of the target AP to which the site device roams or switches, or the MAC address of the multi-connection access point device AP MLD to which the target AP is attached; The first AP receives the first wireless frame sent by the site device, determines and sends a handover trigger frame or a roaming trigger frame to the target AP; wherein the handover trigger frame or the roaming trigger frame includes the first identification information and the second identification information; The target AP receives the handover trigger frame or the roaming trigger frame. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes the communication method according to any one of claims 1 to 7, or executes the communication method according to any one of claims 8 to 15, or executes the communication method according to any one of claims 16 to 19.