Communication method, communication device and communication system

Abstract

The embodiment of the invention relates to a communication method, communication equipment and a communication system. The communication method comprises the following steps: when first station equipment STA monitors a physical layer protocol data unit (inter-BSS PPDU) between first basic service sets, and a first condition is satisfied, the first STA is switched from a primary channel to a secondary channel; wherein the first condition comprises that a first access point device (AP) supports switching to a secondary channel for communication; wherein the first AP is associated with the first STA; a first basic service set BSS corresponding to the first inter-BSS PPDU is a BSS where the second AP is located; wherein the second AP is an AP monitored by the first AP; the second AP is not associated with the first STA; the duration of the first inter-BSS PPDU occupying the main channel is greater than the first duration; wherein the first duration is a duration threshold value for switching from the primary channel to the secondary channel; in this way, the interference of the first inter-BSS PPDU on the data transmission of the first AP and the first STA in the main channel can be avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a communication device and a communication system. BACKGROUND

[0002] At present, the contents researched by Wi-Fi technology, such as Ultra High Reliability (UHR), have the vision of improving the reliability of Wireless Local Area Networks (WLAN) connection, reducing the delay, improving the manageability, increasing the throughput under different Signal to Noise Ratio (SNR) levels and reducing the device-level power consumption, etc.

[0003] In UHR, in order to improve the throughput of the system and reduce the communication delay, when the primary channel senses busy, the device can switch to the secondary channel to communicate, therefore, it is necessary to further perfect the channel switching mechanism of the device to meet the transmission requirements of UHR. SUMMARY

[0004] Embodiments of the present disclosure provide a communication method, a communication device and a communication system to provide a further channel switching mechanism.

[0005] In a first aspect, embodiments of the present disclosure provide a communication method, executed by a first station device STA, comprising:

[0006] switching from a primary channel to a secondary channel in a case that the first STA listens to an inter-BSS PPDU between first basic service sets and a first condition is met; wherein the first condition comprises:

[0007] a first access point device AP supports switching to the secondary channel to communicate; wherein the first AP is associated with the first STA;

[0008] a first basic service set BSS corresponding to the first inter-BSS PPDU is a BSS where a second AP is located; wherein the second AP is an AP listened to by the first AP; the second AP is not associated with the first STA;

[0009] a duration that the first inter-BSS PPDU occupies the primary channel is greater than a first duration; wherein the first duration is a duration threshold of switching from the primary channel to the secondary channel.

[0010] In a second aspect, embodiments of the present disclosure further provide a communication method, executed by a first access point device AP, comprising:

[0011] switch from the primary channel to the secondary channel in a case that a second inter-BSS physical layer protocol data unit (inter-BSS PPDU) is detected by the first AP and a second condition is met, wherein the second condition comprises:

[0012] at least one second station (STA) associated with the first AP supports switching to the secondary channel for communication;

[0013] a fourth basic service set (BSS) corresponding to the second inter-BSS PPDU is a BSS in which a fifth AP is located, wherein the fifth AP is an AP detected by the second STA and the fifth AP is a neighbor AP of the first AP;

[0014] a duration that the second inter-BSS PPDU occupies the primary channel is greater than a first duration, wherein the first duration is a duration threshold for switching from the primary channel to the secondary channel.

[0015] In a third aspect, the embodiments of the present disclosure further provide a communication device, which comprises a first station (STA), and the first STA comprises:

[0016] a first processing module, configured to switch from a primary channel to a secondary channel in a case that a first inter-BSS physical layer protocol data unit (inter-BSS PPDU) is detected by the first STA and a first condition is met, wherein the first condition comprises:

[0017] a first access point (AP) supports switching to the secondary channel for communication, wherein the first AP is associated with the first STA;

[0018] a first basic service set (BSS) corresponding to the first inter-BSS PPDU is a BSS in which a second AP is located, wherein the second AP is an AP detected by the first AP and the second AP is not associated with the first STA;

[0019] a duration that the first inter-BSS PPDU occupies the primary channel is greater than a first duration, wherein the first duration is a duration threshold for switching from the primary channel to the secondary channel.

[0020] In a fourth aspect, the embodiments of the present disclosure further provide a communication device, which comprises a first access point (AP), and the first AP comprises:

[0021] a second processing module, configured to switch from a primary channel to a secondary channel in a case that a second inter-BSS physical layer protocol data unit (inter-BSS PPDU) is detected by the first AP and a second condition is met, wherein the second condition comprises:

[0022] at least one second station device STA associated with the first AP supports switching to the secondary channel for communication;

[0023] a fourth basic service set BSS corresponding to the second inter-BSS PPDU is a BSS where a fifth AP is located; the fifth AP is an AP listened to by the second STA, and the fifth AP is a neighbor AP of the first AP;

[0024] the second inter-BSS PPDU occupies the primary channel for a time period longer than a first time period; the first time period is a time threshold for switching from the primary channel to the secondary channel.

[0025] In a fifth aspect, the embodiments of the present disclosure further provide a communication device, the communication device comprising a first station device STA, comprising:

[0026] one or more processors;

[0027] The communication device is configured to perform the communication method of the first aspect of the embodiments of the present disclosure.

[0028] In a sixth aspect, the embodiments of the present disclosure further provide a communication device, the communication device comprising a first access point device AP, comprising:

[0029] one or more processors;

[0030] The communication device is configured to perform the communication method of the second aspect of the embodiments of the present disclosure.

[0031] In a seventh aspect, the embodiments of the present disclosure further provide a communication system, comprising a first station device STA and a first access point device AP; the first STA is associated with the first AP;

[0032] The first STA is configured to switch from a primary channel to a secondary channel in a case where the first STA listens to a first inter-BSS PPDU between first basic service sets and a first condition is met; the first condition comprises:

[0033] The first AP supports switching to the secondary channel for communication;

[0034] A first basic service set BSS corresponding to the first inter-BSS PPDU is a BSS where a second AP is located; the second AP is an AP listened to by the first AP; the second AP is not associated with the first STA;

[0035] The first inter-BSS PPDU occupies the primary channel for a duration greater than a first duration; wherein the first duration is a threshold duration for switching from the primary channel to the secondary channel.

[0036] In an eighth aspect, the embodiments of the present disclosure further provide a communication system, comprising at least one second station device STA and a first access point device AP; the second STA is associated with the first AP;

[0037] The first AP is configured to switch from the primary channel to the secondary channel when the second inter-BSS PPDU is detected by the first AP and a second condition is met; wherein the second condition comprises:

[0038] The second STA supports switching to the secondary channel for communication;

[0039] The fourth BSS corresponding to the second inter-BSS PPDU is a BSS where a fifth AP is located; wherein the fifth AP is an AP detected by the second STA, and the fifth AP is a neighbor AP of the first AP;

[0040] The first inter-BSS PPDU occupies the primary channel for a duration greater than a first duration; wherein the first duration is a threshold duration for switching from the primary channel to the secondary channel.

[0041] In a ninth aspect, the embodiments of the present disclosure further provide a storage medium, which stores instructions, when the instructions are executed on a communication device, the communication device performs the communication method according to the first aspect of the embodiments of the present disclosure, or performs the communication method according to the second aspect of the embodiments of the present disclosure.

[0042] In the embodiments of the present disclosure, after the first STA detects the first inter-BSS PPDU, the first STA switches from the primary channel to the secondary channel when the first AP associated with the first STA supports switching to the secondary channel for communication, the first BSS corresponding to the first inter-BSS PPDU is a BSS where the second AP is located, and the first inter-BSS PPDU occupies the primary channel for a duration greater than a first duration; in this way, interference caused by the first inter-BSS PPDU to data transmission of the first AP and the first STA on the primary channel can be avoided.

[0043] Additional aspects and advantages of the embodiments of the present disclosure will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0044] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0045] Figure 1 This is a schematic diagram of the architecture of the communication system provided in the embodiments of this disclosure;

[0046] Figure 2 This is one of the interactive schematic diagrams of the communication method provided in the embodiments of this disclosure;

[0047] Figure 3 This is the second interactive schematic diagram of the communication method provided in the embodiments of this disclosure;

[0048] Figure 4 This is one of the scenario diagrams illustrating the communication method provided in this embodiment of the disclosure;

[0049] Figure 5 This is a second scenario illustration of the communication method provided in this embodiment of the disclosure;

[0050] Figure 6 This is the third interactive schematic diagram of the communication method provided in this embodiment of the disclosure;

[0051] Figure 7 This is the fourth interactive schematic diagram of the communication method provided in the embodiments of this disclosure;

[0052] Figure 8 This is one of the flowcharts illustrating the communication method provided in this embodiment of the disclosure;

[0053] Figure 9 This is a second schematic flowchart of the communication method provided in the embodiments of this disclosure;

[0054] Figure 10 This is the third flowchart illustrating the communication method provided in this embodiment of the disclosure;

[0055] Figure 11 This is the fourth flowchart illustrating the communication method provided in this embodiment of the disclosure;

[0056] Figure 12 This is one of the structural schematic diagrams of the communication device proposed in the embodiments of this disclosure;

[0057] Figure 13 This is the second schematic diagram of the communication device proposed in the embodiments of this disclosure;

[0058] Figure 14 This is a schematic diagram of the terminal structure proposed in the embodiments of this disclosure;

[0059] Figure 15 This is a schematic diagram of the chip structure proposed in the embodiments of this disclosure. Detailed Implementation

[0060] This disclosure presents a communication method, communication device, and communication system.

[0061] In a first aspect, embodiments of this disclosure provide a communication method executed by a first site device (STA), the method comprising:

[0062] If the first STA detects an inter-BSS PPDU between the first basic service sets and a first condition is met, the STA switches from the primary channel to the secondary channel; wherein the first condition includes:

[0063] The first access point device (AP) supports switching to the secondary channel for communication; wherein, the first AP is associated with the first STA;

[0064] The first basic service set (BSS) corresponding to the first inter-BSS PPDU is the BSS where the second AP is located; wherein, the second AP is the AP that the first AP is listening to; the second AP is not associated with the first STA;

[0065] The duration of the first inter-BSS PPDU occupying the primary channel is greater than a first duration; wherein the first duration is a threshold duration for switching from the primary channel to the secondary channel.

[0066] In the above embodiment, after the first STA detects the first inter-BSS PPDU, if the first STA obtains that the first AP associated with the first STA supports switching to the secondary channel for communication, and the first BSS corresponding to the first inter-BSS PPDU is the BSS where the second AP is located, and the duration of the first inter-BSS PPDU occupying the main channel is greater than the first duration, then the STA switches from the main channel to the secondary channel; in this way, the first inter-BSS PPDU can avoid interfering with the data transmission of the first AP and the first STA on the main channel.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, before the first STA detects the first inter-BSS PPDU, the method further includes:

[0068] A first radio frame is determined; wherein the first radio frame includes first identification information and second identification information; the first identification information indicates whether the first STA supports switching to the secondary channel for communication; the second identification information indicates the identification information of the second BSS where the third AP is located, and the third AP is at least one AP other than the first AP that the first STA has been listening to;

[0069] The first wireless frame is sent to the first AP.

[0070] In this embodiment of the disclosure, the first STA identifies whether it supports switching to the secondary channel for communication through the first identification information in the first radio frame, and identifies the identification information of the second BSS where the third AP is located through the second identification information in the first radio frame. By sending the first radio frame to the first AP, the information on whether the first STA supports switching to the secondary channel for communication and the identification information of the second BSS can be provided to the first AP. In this way, the first AP can determine whether it can switch to the secondary channel based on the first identification information and the second identification information, so as to continue communicating with the first STA on the secondary channel.

[0071] In conjunction with some embodiments of the first aspect, in some embodiments, the parameter value of the first identification information is set to a first parameter value, wherein the first identification information indicates that the first STA supports switching to the secondary channel for communication.

[0072] In conjunction with some embodiments of the first aspect, in some embodiments, the second AP is any of the third APs.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the first identification information is carried in the Ultra-High Reliability (UHR) capability element of the first radio frame, and the second identification information is carried in the Overlapping Service Set (OBSS) list element of the first radio frame.

[0074] In conjunction with some embodiments of the first aspect, in some embodiments, before the first STA detects the first inter-BSS PPDU, the method further includes:

[0075] Receive a second wireless frame sent by the first AP; wherein the second wireless frame includes third identification information, fourth identification information, fifth identification information and sixth identification information;

[0076] The third identification information indicates whether the first AP supports switching to the secondary channel for communication; the fourth identification information indicates the parameter information of the secondary channel; the fifth identification information indicates the first duration; the sixth identification information indicates the identification information of the third BSS where the fourth AP is located, and the fourth AP is at least one AP that the first AP has been monitoring.

[0077] In this embodiment, the STA receives a second radio frame sent by the first AP, and obtains whether the first AP supports switching to the secondary channel for communication through the third identification information in the second radio frame; obtains the parameter information of the secondary channel through the fourth identification information in the second radio frame; obtains the first duration through the fifth identification information in the second radio frame; and obtains the identification information of the third BSS where the fourth AP is located through the sixth identification information in the second radio frame. In this way, after listening to the first inter-BSS PPDU, the first STA can determine whether it can switch to the secondary channel according to the content of the second radio frame to continue communicating with the first AP on the secondary channel.

[0078] In conjunction with some embodiments of the first aspect, in some embodiments, the third identification information is carried in the UHR capability element of the second radio frame, the fourth and fifth identification information are carried in the UHR operation element or the Non-Master Channel Access (NPCA) element of the second radio frame, and the sixth identification information is carried in the neighbor report element, the reduced neighbor report element, or the OBSS list element of the second radio frame.

[0079] Secondly, embodiments of this disclosure provide a communication method executed by a first access point device (AP), the method comprising:

[0080] If the first AP detects an inter-BSS PPDU between two basic service sets and meets a second condition, it switches from the primary channel to the secondary channel; wherein the second condition includes:

[0081] At least one second site device (STA) associated with the first AP supports switching to the secondary channel for communication;

[0082] The fourth basic service set BSS corresponding to the second inter-BSS PPDU is the BSS where the fifth AP is located; wherein, the fifth AP is the AP that the second STA is listening to, and the fifth AP is the neighbor AP of the first AP; the fifth AP is not associated with the second STA;

[0083] The second inter-BSS PPDU occupies the main channel for a duration longer than the first duration; wherein the first duration is the duration threshold for switching from the main channel to the secondary channel.

[0084] In conjunction with some embodiments of the second aspect, in some embodiments, before the first AP detects the second inter-BSS PPDU, the method further includes:

[0085] Receive a third radio frame sent by the second STA; wherein the third radio frame includes a seventh identification information and an eighth identification information;

[0086] The seventh identification information indicates whether the second STA supports switching to the secondary channel for communication; the eighth identification information indicates the identification information of the fifth BSS where the sixth AP is located, wherein the sixth AP is at least one AP other than the first AP that the second STA has been listening to.

[0087] In conjunction with some embodiments of the second aspect, in some embodiments, the parameter value of the seventh identification information is set to a first parameter value, and the seventh identification information indicates that the second STA supports switching to the secondary channel for communication.

[0088] In conjunction with some embodiments of the second aspect, in some embodiments, the fifth AP is any one of the sixth APs.

[0089] In conjunction with some embodiments of the second aspect, in some embodiments, the seventh identification information is carried in the Ultra-High Reliability Capability (UHR) element of the third radio frame, and the eighth identification information is carried in the Overlapping Service Set List (OBSS) element of the third radio frame.

[0090] In conjunction with some embodiments of the second aspect, in some embodiments, before the first AP detects the second inter-BSS PPDU, the method further includes:

[0091] A second radio frame is determined; wherein the second radio frame includes third identification information, fourth identification information, fifth identification information, and sixth identification information;

[0092] The third identification information indicates whether the first AP supports switching to the secondary channel for communication; the fourth identification information indicates the parameter information of the secondary channel; the fifth identification information indicates the first duration; the sixth identification information indicates the identification information of the third BSS where the fourth AP is located, and the fourth AP is at least one neighboring AP that the first AP has been monitoring;

[0093] The second radio frame is sent to the second STA.

[0094] In conjunction with some embodiments of the second aspect, in some embodiments, the third identification information is carried in the UHR capability element of the second radio frame, the fourth and fifth identification information are carried in the UHR operation element or the Non-Main Channel Access (NPCA) element of the second radio frame, and the sixth identification information is carried in the neighbor report element, the reduced neighbor report element, or the Overlapping Service Set List element of the second radio frame.

[0095] Thirdly, embodiments of this disclosure also provide a communication device, which includes a first station device (STA) and a first processing module; wherein the communication device is used to execute an optional implementation of the first aspect.

[0096] Fourthly, embodiments of this disclosure also provide a communication device, which includes a first access point device (AP) and the first AP includes a second processing module; wherein the communication device is used to execute an optional implementation of the second aspect.

[0097] Fifthly, embodiments of this disclosure also provide a communication device, including:

[0098] One or more processors;

[0099] The communication device is used to execute an optional implementation of the first aspect.

[0100] Sixthly, embodiments of this disclosure also provide a communication device, including:

[0101] One or more processors;

[0102] The communication device is used to execute an optional implementation of the second aspect.

[0103] In a seventh aspect, embodiments of this disclosure also provide a communication system, including a first site device (STA) and a first access point device (AP); the first STA is associated with the first AP;

[0104] The first STA is configured to perform the optional implementation as described in the first aspect.

[0105] Eighthly, embodiments of this disclosure also provide a communication system, including at least one second site device (STA) and a first access point device (AP); the second STA is associated with the first AP;

[0106] The first AP is configured to perform the optional implementation as described in the second aspect.

[0107] In a ninth aspect, embodiments of this disclosure also provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the optional implementation described in the first or second aspect.

[0108] In a tenth aspect, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in an optional implementation of the first or second aspect.

[0109] In one aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in an optional implementation of the first or second aspect.

[0110] In a twelfth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described in an optional implementation of the first or second aspect above.

[0111] It is understood that the aforementioned communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0112] This disclosure provides communication methods, communication devices, and communication systems. In some embodiments, the terms "communication method" and "signal transmission method," "wireless frame transmission method," etc., can be used interchangeably, as can the terms "information processing system" and "communication system."

[0113] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular 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 particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0114] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0115] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0116] In the embodiments disclosed herein, "multiple" refers to two or more.

[0117] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0118] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0119] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0120] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0121] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0122] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0123] In some embodiments, the terms “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 lower than”, and “above” can be used interchangeably, as can the terms “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”.

[0124] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0125] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0126] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0127] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0128] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0129] Figure 1 This is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0130] like Figure 1 As shown, the communication system 100 includes a station (STA) 101 and an access point (AP) 102.

[0131] In some embodiments, site device 101 may include, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports Wi-Fi communication. Optionally, the wireless communication terminal may be at least one of, but is not limited to, a mobile phone, a wearable device, an IoT device that supports Wi-Fi communication, a car with Wi-Fi communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, 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 a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home.

[0132] Specifically, site device 101 can be a terminal device or network device with a Wi-Fi chip. Optionally, site device 101 can 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 to these.

[0133] In some embodiments, the access point device 102 can be an access point for mobile terminals to access a wired network. An AP acts as a bridge connecting wired and wireless networks, its main function being to connect various wireless network clients together and then connect the wireless network to an Ethernet network. Specifically, an AP can be a terminal device or network device with a wireless fidelity chip. Optionally, the AP can support various 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 to these.

[0134] Optionally, in this embodiment of the disclosure, the number of STAs in the communication system may also include one or more, for example, it may include a first site device 1011 and a second site device 1012. This embodiment of the disclosure does not impose a specific limitation on this. The number of APs may include one or more, for example, it may include a first access point device 1021 and a second access point device 1022.

[0135] Optionally, in this embodiment of the disclosure, AP and STA can be devices that support multiple connections. For example, they can be represented as Access Point Multi-Link Device (AP MLD) and Non-Access Point Multi-Link Device (Non-AP MLD), respectively. AP MLD can represent an access point that supports multiple connection communication functions, and non-AP MLD can represent a station that supports multiple connection communication functions.

[0136] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0137] The following embodiments of this disclosure can be applied to Figure 1 The communication system 100 shown, or a part thereof, but not limited to it. Figure 1 The entities shown are illustrative; a communication system may include... Figure 1 All or part of the main body, or may include Figure 1 Other entities besides the main body, the number and form of each entity are arbitrary, each entity can be physical or virtual, the connection relationship between the entities is illustrative, the entities can be unconnected or connected, and the connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0138] The embodiments disclosed herein can be applied to Wireless Local Area Networks (WLANs), such as LANs using the 802.11 series of protocols. In a WLAN, a Basic Service Set (BSS) is a fundamental component. An BSS network consists of site devices with some association within a specific coverage area. One type of association is where sites communicate directly with each other in a self-organizing network; this is called an Independent Basic Service Set (IBSS). Another more common scenario is that in a BSS network, there is only one central site dedicated to managing the BSS, called an Access Point (AP) device, while other sites in the BSS network that are not APs are called terminals, also known as non-AP STAs. APs and non-AP STAs are collectively referred to as STAs. When describing STAs, it is not necessary to distinguish between APs and non-AP STAs. Within the same BSS network, due to distance, transmission power, etc., a STA cannot detect other STAs that are far away; they are each other's hidden nodes.

[0139] In WLANs, channels are typically divided into primary channels and secondary channels (or non-primary channels, also known as auxiliary channels or non-primary channels). A secondary channel can contain one or more sub-channels. For example, if the basic bandwidth unit is 20MHz, when the channel bandwidth is 20MHz, there is only one primary channel with a bandwidth of 20MHz; when the channel bandwidth is greater than 20MHz, there is one primary channel with a bandwidth of 20MHz, and the remaining one or more 20MHz channels are auxiliary channels. The primary 20MHz channel is the common operating channel for stations belonging to members of the basic service set (BSS). Station devices within the BSS can compete for channel resources on the primary 20MHz channel.

[0140] During the channel contention process, if the primary channel is busy, such as when the Tunneled Direct Link Setup (TDLS) Transmit Opportunity (TXOP) or OBSS TXOP is busy, in order to make full use of channel resources, the system can switch to an auxiliary channel to communicate with the site equipment. The site equipment is scheduled to the auxiliary channel to send and receive data, thereby improving the throughput of the communication system and maximizing the utilization of channel resources.

[0141] Specifically, TDLS TXOP busy means that the TXOP of the same BSS is busy. For example, if the TXOP is occupied by other devices in the same BSS as the access point device, and the other devices send physical protocol data units (PPDUs) on the main channel, then the main channel is in the TDLS TXOP busy state.

[0142] The OBSSTXOP busy state means that the TXOP of the same OBSS is busy. For example, if it is occupied by other devices in the same OBSS as the access point device, and those other devices are sending PPDUs on the main channel, then the main channel is in the OBSS busy state. If the main channel is in the OBSS busy state,

[0143] As an example, such as Figure 4 As shown, the main channel is, for example... Figure 4 The primary channel is 20MHz; the secondary channel may contain one or more sub-channels, for example... Figure 4 The 20MHz and 40MHz secondary channels are included.

[0144] During the channel contention process, if the main channel is in an OBSS busy state (OBSS interference), such as Figure 4 As shown in the T1 and T2 time periods, if the primary channel is occupied by other devices in the same OBSS as the WLAN, and these other devices are transmitting Physical Protocol Data Units (PPDUs) on the primary channel, then the primary channel is in an OBSS busy state. If the primary channel is in an OBSS busy state, in order to fully utilize channel resources, it can be switched to a secondary channel to improve the communication system throughput and maximize channel resource utilization. For example, switching to a 20MHz secondary channel during time period T1, or switching to a 40MHz secondary channel during time period T2.

[0145] If the main channel is in an idle state, such as Figure 4 As shown in the T3 time period, the AP and STA can send PPDUs to each other.

[0146] Furthermore, when communication occurs on the primary channel (while the secondary channel is busy), and the secondary channel is idle, communication can be aggregated between the primary and secondary channels to improve system throughput; as an example, such as Figure 5 As shown, during the transmission of each frame, the main channel and at least one secondary channel can be aggregated for transmission.

[0147] Figure 2 This is an interactive schematic diagram illustrating a communication method according to an embodiment of this disclosure. For example... Figure 2 As shown, the above method includes:

[0148] Step 201: When the first STA1011 detects the first inter-BSS PPDU (Physical Layer Protocol Data Unit, PPDU stands for Physical Layer (PHY) Protocol Data Unit) and meets the first condition, it switches from the primary channel to the secondary channel; wherein, the first condition includes:

[0149] The first access point device (AP) supports switching to the secondary channel for communication; wherein, the first AP1021 is associated with the first STA1011;

[0150] The first basic service set BSS corresponding to the first inter-BSS PPDU is the BSS where the second AP is located; wherein, the second AP is the AP that the first AP1021 is listening to; the second AP is not associated with the first STA1011;

[0151] The duration of the first inter-BSS PPDU occupying the primary channel is greater than a first duration; wherein the first duration is a threshold duration for switching from the primary channel to the secondary channel.

[0152] Typically, before sending data, each site device on the network needs to listen for other data being transmitted on the channel. This is done, for example, through a carrier sense mechanism, to determine whether the channel is busy or idle. The carrier sense mechanism can include two methods: physical carrier sense and virtual carrier sense. The channel is considered idle only when both physical and virtual carrier sense indicate that the channel is idle.

[0153] Virtual carrier sensing (VCS) determines channel availability by using a Network Allocation Vector (NAV) maintained by the device. The NAV can be understood as a timer defining the duration for which the channel should be occupied. During data communication, the device occupying the channel informs other devices of the channel occupancy time via the duration field in the data packet. Devices not acquiring channel resources maintain or update their own NAV values ​​by comparing them with the values ​​in the duration field of received data packets. When the NAV value is zero, VCS considers the channel to be idle.

[0154] HE STA (HE stands for High efficiency) typically maintains two NAVs: Intra-BSS NAV and Basic NAV. Virtual carrier sensing considers the current channel to be idle if and only if both NAVs are zero; otherwise, it considers the current channel to be busy.

[0155] When a device detects that the primary channel is busy, it considers the channel busy, fails to compete for the channel, and cannot perform frame switching on the primary channel. Generally, in a BSS with an operating bandwidth greater than 20MHz, the transmission channel of the PPDU includes the 20MHz primary channel. When the primary channel is busy, even if the secondary channel within the BSS is idle, the device cannot perform frame switching on the secondary channel. On the one hand, this leads to low bandwidth system efficiency, limited spectral efficiency, and reduced throughput. On the other hand, if the device's Basic NAV is not zero due to transmissions within other BSSs, causing it to consider the channel busy, it will result in excessive latency for low-latency services within the local BSS.

[0156] To further improve channel access and frequency utilization efficiency in broadband bandwidth and enhance transmission efficiency, a non-primary channel access (NPCA) mechanism is proposed. When the primary channel becomes busy due to traffic communication within the OBSS (Overhead Broadband Service), the device can switch to a non-primary channel (i.e., a secondary channel) and compete for access. After successfully competing for the non-primary channel, the device can perform frame switching within it. For example, there are two types of STAs within BSS1. The first type of STA can listen to the traffic (OBSS Traffic) transmitted by its neighbor BSS2, while the second type of STA is a hidden node relative to AP2 and cannot listen to OBSS Traffic. When AP1 and the first type of STA perceive the primary channel as busy due to OBSS Traffic, they can switch to the secondary channel to compete for access and send or receive frames. However, the second type of STA, unable to listen to OBSS Traffic, remains on the primary channel competing for access or waiting for AP1 to send downlink data. In this case, AP1 may switch to the secondary channel and successfully access it, sending downlink data to the second type of STA, but packet loss will occur because the second type of STA remains on the primary channel. Therefore, some signaling and procedures are needed to standardize the NPCA mechanism.

[0157] Optionally, the second AP is the AP that the first AP1021 listens to and is not associated with the first STA1011; after the first STA1011 listens to the first inter-BSS PPDU, if the first BSS corresponding to the first inter-BSS PPDU is the BSS where the second AP is located, it can be determined that the first AP can also listen to the first inter-BSS PPDU, and the first inter-BSS PPDU will interfere with the communication process between the first AP1021 and the first STA1011 on the main channel.

[0158] Optionally, the first duration is a threshold for the duration of switching from the primary channel to the secondary channel; after the first inter-BSS PPDU is detected by the first STA1011, if the duration of the first inter-BSS PPDU occupying the primary channel is greater than the first duration, it can be determined that during the busy period of the primary channel, there will always be OBSS PPDU exchange.

[0159] Optionally, the secondary channel can be pre-negotiated between the first STA1011 and the first AP1021. For example, the first STA1011 can obtain the parameter information of the secondary channel through the fourth identification information in the second radio frame sent by the first AP1021.

[0160] In this embodiment of the disclosure, after the first STA1011 detects the first inter-BSS PPDU, if the first STA1011 obtains that the first AP1021 associated with the first STA1011 supports switching to the secondary channel for communication, and the first BSS corresponding to the first inter-BSS PPDU is the BSS where the second AP is located, and the duration of the first inter-BSS PPDU occupying the main channel is greater than a first duration, then the system switches from the main channel to the secondary channel. In this way, the PPDU exchange within the first BSS can be prevented from interfering with the data transmission of the first AP1021 and the first STA1011 on the main channel.

[0161] In some embodiments, such as Figure 3 As shown, prior to step 201, the method further includes:

[0162] Step 301, the first STA1011 determines the first radio frame; wherein, the first radio frame includes first identification information and second identification information; the first identification information indicates whether the first STA1011 supports switching to the secondary channel for communication; the second identification information indicates the identification information of the second BSS where the third AP is located, and the third AP is at least one AP other than the first AP1021 that the first STA1011 has detected.

[0163] Optionally, the first radio frame may include at least one of a Probe Request frame, an Association Request frame, and a Reassociation Request frame.

[0164] Optionally, the identification information of the second BSS may include, but is not limited to, the identifier (BSSID) of the second BSS, the BSS color (Basic Service Set color) of the second BSS, etc., and this disclosure embodiment does not limit this.

[0165] In conjunction with some embodiments of the first aspect, in some embodiments, the first identification information is carried in the Ultra High Reliability (UHR) capability element of the first radio frame, and the second identification information is carried in the Overlapping Service Set (OBSS) list element of the first radio frame.

[0166] Optionally, in some embodiments, the parameter value of the first identification information is set to a first parameter value, and the first identification information indicates that the first STA1011 supports switching to the secondary channel for communication.

[0167] Optionally, the first identification information may include one bit. When the parameter value of this bit is set to a first parameter value (e.g., "1"), it indicates that the first STA1011 supports switching to the secondary channel for communication; when the parameter value of this bit is set to another parameter value (e.g., "0"), it indicates that the first STA1011 does not support switching to the secondary channel for communication.

[0168] Optionally, in some embodiments, the second AP is any one of the third APs.

[0169] In this embodiment of the disclosure, if the first BSS corresponding to the first inter-BSS PPDU is also the BSS where the neighboring AP (i.e., the second AP) of the first AP1021 is located, and the BSS where the first STA1011 can listen to the AP other than the first AP1021 (i.e., the third AP) is located, it can be determined that both the first STA1011 and the first AP1021 can listen to the first inter-BSS PPDU.

[0170] Step 302: The first STA1011 sends the first radio frame to the first AP1021. Correspondingly, the first AP1021 receives the first radio frame sent by the first STA1011.

[0171] In this embodiment, the first STA1011 identifies whether it supports switching to the secondary channel for communication using the first identification information in the first radio frame, and identifies the second BSS where the third AP is located using the second identification information in the first radio frame. By sending this first radio frame to the first AP1021, the first AP1021 is informed whether the first STA1011 supports switching to the secondary channel for communication and the identification information of the second BSS. Thus, when the first AP1021 detects an inter-BSS PPDU, it can determine whether it can switch to the secondary channel to continue communication with the first STA1011 on the secondary channel based on the first and second identification information in the first radio frame.

[0172] Step 303, the first AP1021 determines the second radio frame; wherein the second radio frame includes third identification information, fourth identification information, fifth identification information and sixth identification information;

[0173] The third identification information indicates whether the first AP1021 supports switching to the secondary channel for communication; the fourth identification information indicates the parameter information of the secondary channel; the fifth identification information indicates the first duration; the sixth identification information indicates the identification information of the third BSS where the fourth AP is located, and the fourth AP is at least one AP monitored by the first AP1021.

[0174] Optionally, the second radio frame may include at least one of a beacon frame, a probe response frame, an association response frame, and a reassociation response frame.

[0175] Optionally, the parameter information of the secondary channel may include, but is not limited to, the bandwidth information of the secondary channel, the secondary channel ID information, the spatial stream (SS) information, and the modulation and coding scheme (MCS) information.

[0176] Optionally, in some embodiments, the second AP is simultaneously either the third AP or the fourth AP, that is, both the first STA1011 and the first AP1021 can listen to the first inter-BSS PPDU.

[0177] Optionally, in some embodiments, the third identification information is carried in the UHRcapability element of the second radio frame, the fourth and fifth identification information are carried in the UHRoperation element or the Non-Master Channel Access (NPCA) element of the second radio frame, and the sixth identification information is carried in the neighbor report element, the reduced neighbor report element, or the OBSS list element of the second radio frame.

[0178] Step 304: The first AP1021 sends a second radio frame to the first STA1011. Correspondingly, the first STA1011 receives the second radio frame sent by the first AP1021.

[0179] In this embodiment, the STA receives a second radio frame sent by the first AP1021. Through the third identification information in the second radio frame, it obtains whether the first AP1021 supports switching to the secondary channel for communication; through the fourth identification information in the second radio frame, it obtains the parameter information of the secondary channel; through the fifth identification information in the second radio frame, it obtains the first duration; and through the sixth identification information in the second radio frame, it obtains the identification information of the third BSS where the fourth AP is located. Thus, after listening to the first inter-BSS PPDU, the first STA1011 can determine whether to switch to the secondary channel based on the content of the second radio frame to continue communication with the first AP1021 on the secondary channel.

[0180] Optionally, steps 301 and 303 do not have a specific order, nor do steps 302 and 304. For example, when the second radio frame is a Beacon frame, step 303 precedes step 301, and step 304 precedes step 302; in this case, the first radio frame can be an AssociationRequest frame or a ReassociationRequest frame. As another example, when the first radio frame is a ProbeRequest frame, step 303 follows step 301, and step 304 follows step 302; in this case, the second radio frame can be a ProbeResponse frame.

[0181] As an example, see Figure 6 , Figure 6 An optional implementation of the embodiments of this disclosure is shown, including the following steps:

[0182] Step 601: When the first AP1021 detects the second inter-BSS PPDU and meets the second condition, it switches from the primary channel to the secondary channel; wherein, the second condition includes:

[0183] At least one second STA1012 associated with the first AP1021 supports switching to the secondary channel for communication;

[0184] The fourth BSS corresponding to the second inter-BSS PPDU is the BSS where the fifth AP is located; wherein, the fifth AP is the AP that the second STA is listening to, and the fifth AP is the neighboring AP of the first AP; and, the second STA 1012 can listen to the second inter-BSS PPDU, that is, the second identification information in the first radio frame sent by the second STA 1012 received by the first AP 1021 contains the identification information corresponding to the BSS where the fifth AP is located;

[0185] The second inter-BSS PPDU occupies the main channel for a duration longer than the first duration; wherein the first duration is the duration threshold for switching from the main channel to the secondary channel.

[0186] Optionally, the number of second STA1012 may include one or more. Optionally, the second STA1012 may include the first STA1011 described above.

[0187] Optionally, the fifth AP is the AP that the second STA listens to, and the fifth AP is a neighboring AP of the first AP; after the first AP1021 listens to the second inter-BSS PPDU, if the fourth BSS corresponding to the second inter-BSS PPDU is the BSS where the fifth AP is located, it can be determined that: it can be determined that the second STA can also listen to the second inter-BSS PPDU, and the second inter-BSS PPDU will interfere with the communication process between the first AP1021 and the first STA1011 on the main channel.

[0188] Optionally, the fifth AP may include at least one of the neighboring APs of the first AP 1021.

[0189] Alternatively, the fifth AP can be the same as the second AP described above.

[0190] Optionally, the secondary channel can be pre-negotiated between the second STA1012 and the first AP1021. For example, the first AP1021 can send a second radio frame to the first STA1011 and indicate the parameter information of the secondary channel to the first STA1011 through the fourth identification information in the second radio frame.

[0191] Optionally, the first duration is a threshold for the duration of switching from the primary channel to the secondary channel; after the first AP1021 detects the second inter-BSS PPDU, if the duration of the second inter-BSS PPDU occupying the primary channel is longer than the first duration, it can be determined that during the busy period of the primary channel, there will always be OBSS PPDU exchange.

[0192] In this embodiment of the disclosure, after the first AP1021 detects the second inter-BSS PPDU, if the first AP1021 obtains that at least one second STA1012 associated with the first AP1021 supports switching to the secondary channel for communication, and the fourth BSS corresponding to the second inter-BSS PPDU is the BSS where the fifth AP is located, and the duration of the second inter-BSS PPDU occupying the main channel is greater than the first duration, the switch is made from the main channel to the secondary channel; in this way, the PPDU exchange within the fourth BSS can be avoided from interfering with the data transmission of the first AP1021 and the first STA1011 on the main channel.

[0193] In some embodiments, such as Figure 7 As shown, prior to step 601, the method further includes:

[0194] Step 701, the second STA1012 determines the third radio frame; wherein, the third radio frame includes seventh identification information and eighth identification information;

[0195] The seventh identification information indicates whether the second STA1012 supports switching to the secondary channel for communication; the eighth identification information indicates the identification information of the fifth BSS where the sixth AP is located, wherein the sixth AP is at least one AP other than the first AP1021 that the second STA1012 has been listening to.

[0196] Optionally, in some embodiments, the parameter value of the seventh identification information is set to a first parameter value, and the seventh identification information indicates that the second STA1012 supports switching to the secondary channel for communication.

[0197] Optionally, in some embodiments, the seventh identification information is carried in the Ultra-High Reliability Capability (UHR) element of the third radio frame, and the eighth identification information is carried in the Overlapping Service Set List (OBSS) element of the third radio frame.

[0198] In this embodiment of the disclosure, the content of the third wireless frame can be referred to the description of the first wireless frame mentioned above, and will not be repeated here.

[0199] Optionally, in some embodiments, the fifth AP is any one of the sixth APs.

[0200] In this embodiment of the disclosure, when the fourth BSS corresponding to the second inter-BSS PPDU is also the BSS where the neighboring AP (e.g., the fifth AP) of the first AP1021 is located, and the BSS where the second STA1012 can listen to the AP other than the first AP1021 (i.e., the sixth AP) is located, that is, when both the first AP1021 and the second STA1012 can listen to the second inter-BSS PPDU, it can be determined that the second inter-BSS PPDU will interfere with the communication process between the first AP1021 and the first STA1011 on the main channel.

[0201] Step 702: The second STA1012 sends a third radio frame to the first AP1021.

[0202] Step 703, the first AP1021 determines the second radio frame; wherein the second radio frame includes third identification information, fourth identification information, fifth identification information and sixth identification information;

[0203] The third identification information indicates whether the first AP1021 supports switching to the secondary channel for communication; the fourth identification information indicates the parameter information of the secondary channel; the fifth identification information indicates the first duration; the sixth identification information indicates the identification information of the third BSS where the fourth AP is located, and the fourth AP is at least one neighboring AP that the first AP1021 has detected.

[0204] Optionally, in some embodiments, the third identification information is carried in the UHRcapability element of the second radio frame, the fourth and fifth identification information are carried in the UHRoperation element or the Non-Main Channel Access (NPCA) element of the second radio frame, and the sixth identification information is carried in the neighbor report element, the reduced neighbor report element, or the Overlapping Service Set List element of the second radio frame.

[0205] Step 704: The first AP1021 sends the second radio frame to the second STA1012.

[0206] Optionally, steps 701 and 703 do not have a specific order, nor do steps 702 and 704. For example, when the second radio frame is a Beacon frame, step 703 precedes step 701, and step 704 precedes step 702; in this case, the third radio frame can be an Association Request frame or a Reassociation Request frame. As another example, when the third radio frame is a Probe Request frame, step 703 follows step 701, and step 704 follows step 702; in this case, the second radio frame can be a Probe Response frame.

[0207] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "bit", "data", "program", and "chip" can be used interchangeably.

[0208] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0209] In some embodiments, terms such as wireless access scheme and waveform can be used interchangeably.

[0210] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0211] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0212] 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 receiver to respond to the sent content.

[0213] The communication method involved in the embodiments of this disclosure may include the foregoing steps and at least one of the embodiments. For example, step 201 may be implemented as an independent embodiment, step 301 may be implemented as an independent embodiment, step 303 may be implemented as an independent embodiment, step 601 may be implemented as an independent embodiment, step 701 may be implemented as an independent embodiment, and step 703 may be implemented as an independent embodiment; the combination of step 201 with steps 301, 302, 303, and 304 may be implemented as an independent embodiment, the combination of step 301 with step 302 may be implemented as an independent embodiment, the combination of step 303 with step 304 may be implemented as an independent embodiment, the combination of step 601 with steps 701, 702, 703, and 704 may be implemented as an independent embodiment, the combination of step 701 with step 702 may be implemented as an independent embodiment, and the combination of step 703 with step 704 may be implemented as an independent embodiment, but is not limited thereto.

[0214] In some embodiments, see Figure 7 Other optional implementation methods described before or after the corresponding instruction manual.

[0215] Figure 8 This is one of the flowcharts illustrating a communication method according to an embodiment of the present disclosure.

[0216] like Figure 8 As shown, the above method can be applied to the first STA1011, and the method includes:

[0217] Step 801: When the first STA1011 detects the first inter-BSS PPDU (Physical Layer Protocol Data Unit, PPDU stands for Physical Layer (PHY) Protocol Data Unit) and meets the first condition, it switches from the primary channel to the secondary channel; wherein, the first condition includes:

[0218] The first access point device (AP) supports switching to the secondary channel for communication; wherein, the first AP1021 is associated with the first STA1011;

[0219] The first basic service set BSS corresponding to the first inter-BSS PPDU is the BSS where the second AP is located; wherein, the second AP is the AP that the first AP1021 is listening to; the second AP is not associated with the first STA1011;

[0220] The duration of the first inter-BSS PPDU occupying the primary channel is greater than a first duration; wherein the first duration is a threshold duration for switching from the primary channel to the secondary channel.

[0221] Optionally, the secondary channel can be pre-negotiated between the first STA1011 and the first AP1021. For example, the first STA1011 can obtain the parameter information of the secondary channel through the fourth identification information in the second radio frame sent by the first AP1021.

[0222] For optional implementations of step 801, please refer to [link / reference]. Figure 2 Optional implementation methods for step 201, and Figure 3 Other related parts in the embodiments involved will not be described in detail here.

[0223] In some embodiments, such as Figure 9 As shown, prior to step 801, the method further includes:

[0224] Step 901, the first STA1011 determines the first radio frame; wherein, the first radio frame includes first identification information and second identification information; the first identification information indicates whether the first STA1011 supports switching to the secondary channel for communication; the second identification information indicates the identification information of the second BSS where the third AP is located, and the third AP is at least one AP other than the first AP1021 that the first STA1011 has detected.

[0225] Optionally, in some embodiments, the parameter value of the first identification information is set to a first parameter value, and the first identification information indicates that the first STA1011 supports switching to the secondary channel for communication.

[0226] Optionally, in some embodiments, the second AP is any one of the third APs.

[0227] For optional implementations of step 901, please refer to [link / reference]. Figure 3 Optional implementation methods of step 301, and Figure 2 Other related parts in the embodiments involved will not be described in detail here.

[0228] Step 902: The first STA1011 sends the first radio frame to the first AP1021.

[0229] For optional implementations of step 902, please refer to [link / reference]. Figure 3 Optional implementation methods for step 302, and Figure 3 Other related parts in the embodiments involved will not be described in detail here.

[0230] Step 903: The first STA1011 receives the second radio frame sent by the first AP1021; wherein the second radio frame includes third identification information, fourth identification information, fifth identification information and sixth identification information;

[0231] The third identification information indicates whether the first AP1021 supports switching to the secondary channel for communication; the fourth identification information indicates the parameter information of the secondary channel; the fifth identification information indicates the first duration; the sixth identification information indicates the identification information of the third BSS where the fourth AP is located, and the fourth AP is at least one AP monitored by the first AP1021.

[0232] Optionally, in some embodiments, the second AP is simultaneously either the third AP or the fourth AP, that is, both the first STA1011 and the first AP1021 can listen to the first inter-BSS PPDU.

[0233] Optionally, in some embodiments, the third identification information is carried in the UHRcapability element of the second radio frame, the fourth and fifth identification information are carried in the UHRoperation element or the Non-Master Channel Access (NPCA) element of the second radio frame, and the sixth identification information is carried in the neighbor report element, the reduced neighbor report element, or the OBSS list element of the second radio frame.

[0234] For optional implementations of step 903, please refer to [link / reference]. Figure 3 Optional implementation methods of step 303, and Figure 3 Other related parts in the embodiments involved will not be described in detail here.

[0235] Optionally, steps 901 and 903 do not have a specific order. For example, when the second radio frame is a Beacon frame, step 903 precedes step 901; in this case, the first radio frame can be an Association Request frame or a Reassociation Request frame. As another example, when the first radio frame is a Probe Request frame, step 903 follows step 901; in this case, the second radio frame can be a Probe Response frame.

[0236] The communication method involved in the embodiments of this disclosure may include the foregoing steps and at least one of the embodiments. For example, step 801 may be implemented as an independent embodiment, step 901 may be implemented as an independent embodiment, and step 903 may be implemented as an independent embodiment; the combination of step 801 with steps 901, 902, and 903 may be implemented as an independent embodiment, the combination of step 901 with step 902 may be implemented as an independent embodiment, the combination of step 601 with steps 701, 702, and 703 may be implemented as an independent embodiment, and the combination of step 701 with step 702 may be implemented as an independent embodiment, but is not limited thereto.

[0237] In some embodiments, see Figure 9 Other optional implementation methods described before or after the corresponding instruction manual.

[0238] Figure 10 This is the third flowchart illustrating a communication method according to an embodiment of the present disclosure.

[0239] like Figure 10 As shown, the above method can be applied to the first AP1021, and the method includes:

[0240] Step 1001: When the first AP1021 detects the second inter-BSS PPDU and meets the second condition, it switches from the primary channel to the secondary channel; wherein, the second condition includes:

[0241] At least one second STA1012 associated with the first AP1021 supports switching to the secondary channel for communication;

[0242] The fourth BSS corresponding to the second inter-BSS PPDU is the BSS where the fifth AP is located; wherein, the AP monitored by the second STA, and the fifth AP is the neighboring AP of the first AP; and, the second STA 1012 can monitor the second inter-BSS PPDU, that is, the second identification information in the first radio frame sent by the first AP 1021 to the second STA 1012 contains the identification information corresponding to the BSS where the fifth AP is located.

[0243] The second inter-BSS PPDU occupies the main channel for a duration longer than the first duration; wherein the first duration is the duration threshold for switching from the main channel to the secondary channel.

[0244] Optionally, the secondary channel can be pre-negotiated between the second STA1012 and the first AP1021. For example, the first AP1021 can send a second radio frame to the first STA1011 and indicate the parameter information of the secondary channel to the first STA1011 through the fourth identification information in the second radio frame.

[0245] Optionally, the fifth AP may include at least one of the neighboring APs of the first AP 1021.

[0246] For optional implementations of step 1001, please refer to [link / reference]. Figure 6 Optional implementation methods of step 601, and Figure 6 Other related parts in the embodiments involved will not be described in detail here.

[0247] In some embodiments, such as Figure 11 As shown, prior to step 1001, the method further includes:

[0248] Step 1101: The first AP1021 receives the third radio frame sent by the second STA1012; wherein the third radio frame includes seventh identification information and eighth identification information;

[0249] The seventh identification information indicates whether the second STA1012 supports switching to the secondary channel for communication; the eighth identification information indicates the identification information of the fifth BSS where the sixth AP is located, wherein the sixth AP is at least one AP other than the first AP1021 that the second STA1012 has been listening to.

[0250] Optionally, in some embodiments, the parameter value of the seventh identification information is set to a first parameter value, and the seventh identification information indicates that the second STA1012 supports switching to the secondary channel for communication.

[0251] Optionally, in some embodiments, the seventh identification information is carried in the Ultra-High Reliability Capability (UHR) element of the third radio frame, and the eighth identification information is carried in the Overlapping Service Set List (OBSS) element of the third radio frame.

[0252] Optionally, in some embodiments, the fifth AP is any one of the sixth APs.

[0253] In this embodiment of the disclosure, when the fourth BSS corresponding to the second inter-BSS PPDU is also the BSS where the neighboring AP (e.g., the fifth AP) of the first AP1021 is located, and the BSS where the second STA1012 can listen to the AP other than the first AP1021 (i.e., the sixth AP) is located, that is, when both the first AP1021 and the second STA1012 can listen to the second inter-BSS PPDU, it can be determined that the second inter-BSS PPDU will interfere with the communication process between the first AP1021 and the first STA1011 on the main channel.

[0254] For optional implementations of step 1101, please refer to [link / reference]. Figure 7 Optional implementation methods of step 701, and Figure 7 Other related parts in the embodiments involved will not be described in detail here.

[0255] Step 1102, the first AP1021 determines the second radio frame; wherein the second radio frame includes third identification information, fourth identification information, fifth identification information and sixth identification information;

[0256] The third identification information indicates whether the first AP1021 supports switching to the secondary channel for communication; the fourth identification information indicates the parameter information of the secondary channel; the fifth identification information indicates the first duration; the sixth identification information indicates the identification information of the third BSS where the fourth AP is located, and the fourth AP is at least one neighboring AP that the first AP1021 has detected.

[0257] For optional implementations of step 1102, please refer to [link / reference]. Figure 7 Optional implementation methods of step 703, and Figure 7 Other related parts in the embodiments involved will not be described in detail here.

[0258] Optionally, in some embodiments, the third identification information is carried in the UHRcapability element of the second radio frame, the fourth and fifth identification information are carried in the UHRoperation element or the Non-Main Channel Access (NPCA) element of the second radio frame, and the sixth identification information is carried in the neighbor report element, the reduced neighbor report element, or the Overlapping Service Set List element of the second radio frame.

[0259] Step 1103: The first AP1021 sends the second radio frame to the second STA1012.

[0260] For optional implementations of step 1103, please refer to [link / reference]. Figure 7 Optional implementations of step 704, and Figure 7 Other related parts in the embodiments involved will not be described in detail here.

[0261] Optionally, steps 1101 and 1102 do not have a specific order. For example, if the second radio frame is a Beacon frame, step 1102 precedes step 1101; in this case, the third radio frame can be an Association Request frame or a Reassociation Request frame. As another example, if the third radio frame is a Probe Request frame, step 1102 follows step 1101; in this case, the second radio frame can be a Probe Response frame.

[0262] The communication method involved in the embodiments of this disclosure may include the foregoing steps and at least one of the embodiments. For example, step 1001 may be implemented as an independent embodiment, step 1101 may be implemented as an independent embodiment, and step 1102 may be implemented as an independent embodiment; the combination of step 1001 with steps 1101, 1102, and 1103 may be implemented as an independent embodiment, and the combination of step 1102 and step 1103 may be implemented as an independent embodiment, but is not limited thereto.

[0263] In some embodiments, see Figure 11 Other optional implementation methods described before or after the corresponding instruction manual.

[0264] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0265] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0266] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute 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 can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using 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 and configuring the hardware circuit 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. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0267] Figure 12 This is one of the structural schematic diagrams of the communication device proposed in the embodiments of this disclosure. For example... Figure 12 As shown, the communication device 1200 is a first site device STA, which may include: a first processing module 1201.

[0268] In some embodiments, the first processing module 1201 is configured to switch from the primary channel to the secondary channel when the first STA detects an inter-BSS PPDU between the first basic service sets and a first condition is met; wherein the first condition includes:

[0269] The first access point device (AP) supports switching to the secondary channel for communication; wherein, the first AP is associated with the first STA;

[0270] The first basic service set (BSS) corresponding to the first inter-BSS PPDU is the BSS where the second AP is located; wherein, the second AP is the AP that the first AP is listening to; the second AP is not associated with the first STA;

[0271] The duration of the first inter-BSS PPDU occupying the primary channel is greater than a first duration; wherein the first duration is a threshold duration for switching from the primary channel to the secondary channel.

[0272] Optionally, the first processing module 1201 is used to execute at least one of the communication steps (e.g., steps 201, 301, and 901, but not limited thereto) executed by the first STA1011 in any of the above methods, which will not be elaborated here. The first processing module 1201 is also used to execute at least one of the send / receive steps (e.g., steps 302 and 902, but not limited thereto) executed by the first STA1011 in any of the above methods, which will not be elaborated here.

[0273] Figure 13 This is the second schematic diagram of the communication device proposed in the embodiments of this disclosure. Figure 13 As shown, the communication device is a first access point device (AP), and the first AP may include a second processing module 1301.

[0274] In some embodiments, the second processing module 1301 is configured to switch from the primary channel to the secondary channel when the first AP detects an inter-BSS PPDU between the second basic service sets and a second condition is met; wherein the second condition includes:

[0275] At least one second site device (STA) associated with the first AP supports switching to the secondary channel for communication;

[0276] The fourth basic service set BSS corresponding to the second inter-BSS PPDU is the BSS where the fifth AP is located; wherein, the fifth AP is the neighbor AP that the first AP is listening to; the fifth AP is not associated with the second STA;

[0277] The second inter-BSS PPDU occupies the main channel for a duration longer than the first duration; wherein the first duration is a threshold duration for switching from the main channel to the secondary channel.

[0278] Optionally, the second processing module 1301 is used to execute at least one of the communication steps (e.g., steps 303, 601, 703, 1001, 1101, 1102, but not limited thereto) executed by the first AP 1021 in any of the above methods, which will not be elaborated here. The second processing module 1301 is also used to execute at least one of the transmit / receive steps (e.g., steps 304, 704, 1103, but not limited thereto) executed by the first AP 1021 in any of the above methods, which will not be elaborated here.

[0279] Figure 14 This is a schematic diagram of the structure of a terminal 1400 (e.g., a user equipment) proposed in an embodiment of this disclosure. The terminal 1400 may be a chip, chip system, or processor that supports network devices in implementing any of the above methods, or it may be a chip, chip system, or processor that supports a terminal in implementing any of the above methods. The terminal 1400 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0280] like Figure 14 As shown, terminal 1400 includes one or more processors 1401. Processor 1401 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Terminal 1400 is used to execute any of the above methods.

[0281] In some embodiments, terminal 1400 further includes one or more memories 1402 for storing instructions. Optionally, all or part of the memories 1402 may be located outside of terminal 1400.

[0282] In some embodiments, terminal 1400 further includes one or more transceivers 1404. When terminal 1400 includes one or more transceivers 1404, transceivers 1404 perform at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps 302, 702, 902, 304, 704, 1103, but not limited thereto), and processor 1401 performs at least one of other steps (e.g., steps 201, 301, 303, 601, 701, 703, 901, 1001, 1101, 1102, but not limited thereto).

[0283] In some embodiments, a transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0284] In some embodiments, terminal 1400 may include one or more interface circuits 1403. Optionally, interface circuit 1403 is connected to memory 1402, and interface circuit 1403 can be used to receive signals from memory 1402 or other devices, and can be used to send signals to memory 1402 or other devices. For example, interface circuit 1403 can read instructions stored in memory 1402 and send the instructions to processor 1401.

[0285] The terminal 1400 described in the above embodiments can be a communication device such as a user equipment, but the scope of the terminal 1400 described in this disclosure is not limited to this, and the structure of the terminal 1400 can be unrestricted. Figure 14 The limitations. The communication device can be a standalone device or part of a larger device. For example, the communication device can be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally including storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0286] Figure 15 This is a schematic diagram of the structure of chip 1500 according to an embodiment of this disclosure. For cases where terminal 1300 can be a chip or a chip system, please refer to... Figure 15 The diagram shown is a schematic representation of the structure of chip 1500, but it is not limited to this.

[0287] Chip 1500 includes one or more processors 1501, which are used to perform any of the above methods.

[0288] In some embodiments, chip 1500 further includes one or more 1503s. Optionally, interface circuitry 1503 is connected to memory 1502, and interface circuitry 1503 can be used to receive signals from memory 1502 or other devices, and interface circuitry 1503 can be used to send signals to memory 1502 or other devices. For example, interface circuitry 1503 can read instructions stored in memory 1502 and send the instructions to processor 1501.

[0289] In some embodiments, the interface circuit 1503 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps 302, 702, 902, 304, 704, 1103, but not limited thereto), and the processor 1501 performs at least one of other steps (e.g., steps 201, 301, 303, 601, 701, 703, 901, 1001, 1101, 1102, but not limited thereto).

[0290] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0291] In some embodiments, chip 1500 further includes one or more memories 1502 for storing instructions. Optionally, all or part of the memories 1502 may be located outside of chip 1500.

[0292] This disclosure also proposes a storage medium storing instructions that, when executed on terminal 1400, cause terminal 1400 to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0293] This disclosure also proposes a program product that, when executed by terminal 1400, causes terminal 1400 to perform any of the above methods. Optionally, the program product is a computer program product.

[0294] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method characterized by comprising: The method is executed by a first station device STA, and the method comprises: switching from a primary channel to a secondary channel in a case that the first STA listens to an inter-BSS physical layer protocol data unit (inter-BSS PPDU) between first basic service sets and a first condition is met; wherein the first condition comprises: a first access point device (AP) supports switching to the secondary channel for communication; wherein the first AP is associated with the first STA; a first basic service set (BSS) corresponding to the first inter-BSS PPDU is a BSS in which a second AP is located; wherein the second AP is a neighbor AP listened to by the first AP; and the second AP is not associated with the first STA; a duration in which the first inter-BSS PPDU occupies the primary channel is greater than a first duration; wherein the first duration is a duration threshold for switching from the primary channel to the secondary channel.

2. The communication method according to claim 1, characterized by, Before the first STA listens to the first inter-BSS PPDU, the method further comprises: determining a first radio frame; wherein the first radio frame comprises first identification information and second identification information; the first identification information identifies whether the first STA supports switching to the secondary channel for communication; and the second identification information identifies identification information of a second BSS in which a third AP is located, the third AP being at least one AP listened to by the first STA and being different from the first AP; sending the first radio frame to the first AP.

3. The communication method according to claim 2, wherein, A parameter value of the first identification information is set as a first parameter value, and the first identification information identifies that the first STA supports switching to the secondary channel for communication.

4. The communication method according to claim 2, characterized by, The second AP is any one of the third APs.

5. The communication method of claim 2, wherein the first identification information is carried in an ultra-high reliability capability element (UHR capability element) of the first radio frame, and the second identification information is carried in an overlapping basic service set list element (OBSS list element) of the first radio frame.

6. The communication method according to any one of claims 1 to 5, characterized by, Before the first STA listens to the first inter-BSS PPDU, the method further comprises: receiving a second radio frame sent by the first AP; wherein the second radio frame comprises third identification information, fourth identification information, fifth identification information, and sixth identification information; the third identification information identifies whether the first AP supports switching to the secondary channel for communication; the fourth identification information identifies parameter information of the secondary channel; the fifth identification information identifies the first duration; and the sixth identification information identifies identification information of a third BSS in which a fourth AP is located, the fourth AP being at least one neighbor AP listened to by the first AP.

7. The communication method of claim 6, wherein The third identification information is carried in a UHR capability element of the second wireless frame, the fourth identification information and the fifth identification information are carried in a UHR operation element or a non-primary channel access (NPCA) element of the second wireless frame, and the sixth identification information is carried in a neighbor report element or a reduced neighbor report element or an OBSS list element of the second wireless frame.

8. A communication method characterized by comprising: The method is performed by a first access point device (AP) and includes the following steps. Switching from a primary channel to a secondary channel when the first AP listens to an inter-BSS physical layer protocol data unit (inter-BSS PPDU) between second basic service sets (BSSs) and a second condition is met, wherein the second condition includes the following conditions: At least one second station device (STA) associated with the first AP supports switching to the secondary channel for communication; A fourth BSS corresponding to the second inter-BSS PPDU is a BSS in which a fifth AP is located, wherein the fifth AP is an AP listened to by the second STA and is a neighbor AP of the first AP; A time length during which the second inter-BSS PPDU occupies the primary channel is greater than a first time length, wherein the first time length is a time length threshold for switching from the primary channel to the secondary channel.

9. The communication method according to claim 8, wherein, Before the first AP listens to the second inter-BSS PPDU, the method further includes the following steps. Receiving a third wireless frame sent by the second STA, wherein the third wireless frame includes seventh identification information and eighth identification information; The seventh identification information identifies whether the second STA supports switching to the secondary channel for communication, and the eighth identification information identifies identification information of a fifth BSS in which a sixth AP is located, wherein the sixth AP is at least one AP listened to by the second STA and is different from the first AP.

10. The communication method according to claim 9, wherein, A parameter value of the seventh identification information is set to a first parameter value, and the seventh identification information indicates that the second STA supports switching to the secondary channel for communication.

11. The communication method according to claim 9, wherein The fifth AP is any one of the sixth APs.

12. The communication method according to claim 9, wherein The seventh identification information is carried in a UHR capability element of the third wireless frame, and the eighth identification information is carried in an OBSS list element of the third wireless frame.

13. The communication method according to any one of claims 8 to 12, characterized by, Before the first AP listens to the second inter-BSS PPDU, the method further includes the following steps. Determining a second wireless frame, wherein the second wireless frame includes third identification information, fourth identification information, fifth identification information, and sixth identification information; The third identification information identifies whether the first AP supports switching to the secondary channel to communicate; the fourth identification information identifies parameter information of the secondary channel; the fifth identification information identifies the first time length; and the sixth identification information identifies identification information of a third BSS in which a fourth AP is located, the fourth AP being at least one neighbor AP of the first AP detected by the first AP; sending the second wireless frame to the second STA.

14. The communication method of claim 13, wherein, the third identification information is carried in a UHR capability element of the second wireless frame, the fourth identification information and the fifth identification information are carried in a UHR operation element or a non-primary channel access (NPCA) element of the second wireless frame, and the sixth identification information is carried in a neighbor report element or a reduced neighbor report element or an overlapping basic service set (OBSS) list element of the second wireless frame.

15. A communication device, characterized by The communication device includes a first station device (STA), and the first STA includes: a first processing module, configured to switch from a primary channel to a secondary channel in a case where a first inter-BSS physical layer protocol data unit (PPDU) is detected by the first STA and a first condition is met, wherein the first condition includes: a first access point device (AP) supports switching to the secondary channel to communicate, wherein the first AP is associated with the first STA; a first basic service set (BSS) corresponding to the first inter-BSS PPDU is a BSS in which a second AP is located, wherein the second AP is an AP detected by the first AP, and the second AP is not associated with the first STA; a time length during which the first inter-BSS PPDU occupies the primary channel is greater than a first time length, wherein the first time length is a time length threshold for switching from the primary channel to the secondary channel.

16. A communication device, characterized by The communication device includes a first access point device (AP), and the first AP includes: a second processing module, configured to switch from a primary channel to a secondary channel in a case where a second inter-BSS physical layer protocol data unit (PPDU) is detected by the first AP and a second condition is met, wherein the second condition includes: at least one second station device (STA) associated with the first AP supports switching to the secondary channel to communicate; a fourth basic service set (BSS) corresponding to the second inter-BSS PPDU is a BSS in which a fifth AP is located, wherein the fifth AP is an AP detected by the second STA, and the fifth AP is a neighbor AP of the first AP; a time length during which the second inter-BSS PPDU occupies the primary channel is greater than a first time length, wherein the first time length is a time length threshold for switching from the primary channel to the secondary channel.

17. A communication device, characterized by The communication device includes a first station device (STA), and includes: one or more processors; and The communication device is configured to perform the communication method of any one of claims 1-7.

18. A communication device, characterized by The communication device comprises a first access point device, AP, comprising: one or more processors; The communication device is configured to perform the communication method of any one of claims 8-14.

19. A communication system, characterized by The communication device comprises a first station device, STA, and a first access point device, AP; the first STA is associated with the first AP; The first STA is configured to switch from a primary channel to a secondary channel in a case that the first STA monitors a first inter-BSS protocol data unit, inter-BSS PPDU, between first basic service sets, and a first condition is met; the first condition comprises: The first AP supports switching to the secondary channel for communication; A first basic service set, BSS, corresponding to the first inter-BSS PPDU is a BSS in which a second AP is located; the second AP is an AP monitored by the first AP; the second AP is not associated with the first STA; A duration that the first inter-BSS PPDU occupies the primary channel is greater than a first duration; the first duration is a duration threshold for switching from the primary channel to the secondary channel.

20. A communication system, characterized by The communication device comprises at least one second station device, STA, and a first access point device, AP; the second STA is associated with the first AP; The first AP is configured to switch from a primary channel to a secondary channel in a case that the first AP monitors a second inter-BSS PPDU, and a second condition is met; the second condition comprises: The second STA supports switching to the secondary channel for communication; A fourth BSS corresponding to the second inter-BSS PPDU is a BSS in which a fifth AP is located; the fifth AP is an AP monitored by the second STA, and the fifth AP is a neighbor AP of the first AP; A duration that the second inter-BSS PPDU occupies the primary channel is greater than a first duration; the first duration is a duration threshold for switching from the primary channel to the secondary channel.

21. A storage medium, the storage medium storing instructions, wherein, The instructions, when executed on the communication device, cause the communication device to perform the communication method of any one of claims 1-7, or perform the communication method of any one of claims 8-14.

22. A program product, characterized by The program product, when executed on the communication device, causes the communication device to perform the communication method of any one of claims 1-7, or perform the communication method of any one of claims 8-14.

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