Communication method, access point device, station device, and communication device

Abstract

The embodiments of the present disclosure relate to a communication method, an access point device, a station device, and a communication device. The communication method comprises: an access point device sending a first radio frame on a main channel, wherein the first radio frame requests a station device to send a data frame or cache information; and if a second radio frame responded by the station device is not received within a first preset frame interval, not repeatedly sending the first radio frame. Thus, the waste of signaling resources caused by repeated sending is avoided. Moreover, a mechanism for a WLAN device to perform communication in an auxiliary channel is perfected, such that the throughput of a communication system is increased, thereby realizing the maximum utilization of channel resources.

Description

Communication method, access point device, station device and communication device Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication method, an access point device, a station device, and a communication device. Background Art

[0002] Currently, Wi-Fi technology research focuses on Ultra High Reliability (UHR), with the goal of improving the reliability of Wireless Local Area Networks (WLAN) connections, reducing latency, improving manageability, increasing throughput at different signal-to-noise ratio (SNR) levels, and reducing device-level power consumption.

[0003] In UHR, in order to fully utilize channel resources and support WLAN devices to communicate on auxiliary channels, it is necessary to further improve the mechanism for WLAN devices to communicate on auxiliary channels to meet the transmission requirements of UHR.

[0004] Summary of the Invention

[0005] The embodiments of the present disclosure provide a communication method, an access point device, a station device, and a communication device to further improve the communication mechanism of WLAN devices on auxiliary channels.

[0006] In one aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0007] The access point device sends a first wireless frame on the primary channel; wherein the first wireless frame requests the station device to send a data frame or buffer information;

[0008] If no second radio frame in response to the site device is received within the first preset frame interval, the first radio frame is not sent repeatedly.

[0009] On the other hand, an embodiment of the present disclosure further provides a communication method, the method comprising:

[0010] The station device receives, on a primary channel, a first radio frame sent by the access point device, or receives, on an auxiliary channel, a third radio frame sent by the access point device through a backoff mechanism;

[0011] The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0012] The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and receives no response from the station device within a first preset frame interval.

[0013] On the other hand, an embodiment of the present disclosure further provides a communication method, the method comprising:

[0014] The station device sends a fourth radio frame on the primary channel; wherein the fourth radio frame requests the access point device to send a data frame;

[0015] If the fifth radio frame in response to the access point device is not received within the second preset frame interval, the fourth radio frame is not sent repeatedly.

[0016] On the other hand, an embodiment of the present disclosure further provides a communication method, the method comprising:

[0017] The access point device receives the fourth radio frame sent by the station device on the primary channel, or receives the sixth radio frame sent by the station device through the backoff mechanism on the auxiliary channel;

[0018] The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device;

[0019] The sixth radio frame is sent by the station device as a fifth radio frame after no response is received from the access point device within a fourth preset frame interval after the station device sends the fourth radio frame.

[0020] On the other hand, an embodiment of the present disclosure further provides an access point device, the access point device comprising:

[0021] A first sending module, configured to send a first radio frame on a primary channel; wherein the first radio frame requests a site device to send a data frame or cache information;

[0022] The first receiving module is configured to not repeatedly send the first radio frame if no second radio frame in response to the site device is received within a first preset frame interval.

[0023] On the other hand, an embodiment of the present disclosure further provides a site device, the site device including:

[0024] A second receiving module is configured to receive a first radio frame sent by an access point device on a primary channel, or receive a third radio frame sent by the access point device through a backoff mechanism on an auxiliary channel;

[0025] The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0026] The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and receives no response from the station device within a first preset frame interval.

[0027] On the other hand, an embodiment of the present disclosure further provides a site device, the site device including:

[0028] A second sending module is configured to send a fourth wireless frame on a primary channel; wherein the fourth wireless frame requests the access point device to send a data frame;

[0029] The third receiving module is configured to not repeatedly send the fourth radio frame if the fifth radio frame responded by the access point device is not received within a second preset frame interval.

[0030] On the other hand, an embodiment of the present disclosure further provides an access point device, the access point device comprising:

[0031] a fourth receiving module, configured to receive a fourth radio frame sent by the site device on the primary channel, or receive a sixth radio frame sent by the site device through a backoff mechanism on the auxiliary channel;

[0032] The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device;

[0033] The sixth radio frame is sent by the station device as a fifth radio frame after no response is received from the access point device within a fourth preset frame interval after the station device sends the fourth radio frame.

[0034] On the other hand, an embodiment of the present disclosure further provides an access point device, including:

[0035] one or more processors;

[0036] The access point device is used to implement the communication method described in the embodiment of the present disclosure.

[0037] On the other hand, an embodiment of the present disclosure further provides a site device, including:

[0038] one or more processors;

[0039] The site device is used to execute the communication method described in the embodiment of the present disclosure.

[0040] On the other hand, an embodiment of the present disclosure further provides a communication device, including:

[0041] one or more processors;

[0042] The communication device is used to execute the communication method described in the embodiment of the present disclosure.

[0043] An embodiment of the present disclosure further provides a communication system, including an access point device and a site device; wherein the access point device is configured to implement the communication method described in the embodiment of the present disclosure, and the site device is configured to implement the communication method described in the embodiment of the present disclosure.

[0044] An embodiment of the present disclosure further provides a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes the communication method described in the embodiment of the present disclosure, or executes the communication method described in the embodiment of the present disclosure.

[0045] In this disclosed embodiment, an access point device transmits a first radio frame on a primary channel; this first radio frame requests a station device to transmit a data frame or cache information. After transmitting the first radio frame, if the access point device does not receive a second radio frame in response from the station device, the access point device does not retransmit the first radio frame, thereby avoiding wasting signaling resources due to repeated transmissions. This also improves the communication mechanism for WLAN devices in the secondary channel, increases communication system throughput, and maximizes channel resource utilization.

[0046] Additional aspects and advantages of the embodiments of the present disclosure will be given in part in the following description, which will become apparent from the following description or be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0048] FIG1 is a schematic diagram of one of the examples provided by an embodiment of the present disclosure;

[0049] FIG2 is a schematic diagram of a communication system provided by an embodiment of the present disclosure;

[0050] FIG3 is one of exemplary interaction diagrams of a method provided according to an embodiment of the present disclosure;

[0051] FIG4 is a second schematic diagram of an example provided by an embodiment of the present disclosure;

[0052] FIG5 is a third schematic diagram of an example provided by an embodiment of the present disclosure;

[0053] FIG6 is a second exemplary interaction diagram of a method provided according to an embodiment of the present disclosure;

[0054] FIG7 is a flow chart of a communication method according to an embodiment of the present disclosure;

[0055] FIG8 is a second flow chart of the communication method provided in an embodiment of the present disclosure;

[0056] FIG9 is a third flow chart of the communication method provided in an embodiment of the present disclosure;

[0057] FIG10 is a fourth flow chart of the communication method provided in an embodiment of the present disclosure;

[0058] FIG11 is a schematic diagram of a structure of an access point device according to an embodiment of the present disclosure;

[0059] FIG12 is a schematic diagram of a structure of a site device according to an embodiment of the present disclosure;

[0060] FIG13 is a second structural diagram of a site device according to an embodiment of the present disclosure;

[0061] FIG14 is a second structural diagram of an access point device proposed in an embodiment of the present disclosure;

[0062] FIG15 is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

[0063] FIG16 is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0064] The embodiments of the present disclosure provide a communication method, an access point device, a station device, and a communication device.

[0065] In a first aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0066] The access point device sends a first wireless frame on the primary channel; wherein the first wireless frame requests the station device to send a data frame or buffer information;

[0067] If no second radio frame in response to the site device is received within the first preset frame interval, the first radio frame is not sent repeatedly.

[0068] In the above embodiment, after the access point device sends the first radio frame, if it does not receive the second radio frame in response from the station device, it does not repeatedly send the first radio frame, thereby avoiding waste of signaling resources caused by repeated transmission.

[0069] In combination with some embodiments of the first aspect, in some embodiments, a third wireless frame is sent to the site device through a backoff mechanism on an auxiliary channel; wherein the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0070] In the above embodiment, the access point device sends the third radio frame to the station device, and triggers communication on the auxiliary channel through the third radio frame, thereby further improving the mechanism of communication on the auxiliary channel among WLAN devices.

[0071] In conjunction with some embodiments of the first aspect, in some embodiments, the duration of the first radio frame includes: two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the time length of the BA message frame;

[0072] and / or

[0073] The duration of the third radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the transmission duration of the BA message frame or the ACK message frame.

[0074] In the above embodiment, by defining the duration of the first radio frame and the duration of the third radio frame, the mechanism of communication of the WLAN device in the auxiliary channel is improved.

[0075] In conjunction with some embodiments of the first aspect, in some embodiments, the first radio frame includes an RTS frame or a BSRP frame;

[0076] The second radio frame includes a CTS frame or a BSR frame;

[0077] and / or

[0078] The third radio frame includes an RTS frame or a BSRP frame.

[0079] In conjunction with some embodiments of the first aspect, in some embodiments, after sending the first radio frame, the method further includes:

[0080] The second radio frame is received; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel NAV.

[0081] In the above embodiment, the duration of the second wireless frame sent by the site device usually does not exceed the communication duration of the auxiliary channel. The smaller time value between the duration of the first wireless frame and the set duration of the main channel NAV is selected as the duration of the second wireless frame to ensure that the communication duration of the auxiliary channel does not exceed the set duration of the main channel NAV.

[0082] In conjunction with some embodiments of the first aspect, in some embodiments, the duration of the first radio frame is greater than the NAV setting duration of the primary channel, and the duration of the second radio frame is the NAV setting duration of the primary channel;

[0083] or

[0084] The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is the duration of the first radio frame.

[0085] In a second aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0086] The station device receives, on a primary channel, a first radio frame sent by the access point device, or receives, on an auxiliary channel, a third radio frame sent by the access point device through a backoff mechanism;

[0087] The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0088] The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and receives no response from the station device within a first preset frame interval.

[0089] In conjunction with some embodiments of the second aspect, in some embodiments, the duration of the first radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the time length of the BA message frame;

[0090] and / or

[0091] The duration of the third radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the transmission duration of the BA message frame or the ACK message frame.

[0092] In conjunction with some embodiments of the second aspect, in some embodiments, the first radio frame includes an RTS frame or a BSRP frame;

[0093] The second radio frame includes a CTS frame or a BSR frame;

[0094] and / or

[0095] The third radio frame includes an RTS frame or a BSRP frame.

[0096] In conjunction with some embodiments of the second aspect, in some embodiments, after receiving the first radio frame sent by the access point device on the primary channel, the method further includes:

[0097] The site device sends the second radio frame on the primary channel; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel NAV.

[0098] In conjunction with some embodiments of the second aspect, in some embodiments, the duration of the first radio frame is greater than the NAV setting duration of the primary channel, and the duration of the second radio frame is the NAV setting duration of the primary channel;

[0099] or

[0100] The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is the duration of the first radio frame.

[0101] In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0102] The station device sends a fourth radio frame on the primary channel; wherein the fourth radio frame requests the access point device to send a data frame;

[0103] If the fifth radio frame in response to the access point device is not received within the second preset frame interval, the fourth radio frame is not sent repeatedly.

[0104] In combination with some embodiments of the third aspect, in some embodiments, a sixth wireless frame is sent to the access point device through a backoff mechanism on an auxiliary channel; wherein the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device.

[0105] In conjunction with some embodiments of the third aspect, in some embodiments, the duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the time length of the BA message frame;

[0106] and / or

[0107] The duration of the sixth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the transmission duration of a BA message frame or an ACK message frame.

[0108] In conjunction with some embodiments of the third aspect, in some embodiments, the fourth radio frame includes an RTS frame;

[0109] The fifth radio frame includes a CTS frame;

[0110] and / or

[0111] The sixth radio frame includes an RTS frame.

[0112] In conjunction with some embodiments of the third aspect, in some embodiments, after sending the fourth radio frame, the method further includes:

[0113] The fifth radio frame is received; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

[0114] In conjunction with some embodiments of the third aspect, in some embodiments, the duration of the fourth radio frame is greater than the primary channel NAV setting duration, and the duration of the fifth radio frame is the primary channel NAV setting duration;

[0115] or

[0116] The duration of the fourth radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the duration of the fourth radio frame.

[0117] In a fourth aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

[0118] The access point device receives the fourth radio frame sent by the station device on the primary channel, or receives the sixth radio frame sent by the station device through the backoff mechanism on the auxiliary channel;

[0119] The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device;

[0120] The sixth radio frame is sent by the station device as a fifth radio frame after no response is received from the access point device within a fourth preset frame interval after the station device sends the fourth radio frame.

[0121] In conjunction with some embodiments of the fourth aspect, in some embodiments, the duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the time length of the BA message frame;

[0122] and / or

[0123] The duration of the sixth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the transmission duration of a BA message frame or an ACK message frame.

[0124] In conjunction with some embodiments of the fourth aspect, in some embodiments, the fourth radio frame includes an RTS frame;

[0125] The fifth radio frame includes a CTS frame;

[0126] and / or

[0127] The sixth radio frame includes an RTS frame.

[0128] In conjunction with some embodiments of the fourth aspect, in some embodiments, after receiving the fourth radio frame sent by the site device on the primary channel, the method further includes:

[0129] The access point device sends the fifth radio frame on the primary channel; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

[0130] In conjunction with some embodiments of the fourth aspect, in some embodiments, the duration of the fourth radio frame is greater than the primary channel NAV setting duration, and the duration of the fifth radio frame is the primary channel NAV setting duration;

[0131] or

[0132] The duration of the fourth radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the duration of the fourth radio frame.

[0133] In a fifth aspect, an embodiment of the present disclosure further provides an access point device, comprising at least one of a determination module and a sending module; wherein the access point device is configured to execute the optional implementation of the first aspect or the second aspect.

[0134] In a sixth aspect, an embodiment of the present disclosure further provides a site device, comprising: a first receiving module; wherein the above-mentioned site device is used to execute the optional implementation method of the second aspect or the fourth aspect.

[0135] In a seventh aspect, an embodiment of the present disclosure further provides an access point device, including:

[0136] one or more processors;

[0137] The access point device is used to execute the optional implementation of the first aspect and the third aspect.

[0138] In an eighth aspect, an embodiment of the present disclosure further provides a site device, including:

[0139] one or more processors;

[0140] The site device is used to execute the optional implementation of the second aspect and the fourth aspect.

[0141] In the ninth aspect, an embodiment of the present disclosure further provides a communication system, comprising an access point device and a site device; wherein the access point device is configured to execute the optional implementation methods described in the first and second aspects, and the site device is configured to perform the optional implementation methods described in the third and fourth aspects.

[0142] In the tenth aspect, an embodiment of the present disclosure further provides a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the optional implementation methods described in the first, second, third, and fourth aspects.

[0143] In the eleventh aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first aspect, the second aspect, the third aspect, and the fourth aspect.

[0144] In the twelfth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first, second, third and fourth aspects.

[0145] In a thirteenth aspect, an embodiment of the present disclosure provides a chip or a chip system, which includes a processing circuit configured to execute the method described in the optional implementation of the first, second, third, and fourth aspects above.

[0146] It is understandable that the aforementioned access point devices, station devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0147] The embodiments of the present disclosure provide a communication method, an access point device, a station device, and a communication device. In some embodiments, the terms communication method, signal transmission method, wireless frame transmission method, etc. are interchangeable, and the terms information processing system, communication system, etc. are interchangeable.

[0148] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0149] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0150] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0151] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0152] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0153] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0154] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0155] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0156] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0157] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0158] In some embodiments, terms such as "greater than", "less than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0159] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0160] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0161] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0162] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0163] FIG1 is a schematic diagram showing a communication method according to an embodiment of the present disclosure.

[0164] As shown in Figure 1, in a WLAN, channels are typically divided into primary channels and secondary channels (or non-primary channels, or secondary channels, non-primary channels); a primary channel is, for example, the primary 20 MHz channel in Figure 1; wherein, a secondary channel may include one or more sub-channels, such as the 20 MHz secondary channel and the 40 MHz secondary channel in Figure 1.

[0165] During the channel contention process, if the primary channel is in the OBSS busy state (OBSS interference), as shown in the T1 and T2 time periods in the figure, for example, it is occupied by other devices in the same OBSS as the WLAN, and other devices send physical layer protocol data units (PPDUs) on the primary channel, then the primary channel is in the OBSS busy state. If the primary channel is in the OBSS busy state, in order to fully utilize the channel resources, it can be switched to the auxiliary channel communication to improve the communication system throughput and maximize the utilization of channel resources. For example, in the T1 time period, it can switch to the 20MHz auxiliary channel communication, or in the T2 time period, it can switch to the 40MHz auxiliary channel communication.

[0166] If the primary channel is in an idle state, as shown in the T3 time period in the figure, the AP and the STA can send data or other information to each other.

[0167] FIG2 is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0168] As shown in FIG2 , a communication system 100 includes a station device (STA) 101 and an access point device (AP) 102 .

[0169] In some embodiments, the site device 101 includes, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports WiFi communication. Optionally, the wireless communication terminal includes, but is not limited to, at least one of a mobile phone, a wearable device, an Internet of Things device that supports WiFi communication, a car with WiFi communication, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device used in industrial control, a wireless terminal device used in self-driving, a wireless terminal device used in remote medical surgery, a wireless terminal device used in a smart grid, a wireless terminal device used in transportation safety, a wireless terminal device used in a smart city, and a wireless terminal device used in a smart home.

[0170] Specifically, the station device 101 may be a terminal device or network device equipped with a wireless fidelity (WiFi) chip. Optionally, the station device 101 may support multiple WLAN standards, such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next generation 802.11 protocol, but is not limited thereto.

[0171] In some embodiments, the access point device 102 can be an access point for a mobile terminal to enter a wired network. The AP is equivalent to a bridge connecting a wired network and a wireless network. Its main function is to connect various wireless network clients together and then connect the wireless network to the Ethernet. Specifically, the AP can be a terminal device or a network device with a wireless fidelity chip. Optionally, the AP can support multiple WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b and 802.11a, 802.11bf, 802.11bn, and support the next generation 802.11 protocol, but is not limited to this.

[0172] Optionally, in an embodiment of the present disclosure, the AP and STA may be devices supporting multiple connections, for example, they may be represented as a multi-connection access point device (AP MLD) and a multi-link site device (Non-Access Point Multi-Link Device, Non-AP MLD), respectively; the AP MLD may represent an access point supporting multi-connection communication functions, and the non-AP MLD may represent a site supporting multi-connection communication functions.

[0173] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0174] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG2 , or a portion thereof, but are not limited thereto. The entities shown in FIG2 are illustrative only. The communication system may include all or part of the entities shown in FIG2 , or may include other entities outside of FIG2 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0175] The various embodiments of the present disclosure can be applied to wireless local area networks (WLANs), such as those using the 802.11 series of protocols. In a WLAN, a Basic Service Set (BSS) is a fundamental component of a WLAN. A BSS network consists of station devices with some association within a specific coverage area. One scenario of association is that stations communicate directly with each other in an ad hoc network, which is called an Independent Basic Service Set (IBSS). Another more common scenario is that in a BSS network, there is only one central station dedicated to managing the BSS, called an access point, and all other STAs in the network are associated with it. Other stations in the BSS network that are not the central station are called terminals, also called non-AP STAs. Terminals and non-AP STAs are collectively referred to as STAs. When describing STAs, there is no need to distinguish between APs and non-AP STAs. In the same BSS network, due to distance, transmission power, and other factors, a STA cannot detect other STAs that are farther away from it, and the two STAs are each other's hidden nodes.

[0176] FIG3 is a schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG3 , the method includes:

[0177] Step 301: The access point device sends a first radio frame on a primary channel; wherein the first radio frame requests the site device to send a data frame or buffer information.

[0178] In WLAN, channels are usually divided into primary channels and secondary channels (or non-primary channels). A secondary channel can contain one or more sub-channels. For example, if the basic bandwidth unit is 20 MHz, when the channel bandwidth is 20 MHz, there is only one primary channel with a bandwidth of 20 MHz. When the channel bandwidth is greater than 20 MHz, there is one channel with a bandwidth of 20 MHz as the primary channel, and the remaining one or more 20 MHz channels are secondary channels. The primary 20 MHz channel is the common channel of operation for stations that are members of the basic service set (BSS). Stations in the BSS can compete for channels on the primary 20 MHz channel to seize channel resources.

[0179] During the channel contention process, if the primary channel is in the OBSS busy state, for example, if it is occupied by other devices in the same OBSS as access point device 102 and other devices are sending physical layer protocol data units (PPDUs) on the primary channel, then the primary channel is in the OBSS busy state. If the primary channel is in the OBSS busy state, in order to fully utilize channel resources, the secondary channel can be switched to communicate with site device 101, and site device 101 can be scheduled to the secondary channel. Data can be sent and received with site device 101, thereby improving communication system throughput and maximizing channel resource utilization.

[0180] In the disclosed embodiment, the access point device 102 detects whether the primary channel is busy. Typically, each station device on a network monitors whether other data is being transmitted on the channel before sending data, for example, through an energy detection (ED) mechanism. Upon detecting that the primary channel is idle, the access point device 102 transmits a first radio frame on the primary channel, requesting the station device to send a data frame or cache information via the first radio frame.

[0181] Optionally, the first radio frame may include a request to send (RTS) frame or a buffer status report poll (BSRP) control frame. When the access point device 102 sends the RTS frame or the BSRP control frame, the station device 101 may not be able to receive the first radio frame, for example, due to the presence of hidden nodes, or communication between the other hidden nodes and the station device 101 interferes with the station device 101 receiving the first radio frame.

[0182] The first preset frame interval includes a preset time for receiving a response frame to the first wireless frame. For example, the preset time can be preset to n short inter frame spaces (SIFS), where n is a positive integer. Within the first preset frame interval, if the response frame fed back by the site device is received, step 303 is executed; otherwise, step 302 is executed.

[0183] Step 302: If no second radio frame in response to the site device is received within a first preset frame interval, the first radio frame is not sent repeatedly.

[0184] If the second radio frame in response to the site device is not received within the first preset frame interval, that is, the site device does not send the second radio frame in response to the first radio frame to the access point device 102 within the preset time, the site device 101 may not have received the first radio frame. In this case, the access point device 102 does not repeatedly send the first radio frame, thereby avoiding wasting signaling resources caused by continuously and repeatedly sending the first radio frame.

[0185] Optionally, the second radio frame may be a clear to send (CTS) frame or a buffer status report (BSR) frame.

[0186] Step 304: Send a third radio frame to the site device via a backoff mechanism on the auxiliary channel; wherein the third radio frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0187] If the access point device 102 and the station device 101 have pre-negotiated that when the primary channel senses busy, they need to switch to the secondary channel for communication, then after step 302, the access point device 102 and the station device 101 can switch to the secondary channel for communication. The access point device 102 sends a third radio frame to the station device on the secondary channel through a backoff mechanism. The third radio frame, such as an RTS frame or a buffer status report poll (BSRP) frame, triggers communication on the secondary channel through the third radio frame.

[0188] In some embodiments, the duration of the first radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the time length of a BA message frame;

[0189] The duration field of the first radio frame is set to the sum of the durations of the following elements:

[0190] 2×SIFS+the sending duration of the second radio frame (for example, the sending duration of CTS)+the sending duration of the first radio frame (for example, the sending duration of RTS)+the sending duration of the confirmation message frame (BA message frame or ACK message frame).

[0191] Taking the first wireless frame as RTS, the second wireless frame as CTS, and the confirmation message frame as BA as an example, see Figure 4. The duration of the first wireless frame is shown in Figure 4, including: 2×SIFS+CTS sending duration (or receiving duration) + the sum of the sending duration of the first wireless frame + the sending duration (or receiving duration) of the BA message frame; wherein, 2×SIFS represents 2 SIFS respectively, namely S1 and S2 in Figure 4.

[0192] After the first SIFS ( S1 ), the access point device 102 may receive a second radio frame.

[0193] The BA message frame is a Block Ack (BA) message frame.

[0194] In some embodiments, the duration of the third wireless frame includes: the sum of two short frame intervals, the transmission duration of the second wireless frame, the transmission duration of the first wireless frame, and the transmission duration of the BA message frame or the ACK message frame.

[0195] The duration field of the first radio frame is set to the sum of the durations of the following elements:

[0196] 2×SIFS+the sending duration of the second radio frame (for example, the sending duration of CTS)+the sending duration of the first radio frame (for example, the sending duration of RTS)+the sending duration of the confirmation message frame (BA message frame or ACK message frame).

[0197] The access point device 102 transmits a third radio frame to the site device via the backoff mechanism on the auxiliary channel. Referring to FIG5 , the duration of the third radio frame is shown in FIG5 , and includes the sum of: 2×SIFS + the CTS transmission duration (or reception duration) + the first radio frame transmission duration + the BA or ACK message frame transmission duration (or reception duration); wherein 2×SIFS represents two SIFSs, i.e., S1 and S2 in FIG5 .

[0198] Step 303: Receive the second radio frame; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel NAV.

[0199] If the access point device 102 does not sense that the primary channel is busy, the network allocation vector (NAV) is not set. However, if the site device 101 senses that the primary channel is busy, the NAV needs to be set. Since the communication duration on the secondary channel does not exceed the set duration of the primary channel NAV, the duration of the second radio frame sent by the site device generally does not exceed the communication duration of the secondary channel. The smaller time value between the duration of the first radio frame and the set duration of the primary channel NAV is selected as the duration of the second radio frame.

[0200] In some embodiments, the duration of the first radio frame is greater than the primary channel NAV setting duration, and the duration of the second radio frame is the primary channel NAV setting duration;

[0201] or

[0202] The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is the duration of the first radio frame.

[0203] If the duration of the first radio frame is greater than the primary channel NAV setting duration, the duration of the second radio frame is the primary channel NAV setting duration, so that the duration of the second radio frame does not exceed the primary channel NAV setting duration.

[0204] If the duration of the first radio frame is less than or equal to the duration set for the primary channel NAV, the duration of the second radio frame is the duration of the first radio frame, so that the durations of the two are consistent and do not exceed the duration set for the primary channel NAV.

[0205] The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 301 can be implemented as an independent embodiment, step 302 can be implemented as an independent embodiment, step 303 can be implemented as an independent embodiment, and step 304 can be implemented as an independent embodiment; the combination of step 301 and step 302 can be implemented as an independent embodiment, the combination of step 301 and step 303 can be implemented as an independent embodiment, and the combination of step 302 and step 304 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0206] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3 .

[0207] FIG6 is a second schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG6 , the method includes:

[0208] In step 601 , the site device 101 sends a fourth radio frame on the primary channel; wherein the fourth radio frame requests the access point device 102 to send a data frame.

[0209] Station device 101 detects whether the primary channel is busy. Typically, each station device 101 on a network monitors whether other data is being transmitted on the channel before sending data, for example, through an energy detection (ED) mechanism. If station device 101 detects that the primary channel is idle, it transmits a fourth radio frame on the primary channel, requesting access point device 102 to send a data frame or buffer information.

[0210] Optionally, the fourth radio frame may include a request to send (RTS) frame. When the station device 101 sends the RTS frame, the access point device 102 may not be able to receive the fourth radio frame, for example, due to the presence of hidden nodes, or other hidden nodes communicating with the access point device 102, interfering with the access point device 102's reception of the fourth radio frame.

[0211] The second preset frame interval includes a preset time for receiving a response frame to the fourth radio frame. For example, the preset time may be preset to n short inter frame spaces (SIFS), where n is a positive integer. If the response frame fed back by the access point device 102 is received within the second preset frame interval, step 603 is executed; otherwise, step 602 is executed.

[0212] Step 602: If the fifth radio frame in response to the access point device 102 is not received within the second preset frame interval, the fourth radio frame is not sent repeatedly.

[0213] If the fifth radio frame in response to the access point device 102 is not received within the second preset frame interval, that is, the access point device 102 does not send the fifth radio frame in response to the fourth radio frame to the site device 101 within the preset time, the access point device 102 may not have received the fourth radio frame. In this case, the site device 101 does not repeatedly send the fourth radio frame, thereby avoiding wasting signaling resources caused by continuously and repeatedly sending the fourth radio frame.

[0214] Optionally, the fifth radio frame may be a clear to send (CTS) frame.

[0215] Step 604 : Send a sixth radio frame to the access point device 102 via a backoff mechanism on the auxiliary channel; wherein the sixth radio frame is used to trigger the access point device 102 to switch to the auxiliary channel to communicate with the station device 101 .

[0216] If the station device 101 and the access point device 102 have previously agreed to switch to the secondary channel for communication when the primary channel senses busy, then after step 602, the station device 101 and the access point device 102 may switch to the secondary channel for communication. The station device 101 sends a sixth radio frame to the access point device 102 on the secondary channel through a backoff mechanism. The sixth radio frame, such as an RTS frame or a buffer status report poll (BSRP) frame, triggers communication on the secondary channel through the sixth radio frame.

[0217] In some embodiments, the duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the time length of a BA message frame;

[0218] The duration field of the fourth radio frame is set to the sum of the durations of the following elements:

[0219] 2×SIFS+the sending duration of the fifth radio frame (for example, the sending duration of CTS)+the sending duration of the fourth radio frame (for example, the sending duration of RTS)+the sending duration of the confirmation message frame (BA message frame or ACK message frame).

[0220] Taking the fourth wireless frame as RTS, the fifth wireless frame as CTS, and the confirmation message frame as BA as an example, refer to Figure 4. The duration of the fourth wireless frame refers to the first wireless frame shown in Figure 4, including: 2×SIFS+CTS sending duration (or receiving duration) + the sending duration of the fourth wireless frame + the sum of the sending duration (or receiving duration) of the BA message frame; among them, 2×SIFS represents 2 SIFS respectively, namely S1 and S2 in Figure 4.

[0221] After the first SIFS ( S1 ), the station device 101 may receive the fifth radio frame.

[0222] The BA message frame is a Block Ack (BA) message frame.

[0223] In some embodiments, the duration of the sixth wireless frame includes: the sum of two short frame intervals, the transmission duration of the fifth wireless frame, the transmission duration of the fourth wireless frame, and the transmission duration of a BA message frame or an ACK message frame.

[0224] The duration field of the fourth radio frame is set to the sum of the durations of the following elements:

[0225] 2×SIFS+the sending duration of the fifth radio frame (for example, the sending duration of CTS)+the sending duration of the fourth radio frame (for example, the sending duration of RTS)+the sending duration of the confirmation message frame (BA message frame or ACK message frame).

[0226] The site device 101 transmits a sixth radio frame to the access point device 102 via the backoff mechanism on the auxiliary channel. Referring to the third radio frame shown in FIG5 , the third radio frame includes: 2×SIFS + the CTS transmission duration (or reception duration) + the fourth radio frame transmission duration + the BA or ACK message frame transmission duration (or reception duration); wherein 2×SIFS represents two SIFSs, namely, S1 and S2 in FIG5 .

[0227] Step 603: Receive the fifth radio frame; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

[0228] If the station device 101 does not sense that the primary channel is busy, the NAV is not set. However, if the access point device 102 senses that the primary channel is busy, the NAV needs to be set. Since the communication duration on the secondary channel does not exceed the set NAV duration of the primary channel, the duration of the fifth radio frame sent by the access point device 102 generally does not exceed the communication duration of the secondary channel. Therefore, the shorter of the duration of the fourth radio frame and the set NAV duration of the primary channel is selected as the duration of the fifth radio frame.

[0229] In some embodiments, the duration of the fourth radio frame is greater than the primary channel NAV setting duration, and the duration of the fifth radio frame is the primary channel NAV setting duration;

[0230] or

[0231] The duration of the fourth radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the duration of the fourth radio frame.

[0232] If the duration of the fourth radio frame is greater than the primary channel NAV setting duration, the duration of the fifth radio frame is the primary channel NAV setting duration, so that the duration of the fifth radio frame does not exceed the primary channel NAV setting duration.

[0233] If the duration of the fourth radio frame is less than or equal to the primary channel NAV setting duration, the duration of the fifth radio frame is the duration of the fourth radio frame, so that the durations of the two are consistent and will not exceed the primary channel NAV setting duration.

[0234] The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 601 can be implemented as an independent embodiment, step 602 can be implemented as an independent embodiment, step 603 can be implemented as an independent embodiment, and step 604 can be implemented as an independent embodiment; the combination of step 601 and step 602 can be implemented as an independent embodiment, the combination of step 601 and step 603 can be implemented as an independent embodiment, and the combination of step 602 and step 604 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0235] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 6 .

[0236] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0237] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0238] In some embodiments, terms such as wireless access scheme and waveform may be used interchangeably.

[0239] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0240] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0241] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0242] FIG7 is a flowchart of a communication method according to an embodiment of the present disclosure.

[0243] As shown in FIG. 7 , the above method may be applied to an access point device 102, and the above method includes:

[0244] Step 701: The access point device sends a first radio frame on a primary channel; wherein the first radio frame requests the station device to send a data frame or buffer information;

[0245] Step 702: If no second radio frame in response to the site device is received within a first preset frame interval, the first radio frame is not sent repeatedly.

[0246] Optionally, in the embodiment of the present disclosure, the method further includes:

[0247] Step 704: Send a third radio frame to the site device via a backoff mechanism on the auxiliary channel; wherein the third radio frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0248] Optionally, in the embodiment of the present disclosure, the duration of the first radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the time length of a BA message frame;

[0249] and / or

[0250] The duration of the third radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the transmission duration of the BA message frame or the ACK message frame.

[0251] Optionally, in the embodiment of the present disclosure, the first radio frame includes an RTS frame or a BSRP frame;

[0252] The second radio frame includes a CTS frame or a BSR frame;

[0253] and / or

[0254] The third radio frame includes an RTS frame or a BSRP frame.

[0255] Optionally, in the embodiment of the present disclosure, the method further includes:

[0256] Step 703: Receive the second radio frame; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel NAV.

[0257] Optionally, in an embodiment of the present disclosure, the duration of the first radio frame is greater than the NAV setting duration of the primary channel, and the duration of the second radio frame is the NAV setting duration of the primary channel;

[0258] or

[0259] The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is the duration of the first radio frame.

[0260] The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 701 can be implemented as an independent embodiment, step 702 can be implemented as an independent embodiment, step 703 can be implemented as an independent embodiment, and step 704 can be implemented as an independent embodiment; the combination of step 701 and step 702 can be implemented as an independent embodiment, the combination of step 701 and step 703 can be implemented as an independent embodiment, and the combination of step 702 and step 702 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0261] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 7 .

[0262] FIG8 is a second flow chart of a communication method according to an embodiment of the present disclosure.

[0263] As shown in FIG8 , the above method may be applied to a site device 101, and the above method includes:

[0264] Step 801: A station device receives a first radio frame sent by an access point device on a primary channel, or receives a third radio frame sent by the access point device through a backoff mechanism on a secondary channel.

[0265] The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0266] The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and receives no response from the station device within a first preset frame interval.

[0267] Optionally, in the embodiment of the present disclosure, the duration of the first radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the time length of a BA message frame;

[0268] and / or

[0269] The duration of the third radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the transmission duration of the BA message frame or the ACK message frame.

[0270] Optionally, in the embodiment of the present disclosure, the first radio frame includes an RTS frame or a BSRP frame;

[0271] The second radio frame includes a CTS frame or a BSR frame;

[0272] and / or

[0273] The third radio frame includes an RTS frame or a BSRP frame.

[0274] Optionally, in the embodiment of the present disclosure, after receiving the first radio frame sent by the access point device on the primary channel, the method further includes:

[0275] Step 802: The site device sends the second radio frame on the primary channel; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel NAV.

[0276] Optionally, in an embodiment of the present disclosure, the duration of the first radio frame is greater than the NAV setting duration of the primary channel, and the duration of the second radio frame is the NAV setting duration of the primary channel;

[0277] or

[0278] The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is the duration of the first radio frame.

[0279] The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 801 may be implemented as an independent embodiment, and step 802 may be implemented as an independent embodiment; the combination of step 801 and step 802 may be implemented as an independent embodiment, but is not limited thereto.

[0280] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 8 .

[0281] FIG9 is a third flowchart of a communication method according to an embodiment of the present disclosure.

[0282] As shown in FIG9 , the above method may be applied to a site device 101, and the above method includes:

[0283] Step 901: The station device sends a fourth radio frame on the primary channel; wherein the fourth radio frame requests the access point device to send a data frame;

[0284] Step 902: If the fifth radio frame in response to the access point device is not received within the second preset frame interval, the fourth radio frame is not sent repeatedly.

[0285] Optionally, in an embodiment of the present disclosure, the method includes:

[0286] Step 904: Send a sixth radio frame to the access point device via a backoff mechanism on the auxiliary channel; wherein the sixth radio frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device.

[0287] Optionally, in the embodiment of the present disclosure, the duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the time length of a BA message frame;

[0288] and / or

[0289] The duration of the sixth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the transmission duration of a BA message frame or an ACK message frame.

[0290] Optionally, in the embodiment of the present disclosure, the fourth radio frame includes an RTS frame;

[0291] The fifth radio frame includes a CTS frame;

[0292] and / or

[0293] The sixth radio frame includes an RTS frame.

[0294] Optionally, in the embodiment of the present disclosure, after sending the fourth radio frame, the method further includes:

[0295] Step 903: Receive the fifth radio frame; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

[0296] Optionally, in an embodiment of the present disclosure, the duration of the fourth radio frame is greater than the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the NAV setting duration of the primary channel;

[0297] or

[0298] The duration of the fourth radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the duration of the fourth radio frame.

[0299] The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 901 can be implemented as an independent embodiment, step 902 can be implemented as an independent embodiment, step 903 can be implemented as an independent embodiment, and step 904 can be implemented as an independent embodiment; the combination of step 901 and step 902 can be implemented as an independent embodiment, the combination of step 901 and step 903 can be implemented as an independent embodiment, and the combination of step 902 and step 902 can be implemented as an independent embodiment, but the present invention is not limited thereto.

[0300] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 9 .

[0301] FIG10 is a second flowchart of a communication method according to an embodiment of the present disclosure.

[0302] As shown in FIG10 , the above method may be applied to an access point device 102, and the above method includes:

[0303] Step 1001: The access point device receives a fourth radio frame sent by a station device on a primary channel, or receives a sixth radio frame sent by the station device through a backoff mechanism on a secondary channel.

[0304] The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device;

[0305] The sixth radio frame is sent by the station device as a fifth radio frame after no response is received from the access point device within a fourth preset frame interval after the station device sends the fourth radio frame.

[0306] Optionally, in the embodiment of the present disclosure, the duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the time length of a BA message frame;

[0307] and / or

[0308] The duration of the sixth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame, and the transmission duration of a BA message frame or an ACK message frame.

[0309] Optionally, in the embodiment of the present disclosure, the fourth radio frame includes an RTS frame;

[0310] The fifth radio frame includes a CTS frame;

[0311] and / or

[0312] The sixth radio frame includes an RTS frame.

[0313] Optionally, in the embodiment of the present disclosure, after receiving the fourth radio frame sent by the site device on the primary channel, the method further includes:

[0314] Step 1002: The access point device sends the fifth radio frame on the primary channel; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

[0315] Optionally, in an embodiment of the present disclosure, the duration of the fourth radio frame is greater than the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the NAV setting duration of the primary channel;

[0316] or

[0317] The duration of the fourth radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the duration of the fourth radio frame.

[0318] The communication method involved in the embodiments of the present disclosure may include at least one of the aforementioned steps and embodiments. For example, step 1001 may be implemented as an independent embodiment, and step 1002 may be implemented as an independent embodiment; the combination of step 1001 and step 1002 may be implemented as an independent embodiment, but is not limited thereto.

[0319] In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 10 .

[0320] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0321] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0322] In the embodiment of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and execution capability, 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 relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as 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 implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0323] FIG11 is a schematic diagram of the structure of an access point device according to an embodiment of the present disclosure. As shown in FIG11 , the access point device 1100 may include at least one of a first sending module 1101 and a first receiving module 1102 .

[0324] In some embodiments, the first sending module 1101 is configured to send a first radio frame on a primary channel; wherein the first radio frame requests the site device to send a data frame or cache information.

[0325] The first receiving module 1102 is configured to not repeatedly send the first radio frame if no second radio frame in response to the site device is received within a first preset frame interval.

[0326] Optionally, the first sending module 1101 is configured to execute at least one of the communication steps (eg, step 301 and step 401) executed by the access point device 102 in any of the above methods, and the first sending module 1102 is configured to execute step 302 and step 402, which are not described in detail herein.

[0327] FIG12 is a schematic diagram of the structure of a site device according to an embodiment of the present disclosure. As shown in FIG12 , the site device 1200 may include: a second receiving module 1201 .

[0328] In some embodiments, the second receiving module 1201 is configured to receive a first radio frame sent by an access point device on a primary channel, or receive a third radio frame sent by the access point device through a backoff mechanism on a secondary channel;

[0329] The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

[0330] The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and receives no response from the station device within a first preset frame interval.

[0331] Optionally, the second receiving module 1201 is configured to execute at least one of the communication steps (eg, step 303 and step 501 but not limited thereto) executed by the site device 101 in any of the above methods, which will not be described in detail here.

[0332] FIG13 is a schematic diagram of the structure of a site device according to an embodiment of the present disclosure. As shown in FIG13 , the site device 1300 may include: a second sending module 1301 and a third receiving module 1302 .

[0333] In some embodiments, the second sending module 1301 is configured to send a fourth radio frame on the primary channel; wherein the fourth radio frame requests the access point device to send a data frame;

[0334] The third receiving module 1302 is configured to not repeatedly send the fourth radio frame if the fifth radio frame responded by the access point device is not received within a second preset frame interval.

[0335] Optionally, the second sending module 1301 is used to execute at least one of the communication steps (such as step 301 and step 601, but not limited to this) performed by the site device 101 in any of the above methods, and the third receiving module 1302 executes step 302 and step 602, which are not repeated here.

[0336] FIG14 is a schematic diagram of the structure of an access point device according to an embodiment of the present disclosure. As shown in FIG14 , the access point device 1400 may include: a fourth receiving module 1401 .

[0337] In some embodiments, the fourth receiving module 1401 is configured to receive a fourth radio frame sent by a station device on a primary channel, or receive a sixth radio frame sent by the station device through a backoff mechanism on a secondary channel;

[0338] The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device;

[0339] The sixth radio frame is sent by the station device as a fifth radio frame after no response is received from the access point device within a fourth preset frame interval after the station device sends the fourth radio frame.

[0340] Optionally, the fourth receiving module 1401 is configured to execute at least one of the communication steps (eg, step 303 and step 701 , but not limited thereto) executed by the access point device 102 in any of the above methods, which will not be described in detail herein.

[0341] Figure 15 is a schematic diagram of the structure of a terminal 1500 (e.g., user equipment) proposed in an embodiment of the present disclosure. Terminal 1500 can be a chip, chip system, or processor that supports a network device implementing any of the above methods, or a chip, chip system, or processor that supports a terminal implementing any of the above methods. Terminal 1500 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0342] As shown in Figure 15, terminal 1500 includes one or more processors 1501. Processor 1501 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control communication devices (such as base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Terminal 1500 is used to perform any of the above methods.

[0343] In some embodiments, the terminal 1500 further includes one or more memories 1502 for storing instructions. Optionally, all or part of the memories 1502 may be located outside the terminal 1500.

[0344] In some embodiments, the terminal 1500 further includes one or more transceivers 1504. When the terminal 1500 includes one or more transceivers 1504, the transceiver 1504 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step 301, step 303, step 304, step 303, step 601, step 604, step 603, step 701, step 704, step 703, step 801, step 802, step 901, step 904, step 903, step 1001, step 1002, but not limited thereto), and the processor 1501 performs at least one of the other steps (for example, step 302, step 602, step 702, but not limited thereto).

[0345] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0346] In some embodiments, terminal 1500 may include one or more interface circuits 1503. Optionally, interface circuit 1503 is connected to memory 1502. Interface circuit 1503 may be configured to receive signals from memory 1502 or other devices, and may be configured to send signals to memory 1502 or other devices. For example, interface circuit 1503 may read instructions stored in memory 1502 and send the instructions to processor 1501.

[0347] The terminal 1500 described in the above embodiment may be a communication device such as a user device, but the scope of the terminal 1500 described in the present disclosure is not limited thereto, and the structure of the terminal 1500 may not be limited by FIG. 15 . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0348] FIG16 is a schematic diagram of the structure of a chip 1600 according to an embodiment of the present disclosure. If the terminal 1500 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 1600 shown in FIG16 , but the present disclosure is not limited thereto.

[0349] The chip 1600 includes one or more processors 1601 , and the chip 1600 is configured to execute any of the above methods.

[0350] In some embodiments, chip 1600 further includes one or more 1603. Optionally, interface circuit 1603 is connected to memory 1602. Interface circuit 1603 can be used to receive signals from memory 1602 or other devices, and interface circuit 1603 can be used to send signals to memory 1602 or other devices. For example, interface circuit 1603 can read instructions stored in memory 1602 and send the instructions to processor 1601.

[0351] In some embodiments, the interface circuit 1603 executes at least one of the communication steps such as sending and / or receiving in the above method, such as step 301, step 303, step 304, step 303, step 601, step 604, step 603, step 701, step 704, step 703, step 801, step 802, step 901, step 904, step 903, step 1001, step 1002 but not limited thereto), and the processor 1601 executes at least one of the other steps (such as step 302, step 602, step 702, but not limited thereto).

[0352] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0353] In some embodiments, chip 1600 also includes one or more memories 1602 for storing instructions. Alternatively, all or part of memory 1602 may be external to chip 1600.

[0354] The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the terminal 1500, the terminal 1500 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0355] The present disclosure also provides a program product, which, when executed by the terminal 1500, enables the terminal 1500 to perform any of the above methods. Optionally, the program product is a computer program product.

[0356] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. A communication method, characterized in that: The method comprises: The access point device sends a first wireless frame on the primary channel; wherein the first wireless frame requests the site device to send a data frame or cache information; If the second radio frame in response to the station device is not received within the first preset frame interval, the first radio frame is not sent repeatedly.

2. The communication method according to claim 1, characterized in that: The method further comprises: A third radio frame is sent to the site device through a random backoff mechanism on the auxiliary channel; wherein the third radio frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device.

3. The communication method according to claim 2, characterized in that: The duration of the first radio frame includes: two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame and the time length of the BA message frame; and / or The duration of the third radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the transmission duration of a block acknowledgment BA message frame or an acknowledgment ACK message frame.

4. The communication method according to claim 2, characterized in that: The first radio frame includes a request to send an RTS frame or a buffer status report polling BSRP frame; The second radio frame includes a clear to send CTS frame or a buffer status report BSR frame; and / or The third radio frame includes an RTS frame or a BSRP frame.

5. The communication method according to claim 1, characterized in that: After sending the first radio frame, the method further includes: The second radio frame is received; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel network allocation vector NAV.

6. The communication method according to claim 5, characterized in that: The duration of the first radio frame is greater than the NAV setting duration of the primary channel, and the duration of the second radio frame is the NAV setting duration of the primary channel; or The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is the duration of the first radio frame.

7. A communication method, characterized in that: The method comprises: The station device receives a first radio frame sent by the access point device on a primary channel, or receives a third radio frame sent by the access point device through a backoff mechanism on an auxiliary channel; The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and no response is received from the station device within a first preset frame interval.

8. The communication method according to claim 7, characterized in that: The duration of the first radio frame includes: two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame and the time length of the BA message frame; and / or The duration of the third radio frame includes: the sum of two short frame intervals, the transmission duration of the second radio frame, the transmission duration of the first radio frame, and the transmission duration of a BA message frame or an ACK message frame.

9. The communication method according to claim 8, characterized in that: The first radio frame includes an RTS frame or a BSRP frame; The second radio frame includes a CTS frame or a BSR frame; and / or The third radio frame includes an RTS frame or a BSRP frame.

10. The communication method according to claim 7, characterized in that: After receiving the first wireless frame sent by the access point device on the primary channel, the method further includes: The site device sends the second radio frame on the primary channel; wherein the duration of the second radio frame is the duration of the first radio frame or the set duration of the primary channel NAV.

11. The communication method according to claim 10, characterized in that: The duration of the first radio frame is greater than the NAV setting duration of the primary channel, and the duration of the second radio frame is the NAV setting duration of the primary channel; or The duration of the first radio frame is less than or equal to the NAV setting duration of the primary channel, and the duration of the second radio frame is is the duration of the first radio frame.

12. A communication method, characterized in that: The method comprises: The site device sends a fourth wireless frame on the primary channel; wherein the fourth wireless frame requests the access point device to send a data frame; If the fifth radio frame responded by the access point device is not received within the second preset frame interval, the fourth radio frame is not sent repeatedly.

13. The communication method according to claim 12, characterized in that: The method further comprises: A sixth radio frame is sent to the access point device through a backoff mechanism on the auxiliary channel; wherein the sixth radio frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device.

14. The communication method according to claim 13, characterized in that: The duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame and the time length of the BA message frame; and / or The duration of the sixth radio frame includes: the sum of two short frame intervals, the sending duration of the fifth radio frame, the sending duration of the fourth radio frame, and the sending duration of a BA message frame or an ACK message frame.

15. The communication method according to claim 13, characterized in that: The fourth radio frame includes an RTS frame; The fifth radio frame includes a CTS frame; and / or The sixth radio frame includes an RTS frame.

16. The communication method according to claim 12, characterized in that: After sending the fourth radio frame, the method further includes: The fifth radio frame is received; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

17. The communication method according to claim 16, characterized in that: The duration of the fourth radio frame is greater than the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the NAV setting duration of the primary channel; or The duration of the fourth radio frame is less than or equal to the primary channel NAV setting duration, and the duration of the fifth radio frame is the duration of the fourth radio frame.

18. A communication method, characterized in that: The method comprises: The access point device receives the fourth radio frame sent by the station device on the primary channel, or receives the sixth radio frame sent by the station device through the backoff mechanism on the auxiliary channel; The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device; The sixth radio frame is sent by the station device after sending the fourth radio frame and receiving no response from the access point device within a fourth preset frame interval.

19. The communication method according to claim 18, characterized in that: The duration of the fourth radio frame includes: the sum of two short frame intervals, the transmission duration of the fifth radio frame, the transmission duration of the fourth radio frame and the time length of the BA message frame; and / or The duration of the sixth radio frame includes: the sum of two short frame intervals, the sending duration of the fifth radio frame, the sending duration of the fourth radio frame, and the sending duration of a BA message frame or an ACK message frame.

20. The communication method according to claim 19, characterized in that: The fourth radio frame includes an RTS frame; The fifth radio frame includes a CTS frame; and / or The sixth radio frame includes an RTS frame.

21. The communication method according to claim 18, characterized in that: After receiving the fourth radio frame sent by the site device on the primary channel, the method further includes: The access point device sends the fifth radio frame on the primary channel; wherein the duration of the fifth radio frame is the duration of the fourth radio frame or the set duration of the primary channel NAV.

22. The communication method according to claim 21, characterized in that: The duration of the fourth radio frame is greater than the NAV setting duration of the primary channel, and the duration of the fifth radio frame is the NAV setting duration of the primary channel; or The duration of the fourth radio frame is less than or equal to the primary channel NAV setting duration, and the duration of the fifth radio frame is the duration of the fourth radio frame.

23. An access point device, characterized in that: The access point device comprises: A first sending module, configured to send a first wireless frame on a primary channel; wherein the first wireless frame requests a site device to send a data frame or cache information; The first receiving module is configured to not repeatedly send the first wireless frame if the second wireless frame in response to the station device is not received within a first preset frame interval.

24. A site device, characterized in that: The site equipment includes: A second receiving module is used to receive a first wireless frame sent by the access point device on a primary channel, or to receive a third wireless frame sent by the access point device through a backoff mechanism on an auxiliary channel; The first wireless frame requests the site device to send a data frame or cache information; the third wireless frame is used to trigger the site device to switch to the auxiliary channel to communicate with the access point device The third radio frame is a second radio frame sent by the access point device after the access point device sends the first radio frame and no response is received from the station device within a first preset frame interval.

25. A site device, characterized in that: The site equipment includes: A second sending module, configured to send a fourth wireless frame on the primary channel; wherein the fourth wireless frame requests the access point device to send a data frame; The third receiving module is configured to not repeatedly send the fourth wireless frame if the fifth wireless frame responded by the access point device is not received within a second preset frame interval.

26. An access point device, characterized in that: The access point device comprises: A fourth receiving module, configured to receive a fourth radio frame sent by the site device on a primary channel, or to receive a sixth radio frame sent by the site device through a backoff mechanism on an auxiliary channel; The fourth wireless frame requests the access point device to send a data frame; the sixth wireless frame is used to trigger the access point device to switch to the auxiliary channel to communicate with the site device; The sixth radio frame is sent by the station device after sending the fourth radio frame and receiving no response from the access point device within a fourth preset frame interval.

27. A communication device, characterized in that: include: one or more processors; The communication device is used to execute the communication method according to any one of claims 1 to 22.

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