WO2021078011A1 - Wlan communication method, controller and ap - Google Patents

Abstract

A wireless local area network (WLAN) communication method, a controller, an access point (AP), which are used to implement a dynamic allocation of channel resources in a WLAN. The method of the present application includes: the controller allocates each sub-channel in a group working channel corresponding to an AP device group to the AP device group according to a channel access requirement of the AP device group and a channel arrangement, wherein, the channel arrangement is used to indicate a sub-channel available for the AP in the AP device group within a first time period, after the controller obtains the updated channel access requirement, the controller allocates the sub-channel in the group working channel to the AP device group according to the updated channel access requirement and the updated channel arrangement, wherein, the updated channel arrangement is used to indicate a channel available for the AP in the AP device group within a second time period, so as to enable the controller to dynamically allocates the channel resources corresponding to the AP device group in the first time period and the second time period, that is, the controller realizes the dynamic allocation of the channel resources in the WLAN.

Description

Wireless local area network communication method, controller and access point

This application claims the priority of the Chinese patent application filed on October 25, 2019 with the application number 201911025948.1, and the invention title is "a wireless local area network communication method, controller, and access point", the entire contents of which are incorporated by reference In this application.

Technical field

This application relates to the field of wireless local area networks, and in particular to a wireless local area network (WLAN) communication method, controller, and access point (AP).

Background technique

In order to meet the needs of enterprises in WLAN coverage, as shown in Figure 1, the network structure of the WLAN can be set to a wireless controller 101 and multiple access points (AP) 102 connected to the wireless controller 101. . In addition, the network structure of the WLAN may also be set as shown in FIG. 2. In this network structure, a remote radio unit (RRU) 103 is connected to each central AP 102.

Generally, 20 megahertz (MHz), 40MHz, 80MHz, 160MHz or larger bandwidth communication can be used in WLAN. Among them, 40MHz, 80MHz, 160MHz and other bandwidths are obtained by combining multiple 20MHz bandwidths.

Adjacent APs occupy different channels to reduce interference. For example, neighboring APs occupy different 20MHz bandwidths. Due to the large number of channels in the 20MHz bandwidth, APs that use the same channel are not neighbors. Therefore, the distance between APs using the same channel is large, and mutual interference is small or no mutual interference. However, in the above deployment, each AP can only use 20MHz bandwidth resources, and the transmission rate is low. If there is a sudden situation with a large amount of transmitted data, it will take a long time for the AP to complete the transmission.

Summary of the invention

This application provides a WLAN communication method, controller, and AP, which are used to implement dynamic allocation of channel resources in the WLAN.

The first aspect of the present application provides a WLAN communication method, which can be applied to a controller in a WLAN, wherein one end of the controller is connected to the WLAN cloud network, and the other end of the controller is connected to the AP device group to achieve Communication between the station STA associated with each AP in the AP device group and the WLAN cloud network. When the controller allocates channel resources in the WLAN, the controller can obtain the channel access requirements of the AP device group. The AP device group includes at least two APs, and the AP device group has the largest working channel bandwidth. The working channel is the group working channel of the AP device group, where the bandwidth of the group working channel is at least 40 MHz, and the working channel of any AP in the AP device group is the same as the group working channel or is within the group working channel. In the AP device group, there are at least two AP working channels with different main channels; then, the controller allocates each sub-channel in the group working channel to the AP device group according to the channel access requirements of the AP device group. At least one AP in the AP device group, where the channel arrangement is used to indicate the sub-channels available to the APs in the AP device group in the first time period, and the channel arrangement may include the available sub-channels for one or more APs. The sub-channels allocated to any two APs in the channel arrangement are different. In addition, the sub-channels allocated to each AP in the channel arrangement include the main channel in the working channel corresponding to each AP. Each AP in the AP device group is allocated The allocated sub-channels are in the working channels corresponding to each AP. If the channel arrangement includes arrangements for more than one AP, the main channels of the working channels of any two APs in the channel arrangement are different; After the AP device group obtains the channel access requirements of the AP device group, the controller obtains the updated channel access requirements of the AP device group. Thereafter, the controller adjusts the sub-channels in the group working channel according to the updated channel access requirements according to the updated channel access requirements. Arrange to be allocated to at least one AP in the AP device group, where the updated channel arrangement is used to indicate the channels available to APs in the AP device group in the second time period, and the working channels of each AP in the AP device group It remains unchanged during the first time period and the second time period.

Therefore, the controller assigns each sub-channel in the group working channel corresponding to the AP device group to the AP device group according to the channel arrangement according to the channel access requirements of the AP device group, where the channel arrangement is used to indicate the The sub-channels available to the APs in the AP device group. After the controller obtains the updated channel access requirements, the controller assigns the sub-channels in the group working channel to the AP according to the updated channel access requirements. Device group, wherein the updated channel arrangement is used to indicate the channels available to the APs in the AP device group in the second time period, so that the controller can control the channel resources corresponding to the AP device group in the first time period and the second time period The dynamic allocation of WLAN is to realize the dynamic allocation of the channel resources in the WLAN by the controller.

Based on the first aspect of the present application, in the first possible implementation manner of the first aspect of the present application, the number of APs in the AP device group is the same as the number of subchannels included in the group working channel, and any two of the AP device groups The main channel of the working channel of each AP is different. Each sub-channel included in the group working channel corresponds to the main channel of the working channel of each AP in the AP device group. Therefore, the main channel of the working channel of each AP in the AP device group is staggered, and it can operate independently without interfering with each other. Utilization efficiency of working channel. On the premise of ensuring that the main channels of the working channels of all APs are staggered, the number of sub-channels included in the group working channel is the upper limit of the number of APs in the AP device group. Therefore, the AP device group in the implementation manner can accommodate the largest number of APs that can run arbitrarily independently.

Based on the first aspect of the application or the first possible implementation of the first aspect, in the second possible implementation of the first aspect of the application, the controller sends the channel arrangement or the part of the channel arrangement corresponding to each AP Give the corresponding AP in the AP device group, so that each AP in the AP device group can use the channel resources corresponding to each AP to process services in the first time period according to the channel arrangement. The controller can also send the updated channel arrangement or the part of the updated channel arrangement corresponding to each AP to the corresponding AP in the AP device group, so that each AP in the AP device group can be arranged in the second time period according to the updated channel. The channel resources corresponding to each AP are used to process services, so that each AP realizes service processing through the dynamic allocation of channel resources.

The second aspect of the present application provides a WLAN communication method, which can be applied to an AP in a WLAN, where the AP receives a first indication from a controller, and the first indication is used to indicate a first channel arrangement. It is arranged as a sub-channel available for the AP in the first time period, the bandwidth of the AP's working channel is at least 40 MHz, the first channel arrangement includes the main channel of the AP's working channel, and the first channel arrangement The indicated sub-channel available to the AP in the first time period is in the working channel of the AP; after that, the AP receives a second indication from the controller, and the second indication is used to indicate the second channel arrangement. The arrangement is a sub-channel available to the AP in the second time period, the second channel arrangement includes the main channel of the AP’s working channel, and the AP’s available in the first time period indicated by the second channel arrangement The sub-channel is also in the working channel of the AP. In addition, the second channel arrangement is different from the first channel arrangement, but the working channel of the AP remains unchanged during the first time period and the second time period. Among them, the AP's working channel refers to the AP's access capability, that is, the maximum channel resource that the AP can use. Among the first and second instructions sent by the controller, the first instruction includes the AP's first time period. The second indication includes the sub-channels available to the AP in the second time period, and the second channel arrangement is different from the first channel arrangement, so the AP can determine the first time according to the controller’s instructions The sub-channels available in the second time period and the second time period realize the dynamic allocation of channel resources by the controller.

Based on the second aspect of the present application, in the first implementation manner of the second aspect of the present application, if the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, the AP transmits in the first time period When the WLAN signal is used, the unavailable sub-channels in the AP’s working channel are punctured. That is, when the AP determines that the available sub-channels are not the AP’s working channel according to the first channel arrangement, the AP will follow-up at the first time When WLAN signals are sent in a segment to process service data, the sub-channels that are not available in the AP's working channel are punctured, so that APs with different available sub-channels can transmit data in parallel in the first time period without interference. At the same time, using the channel puncturing mechanism can enable channels of discontinuous bandwidth to be channel-bonded to transmit data; similarly, if the second channel arrangement indicates that there are unavailable sub-channels in the AP’s working channel, the AP is in When the WLAN signal is sent in the second time period, the unavailable sub-channels in the working channel of the AP are punctured, so that APs with different available sub-channels can transmit data in parallel in the second time period without interfering with each other.

Based on the second aspect of the present application or the first possible implementation of the second aspect, in the second possible implementation of the second aspect of the present application, if the first channel arrangement indicates that the AP’s working channel is unavailable Sub-channel, when the AP sends the first trigger frame to the station STA associated with the AP within the first time period, the puncturing indication for the STA is set in the first trigger frame, where the puncturing indication is used to indicate the STA When the uplink signal is sent based on the first trigger frame, the sub-channels that are not available in the working channel of the AP are punctured, so that the AP communicates with other APs when processing the uplink signal sent by the STA associated with the AP in the first time period. Do not interfere with each other. Similarly, if the second channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends the second trigger frame to the STA associated with the AP in the second time period, the second trigger frame The puncturing indication for the STA is set in the STA, where the puncturing indication is used to instruct the STA to perform puncturing processing on subchannels that are not available in the AP’s working channel when the STA sends an uplink signal based on the second trigger frame, so that the AP is The STA associated with the AP does not interfere with other APs when sending uplink signals in the second time period.

Based on the second aspect of the present application, the first possible implementation manner of the second aspect, or the second possible implementation manner of the second aspect, in the third possible implementation manner of the second aspect of the present application, the AP sends to the controller The buffer status report or summary of the buffer status report of the STA associated with the AP. Among them, the buffer status report or the summary of the buffer status report of the STA associated with the AP can be used as the basis or one of the basis for the controller to determine the channel access requirement of the AP, so that the controller can realize the channel access requirement according to the channel access requirement. Dynamic allocation of resources.

The third aspect of the present application provides a controller, which has the function of implementing the above-mentioned first aspect or any one of the possible implementation methods of the first aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions, such as: an acquisition unit, a distribution unit, and a sending unit.

The fourth aspect of the present application provides an AP, which has the function of implementing the foregoing second aspect or any one of the possible implementation methods of the second aspect. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions, such as a receiving unit, a processing unit, and a sending unit.

A fifth aspect of the present application provides a controller, which includes a processor and a memory; the memory is used to store a program; the processor is used to execute the program to implement any possible implementation as in the first aspect or the first aspect The method described in the way.

The sixth aspect of the present application provides an AP. The AP includes a processor and a memory; the memory is used to store a program; and the processor is used to execute the program to implement the above-mentioned second aspect or any one of the possible implementation manners of the second aspect. The method described.

A seventh aspect of the present application provides a computer-readable storage medium that stores one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes any one of the above-mentioned first aspect or the first aspect. The method described in the implementation mode.

The eighth aspect of the present application provides a computer-readable storage medium storing one or more computer-executable instructions. When the computer-executable instructions are executed by a processor, the processor executes any one of the above-mentioned second aspect or the second aspect. The method described in the implementation mode.

The ninth aspect of the present application provides a computer program product (or computer program) storing one or more computers. When the computer program product is executed by the processor, the processor executes the first aspect or any one of the first aspects. A possible way to achieve this.

The tenth aspect of the present application provides a computer program product storing one or more computers. When the computer program product is executed by the processor, the processor executes the above-mentioned second aspect or any one of the possible implementation methods of the second aspect .

The eleventh aspect of the present application provides a chip system, which includes a processor, and is configured to support a controller to implement the above-mentioned first aspect or the functions involved in any one of the possible implementation manners of the first aspect. In a possible design, the chip system may also include a memory, and the memory is used to store the necessary program instructions and data of the controller. The chip system can be composed of chips, or include chips and other discrete devices.

A twelfth aspect of the present application provides a chip system, which includes a processor, and is configured to support an AP to implement the above-mentioned second aspect or any one of the possible implementation manners of the second aspect. In a possible design, the chip system may also include a memory, and the memory is used to store the necessary program instructions and data of the AP. The chip system can be composed of chips, or include chips and other discrete devices.

Among them, the third, fifth, seventh, ninth and eleventh aspects or the technical effects brought by any one of the possible implementations can be referred to the first aspect or the technologies brought about by the different possible implementations of the first aspect The effect will not be repeated here.

Among them, the fourth, sixth, eighth, tenth and twelfth aspects or the technical effects brought by any one of the possible implementation methods can be referred to the technologies brought about by the second aspect or the different possible implementation methods of the second aspect The effect will not be repeated here.

Description of the drawings

FIG. 1 is a schematic diagram of a network structure of a WLAN in an embodiment of the application;

FIG. 2 is another schematic diagram of the network structure of the WLAN in an embodiment of the application;

FIG. 3 is another schematic diagram of the network structure of the WLAN in an embodiment of the application;

FIG. 4 is a schematic diagram of a WLAN communication method in an embodiment of this application;

FIG. 5 is another schematic diagram of a WLAN communication method in an embodiment of this application;

FIG. 6 is another schematic diagram of a WLAN communication method in an embodiment of this application;

FIG. 7 is another schematic diagram of a WLAN communication method in an embodiment of this application;

FIG. 8 is a schematic diagram of a controller in an embodiment of the application;

FIG. 9 is a schematic diagram of an AP in an embodiment of this application;

FIG. 10 is another schematic diagram of a controller in an embodiment of the application;

FIG. 11 is another schematic diagram of an AP in an embodiment of this application.

Detailed ways

Please refer to Figure 1. In order to meet the needs of enterprises in the coverage of WLAN, the network structure of the WLAN can be set to a wireless controller 101 and multiple APs 102 connected to the wireless controller 101. At this time, the AP serves as the access point of the station STA. Entry point to realize the network communication of STA. In addition, based on the network architecture of Figure 1, the WLAN network structure can also be set as shown in Figure 2. In this network structure, each central AP102 is connected to the RRU103. At this time, the RRU serves as the access point of the station STA. Realize STA network communication. Exemplarily, the network architecture in FIG. 1 and FIG. 2 can be referred to as shown in FIG. 3 in the specific implementation process, where AP and RRU can be used as the network access device 301 directly with the STA, and multiple network access devices 301 A continuous networking form is presented in geographic location. For example, in an enterprise network configuration, a network access device 301 is deployed every 10-20 meters (m) to realize network access of each STA.

Generally speaking, 20MHz, 40MHz, 80MHz, 160MHz or larger bandwidth communication can be used in WLAN. Among them, 40MHz, 80MHz, 160MHz and other large bandwidths are obtained by combining multiple 20MHz bandwidths. When there is more than one AP in the WLAN network structure and there are available channel resources with a large bandwidth, the channel bandwidth resource allocation can generally be realized by the controller, that is, the allocation of large bandwidth resources can be realized by the pre-configuration of the controller.

For example, the controller can set the network between multiple APs to be deployed in an exclusive bandwidth mode, that is, the controller configures each channel to only a certain AP as the working channel of the AP, that is to say, each AP occupies a different 20MHz bandwidth , So that the data transmission of the STAs connected to different APs (including the STAs directly accessing the AP and the STAs accessing the AP through the RRU) do not interfere with each other. However, in the above deployment, each AP can only use 20MHz bandwidth resources, and the transmission rate is low. If there is a sudden situation with a large amount of transmitted data, it will take a long time for the AP to complete the transmission. To this end, the embodiments of the present application provide a WLAN communication method, controller, and AP, which are used to implement dynamic allocation of channel resources in the WLAN. The following will introduce the WLAN communication method, controller, and AP in this application through specific embodiments.

Referring to FIG. 4, an embodiment of a WLAN communication method in the embodiment of the present application includes:

401. The controller obtains the channel access requirement of the AP device group.

In this embodiment, when the controller allocates channel resources in the WLAN, the controller can obtain the channel access requirements of the AP device group. The AP device group includes at least two APs, that is, the controller obtains the AP device group. The channel access requirements of each AP.

The method for the controller to obtain the channel access requirement of the AP device group may be that the controller actively obtains the characteristic information of each AP in the AP device group as the channel access requirement of the AP device group, where the characteristic information may include historical traffic information of the AP , AP’s downlink queue information, AP’s priority identification and/or interaction information between APs, etc., or each AP in the AP device group sends status information to the controller, and the controller determines the status information according to the status information. The channel access requirements of each AP in the AP device group, where the status information may include the uplink queue information of the AP, the resource request of the AP, and/or the buffer status report or the summary of the buffer status report of the STA associated with the AP, etc.

The working channel of the AP with the largest working channel bandwidth in the AP device group is the group working channel of the AP device group, where the bandwidth of the group working channel is at least 40 MHz, that is, the AP device group includes large bandwidth resources , The group working channel of the AP device group can be 40MHz, 80MHz, 160MHz or larger. The working channel of any AP in the AP device group is the same as or within the group of working channels, and there are at least two APs in the AP device group whose main channels are different.

Here, the AP device group includes n APs (namely AP1..., APn), and its group working channel is (m*20) MHz (namely channel 1..., channel m) as an example. Among n APs, the working channel of each AP includes one or more of channel 1 to channel n, that is, the bandwidth of the working channel of each AP is 20MHz...or (m*20)MHz, and The working channel of at least one AP among the n APs is the group of working channels, that is, (m*20) MHz. In addition, each AP depends on the main channel of each AP when working, that is to say, the working channel of each AP must include the main channel corresponding to each AP. Therefore, in order to realize the dynamic allocation of channel bandwidth among multiple APs, The working channels of at least two APs in the AP device group have different main channels, so that dynamic allocation of the at least two APs is implemented in the subsequent steps.

402. The controller allocates the sub-channels in the group working channel to at least one AP in the AP device group according to the channel arrangement according to the channel access requirement.

In this embodiment, the controller allocates each sub-channel in the working channel of the group to at least one AP in the AP device group according to the channel arrangement according to the channel access requirement of the AP device group obtained in step 401, wherein the channel arrangement uses To indicate the available sub-channels of APs in the AP device group in the first time period, the channel arrangement may include the allocation of available sub-channels to one or more APs, and any two APs in the channel arrangement are allocated The sub-channels are different. Specifically, the channel access requirement may indicate the channel access requirement of each AP in the first time period, so that the channel arrangement in the first time period can be determined according to the channel access requirement.

It can be seen from the foregoing that the group working channel is at least 40 MHz, that is, the number of channels in the group working channel is at least two. At this time, the channel arrangement is used to indicate the correspondence between the sub-channels in the group working channel and at least one AP, that is, to indicate The sub-channel in this group of working channels belongs to only one AP for use in the first time period, and other APs cannot use the sub-channel in the first time period. Therefore, in this channel arrangement, any two APs are used by The allocated sub-channels are different.

Among them, the AP depends on the main channel of each AP when working, that is, the working channel of each AP must include the main channel corresponding to each AP. Therefore, the sub-channels allocated to each AP in the channel arrangement include the corresponding The main channel in the working channel of each AP, and the sub-channels allocated to each AP of the AP device group are in the working channels of each AP, that is, the sub-channels allocated to each AP are included in the working channels of each AP.

In addition, since the main channel of each AP's working channel is also included in the group of working channels, the main channel of each AP's working channel can only be used by a certain AP in the first time period, that is, if it is in the AP When there are two APs with the same main channel of the working channel in the device group, the channel arrangement indicates that only one of the APs can use the main channel in the first time period, so if the channel arrangement includes more than one AP The main channel of the working channel of any two APs in the channel arrangement is different. Based on this, an AP in the AP device group that is not allocated an available sub-channel by the channel arrangement cannot perform service data transmission in the working channel of the group within the first time period.

403. The controller obtains the updated channel access requirement of the AP device group.

In this embodiment, after the controller obtains the channel access requirement of the AP device group in step 401, the controller obtains the updated channel access requirement of the AP device group, where the updated channel access requirement may indicate that each AP is in the first 2. Channel access requirements in the time period.

Among them, as mentioned above, there are many ways for the controller to obtain channel access requirements. For example, the controller may actively obtain the updated channel access requirements, and the controller may also determine the updated channel access requirements by receiving data sent by each AP. The channel access requirements of the network are not limited here.

404. The controller allocates the sub-channels in the group working channel to at least one AP in the AP device group according to the updated channel arrangement according to the updated channel access requirement.

In this embodiment, the controller allocates the sub-channels in the group working channel to at least one AP in the AP device group according to the updated channel arrangement according to the updated channel access requirements obtained in step 403, where the updated channel arrangement It is used to indicate channels available to APs in the AP device group in the second time period, and the working channels of each AP in the AP device group remain unchanged in the first time period and the second time period.

Specifically, the first time period and the second time period may be the same time period. For example, after step 402, before the current time reaches the start time of the first time period, when the controller according to the AP device group When the updated channel access requirement determines that the channel arrangement in step 402 needs to be adjusted, step 404 is executed to update the sub-channels available for each AP in the AP device group in the first time period; in addition, the first time period The second time period may also be a different time period. For example, the start time of the second time period may be after the start time of the first time period, after step 402, when the current time is in the first time period After the start time and the current time before the end time of the first time period, when the controller determines that the channel arrangement in step 402 needs to be adjusted according to the updated channel access requirements in the AP device group, step 404 is executed. It is used to update the available sub-channels of the APs in the AP device group in the second time period. The first time period and the second time period may also have other relationships, which are not limited here.

As a preferred solution, the first time period and the second time period may be different sequential time periods in the cycle change process, for example, if the period is T (0.0001 second, 0.001 second, 0.02 second or other time period), Then the first time period may indicate the time period from time (n-1)T to time nT, and the second time period may indicate the time period from time nT to time (n+1)T, thus step 401 and step The execution process of 403 may also be that the controller periodically obtains the channel access requirements of each AP in the AP device group.

It should be noted that the working channel of each AP in the AP device group may be the working channel pre-allocated for each AP when the controller accesses each AP for the first time, or the controller may perform further operations according to the acquired control strategy. Adjustment. In the embodiment of the present application, for the purpose of realizing dynamic adjustment of channel resources, in order to reduce the impact on the STA during the channel resource adjustment process, the time interval between the first time period and the second time period may be shorter Time interval (for example, 100ms, 200ms or other time intervals), therefore, the working channel of each AP in the AP device group remains unchanged in a short time interval, that is, in the first time period and the second time period The inside remains unchanged.

In this embodiment, the controller allocates each sub-channel in the group working channel corresponding to the AP device group to the AP device group according to the channel arrangement according to the channel access requirements of the AP device group, where the channel arrangement is used to indicate the first time For the sub-channels available to the APs in the AP device group in the segment, after the controller obtains the updated channel access requirements, the controller allocates the sub-channels in the group working channel according to the updated channel arrangement according to the updated channel access requirements For the AP device group, the updated channel arrangement is used to indicate the channels available to the APs in the AP device group in the second time period, so that the controller can control the channel resources corresponding to the AP device group in the first time period and the first time period. The dynamic allocation of the second time period is to realize the dynamic allocation of the channel resources in the WLAN by the controller.

Based on the embodiment described in FIG. 4, in the implementation process of the solution, the solution can be further optimized and defined.

In a possible implementation manner, the number of APs in the AP device group is the same as the number of subchannels included in the group working channel of the AP device group, and the main channel of the working channels of any two APs in the AP device group different. On the premise of ensuring that the main channels of the working channels of all APs are staggered, the number of sub-channels included in the group working channel is the upper limit of the number of APs in the AP device group. Therefore, the AP device group in the implementation mode can accommodate the maximum number of APs that can operate independently. Specifically, each sub-channel included in the group working channel is correspondingly set as the main channel of the working channel of each AP in the AP device, so that the main channel of the working channel of each AP in the AP device is staggered, and the mutual operation can be performed independently. No interference, improve the utilization efficiency of the group working channel.

It can be seen from the foregoing that each AP depends on the main channel of each AP when working, that is, the working channel of each AP must include the main channel corresponding to each AP, due to the channel arrangement in step 402 and the channel updated in step 404 In the arrangement, the sub-channels of the group working channel can only be used by a certain AP in the first time period or the second time period. Therefore, in order to improve the resource utilization efficiency of the AP device group to the group working channel, you can set the AP device group The number of APs is the same as the number of sub-channels included in the group working channel of the AP device group, and the main channels of the working channels of any two APs in the AP device group are different. Therefore, each AP in the AP device group is important When data needs to be transmitted and processed in the WLAN, the controller can allocate the sub-channels in the group working channel to each AP correspondingly, so that each AP in the AP device group can use its own main channel, avoiding multiple APs with the same main channel from being A scenario where WLAN cannot be used for a certain period of time.

In addition, the number of APs in the AP device group and the group working channel of the AP device group can also be in other sizes. For example, if the number of APs in the AP device group is less than the group working channel of the AP device group, it can also be Stagger the main channels of each AP to avoid mutual influence; if the number of APs in the AP device group is greater than the group working channel of the AP device group, there must be at least two APs that have the same main channel. At this time, the channel arrangement and/ Or the updated channel arrangement only indicates that only one of the at least two APs with the same main channel can handle services in the WLAN.

In a possible implementation manner, after step 402, the controller may send the channel arrangement or the part of the channel arrangement corresponding to each AP to the corresponding AP in the AP device group, so that each AP in the AP device group can Use the channel resources corresponding to each AP to process services in the WLAN according to the channel arrangement in the first time period. Similarly, after step 404, the controller sends the updated channel arrangement or the part of the updated channel arrangement corresponding to each AP. To the corresponding AP in the AP device group, so that each AP in the AP device group can use the channel resource corresponding to each AP to process the service in the second time period according to the updated channel arrangement, so that each AP realizes the service through the dynamic allocation of channel resources Processing. In addition, as a preferred implementation manner, the controller can be implemented in multiple sending methods. For example, if the channel arrangement indicates that there are APs with available sub-channels in the first time period in the AP device group, at this time , The controller can send the entire channel arrangement or the content of the channel arrangement including the available sub-channels of the corresponding AP to the corresponding AP, so that the AP knows that the AP’s available channels in the first time period use WLAN; When the arrangement indicates that there is an AP in the AP device group that has no available sub-channels within the first time period, at this time, the controller can also send the channel arrangement to the AP, or not within the preset time period through a preset method. Send the channel arrangement to the AP, so that the AP knows that the AP cannot use the WLAN if there is no available channel in the first time period. Similarly, the controller can do the same for the updated channel arrangement corresponding to the second time period. Processing, in addition, the controller may also send only the changed part to the corresponding AP based on the channel arrangement corresponding to the first time period, which is not specifically limited here.

The above describes a WLAN communication method in this application from the perspective of a controller, and the following describes a WLAN communication method in this application from the perspective of an AP. Referring to FIG. 5, another embodiment of a WLAN communication method in the embodiment of the present application includes:

501. The AP receives a first instruction from the controller.

In this implementation, the AP receives the first indication from the controller, where the first indication is used to indicate the first channel arrangement, and the first channel arrangement is the sub-channel available to the AP in the first time period, and the AP’s working channel The bandwidth of is at least 40 MHz, and the first channel arrangement includes the main channel of the AP’s working channel, that is, the first channel arrangement includes the AP’s working channel, which is the AP’s working channel or In the working channel of the AP, since the AP relies on the main channel of the AP when working, the first channel arrangement also includes the main channel of the working channel of the AP.

Specifically, refer to the implementation process of the controller in the embodiment described in FIG. 4. Here, the controller can be connected to an AP device group. The AP device group includes at least two APs. The controller accesses according to the channel of the AP device group. After the channel arrangement is determined by the demand, the sub-channels available to any AP indicated in the channel arrangement can be sent to the corresponding AP as the first channel arrangement included in the first indication, so that the AP can obtain the available sub-channels in the first time period. Sub-channel.

502. The AP receives a second instruction from the controller.

In this embodiment, after step 501, the AP receives a second instruction from the controller. The second instruction is used to indicate a second channel arrangement, and the second channel arrangement is a sub-channel available to the AP in the second time period. The main channel of the AP's working channel is included in the second channel arrangement, and the sub-channels available to the AP in the first time period indicated by the second channel arrangement are also in the AP's working channel, that is, The second channel arrangement is different from the first channel arrangement, so the AP can determine the available sub-channels in the first time period and the second time period according to the instructions of the controller, so as to realize the dynamic allocation of channel resources by the controller.

Among them, the AP's working channel refers to the AP's access capability, that is, the maximum channel resource that the AP can use. Among the first and second instructions sent by the controller, the first instruction includes the AP's first time period. The second indication includes the sub-channels available to the AP in the second time period, and the second channel arrangement is different from the first channel arrangement, so the AP can determine the first time according to the controller’s instructions The sub-channels available in the second time period and the second time period realize the dynamic allocation of channel resources by the controller.

Specifically, the first time period and the second time period may be the same time period. For example, before the current time reaches the start time of the first time period, the AP receives the second indication, so that the second indication pair can be used. The first instruction is to update, that is, to update the sub-channels available in the first time period; in addition, the first time period and the second time period can also be different time periods, for example, at the current moment at the beginning of the first time period When the AP receives the second indication after the start time and the current time before the end time of the first time period, the AP uses the second indication to determine the available sub-channels in the second time period, the first time period and the second time period It can also be other relationships, which are not limited here.

As a preferred solution, the first time period and the second time period may be different sequential time periods in the cycle change process, for example, if the period is T (0.0001 second, 0.001 second, 0.02 second or other time period), Then the first time period may indicate the time period from time (n-1)T to time nT, and the second time period may indicate the time period from time nT to time (n+1)T. It should be noted that the working channel of the AP can be the working channel pre-allocated by the controller for the AP when the AP accesses the controller for the first time, or it can be further adjusted by the controller according to the acquired control strategy, which is implemented in this application In the example, for the purpose of realizing the dynamic adjustment of channel resources, in order to reduce the impact of the channel resource adjustment process on the STAs accessing the AP, the time interval between the first time period and the second time period can be a short time Interval (for example, 100ms, 200ms, or other time intervals), therefore, the working channel of each AP in the AP device group needs to remain unchanged within a short time interval, that is, between the first time period and the second time period The inside remains unchanged.

Based on the embodiment described in FIG. 5, further optimization can be made specifically in the implementation process of the solution.

In a possible implementation, if the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends WLAN signals in the first time period, the working channel of the AP is Unavailable sub-channels are punctured, that is, when the AP determines that its available sub-channels are lower than the working channel of the AP according to the first channel arrangement, the AP subsequently sends WLAN signals for service data processing in the first time period At this time, the unavailable sub-channels in the working channel of the AP are punctured, so that APs with different available sub-channels can transmit data in parallel in the first time period without interfering with each other. At the same time, using the channel puncturing mechanism can make discontinuous Bandwidth channels can also be channel bound to transmit data; similarly, if the second channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends WLAN signals in the second time period, Punching is performed on the unavailable sub-channels in the working channel of the AP, so that APs with different available sub-channels can transmit data in parallel in the second time period without interfering with each other.

In a possible implementation manner, if the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, the AP sends the first trigger frame to the station STA associated with the AP within the first time period. When the first trigger frame is set, a puncturing instruction for the STA is set, where the puncturing instruction is used to instruct the STA to perform puncturing on subchannels that are unavailable in the AP's working channel when sending uplink signals based on the first trigger frame , So that the AP does not interfere with other APs when processing the uplink signal sent by the STA associated with the AP in the first time period. Similarly, if the second channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends the second trigger frame to the STA associated with the AP in the second time period, the second trigger frame The puncturing indication for the STA is set in the STA, where the puncturing indication is used to instruct the STA to perform puncturing processing on subchannels that are not available in the AP’s working channel when the STA sends an uplink signal based on the second trigger frame, so that the AP is The STA associated with the AP does not interfere with other APs when sending uplink signals in the second time period.

In a possible implementation manner, the AP sends a buffer status report or a summary of the buffer status report of the STA associated with the AP to the controller. Among them, the buffer status report or the summary of the buffer status report of the STA associated with the AP can be used as one of the basis for the controller to determine the channel access requirement of the AP in step 401, so that the controller can realize the matching according to the channel access requirement. Dynamic allocation of channel resources.

An example will be given below through a specific implementation process of the WLAN communication method. Among them, take the AP device group including 4 APs (that is, AP1, AP2, AP3, AP4), and the group working channel is 80 MHz as an example for description. The group working channel of the AP device group is channel 155 (frequency range is 5735MHz-5815MHz). Channel 155 includes 4 sub-channels with a bandwidth of 20MHz: channel 149 (frequency range is 5735MHz-5755MHz), channel 153 (frequency range is 5755MHz-5775MHz), channel 157 (frequency range is 5775MHz-5795MHz), channel 161 (frequency range is 5775MHz-5795MHz) 5795MHz-5815MHz), and 2 sub-channels with a bandwidth of 40MHz: channel 151 (frequency range is 5735MHz-5775MHz), channel 159 (frequency range is 5775MHz-5815MHz).

It can be known from the foregoing that the controller can set the working channels of 4 APs in various ways, and the working channels of each AP can be the same as the group working channel or within the group working channel. That is, the working channel of each AP may be channel 149, channel 151, channel 153, channel 155, channel 157, channel 159, or channel 161, and the working channel of at least one AP is channel 155.

Here, it is taken as an example that the working channels of these 4 APs are the same as the group working channel, and the working channels of these 4 APs are all channel 155. Since each AP depends on the main channel of each AP when working, the main channels of the working channels of the preset 4 APs are all staggered. For details, please refer to Figure 6, the primary channels and secondary channels of AP1 to AP4. In the specific allocation of (secondary channel), the main channel of AP1 is channel 149 (the secondary channel is channel 153, channel 157, and channel 161), and the main channel of AP2 is channel 153 (the secondary channel is channel 149, channel 157, and channel 161) The main channel of AP3 is channel 157 (the auxiliary channel is channel 149, channel 153, and channel 161), and the main channel of AP4 is channel 161 (the auxiliary channel is channel 149, channel 153, and channel 157).

In the process of dynamic allocation of channel bandwidth resources by the specific controller, as mentioned above, there are many ways for the controller to obtain the channel access requirements of the AP device group. Here, the queue information reported by each AP to the controller is used as the channel of each AP. Take access requirements as an example. Specifically, the AP reports queue information to the controller, where the queue information includes uplink and downlink queue information, and the queue information may include queue message size, message delay, and other information. Among them, 4 APs send requests to the controller packet by packet or periodically. The controller calculates the AP packet sending priority according to the queue information of each AP in the AP device group, and allocates channel arrangements for them. The channel arrangement is based on each AP. The basic basis for the calculation of the queue information is: the greater the queue traffic, the greater the packet priority; the greater the queue delay, the greater the packet priority. Exemplarily, the basis for controlling the bandwidth of an AP may be: if the AP's packet sending priority is small, the access bandwidth is 20MHz; if the AP's packet sending priority is larger and other APs have no services, the access bandwidth is 80MHz; If the AP has a higher priority for sending packets, and other APs have a small amount of service or are in the process of sending, they can access the bandwidth of 20-60MHz.

Referring to Figure 7, in the three time periods, the controller arranges the AP as follows:

(1) If the controller determines, according to the queue information reported by each AP, that in the first time period, the STA1 associated with AP1 has a large amount of business, AP2 and AP4 have no business, and it finds that AP3 has a little business, it will get the channel arrangement. In this channel arrangement, the AP1 access bandwidth is configured to be 60 MHz, namely channel 149, channel 153, and channel 161 (or represented as channel 151, channel 161), and the AP3 access bandwidth is configured to be 20 MHz, namely channel 157.

(2) If the controller determines according to the queue information reported by each AP that in the second time period, AP1 and AP3 have finished sending and have no business, AP2 has a little business, and AP4 has a lot of business, in order to ensure data transmission, get updated Channel arrangement. In the updated channel arrangement, the AP2 bandwidth is configured to be 20MHz, that is, channel 153; the AP4 bandwidth is configured to be 60MHz, channel 149, channel 157, channel 161 (or represented as channel 149, channel 159).

(3) If the controller determines according to the queue information reported by each AP that in the third time period, AP1, AP2, AP3 have no business, and AP4 has a lot of business, in order to ensure data transmission, it will get the updated channel arrangement again, which should be updated again Configure AP4 bandwidth 80MHz in the channel arrangement, that is, channel 155.

Each time the channel arrangement is obtained, the controller sends the channel arrangement to the AP in the channel number, character, table or other data format. The controller can send the channel arrangement, the updated channel arrangement, the updated channel arrangement all or the part corresponding to each AP to each AP. For example, in the scene (1) corresponding to the first time period, the controller can arrange the entire channel arrangement Send to 4 APs. Since only AP1 and AP3 have available channels in the first time period, the controller can also send the channel arrangement or the part of the channel arrangement only to AP1, AP3, and not to AP2 , AP4, or the controller may also send an indication message to AP2 and/or AP4. The indication message indicates that AP2 and/or AP4 have no available channels in the first time period. The controller updates the channel arrangement and the channel arrangement again. A similar treatment can also be used in. In addition, the working channel of each AP in the first time period, the second time period, and the third time period is unchanged (all remain as channel 155) and the main channel of each AP is unchanged. Therefore, the controller sends this to the AP. In the process of channel arrangement, there is no need to send a channel switch announcement (CSA) to each AP.

Thereafter, each AP can use the corresponding channel bandwidth resource for WLAN data transmission in the corresponding time period according to the channel arrangement or the part of the channel arrangement sent by the controller, so as to realize the dynamic allocation of WLAN channel resources by the controller. A detailed description of the AP realization process:

For AP1, the available channels of AP1 in the first time period are channel 149, channel 153, and channel 161. Thereafter, the working channel of AP1 in the first time period is still channel 155. When AP1 performs data service transmission on the WLAN, channel 157 is punctured. AP1 has no available channels in the second and third time periods. After that, the working channel of AP1 in the second and third time periods is still the preset 80MHz channel, which is channel 155, but AP1 is in the second time period and the third time period. The channel is not used to send data during the time period and the third time period.

For AP2, AP2 has no available channels in the first time period and the third time period. After that, the working channel of AP2 in the first time period and the third time period is still channel 155, but AP2 is in the first time period And in the third time period, the channel is not used to send data. The channel available for AP2 in the second time period is channel 153. The working channel of AP2 in the second time period is still channel 155. When AP2 performs data service transmission on the WLAN, it can perform puncturing on channel 149, channel 157, and channel 161, and only send data on channel 153. At this time, since only the main channel is used to send data, the AP2 puncturing the channel 149, channel 157, and channel 161 is an optional step, which may or may not be executed.

For AP3, the channel available for AP3 in the first time period is channel 3. The working channel of AP3 in the first time period is still channel 155. When AP3 performs data service transmission on the WLAN, after puncturing channel 149, channel 153, and channel 161, it only sends data on channel 157. Similarly, performing puncturing on channel 149, channel 153, and channel 161 is an optional step here, which may or may not be executed. AP3 has no available channels in the second time period and the third time period. The working channel of AP3 in the second time period and the third time period is still channel 155, but AP3 does not use the channel to send data in the second time period and the third time period.

For AP4, AP4 has no available channel in the first time period. The working channel of AP4 in the first time period is still channel 155. However, AP4 does not use the channel to send data in the first time period. The channels available for AP4 in the second time period are channel 149, channel 157, and channel 161. The working channel of AP4 in the second time period is still channel 155. When AP4 performs data service transmission on the WLAN, channel 153 is punctured. The channel available for AP4 in the third time period is channel 155. AP4 can use the full working channel in the third time period.

In addition, if the above-mentioned AP determines that there is an unavailable sub-channel in a certain period of time in each working channel, when the AP sends a trigger frame to the STA associated with the AP in the corresponding period of time, the trigger frame is set in the trigger frame. The puncturing indication of the STA, which is used to instruct the STA to perform puncturing processing on subchannels that are not available in the AP's working channel when sending an uplink signal based on the trigger frame.

The WLAN communication method has been described above, and the controller and AP provided in the embodiments of the present application are described below with reference to the accompanying drawings.

Referring to FIG. 8, an embodiment of the present application provides a controller 800. The controller 800 may include an acquiring unit 801, an allocating unit 802, and a sending unit 803;

The acquiring unit 801 is configured to acquire the channel access requirements of the AP device group. The AP device group includes at least two APs. The working channel of the AP with the largest working channel bandwidth in the AP device group is the group working channel, and the bandwidth of the group working channel is at least For 40 MHz, the working channel of any AP in the AP device group is the same as or within the group working channel, and the main channels of the working channels of at least two APs in the AP device group are different;

The allocation unit 802 is configured to allocate the sub-channels in the group working channel to at least one AP in the AP device group according to the channel arrangement according to the channel access requirements, and the channel arrangement is used to indicate that the AP in the AP device group is available in the first time period The channel arrangement includes the allocation of available sub-channels for one or more APs. Any two APs in the channel arrangement are allocated different sub-channels. The sub-channels allocated to each AP in the channel arrangement include the corresponding AP The main channel of the working channel of the AP equipment group. The sub-channels allocated to each AP of the AP device group are in the working channel of the corresponding AP. If the channel arrangement includes the arrangement of more than one AP, the working channel of any two APs in the channel arrangement The main channel is different;

The obtaining unit 801 is also used to obtain the updated channel access requirement of the AP device group;

The allocation unit 802 is further configured to allocate the sub-channels in the group working channel to at least one AP in the AP device group according to the updated channel arrangement according to the updated channel access requirements, and the updated channel arrangement is used to indicate the second time period Channels available to APs in the inner AP device group, where the working channel of each AP in the AP device group remains unchanged during the first time period and the second time period.

In this embodiment, the allocation unit 802 allocates each sub-channel in the group working channel corresponding to the AP device group to the AP device group according to the channel arrangement according to the channel access requirements of the AP device group. After the obtaining unit 801 obtains the updated channel access requirements for the sub-channels available to the APs in the AP device group during the time period, the allocating unit 802 updates the sub-channels in the group working channel according to the updated channel access requirements. The channel arrangement of the AP device group is allocated to the AP device group, where the updated channel arrangement is used to indicate the channels available to the APs in the AP device group in the second time period, so that the channel resource corresponding to the AP device group by the controller is in the first The dynamic allocation of the time period and the second time period realizes the dynamic allocation of the channel resources in the WLAN by the controller.

In a possible implementation manner, the number of APs in the AP device group is the same as the number of subchannels included in the group working channel, and the main channels of the working channels of any two APs in the AP device group are different.

In a possible implementation manner, the controller further includes:

The sending unit 803 is configured to send the channel arrangement or the part corresponding to each AP in the channel arrangement to the corresponding AP in the AP device group;

The sending unit 803 may also be used to send the updated channel arrangement or the part of the updated channel arrangement corresponding to each AP to the corresponding AP in the AP device group.

It should be noted that the execution process of the WLAN communication method of the unit of the processor 800 and the like can be specifically referred to in the description of the method embodiment shown in the foregoing application, and will not be repeated here.

Referring to FIG. 9, an embodiment of the present application also provides an AP 900, and the AP includes a receiving unit 901 and a processing unit 902:

The receiving unit 901 is configured to receive a first indication from the controller, where the first indication is used to indicate a first channel arrangement, the first channel arrangement is the sub-channel available to the AP in the first time period, and the working channel of the AP The bandwidth is at least 40 MHz, the first channel arrangement includes the main channel of the AP's working channel, and the first channel is arranged in the AP's working channel;

The receiving unit 901 is further configured to receive a second indication from the controller, where the second indication is used to indicate a second channel arrangement, the second channel arrangement is the sub-channel available to the AP in the second time period, and the second channel arrangement Including the main channel of the AP’s working channel, and the second channel is arranged in the AP’s working channel. The second channel arrangement is different from the first channel arrangement. The AP’s working channel remains unchanged during the first time period and the second time period. .

In a possible implementation manner, AP900 further includes a processing unit 902;

If the first channel arrangement indicates that there are unavailable sub-channels in the AP's working channel, when the AP sends WLAN signals in the first time period, the processing unit 902 is configured to puncture the unavailable sub-channels in the AP's working channel;

If the second channel arrangement indicates that there are unavailable sub-channels in the AP's working channel, when the AP sends WLAN signals in the second time period, the processing unit 902 is further configured to puncture the unavailable sub-channels in the AP's working channel.

In a possible implementation manner, if the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends a trigger frame to the station STA associated with the AP in the first time period, the processing unit 902 also It is used to set a puncturing indication for the STA in the trigger frame, and the puncturing indication is used to instruct the STA to puncture the unavailable sub-channels in the working channel of the AP when sending an uplink signal based on the trigger frame.

In a possible implementation manner, AP900 also includes:

The sending unit 903 is configured to send a buffer status report or a summary of the buffer status report of the STA associated with the AP to the controller.

It should be noted that, for details such as the execution process of the WLAN communication method of the above-mentioned AP900 unit, please refer to the description in the method embodiment shown in the foregoing application, and will not be repeated here.

Please refer to FIG. 10, which is a schematic diagram of a possible logical structure of the controller 1000 involved in the above-mentioned embodiments provided by the embodiments of this application. The controller 1000 may include, but is not limited to, a memory 1001 and a processor 1002. In the embodiment of the application, the processor 1002 is configured to perform control processing on the actions of the controller 1000. Specifically, the controller 1000 may be used as a wireless controller in the WLAN, similar to the structure of FIG. 1 and FIG. 2, for realizing the dynamic allocation of channel resources in the WLAN.

The processor 1002 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

Please refer to FIG. 11, which is a schematic diagram of a possible logical structure of the AP1100 involved in the above-mentioned embodiments provided by the embodiments of this application. The AP1100 may include, but is not limited to, a memory 1101 and a processor 1102. Among them, the processor 1102 is used to control the actions of the AP1100. Specifically, the AP1100 can be used as an AP in a WLAN, similar to the structure described in FIG. 1 and FIG. 2. Exemplarily, on this basis, the AP1100 may also integrate other components, such as power supply 1103, interface 1104, modulator 1105, receiver 1106, transmitter 1107, antenna array 1108, etc. or other components, There is no limitation here.

In addition, the processor 1102 may be a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. Those skilled in the art can clearly understand that, for the convenience and conciseness of the description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

The embodiment of the present application also provides a WLAN architecture, and the network architecture includes the controller and the AP in the foregoing embodiment.

The embodiment of the present application also provides a computer-readable storage medium storing one or more computers. When the readable storage medium is executed by a processor, the processor executes the method implemented by the above-mentioned controller or AP.

The embodiment of the present application also provides a computer program product (or called a computer program) storing one or more computers. When the computer program product is executed by the processor, the processor executes the method implemented by the above-mentioned controller or AP.

The embodiment of the present application also provides a chip system, which includes a processor, which is used to support the controller to implement the functions involved in the above-mentioned controller or AP. In a possible design, the chip system may also include a memory, and the memory is used to store the necessary program instructions and data of the controller. The chip system can be composed of chips, or include chips and other discrete devices.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes. .

Claims (17)

A wireless local area network (WLAN) communication method, characterized in that the method includes: The controller obtains the channel access requirements of an access point (AP) device group. The AP device group includes at least two APs. The working channel of the AP with the largest working channel bandwidth in the AP device group is the group working channel. The bandwidth of the group of working channels is at least 40 MHz, the working channel of any AP in the AP device group is the same as or within the group of working channels, and at least two of the AP device groups are The main channel of the working channel of each AP is different; The controller assigns the sub-channels in the group working channel to at least one AP in the AP device group according to the channel arrangement according to the channel access requirement, and the channel arrangement is used to indicate the The sub-channels available to the APs in the AP device group include the allocation of available sub-channels to one or more APs, and the sub-channels allocated to any two APs in the channel arrangement are different, the The sub-channels allocated to each AP in the channel arrangement include the main channel of the working channel of the corresponding AP. The sub-channels allocated to each AP of the AP device group are in the working channel of the corresponding AP. In an AP arrangement, the main channels of the working channels of any two APs in the channel arrangement are different; Acquiring, by the controller, the updated channel access requirement of the AP device group; The controller allocates the sub-channels in the group working channel to at least one AP in the AP device group according to the updated channel arrangement according to the updated channel access requirement, and the updated channel arrangement is used to indicate Channels available to APs in the AP device group in the second time period, where the working channels of each AP in the AP device group remain unchanged during the first time period and the second time period. The method according to claim 1, wherein the number of APs in the AP device group is the same as the number of subchannels included in the group working channel, and the working of any two APs in the AP device group The main channel of the channel is different. The method according to claim 1 or 2, wherein the method further comprises: The controller sends the channel arrangement or the part of the channel arrangement corresponding to each AP to the corresponding AP in the AP device group. A wireless local area network (WLAN) communication method, characterized in that the method includes: The access point (AP) receives a first indication from the controller, where the first indication is used to indicate a first channel arrangement, and the first channel arrangement is a sub-channel available to the AP in the first time period , The bandwidth of the working channel of the AP is at least 40 MHz, the first channel arrangement includes the main channel of the working channel of the AP, and the first channel is arranged in the working channel of the AP; The AP receives a second indication from the controller, where the second indication is used to indicate a second channel arrangement, and the second channel arrangement is a sub-channel available to the AP in a second time period, The second channel arrangement includes the main channel of the working channel of the AP, and the second channel is arranged within the working channel of the AP, and the second channel arrangement is different from the first channel arrangement. The working channel of the AP remains unchanged during the first time period and the second time period. The method according to claim 4, wherein the method further comprises: If the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends a WLAN signal in the first time period, the AP is not available for the unavailable sub-channels in the working channel of the AP. Channel piercing; If the second channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends a WLAN signal in the second time period, the unavailable sub-channels in the working channel of the AP are The channel is pierced. The method according to claim 4 or 5, wherein the method further comprises: If the first channel arrangement indicates that there are unavailable subchannels in the working channel of the AP, when the AP sends the first trigger frame to the station STA associated with the AP within the first time period, A puncturing indication for the STA is set in the first trigger frame, and the puncturing indication is used to instruct the STA to send an uplink signal based on the first trigger frame to unavailable subchannels in the working channel of the AP Do piercing If the second channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends a second trigger frame to the STA associated with the AP within the second time period, the A puncturing instruction for the STA is set in the second trigger frame, and the puncturing instruction is used to instruct the STA to perform actions on subchannels that are not available in the AP's working channel when sending uplink signals based on the second trigger frame. perforation. The method according to claim 4 or 5, wherein the method further comprises: The AP sends a buffer status report of the STA associated with the AP or a summary of the buffer status report to the controller. A controller, characterized in that the controller includes: The acquiring unit is configured to acquire the channel access requirements of an access point (AP) device group, the AP device group includes at least two APs, and the working channel of the AP with the largest working channel bandwidth in the AP device group is the group working Channel, the bandwidth of the group working channel is at least 40 MHz, the working channel of any AP in the AP device group is the same as or within the group working channel, the AP device group The main channels of at least two AP working channels are different; The allocation unit is configured to allocate the sub-channels in the group working channel to at least one AP in the AP device group according to the channel arrangement according to the channel access requirement, and the channel arrangement is used to indicate that in the first time period The sub-channels available to the APs in the AP device group include the allocation of available sub-channels to one or more APs in the channel arrangement, and the sub-channels allocated to any two APs in the channel arrangement are different, so The sub-channels allocated to each AP in the channel arrangement include the main channel of the working channel of the corresponding AP, and the sub-channels allocated to each AP in the AP device group are in the working channel of the corresponding AP. For arrangements with more than one AP, the main channels of the working channels of any two APs in the channel arrangement are different; The acquiring unit is further configured to acquire the updated channel access requirement of the AP device group; The allocation unit is further configured to allocate the sub-channels in the group working channel to at least one AP in the AP device group according to the updated channel arrangement according to the updated channel access requirements, and the updated channel It is arranged to indicate the channels available to the APs in the AP device group in the second time period, wherein the working channel of each AP in the AP device group is maintained in the first time period and the second time period constant. The controller according to claim 8, wherein the number of APs in the AP device group is the same as the number of subchannels included in the group working channel, and the number of any two APs in the AP device group is The main channel of the working channel is different. The controller according to claim 8 or 9, wherein the controller further comprises: The sending unit is configured to send the channel arrangement or the part of the channel arrangement corresponding to each AP to the corresponding AP in the AP device group. An access point (AP), characterized in that the AP includes: A receiving unit, configured to receive a first indication from the controller, where the first indication is used to indicate a first channel arrangement, and the first channel arrangement is a sub-channel available to the AP in a first time period, The bandwidth of the working channel of the AP is at least 40 MHz, the first channel arrangement includes the main channel of the working channel of the AP, and the first channel is arranged in the working channel of the AP; The receiving unit is further configured to receive a second indication from the controller, where the second indication is used to indicate a second channel arrangement, and the second channel arrangement means that the AP is in a second time period Available sub-channels, the second channel arrangement includes the main channel of the AP's working channel, and the second channel is arranged in the AP's working channel, and the second channel arrangement is the same as the first channel The arrangement is different, and the working channel of the AP remains unchanged during the first time period and the second time period. The AP according to claim 11, wherein the AP further comprises a processing unit; If the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends a wireless local area network (WLAN) signal in the first time period, the processing unit is configured to The unavailable sub-channels in the working channel of the AP are punctured; If the second channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, when the AP sends a WLAN signal in the second time period, the processing unit is further configured to The unavailable sub-channels in the working channel are punctured. The AP according to claim 11 or 12, wherein if the first channel arrangement indicates that there are unavailable sub-channels in the working channel of the AP, the AP communicates with all the sub-channels within the first time period. When the station STA associated with the AP sends a trigger frame, the processing unit is further configured to set a puncturing instruction for the STA in the trigger frame, and the puncturing instruction is used to instruct the STA to send a trigger frame based on the trigger frame. When the uplink signal is used, the unavailable sub-channels in the working channel of the AP are punctured. The AP according to claim 11 or 12, wherein the AP further comprises: The sending unit is configured to send a buffer status report of the STA associated with the AP or a summary of the buffer status report to the controller. A controller, characterized in that it comprises: Processor, memory; The memory is used to store programs; The processor is configured to execute the program to implement the method according to any one of claims 1 to 3. An access point (AP), which is characterized in that it includes: Processor, memory; The memory is used to store programs; The processor is configured to execute the program to implement the method according to any one of claims 4 to 7. A computer program product, characterized in that, when the computer program product runs on a computer, the computer is caused to execute the method according to any one of claims 1 to 3, or the computer is caused to execute The method of any one of claims 4 to 7.

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