CN113141660B

CN113141660B - Channel allocation method, controller and access point

Info

Publication number: CN113141660B
Application number: CN202010065736.2A
Authority: CN
Inventors: 李苗; 曾焱; 胡明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2023-02-10
Anticipated expiration: 2040-01-20
Also published as: WO2021147355A1; CN113141660A

Abstract

The present application relates to the field of communications technologies, and in particular, to a channel allocation method, a controller, and an access point. The method comprises the following steps: receiving first service characteristic information from a first access point, wherein the first service characteristic information is service characteristic information of the first access point on a first frequency band; receiving second service characteristic information from a second access point, wherein the second service characteristic information is service characteristic information of the second access point on the first frequency band; determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the first service characteristic information and the second service characteristic information; when the first access point is located before the second access point in the channel selection sequence, sending first indication information to the first access point to trigger the first access point to determine a first working channel from a plurality of channels on the first frequency band.

Description

Channel allocation method, controller and access point

Technical Field

The present application relates to the field of communications technologies, and in particular, to a channel allocation method, a controller, and an access point.

Background

A Wireless-Fidelity (Wi-Fi) network is a widely used Wireless Local Area Network (WLAN), and is generally applied to indoor places. With the development and popularization of smart homes, home devices such as Set Top Boxes (STBs), air conditioners, audio equipment and mobile devices such as mobile phones and tablet computers all need to access to a Wi-Fi network, and the demand of users for indoor Wi-Fi network coverage is higher and higher. Referring to fig. 1, a plurality of Access Points (APs), that is, a multi-AP networking is usually deployed in indoor scenes such as a large flat layer, a villa, an office, a hospital, and a school, so as to implement seamless coverage of Wi-Fi signals. Generally, wi-Fi signals among multiple APs will affect each other, and co-frequency or adjacent-frequency interference often causes problems of low rate, high delay and the like, and seriously affects the working performance of the whole Wi-Fi network. In order to reduce the mutual interference among multiple APs, it is necessary to allocate a suitable working channel to each AP in the multi-AP networking, so that the working channels of adjacent APs are not overlapped as much as possible, thereby reducing the co-frequency or adjacent-frequency interference.

Since Wi-Fi channels are regulated by national laws (see in particular the list of Wi-Fi channels in wireless local area network IEEE 802.11), the spectrum resources available for indoor Wi-Fi are very limited. Wi-Fi channels are primarily in the 2.4GHz or 5GHz bands. For example, the 2.4GHz channel division is shown in fig. 2, which has 13 channels, but only 3 non-interfering channels (e.g., channel 1, channel 6, and channel 11).

The 5G frequency band is often limited in Wi-Fi channels available indoors due to the avoidance of radar channels. For example, taking the regulation of channels in china as an example, fig. 3 can be participated in, wherein the channels indicated by "radar" are specified as radar channels.

In addition, in the actual multi-AP networking channel selection, the working channels of APs under other controllers (which may be referred to as neighbor APs of the AP under the current controller) are often uncontrollable, so that the channel environment of multi-AP networking becomes more complicated.

Therefore, it is very important to guarantee and improve the performance of the multi-AP networking network by reasonably performing channel allocation, and the method is a key technical problem in the multi-AP networking.

Disclosure of Invention

The embodiment of the application provides a channel allocation method, a controller and an access point, which can reasonably allocate a forward channel of the access point, improve the overall throughput of a network system and reduce time delay.

In a first aspect, an embodiment of the present application provides a channel allocation method, where the method is applied to a controller, and the controller is at least configured to control a first access point and a second access point; the method comprises the following steps: receiving first service characteristic information from a first access point, wherein the first service characteristic information is service characteristic information of the first access point on a first frequency band; receiving second service characteristic information from a second access point, wherein the second service characteristic information is service characteristic information of the second access point on a first frequency band; determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the first service characteristic information and the second service characteristic information; and when the first access point is positioned before the second access point in the channel selection sequence, sending first indication information to the first access point to trigger the first access point to determine a first working channel from a plurality of channels on the first frequency band.

That is to say, in the embodiment of the present application, the controller may determine the channel selection sequence of the multiple access points according to the service feature information of the multiple access points, and instruct the access points to perform channel selection according to the determined channel selection sequence, thereby implementing channel allocation according to the service requirements of the access points.

In a possible implementation manner, the first service characteristic information includes a service type of a service executed by a first class station connected to the first access point, the second service characteristic information includes a service type of a service executed by a second class station connected to the second access point, and the first class station and the second class station are stations operating in a first frequency band; determining a channel selection sequence of the first access point and the second access point according to the first service characteristic information and the second service characteristic information comprises: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the service type of the service executed by the first type station and the service type of the service executed by the second type station.

That is, in this implementation manner, the channel selection order of the access points may be determined according to the service types of the services executed by the stations connected to the access points, so that the access points corresponding to the stations executing the services (e.g., VR services, voice services, etc.) with higher requirements on channel quality can preferentially select channels, so that channels with better quality can be selected.

In a possible implementation manner, the service type of the service executed by the first class site is at least one of multiple preset service types, the service type of the service executed by the second class site is one or more of the multiple service types, and different service types in the multiple service types correspond to different priorities; determining a channel selection sequence of the first access point and the second access point according to the first service characteristic information and the second service characteristic information comprises: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the priority of the service type of the service executed by the first type of station and the priority of the service type of the service executed by the second type of station.

That is, in this implementation, different traffic types may be set to have different priorities, and when determining the channel selection order according to the traffic characteristic information of the access point, the channel selection sequence can be determined according to the priority of the service type corresponding to the access point, so that the access point corresponding to the service type with high priority can preferentially select the channel, and the channel with better quality can be selected.

In one possible implementation, the plurality of service types includes at least one of:

virtual reality service type, voice service type, video service type, best effort service type, background service type.

That is to say, in this implementation manner, when a station executes one or more of a virtual reality service, a voice service, a video service, a best effort service, and a background service, the controller may determine, according to the service executed by the station, a channel selection order of an access point corresponding to the station, so that the channel allocation method provided in this embodiment of the present application may be applied to various scenarios.

In a possible implementation manner, the first service characteristic information further includes an execution frequency of a service executed by the first class site, and the second service characteristic information further includes an execution frequency of a service executed by the second class site; determining a channel selection sequence of the first access point and the second access point according to the first service characteristic information and the second service characteristic information comprises: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the execution frequency and the service type of the service executed by the first type station and the execution frequency and the service type of the service executed by the second type station.

That is to say, in this implementation manner, the service type and the execution times per unit time of the service executed by the station connected to the access point may be considered comprehensively to determine the channel selection order of the access point, so that the requirement on the delay is high, and the access point in the load may preferentially perform channel selection, thereby further improving the rationality of channel allocation and improving the user network experience.

In one possible implementation manner, the first indication information is used for triggering the first access point to evaluate a plurality of channels on the first frequency band, so that the first access point can first work on a channel from the plurality of channels; the plurality of channels comprise a first channel to be evaluated, the first indication information comprises an identifier of the second access point, and the identifier of the second access point is used for deducting the interference of the second access point to the first channel to be evaluated when the first access point evaluates the first channel to be evaluated.

That is to say, in this implementation, when the access point performs channel estimation, the interference of other access points following the access point in the channel selection order to the current channel of the other access point may be deducted, so that when the current channel of the other access point is estimated, the influence of the other access points on the channel where the other access points are located is not considered, and thus a channel with better channel quality may be better selected.

In a possible implementation manner, the channel allocation method provided in the embodiment of the present application further includes: when or after receiving the channel switching information from the first access point, sending second indication information to the second access point to trigger the second access point to determine a second working channel from the plurality of channels; the channel switching information is information sent by the first access point when or after the first operating channel is determined.

That is, in this implementation, after the access point with the prior channel selection order selects a good channel, the access point with the subsequent channel selection order is instructed to perform channel selection, so that the access points can sequentially select channels.

In a possible implementation manner, the first frequency band is any one of the following:

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

That is to say, in this implementation manner, the controller may determine a channel selection sequence of the access point operating in any one of the 2.4GHz band, the 5GHz high band, and the 5GHz low band, so that the channel allocation method provided by the embodiment of the present application has a wider application range.

In a second aspect, an embodiment of the present application provides a channel allocation method, where the method is applied to a first access point; the method comprises the following steps: receiving first indication information from the controller, wherein the first indication information comprises an identifier of the second access point; the second access point is an access point positioned behind the first access point in the channel selection sequence corresponding to the first frequency band; responsive to the first indication information, commenting the plurality of channels on the first frequency band to obtain an evaluation result; determining a first working channel from the plurality of channels according to the evaluation result; wherein the plurality of channels includes a first channel to be evaluated; evaluating a plurality of channels over a first frequency band includes: and when the first channel to be evaluated is evaluated, the interference of the second access point to the first channel to be evaluated is deducted.

That is to say, when the access point performs channel estimation, the interference of other access points behind the access point in the channel selection order to the current channel of the other access point can be deducted, so that when the current channel of the other access point is estimated, the influence of the other access points on the channel where the other access points are located is not considered, and thus a channel with better channel quality can be selected.

In a possible implementation manner, the channel allocation method provided in the embodiment of the present application further includes: the first access point sends first service characteristic information to the controller so that the controller determines the position of the first access point in the channel selection sequence according to the first service characteristic information; the first service characteristic information is service characteristic information of the first access point on a first frequency band.

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

In a third aspect, an embodiment of the present application provides a channel allocation controller, configured to control at least a first access point and a second access point; the controller includes: a transceiver and a processor; the transceiver is used for receiving first service characteristic information from the first access point, wherein the first service characteristic information is service characteristic information of the first access point on a first frequency band; the transceiver is further configured to receive second service characteristic information from the second access point, where the second service characteristic information is service characteristic information of the second access point on the first frequency band; the processor is used for determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the first service characteristic information and the second service characteristic information; the transceiver is further configured to send first indication information to the first access point to trigger the first access point to determine the first operating channel from the plurality of channels on the first frequency band when the first access point is located before the second access point in the channel selection order.

In a possible implementation manner, the first service characteristic information includes a service type of a service executed by a first class station connected to the first access point, the second service characteristic information includes a service type of a service executed by a second class station connected to the second access point, and the first class station and the second class station are stations operating in a first frequency band; the processor is further configured to determine a channel selection order of the first access point and the second access point on the first frequency band according to the service type of the service executed by the first class site and the service type of the service executed by the second class site.

In a possible implementation manner, the service type of the service executed by the first class site is at least one of multiple preset service types, the service type of the service executed by the second class site is one or more of the multiple service types, and different service types in the multiple service types correspond to different priorities; the processor is further configured to: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the priority of the service type of the service executed by the first type of site and the priority of the service type of the service executed by the second type of site.

In a possible implementation manner, the first service characteristic information further includes an execution frequency of a service executed by the first class site, and the second service characteristic information further includes an execution frequency of a service executed by the second class site; the processor is further configured to: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the execution frequency and the service type of the service executed by the first type station and the execution frequency and the service type of the service executed by the second type station.

In one possible implementation, the transceiver is further configured to: when or after receiving the channel switching information from the first access point, sending second indication information to the second access point to trigger the second access point to determine a second working channel from the plurality of channels on the first frequency band; the channel switching information is information sent by the first access point when or after the first operating channel is determined.

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

It can be understood that the controller provided in the third aspect is configured to execute the corresponding method provided in the first aspect, and therefore, the beneficial effects achieved by the controller can refer to the beneficial effects in the corresponding method provided in the first aspect, and are not described herein again.

In a fourth aspect, an embodiment of the present application provides a first access point, where the first access point includes: a transceiver and a processor; the processor is configured to receive first indication information from the controller, where the first indication information includes an identifier of the second access point; the second access point is an access point positioned behind the first access point in the channel selection sequence corresponding to the first frequency band; the processor is used for responding to the first indication information and evaluating a plurality of channels on the first frequency band to obtain an evaluation result; the processor is used for determining a first working channel from the plurality of channels according to the evaluation result; wherein the plurality of channels comprises a first channel to be evaluated; the processor is further configured to deduct interference of the second access point with the first channel to be evaluated when the first channel to be evaluated is evaluated.

In a possible implementation manner, the transceiver is further configured to send first traffic characteristic information to the controller, so that the controller determines a position of the first access point in the channel selection order according to the first traffic characteristic information; the first service characteristic information is service characteristic information of the first access point on the first frequency band.

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

It can be understood that the access point provided by the fourth aspect is configured to execute the corresponding method provided by the second aspect, and therefore, the beneficial effects that can be achieved by the access point may refer to the beneficial effects in the corresponding method provided by the first aspect, which are not described herein again.

In a fifth aspect, an embodiment of the present application provides a chip system, where the chip system includes: a processor for executing instructions to cause a controller in which the system-on-chip is installed to perform the method provided by the first aspect.

It can be understood that the chip system provided in the fifth aspect is used for executing the method provided in the first aspect, and therefore, the beneficial effects achieved by the chip system can refer to the beneficial effects in the method provided in the first aspect, and are not described herein again.

In a sixth aspect, an embodiment of the present application provides a chip system, where the chip system includes: a processor for executing instructions to cause an access point in which the system-on-chip is installed to perform the method provided by the second aspect.

It can be understood that the chip system provided by the fifth aspect is used for executing the method provided by the second aspect, and therefore, the beneficial effects achieved by the chip system can refer to the beneficial effects in the method provided by the second aspect, and are not described herein again.

In a seventh aspect, an embodiment of the present application provides an integrated circuit, including: a memory to store instructions; and a processor coupled to the memory for executing the instructions to implement the method provided by the first aspect.

It is to be understood that the integrated circuit provided in the fourth aspect is configured to perform the method provided in the first aspect, and therefore, the beneficial effects achieved by the integrated circuit can refer to the beneficial effects in the method provided in the first aspect, and are not described herein again.

In an eighth aspect, an embodiment of the present application provides an integrated circuit, including: a memory to store instructions; and a processor coupled to the memory for executing the instructions to implement the method provided by the second aspect.

It is understood that the integrated circuit provided in the fourth aspect is used for executing the method provided in the second aspect, and therefore, the beneficial effects achieved by the integrated circuit can refer to the beneficial effects in the method provided in the second aspect, and are not described herein again.

In a ninth aspect, an embodiment of the present application provides a communication system, including the controller provided in the first aspect and the access point provided in the second aspect.

It is to be understood that the communication system provided by the ninth aspect is configured to perform the methods provided by the first aspect and the second aspect, and therefore, the beneficial effects achieved by the communication system can refer to the beneficial effects in the methods provided by the first aspect and the second aspect, which are not described herein again.

In a tenth aspect, embodiments of the present application provide a computer storage medium, which includes computer instructions that, when executed on a controller, cause the controller to perform the method of the first aspect.

It is understood that the computer storage medium provided by the tenth aspect is used for executing the method provided by the first aspect, and therefore, the beneficial effects achieved by the computer storage medium can refer to the beneficial effects in the method provided by the first aspect, and are not described herein again.

In an eleventh aspect, embodiments of the present application provide a computer storage medium including computer instructions, which, when run on an access point, cause the access point to perform the method provided in the first aspect.

It is understood that the computer storage medium provided by the eleventh aspect is used for executing the method provided by the second aspect, and therefore, the beneficial effects achieved by the computer storage medium can refer to the beneficial effects in the method provided by the second aspect, and are not described herein again.

In a twelfth aspect, an embodiment of the present application provides a computer program product, where the computer program product includes program code, when executed by a processor in a controller, implementing the method provided in the first aspect.

It is understood that the computer program product provided by the twelfth aspect is used for executing the method provided by the first aspect, and therefore, the beneficial effects achieved by the computer program product can refer to the beneficial effects in the method provided by the first aspect, and are not described herein again.

In a thirteenth aspect, the present application provides a computer program product, which contains program codes, when executed by a processor in an access point, implements the method provided in the second aspect.

It is understood that the computer program product provided by the twelfth aspect is used for executing the method provided by the second aspect, and therefore, the beneficial effects achieved by the computer program product can refer to the beneficial effects in the method provided by the second aspect, and are not described herein again.

According to the channel allocation method provided by the embodiment of the application, the channel selection sequence of the multiple access points can be determined according to the service characteristic information of the multiple access points, and the access points are indicated to perform channel selection according to the determined channel selection sequence, so that channel allocation can be performed according to the service requirements of the access points, the overall throughput of a network system is improved, the time delay is reduced, and the overall network experience of a user is improved.

Drawings

FIG. 1 is a schematic diagram of a multi-access point networking;

FIG. 2 is a schematic diagram of channel division in the 2.4GHz band;

FIG. 3 is a schematic diagram of channel division in a 5GHz band;

fig. 4 is a schematic diagram of a Wi-Fi network system according to an embodiment of the present application;

fig. 5 is a flowchart of a channel allocation method according to an embodiment of the present application;

fig. 6 is a schematic diagram of a Wi-Fi network system according to an embodiment of the present application;

fig. 7 is a schematic diagram of a Wi-Fi network system according to an embodiment of the present application;

fig. 8 is a flowchart of a channel allocation method according to an embodiment of the present application;

fig. 9 is a flowchart of a channel allocation method according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a controller according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an access point according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the specification. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise.

Wherein in the description of the present specification, "/" indicates a meaning, for example, a/B may indicate a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present specification, "a plurality" means two or more.

In the description of the present specification, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

In this specification, multiple access points for indoor deployment are often managed by the same controller. Typically, the controller may be a gateway configured with a Wi-Fi module, which may also be referred to as a master AP. The gateway has the functions of collecting information, processing information, issuing commands and the like, and can play the role of a central controller. A Wi-Fi network formed by a controller and one or more access points controlled by the controller (namely the access points connected with the controller) is a Wi-Fi network. The access points of two adjacent Wi-Fi networks may be neighbor access points to each other, in other words, an access point of one Wi-Fi network may be referred to as a neighbor access point of an access point of a Wi-Fi network adjacent to the network.

In the channel allocation scheme A1, each time an access point is powered on, the access point evaluates the channel perceived by the access point, and selects a channel with the least interference as a working channel according to the evaluation result. Specifically, access point B1, access points B2, … …, access point Bn, and the like can be set. According to the channel allocation scheme A1, the channel allocation process of the n access points is as follows:

(1) The access point B1 is electrified, the access point B1 evaluates the perceived channel, and selects the channel with the minimum interference as the optimal working channel according to the evaluation result; when the access point B1 carries out channel assessment, other access points in the same Wi-Fi network with the access point B1 are not powered on, so that a channel sensed by the access point B1 is not interfered by the other access points;

(2) The access point B2 is powered on, the access point B2 evaluates the channel perceived by the access point B2 (the channel perceived by the access point B2 is interfered by the working access point B1), and selects the channel with the minimum interference as the optimal working channel according to the evaluation result;

(3) And analogizing in turn until the access point Bn is powered on, evaluating the channel sensed by the access point Bn (the channel sensed by the access point Bn is interfered by the working N-1 access points) by the access point Bn, and selecting the channel with the minimum interference as the optimal working channel according to the evaluation result;

(4) Each access point may periodically detect its respective operating channel. When the channel quality of any access point is degraded, the access point can re-evaluate the perceived channel, and select the channel with the minimum interference as the optimal working channel according to the new evaluation result.

In the channel allocation scheme A1, each access point performs channel selection according to a fixed power-on sequence, and it can be understood that the channel which performs channel selection first is less restricted, and an optimal channel can be selected in an environment with relatively less interference (other access points are not powered on and do not generate interference on the channel), and the performance of the selected channel is better; the AP performing channel selection is subject to large constraints, and has more interference during channel estimation (the powered-up access point may generate interference on the channel), and the performance of the selected channel is also poor. Thus, for a Wi-Fi network comprising a plurality of access points, the order of channel selection for the plurality of access points determines the network performance distribution of the Wi-Fi network. Although the access point may be triggered to perform channel estimation again and select a channel when the channel quality of the access point deteriorates, it is difficult to select a good channel because the estimated channel is interfered by the access point in the Wi-Fi network. In other words, in the channel allocation scheme A1, there is no specific sequence when multiple access points perform channel selection, and an access point performing channel selection first may occupy a larger advantage and may select a better channel, so that channel allocation of a Wi-Fi network in a multi-access-point networking is random, and an access point with a larger load capacity and a higher service priority may not be able to select a good channel in time, thereby affecting service usage and reducing user experience.

In the channel allocation scheme A2, the access point to be configured reports its self-configuration request, position coordinates, and scanned ambient spectrum usage information to the server, and the server analyzes the position of the access point and the ambient spectrum usage information according to the self-configuration request of the access point to be configured, and allocates a channel to the access point to be configured in combination with the usage of the access point channel of the neighboring cell. The channel allocation scheme A2 is mainly applied to a multi-access-point network, the number of access points is large, the requirement on the computing capacity of a server is high for obtaining a globally optimal channel allocation result, and the cost is high; moreover, when reporting the spectrum use information of the surrounding environment to the server, the access point to be configured does not consider that the surrounding access points also change the spectrum channel, so that the environment information is not accurate enough in real time; in addition, when the server allocates channels, the influence of the sequence of channel allocation by multiple access points on the whole network channel pattern is not considered, the access points which allocate channels first select more, and the access points which allocate channels later select less, and the situation that channel allocation is not adapted to service requirements still exists.

The embodiment of the application provides a channel allocation method, which can determine a channel selection sequence of a plurality of access points according to service characteristic information of the plurality of access points, then sequentially instruct the access points to perform channel estimation according to the channel selection sequence, and determine a working channel according to a channel estimation result. Therefore, channel reallocation can be achieved globally according to the service requirements of the access points, the access points with high service priority and heavy load can preferentially select channels, channel allocation on demand is achieved, and overall network experience of users is improved.

Fig. 4 illustrates a Wi-Fi network system that may include a controller and a plurality of access points controlled by the controller, which may include access point C1, access point C2, access point C3, and so on. Multiple stations may be connected under each access point. For example, the access point C1 may connect a plurality of stations such as the station D11, the station D12, and the station D13. Access point C2 may connect to station D21, station D22, etc. The access point C3 can connect to the stations D31 and D32.

The access point may also be referred to as a wireless access point or a hotspot, and is an access point through which the terminal enters a wired network, and is mainly deployed in environments such as a home, a building, a garden, and outdoors, and typically covers a radius of several tens of meters to hundreds of meters. The access point can be a terminal device or a network device with a Wi-Fi chip. Illustratively, an access point may be a communication device that supports one or more of 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a, among others.

Illustratively, as shown in fig. 4, the access point C1 may be integrated into the controller. In particular, the controller may be configured with an access point functionality module having access point functionality, which may be referred to as access point C1, and an access point control module. For convenience of description, the controller referred to hereinafter may refer to an access point control module.

The channel between the access point and the controller, and between the access point and the access point, may be referred to as a backhaul channel. In the Wi-Fi network system shown in fig. 4, the backhaul channel may be a wired channel. In other words, the access point and the controller, and the access point may be connected by a wired connection, for example, an ethernet cable, an optical fiber, or a power line. Illustratively, the backhaul between the access point C1 and the controller may be via a communication bus.

The channel between the access point and the station may be referred to as a fronthaul (fronthaul) channel, which is a wireless channel, occupies Wi-Fi spectrum resources, and needs to perform global channel allocation in the Wi-Fi network. The channel allocation method provided by the embodiment of the application is an allocation method of a forwarding channel.

It should be noted that, in a Wi-Fi network system in which the backhaul channel is a wired channel, the access point may be configured with one or more wireless rf chips.

Illustratively, the access point may be configured with a 2.4GHz wireless radio frequency chip, and the access point may operate on a 2.4GHz frequency band, that is, the forward channel of the access point is a channel on the 2.4GHz frequency band. The access point can be configured with a 5GHz wireless radio frequency chip, and the access point can work on a 5GHz frequency band, that is, a forward transmission channel of the access point is a channel on 5 GHz.

Illustratively, the access point may be a dual-frequency access point, e.g., a dual-frequency access point may be configured with a 2.4GHz wireless radio chip and a 5GHz wireless radio chip. The 2.4GHz wireless radio frequency chip and the 5GHz wireless radio frequency chip are generally independent. The dual-frequency access point can work on the 2.4GHz frequency band and the 5GHz frequency band simultaneously, namely, the two forwarding channels of the dual-frequency access point can be two, namely, the two forwarding channels are the channel on the 2.4GHz frequency band and the channel on the 5GHz frequency band respectively. The dual-band access point can only operate on the 2.4GHz band or the 5GHz band.

Illustratively, the access point may be a triple-band access point, for example, a triple-band access point may be configured with a 2.4GHz radio chip, a 5GHz high band (HighBand) radio chip, and a 5GHz low band (Lowband) radio chip. The 2.4GHz wireless radio frequency chip, the 5GHz high-frequency band wireless radio frequency chip and the 5GHz low-frequency band wireless radio frequency chip are generally independent. The tri-band access point can work on a 2.4GHz frequency band, a 5GHz high frequency band and a 5GHz low frequency band simultaneously. The tri-band access point can also work on any one or two of a 2.4GHz band, a 5GHz high band and a 5GHz low band at the same time. The 5GHz high band includes channels 149-165 on the 5GHz band. The 5GHz low band includes channels 36-64 on the 5GHz band.

The channel allocation method provided by the embodiment of the application can be used for controlling the same controller and performing forwarding channel allocation on a plurality of access points working on the same frequency band. Illustratively, the channel allocation method can be used for forward channel allocation of a plurality of access points operating on a 2.4GHz frequency band. In an exemplary manner, the first and second electrodes are, the channel allocation method can be used for allocating the forward channel to a plurality of access points working on a 5GHz frequency band. Illustratively, the channel allocation method can be used for forward channel allocation of a plurality of access points operating on a 5GHz high frequency band. Illustratively, the channel allocation method can be used for forward channel allocation of a plurality of access points operating on a 5GHz low frequency band.

As shown in fig. 4, the access point C1 may connect a plurality of stations, such as a station D11, a station D12, and a station D13. Access point C2 may connect to station D21, station D22, etc. The access point C3 can connect to the stations D31 and D32.

A Station (STA) may also be called a Non-access point (Non-AP) STA, and may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example: the mobile phone with the Wi-Fi function, the tablet personal computer with the Wi-Fi function, the set top box with the Wi-Fi function, the smart television with the Wi-Fi function, the smart wearable device with the Wi-Fi function, the vehicle-mounted communication device with the Wi-Fi function, the Personal Computer (PC) with the Wi-Fi function, the air conditioner with the Wi-Fi function, the sound box with the Wi-Fi function and the like. Illustratively, a station may support one or more of 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a, etc.

The station can communicate with the access point through the forward channel determined by the access point. When there are two or more forward channels of the access point, the station can communicate with the access point through one of the two or more forward channels. Different stations can communicate with different forwarding channels and access points respectively, and different access points can also communicate with the same forwarding channel and access point. In addition, as described above, different forwarding channels of the same access point belong to different frequency bands respectively. In other words, the frequency bands in which different stations of the multiple stations connected to the same access point operate may be different or may be the same.

In this embodiment, the frequency band may refer to a frequency band including a plurality of Wi-Fi channels, such as a 2.4GHz frequency band, a 5GHz high frequency band, and a 5GHz low frequency band.

For example, when first-time forward channel allocation is performed after the access point is powered on, the channel allocation scheme 1 may be adopted, and the channel allocation scheme 2 may also be adopted to allocate a working channel to the access point, so that a station under the access point can access the Wi-Fi network through the access point.

It should be noted that, in the embodiment of the present application, if there is no special description, the working channel of the access point specifically refers to the forwarding channel of the access point.

In this embodiment, after the access point is powered on, the allocated working channel may include a channel on the frequency band P1. Illustratively, the frequency band P1 may be any one of a 2.4GHz frequency band, a 5GHz high frequency band, and a 5GHz low frequency band. The controller in the Wi-Fi network system can redistribute the working channels of the access points on the frequency band P1 according to the service characteristic information of the access points on the frequency band P1, so that the forward transmission channels of the access points are reasonably distributed, the overall throughput of the Wi-Fi network system is improved, and the time delay is reduced.

Next, referring to fig. 5, a channel allocation method provided in an embodiment of the present application is described by way of example. The method may be applied to the Wi-Fi network system shown in fig. 4.

In step 501a, the access point C1 may determine the traffic characteristic information of the access point C1 on the frequency band P1.

In some embodiments, the service characteristic information of the access point on the frequency band P1 may include a service type performed by a station connected to the access point and operating on the frequency band P1.

For convenience of description, a station connected to an access point and operating in the frequency band P1 may be referred to as a station in the frequency band P1 of the access point. It is to be understood that the station on the frequency band P1 of the access point is a type of station, and may include one station or a plurality of stations.

Illustratively, a plurality of traffic types may be preset. In one example, the plurality of traffic types may include Virtual Reality (VR) traffic types. The services belonging to the virtual reality service type may specifically include VR games, VR videos, and the like. The plurality of traffic types may also include a Voice (VO) traffic type. Illustratively, the voice traffic type may be a voice traffic type defined or specified in a quality of service (QoS) related specification in a Wi-Fi related standard (e.g., 802.11.Ac, etc.). Specifically, the service belonging to the voice service type may specifically include a telephone call, a voice call of an instant messaging application, and the like. The plurality of service types may further include a Video (VI) service type. Illustratively, the video traffic type may be a video traffic type defined or specified in a quality of service related specification in a Wi-Fi related standard (e.g., 802.11.Ac, etc.). Specifically, the service belonging to the video service type may specifically include online video playing, video call of an instant messaging application, and the like. The plurality of traffic types may also include a Best Effort (BE) traffic type. Illustratively, the best effort traffic type may be a best effort traffic type defined or specified in a quality of service related specification in a Wi-Fi related standard (e.g., 802.11.Ac, etc.). Specifically, the service belonging to the best effort service type may specifically include web browsing and the like. The plurality of traffic types may further include a Background (BK) traffic type. Illustratively, the background traffic type may be a background traffic type defined or specified in a quality of service related specification in a Wi-Fi related standard (e.g., 802.11.Ac, etc.). Specifically, the service belonging to the background service type may specifically include receiving/sending mail or the like. Other traffic types may also be set empirically and are not listed here.

Illustratively, different priorities may be set for different traffic types. In one example, the priority of each service type may be as shown in table 1.

TABLE 1

Type of service	Priority level
		Virtual reality	Highest point of the design
Speech sound	Second highest
		Video	In
Best effort	Is the next lowest
		Background	Lowest level of

The priority corresponding to the service type shown in table 1 is only for illustration and is not limited. Different priorities can be preset for different service types according to experience or experiments.

For example, the access point may determine the service type of the service executed by the station on the frequency band P1 of the access point according to a service data packet sent by the station on the frequency band P1 of the access point to the access point. Taking the access point C1 as an example, the station D11, the station D12, and the station D13 are set as stations on the frequency band P1 of the access point C1. The access point C1 may parse the service data packet sent by the station D11, and determine the service type of the service executed by the station D11. The access point C1 may also parse the service data packet sent by the station D12 to determine the service type of the service executed by the station D12. The access point C1 may also parse the service data packet sent by the station D13, and determine the service type of the service executed by the station D13. More specifically, under Wi-Fi related standards (e.g., 802.11.Ac, etc.), when a station encapsulates a service packet at a Radio Link Control (RLC) layer, an identification of the service type to which the service packet belongs may be encapsulated in an RLC header. The access point can analyze the RLC header of the service data packet at the RCL layer, so as to obtain the service type of the service data packet. Therefore, the service type of the service executed by the station on the frequency band P1 of the access point C1 can be obtained.

For example, the access point may determine the service type of the service executed by the station on the frequency band P1 of the access point according to the service type to which the service data packet sent by the access point to the station on the frequency band P1 of the access point belongs.

In some embodiments, the service characteristic information of the access point in the frequency band P1 may include a service type of a service performed by a station on the frequency band P1 of the access point and a frequency of performing the service performed by the station on the frequency band P1 of the access point.

For example, the access point may detect and count the traffic type of the service executed by the station on the frequency band P1 of the access point in every time period T1. Specifically, if it is detected that n sites under the access point (the n sites are sites on the frequency band P1 of the access point) execute the service of the service type E1 (the service of the service type E1 refers to a service belonging to the service type E1) in the time period T1, it is determined that the sites on the frequency band P1 of the access point execute the service of the service type E1 n times in the time period T1. Then, the number of times of the service of each service type executed by the station on the frequency band P1 of the access point in m time periods T1 is counted, so as to obtain the execution frequency of the service executed by the access point and the service type of the executed service. The time period T1 may be preset empirically, and may be, for example, 1 minute long, 2 minutes long, etc., which are not listed here. m may be a preset value, for example, 10, or 20, etc., which are not listed here.

In one illustrative example, it may be set that the time period T1 may be 1 minute and m may be 10. M access points may be set in the Wi-Fi network, and the number of services executed by the station on the frequency band P1 of the access point k in the M access points (or the number of times that the station executes the services on the frequency band P1 of the access point k) may be recorded as N _k . The industries listed in Table 1The service type is taken as an example, the number of services under the virtual reality service type of the access point k can be recorded as N _k,VR The number of services under the voice service type can be recorded as N _k,VO The number of services under the video service type can be recorded as N _k,VI The number of services under the best effort service type can be recorded as N _k,BE The number of services under the background service type can be recorded as N _k,BK . The access point k can detect the service type of the service executed by the station on the frequency band P1 every 1 minute, if n exists ₁ If the service type of the service executed by each access point is the virtual reality service type, then the service type is recorded as N _k,VR ＝n ₁ If there is n ₂ If the service type of the service executed by each access point is a voice service type, then note N _k,VO ＝n ₂ If there is n ₃ If the service type of the service executed by each access point is a video service type, then the service type is recorded as N _k,VE ＝n ₃ If there is n ₄ If the service type of the service executed by each access point is the best effort service type, then note N _k,BE ＝n ₄ If there is n ₅ If the service type of the service executed by the access point is the background service type, then the operation is recorded as N _k,BK ＝n ₅ 。

The access point k may count the total times or the average times of the station on the frequency band P1 executing the services in each service type within 10 minutes, to obtain the execution frequency of the station on the frequency band P1 of the access point k executing the services in each service type. The average number may be a simple average number or a weighted average number.

For example, when the average number is a weighted average number, the weights corresponding to the services executed at different times may be different. In one example, the later the service execution time, the greater the weight corresponding to the service. The weights corresponding to the services executed at different times may be preset according to experience, and are not described herein again. Illustratively, the service execution time may be determined by the reception time of the service data packet received by the access point k.

For example, the execution frequency of the service under the virtual reality service type of the access point k can be recorded as

The execution frequency of the service under the voice service type can be recorded as

The execution frequency of the service under the video service type can be recorded as

The frequency of execution of the traffic in the best effort traffic type can be noted as

The execution frequency of the service under the background service type can be recorded as

The other access point may refer to the access point k to determine the execution frequency of the station executing the service of each service type on the frequency band P1 of the other access point.

In some embodiments, the traffic characteristic information of the access point on the frequency band P1 may include traffic load information of the access point on the frequency band P1. For example, the traffic load information of the access point on the frequency band P1 may include the number of data packets exchanged between the access point and the station on the frequency band P1 of the access point in the time period T2. The time period T2 may be preset empirically, and may be, for example, 1 minute long, 2 minutes long, etc., which are not listed here. It can be understood that, in a certain period of time, the greater the number of data packets exchanged between the access point and the station on the frequency band P1 of the access point, the heavier the traffic load of the access point can be indicated or reflected. For example, the traffic load information of the access point on the frequency band P1 may include the number of stations on the frequency band P1 of the access point. It can be understood that the larger the number of stations on the frequency band P1 of the access point is, the heavier the traffic load of the access point can be illustrated or reflected.

With the above scheme, in step 501a, the access point C1 may determine the service characteristic information of the access point C1 on the frequency band P1.

In step 501b, the access point C2 may determine the service characteristic information of the access point C2 on the frequency band P1. Specifically, reference may be made to the above description of step 501a, which is not described herein again.

In step 501C, the access point C3 may determine the service characteristic information of the access point C3 on the frequency band P1. Specifically, reference may be made to the above description of step 501a, which is not described herein again.

It should be noted that, although the above describes step 501a, then describes step 501b, and step 501c in the order of the lines, the execution order of steps 501a, 501b, and step 501c is not limited. Steps 501a, 501b, and 501c may be executed simultaneously or sequentially.

Through the scheme, each access point can respectively determine the service characteristic information of each access point on the frequency band P1.

With continued reference to fig. 5, each access point may transmit its own traffic characteristic information on frequency band P1 to the controller. In step 503a, the access point C1 sends the service characteristic information of the access point C1 on the frequency band P1 to the controller. In step 503b, the access point C2 sends the traffic characteristic information of the access point C2 on the frequency band P1 to the controller. In step 503C, the access point C3 sends the traffic characteristic information of the access point C3 on the frequency band P1 to the controller

Continuing to refer to fig. 5, the exemplary embodiment of the controller determining the channel selection order on the frequency band P1 according to the traffic characteristic information of the access point on the frequency band P1 is described.

When or after receiving the service characteristic information on the frequency band P1 sent by the multiple access points, the controller may execute step 505 to determine a channel selection order on the frequency band P1 according to the service characteristic information on the frequency band P1 of the multiple access points.

In some embodiments, if the service characteristic information of the access point includes a service type of a service performed by a station on the frequency band P1 of the access point, in step 505, the controller may determine a channel selection order of the plurality of access points on the frequency band P1 according to the service type of the service performed by the station on the frequency band P1 of the plurality of access points. For example, as mentioned above, different service types have different priorities, and the controller may determine the channel selection order of each access point on the frequency band P1 according to the priority of the service type of the service executed by the station on the frequency band P1 of each access point.

In an illustrative example, taking the plurality of access points including the access point C1, the access point C2, and the access point C3 as an example, if the priority of the traffic type of the station on the frequency band P1 of the access point C2 is higher than the priority of the traffic type of the station on the frequency band P1 of the access point C1, and the priority of the traffic type of the station on the frequency band P1 of the access point C1 is higher than the priority of the traffic type of the station on the frequency band P1 of the access point C3, it may be determined that the access point C2 performs channel selection on the frequency band P1 before the access point C1, and the access point C1 performs channel selection on the frequency band P1 before the access point C3, in other words, in the determined channel selection order on the frequency band P1, the access point C2 is located before the access point C1, and the access point C1 is located before the access point C3.

In an example of this example, when there are multiple stations on the frequency band P1 of the access point, a service type with the highest priority among services performed by the multiple stations is used as a service type of the service performed by the station on the frequency band P1 of the access point, so as to determine the channel selection order.

In some embodiments, if the service characteristic information of the access point on the frequency band P1 may include a service type of a service executed by a station on the frequency band P1 of the access point and an execution frequency of the service executed by the station on the frequency band P1 of the access point, in step 505, the controller may determine a channel selection order of the access points on the frequency band P1 according to the service type of the service executed by the station on the frequency band P1 of the access points and the execution frequency of the service executed by the station on the frequency band P1 of the access points.

In one illustrative example, the controller can determine the channel quality requirement for the access point based on the traffic type of traffic being performed by the station in frequency band P1 of the access point and the frequency of the traffic being performed by the station in frequency band P1 of the access point. The preset multiple service types including virtual reality service type, voice service type, video service type, best effort service type and background service type are taken as examples. As aboveThe execution frequency of the service under the virtual reality service type of the access point k can be recorded as

The channel quality requirement Q of the access point k on the frequency band P1 can be determined by formula (1) _k 。

Wherein, W _VR Weight corresponding to virtual reality service type, W _VO For the weight corresponding to the type of voice traffic, W _VI Weight, W, corresponding to the video service type _BE Weight corresponding to best effort traffic type, W _BK And the weight is corresponding to the background service type. The weight corresponding to each service type may be a preset weight.

The controller calculates the channel quality demand degree { Q ] of each access point in the plurality of access points on the frequency band P1 _k In time zone P1, or later, the channel quality requirement Q of each ap may be set to _k And sorting the sizes of the channels, wherein the obtained sorting sequence can be a channel selection sequence on the frequency band P1. Taking the example that the plurality of access points include the access point C1, the access point C2, and the access point C3, it may be set that the access point C2 is in a frequency bandIf the channel quality demand degree on the P1 > the channel quality demand degree of the access point C1 on the frequency band P1 > the channel quality demand degree of the access point C3 on the frequency band P1, it is determined that the access point C2 performs channel selection on the frequency band P1 before the access point C1 performs channel selection on the frequency band P1 before the access point C3 performs channel selection on the frequency band P1. In other words, in the determined channel selection order on the frequency band P1, the access point C2 is located before the access point C1, and the access point C1 is located before the access point C3.

In some embodiments, if the traffic characteristic information of the access point on the frequency band P1 may include traffic load information of the access point on the frequency band P1, in step 505, the controller may determine a channel selection order of the multiple access points on the frequency band P1 according to the traffic load information of the multiple access points on the frequency band P1.

For example, as described above, the traffic load information of the access point on the frequency band P1 may include the number of stations on the frequency band P1 of the access point. In step 505, the controller may sort the access points according to the number of stations on the frequency band P1 of the access point, so as to obtain a channel selection sequence on the frequency band P1. In an example, when the number of stations on the frequency band P1 of two or more access points is equal, the two or more access points may be sorted according to the number of data packets exchanged between the access point and the stations on the frequency band P1 and the size of the data packets.

Through the scheme, the channel selection sequence can be determined. It should be noted that, in this embodiment of the application, if there is no special description, the channel selection sequence refers to a sequence from front to back, taking an access point C1, an access point C2, and an access point C3 as an example, when the access point C2 needs to perform channel selection before the access point C1, and the access point C1 needs to perform channel selection before the access point C3, the channel selection sequence of the three access points is: access point C2 is located before access point C1 and access point C1 is located before access point C3.

Next, in the case where the access point C2 precedes the access point C1 and the access point C1 precedes the access point C3 in the channel selection order set on the frequency band P1, the procedure in which the access point determines the operating channel is exemplified.

Continuing to refer to fig. 5, when the access point C2 precedes the access point C1 and the access point C1 precedes the access point C3 in the channel selection sequence, the controller may execute step 507 to send the indication information F1 to the access point C2. The indication information F1 belongs to a channel selection command, and may trigger or instruct the access point C2 to perform operating channel selection.

After receiving the indication message F1, the access point C2 may execute step 509 to evaluate the channel on the frequency band P1 perceived by the access point C2. For example, taking the estimation of the channel S1 on the frequency band P1 as an example, the access point C2 may determine the channel busyness of the channel S1, the number of access points working on the channel S1, and other interference indexes. Specifically, the access point C2 may monitor a duration that the channel S1 is occupied (there is data transmission on the channel S1), and then compare the duration that the channel S1 is occupied with a total duration that the channel S1 is monitored, so as to obtain a channel busy level of the channel S1. Access point C2 may identify the access point operating on channel S1 by a beacon (beacon) frame transmitted on channel S1. The access point C2 may determine the channel interference value of the channel S1, that is, the channel estimation result of the channel S1, according to the interference index, such as the channel busyness of the channel S1 and the number of access points working on the channel S1, determined by the access point C2. The access point C2 may evaluate other channels sensed by the access point C2 with reference to the scheme for evaluating the channel S1, which is not described in detail herein.

It will be appreciated that the channel currently being operated by access point C1 may be the best or better quality channel when evaluated by access point C2. When the access point C2 evaluates the current working channel of the access point C1 with a poor evaluation result due to the interference of the access point C1, the access point C2 misses the optimal or better channel. Similarly, when the current working channel of the access point C3 is the channel with the best quality or better quality, the access point C2 may miss the channel with the best quality or better quality. To avoid the aforementioned situation. In the embodiment of the present application, the access point C2 may deduct the influence of the access point C1 when evaluating the current working channel of the access point C1. Access point C1 may deduct the impact of access point C3 when evaluating the current operating channel of access point C3. The specific scheme may be as follows.

In some embodiments, as shown in fig. 5, the indication information F1 may carry the identities of the access points located after the access point C2 in the channel selection order, i.e. the indication information F1 may carry the identity of the access point C1 and the identity of the access point C2. When the access point C2 evaluates the channel, the current working channel of the access point C1 may be determined according to the identifier of the access point C1, and then the interference of the access point C1 may be deducted when the interference index of the current working channel of the access point C1 is determined. For convenience, the channel S2 may be set as the current operating channel of the access point C1. Specifically, when determining the channel busyness of the channel S2, the duration of the channel S2 occupied by the access point C1 may be deducted. Access point C1 may be excluded when determining the number of access points operating on channel S2. The access point C2 may determine the evaluation result of the channel S2 according to the interference index of the channel S2 after subtracting the interference of the access point C1 on the channel S2.

When evaluating the current working channel of the access point C3, the interference of the access point C3 is deducted, and the scheme for evaluating the access point C1 by using the access point C2 may be specifically referred to, which is not described herein again.

In one illustrative example, the channel quality may be represented by a channel quality score, which may be calculated by equation (2).

Wherein, score _k,s Representing the access point k evaluating the channel S to obtain a channel quality score, inerf _all Representing the total interference, inerf, on the channel S _k+l Representing the interference of an access point operating on channel S and following access point k in the channel selection order on channel S, and α is a conversion factor that converts the interference into a fractional interference percentile value.

There is often an overlap in frequency between adjacent Wi-Fi channels on the same frequency band, causing mutual interference. In particular, the mutual interference between channels in the 2.4GHz band is large.

In some embodiments, the access point may subtract the impact or interference of an access point located after the access point in the channel selection order when evaluating any channel.

In one illustrative example, access point C2 is used to evaluate channel S3 for illustration. Channel S3 may be any channel that is perceived by the access point and is located on frequency band P1. Specifically, the channel S3 may be the current working channel of the access point C1, or may not be the current working channel of the channel S3; the channel S3 may be the current operating channel of the access point C3, or may not be the current operating channel of the access point C3.

When the access point C2 evaluates the channel S3, the access point C2 may determine the influence of the access points (i.e., the access points C1 and C2) located after the access point C2 in the channel selection order when determining the channel busyness of the channel S3, the number of access points operating on the channel S3, and other interference indicators.

As for deducting the influence of the access point C1 when determining the channel busyness of the channel S3, the following can be specifically taken.

In case 1, if the channel S3 is the current working channel of the access point C1, the duration of the channel S3 occupied by the access point C1 may be deducted.

In case 2, if the channel S3 is not the current operating channel of the access point C1, and when there is an overlap in frequency between the channel S3 and the current operating channel of the access point C1, the time length of the access point C1 occupying the overlapped frequency may be deducted. The overlapping frequency is the overlapping frequency of channel S3 and the channel in which access point C1 is currently operating.

When determining the channel busyness of the channel S3, the specific scheme for subtracting the influence of the access point C3 may refer to the specific scheme for subtracting the influence of the access point C1, and is not described herein again.

The effect of subtracting access point C1 when determining the number of access points operating on channel S3 can be specifically described as follows.

In case a, if the channel S3 is the current operating channel of the access point C1, the access point C1 may be deducted from one or more access points operating on the channel S3 detected by the access point C2, that is, the access point C1 is excluded when determining the number of access points operating on the channel S3.

In case b, if the channel S3 is not the current operating channel of the access point C1, and there is an overlap in frequency between the channel S3 and the current operating channel of the access point C1. It is to be appreciated that in case 2, when access point C1 occupies overlapping frequencies, access point C1 may be considered by access point C2 as an access point operating on channel S3. Thus, in case b, the access point may exclude access point C1 when determining the number of access points on operating channel S3.

When determining the number of access points operating on the channel S3, the specific scheme for subtracting the influence of the access point C3 may refer to the specific scheme for subtracting the influence of the access point C1, and is not described herein again.

In one illustrative example, the channel quality may be represented by a channel quality score, which may be calculated by equation (3).

Wherein, score _k,s Representing the access point k of the M access points to evaluate the channel S to obtain the channel quality fraction, inerf _all Representing the total interference on the channel S,

representing the interference of the access point, which is in the order of channel selection after the access point k, to the channel S among the M access points, and α is a conversion coefficient for converting the interference into a percentile interference value.

The access point C2 can obtain the estimation result G1 of the estimated channel thereof through step 509. In step 511, the access point C2 may determine the operating channel H1 according to the evaluation result G1. For example, the channel with the highest channel quality score may be used as the operating channel H1.

If the working channel H1 is different from the original working channel of the access point C2, the access point C2 may switch from the original working channel to the working channel H1. If the working channel H1 is the same as the original working channel of the access point C2, the access point C2 still keeps working in the working channel H1.

After or when the access point C2 determines the working channel H1, the access point C2 may execute step 513 to send channel switching information J1 to the controller, so as to report to the control point that the access point C2 switches or is about to switch into the working channel H1.

The controller may respond to the channel switching information J1, and according to the channel selection order determined in step 505, send an indication information F2 to the access point C1 in step 515, trigger or instruct the access point C1 to perform step 517, and evaluate the channel on the frequency band P1 perceived by the access point C1. Step 517 may refer specifically to the description above for step 509.

For example, the indication information F2 may carry the identity of the access point located after the access point C1 in the channel selection order, that is, the indication information F2 may carry the identity of the access point C3. When the access point C1 evaluates the channel, the current working channel of the access point C3 may be determined according to the identifier of the access point C3, and then the interference of the access point C3 may be deducted when the interference index of the current working channel of the access point C3 is determined. Reference may be made specifically to the above description of step 509.

The access point C1 can obtain an evaluation result G2 of its evaluated channel through step 517. In step 519, the access point C1 may determine the operating channel H2 according to the evaluation result G2. For example, the channel with the highest channel quality score may be used as the operating channel H2.

If the working channel H2 is different from the original working channel of the access point C1, the access point C1 may switch from the original working channel to the working channel H2. If the working channel H2 is the same as the original working channel of the access point C1, the access point C1 still keeps working in the working channel H2.

When or after the access point C1 determines the working channel H2, the access point C1 may execute step 521, sending channel switching information J2 to the controller, so as to report to the control point that the access point C1 switches or is about to switch into the working channel H2.

The controller may respond to the channel switching information J2, and according to the channel selection order determined in step 505, send indication information F3 to the access point C3 through step 523, trigger or instruct the access point C3 to perform step 525, and evaluate the channel on the frequency band P1 sensed by the access point C3. Step 523 may be referred to specifically above in reference to the description of step 509.

The access point C3 may obtain an evaluation result G3 of its evaluated channel, via step 525. In step 527, the access point C3 may determine the operating channel H3 according to the evaluation result G3. For example, the channel with the highest channel quality score may be used as the operating channel H3.

If the working channel H3 is different from the original working channel of the access point C3, the access point C3 may switch from the original working channel to the working channel H3. If the working channel H3 is the same as the original working channels of the access point C3 and the access point C3, the access point C3 still keeps working in the working channel H3.

For example, when or after the access point C3 determines the working channel H3, the access point C3 may send channel switching information to the controller, so as to report to the control point that the access point C3 switches or is about to switch into the working channel H3.

By the scheme, the access points can be sequentially indicated to perform channel selection according to the service characteristic information of the access points.

It is understood that the traffic performed by the stations in the Wi-Fi network is not fixed, and therefore, the method shown in fig. 5 may be performed periodically. For example, the duration of each cycle may be equal to or greater than the duration of the m periods T1 described above. For example, in each period, the access point may determine the traffic characteristic information in the period and report to the controller, so that the controller determines the channel selection sequence and instructs the access point to select the channel.

In some embodiments, the channel allocation method provided in the embodiments of the present application may also be applied to a Wi-Fi network in which the backhaul channel is a wireless channel, and an example is described below.

Fig. 6 shows a Wi-Fi network system, which includes an access point 610, an access point 620, an access point 630, and an access point 640. Wherein the access point 610 may act as a controller. Illustratively, the access point 610 may be a gateway configured with a Wi-Fi module.

Access points 610, 620, 630, 640 may be dual-frequency access points. The dual-frequency access point is provided with two wireless radio frequency chips. The two wireless radio frequency chips respectively correspond to different frequency bands. Illustratively, as shown in fig. 6, the access points 610, 620, 630 and 640 are dual-band access points configured with 2.4GHz rf wireless chips and 5GHz rf wireless chips. Illustratively, the two radio frequency chips in the dual-frequency access point can be independent of each other. The wireless radio frequency chip of one frequency band in the dual-frequency access point can be used for returning, and the wireless radio frequency chip of the other frequency band can be used for forwarding. Or the wireless radio frequency chip in one frequency band in the dual-frequency access point is used for both return transmission and forward transmission, and the wireless radio frequency chip in the other frequency band can be used for forward transmission or does not work.

Illustratively, as shown in FIG. 6, the backhaul channel may be a channel (e.g., channel 149) on the 5GHz band. In other words, the access point can transmit back through the 5GHz wireless radio frequency chip. The access point can forward through the 2.4GHz wireless radio frequency chip. That is, the forward channel and the return channel of the access point are channels on different frequency bands. In this case, the forward channel of the access point is an independent forward channel. Taking the Wi-Fi network system shown in fig. 6 as an example, the forward channel between the access point 610 and the station 611 may be a channel on a 2.4GHz band, for example. The fronthaul channel between access point 620 and station 620, and the fronthaul channel between access point 620 and station 622 may be channels on the 2.4GHz band. The fronthaul channel between access point 630 and station 631 may be a channel in the 2.4GHz band. The fronthaul channel between access point 640 and station 641 may be a channel in the 2.4GHz band.

The channel allocation method provided by the embodiment of the application can be used for reallocating the forward channel to the access point of which the forward channel is the independent forward channel. Taking the Wi-Fi network system shown in fig. 6 as an example, the controller (access point 601) may execute the channel allocation method provided in the embodiment of the present application, and receive service characteristic information of the access point 610 on a 2.4GHz frequency band, service characteristic information of the access point 620 on the 2.4GHz frequency band, service characteristic information of the access point 630 on the 2.4GHz frequency band, and service characteristic information of the access point 640 on the 2.4GHz frequency band; determining the channel selection sequence of the access point 610, the access point 620, the access point 630 and the access point 640 on the 2.4GHz frequency band according to the service characteristic information of the access point 610 on the 2.4GHz frequency band, the service characteristic information of the access point 630 on the 2.4GHz frequency band and the service characteristic information of the access point 640 on the 2.4GHz frequency band; and according to the determined channel selection sequence, indicating the access points in the channel selection sequence to perform channel selection on the 2.4GHz frequency band. Specifically, reference may be made to the above description of each method embodiment shown in fig. 5, which is not described herein again.

Similarly, the method provided in this embodiment of the present application may be used to reallocate the fronthaul channel to the access point where the independent fronthaul channel is a channel in the 5GHz frequency band, which may specifically refer to the above description and is not described herein again.

Fig. 7 shows a Wi-Fi network system, which includes an access point 710, an access point 720, an access point 730, and an access point 740. Access point 710 may serve as a controller, among other things. Illustratively, the access point 710 may be a gateway configured with a Wi-Fi module.

The access points 710, 720, 730, 740 can be tri-band access points. The triple-frequency access point can be configured with three wireless radio frequency chips, and the three wireless radio frequency chips respectively correspond to different frequency bands. Illustratively, as shown in fig. 7, the access points 710, 720, 730, 740 are triple-band access points configured with 2.4GHz rf chips, 5GHz low-band rf chips, and 5GHz high-band rf chips. Illustratively, three wireless radio frequency chips in the tri-band access point can be independent from each other. The wireless radio frequency chip of one frequency band in the double-frequency access point can be used for returning, and the wireless radio frequency chips of the other two frequency bands can be used for forwarding. Or the wireless radio frequency chip of one frequency band in the three-frequency access point is used for both return transmission and forward transmission, and the wireless radio frequency chips of the other two frequency bands can be used for forward transmission or do not work.

Taking the Wi-Fi network shown in fig. 7 as an example, the backhaul channel may be a channel on the 5GHz low band (e.g., channel 149). In other words, the access point can transmit back through the 5GHz low band rf chip. The access point can forward through the 2.4GHz wireless radio frequency chip and/or the 5GHz high wireless radio frequency chip.

As shown in fig. 7, the forwarding channel between the access point 710 and the station 711 may be a channel (e.g., channel 1) on a 2.4GHz band, which is an independent forwarding channel. The forward channel between access point 720 and station 721 may be a channel in the 2.4GHz band (e.g., channel 6), which is a separate forward channel. The forward channel between access point 730 and station 731 may be a channel in the 2.4GHz band (e.g., channel 1), which is a separate forward channel. The controller (access point 710) may execute the channel allocation method provided in this embodiment of the present application, and receive service characteristic information of the access point 710 on the 2.4GHz band, service characteristic information of the access point 720 on the 2.4GHz band, and service characteristic information of the access point 730 on the 2.4GHz band; determining a channel selection sequence of the access point 710, the access point 720 and the access point 730 on the 2.4GHz frequency band according to the service characteristic information of the access point 710 on the 2.4GHz frequency band, the service characteristic information of the access point 720 on the 2.4GHz frequency band and the service characteristic information of the access point 730 on the 2.4GHz frequency band; and according to the determined channel selection sequence, indicating the access points in the channel selection sequence to perform channel selection on the 2.4GHz frequency band. Specifically, reference may be made to the above description of each method embodiment shown in fig. 5, and details are not repeated here.

The forward channel between access point 720 and station 722 may be a channel on the 5GHz high band (e.g., channel 149) as a separate forward channel. The forward channel between access point 740 and station 741 may be a channel in the 5GHz high band (e.g., channel 157) that is a separate forward channel. The controller (access point 710) may execute the channel allocation method provided in this embodiment of the present application, and receive service characteristic information of the access point 720 in the 5GHz high frequency band and service characteristic information of the access point 740 in the 5GHz high frequency band; determining the channel selection sequence of the access point 720 and the access point 740 on the 5GHz high-frequency band according to the service characteristic information of the access point 720 on the 5GHz high-frequency band and the service characteristic information of the access point 740 on the 5GHz high-frequency band; and according to the determined channel selection sequence, instructing the access points in the channel selection sequence to perform channel selection on the 5GHz high frequency band. Specifically, reference may be made to the above description of each method embodiment shown in fig. 5, which is not described herein again.

Similarly, the method provided in this embodiment of the present application may be used to reallocate the fronthaul channel to the access point where the independent fronthaul channel is a channel in the 5GHz low frequency band, which may specifically refer to the above description and is not described herein again.

The channel allocation method provided by the embodiment of the application can determine the channel selection sequence of the multiple access points according to the service characteristic information of the multiple access points, and instruct the access points to perform channel selection according to the determined channel selection sequence, so that channel allocation can be performed according to the service requirements of the access points, the overall throughput of a network system is improved, the time delay is reduced, and the overall network experience of a user is improved.

Referring to fig. 8, an embodiment of the present application provides a channel allocation method, which is applied to a controller, where the controller is at least used for controlling a first access point and a second access point. As shown in fig. 8, the method includes the following steps.

Step 801, receiving first service characteristic information from a first access point, where the first service characteristic information is service characteristic information of the first access point on a first frequency band.

Specifically, reference may be made to the above description of step 501a in fig. 5, which is not repeated herein.

Step 803, receiving second service characteristic information from a second access point, where the second service characteristic information is service characteristic information of the second access point on the first frequency band.

Specifically, reference may be made to the above description of step 501a in fig. 5, which is not described herein again.

Step 805, determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the first service characteristic information and the second service characteristic information.

Specifically, reference may be made to the above description of step 505 in fig. 5, which is not described herein again.

Step 807, when the first access point is located before the second access point in the channel selection sequence, sending first indication information to the first access point to trigger the first access point to determine a first working channel from a plurality of channels on the first frequency band.

Specifically, reference may be made to the above description of step 507 in fig. 5, and details are not repeated here.

In some embodiments, the first service characteristic information includes a service type of a service executed by a first class of station connected to the first access point, the second service characteristic information includes a service type of a service executed by a second class of station connected to the second access point, and the first class of station and the second class of station are stations operating in the first frequency band; the determining, according to the first service characteristic information and the second service characteristic information, a channel selection order of the first access point and the second access point includes: and determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the service type of the service executed by the first type station and the service type of the service executed by the second type station.

In an example of these embodiments, the service type of the service executed by the first class site is at least one of multiple preset service types, the service type of the service executed by the second class site is one or more of the multiple preset service types, and different service types in the multiple preset service types correspond to different priorities; the determining, according to the first service characteristic information and the second service characteristic information, a channel selection order of the first access point and the second access point includes: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the priority of the service type of the service executed by the first type of station and the priority of the service type of the service executed by the second type of station.

In one example of this example, the plurality of traffic types includes at least one of:

In another example of these embodiments, the first service characteristic information further includes an execution frequency of the service executed by the first type station, and the second service characteristic information further includes an execution frequency of the service executed by the second type station; the determining, according to the first service characteristic information and the second service characteristic information, a channel selection order of the first access point and the second access point includes: and determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the execution frequency and the service type of the service executed by the first type station and the execution frequency and the service type of the service executed by the second type station.

In some embodiments, the first indication information is used to trigger the first access point to evaluate the plurality of channels for the first access point to first operate a channel from the plurality of channels; the plurality of channels comprise a first channel to be evaluated, the first indication information comprises an identifier of the second access point, and the identifier of the second access point is used for deducting the interference of the second access point to the first channel to be evaluated when the first access point evaluates the first channel to be evaluated. The first channel to be evaluated may be any channel in the multiple channels, and specifically, may be a current operating channel of the second access point, or may be a channel other than the current operating channel of the second access point.

Specifically, reference may be made to the above description of step 509 in fig. 5, which is not described herein again.

In some embodiments, the method further comprises: sending second indication information to the second access point to trigger the second access point to determine a second operating channel from the plurality of channels when or after receiving channel switch information from the first access point; the channel switching information is information sent by the first access point when or after the first working channel is determined.

Specifically, reference may be made to the above description of step 513 in fig. 5, and details are not described here again.

In some embodiments, the first frequency band is any one of:

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

According to the method provided by the embodiment of the application, the channel selection sequence of the access points can be determined according to the service characteristic information of the access points, and the access points are indicated to perform channel selection according to the determined channel selection sequence, so that channel allocation can be performed according to the service requirements of the access points, the overall throughput of a network system is improved, the time delay is reduced, and the overall network experience of a user is improved.

Referring to fig. 9, an embodiment of the present application provides a channel allocation method, which is applied to a first access point. As shown in fig. 9, the method includes the following steps.

Step 901, receiving first indication information from a controller, where the first indication information includes an identifier of a second access point; the second access point is an access point located after the first access point in the channel selection sequence corresponding to the first frequency band.

Reference may be made specifically to the above description of step 507 in fig. 5.

Step 903, in response to the first indication information, evaluating a plurality of channels on the first frequency band to obtain an evaluation result. Wherein the plurality of channels comprises a first channel to be evaluated; the evaluating the plurality of channels over the first frequency band comprises: and deducting the interference of the second access point to the first channel to be evaluated when the first channel to be evaluated is evaluated. The first channel to be evaluated may be any channel in the multiple channels, and specifically, may be a current operating channel of the second access point, or may be a channel other than the current operating channel of the second access point.

Step 905, determining a first working channel from the plurality of channels according to the evaluation result.

Specifically, reference may be made to the above description of step 511 in fig. 5, which is not described herein again.

In some embodiments, the method further comprises: sending first service characteristic information to the controller so that the controller determines the position of the first access point in the channel selection sequence according to the first service characteristic information; the first service characteristic information is service characteristic information of the first access point on the first frequency band.

In some embodiments, the first frequency band is any one of:

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

In the channel allocation method provided in the embodiment of the present application, when the access point performs channel estimation, interference of other access points following the access point in the channel selection order to the current channel of the other access points may be deducted, so that when the current channel of the other access points is estimated, influence of the other access points on the channel where the other access points are located is not considered, and thus a channel with better channel quality may be better selected.

Referring to fig. 10, an embodiment of the present application provides a controller for Wi-Fi channel allocation. The controller may include a processor 1010, a transceiver 1020. When the access point is operating, processor 1010 executes computer instructions that cause the controller to perform the method illustrated in fig. 8. The transceiver 1020 is configured to receive first service characteristic information from a first access point, where the first service characteristic information is service characteristic information of the first access point on a first frequency band; the transceiver 1020 is further configured to receive second service characteristic information from a second access point, where the second service characteristic information is service characteristic information of the second access point on the first frequency band; the processor 1010 is configured to determine, according to the first service characteristic information and the second service characteristic information, a channel selection order of the first access point and the second access point on the first frequency band; the transceiver 1020 is further configured to send first indication information to the first access point to trigger the first access point to determine a first operating channel from a plurality of channels on the first frequency band when the first access point is located before the second access point in the channel selection order.

In some embodiments, as shown in fig. 10, the apparatus further comprises a memory 1030. Memory 1030 may be used to store the computer instructions described above, etc.

In some embodiments, the electronic device further comprises a communication bus 1040, wherein the processor 1010 is connected to the transceiver 1020 and the memory 1030 via the communication bus 1040, so as to execute the computer instructions stored in the memory 1130, and accordingly control the transceiver 1020 and other components.

Specific implementation of each component/device of the electronic device in the embodiment of the present application may be implemented by referring to each method embodiment shown in fig. 9, which is not described herein again.

Therefore, the channel selection sequence of the access points can be determined according to the service characteristic information of the access points, and the access points are indicated to perform channel selection according to the determined channel selection sequence, so that channel allocation can be performed according to the service requirements of the access points, the overall throughput of a network system is improved, the time delay is reduced, and the overall network experience of a user is improved.

Referring to fig. 11, an access point is provided in an embodiment of the present application. The access point may include a processor 1110, a transceiver 1120. Processor 1110 executes computer instructions that cause the access point to perform the method illustrated in fig. 9 when the access point is operating. Wherein the processor 1110 is configured to receive first indication information from the controller, where the first indication information includes an identifier of the second access point; the second access point is an access point positioned behind the first access point in the channel selection sequence corresponding to the first frequency band; processor 1110 is configured to evaluate, in response to the first indication information, a plurality of channels in the first frequency band to obtain an evaluation result; processor 1110 is configured to determine a first operating channel from the plurality of channels based on the evaluation; wherein the plurality of channels comprises a first channel to be evaluated; the processor 1110 is further configured to deduct interference of the second access point to the first channel to be evaluated when the first channel to be evaluated is evaluated.

In some embodiments, as shown in fig. 11, the apparatus further comprises a memory 1130. The memory 1130 may be used to store the computer instructions described above, and the like.

In some embodiments, the electronic device further comprises a communication bus 1140, wherein the processor 1110 may be connected to the transceiver 1120 and the memory 1130 via the communication bus 1140, so as to execute the computer instructions stored in the memory 1130 and control the components of the transceiver 1120 accordingly.

Therefore, when the access point carries out channel estimation, the interference of other access points behind the access point in the channel selection sequence to the current channels of the other access points can be deducted, so that when the current channels of the other access points are estimated, the influence of the other access points on the channels of the other access points is not considered, and the channels with better channel quality can be selected better.

It is understood that the processor in the embodiments of the present application may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. The general purpose processor may be a microprocessor, but may be any conventional processor.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in Random Access Memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (PROM), erasable Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

It is to be understood that the various numerical designations referred to in the embodiments of this application are merely for ease of description and distinction, and are not intended to limit the scope of the embodiments of the present application.

Claims

1.A channel allocation method, applied to a controller for controlling at least a first access point and a second access point; the method comprises the following steps:

receiving first service characteristic information from a first access point, wherein the first service characteristic information is service characteristic information of the first access point on a first frequency band;

receiving second service characteristic information from a second access point, wherein the second service characteristic information is service characteristic information of the second access point on the first frequency band;

determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the first service characteristic information and the second service characteristic information;

when the first access point is located before the second access point in the channel selection sequence, sending first indication information to the first access point to trigger the first access point to determine a first working channel from a plurality of channels on the first frequency band; the first indication information is used for triggering the first access point to evaluate the plurality of channels so that the first access point determines a first working channel from the plurality of channels; the plurality of channels comprise a first channel to be evaluated, the first indication information comprises an identifier of the second access point, and the identifier of the second access point is used for deducting the interference of the second access point on the first channel to be evaluated when the first access point evaluates the first channel to be evaluated;

after the first access point determines the first working channel, sending second indication information to the second access point to trigger the second access point to determine a second working channel from the plurality of channels.

2. The method according to claim 1, wherein the first service characteristic information includes a service type of a service executed by a first class of stations connected to the first access point, the second service characteristic information includes a service type of a service executed by a second class of stations connected to the second access point, and the first class of stations and the second class of stations are stations operating in the first frequency band;

the determining, according to the first service characteristic information and the second service characteristic information, a channel selection order of the first access point and the second access point on the first frequency band includes:

and determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the service type of the service executed by the first type station and the service type of the service executed by the second type station.

3. The method according to claim 2, wherein the service type of the service executed by the first class site is at least one of a plurality of preset service types, the service type of the service executed by the second class site is one or more of the plurality of service types, and different service types in the plurality of service types correspond to different priorities;

and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the priority of the service type of the service executed by the first type of station and the priority of the service type of the service executed by the second type of station.

4. The method of claim 3, wherein the plurality of traffic types includes at least one of:

5. The method according to claim 2, wherein the first service characteristic information further includes an execution frequency of the service executed by the first type station, and the second service characteristic information further includes an execution frequency of the service executed by the second type station;

and determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the execution frequency and the service type of the service executed by the first type station and the execution frequency and the service type of the service executed by the second type station.

6. The method according to any of claims 1-5, wherein said sending second indication information to said second access point after said first access point determines said first operating channel comprises: transmitting the second indication information to the second access point when or after receiving channel switching information from the first access point; the channel switching information is information sent by the first access point when or after the first working channel is determined.

7. The method according to any of claims 1-5, wherein the first frequency band is any of:

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

8. A channel allocation method, applied to a first access point; the method comprises the following steps:

receiving first indication information from a controller, wherein the first indication information comprises an identifier of a second access point; the second access point is an access point positioned behind the first access point in the channel selection sequence corresponding to the first frequency band; the second access point is used for determining a second working channel after the first access point determines the first working channel;

evaluating a plurality of channels on the first frequency band in response to the first indication information to obtain an evaluation result;

determining a first working channel from the plurality of channels according to the evaluation result; wherein the content of the first and second substances,

the plurality of channels comprises a first channel to be evaluated;

the evaluating the plurality of channels over the first frequency band comprises: and when the first channel to be evaluated is evaluated, deducting the interference of the second access point to the first channel to be evaluated.

9. The method of claim 8, further comprising: sending first service characteristic information to the controller so that the controller determines the position of the first access point in the channel selection sequence according to the first service characteristic information; the first service characteristic information is service characteristic information of the first access point on the first frequency band.

10. The method according to claim 8 or 9, wherein the first frequency band is any one of the following:

2.4GHz frequency band, 5GHz high frequency band, 5GHz low frequency band.

11.A channel allocation controller, wherein the controller is configured to control at least a first access point and a second access point; the controller includes: a transceiver and a processor;

the transceiver is configured to receive first service characteristic information from a first access point, where the first service characteristic information is service characteristic information of the first access point on a first frequency band;

the transceiver is further configured to receive second service characteristic information from a second access point, where the second service characteristic information is service characteristic information of the second access point on the first frequency band;

the processor is configured to determine, according to the first service characteristic information and the second service characteristic information, a channel selection order of the first access point and the second access point on the first frequency band;

the transceiver is further configured to send first indication information to the first access point to trigger the first access point to determine a first operating channel from a plurality of channels on the first frequency band when the first access point is located before the second access point in the channel selection order; the first indication information is used for triggering the first access point to evaluate the plurality of channels so that the first access point determines a first working channel from the plurality of channels; the plurality of channels comprise a first channel to be evaluated, the first indication information comprises an identifier of the second access point, and the identifier of the second access point is used for deducting the interference of the second access point to the first channel to be evaluated when the first access point evaluates the first channel to be evaluated;

12. The controller of claim 11, wherein the first service characteristic information includes a service type of a service performed by a first station connected to the first access point, wherein the second service characteristic information includes a service type of a service performed by a second station connected to the second access point, and wherein the first station and the second station are stations operating in the first frequency band;

the processor is further configured to determine a channel selection order of the first access point and the second access point on the first frequency band according to a service type of a service executed by the first class site and a service type of a service executed by the second class site.

13. The controller according to claim 12, wherein the service type of the service executed by the first class site is at least one of a plurality of preset service types, the service type of the service executed by the second class site is one or more of the plurality of service types, and different service types in the plurality of service types correspond to different priorities;

the processor is further configured to: and determining the channel selection sequence of the first access point and the second access point on the first frequency band according to the priority of the service type of the service executed by the first type of station and the priority of the service type of the service executed by the second type of station.

14. The controller according to claim 12, wherein the first service characteristic information further includes an execution frequency of the service executed by the first type station, and the second service characteristic information further includes an execution frequency of the service executed by the second type station; the processor is further configured to: and determining a channel selection sequence of the first access point and the second access point on the first frequency band according to the execution frequency and the service type of the service executed by the first type station and the execution frequency and the service type of the service executed by the second type station.

15. A first access point, the first access point comprising: a transceiver and a processor;

the processor is configured to receive first indication information from the controller, where the first indication information includes an identifier of the second access point; the second access point is an access point positioned behind the first access point in the channel selection sequence corresponding to the first frequency band; the second access point is configured to determine a second working channel after the first access point determines the first working channel;

the processor is configured to evaluate, in response to the first indication information, a plurality of channels on the first frequency band to obtain an evaluation result;

the processor is configured to determine a first working channel from the plurality of channels according to the evaluation result; wherein the content of the first and second substances,

the plurality of channels comprises a first channel to be evaluated;

the processor is further configured to deduct interference of the second access point to the first channel to be evaluated when evaluating the first channel to be evaluated.