CN107211400B - Network access control method, access point and access controller - Google Patents

Abstract

The embodiment of the invention relates to a network access control method and a device, wherein the method comprises the following steps: when the admission control request is determined to be accepted according to the user subscription information and/or the service authorization rule, establishing a scheduling rule corresponding to the first service flow; the first service flow is a service flow corresponding to the admission control request; and sending the scheduling rule to the access point AP so that the AP schedules the first traffic flow according to the scheduling rule. When the current channel free time of the AP is insufficient, the channel time occupied by the low-priority service flow can be released to ensure the service quality of the high-priority service flow. Thereby avoiding misuse of WLAN network resources by unauthorized users or services.

Description

Network admission control method, access point and access controller

technical field

The present invention relates to the field of communications, and in particular, to a network admission control method, an access point and an access controller.

Background technique

With the continuous maturity and development of the wireless local area network (Wireless Local Area Networks, WLAN for short) technology, the centralized control WLAN network (AC+FIT AP architecture) has been widely used.

Since the wireless transmission resources of an access point (AP) can be shared by multiple wireless stations (station, STA), in order to ensure the quality of service (QoS) of some specific services, the 802.11 protocol defines The admission mechanism of the wireless LAN is implemented, that is, when a STA initiates a service that requires bandwidth and delay guarantees, the STA sends an admission control request to the AP, requesting it to configure the corresponding bandwidth and delay. Decide whether to accept the admission control request. If the request is accepted, the AP allocates specific resources for the request to ensure the QoS of the service initiated by the STA.

In the prior art, when the STA and the AP perform network admission control interaction, the admission control request is completely dependent on the initiation of the STA. It is converted into an admission control request and sent to the AP. If the STA does not initiate an admission control request, the AP, as a forwarding device, cannot obtain service information, and cannot autonomously allocate channel time according to the QoS requirements of the service to ensure its QoS.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a network admission control method, an access point, and an access controller. The access controller (Access controller, AC for short) determines, according to user subscription information or service authorization rules, to accept all information in a first request message. When carrying an admission control request, the AP is instructed to establish a scheduling rule to schedule and transmit the service flow corresponding to the admission control request, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

In a first aspect, the present invention provides a method for network admission control, the method comprising: when the access controller AC determines to accept the admission control request according to user subscription information and/or service authorization rules, establishing and communicating with a first service flow a corresponding scheduling rule, wherein the first service flow is a service flow corresponding to the admission control request;

The scheduling rule is sent to the access point AP, so that the AP schedules the first service flow according to the scheduling rule.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the determining to accept the admission control request according to the user subscription information and/or the service authorization rule includes:

When it is determined to provide service quality assurance according to the user subscription information and/or the service authorization rule, determining the time that the channel is occupied when transmitting the first service flow;

Comparing the time occupied by the channel when transmitting the first service flow with the current free time of the channel to obtain a comparison result;

According to the comparison result, it is determined to accept the admission control request.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the determining to accept the admission control request according to the comparison result includes:

The admission control request is accepted when the comparison result is that the time occupied by the transmission of the first service flow on the channel is less than or equal to the current free time of the channel.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the determining to accept the admission control request according to the comparison result includes:

When the comparison result is that the time that the first service flow occupies the channel is longer than the current free time of the channel, it is determined that there is a second service flow, and the second priority level corresponding to the second service flow is lower than the the first priority level corresponding to the first service flow, and send first indication information to the AP, where the first indication information is used to indicate the time for the AP to release the channel occupied by the second service flow;

After receiving the confirmation information sent by the AP that the time of the channel occupied by the second service flow has been released, the admission control request is accepted.

With reference to the second possible implementation manner or the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes: when establishing and communicating with the first service flow After the corresponding scheduling rule, the idle time of the channel is updated.

With reference to any one of the first aspect to the third possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the admission control request is sent by the AP or the network side device sends.

With reference to the fifth possible implementation manner of the first aspect, in the sixth possible implementation manner of the first aspect, when the admission control request is sent by the network side device, and the admission control request is When an uplink admission control request is made, the method further includes: sending second indication information to the AP, where the second indication information is used for the AP to send the upstream classification information to the wireless station STA.

In a second aspect, the present invention provides a network admission control method, the method comprising: an access point AP receiving a resource request message sent by an access controller AC, wherein the resource request message includes an admission control request, and a first priority level corresponding to a first service flow, wherein the admission control request includes parameter information, and the first service flow is a service flow corresponding to the admission control request;

Determine whether the current free time of the channel satisfies the admission control request according to the parameter information;

When it is determined that the current free time of the channel satisfies the admission request, establishing a scheduling rule corresponding to the first service flow;

When it is determined that the current free time of the channel does not satisfy the admission control request, according to the first priority level, release the time occupied by the transmission of the current service flow on the channel so as to satisfy the admission control request, wherein the The priority level corresponding to the current service flow is lower than the first priority level.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the determining whether the current free time of the channel satisfies the admission control request according to the parameter information includes:

determining, according to the parameter information, the time that the channel is occupied when transmitting the first service flow;

Comparing the time occupied by the channel when transmitting the first service flow with the current free time of the channel to obtain a comparison result;

According to the comparison result, it is determined whether the current free time of the channel satisfies the admission control request.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, determining whether the current free time of the channel satisfies the admission control according to the comparison result requests, including:

When the comparison result is that the time occupied by the channel for transmitting the first service flow is less than or equal to the current free time of the channel, determine that the current free time of the channel satisfies the admission control request;

When the comparison result is that the time that the first service flow occupies the channel is longer than the current free time of the channel, it is determined that the current free time of the channel does not satisfy the admission control request.

With reference to any one of the second aspect to the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the resource request message further includes: transmitting the first Minimum physical layer rate for traffic flow.

With reference to any one of the second aspect to the second possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the method further includes: when establishing and the first After the scheduling rule corresponding to the service flow, the idle time of the channel is updated.

With reference to any one of the second aspect to the second possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the method further includes: when the admission control request is When the uplink admission control request is made, the indication information sent by the AC is received;

Send upstream classification information to the wireless station STA according to the indication information.

In a third aspect, the present invention provides a network admission control method, the method includes: determining to send a resource request message to an access point AP according to user subscription information and/or service authorization rules, wherein the resource request message includes an admission control request, and a first priority level corresponding to the first service flow, the admission control request includes parameter information, so that the AP can determine whether the current free time of the channel meets the admission requirement according to the parameter information control request, and establish a scheduling rule corresponding to the first service flow, where the first service flow is the service flow corresponding to the admission control request.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the determining to send a resource request message to the access point AP according to user subscription information and/or service authorization rules includes:

When it is determined to provide service quality assurance according to the user subscription information and/or the service authorization rule, the resource request message is sent to the AP.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the resource request message further includes: a minimum physical layer rate.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the admission control request is sent by the AP or a network side device.

With reference to the third possible implementation manner of the third aspect, in the fourth possible implementation manner of the third aspect, when the admission control request is sent by the network side device, and the admission control request is When an uplink admission control request is made, the method further includes: sending indication information to the AP, where the indication information is used for the AP to send the upstream classification information to the wireless station STA.

In a fourth aspect, the present invention provides an access controller, the access controller comprising: a processor and a transmitter;

The processor is configured to, when it is determined to accept the admission control request according to the user subscription information and/or the service authorization rule, establish a scheduling rule corresponding to a first service flow, wherein the first service flow is the admission control request. Request the corresponding business flow;

The transmitter is configured to send the scheduling rule established by the processor to the access point AP, so that the AP schedules the first service flow according to the scheduling rule.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the processor is specifically configured to:

When it is determined to provide service quality assurance according to the user subscription information and/or the service authorization rule, determining the time that the channel is occupied when transmitting the first service flow;

Comparing the time occupied by the channel when transmitting the first service flow with the current free time of the channel to obtain a comparison result;

According to the comparison result, it is determined to accept the admission control request.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the processor determines to accept the admission control request according to the comparison result, including:

The admission control request is accepted when the comparison result is that the time occupied by the transmission of the first service flow on the channel is less than or equal to the current free time of the channel.

With reference to the first possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, the processor determines to accept the admission control request according to the comparison result, including:

When the comparison result is that the time that the first service flow occupies the channel is longer than the current free time of the channel, it is determined that there is a second service flow, and the second priority level corresponding to the second service flow is lower than the the first priority level corresponding to the first service flow, and send first indication information to the AP, where the first indication information is used to indicate the time for the AP to release the channel occupied by the second service flow;

After receiving the confirmation information sent by the AP that the time of the channel occupied by the second service flow has been released, the admission control request is accepted.

With reference to the second possible implementation manner or the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the processor is further configured to, when establishing and the first After the scheduling rule corresponding to the service flow, the idle time of the channel is updated.

With reference to any one of the fourth aspect to the third possible implementation manner of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the admission control request is requested by the AP or the network side device send.

With reference to the fifth possible implementation manner of the fourth aspect, in the sixth possible implementation manner of the fourth aspect, when the admission control request is sent by the network side device, and the admission control request is When an uplink admission control request is made, the transmitter is further configured to: send second indication information to the AP, where the second indication information is used for the AP to send the upstream classification information to the wireless station STA.

In a fifth aspect, the present invention provides an access point, the access point comprising: a receiver and a processor;

The receiver is configured to receive a resource request message sent by the access controller AC, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow. Including parameter information, the first service flow is the service flow corresponding to the admission control request;

The processor is configured to, according to the parameter information, determine whether the current free time of the channel satisfies the admission control request;

When it is determined that the current free time of the channel satisfies the admission request, establishing a scheduling rule corresponding to the first service flow;

When it is determined that the current free time of the channel does not satisfy the admission control request, according to the first priority level, release the time occupied by the transmission of the current service flow on the channel so as to satisfy the admission control request, wherein the The priority level corresponding to the current service flow is lower than the first priority level.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processor is specifically configured to:

determining, according to the parameter information, the time that the channel is occupied when transmitting the first service flow;

Comparing the time occupied by the channel when transmitting the first service flow with the current free time of the channel to obtain a comparison result;

According to the comparison result, it is determined whether the current free time of the channel satisfies the admission control request.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the processor determines whether the current free time of the channel satisfies the criterion according to the comparison result. Access control requests, including:

When the comparison result is that the time occupied by the channel for transmitting the first service flow is less than or equal to the current free time of the channel, determine that the current free time of the channel satisfies the admission control request;

When the comparison result is that the time that the first service flow occupies the channel is longer than the current free time of the channel, it is determined that the current free time of the channel does not satisfy the admission control request.

With reference to any one of the fifth aspect to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the resource request message further includes: transmitting the first Minimum physical layer rate for traffic flow.

With reference to any one of the fifth aspect to the second possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the processor is further configured to: After a scheduling rule corresponding to a service flow, the idle time of the channel is updated.

With reference to any one of the fifth aspect to the second possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the access point further includes a transmitter, when the When the admission control request is an uplink admission control request,

The receiver receives the indication information sent by the AC;

The transmitter is configured to send upstream classification information to the wireless station STA according to the indication information.

In a sixth aspect, the present invention provides an access controller, the access controller comprising: a processor and a transmitter;

The processor is configured to, according to user subscription information and/or service authorization rules, determine to send a resource request message to the access point AP, wherein the resource request message includes an admission control request and a first service flow corresponding to the first service flow. A priority level, the admission control request includes parameter information, so that the AP determines whether the current idle time of the channel meets the admission control request according to the parameter information, and establishes a corresponding service flow corresponding to the first service flow. a scheduling rule, where the first service flow is a service flow corresponding to the admission control request;

The transmitter is configured to send a resource request message to the AP.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the processor is specifically configured to:

When it is determined to provide service quality assurance according to the user subscription information and/or the service authorization rule, the resource request message is sent to the AP.

With reference to the sixth aspect or the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the resource request message further includes: a minimum physical layer rate.

With reference to the sixth aspect, in a third possible implementation manner of the sixth aspect, the admission control request is sent by the AP or a network side device.

With reference to the third possible implementation manner of the sixth aspect, in the fourth possible implementation manner of the sixth aspect, when the admission control request is sent by the network side device, and the admission control request is When the uplink admission control request is made, the transmitter is further configured to: send indication information to the AP, where the indication information is used for the AP to send the upstream classification information to the wireless station STA.

Based on the above technical solutions, the embodiments of the present invention provide a network admission control method, access point, and access controller, which acquire user subscription information and/or service authorization rules through an AC, and obtain user subscription information and/or service authorization rules through an AC, and obtain user subscription information and/or service authorization rules according to the user subscription information or service authorization rules. When it is determined to accept the admission control request, the AP is instructed to establish a scheduling rule to schedule and transmit the service flow corresponding to the admission control request, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

Description of drawings

1 is a network structure diagram of a centralized control WLAN network in the prior art;

FIG. 2 is a schematic flow interaction diagram of a network admission control method 200 according to Embodiment 1 of the present invention;

FIG. 3 is a schematic flow interaction diagram of another network admission control method 300 according to Embodiment 2 of the present invention;

FIG. 4 is a schematic flowchart of a network admission control method 400 according to Embodiment 3 of the present invention;

FIG. 5 is a schematic flowchart interaction diagram of another network admission control method 500 according to Embodiment 5 of the present invention;

FIG. 6 is a schematic flow interaction diagram of another network admission control method 600 according to Embodiment 6 of the present invention;

FIG. 7 is a flowchart of another network admission control method 700 according to Embodiment 7 of the present invention;

FIG. 8 is a flowchart of another network admission control method 800 according to Embodiment 9 of the present invention;

FIG. 9 is a schematic structural diagram of an admission control apparatus according to Embodiment 10 of the present invention;

FIG. 10 is a schematic structural diagram of another admission control apparatus according to Embodiment 11 of the present invention;

11 is a schematic structural diagram of an admission control apparatus according to Embodiment 12 of the present invention;

FIG. 12 is a schematic structural diagram of an access controller according to Embodiment 13 of the present invention;

FIG. 13 is a schematic structural diagram of an access point according to Embodiment 14 of the present invention;

FIG. 14 is a schematic structural diagram of an access controller according to Embodiment 15 of the present invention.

Detailed ways

The technical solutions of the present invention will be further described in detail below through the accompanying drawings and embodiments.

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

FIG. 1 is a network structure diagram of a centralized control type WLAN network in the prior art. As shown in Figure 1, the network structure includes a wireless station (STA), an access controller (AC), an access point (AP), a gateway (Gateway) and a Deep Packet Inspection (DPI) device , and the application server (App Server). Among them, APs exist as forwarding plane devices and are responsible for encrypting, decrypting and forwarding packets; ACs are deployed centrally and exist as control plane devices, which are mainly responsible for completing control functions, including AP configuration and management, and completing user authentication and authorization, etc. Function and maintain user subscription information; Gateway realizes the connection between WLAN and external networks, such as the Internet. The DPI device can exist independently or be integrated in the Gateway. By in-depth analysis of the content of the packet data, it can locate the specific business type, and then provide management policy support; App Server provides various application services required by STA.

FIG. 2 is a schematic flow interaction diagram of a network admission control method 200 provided by Embodiment 1 of the present invention. As shown in FIG. 2, the method 200 includes:

210. The STA sends a first request message to the AP.

Specifically, the first request message sent by the STA to the AP carries the admission control request. If the first request message carries an admission control request for an upstream service flow, the admission control request may include a maximum delay requirement, a transmission rate, and a Media Access Control (MAC) layer data unit Maximum length; if the first request message carries an admission control request for a downlink service flow, the admission control request includes, in addition to the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit, the flow Classification parameter, this parameter contains classification information of downlink service flow.

220. The AP receives the first request message sent by the STA, and reports the first request message to the AC.

230. The AC receives the first request message sent by the AP, and determines to accept the admission control request carried by the first request message according to the user subscription information and/or the service authorization rule.

Specifically, the AC receives the admission control request carried in the first request message sent by the AP. And when receiving the first request message, determine whether to provide QOS guarantee for the first service flow corresponding to the admission control request carried by the first request message according to the user subscription information and/or service authorization rules, and when it is determined to be the service flow When providing QOS guarantee, according to the information in the admission control request (mainly according to the maximum delay requirement, transmission rate and the maximum length of the MAC layer data unit, etc.), calculate the time and scheduling period of the channel required to transmit the service flow.

The time of the AP channel occupied by the transmission of the first service flow is compared with the current free time of the channel to obtain a comparison result. Whether to accept the admission control request carried by the first request message is determined according to the comparison result.

For example, when the comparison result is that the time of the channel occupied by the transmission of the first service flow is less than or equal to the current free time of the channel, the admission control request is accepted.

When the above comparison result is: the time of the channel occupied by the transmission of the first service flow is obviously longer than the current free time of the AP channel. At this time, the AC first determines whether there is a second service flow, and determines that the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow, and if so, sends the first indication information to the AP , the first indication information is used to instruct the AP to release the channel time occupied by the second service flow; after receiving the confirmation information sent by the AP that the time of the channel occupied by the second service flow has been released, accept the admission corresponding to the first service flow control request.

It should be understood that the second priority level corresponding to the second service flow described above is actually the priority level corresponding to the scheduling rule established by the AC according to the second service flow, and the priority level is stored in the AC since the scheduling rule is established. of.

Further, the above-mentioned determination of the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow, specifically, it should be determined that the priority level of the scheduling rule corresponding to the second service flow is low. at the first priority level.

In addition, it should be noted that the obtained first priority level is the first comprehensive priority level, which is obtained after determining to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules.

The specific process of obtaining the first comprehensive priority is as follows:

According to the service authorization rule, the priority relationship corresponding to different service flows can be determined; according to the user subscription information, the priority relationship corresponding to the subscribed user can be determined.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

In a specific example, the first service stream is a video stream, the transmission rate is 2Mb/s, the maximum delay requirement is 20ms, the maximum length of the MAC layer data unit is 1000 bytes, and the maximum transmission rate of the physical layer at this time is is 50Mb/s, the AC can calculate the time for each occupied channel to transmit the service flow as:

The scheduling period of the service flow is 20ms, that is, the AC can instruct the AP to schedule the service flow every 20ms, and transmit the service flow in 0.8ms. The packet size of each transmission is:

0.8ms×50Mb/s＝4000(byte) (Formula 2-2)

At this time, if the current free time of the AP channel in each scheduling period is 4ms, that is, the time occupied by the channel for transmitting the first service flow is less than the current free time of the AP channel, the admission control request corresponding to the service flow can be accepted. .

If the current idle time of the AP channel is 0.5ms, the AC first determines whether there is a second service flow, and determines that the priority level of the scheduling rule corresponding to the second service flow is lower than the first priority level corresponding to the first service flow For example, when it is determined that the second service flow exists and is a voice service flow, the first indication information is sent to the AP, and the first indication information is used to indicate the time for the AP to release the channel occupied by the voice service flow, and receive the released information sent by the AP. After the confirmation of the time of the channel occupied by the voice service flow, the admission control request corresponding to the video flow is accepted.

240. When the AC determines to accept the service access control request corresponding to the first request message, establish a scheduling rule corresponding to the first service flow.

Specifically, when the AC determines to accept the service access control corresponding to the first request message, it establishes a scheduling rule corresponding to the first service flow, wherein the first service flow is the service flow corresponding to the access control request. In the scheduling rule, the scheduling period and the time allocated for each scheduling may be included.

Optionally, the scheduling rule may further include a scheduling start time.

In addition, when the AC determines to accept the admission control request corresponding to the first request message, it also needs to determine the information of the user equipment corresponding to the scheduling rule, so that the AP can provide the user equipment for the user equipment in each scheduling period according to the information of the user equipment. Allocate the sending time of the upstream service flow, and send the sending time to the user equipment; or, determine the information of the downstream service flow corresponding to the scheduling rule, so that the AP provides the downstream service flow information for the downstream service flow in each scheduling period according to the information of the downstream service flow. The service flow allocates the sending time, and sends the downlink service flow to the user equipment that determines to download the downlink service flow.

250. The AC sends the scheduling rule to the AP, so that the AP can schedule the service flow according to the scheduling rule.

260. The AP receives the scheduling rule sent by the AC.

270. The AC sends a response message corresponding to the first request message to the AP.

Optionally, the response message may include the scheduling start time and the scheduling period.

280. The AP receives the response message sent by the AC, and forwards the response message to the STA.

It should be understood that the AC sending the scheduling rule to the AP in step 250 and the AC sending the response message corresponding to the first request message to the AP in step 270 can also be completed in only one step. Similarly, on this basis, steps 260 and 260 and Step 280 can also be completed in one step. The specific process is similar and will not be repeated here.

It should also be understood that the subsequent scheduling processing of the upstream service flow or the downstream service flow by the AP according to the scheduling rule, and the STA uploading or downloading the service flow are equivalent to the prior art, and details are not repeated here.

It should also be understood that, before step 210, the method may further include: step 205, the AC generates a forwarding principle for configuring the AP.

Specifically, the AC generates and configures the forwarding principle of the AP. When the AP receives the request message sent by the STA is some specific message, it needs to directly report it to the AC for processing according to the forwarding principle configured by the AC. For the first request message, when the AP receives the request message, it will directly report it to the AC, while other non-specific messages are handled by the AP itself.

Alternatively, the AP may directly report certain messages received to the AC for processing according to its own default principles.

Further, after step 240, it can also include step 245, when the scheduling rule corresponding to the first service flow is established, the AC updates the free time of the channel, so that the AC can process other control request information according to the free time of the channel, so as to improve work efficiency. .

It should be noted that the free time of the AC update channel mentioned in step 245 refers to: after it is determined that the admission control request is accepted, a scheduling rule corresponding to the first service flow is established, and the AC has already allocated the time to transmit the first service flow. After the required channel time, the current remaining idle time of the channel is updated.

According to the network admission control method provided by the first embodiment of the present invention, the AC determines to accept the admission control request carried in the first request message according to user subscription information and/or service authorization rules. Establish a scheduling rule, and send the scheduling rule to the AP, so that the AP can schedule and transmit the service flow corresponding to the admission control request; and when the AP channel resources are insufficient, the AC can also instruct the AP to release low-priority services. The channel time occupied by the flow is prioritized to ensure the quality of service of the high-priority service flow, thereby avoiding the abuse of WLAN network resources by unauthorized users or services.

FIG. 3 is a schematic flow interaction diagram of another network admission control method 300 according to Embodiment 2 of the present invention. As shown in FIG. 3, the method 300 includes:

310. The AC receives a first request message from a network-side device, where the network-side device may include a DPI device or an App Server.

320. Determine to accept the admission control request carried by the first request message according to the user subscription information and/or the service authorization rule.

Specifically, when the AC receives the first request message, it determines whether to provide QOS guarantee for the first service flow corresponding to the admission control request according to user subscription information and/or service authorization rules, and when it determines to provide QOS for the service flow When guaranteeing, according to the information in the admission control request (mainly according to the maximum delay requirement, transmission rate and the maximum length of the MAC layer data unit, etc.), calculate the time and scheduling period of the channel required to transmit the service flow. The time of the AP channel occupied by the transmission of the first service flow is compared with the current free time of the channel to obtain a comparison result. Whether to accept the admission control request carried by the first request message is determined according to the comparison result.

For example, when the comparison result is that the time of the channel occupied by the transmission of the first service flow is less than or equal to the current free time of the channel, the admission control request is accepted.

When the above comparison result is: the time of the channel occupied by the transmission of the first service flow is obviously longer than the current free time of the AP channel. At this time, the AC first determines whether there is a second service flow, and determines that the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow. If it exists, send first indication information to the AP, where the first indication information is used to instruct the AP to release the channel time occupied by the second service flow; receive confirmation information sent by the AP that the channel occupied by the second service flow has been released Then, the admission control request corresponding to the first service flow is accepted.

It should be understood that the second priority level corresponding to the second service flow described above is actually the priority level corresponding to the scheduling rule established by the AC according to the second service flow. Further, the above-mentioned determination of the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow, specifically, it should be determined that the priority level of the scheduling rule corresponding to the second service flow is low. at the first priority level.

In addition, it should be noted that the obtained first priority level is the first comprehensive priority level, which is obtained after determining to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of obtaining the first comprehensive priority is as follows:

According to the service authorization rule, the priority relationship corresponding to different service flows can be determined; according to the user subscription information, the priority relationship corresponding to the subscribed user can be determined.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

In a specific example, the first service stream is a video stream, the transmission rate is 2Mb/s, the maximum delay requirement is 20ms, the maximum length of the MAC layer data unit is 1000 bytes, and the maximum transmission rate of the physical layer at this time is is 50Mb/s, the AC can calculate the time for each occupied channel to transmit the service flow as:

The scheduling period of the service flow is 20ms, that is, the AC can instruct the AP to schedule the service flow every 20ms, and transmit the service flow in 0.8ms. The packet size of each transmission is:

0.8ms×50Mb/s=4000(byte) (Formula 3-2)

At this time, if the current free time of the AP channel in each scheduling period is 4ms, that is, the time occupied by the channel for transmitting the first service flow is less than the current free time of the AP channel, the admission control request corresponding to the service flow can be accepted. .

If the current idle time of the AP channel is 0.5ms, the AC first determines whether there is a second service flow, and determines that the priority level of the scheduling rule corresponding to the second service flow is lower than the first priority level corresponding to the first service flow For example, when it is determined that the second service flow exists and is a voice service flow, the first indication information is sent to the AP, and the first indication information is used to indicate the time for the AP to release the channel occupied by the voice service flow, and receive the released information sent by the AP. After the confirmation of the time of the channel occupied by the voice service flow, the admission control request corresponding to the video flow is accepted.

The implementations of steps 330 to 350 are similar to the implementations of steps 240 to 260 in FIG. 2 above, and are not repeated here for the sake of brevity of description.

It should be noted that the STA downloads the downlink service flow, and when the admission control request carried by the first request message is the downlink admission control request, the AP processes the downlink service flow according to the scheduling rule, which is the same as the prior art. I won't go into details here.

When the admission control request carried by the first request message is an uplink admission control request, after step 340, the method further includes 345, the AC sends second indication information to the AP, and the indication information is used by the AP to send the wireless station STA Send upstream classification information.

After step 350, the method further includes 360, the AP receives the second indication information, and sends the upstream classification information to the wireless station STA according to the indication information.

Specifically, the AP sends a CF_POLL frame to the STA at the time when the scheduling of the upstream service flow starts, and the CF_POLL frame carries the classification information of the upstream service flow, so that the STA can determine the upstream service transmitted at the corresponding channel time according to the classification information. flow, and according to the instruction of the CF_POLL frame, send the upstream service flow at the specified time.

It should be understood that, in Embodiment 1 of the present invention, since the first request message is initiated by the STA, the STA has already determined which upstream service flows require QOS guarantee, so at the time when the scheduling of the upstream service flow starts, the AP does not need to The upstream classification information is included in the CF_POLL frame sent to the STA.

In a network admission control method provided by Embodiment 2 of the present invention, the AC determines to accept the admission control request carried in the first request message from the network side device according to user subscription information and/or service authorization rules, and then establishes a scheduling rule , and send the scheduling rule to the AP, so that the AP can schedule and transmit the first service flow according to the scheduling rule; the AC can also indicate the channel time occupied by the low-priority service flow released by the AP to ensure the high-priority service. Streaming service quality, thus avoiding the abuse of WLAN network resources by unauthorized users or services. In addition, the AC can also obtain the admission control request carried by the first request message through the network-side device, which solves the problem that the admission control is completely dependent on the initiation of the STA and causes too strong constraints.

FIG. 4 is a schematic flowchart of a network admission control method 400 according to Embodiment 3 of the present invention. The method 400 shown in FIG. 4 may be executed by an AC, and the method 400 includes:

410, when the access controller AC determines to accept the admission control request according to the user subscription information and/or the service authorization rule, establish a scheduling rule corresponding to the first service flow.

Specifically, the AC determines whether to provide QOS guarantee for the first service flow corresponding to the admission control request according to user subscription information and/or service authorization rules, and when determining to provide QOS guarantee, determines the number of channels occupied when transmitting the first service flow. time, wherein the admission control request is carried in the first request message received by the AC.

The time occupied by the channel when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result. According to the comparison result, it is determined to accept the admission control request.

For example, when the comparison result is that the time that the first service flow occupies the channel is less than or equal to the current free time of the channel, the admission control request is accepted.

When the comparison result described above is that the time that the first service flow occupies the channel is longer than the current free time of the channel, the AC first determines whether there is a second service flow, and determines the second priority corresponding to the second service flow. The level is lower than the first priority level corresponding to the first service flow. If it exists, the first indication information is sent to the AP. The first indication information is used to indicate the time for the AP to release the channel occupied by the second service flow; After confirming the time of the channel occupied by the second service flow, the admission control request is accepted.

It should be understood that the second priority level corresponding to the second service flow described above is actually the priority level corresponding to the scheduling rule established by the AC according to the second service flow. Further, the above-mentioned determination of the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow, specifically, it should be determined that the priority level of the scheduling rule corresponding to the second service flow is low. at the first priority level.

In addition, it should be noted that the obtained first priority level is the first comprehensive priority level, which is obtained after determining to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of obtaining the first comprehensive priority is as follows:

According to the service authorization rule, the priority relationship corresponding to different service flows can be determined; according to the user subscription information, the priority relationship corresponding to the subscribed user can be determined.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Specifically, when it is determined to accept the admission control request, a scheduling rule corresponding to the first service flow is established. The scheduling rule may include the scheduling period and the time allocated for each scheduling.

Optionally, the scheduling rule may further include a scheduling start time.

In addition, when the AC determines to accept the admission control request, it also needs to determine the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment. , and send the sending time to the user equipment; or, determine the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and The downlink service stream is sent to the user equipment that determines to download the downlink service stream.

420. Send the scheduling rule to the AP, so that the AP can schedule the service flow according to the scheduling rule.

It should be noted that the admission control request may be sent by the AP or the network side device.

It should be understood that, according to step 410, the admission control request is carried in the first request message, that is, the first request message sent by the AP or the network side device, and the admission control request is carried in the request message.

Therefore, in step 410, if the AC receives the first request message sent by the AP, before step 410, the method may further include: step 405, the AC generates and configures the forwarding principle of the AP, when the AP receives the request message as For some specific messages, according to the forwarding principle configured by the AC, they need to be directly reported to the AC for processing. For example, for the first request message in this embodiment, when the AP receives the request message, it will be directly reported to the AC, while other messages are directly reported to the AC. Non-specific messages are handled by the AP itself.

Alternatively, the AP may directly report certain messages received to the AC for processing according to its own default principles.

In step 410, if the AC receives the first request message sent by the network side device, and the admission control request carried by the first request message is an uplink admission control request, after step 420, the method can also Including: 430: Send second indication information to the AP, where the second indication information is used for the AP to send upstream classification information to the wireless station STA, and the specific flowchart is shown in FIG. 4 .

It should be understood that the existence of step 405 and step 430 is determined according to the source of the first request message received by the AC, and there can only be one of the two cases. Although both are shown in FIG. occur simultaneously.

Therefore, in a network access control method provided by the third embodiment of the present invention, the AC determines whether to provide service quality assurance according to user subscription information and/or service authorization rules, and determines whether to accept the authorization under the premise of determining that service quality assurance is provided. access control request. When it is determined to accept the admission control request, the AP is instructed to establish a scheduling rule, thereby preventing WLAN network resources from being abused by unauthorized users or services.

As another embodiment of the present invention (Embodiment 4), as shown in FIG. 4, after step 410, the method may further include: step 415, after the scheduling rule corresponding to the first service flow is established, update the channel of spare time. In this way, the AC can process other admission control requests according to the free time of the channel, thereby improving work efficiency. Other steps are the same as those in the third embodiment, and are not repeated here.

It should be noted that the free time for updating the channel mentioned in step 415 refers to: after the AC determines to accept the admission control request, it establishes a scheduling rule corresponding to the first service flow, and the AC has already allocated the transmission of the first service flow. After the required channel time, update the current remaining idle time of the channel.

FIG. 5 is a schematic flow interaction diagram of another network admission control method 500 according to Embodiment 5 of the present invention. As shown in Figure 5, the specific execution steps of the main network elements in the network structure are as follows:

510. The STA sends a first request message to the AP.

Specifically, the first request message carries an admission control request. If the first request message carries an admission control request for an upstream service flow, the admission control request may include the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit; It carries an admission control request for downlink service flow. In addition to the maximum delay requirement, the transmission rate, and the maximum length of the MAC layer data unit, the admission control request also includes a flow classification parameter, which includes the downlink service flow. classification information.

520, the AP receives the first request message sent by the STA, and reports the first request message to the AC;

530. The AC receives the first request message sent by the AP, and determines to send the resource request message to the AP according to the user subscription information and/or the service authorization rule.

Specifically, whether to provide QoS guarantee is determined according to user subscription information and/or service authorization rules, because only subscribed users or specific service flows can obtain QoS guarantee. Therefore, when the AC receives the first request message, it needs to determine whether to provide service quality assurance. Whether the service flow corresponding to the admission control request carried by the first request message complies with the user subscription information and/or service authorization rules, that is, whether it is necessary to provide service quality assurance, when it is determined to provide service quality assurance, send a resource request to the AP message; otherwise, do not send a resource request message, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow, the admission control request includes parameter information, and the first service flow is the service flow corresponding to the admission control request.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit. So that the AP can determine whether the current free time of the channel satisfies the admission control request according to the parameter information, and establish the scheduling rule corresponding to the first service flow when the current free time of the channel satisfies the admission control request. A traffic flow is a traffic flow corresponding to an admission control request.

The obtained first priority level is the first comprehensive priority level, which is obtained after the AC determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules.

The specific process of obtaining the first comprehensive priority is as follows:

The AC can determine the priority relationship corresponding to different service flows according to the service authorization rules; and can determine the priority relationship corresponding to the subscribed users according to the user subscription information.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may further include the minimum physical layer rate for transmitting the service flow. The purpose is that when the user supports multiple physical layer rates, when calculating the channel time required for transmitting the first service flow, if the calculation is based on the lowest physical layer rate, it can be guaranteed that in the worst channel condition, it can still be guaranteed. Quality of service for this traffic flow.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, in order to enable the AP to establish a scheduling rule within a specified time, for example, to establish a scheduling corresponding to the service flow within 50ms. rule.

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and assigns the sending time to the user equipment. Send to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow to the downloader User equipment of downlink traffic flow.

540. The AP receives the resource request message sent by the AC.

Specifically, the content included in the resource request message is the same as that described in step 530, which is not repeated here for the sake of brevity of description.

550. The AP determines whether the current free time of the channel meets the admission control request according to the parameter information.

Specifically, the AP determines the time and scheduling period of the channel occupied when transmitting the first service flow according to the parameter information described above (mainly according to the maximum delay requirement, transmission rate and maximum length of the MAC layer data unit in the parameter information). The time of the AP channel occupied when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result. According to the comparison result, it is determined whether the current free time of the AP channel satisfies the admission control request.

For example, when the comparison result is that the time occupied by the transmission of the first service flow on the channel is less than or equal to the current free time of the channel, it may be determined that the current free time of the channel satisfies the admission control request.

When the comparison result is that the time that the first service flow occupies the channel is greater than the current free time of the channel, it is determined that the current free time of the channel does not satisfy the admission control request, and the AP will release the channel occupied by the current service flow for transmission time, so as to satisfy the requirement of the admission control request, wherein the priority level corresponding to the current service flow is lower than the first priority level.

It should be noted that the current service flow is the service flow that currently occupies the channel time in the AP, and the priority level corresponding to the service flow can be considered as the priority level of the scheduling rule established by the AP according to the service flow, and the priority level of the scheduling rule is the priority level of the scheduling rule. The level has been stored in the AP, and the priority level corresponding to the scheduling rule is lower than the priority level corresponding to the first service flow.

For example: in a specific example, the first service stream is a video stream, the transmission rate is 2Mb/s, the maximum delay requirement is 20ms, the maximum length of the MAC layer data unit is 1000 bytes, and the maximum length of the physical layer is at this time. The transmission rate is 50Mb/s, and the AC can calculate the time for each occupied channel to transmit the service flow as:

The scheduling period of the service flow is 20ms, that is, the AC can instruct the AP to schedule the service flow every 20ms, and transmit the service flow in 0.8ms. The packet size of each transmission is:

0.8ms×50Mb/s＝4000(byte) (Formula 5-2)

At this time, if the current free time of the AP channel in each cycle is 4ms, that is, the time occupied by the channel for transmitting the first service flow is less than the current free time of the AP channel, that is, it can be determined that the current free time of the channel satisfies the admission control request .

If the current free time of the AP channel is 0.5ms, that is, when the current free time of the channel cannot meet the admission control request, the AP will release the channel time occupied by transmitting the voice service flow currently occupying the AP channel, so as to satisfy the video flow The corresponding admission control request, wherein the priority level of the scheduling rule corresponding to the voice service flow is lower than the priority level corresponding to the video flow.

560. When the AP determines that the current free time of the channel meets the admission control request, establish a scheduling rule corresponding to the first service flow.

Specifically, when the AP determines that the current free time of the channel satisfies the admission control request, it establishes a scheduling rule corresponding to the first service flow, so as to schedule the service flow. Wherein, the scheduling rule may include a scheduling period and time allocated for each scheduling.

Optionally, the scheduling rule may further include a scheduling start time.

570. The AP sends the response information to the AC.

Specifically, after the AP establishes the scheduling rule corresponding to the first service flow, it can send response information to the AC. Optionally, the response information may include a scheduling start time and a scheduling period.

Further optionally, the scheduling start time included in the response information needs to meet the time constraint for transmitting the first service flow introduced in step 540 . If the parameter information in step 540 does not include the time constraint, the AP can also determine the scheduling start time by itself.

580. The AC sends a response message corresponding to the first request message to the AP.

Specifically, the response message sent by the AC to the AP may include the scheduling start time and the scheduling period, so that the AP forwards the response message to the STA.

It should be understood that the subsequent scheduling processing of the upstream service flow or the downstream service flow by the AP according to the scheduling rule, and the STA uploading or downloading the service flow are equivalent to the prior art, and details are not repeated here.

It should also be understood that, before step 510, the method may further include: step 505, the AC generates a forwarding principle for configuring the AP.

Specifically, the AC generates and configures the forwarding principle of the AP. When the AP receives the request message sent by the STA for some specific message, it needs to report it directly to the AC for processing according to the forwarding principle configured by the AC. When a request message is received, the AP will directly report it to the AC, while other non-specific messages are handled by the AP itself.

Alternatively, the AP may directly report certain messages received to the AC for processing according to its own default principles.

Further, after step 560, it can also include step 565, when the scheduling rule corresponding to the first service flow is established, the AP updates the free time of the channel, so that the AP can process other control request information according to the free time of the channel to improve work efficiency. .

It should be noted that the free time for the AP to update the channel mentioned in step 565 refers to: after establishing the scheduling rule corresponding to the first service flow and assigning the channel time required for transmitting the first service flow, update the current channel remaining free time.

It should be understood that the subsequent scheduling processing of the upstream service flow or the downstream service flow by the AP according to the scheduling rule, and the STA uploading or downloading the service flow are equivalent to the prior art, and details are not repeated here.

In the network admission control method provided by the fifth embodiment of the present invention, the AC determines to provide service quality assurance according to user subscription information and/or service authorization rules, and sends a resource request message to the AP, where the resource request message includes an admission control request, and The first priority level corresponding to the first service flow. According to the parameter information in the admission control request, when the AP determines that the current free time of the channel meets the admission control request, it establishes a scheduling rule. When the free time of the current channel is insufficient, the AP can also release the current low-priority service flow. The occupied channel time is used to ensure the service quality of the high-priority service flow, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

FIG. 6 is a schematic flowchart interaction diagram of another network admission control method 600 provided by Embodiment 6 of the present invention. As shown in FIG. 6, the method 600 includes:

610. The AC receives the first request message from a network-side device, where the network-side device may include a DPI device or an App Server.

620. Determine to send a resource request message to the AP according to the user subscription information and/or the service authorization rule.

Specifically, whether to provide QoS guarantee is determined according to user subscription information and/or service authorization rules, because only subscribed users or specific service flows can obtain QoS guarantee. Therefore, when the AC receives the first request message, it needs to determine whether to provide service quality assurance. Whether the service flow corresponding to the admission control request carried by the first request message complies with the user subscription information and/or service authorization rules, that is, whether it is necessary to provide service quality assurance, when it is determined to provide service quality assurance, send a resource request to the AP message; otherwise, do not send a resource request message, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow, the admission control request includes parameter information, and the first service flow is the service flow corresponding to the admission control request.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit. So that the AP can determine whether the current free time of the channel satisfies the admission control request according to the parameter information, and establish the scheduling rule corresponding to the first service flow when the current free time of the channel satisfies the admission control request. A traffic flow is a traffic flow corresponding to an admission control request. The obtained first priority level is the first comprehensive priority level, which is obtained after the AC determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of obtaining the first comprehensive priority is as follows:

The AC can determine the priority relationship corresponding to different service flows according to the service authorization rules; and can determine the priority relationship corresponding to the subscribed users according to the user subscription information.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may further include a minimum physical layer rate for transmitting the first service flow. The purpose is that when the user supports multiple physical layer rates, when calculating the channel time required for transmitting the first service flow, if the calculation is based on the lowest physical layer rate, it can be guaranteed that in the worst channel condition, it can still be guaranteed. Quality of service for this traffic flow.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, the purpose is to enable the AP to establish a scheduling rule within a specified time, for example, within 50ms to establish a scheduling rule corresponding to the service flow. .

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and assigns the sending time to the user equipment. Send to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow to the downloader User equipment of downlink traffic flow.

Steps 630 to 660 are similar to the implementations of steps 540 to 570 in the foregoing embodiment, and are not repeated here.

It should be noted that the STA downloads the downlink service flow, and when the admission control request carried by the first request message is the downlink admission control request, the downlink service flow is processed according to the scheduling rule according to the scheduling rule, which is the same as the prior art, here No longer.

When the admission control request carried by the first request message is an uplink admission control request, after step 660, the method further includes 670, the AC sends indication information to the AP, where the indication information is used for the AP to send the uplink to the wireless station STA Flow classification information.

And in step 680, the AP receives the indication information and sends the upstream classification information to the STA.

Specifically, when the admission control request carried by the first request message is an uplink admission control request, the AP carries the classification information of the upstream service flow to the ST in the CF_POLL frame at the time when the scheduling of the upstream service flow starts, so that the STA can The classification information determines the upstream service flow transmitted at the corresponding channel time, and sends the upstream service flow at the specified time according to the indication of the CF_POLL frame.

It should be understood that, in Embodiment 5 of the present invention, since the first request message is initiated by the STA, the STA has already determined which upstream service flows require QoS guarantee, so at the time when the scheduling of the upstream service flow starts, the AP does not need to The upstream classification information is included in the CF_POLL frame sent to the STA.

In a network admission control method provided in Embodiment 6 of the present invention, the AC determines to provide service quality assurance according to user subscription information or service authorization rules, and sends a resource request message to the AP, where the resource request message includes an admission control request, and The first priority level corresponding to the first service flow. According to the parameter information in the admission control request, when the AP determines that the current free time of the channel satisfies the admission control request, it establishes a scheduling rule. If the current free channel time is insufficient, the AP can also release the current low-priority traffic flow The occupied channel time is used to ensure the service quality of the high-priority service flow, thereby preventing the WLAN network resources from being abused by unauthorized users or services. In addition, the AC can also obtain the admission control request carried by the first request message through the network-side device, which solves the problem of excessive constraints caused by the admission control being completely dependent on STA initiation.

FIG. 7 is a flowchart of another network admission control method 700 according to Embodiment 7 of the present invention. The method shown in FIG. 7 may be executed by an AP, and the method 700 includes:

710. The access point AP receives the resource request message sent by the access controller AC.

Specifically, the AP receives a resource request message sent by the AC, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow, wherein the admission control request includes parameter information, and the first service flow is the traffic flow corresponding to the admission control request.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit. In order to determine whether the current free time of the channel satisfies the admission control request according to the parameter information.

The obtained first priority level is the first comprehensive priority level, which is obtained after the AC determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules.

The specific process of obtaining the first comprehensive priority is as follows:

The AC can determine the priority relationship corresponding to different service flows according to the service authorization rules; and can determine the priority relationship corresponding to the subscribed users according to the user subscription information.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may also include the minimum physical layer rate for transmitting the first service flow, so as to calculate the time for the channel required for transmitting the first service flow when the user supports multiple physical layer rates. , if it is calculated according to the lowest physical layer rate, it can be guaranteed that the service quality of the service flow can still be guaranteed under the worst channel condition.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, the purpose is to enable the AP to establish a scheduling rule within a specified time, for example, within 50ms to establish a scheduling rule corresponding to the service flow. .

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and assigns the sending time to the user equipment. Send to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow to the downloader User equipment of downlink traffic flow.

720. Determine whether the current idle time of the channel satisfies the admission control request according to the parameter information.

Specifically, the AP determines the time and scheduling period of the channel occupied when transmitting the first service flow according to the parameter information described above (mainly according to the maximum delay requirement, transmission rate and maximum length of the MAC layer data unit in the parameter information). The time of the channel occupied when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result. According to the comparison result, it is determined whether the current free time of the AP channel satisfies the admission control request.

730. When it is determined that the current free time of the channel satisfies the admission request, establish a scheduling rule corresponding to the first service flow.

Specifically, when the comparison result is that the time occupied by the channel for transmitting the first service flow is less than or equal to the current free time of the channel, it can be determined that the current free time of the channel meets the requirement of the admission control request. Then, a scheduling rule corresponding to the first service flow is established, so as to schedule the service flow.

740. When it is determined that the current free time of the channel does not satisfy the admission control request, release the time occupied by the channel for transmitting the current service flow according to the first priority level.

Specifically, when the comparison result is that the time that the first service flow occupies the channel is longer than the current free time of the channel, the AP will release the channel time occupied by the current service flow according to the first priority level, so as to meet the requirements of the admission control request. requirements, wherein the priority level corresponding to the current service flow is lower than the first priority level.

It should be noted that the current service flow is the service flow that currently occupies the channel time in the AP, and the priority level corresponding to the service flow can be considered as the priority level of the scheduling rule established by the AP according to the service flow, and the priority level of the scheduling rule is the priority level of the scheduling rule. The level is already stored in the AP.

It should be noted that, when the admission control request is an uplink admission control request, the method further includes: 750: Receive indication information sent by the AC; and send upstream classification information to the wireless station STA according to the indication information.

Specifically, the AP sends a CF_POLL frame to the STA at the time when the scheduling of the upstream service flow starts, and the CF_POLL frame carries the classification information of the upstream service flow, so that the STA can determine the upstream service transmitted at the corresponding channel time according to the classification information. flow, and according to the instruction of the CF_POLL frame, send the upstream service flow at the specified time.

In the network admission control method provided by the seventh embodiment of the present invention, by receiving a resource request message sent by an AC, the resource request message includes an admission control request and a first priority level corresponding to the first service flow, and according to the criterion When the parameter information in the admission control request determines that the current free time of the channel meets the admission control request, a scheduling rule is established to schedule and transmit the service flow corresponding to the admission control request; if the current channel time is insufficient, the AP can also release the current The channel time occupied by the low-priority service flow ensures the service quality of the high-priority service flow, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

As another embodiment of the present invention (the eighth embodiment), as shown in FIG. 7, after step 740, the method may further include: step 745, after establishing the scheduling rule corresponding to the first service flow, the AP updates The free time of the channel, so that other admission control requests can be processed according to the free time of the channel, thereby improving work efficiency. The other steps are the same as those in the seventh embodiment, and are not repeated here.

It should be noted that the free time for the AP to update the channel mentioned in step 745 refers to: after establishing the scheduling rule corresponding to the first service flow and assigning the channel time required for transmitting the first service flow, update the current channel remaining free time.

FIG. 8 is a flowchart of another network admission control method 800 according to Embodiment 9 of the present invention. As shown in FIG. 8 , the method 800 may be executed by an AC:

810. The access controller AC determines to send a resource request message to the access point AP according to the user subscription information and/or the service authorization rule.

Specifically, the AC determines whether to provide service quality assurance for the first service flow corresponding to the admission control request according to the user subscription information and/or service authorization rules, because only subscribed users or specific service flows can obtain service quality assurance. Therefore, the AC needs to determine whether the service flow corresponding to the admission control request conforms to the user subscription information and/or service authorization rules, that is, whether it is necessary to provide service quality assurance, and when it is determined to provide service quality assurance, it sends a resource request message to the AP; Otherwise, the resource request message is not sent, wherein the resource request message includes an admission control request and a first priority level corresponding to the first service flow, wherein the admission control request includes parameter information.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit, so that the AP can determine whether the current free time of the channel meets the admission control request according to the parameter information, and establish a schedule corresponding to the first service flow rule, wherein the first service flow is the service flow corresponding to the admission control request.

It should be noted that the obtained first priority level is the first comprehensive priority level, which is obtained after the AC determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of generating the first comprehensive priority is as follows:

The AC can determine the priority relationship corresponding to different service flows according to the service authorization rules; and can determine the priority relationship corresponding to the subscribed users according to the user subscription information.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may further include the minimum physical layer rate for transmitting the service flow. The purpose is that when the user supports multiple physical layer rates, when calculating the channel time required for transmitting the first service flow, if the calculation is based on the lowest physical layer rate, it can be guaranteed that in the worst channel condition, it can still be guaranteed. Quality of service for this traffic flow.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, the purpose is to enable the AP to establish a scheduling rule within a specified time, for example, within 50ms to establish a scheduling rule corresponding to the service flow. .

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and assigns the sending time to the user equipment. Send to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow to the downloader User equipment of downlink traffic flow.

Further, the admission control request is sent by the AP or the network side device.

It should be understood that the admission control request is actually carried in the first request message received by the AC. That is, what the AC actually receives is the first request message sent by the AP or the first request message sent by the network side device, and the request message carries the admission control request.

Therefore, if the AC receives the first request message sent by the AP, before step 810, the method may further include: step 805, the AC generates and configures the forwarding principle of the AP. When the request message received by the AP is some specific message, according to the forwarding principle configured by the AC, it needs to be directly reported to the AC for processing. For example, the first request message in this embodiment, when the AP receives the request message, It will be directly reported to the AC, while other non-specific messages are handled by the AP itself.

Alternatively, the AP may directly report certain messages received to the AC for processing according to its own default principles.

In step 810, if the AC receives the first request message sent by the network-side device, and the admission control request carried by the first request message is an uplink admission control request, the method may further include: 820, sending The AP sends the indication information, and the indication information is used for the AP to send the upstream classification information to the wireless station STA, and the specific process is shown in FIG. 8 .

It should be understood that the existence of step 805 and step 820 is determined according to the source of the first request message received by the AC, and there can only be one of the two cases, although both are shown in FIG. occur simultaneously.

In a network admission control method provided by Embodiment 9 of the present invention, the AC determines to provide service quality assurance according to user subscription information and/or service authorization rules, and sends a resource request message to the AP, where the resource request message includes an admission control request , and the first priority level corresponding to the first service flow, so that the AP can determine that the current free time of the channel satisfies the admission control request according to the parameter information in the admission control request, and establish a scheduling rule corresponding to the first service flow , thereby preventing the WLAN network resources from being abused by unauthorized users or services.

FIG. 9 is a schematic structural diagram of an admission control apparatus according to Embodiment 10 of the present invention. The apparatus is mainly aimed at an access controller AC. As shown in FIG. 9 , the admission control apparatus includes: a processing unit 901 and a Sending unit 902 .

The processing unit 901 is configured to establish a scheduling rule corresponding to the first service flow when it is determined to accept the admission control request according to the user subscription information and/or the service authorization rule. Specifically, the processing unit 901 determines whether to provide QOS guarantee for the first service flow corresponding to the admission control request according to user subscription information and/or service authorization rules, and when determining to provide QOS guarantee, determines to occupy the first service flow when transmitting the first service flow. channel time.

The time occupied by the channel when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result, and according to the comparison result, it is determined to accept the admission control request.

For example, when the comparison result is that the time that the first service flow occupies the channel is less than or equal to the current free time of the channel, the admission control request is accepted.

When the comparison result described above is that the time that the first service flow occupies the channel is longer than the current free time of the channel, the processing unit 901 first determines whether there is a second service flow, and determines the first service flow corresponding to the second service flow. The second priority level is lower than the first priority level corresponding to the first service flow. If it exists, the sending unit 902 is used to send first indication information to the AP, where the first indication information is used to indicate the time for the AP to release the channel occupied by the second service flow .

Optionally, the device may further include a receiving unit 903, which is configured to send the confirmation information to the processing unit 901 after receiving the confirmation information sent by the AP that the channel occupied by the second service flow has been released, and the processing unit 901 will then send the confirmation information to the processing unit 901. According to the confirmation information, the admission control request is accepted.

It should be understood that the second priority level corresponding to the second service flow described above is actually the priority level corresponding to the scheduling rule established by the processing unit 901 according to the second service flow. Further, the processing unit 901 described above determines that the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow, specifically, it should determine the scheduling rule corresponding to the second service flow. The priority level is lower than the first priority level.

In addition, it should be noted that the first priority level obtained above is the first comprehensive priority level, which is obtained after the processing unit 901 determines to provide QOS guarantee for the first service flow according to the user subscription information and/or service authorization rules. of. The specific process of obtaining the first comprehensive priority is as follows:

According to the service authorization rule, the priority relationship corresponding to different service flows can be determined; according to the user subscription information, the priority relationship corresponding to the subscribed user can be determined.

When there are only service authorization rules, the processing unit 901 may use the priority level corresponding to the first service flow as the first comprehensive priority level according to the service authorization rules;

Alternatively, when there is only user subscription information, the processing unit 901 may take the priority level corresponding to the user as the first comprehensive priority according to the user subscription information;

When the user subscription information and the service authorization rule exist at the same time, the processing unit 901 will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Specifically, when it is determined to accept the admission control request, a scheduling rule corresponding to the first service flow is established. The scheduling rule may include the scheduling period and the time allocated for each scheduling.

Optionally, the scheduling rule may further include a scheduling start time.

In addition, when the processing unit 901 determines to accept the admission control request corresponding to the first request message, it also needs to determine the information of the user equipment corresponding to the scheduling rule, so that the AP provides the information for the user equipment in each scheduling period according to the information of the user equipment. The user equipment allocates the sending time of the upstream service flow, and sends the sending time to the user equipment; or, determines the information of the downstream service flow corresponding to the scheduling rule, so that the AP is based on the information of the downstream service flow in each scheduling period. The downlink service stream is assigned a sending time, and the downlink service stream is sent to the user equipment that determines to download the downlink service stream.

Optionally, the processing unit 901 is further configured to update the idle time of the channel after the scheduling rule corresponding to the first service flow is established. So that the processing unit can process other admission control requests according to the free time of the channel, thereby improving work efficiency.

It should be noted that the free time of the update channel mentioned here refers to: after the processing unit determines to accept the admission control request, it establishes a scheduling rule corresponding to the first service flow, and the first service flow has been allocated to transmit the first service flow. After the required channel time, the current remaining idle time of the channel is updated.

The sending unit 902 is further configured to send the scheduling rule to the AP, so that the AP can schedule the service flow according to the scheduling rule.

It should be noted that the admission control request may be sent by the AP or the network side device.

It should be understood that the receiving unit 903 is also configured to receive the first request message, and the admission control request is actually carried in the first request message received by the receiving unit 903, that is, the receiving unit 903 receives the first request message sent by the AP or The first request message sent by the network side device, where the request message carries an admission control request.

Therefore, when the first request message received by the receiving unit 903 is the first request message sent by the AP, the apparatus further includes: a configuration unit 904, which is configured to generate a forwarding principle for configuring the AP.

When the first request message received by the receiving unit 903 is the first request message sent by the network-side device, and the admission control request carried by the first request message is an uplink admission control request, the sending unit 902 is further configured to: send the request to the AP The second indication information is sent, and the second indication information is used for the AP to send the upstream classification information to the wireless station STA. The specific flowchart is shown in FIG. 9 .

It should be understood that, at the same time, there can only be one source of the request message received by the receiving unit 903 . It is generally impossible for the two to occur at the same time, so the subsequent execution actions generated according to the source of the received message are also optional, and correspond one-to-one with the source of the received message.

Therefore, in a network access control device provided in Embodiment 10 of the present invention, the processing unit determines whether to provide service quality assurance according to user subscription information and/or service authorization rules, and determines whether to accept service quality assurance under the premise of determining that service quality assurance is provided. Admission control request. When it is determined to accept the admission control request, the AP is instructed to establish a scheduling rule, thereby preventing WLAN network resources from being abused by unauthorized users or services.

FIG. 10 is a schematic structural diagram of an admission control apparatus according to Embodiment 11 of the present invention. The apparatus is mainly aimed at an access point AP. As shown in FIG. 10 , the admission control apparatus includes: a receiving unit 1001 and a Processing unit 1002.

The receiving unit 1001 is configured to receive a resource request message sent by the access controller AC.

Specifically, the receiving unit 1001 receives a resource request message sent by the AC, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow, wherein the admission control request includes parameter information, the first The traffic flow is the traffic flow corresponding to the admission control request.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit. In order to facilitate the processing unit 1002 to determine whether the current free time of the channel satisfies the admission control request according to the parameter information.

The obtained first priority level is the first comprehensive priority level, which is obtained after the AC determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of obtaining the first comprehensive priority is as follows:

The AC can determine the priority relationship corresponding to different service flows according to the service authorization rules; and can determine the priority relationship corresponding to the subscribed users according to the user subscription information.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may also include the minimum physical layer rate for transmitting the first service flow, so as to calculate the time for the channel required for transmitting the first service flow when the user supports multiple physical layer rates. , if it is calculated according to the lowest physical layer rate, it can be guaranteed that the service quality of the service flow can still be guaranteed under the worst channel condition.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, in order to enable the processing unit 1002 to establish a scheduling rule within a specified time, for example, to establish a corresponding service flow within 50ms. scheduling rules.

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the processing unit 1002 allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and sends the The sending time is sent to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the processing unit 1002 allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and assigns the downlink service flow Sent to the user equipment that determines to download the downlink service stream.

The processing unit 1002 is configured to determine whether the free time of the current channel satisfies the admission control request according to the parameter information.

Specifically, the processing unit 1002 determines, according to the above-described parameter information (mainly according to the maximum delay requirement, transmission rate, and the maximum length of the MAC layer data unit in the parameter information), the time and scheduling period of the channel occupied when transmitting the first service flow . The time of the channel occupied when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result. According to the comparison result, it is determined whether the current free time of the AP channel satisfies the admission control request.

When the comparison result is that the time occupied by the transmission of the first service flow on the channel is less than or equal to the current free time of the channel, it can be determined that the current free time of the channel meets the requirement of the admission control request. Then, a scheduling rule corresponding to the first service flow is established, so as to schedule the service flow.

When the comparison result is that the time that the first service flow occupies the channel is longer than the current free time of the channel, the processing unit 1002 will release the channel time occupied by the transmission of the current service flow according to the first priority level, so as to meet the requirements of the admission control request. requirements, wherein the priority level corresponding to the current service flow is lower than the first priority level.

It should be noted that the current service flow is the service flow that currently occupies the channel time in the AP, and the priority level corresponding to the service flow can be considered as the priority level of the scheduling rule established by the processing unit 1002 according to the service flow, and the scheduling rule The priority level has been stored in the AP.

Optionally, after the scheduling rule is established, the processing unit 1002 is further configured to update the free time of the channel.

So that the processing unit 1002 can process other admission control requests according to the free time of the channel, thereby improving work efficiency.

It should be noted that the free time for updating the channel mentioned here refers to the current remaining free time of the updating channel after the processing unit establishes the scheduling rule and allocates the channel time required for transmitting the first service flow.

It should be noted that when the admission control request is an uplink admission control request, the receiving unit 1001 is further configured to receive the indication information sent by the AC.

At this time, the apparatus may further include a sending unit 1003, and the sending unit 1003 is configured to send the upstream classification information to the wireless station STA according to the indication information.

Specifically, the sending unit 1003 sends a CF_POLL frame to the STA at the time when the scheduling of the upstream service flow starts, and the CF_POLL frame carries the classification information of the upstream service flow, so that the STA can determine the corresponding channel time transmission according to the classification information. Upstream service flow, and according to the instruction of the CF_POLL frame, send the upstream service flow at the specified time.

The network admission control apparatus provided in Embodiment 11 of the present invention receives a resource request message sent by an AC through a receiving unit, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow, and processes The unit determines, according to the parameter information in the admission control request, that the current free time of the channel meets the admission control request, and establishes a scheduling rule to schedule and transmit the service flow corresponding to the admission control request; if the current channel time is insufficient, the processing unit The service quality of the high-priority service stream can also be guaranteed by releasing the channel time occupied by the current low-priority service stream, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

FIG. 11 is a schematic structural diagram of an admission control apparatus according to Embodiment 12 of the present invention. The apparatus is mainly aimed at an access controller AC. As shown in FIG. 11 , the admission control apparatus includes: a processing unit 1101 , sending unit 1102;

The processing unit 1101 is configured to determine to send a resource request message to the access point AP according to user subscription information and/or service authorization rules.

Specifically, the processing unit 1101 determines whether to provide service quality assurance for the first service flow corresponding to the admission control request according to the user subscription information and/or service authorization rules, because only the subscription user or a specific service flow can obtain the service quality Therefore, the processing unit 1101 needs to judge whether the service flow corresponding to the admission control request conforms to the user subscription information and/or service authorization rules, that is, whether it is necessary to provide service quality assurance, and when it is determined to provide service quality assurance, the sending unit is used 1102 sends a resource request message to the AP; otherwise, the sending unit 1102 does not send a resource request message, wherein the resource request message includes an admission control request and a first priority level corresponding to the first service flow, wherein the admission control The request contains parameter information.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit, so that the AP can determine whether the current free time of the channel meets the admission control request according to the parameter information, and establish a schedule corresponding to the first service flow rule, wherein the first service flow is the service flow corresponding to the admission control request.

It should be noted that the obtained first priority level is the first comprehensive priority level, which is obtained after the processing unit 1101 determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of generating the first comprehensive priority is as follows:

The processing unit 1101 can determine the priority relationship corresponding to different service flows according to the service authorization rule; and can determine the priority relationship corresponding to the subscribed user according to the user subscription information.

When there are only service authorization rules, the processing unit 1101 may use the priority level corresponding to the first service flow as the first comprehensive priority level according to the service authorization rules;

Alternatively, when there is only user subscription information, the processing unit 1101 may take the priority level corresponding to the user as the first comprehensive priority according to the user subscription information;

When the user subscription information and the service authorization rule exist at the same time, the processing unit 1101 will combine the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may further include the minimum physical layer rate for transmitting the service flow. The purpose is that when the user supports multiple physical layer rates, when calculating the channel time required for transmitting the first service flow, if the calculation is based on the lowest physical layer rate, it can be guaranteed that in the worst channel condition, it can still be guaranteed. Quality of service for this traffic flow.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, the purpose is to enable the AP to establish a scheduling rule within a specified time, for example, within 50ms to establish a scheduling rule corresponding to the service flow. .

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and assigns the sending time to the user equipment. Send to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow to the downloader User equipment of downlink traffic flow.

It should be noted that the admission control request may be sent by the AP or the network side device.

It should be understood that the apparatus may further include a receiving unit 1103 for receiving the first request message. The admission control request is actually carried in the first request message received by the receiving unit 1103, that is, what the receiving unit 1103 receives is sent by the AP The first request message or the first request message sent by the network side device, the request message carries the admission control request.

If the receiving unit 1103 receives the first request message sent by the AP, the apparatus further includes a configuration unit 1104, configured to generate a forwarding principle for configuring the AP. When the request message received by the AP is some specific message, according to the forwarding principle configured by the configuration unit 1104, it needs to be directly reported to the AC for processing, for example, the first request message in this embodiment, when the AP receives the request message , it will be directly reported to the AC, and other non-specific messages will be handled by the AP itself.

Alternatively, the AP may directly report certain messages received to the AC for processing according to its own default principles.

In addition, if the receiving unit 1103 receives the first request message sent by the network-side device, and the admission control request carried by the first request message is an uplink admission control request, the sending unit 1102 is further configured to send an indication to the AP information, the indication information is used by the AP to send the upstream classification information to the wireless station STA, and the specific process is shown in FIG. 11 .

It should be understood that, at the same time, there can only be one source of the request message received by the receiving unit 1103 . It is generally impossible for the two to occur at the same time, so the subsequent execution actions generated according to the source of the received message are also optional, and correspond one-to-one with the source of the received message.

A schematic structural diagram of a network admission control device provided in Embodiment 12 of the present invention, the processing unit determines to provide service quality assurance according to user subscription information and/or service authorization rules, and uses the sending unit to send a resource request message to the AP. The request message includes an admission control request and a first priority level corresponding to the first service flow, so that the AP can determine that the current free time of the channel satisfies the admission control request according to the parameter information in the admission control request, and establish a connection with the admission control request. The scheduling rule corresponding to the first service flow, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

FIG. 12 is a schematic structural diagram of an access controller according to Embodiment 13 of the present invention. As shown in FIG. 12 , the access controller includes: a processor 1201 and a transmitter 1202;

The processor 1201, when determining to accept the admission control request according to the user subscription information and/or the service authorization rule, establishes a scheduling rule corresponding to the first service flow.

Specifically, the processor 1201 determines whether to provide QOS guarantee for the first service flow corresponding to the admission control request according to user subscription information and/or service authorization rules, and when determining to provide QOS guarantee, determines to occupy the first service flow when transmitting channel time.

The time occupied by the channel when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result. According to the comparison result, it is determined to accept the admission control request.

For example, when the comparison result is that the time that the first service flow occupies the channel is less than or equal to the current free time of the channel, the admission control request is accepted.

When the comparison result described above is that the time that the first service flow occupies the channel is longer than the current free time of the channel, at this time, the processor 1201 first determines whether there is a second service flow, and determines the first service flow corresponding to the second service flow. The second priority level is lower than the first priority level corresponding to the first service flow. If there is, the transmitter 1202 is notified, so that the transmitter 1202 sends the first indication information to the AP, where the first indication information is used to indicate the time for the AP to release the channel occupied by the second service flow.

Optionally, the access controller may further include a receiver 1203, configured to send the confirmation information to the processor 1201 after receiving the confirmation information sent by the AP for the time that the channel occupied by the second service flow has been released, so that The processor 1201 accepts the admission control request according to the confirmation information.

It should be understood that the second priority level corresponding to the second service flow described above is actually the priority level corresponding to the scheduling rule established by the processor 1201 according to the second service flow. Further, the processor 1201 described above determines that the second priority level corresponding to the second service flow is lower than the first priority level corresponding to the first service flow, specifically, it should determine the scheduling rule corresponding to the second service flow. The priority level is lower than the first priority level.

In addition, it should be noted that the first priority level obtained above is the first comprehensive priority level, which is obtained after the processor 1201 determines to provide QOS guarantee for the first service flow according to the user subscription information and/or service authorization rules. of.

The specific process of obtaining the first comprehensive priority is as follows:

According to the service authorization rule, the priority relationship corresponding to different service flows can be determined; according to the user subscription information, the priority relationship corresponding to the subscribed user can be determined.

When there are only service authorization rules, the processor 1201 may use the priority level corresponding to the first service flow as the first comprehensive priority level according to the service authorization rules;

Alternatively, when there is only user subscription information, the processor 1201 may, according to the user subscription information, take the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the processor 1201 will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Specifically, when it is determined to accept the admission control request, a scheduling rule corresponding to the first service flow is established. The scheduling rule may include a scheduling period and a time allocated for each scheduling.

Optionally, the scheduling rule may further include a scheduling start time.

In addition, when the processor 1201 determines to accept the admission control request, it also needs to determine the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the uplink service flow to the user equipment according to the information of the user equipment in each scheduling period. sending time, and sending the sending time to the user equipment; or, determining the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow , and send the downlink service stream to the user equipment that determines to download the downlink service stream.

Optionally, the processor 1201 is further configured to update the idle time of the channel after the scheduling rule corresponding to the first service flow is established. In this way, the processor 1201 can process other admission control requests according to the free time of the channel, thereby improving work efficiency.

It should be noted that the free time for updating the channel mentioned here refers to: after the processor 1201 determines to accept the admission control request, it establishes a scheduling rule corresponding to the first service flow, and transmits the first service flow after it has been allocated. After the required channel time, update the current remaining idle time of the channel.

The transmitter 1202 is configured to send the scheduling rule to the AP, so that the AP can schedule the service flow according to the scheduling rule.

It should be noted that the admission control request may be sent by the AP or the network side device.

It should be understood that the receiver 1203 is also configured to receive the first request message, and the admission control request is actually carried in the first request message received by the receiver 1203, that is, the receiver 1203 receives the first request message sent by the AP or The first request message sent by the network side device, where the request message carries an admission control request.

Therefore, when the first request message received by the receiver 1203 is the first request message sent by the AP, the processor 1201 is further configured to generate a forwarding principle for configuring the AP.

When the receiver 1203 receives that the first request message is the first request message sent by the network-side device, and the admission control request carried by the first request message is an uplink admission control request, the transmitter 1202 is further configured to: send to the AP The second indication information is used by the AP to send the upstream classification information to the wireless station STA.

It should be understood that, at the same time, there can only be one source of the request message received by the receiver 1203 . It is generally impossible for the two to occur at the same time, so the subsequent execution actions generated according to the source of the received message are also optional, and correspond one-to-one with the source of the received message.

Therefore, in the access controller provided by the thirteenth embodiment of the present invention, the processor determines whether to provide service quality assurance according to user subscription information and/or service authorization rules, and determines whether to accept service quality assurance under the premise of determining that service quality assurance is provided. Admission control request. When it is determined to accept the admission control request, the AP is instructed to establish a scheduling rule, thereby preventing WLAN network resources from being abused by unauthorized users or services.

FIG. 13 is a schematic structural diagram of an access point according to Embodiment 14 of the present invention. As shown in FIG. 13 , the access point includes: a receiver 1301 and a processor 1302;

The receiver 1301 is configured to receive the resource request message sent by the access controller AC.

Specifically, the receiver 1301 receives a resource request message sent by the AC, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow, wherein the admission control request includes parameter information, and the first The traffic flow is the traffic flow corresponding to the admission control request.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit. In order to facilitate the processor 1302 to determine whether the current idle time of the channel satisfies the admission control request according to the parameter information.

The obtained first priority level is the first comprehensive priority level, which is obtained after the AC determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of obtaining the first comprehensive priority is as follows:

The AC can determine the priority relationship corresponding to different service flows according to the service authorization rules; and can determine the priority relationship corresponding to the subscribed users according to the user subscription information.

When there are only service authorization rules, the AC may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the AC may use the user subscription information and use the priority level corresponding to the user as the first comprehensive priority;

When the user subscription information and the service authorization rule exist at the same time, the AC will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may also include the minimum physical layer rate for transmitting the first service flow, so as to calculate the time for the channel required for transmitting the first service flow when the user supports multiple physical layer rates. , if it is calculated according to the lowest physical layer rate, it can be guaranteed that the service quality of the service flow can still be guaranteed under the worst channel condition.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, in order to enable the processor 1302 to establish a scheduling rule within a specified time, for example, within 50ms to establish a corresponding service flow. scheduling rules.

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the processor 1302 allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and sends the The sending time is sent to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the processor 1302 allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow Sent to the user equipment that determines to download the downlink service stream.

The processor 1302 is configured to determine whether the free time of the current channel satisfies the admission control request according to the parameter information.

Specifically, the processor 1302 determines, according to the above-described parameter information (mainly according to the maximum delay requirement, transmission rate, and maximum length of the MAC layer data unit in the parameter information), the time and scheduling period of the channel occupied when transmitting the first service flow . The time of the channel occupied when transmitting the first service flow is compared with the current free time of the channel to obtain a comparison result. According to the comparison result, it is determined whether the current free time of the AP channel satisfies the admission control request.

When the comparison result is that the time occupied by the transmission of the first service flow on the channel is less than or equal to the current free time of the channel, it can be determined that the current free time of the channel meets the requirement of the admission control request. Then, a scheduling rule corresponding to the first service flow is established, so as to schedule the service flow.

When the comparison result is that the time that the first service flow occupies the channel is greater than the current free time of the channel, the processor 1302 will release the channel time occupied by the transmission of the current service flow according to the first priority level, so as to meet the requirements of the admission control request. requirements, wherein the priority level corresponding to the current service flow is lower than the first priority level.

It should be noted that the current service flow is the service flow that currently occupies the channel time in the AP, and the priority level corresponding to the service flow can be considered as the priority level of the scheduling rule established by the processor 1302 according to the service flow, and the scheduling rule The priority level has been stored in the AP.

Optionally, after the scheduling rule is established, the processor 1302 is further configured to update the free time of the channel.

In this way, the processor 1302 can process other admission control requests according to the idle time of the channel, thereby improving work efficiency.

It should be noted that the idle time of the update channel mentioned here refers to the current remaining idle time of the update channel after the processor 1302 establishes the scheduling rule and allocates the channel time required for transmitting the first service flow.

It should be noted that, when the admission control request is an uplink admission control request, the receiver 1301 is further configured to receive the indication information sent by the AC.

At this time, the apparatus may further include a transmitter 1303, and the transmitter 1303 is configured to send the upstream classification information to the wireless station STA according to the indication information.

Specifically, the transmitter 1303 sends a CF_POLL frame to the STA at the time when the scheduling of the upstream service flow starts, and the CF_POLL frame carries the classification information of the upstream service flow, so that the STA can determine the corresponding channel time transmission according to the classification information. Upstream service flow, and according to the instruction of the CF_POLL frame, send the upstream service flow at the specified time.

In the access point provided in Embodiment 14 of the present invention, a resource request message sent by an AC is received by a receiver, where the resource request message includes an admission control request and a first priority level corresponding to the first service flow. When the parameter information in the admission control request determines that the current free time of the channel meets the admission control request, a scheduling rule is established to schedule and transmit the service flow corresponding to the admission control request; if the current channel time is insufficient, the processor can also By releasing the channel time occupied by the current low-priority service flow, the service quality of the high-priority service flow is guaranteed, thereby preventing the WLAN network resources from being abused by unauthorized users or services.

FIG. 14 is a schematic structural diagram of an access controller according to Embodiment 15 of the present invention. As shown in FIG. 14 , the access controller includes: a processor 1401 and a transmitter 1402;

The processor 1401 is configured to determine to send a resource request message to the access point AP according to user subscription information and/or service authorization rules.

Specifically, the processor 1401 determines whether to provide QoS guarantee for the first service flow corresponding to the admission control request according to the user subscription information and/or service authorization rules, because only subscribed users or specific service flows can obtain QoS Therefore, the processor 1401 needs to judge whether the service flow corresponding to the admission control request conforms to the user subscription information and/or service authorization rules, that is, whether it is necessary to provide service quality assurance, and when it is determined to provide service quality assurance, the sender is notified. 1402 sends a resource request message to the AP; otherwise, the transmitter 1402 does not send a resource request message, wherein the resource request message includes an admission control request and a first priority level corresponding to the first service flow, wherein the admission control The request contains parameter information.

The parameter information includes the maximum delay requirement, the transmission rate and the maximum length of the MAC layer data unit, so that the AP can determine whether the current free time of the channel meets the admission control request according to the parameter information, and establish a schedule corresponding to the first service flow rule, wherein the first service flow is the service flow corresponding to the admission control request.

It should be noted that the obtained first priority level is the first comprehensive priority level, which is obtained after the processor 1401 determines to provide QOS guarantee for the first service flow according to user subscription information and/or service authorization rules. The specific process of generating the first comprehensive priority is as follows:

The processor 1401 can determine the priority relationship corresponding to different service flows according to the service authorization rule; and can determine the priority relationship corresponding to the subscribed user according to the user subscription information.

When there are only service authorization rules, the processor 1401 may use the priority level corresponding to the first service flow as the first comprehensive priority according to the service authorization rules;

Alternatively, when there is only user subscription information, the processor 1401 may take the priority level corresponding to the user as the first comprehensive priority according to the user subscription information;

When the user subscription information and the service authorization rule exist at the same time, the processor 1401 will integrate the priority level corresponding to the service authorization rule and the priority level corresponding to the user subscription information to obtain the first comprehensive priority level.

Optionally, the resource request message may further include the minimum physical layer rate for transmitting the service flow. The purpose is that when the user supports multiple physical layer rates, when calculating the channel time required for transmitting the first service flow, if the calculation is based on the lowest physical layer rate, it can be guaranteed that in the worst channel condition, it can still be guaranteed. Quality of service for this traffic flow.

Further optionally, the resource request message may also include a time constraint for transmitting the first service flow, the purpose is to enable the AP to establish a scheduling rule within a specified time, for example, within 50ms to establish a scheduling rule corresponding to the service flow. .

In addition, the resource request message may also include the information of the user equipment corresponding to the scheduling rule, so that the AP allocates the sending time of the upstream service flow to the user equipment in each scheduling period according to the information of the user equipment, and assigns the sending time to the user equipment. Send to the user equipment; or the information of the downlink service flow corresponding to the scheduling rule, so that the AP allocates the sending time for the downlink service flow in each scheduling period according to the information of the downlink service flow, and sends the downlink service flow to the downloader User equipment of downlink traffic flow.

It should be noted that the admission control request may be sent by the AP or the network side device.

It should be understood that the access controller may also include a receiver 1403 for receiving the first request message, and the admission control request is actually carried in the first request message received by the receiver 1403, that is, what the receiver 1403 receives is The first request message sent by the AP or the first request message sent by the network side device, where the request message carries the admission control request.

Therefore, if the receiver 1403 receives the first request message sent by the AP, the processor 1401 is further configured to generate a forwarding principle for configuring the AP. When the request message received by the AP is some specific message, according to the forwarding principle configured by the processor 1401, it needs to be directly reported to the AC for processing, for example, the first request message in this embodiment, when the AP receives the request message , it will be directly reported to the AC, and other non-specific messages will be handled by the AP itself.

Alternatively, the AP may directly report certain messages received to the AC for processing according to its own default principles.

In addition, if the receiver 1403 receives the first request message sent by the network-side device, and the admission control request carried by the first request message is an uplink admission control request, the transmitter 1402 is further configured to send an indication to the AP information, the indication information is used by the AP to send the upstream classification information to the wireless station STA.

It should be understood that, at the same time, there can only be one source of the request message received by the receiver 1401 . It is generally impossible for the two to occur at the same time, so the subsequent execution actions generated according to the source of the received message are also optional, and correspond one-to-one with the source of the received message.

A schematic structural diagram of an access controller provided in Embodiment 15 of the present invention, the processor determines to provide service quality assurance according to user subscription information and/or service authorization rules, and uses a transmitter to send a resource request message to an AP, the resource request message The message includes an admission control request and a first priority level corresponding to the first service flow, so that the AP can determine that the current free time of the channel satisfies the admission control request according to the parameter information in the admission control request, and establish a connection with the first service flow. A scheduling rule corresponding to a service flow, thereby preventing WLAN network resources from being abused by unauthorized users or services.

Professionals should be further aware that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. Interchangeability, the above description has generally described the components and steps of each example in terms of function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be implemented in hardware, a software module executed by a processor, or a combination of the two. A software module can be placed in random access memory (RAM), internal memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other in the technical field. in any other known form of storage medium.

The specific embodiments described above further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (32)

1. A method for controlling admission to a network, the method comprising:

when the access controller AC determines to provide service quality guarantee according to the user subscription information and/or the service authorization rule, determining the time of occupying a channel when transmitting a first service flow;

comparing the time of occupying the channel when the first service flow is transmitted with the current free time of the channel to obtain a comparison result;

determining to accept the admission control request according to the comparison result;

when an admission control request is received, establishing a scheduling rule corresponding to a first service flow, wherein the first service flow is a service flow corresponding to the admission control request;

sending the scheduling rule to an Access Point (AP), so that the AP can schedule the first service flow according to the scheduling rule;

wherein the determining to accept the admission control request according to the comparison result comprises:

when the comparison result shows that the time that the first service flow occupies the channel is longer than the current free time of the channel, determining that a second service flow exists, and a second priority level corresponding to the second service flow is lower than a first priority level corresponding to the first service flow, and sending first indication information to the AP, wherein the first indication information is used for indicating the AP to release the time that the second service flow occupies the channel;

and receiving an admission control request after receiving the confirmation information of the time for releasing the channel occupied by the second service flow, which is sent by the AP.

2. The method of claim 1, wherein the determining to accept the admission control request according to the comparison further comprises:

and when the comparison result shows that the time for transmitting the first service flow to occupy the channel is less than or equal to the current free time of the channel, the admission control request is accepted.

3. The method according to claim 1 or 2, characterized in that the method further comprises: and after the scheduling rule corresponding to the first service flow is established, updating the spare time of the channel.

4. The method of claim 1 or 2, wherein the admission control request is sent by the AP or a network side device.

5. The method according to claim 4, wherein when the admission control request is sent by the network-side device and the admission control request is an uplink admission control request, the method further comprises: and sending second indication information to the AP, wherein the second indication information is used for sending the uplink flow classification information to a wireless working Station (STA) by the AP.

6. A method for controlling admission to a network, the method comprising:

an Access Point (AP) receives a resource request message sent by an Access Controller (AC), wherein the resource request message comprises an admission control request and a first priority level corresponding to a first service flow, the admission control request comprises parameter information, and the first service flow is a service flow corresponding to the admission control request;

determining whether the current free time of the channel meets the access control request or not according to the parameter information;

when the current free time of the channel is determined to meet the access request, a scheduling rule corresponding to the first service flow is established;

and when the current free time of the channel is determined not to meet the admission control request, releasing the time for transmitting the current service flow to occupy the channel according to the first priority level so as to meet the admission control request, wherein the priority level corresponding to the current service flow is lower than the first priority level.

7. The method of claim 6, wherein the determining whether the current free time of the channel satisfies the admission control request according to the parameter information comprises:

determining the time of occupying a channel when the first service flow is transmitted according to the parameter information;

comparing the time of occupying the channel when the first service flow is transmitted with the current free time of the channel to obtain a comparison result;

and determining whether the current spare time of the channel meets the admission control request or not according to the comparison result.

8. The method of claim 7, wherein the determining whether the current free time of the channel satisfies the admission control request according to the comparison result comprises:

when the comparison result is that the time for transmitting the first service flow to occupy the channel is less than or equal to the current free time of the channel, determining that the current free time of the channel meets the admission control request;

and when the comparison result shows that the time of the first service flow occupying the channel is greater than the current free time of the channel, determining that the current free time of the channel does not satisfy the admission control request.

9. The method according to any of claims 6-8, wherein the resource request message further comprises: a lowest physical layer rate at which the first traffic stream is transmitted.

10. The method according to any one of claims 6-8, further comprising: and after the scheduling rule corresponding to the first service flow is established, updating the spare time of the channel.

11. The method according to any one of claims 6 to 8, further comprising: when the admission control request is an uplink admission control request, receiving indication information sent by an AC;

and sending the uplink flow classification information to the wireless work station STA according to the indication information.

12. A method for controlling admission to a network, the method comprising:

an Access Controller (AC) determines to send a resource request message to an Access Point (AP) according to user subscription information and/or a service authorization rule, wherein the resource request message comprises an admission control request and a first priority level corresponding to a first service flow, the admission control request comprises parameter information, so that the AP determines whether the current free time of a channel meets the admission control request according to the parameter information, and establishes a scheduling rule corresponding to the first service flow, and the first service flow is the service flow corresponding to the admission control request.

13. The method of claim 12, wherein the determining to send the resource request message to the AP according to the subscription information and/or the service authorization rule comprises: and when determining to provide service quality guarantee according to the user subscription information and/or the service authorization rule, sending the resource request message to the AP.

14. The method according to claim 12 or 13, wherein the resource request message further comprises: a lowest physical layer rate at which the first traffic stream is transmitted.

15. The method of claim 12, wherein the admission control request is sent by the AP or a network side device.

16. The method according to claim 15, wherein when the admission control request is sent by the network-side device and the admission control request is an uplink admission control request, the method further comprises: and sending indication information to the AP, wherein the indication information is used for sending the uplink flow classification information to a wireless workstation (STA) by the AP.

17. An access controller, characterized in that the access controller comprises: a processor and a transmitter;

the processor is used for determining the time of occupying the channel when the first service flow is transmitted when the service quality guarantee is determined to be provided according to the user subscription information and/or the service authorization rule;

the processor is further configured to compare the time of occupying the channel when the first service flow is transmitted with the current free time of the channel, and obtain a comparison result;

the processor is further configured to determine to accept an admission control request according to the comparison result;

the processor is further configured to establish a scheduling rule corresponding to a first service flow when receiving an admission control request, where the first service flow is a service flow corresponding to the admission control request;

the transmitter is configured to send the scheduling rule established by the processor to an access point AP, so that the AP schedules the first service flow according to the scheduling rule;

wherein the processor determines to accept the admission control request according to the comparison result, comprising: when the comparison result shows that the time of the first service flow occupying the channel is greater than the current free time of the channel, determining that a second service flow exists, and a second priority level corresponding to the second service flow is lower than a first priority level corresponding to the first service flow, and sending first indication information to the AP, wherein the first indication information is used for indicating the AP to release the time of the channel occupied by the second service flow; and after receiving the confirmation information of the time for releasing the channel occupied by the second service flow, which is sent by the AP, receiving the admission control request.

18. The access controller of claim 17, wherein the processor determines to accept the admission control request based on the comparison, comprising:

and when the comparison result shows that the time for transmitting the first service flow to occupy the channel is less than or equal to the current free time of the channel, the admission control request is accepted.

19. The access controller according to claim 17 or 18, wherein the processor is further configured to update the free time of the channel after establishing the scheduling rule corresponding to the first traffic flow.

20. The access controller according to claim 17 or 18, wherein the admission control request is sent by the AP or a network side device.

21. The access controller according to claim 20, wherein when the admission control request is sent by the network-side device, and the admission control request is an uplink admission control request, the transmitter is further configured to: and sending second indication information to the AP, wherein the second indication information is used for sending the uplink flow classification information to a wireless working Station (STA) by the AP.

22. An access point, the access point comprising: a receiver, a processor;

the receiver is configured to receive a resource request message sent by an access controller AC, where the resource request message includes an admission control request and a first priority level corresponding to a first service flow, where the admission control request includes parameter information, and the first service flow is a service flow corresponding to the admission control request;

the processor is used for determining whether the current free time of the channel meets the access control request according to the parameter information;

when the current free time of the channel is determined to meet the access request, a scheduling rule corresponding to the first service flow is established;

and when the current free time of the channel is determined not to meet the admission control request, releasing the time for transmitting the current service flow to occupy the channel according to the first priority level so as to meet the admission control request, wherein the priority level corresponding to the current service flow is lower than the first priority level.

23. The access point of claim 22, wherein the processor is further configured to:

determining the time of occupying a channel when the first service flow is transmitted according to the parameter information;

comparing the time of occupying the channel when the first service flow is transmitted with the current free time of the channel to obtain a comparison result;

and determining whether the current spare time of the channel meets the admission control request or not according to the comparison result.

24. The access point of claim 23, wherein the processor determines whether the current free time of the channel satisfies the admission control request according to the comparison result, comprising:

when the comparison result is that the time for transmitting the first service flow to occupy the channel is less than or equal to the current free time of the channel, determining that the current free time of the channel meets the admission control request;

and when the comparison result shows that the time of the first service flow occupying the channel is greater than the current free time of the channel, determining that the current free time of the channel does not satisfy the admission control request.

25. The access point of any of claims 22-24, wherein the resource request message further comprises: a lowest physical layer rate at which the first traffic stream is transmitted.

26. The access point of any of claims 22-24, wherein the processor is further configured to update the free time of the channel after establishing the scheduling rule corresponding to the first traffic flow.

27. The access point according to any of claims 22-24, wherein the access point further comprises a transmitter, and when the admission control request is an uplink admission control request, the receiver receives indication information transmitted by the AC;

and the transmitter is used for transmitting the uplink flow classification information to the wireless work station STA according to the indication information.

28. An access controller, characterized in that the access controller comprises: a processor and a transmitter;

the processor is configured to determine, according to user subscription information and/or a service authorization rule, to send a resource request message to an access point AP, where the resource request message includes an admission control request and a first priority level corresponding to a first service flow, where the admission control request includes parameter information, so that the AP determines, according to the parameter information, whether a current free time of a channel satisfies the admission control request, and establishes a scheduling rule corresponding to the first service flow, where the first service flow is a service flow corresponding to the admission control request;

the transmitter is configured to transmit a resource request message to the AP.

29. The access controller of claim 28, wherein the processor is specifically configured to: and when determining to provide service quality guarantee according to the user subscription information and/or the service authorization rule, sending the resource request message to the AP.

30. The access controller according to claim 28 or 29, wherein the resource request message further comprises: a lowest physical layer rate at which the first traffic stream is transmitted.

31. The access controller according to claim 28, wherein the admission control request is sent by the AP or a network side device.

32. The access controller according to claim 31, wherein when the admission control request is sent by the network-side device, and the admission control request is an uplink admission control request, the transmitter is further configured to: and sending indication information to the AP, wherein the indication information is used for sending the uplink flow classification information to a wireless workstation (STA) by the AP.

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