CN103974443B - Distributed channel access control method and device - Google Patents

Abstract

The embodiment of the present invention discloses a distributed channel access control method and device, wherein the method includes: according to the user level of the terminal and the data priority of the data being transmitted by the terminal, The data is stored in the corresponding transmission queue for transmission. Thus, the allocation of channel resources is bound to the user level, which can provide more channel resources for high-level users and improve user experience.

Description

Distributed channel access control method and device

technical field

The invention relates to the communication field, in particular to a distributed channel access control method and equipment.

Background technique

In the wireless local area network (Wireless Local Area Network, WLAN), the distributed coordination function (Distributed Coordination Function, DCF) channel access mechanism is initially adopted, that is, the terminal first monitors the channel before occupying the channel to send a message, and when the channel is idle for longer than Or when it is equal to the idle waiting time, a backoff time is randomly selected within the contention window range to backoff, and the terminal that finishes backoff first competes for the channel of the access point (Access Point, AP) and starts sending messages. Under this mechanism, packets sent by all users equally compete for wireless resources. Since there is no mechanism for distinguishing data priority, the access point (Access Point, AP) treats the terminal message with the same priority when sending the message externally. Moreover, when the network is congested, all types of packets will be discarded with the same probability.

In order to improve the insufficiency of the DCF channel access mechanism, an enhanced distributed channel access (Enhanced Distributed Channel Access, EDCA) scheduling mechanism is produced. The EDCA mechanism is an improved version of DCF. EDCA specifies four access types, each type corresponds to a priority transmission queue, and the default name and priority order of each transmission queue is: AC_VO (voice) > AC_VI (Video) > AC_BE (Best Effort) > AC_BK (Background), which means that the priority of the four access types from high to low is voice (VO), video (VI), best effort (BE) and Background data (BK). Of course, the priority order of the four priority queues is not absolute, and the priority order can be adjusted by modifying parameters. It can be seen from this that when the EDCA scheduling mechanism is used, data with different priorities can be scheduled according to the corresponding scheduling priority, but different users under the same priority data are still treated equally, so that high priority cannot be satisfied. Level users' data transfer requirements.

Contents of the invention

Embodiments of the present invention provide a distributed channel access control method and device, which can provide more channel resources for high-level users and improve user experience.

The first aspect of the present invention provides a distributed channel access control method, which may include:

According to the user level of the terminal and the data priority of the data being transmitted by the terminal, the data being transmitted by the terminal is stored in a corresponding transmission queue for transmission.

With reference to the first aspect, in a first possible implementation manner, according to the user level of the terminal and the data priority of the data being transmitted by the terminal, the data being transmitted by the terminal is stored in a corresponding transmission queue for transmission Previously, also included:

receiving a request to adjust the user level of the terminal;

adjusting the user level of the terminal according to the request;

adjusting distributed channel access parameters of the terminal according to the adjusted user level;

The terminal is notified of the adjustment result of the user level and the distributed channel access parameters, so that the terminal obtains the distributed channel access parameters matching the user level.

In combination with the first aspect, in a second possible implementation, according to the user level of the terminal and the data priority of the data being transmitted by the terminal, the data being transmitted by the terminal is stored in a corresponding transmission queue for transmission Previously, also included:

Create multiple transmission queues, and establish the corresponding relationship between each transmission queue, data priority and user level.

With reference to the second possible implementation of the first aspect, in a third possible implementation, the created transmission queues include a high-priority voice (VO_H) queue, a low-priority voice (VO_L) queue, a high-priority voice High priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H) queue, low priority Level background data (BK_L) queues, the priority of their sending data is from high to low.

With reference to any one of the first aspect to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, according to the user level of the terminal and the data priority of the data being transmitted by the terminal, the Before the data being transmitted by the terminal is stored in the corresponding transmission queue for transmission, it is judged whether the transmission queue can still store data, and if it is judged to be yes, the data being transmitted by the terminal is stored in the transmission queue Sending; if the judgment is no, store the data being transmitted by the terminal into other transmission queues for transmission.

In combination with the fourth possible implementation of the first aspect, in the fifth possible implementation, when storing the data being transmitted by the terminal in other transmission queues for transmission, the data being transmitted by the terminal is prioritized Stored in the transmission queue storing the data of the terminal for transmission.

The second aspect of the embodiment of the present invention provides a distributed channel access control device, which may include:

An acquisition module, configured to acquire the user level of the terminal and the data priority of the data being transmitted by the terminal;

The allocation module is configured to store the data being transmitted by the terminal into a corresponding transmission queue for transmission according to the user level and data priority of the terminal acquired by the acquisition module.

With reference to the second aspect, in a first possible implementation manner, the device further includes:

a receiving module, configured to receive an adjustment request for adjusting the user level of the terminal;

An adjustment module, configured to adjust the user level of the terminal according to the request received by the receiving module, and adjust the distributed channel access parameters of the terminal according to the adjusted user level;

The sending module is configured to notify the terminal of the adjustment result of the user level and distributed channel access parameters by the adjustment module, so that the terminal obtains the distributed channel access parameters matching the user level.

With reference to the second aspect, in a second possible implementation manner, the device further includes:

The creation module is used to create multiple transmission queues, and establish the corresponding relationship between each transmission queue, data priority and user level.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the transmission queue created by the creation module includes a high-priority voice (VO_H) queue, a low-priority voice (VO_L) queue, High priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H) queue, Low-priority background data (BK_L) queues, the priority of which they send data is from high to low.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the device further includes:

A judging module, configured to judge the transmission before the allocating module stores the data being transmitted by the terminal in a corresponding transmission queue according to the user level and data priority of the terminal acquired by the obtaining module Whether the queue can still store data currently;

The allocation module is specifically configured to store the data being transmitted by the terminal in the transmission queue for transmission when the judgment result of the judgment module is yes; when the judgment result of the judgment module is no, The data being transmitted by the terminal is stored in other transmission queues for transmission.

With reference to the fourth possible implementation of the first aspect, in a fifth possible implementation, when the allocating module stores the data being transmitted by the terminal into other transmission queues for transmission, it prioritizes the terminal The data being transmitted is stored in the transmission queue storing the data of the terminal for transmission.

It can be seen from the above that in some feasible implementation manners of the present invention, according to the user level of the terminal and the data priority of the data being transmitted by the terminal, the data being transmitted by the terminal is stored in the corresponding transmission queue for transmission . Thus, the allocation of channel resources is bound to the user level, which can provide more channel resources for high-level users and improve user experience.

Description of drawings

FIG. 1 is a schematic flowchart of Embodiment 1 of the distributed channel access control method of the present invention;

FIG. 2 is a schematic flowchart of Embodiment 2 of the distributed channel access control method of the present invention;

FIG. 3 is a schematic structural diagram of Embodiment 1 of the distributed channel access control device of the present invention;

FIG. 4 is a schematic structural diagram of Embodiment 2 of the distributed channel access control device of the present invention;

FIG. 5 is a schematic structural diagram of Embodiment 3 of the distributed channel access control device of the present invention;

FIG. 6 is a schematic structural diagram of Embodiment 4 of the distributed channel access control device of the present invention;

FIG. 7 is a schematic diagram of the composition of the priority queue of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

The present invention provides a distributed channel access control method, which includes: according to the user level of the terminal and the data priority of the data being transmitted by the terminal, storing the data being transmitted by the terminal into the corresponding transmission queue send. Thus, the allocation of channel resources is bound to the user level, which can provide more channel resources for high-level users and improve user experience.

The embodiments of the distributed channel access control method of the present invention will be illustrated below with reference to the accompanying drawings.

FIG. 1 is a schematic flowchart of Embodiment 1 of the distributed channel access control method of the present invention. As shown in Figure 1, the method of the present invention may include:

Step S110, according to the data priority of the data being transmitted by the terminal, search for a transmission queue corresponding to the data priority.

Step S111, according to the user level of the terminal, search for a transmission queue corresponding to the user level among the found transmission queues;

Step S112, storing the data being transmitted by the terminal into the found transmission queue corresponding to the user level for transmission.

In a specific implementation, before step S110, the method of the present invention may further include:

Create multiple transmission queues, and establish the corresponding relationship between the type of each transmission queue and the data priority, and establish the corresponding relationship between the transmission queues of each type and the user level; the number of transmission queues of each type is two or two Above, multiple transmission queues of the same type send data of the same type, and each transmission queue in the multiple transmission queues of the same type corresponds to one or more user levels.

In specific implementation, the method in the embodiment of the present invention is applicable to various wireless network environments (for example, wireless local area network (WLAN)). And in different network environments, the division mode of data priority and transmission queue is different. For example, with reference to FIG. ) queue, high priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H ) queue, low-priority background data (BK_L) queue, the priority of their sending data is from high to low.

Wherein, the type of high-priority voice (VO_H) queue and low-priority voice (VO_L) queue is voice (VO);

The type of high priority video (VI_H) queue and low priority video (VI_L) queue is video (VL);

The type of high priority best effort (BE_H) queue and low priority best effort (BE_L) queue is best effort (BE);

The type of the high priority background data (BK_H) queue and the low priority background data (BK_L) queue is background data.

Among them, the high-priority voice (VO_H) queue corresponds to one or more user-level voice data, the low-priority voice (VO_L) queue corresponds to one or more user-level voice data; the high-priority video (VI_H) queue corresponds to one or multiple user-level video data, the low-priority video (VI_L) queue corresponds to one or more user-level video data; the high-priority best-effort (BE_H) queue corresponds to one or more user-level best-effort data, The low-priority best-effort (BE_L) queue corresponds to one or more user-level best-effort data; the high-priority background data (BK_H) queue corresponds to one or more user-level background data, and the low-priority background data (BK_L ) queue corresponds to one or more user-level background data. Therefore, under the EDCA mechanism, there are 8 queues in total to control the sending of terminal data.

Therefore, in step S110 and step S111, the created result can be used to perform a corresponding search.

In some feasible implementations, when the system is initialized, each terminal is assigned a corresponding user level, therefore, in step S110 and step S111, the queue can be searched according to the saved pre-allocated user level of the terminal .

In some feasible implementations, the user may temporarily request to increase or decrease the user level of the terminal for data needs. For example, when the network is congested, a user is willing to pay for a higher rate, and the user can click the acceleration button of the application to increase the user level. The user level is increased, or, if the package is about to be exceeded, and a user wants to temporarily reduce the rate, he can also click the deceleration button of the application to reduce the user level to save system traffic. Therefore, in step S110 and step S111, a suitable queue can be found for the user whose user level has been updated according to the user's request.

In some feasible implementations, the network side can also temporarily request to change the user level. For example, network resources are limited. When there are many high-priority users, the speed of other users needs to be reduced. At this time, the network side will actively reduce some terminals. user level. Therefore, in step S110 and step S111, a suitable queue can be found for the user whose user level has been updated according to the request of the network side.

In some feasible embodiments, different transmission queues and queues of transmission queues are divided by different distributed channel access parameters, for example, for the EDCA mechanism, including AIFSN (arbitration inter Framespacing number), ECWmin ( exponetn form of CWmin minimum contention window index form), ECWmax (exponent form of CWmax maximum contention window index form), TXOPlimit (transmission opportunity limit transmission opportunity limit) and ack-policy (ACK strategy).

AIFSN: WMM can configure different idle waiting time for different ACs. The larger the value of AIFSN, the longer the user's idle waiting time.

ECWmin and ECWmax: These two values determine the average backoff time. The larger the value, the longer the average backoff time for users.

TXOPLimit: The maximum time that a user can occupy the channel after a successful competition. The larger the value, the greater the channel time that the user can occupy at one time. If it is 0, only one message can be sent after each channel is occupied.

In some feasible implementation manners, when the transmission queue corresponding to the user level is found in step S111, the method in the embodiment of the present invention may further include (not shown):

Judging whether the transmission queue corresponding to the user level can still store data at present, if it is judged to be yes, storing the data being transmitted by the terminal into the found transmission queue corresponding to the user level Sending; if the judgment is no, storing the data being transmitted by the terminal into other transmission queues in the found transmission queue corresponding to the data priority for transmission.

For example, the data being transmitted may be stored in a queue with a higher priority or in a queue with a lower priority among the transmission queues corresponding to the priority of the data for transmission. For another example, when the data being transmitted by the terminal is stored in other transmission queues for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored in the found transmission queue to send in. In specific determination, it may be determined whether the transmission queue can store data according to the capacity of the transmission queue and the scheduling strategy. It should be noted that, in order to ensure the data quality of more users as much as possible without wasting resources, some or all of the data streams of users with high user-level requests are put into high-priority queues as much as possible through certain rules.

As can be seen from the above, in some feasible implementation manners of the present invention, according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, in the In the found transmission queue, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the found transmission queue for transmission. It can be seen that, after going through the method flow of the embodiment of the present invention, data of terminals of different user levels in the local area are transmitted through different transmission queues. The terminal equipment with a high user level can preferentially enjoy channel resources, and the experience of the user with a high user level is enhanced.

FIG. 2 is a schematic flowchart of Embodiment 2 of the distributed channel access control method of the present invention. As shown in Figure 2, the method of the present invention may include:

Step S210, receiving a request for adjusting the user level of the terminal.

Step S211, adjusting the user level of the terminal according to the request.

Step S212, adjusting the distributed channel access parameters of the terminal according to the adjusted user level.

Step S213, notifying the terminal of the adjustment result of the user level and the distributed channel access parameters, so that the terminal obtains the distributed channel access parameters matching the user level.

Step S214, according to the data priority of the data being transmitted by the terminal, search for a transmission queue corresponding to the data priority.

Step S215, according to the user level of the terminal, search for a transmission queue corresponding to the user level among the found transmission queues;

Step S216, storing the data being transmitted by the terminal into the found transmission queue corresponding to the user level for transmission.

In a specific implementation, before step S210, the method of the present invention may further include:

Create multiple transmission queues, and establish the corresponding relationship between the type of each transmission queue and the data priority, and establish the corresponding relationship between the transmission queues of each type and the user level; the number of transmission queues of each type is two or two Above, multiple transmission queues of the same type send data of the same type, and each transmission queue in the multiple transmission queues of the same type corresponds to one or more user levels.

In specific implementation, the method in the embodiment of the present invention is applicable to various wireless network environments (for example, wireless local area network (WLAN)). And in different network environments, the division mode of data priority and transmission queue is different. For example, with reference to FIG. ) queue, high priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H ) queue, low-priority background data (BK_L) queue, the priority of their sending data is from high to low.

Wherein, the type of high-priority voice (VO_H) queue and low-priority voice (VO_L) queue is voice (VO);

The type of high priority video (VI_H) queue and low priority video (VI_L) queue is video (VL);

The type of high priority best effort (BE_H) queue and low priority best effort (BE_L) queue is best effort (BE);

The type of the high priority background data (BK_H) queue and the low priority background data (BK_L) queue is background data.

Among them, the high-priority voice (VO_H) queue corresponds to one or more user-level voice data, the low-priority voice (VO_L) queue corresponds to one or more user-level voice data; the high-priority video (VI_H) queue corresponds to one or multiple user-level video data, the low-priority video (VI_L) queue corresponds to one or more user-level video data; the high-priority best-effort (BE_H) queue corresponds to one or more user-level best-effort data, The low-priority best-effort (BE_L) queue corresponds to one or more user-level best-effort data; the high-priority background data (BK_H) queue corresponds to one or more user-level background data, and the low-priority background data (BK_L ) queue corresponds to one or more user-level background data. Therefore, under the EDCA mechanism, there are 8 queues in total to control the sending of terminal data.

In the specific implementation, when the system is initialized, each terminal is assigned a corresponding user level. Therefore, during the data transmission process of the terminal, the possibility of adjusting the user level of the terminal may occur due to some reasons, such as , the user may temporarily request to increase or decrease the user level of the terminal for data needs. For example, when the network is congested, a user is willing to pay for a higher rate. Therefore, the user can click the acceleration button of the application to send The request of the user level, at this time, what received in step S210 is the request of requesting to increase the user level; or, when the package is about to exceed, and a user wants to temporarily slow down the rate, he can also click the deceleration button of the application program, and request to reduce the user level. Save system traffic. Therefore, in step S210, a request for downgrading the user level may be received. As another example, in some feasible implementations, the network side can also temporarily request to change the user level. For example, network resources are limited. When there are many high-priority users, the speed of other users needs to be reduced. At this time, the network side will actively request Lower user level for some terminals. Therefore, in step S210, a request to reduce the user level of the terminal may be received from the network side.

In a specific implementation, the method of the present invention can be completed by an access point (Access Point, AP), and at this time, steps S210-S213 of the embodiment of the present invention can be completed through a detection process of the AP. The details are as follows:

After the AP receives the request to adjust the user level, the AP will change the quality (QoS) version number in the next beacon frame (Beacon) message, and the other fields will not be changed.

After receiving the Beacon, all terminals find that the QoS version number has changed, and will send a probe request (Probe request) message to the AP according to the protocol.

After the AP receives the Probe request, it only sends a probe response (Probe response) to the terminal that needs to adjust the user level, and modifies the EDCA parameters and user level in the Probe response, so that the terminal obtains the user level that matches the user level. Distributed channel access parameters, the AP does not respond to Probe request messages from other terminals.

Thus, a terminal that subsequently obtains the distributed channel access parameters matching the user level can transmit uplink data through the adjusted distributed channel access parameters.

In some feasible implementation manners, when the priority queue is found in step S215, the method in the embodiment of the present invention may also include (not shown):

Judging whether the transmission queue corresponding to the user level can still store data at present, if it is judged to be yes, storing the data being transmitted by the terminal into the found transmission queue corresponding to the user level Sending; if the judgment is no, storing the data being transmitted by the terminal into other transmission queues in the found transmission queue corresponding to the data priority for transmission.

For example, the data being transmitted may be stored in a queue with a higher priority or in a queue with a lower priority among the transmission queues corresponding to the priority of the data for transmission. For another example, when the data being transmitted by the terminal is stored in other transmission queues for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored in the found transmission queue to send in. In specific determination, it may be determined whether the transmission queue can store data according to the capacity of the transmission queue and the scheduling strategy. It should be noted that, in order to ensure the data quality of more users as much as possible without wasting resources, some or all of the data streams of users with high user-level requests are put into high-priority queues as much as possible through certain rules.

As can be seen from the above, in some feasible implementation manners of the present invention, according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, in the In the found transmission queue, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the found transmission queue for transmission. It can be seen that, after going through the method flow of the embodiment of the present invention, data of terminals of different user levels in the local area are transmitted through different transmission queues. The terminal equipment with a high user level can preferentially enjoy channel resources, and the experience of the user with a high user level is enhanced.

FIG. 3 is a schematic structural diagram of Embodiment 1 of the distributed channel access control device of the present invention. As shown in Figure 3, the distributed channel access control device of the present invention may include an acquisition module 30 and an allocation module 32, and the allocation module 32 may further include a search module 321 and an allocation sub-module 322; wherein,

The acquiring module 30 is configured to acquire the user level of the terminal and the data priority of the data being transmitted by the terminal. In specific implementation, when the embodiment of the present invention receives the data being transmitted by the terminal, information such as user level and data priority can be activated.

The allocation module 32 is configured to store the data being transmitted by the terminal into a corresponding transmission queue for transmission according to the user level and data priority of the terminal acquired by the acquisition module 30 . In this embodiment, the search module 321 is configured to search for the transmission queue corresponding to the data priority according to the data priority of the data being transmitted by the terminal, and according to the user level of the terminal, find out In the transmission queue corresponding to the data priority, search for the transmission queue corresponding to the user level; the allocation sub-module 322 is used to store the data being transmitted by the terminal into the found and the user Send in the transmission queue corresponding to the level.

In a specific implementation, the distributed channel access control device of the present invention may be a wireless network access device such as an access point (Access Point, AP) that communicates with a terminal.

In specific implementation, the device of the embodiment of the present invention may also include a creation module, which is used to create multiple transmission queues, and establish the corresponding relationship between the type of each transmission queue and the data priority, and establish the transmission queues and user levels under each type The corresponding relationship; the number of each type of transmission queue is two or more, multiple transmission queues of the same type send the same type of data, and each transmission queue in the multiple transmission queues of the same type corresponds to one or more user level.

In a specific implementation, the device in the embodiment of the present invention may be applicable to various wireless network environments (for example, a wireless local area network (WLAN). And in different network environments, the division mode of data priority and transmission queue is different. For example, with reference to FIG. ) queue, high priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H ) queue, low-priority background data (BK_L) queue, the priority of their sending data is from high to low.

Wherein, the type of high-priority voice (VO_H) queue and low-priority voice (VO_L) queue is voice (VO);

The type of high priority video (VI_H) queue and low priority video (VI_L) queue is video (VL);

The type of high priority best effort (BE_H) queue and low priority best effort (BE_L) queue is best effort (BE);

The type of high priority background data (BK_H) queue and low priority background data (BK_L) queue is background data.

Among them, the high-priority voice (VO_H) queue corresponds to one or more user-level voice data, the low-priority voice (VO_L) queue corresponds to one or more user-level voice data; the high-priority video (VI_H) queue corresponds to one or multiple user-level video data, the low-priority video (VI_L) queue corresponds to one or more user-level video data; the high-priority best-effort (BE_H) queue corresponds to one or more user-level best-effort data, The low-priority best-effort (BE_L) queue corresponds to one or more user-level best-effort data; the high-priority background data (BK_H) queue corresponds to one or more user-level background data, and the low-priority background data (BK_L ) queue corresponds to one or more user-level background data. Therefore, under the EDCA mechanism, there are 8 queues in total to control the sending of terminal data.

Therefore, the search module 321 can use the created result to perform a corresponding search.

In some feasible implementation manners, when the system is initialized, each terminal is assigned a corresponding user level, therefore, the search module 321 can search the queue according to the saved pre-assigned user level of the terminal.

In some feasible implementations, the user may temporarily request to increase or decrease the user level of the terminal for data needs. For example, when the network is congested, a user is willing to pay for a higher rate, and the user can click the acceleration button of the application to increase the user level. The user level is increased, or, if the package is about to be exceeded, and a user wants to temporarily reduce the rate, he can also click the deceleration button of the application to reduce the user level to save system traffic. Therefore, the search module 321 can search for an appropriate queue for the user whose user level has been updated according to the user's request.

In some feasible implementations, the network side can also temporarily request to change the user level. For example, network resources are limited. When there are many high-priority users, the speed of other users needs to be reduced. At this time, the network side will actively reduce some terminals. user level. Therefore, the search module 321 can search for a suitable queue for the user whose user level has been updated according to the request of the network side.

In some feasible embodiments, different transmission queues and queues of transmission queues are divided by different distributed channel access parameters, for example, for the EDCA mechanism, including AIFSN (arbitration inter Framespacing number), ECWmin ( exponetn form of CWmin minimum contention window index form), ECWmax (exponent form of CWmax maximum contention window index form), TXOPlimit (transmissionopportunity limit transmission opportunity limit) and ack-policy (ACK strategy).

AIFSN: WMM can configure different idle waiting time for different ACs. The larger the value of AIFSN, the longer the user's idle waiting time.

ECWmin and ECWmax: These two values determine the average backoff time. The larger the value, the longer the average backoff time for users.

TXOPLimit: The maximum time that a user can occupy the channel after a successful competition. The larger the value, the greater the channel time that the user can occupy at one time. If it is 0, only one message can be sent after each channel is occupied.

In some feasible implementation manners, when the search module 321 finds the transmission queue corresponding to the user level, the device in this embodiment of the present invention may further include (not shown):

a judging module, configured to judge whether the transmission queue corresponding to the user level can still store data at present; Send in the transmission queue corresponding to the user level; if the judgment is no, the allocation submodule 322 stores the data being transmitted by the terminal into the found transmission queue corresponding to the data priority Send in other transmit queues.

For example, the data being transmitted may be stored in a queue with a higher priority or in a queue with a lower priority among the transmission queues corresponding to the priority of the data for transmission. For another example, when the data being transmitted by the terminal is stored in other transmission queues for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored in the found transmission queue to send in. In specific determination, it may be determined whether the transmission queue can store data according to the capacity of the transmission queue and the scheduling policy. It should be noted that, in order to ensure the data quality of more users as much as possible without wasting resources, some or all of the data streams of users with high user-level requests are put into high-priority queues as much as possible through certain rules.

As can be seen from the above, in some feasible implementation manners of the present invention, according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, in the In the found transmission queue, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the found transmission queue for transmission. It can be seen that, after going through the method flow of the embodiment of the present invention, data of terminals of different user levels in the local area are transmitted through different transmission queues. The terminal equipment with a high user level can preferentially enjoy channel resources, and the experience of the user with a high user level is enhanced.

FIG. 4 is a schematic structural diagram of Embodiment 2 of the distributed channel access control device of the present invention. As shown in FIG. 4, the distributed channel access control device of the present invention may include a receiving module 41, an adjusting module 42, a sending module 43, an acquiring module 44, and an allocating module 45, wherein:

A receiving module 41, configured to receive an adjustment request for adjusting the user level of the terminal;

An adjustment module 42, configured to adjust the user level of the terminal according to the request received by the receiving module 41, and adjust the distributed channel access parameters of the terminal according to the adjusted user level;

The sending module 43 is configured to notify the terminal of the adjustment result of the adjustment module 42 to the user level and the distributed channel access parameters, so that the terminal obtains the distributed channel access parameters matching the user level .

The acquiring module 44 is configured to acquire the user level of the terminal and the data priority of the data being transmitted by the terminal. In specific implementation, when the embodiment of the present invention receives the data being transmitted by the terminal, information such as user level and data priority can be activated.

The allocation module 45 is configured to store the data being transmitted by the terminal into a corresponding transmission queue for transmission according to the user level and data priority of the terminal acquired by the acquisition module 44 . In this embodiment, the search module 451 is configured to search for the transmission queue corresponding to the data priority according to the data priority of the data being transmitted by the terminal, and according to the user level of the terminal, find out In the transmission queue corresponding to the data priority, search for the transmission queue corresponding to the user level; the allocation submodule 452 is used to store the data being transmitted by the terminal into the found transmission queue for processing send.

In a specific implementation, the distributed channel access control device of the present invention may be a wireless network access device such as an access point (Access Point, AP) that communicates with a terminal.

In the specific implementation, when the system is initialized, each terminal is assigned a corresponding user level. Therefore, in the process of data processing by the terminal, the possibility of adjusting the user level of the terminal may occur due to some reasons, for example, The user may temporarily request to increase or decrease the user level of the terminal for data needs. For example, when the network is congested, a user is willing to pay for a higher speed. Level request, at this moment, what receiving module 41 receives is the request of requesting to increase the user level; Or, when the package is about to exceed, and a certain user wants to temporarily slow down the rate, he can also click the deceleration button of the application program, and request to reduce the user level to save system traffic. Therefore, the receiving module 41 may receive a request to reduce the user level. As another example, in some feasible implementations, the network side can also temporarily request to change the user level. For example, network resources are limited. When there are many high-priority users, the speed of other users needs to be reduced. At this time, the network side will actively request Lower user level for some terminals. Therefore, the receiving module 41 may receive a request from the network side to reduce the user level of the terminal.

In specific implementation, the device of the embodiment of the present invention may also include a creation module, which is used to create multiple transmission queues, and establish the corresponding relationship between the type of each transmission queue and the data priority, and establish the transmission queues and user levels under each type The corresponding relationship; the number of each type of transmission queue is two or more, multiple transmission queues of the same type send the same type of data, and each transmission queue in the multiple transmission queues of the same type corresponds to one or more user level.

In a specific implementation, the device in the embodiment of the present invention may be applicable to various wireless network environments (for example, a wireless local area network (WLAN). And in different network environments, the division mode of data priority and transmission queue is different. For example, with reference to FIG. ) queue, high priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H ) queue, low-priority background data (BK_L) queue, the priority of their sending data is from high to low.

Wherein, the type of high-priority voice (VO_H) queue and low-priority voice (VO_L) queue is voice (VO);

The type of high priority video (VI_H) queue and low priority video (VI_L) queue is video (VL);

The type of high priority best effort (BE_H) queue and low priority best effort (BE_L) queue is best effort (BE);

The type of the high priority background data (BK_H) queue and the low priority background data (BK_L) queue is background data.

Among them, the high-priority voice (VO_H) queue corresponds to one or more user-level voice data, the low-priority voice (VO_L) queue corresponds to one or more user-level voice data; the high-priority video (VI_H) queue corresponds to one or multiple user-level video data, the low-priority video (VI_L) queue corresponds to one or more user-level video data; the high-priority best-effort (BE_H) queue corresponds to one or more user-level best-effort data, The low-priority best-effort (BE_L) queue corresponds to one or more user-level best-effort data; the high-priority background data (BK_H) queue corresponds to one or more user-level background data, and the low-priority background data (BK_L ) queue corresponds to one or more user-level background data. Therefore, under the EDCA mechanism, there are 8 queues in total to control the transmission of terminal data.

In a specific implementation, the device of the present invention can be an Access Point (AP), and at this time, the receiving module 41, the adjusting module 42, and the sending module 43 can complete the adjustment and notification of the user level through the detection process of the AP. The details are as follows:

After the receiving module 41 of the AP receives the request for adjusting the user level, the AP changes the quality (QoS) version number in the next beacon frame (Beacon) message, and the other fields remain unchanged.

After receiving the Beacon, all terminals find that the QoS version number has changed, and will send a probe request (Probe request) message to the AP according to the protocol.

After the AP receives the Probe request, the sending module 43 only sends a probe response (Probe response) to the terminal that needs to adjust the user level, and carries the EDCA parameters and the user level modified by the adjustment module 42 in the Probe response, so that the terminal can obtain The distributed channel access parameters matching the user level do not respond to the Proberequest message AP of other terminals.

Thus, a terminal that subsequently obtains the distributed channel access parameters matching the user level can transmit uplink data through the adjusted distributed channel access parameters.

In some feasible implementation manners, when the search module 44 finds the transmission queue corresponding to the user level, the device in the embodiment of the present invention may also include (not shown):

a judging module, configured to judge whether the transmission queue corresponding to the user level can still store data at present; Send in the transmission queue corresponding to the user level; if the judgment is no, the allocation submodule 452 stores the data being transmitted by the terminal into the found transmission queue corresponding to the data priority Send in other transmit queues.

For example, the data being transmitted may be stored in a queue with a higher priority or in a queue with a lower priority among the transmission queues corresponding to the priority of the data for transmission. For another example, when the data being transmitted by the terminal is stored in other transmission queues for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored in the found transmission queue to send in. In specific determination, it may be determined whether the transmission queue can store data according to the capacity of the transmission queue and the scheduling policy. It should be noted that, in order to ensure the data quality of more users as much as possible without wasting resources, some or all of the data streams of users with high user-level requests are put into high-priority queues as much as possible through certain rules.

As can be seen from the above, in some feasible implementation manners of the present invention, according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, in the In the found transmission queue, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the found transmission queue for transmission. It can be seen that, after going through the method flow of the embodiment of the present invention, data of terminals of different user levels in the local area are transmitted through different transmission queues. The terminal equipment with a high user level can preferentially enjoy channel resources, and the experience of the user with a high user level is enhanced.

FIG. 5 is a schematic structural diagram of Embodiment 3 of the distributed channel access control device of the present invention. The difference between this embodiment and the embodiment in FIG. 3 is that it shows the composition structure of the hardware modules of the device. As shown in FIG. 5 , the distributed channel access control device of the present invention may include a hardware composition: a processor 51 and a sending device 52, wherein:

The processor 51 is configured to obtain the user level of the terminal and the data priority of the data being transmitted by the terminal. , and according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, find out the transmission queue corresponding to the data priority , searching for the transmission queue corresponding to the user level; and storing the data being transmitted by the terminal into the found transmission queue corresponding to the user level.

The sending means 52 is configured to send the data stored by the processor 51 in the transmission queue corresponding to the user level.

In a specific implementation, the distributed channel access control device of the present invention may be a wireless network access device such as an access point (Access Point, AP) that communicates with a terminal.

In the specific implementation, the processor 51 of the device in the embodiment of the present invention is also used to create multiple transmission queues, establish the corresponding relationship between the type of each transmission queue and the data priority, and establish the relationship between the transmission queues of each type and the user level. Correspondence; the number of transmission queues of each type is two or more, multiple transmission queues of the same type send the same type of data, and each transmission queue in multiple transmission queues of the same type corresponds to one or more user level.

In a specific implementation, the device in the embodiment of the present invention may be applicable to various wireless network environments (for example, a wireless local area network (WLAN). And in different network environments, the division mode of data priority and transmission queue is different. For example, with reference to FIG. ) queue, high priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H ) queue, low-priority background data (BK_L) queue, the priority of their sending data is from high to low.

Wherein, the type of high-priority voice (VO_H) queue and low-priority voice (VO_L) queue is voice (VO);

The type of high priority video (VI_H) queue and low priority video (VI_L) queue is video (VL);

The type of high priority best effort (BE_H) queue and low priority best effort (BE_L) queue is best effort (BE);

The type of the high priority background data (BK_H) queue and the low priority background data (BK_L) queue is background data.

Among them, the high-priority voice (VO_H) queue corresponds to one or more user-level voice data, the low-priority voice (VO_L) queue corresponds to one or more user-level voice data; the high-priority video (VI_H) queue corresponds to one or multiple user-level video data, the low-priority video (VI_L) queue corresponds to one or more user-level video data; the high-priority best-effort (BE_H) queue corresponds to one or more user-level best-effort data, The low-priority best-effort (BE_L) queue corresponds to one or more user-level best-effort data; the high-priority background data (BK_H) queue corresponds to one or more user-level background data, and the low-priority background data (BK_L ) queue corresponds to one or more user-level background data. Therefore, under the EDCA mechanism, there are 8 queues in total to control the sending of terminal data.

Therefore, the processor 51 can use the created result to perform a corresponding search.

In some feasible implementation manners, when the system is initialized, each terminal is assigned a corresponding user level, therefore, the processor 51 may search the queue according to the stored user level of the pre-assigned terminal.

In some feasible implementations, the user may temporarily request to increase or decrease the user level of the terminal for data needs. For example, when the network is congested, a user is willing to pay for a higher rate, and the user can click the acceleration button of the application to increase the user level. The user level is increased, or, if the package is about to be exceeded, and a user wants to temporarily reduce the rate, he can also click the deceleration button of the application to reduce the user level to save system traffic. Therefore, the processor 51 may search for a suitable queue for the user whose user level has been updated according to the user's request.

In some feasible implementations, the network side can also temporarily request to change the user level. For example, network resources are limited. When there are many high-priority users, the speed of other users needs to be reduced. At this time, the network side will actively reduce some terminals. user level. Therefore, the processor 51 may search for a suitable queue for the user whose user level has been updated according to the request from the network side.

In some feasible embodiments, different transmission queues and queues of transmission queues are divided by different distributed channel access parameters, for example, for the EDCA mechanism, including AIFSN (arbitration inter Framespacing number), ECWmin ( exponetn form of CWmin minimum contention window index form), ECWmax (exponent form of CWmax maximum contention window index form), TXOPlimit (transmission opportunity limit transmission opportunity limit) and ack-policy (ACK strategy).

AIFSN: WMM can configure different idle waiting time for different ACs. The larger the value of AIFSN, the longer the user's idle waiting time.

ECWmin and ECWmax: These two values determine the average backoff time. The larger the value, the longer the average backoff time for users.

TXOPLimit: The maximum time that a user can occupy the channel after a successful competition. The larger the value, the greater the channel time that the user can occupy at one time. If it is 0, only one message can be sent after each channel is occupied.

In some feasible implementation manners, when the processor 51 finds the transmission queue corresponding to the user level, the processor 51 of the device in the embodiment of the present invention is further configured to determine the transmission queue corresponding to the user level Whether the data can still be stored at present, if it is judged to be yes, store the data being transmitted by the terminal into the found transmission queue corresponding to the user level and send it; if it is judged to be no, store the data being transmitted by the terminal The transmitted data is stored in other transmission queues in the found transmission queue corresponding to the data priority for transmission.

For example, the data being transmitted may be stored in a queue with a higher priority or in a queue with a lower priority among the transmission queues corresponding to the priority of the data for transmission. For another example, when the data being transmitted by the terminal is stored in other transmission queues for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored in the found transmission queue to send in. In specific determination, it may be determined whether the transmission queue can store data according to the capacity of the transmission queue and the scheduling policy. It should be noted that, in order to ensure the data quality of more users as much as possible without wasting resources, some or all of the data streams of users with high user-level requests are put into high-priority queues as much as possible through certain rules.

As can be seen from the above, in some feasible implementation manners of the present invention, according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, in the In the found transmission queue, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the found transmission queue for transmission. It can be seen that after going through the method flow of the embodiment of the present invention, the data of terminals of different user levels in the local area are transmitted through different transmission queues. The terminal equipment with a high user level can preferentially enjoy channel resources, and the experience of the user with a high user level is enhanced.

FIG. 6 is a schematic structural diagram of Embodiment 4 of the distributed channel access control device of the present invention. The difference between this embodiment and the embodiment in FIG. 4 is that it shows the composition structure of the hardware modules of the device. As shown in FIG. 6, the distributed channel access control device of the present invention may include: a receiving device 61, a sending device 62 and a processor 63 in terms of hardware composition, wherein:

The receiving means 61 is configured to receive an adjustment request for adjusting the user level of the terminal;

The processor 63 is configured to adjust the user level of the terminal according to the request received by the receiving device 61, and adjust the distributed channel access parameters of the terminal according to the adjusted user level;

The sending device 62 is configured to notify the terminal of the adjustment result of the processor 63 to the user level and the distributed channel access parameters, so that the terminal obtains the distributed channel access parameters matching the user level .

Further, the processor 63 is also configured to obtain the user level of the terminal and the data priority of the data being transmitted by the terminal, and according to the obtained data priority, search for a transmission queue corresponding to the data priority, and According to the user level of the terminal, in the found transmission queue corresponding to the data priority, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the In the found transmission queue;

The sending means 62 is configured to send the data stored by the processor 63 in the transmission queue corresponding to the user level.

In a specific implementation, the distributed channel access control device of the present invention may be a wireless network access device such as an access point (Access Point, AP) that communicates with a terminal.

In the specific implementation, when the system is initialized, each terminal is assigned a corresponding user level. Therefore, in the process of data processing by the terminal, the possibility of adjusting the user level of the terminal may occur due to some reasons, for example, The user may temporarily request to increase or decrease the user level of the terminal for data needs. For example, when the network is congested, a user is willing to pay for a higher speed. Level request, at this time, what the receiving device 61 received was a request to increase the user level; or, when the package was about to exceed, and a user wanted to temporarily slow down the rate, he could also click the deceleration button of the application program and request to reduce the user level to save money. system traffic. Therefore, the receiving means 61 may receive a request for downgrading the user level. As another example, in some feasible implementations, the network side can also temporarily request to change the user level. For example, network resources are limited. When there are many high-priority users, the speed of other users needs to be reduced. At this time, the network side will actively request Lower user level for some terminals. Therefore, the receiving device 61 may receive a request sent by the network side to request to reduce the user level of the terminal.

In the specific implementation, the processor 63 of the embodiment of the present invention is also used to create multiple transmission queues, and establish the corresponding relationship between the type of each transmission queue and the data priority, and establish the corresponding relationship between the transmission queues of each type and the user level ; There are two or more transmission queues of each type, multiple transmission queues of the same type send the same type of data, and each transmission queue in multiple transmission queues of the same type corresponds to one or more user levels .

In a specific implementation, the device in the embodiment of the present invention may be applicable to various wireless network environments (for example, a wireless local area network (WLAN). And in different network environments, the division mode of data priority and transmission queue is different. For example, with reference to FIG. ) queue, high priority video (VI_H) queue, low priority video (VI_L) queue, high priority best effort (BE_H) queue, low priority best effort (BE_L) queue, high priority background data (BK_H ) queue, low-priority background data (BK_L) queue, the priority of their sending data is from high to low.

Wherein, the type of high-priority voice (VO_H) queue and low-priority voice (VO_L) queue is voice (VO);

The type of high priority video (VI_H) queue and low priority video (VI_L) queue is video (VL);

The type of high priority best effort (BE_H) queue and low priority best effort (BE_L) queue is best effort (BE);

The type of the high priority background data (BK_H) queue and the low priority background data (BK_L) queue is background data.

Among them, the high-priority voice (VO_H) queue corresponds to one or more user-level voice data, the low-priority voice (VO_L) queue corresponds to one or more user-level voice data; the high-priority video (VI_H) queue corresponds to one or multiple user-level video data, the low-priority video (VI_L) queue corresponds to one or more user-level video data; the high-priority best-effort (BE_H) queue corresponds to one or more user-level best-effort data, The low-priority best-effort (BE_L) queue corresponds to one or more user-level best-effort data; the high-priority background data (BK_H) queue corresponds to one or more user-level background data, and the low-priority background data (BK_L ) queue corresponds to one or more user-level background data. Therefore, under the EDCA mechanism, there are 8 queues in total to control the sending of terminal data.

In a specific implementation, the device of the present invention can be an Access Point (AP), and at this time, the receiving device 61, the processor 63, and the sending device 43 can complete the adjustment and notification of the user level through the detection process of the AP. The details are as follows:

After the receiving device 61 of the AP receives the request for adjusting the user level, the AP changes the quality (QoS) version number in the next beacon frame (Beacon) message, and the other fields do not change.

After receiving the Beacon, all terminals find that the QoS version number has changed, and will send a probe request (Probe request) message to the AP according to the protocol.

After the AP receives the Probe request, the sending device 62 only sends a probe response (Probe response) to the terminal that needs to adjust the user level, and carries the EDCA parameters and the user level modified by the processor 63 in the Probe response, so that the terminal can obtain The distributed channel access parameters matching the user level do not respond to the Proberequest message AP of other terminals.

Thus, a terminal that subsequently obtains the distributed channel access parameters matching the user level can transmit uplink data through the adjusted distributed channel access parameters.

In some feasible implementation manners, when the processor finds the transmission queue corresponding to the user level, the processor 63 in this embodiment of the present invention is also configured to determine whether the transmission queue corresponding to the user level is still Data can be stored, if the judgment is yes, store the data being transmitted by the terminal into the found transmission queue corresponding to the user level and send it; if the judgment is no, store the data being transmitted by the terminal Store it in other transmission queues in the transmission queue corresponding to the data priority found out and send it.

For example, the data being transmitted may be stored in a queue with a higher priority or in a queue with a lower priority among the transmission queues corresponding to the priority of the data for transmission. For another example, when the data being transmitted by the terminal is stored in other transmission queues for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored in the found transmission queue to send in. In specific determination, it may be determined whether the transmission queue can store data according to the capacity of the transmission queue and the scheduling strategy. It should be noted that, in order to ensure the data quality of more users as much as possible without wasting resources, some or all of the data streams of users with high user-level requests are put into high-priority queues as much as possible through certain rules.

As can be seen from the above, in some feasible implementation manners of the present invention, according to the data priority of the data being transmitted by the terminal, search for the transmission queue corresponding to the data priority; according to the user level of the terminal, in the In the found transmission queue, search for the transmission queue corresponding to the user level; and store the data being transmitted by the terminal into the found transmission queue for transmission. It can be seen that, after going through the method flow of the embodiment of the present invention, data of terminals of different user levels in the local area are transmitted through different transmission queues. The terminal equipment with a high user level can preferentially enjoy channel resources, and the experience of the user with a high user level is enhanced.

The above-listed are only preferred embodiments of the present invention, which of course cannot limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (8)

1. A method for controlling access to a distributed channel, comprising:

storing the data transmitted by the terminal into a corresponding transmission queue for sending according to the user level of the terminal and the data priority of the data transmitted by the terminal;

before storing the data being transmitted by the terminal into a corresponding transmission queue for transmission according to the user level of the terminal and the data priority of the data being transmitted by the terminal, the method further comprises the following steps: creating a plurality of transmission queues, and establishing a corresponding relation between each transmission queue and the data priority and the user level;

wherein the created transmission queues comprise a high-priority voice (VO _ H) queue, a low-priority voice (VO _ L) queue, a high-priority video (VI _ H) queue, a low-priority video (VI _ L) queue, a high-priority best effort (BE _ H) queue, a low-priority best effort (BE _ L) queue, a high-priority background data (BK _ H) queue and a low-priority background data (BK _ L) queue, and the priorities of the queues for transmitting data are changed from high to low.

2. The distributed channel access control method of claim 1, wherein before storing the data being transmitted by the terminal in the corresponding transmission queue for transmission according to the user level of the terminal and the data priority of the data being transmitted by the terminal, further comprising:

receiving a request for adjusting a user level of the terminal;

adjusting the user level of the terminal according to the request;

adjusting the distributed channel access parameters of the terminal according to the adjusted user level;

and informing the terminal of the adjustment result of the user level and the distributed channel access parameter so as to enable the terminal to obtain the distributed channel access parameter matched with the user level.

3. The distributed channel access control method of any one of claims 1-2, wherein, before storing the data being transmitted by the terminal into the corresponding transmission queue for transmission according to the user level of the terminal and the data priority of the data being transmitted by the terminal, determining whether the transmission queue can still store the data currently, and if so, storing the data being transmitted by the terminal into the transmission queue for transmission; if not, storing the data transmitted by the terminal into other transmission queues for transmission.

4. The distributed channel access control method according to claim 3, wherein when storing data being transmitted by the terminal in another transmission queue for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored for transmission.

5. A distributed channel access control device, comprising:

the terminal comprises an acquisition module, a transmission module and a processing module, wherein the acquisition module is used for acquiring the user level of the terminal and the data priority of the data transmitted by the terminal;

the distribution module is used for storing the data transmitted by the terminal into a corresponding transmission queue for transmission according to the user level and the data priority of the terminal acquired by the acquisition module;

wherein, still include:

the creating module is used for creating a plurality of transmission queues and establishing the corresponding relation between each transmission queue and the data priority and the user level;

the transmission queues created by the creation module comprise a high-priority voice (VO _ H) queue, a low-priority voice (VO _ L) queue, a high-priority video (VI _ H) queue, a low-priority video (VI _ L) queue, a high-priority best effort (BE _ H) queue, a low-priority best effort (BE _ L) queue, a high-priority background data (BK _ H) queue and a low-priority background data (BK _ L) queue, and the priorities of the transmission queues for transmitting data are changed from high to low.

6. The distributed channel access control device of claim 5, further comprising:

a receiving module, configured to receive an adjustment request for adjusting a user level of the terminal;

the adjusting module is used for adjusting the user level of the terminal according to the request received by the receiving module and adjusting the distributed channel access parameters of the terminal according to the adjusted user level;

and the sending module is used for informing the terminal of the adjustment result of the user level and the distributed channel access parameter by the adjustment module so as to enable the terminal to obtain the distributed channel access parameter matched with the user level.

7. The distributed channel access control device of any of claims 5-6, further comprising:

a determining module, configured to determine whether data can still be stored in the transmission queue currently before the allocating module stores the data being transmitted by the terminal into the corresponding transmission queue for transmission according to the user level and the data priority of the terminal acquired by the acquiring module;

the distribution module is specifically configured to store the data being transmitted by the terminal into the transmission queue for transmission when the determination result determined by the determination module is yes; and when the judgment result of the judgment module is negative, storing the data transmitted by the terminal into other transmission queues for transmission.

8. The distributed channel access control device according to claim 7, wherein when the allocation module stores data being transmitted by the terminal in another transmission queue for transmission, the data being transmitted by the terminal is preferentially stored in the transmission queue in which the data of the terminal is stored for transmission.