CN106332153A

CN106332153A - Method and device for controlling bandwidth in WLAN (wireless local area network)

Info

Publication number: CN106332153A
Application number: CN201510372945.0A
Authority: CN
Inventors: 王云贵
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2015-06-30
Filing date: 2015-06-30
Publication date: 2017-01-11
Anticipated expiration: 2035-06-30
Also published as: CN106332153B

Abstract

The invention discloses a method and a device for controlling the bandwidth in a WLAN (wireless local area network), so as to solve the problem that abandon of part of data packets causes a terminal to occupy the bandwidth of a channel, and the bandwidth of the channel is thus wasted. The method comprises steps: when a network device determines the bandwidth value occupied by a monitored service flow is larger than the maximum bandwidth threshold of the monitored object, at least one QoS parameter in a QoS parameter set of the monitored object is reduced, and the QoS parameter set after the QoS parameter is reduced is sent to the monitored object. Thus, when the bandwidth value occupied by the service flow is larger than the maximum bandwidth threshold, the QoS parameter of the monitored object is adjusted, the service flow transmission chance of the monitored object is thus adjusted, the chance of transmitting a data packet by the monitored object is restrained, the bandwidth value occupied by the service flow of the monitored object is further adjusted, the bandwidth value occupied by the service flow is controlled to be in a reasonable range, and basically, bandwidth control is realized.

Description

Band width control method in a kind of WLAN and device

Technical field

The present invention relates to communication technical field, particularly relate to the bandwidth in a kind of WLAN and control and device.

Background technology

WLAN (English: wireless local area network, WLAN) is widely applied to each Individual place.In a wlan, including WAP (English: access point, AP) and terminal. Wherein, terminal accesses network by WAP.WLAN can also increase wireless controller with management Access point.

In a wlan, in order to ensure terminal service-level agreement (English: service-level agreement, SLA) service quality in the range of, the network equipment such as wireless controller, WAP, need terminal The bandwidth of Business Stream consumption is managed, i.e. bandwidth controls.Such as, the network equipment is that each terminal unit is joined Putting maximum bandwidth, when this terminal sends Business Stream, the network equipment adds up the business in this terminal unit time Stream, and compare with maximum bandwidth, if the Business Stream in this terminal unit time is more than the maximum of this terminal Bandwidth, then lose divided data message in the middle part of Business Stream, thus accomplish bandwidth control.

But, when using aforesaid way to carry out bandwidth control, the on the one hand data message in the Business Stream of terminal It is already sent to the network equipment, occupies the interface-free resources of wireless medium, it addition, when the network equipment is lost After abandoning the part data message in data stream, can cause terminal retransmit data message, further busy channel, The bandwidth of channel is caused waste.

Summary of the invention

The embodiment of the present invention provides the band width control method in a kind of WLAN and device, in order to solve bandwidth In control mode, discarded part divided data message causes the bandwidth of terminal busy channel, causes the bandwidth wave of channel The problem taken.

The concrete technical scheme that the embodiment of the present invention provides is as follows:

First aspect, the band width control method in a kind of WLAN, including:

The network equipment determines the Business Stream occupied bandwidth value maximum belt more than described monitored object of monitored object Wide thresholding, the described network equipment reduces at least one in the service quality QoS parameter set of described monitored object Qos parameter, described qos parameter set includes that described monitored object is for different access type access channel Qos parameter, wherein, the described network equipment is access point AP or the wireless controller managing described AP, Monitored object is first terminal group or the first terminal associating described AP, and described first terminal group includes association One or more terminals of described AP, the one or more terminals in described first terminal group are that association is described All terminals of the virtual AP of AP；

Described qos parameter set after the described network equipment will reduce qos parameter is sent to described monitored object.

In conjunction with first aspect, in the first possible implementation of first aspect, at the described network equipment After reducing at least one qos parameter in the qos parameter set of described monitored object, also include:

The described network equipment determines that the Business Stream occupied bandwidth value of described monitored object is less than described monitored object Minimum bandwidth thresholding, the described network equipment increases having reduced in the qos parameter set of described monitored object At least one qos parameter, wherein, described minimum bandwidth thresholding is less than described maximum bandwidth thresholding, and increases After described qos parameter less than or equal to reduce before described qos parameter；

Described qos parameter set after the described network equipment will increase qos parameter is sent to described monitored object.

In conjunction with the first possible implementation of first aspect or first aspect, in the mode that the second is possible In,

Reduce described qos parameter, including following one or more: increase the arbitration in described qos parameter Interframe space number AIFSN, the exponential form competition window ECW increased in described qos parameter, and subtract Transmission opportunity TXOP in little described qos parameter limits.

In conjunction with first aspect and the second of first aspect, arbitrary in the possible implementation of the second , in the third possible mode of first aspect, the described network equipment reduce described qos parameter it Before, also include:

Determine that in described Business Stream, the access type of all data messages is identical；Reduce described qos parameter for only Reduce the qos parameter that the described access type of data message in Business Stream is corresponding.

In conjunction with any one in the third possible implementation of the first of first aspect and first aspect Individual, in the 4th kind of possible implementation of first aspect, when described monitored object is first terminal, The qos parameter set after qos parameter will be reduced and send extremely described first terminal, including:

Qos parameter set amendment message, described qos parameter set amendment message bag is sent to described first terminal Including the described qos parameter set after reducing qos parameter, described qos parameter set amendment message is the first beacon Frame or probing response frame actively；Wherein, the recipient address of described first beacon frame is described first terminal MAC address, the MAC Address of described first terminal is unicast address, described master Dynamic probing response frame be the described network equipment do not rely on probe request that described terminal sends actively to The probing response frame that described terminal sends；

When described monitored object is first terminal group, qos parameter set is sent to described first terminal group, Including:

Described AP broadcasts second beacon frame of described virtual AP, and described second beacon frame includes reducing QoS Described qos parameter set after parameter.

Second aspect, the bandwidth control apparatus in a kind of WLAN, the bandwidth in described WLAN controls dress Putting and realized by the network equipment, the described network equipment is access point AP or the wireless controller managing described AP, Including:

Processing unit, for determining that the Business Stream occupied bandwidth value of monitored object is more than described monitored object Big bandwidth threshold, reduces at least one QoS ginseng in the service quality QoS parameter set of described monitored object Number, described qos parameter set includes the described monitored object QoS for different access type access channel Parameter, wherein, monitored object is first terminal group or the first terminal associating described AP, and described first eventually End group includes the one or more terminals associating described AP, the one or more ends in described first terminal group End is all terminals of the virtual AP associating described AP；

Transmitting element, it is right that the described qos parameter set after reducing qos parameter is sent to described monitoring As.

In conjunction with second aspect, in the first possible implementation of second aspect, described processing unit, It is additionally operable to:

After at least one qos parameter in the qos parameter set reducing described monitored object, determine institute State the Business Stream occupied bandwidth value minimum bandwidth thresholding less than described monitored object of monitored object, increase described At least one qos parameter reduced in the qos parameter set of monitored object, wherein, described small band Before wide thresholding is less than or equal to reduce less than the described qos parameter after described maximum bandwidth thresholding, and increase Described qos parameter；

Described transmitting element, is additionally operable to the described qos parameter set after increasing qos parameter and is sent to described Monitored object.

In conjunction with the first possible implementation of second aspect or second aspect, at the second of second aspect In possible implementation, the described qos parameter of described reduction, including following one or more: increase described Arbitration inter-frame space number AIFSN in qos parameter, the exponential form increased in described qos parameter competition Window ECW, and reduce the transmission opportunity TXOP restriction in described qos parameter.

Arbitrary in conjunction with in the implementation that the first in second aspect and second aspect, the second are possible , in the third possible implementation of second aspect, described processing unit, it is additionally operable to: reducing Before described qos parameter, determine that in described Business Stream, the access type of all data messages is identical；

The described qos parameter of described reduction is the described access class only reducing the data message in described Business Stream The qos parameter that type is corresponding.

In conjunction with second aspect or second aspect first to any one in the third possible implementation, In 4th kind of possible implementation of second aspect, when described monitored object is first terminal, described When sending unit qos parameter set after reducing qos parameter to send to described first terminal, it is used for:

Qos parameter set amendment message, described qos parameter set amendment message bag is sent to described first terminal Including the described qos parameter set after reducing qos parameter, described qos parameter set amendment message is the first beacon Frame or probing response frame actively；Wherein, the recipient address of described first beacon frame is described first terminal MAC address, the MAC Address of described first terminal is unicast address, described master Dynamic probing response frame is that described device does not relies on the probe request of described terminal transmission actively to described The probing response frame that terminal sends；

When described monitored object is first terminal group, the described network equipment is AP, and described transmitting element exists When qos parameter set after reducing qos parameter sends to described first terminal group, it is used for:

Broadcast second beacon frame of described virtual AP, after described second beacon frame includes reducing qos parameter Described qos parameter set.

Using the band width control method in the WLAN of present invention offer, the network equipment determines the business of monitoring Stream occupied bandwidth value, more than the maximum bandwidth thresholding of monitored object, can reduce the qos parameter set of this monitored object In at least one qos parameter, and the qos parameter set after qos parameter will be reduced be sent to monitored object, So, use this band width control method, when Business Stream occupied bandwidth value is more than maximum bandwidth thresholding, adjust The qos parameter of whole monitored object, thus adjust the Business Stream transmission opportunity of monitored object, suppress monitored object The chance sent datagram, and then adjust monitored object Business Stream occupied bandwidth value, make Business Stream take band Width values controls, in the range of reasonably, fundamentally to realize bandwidth control, transmission can be avoided to exceed and preset band During the Business Stream of wide thresholding, abandon data message and cause the bandwidth waste of channel.

Accompanying drawing explanation

The network architecture schematic diagram of a kind of WLAN that Fig. 1 provides for the embodiment of the present invention；

The structural representation of a kind of EDCA parameter set element that Fig. 2 provides for the embodiment of the present invention；

The flow chart of the band width control method in a kind of WLAN that Fig. 3 provides for the embodiment of the present invention；

The idiographic flow of the band width control method in the first WLAN that Fig. 4 provides for our bright embodiment Figure；

The idiographic flow of the band width control method in the second WLAN that Fig. 5 provides for the embodiment of the present invention Figure；

The structural representation of the bandwidth control apparatus in a kind of WLAN that Fig. 6 provides for the embodiment of the present invention Figure；

The structural representation of a kind of network equipment that Fig. 7 provides for the embodiment of the present invention.

Detailed description of the invention

In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this Bright it is described in further detail.

The embodiment of the present invention provides a kind of band width control method and device, in order to solve in bandwidth control mode, Discarded part divided data message causes the bandwidth of terminal busy channel, the problem causing the bandwidth waste of channel.Its In, method and apparatus is based on same inventive concept, owing to the principle of method and device solution problem is similar, Therefore the enforcement of apparatus and method can repeat no more in place of repetition with cross-reference.

Traditionally, the network equipment is when carrying out bandwidth and controlling, it is determined that the Business Stream in the terminal unit time is more than The maximum bandwidth of this terminal, then lose the part data message in Business Stream, so, due to the business of terminal Stream has had been transferred to the network equipment, and the bandwidth of channel is the most occupied, even if abandoning also, It dones't help the situation, separately Outward, after losing part data message, can cause terminal continue retransmit data message, further busy channel, The bandwidth of channel is caused waste.In embodiments of the present invention, the network equipment determines that the Business Stream of monitoring takies Bandwidth value, more than the maximum bandwidth thresholding of monitored object, can reduce in the qos parameter set of this monitored object extremely A few qos parameter, and the qos parameter set after reducing qos parameter is sent to monitored object.So, When Business Stream occupied bandwidth value is more than maximum bandwidth thresholding, adjusts the qos parameter of monitored object, thus adjust The Business Stream transmission opportunity of whole monitored object, the chance that suppression monitored object sends datagram, and then adjust Monitored object Business Stream occupied bandwidth value, makes Business Stream occupied bandwidth value control in the range of reasonably, from root Realize bandwidth control on Ben, when can avoid transmitting the Business Stream exceeding pre-set bandwidths thresholding, abandon datagram Literary composition causes the bandwidth waste of channel.

The invention provides the band width control method in a kind of WLAN and device, the method and device permissible Being suitable for but be not limited in wlan network framework as shown in Figure 1, this network architecture includes controlled in wireless Device 101, WAP 102, and terminal 103 etc..Wherein,

Wireless controller 101, can be access network pass, the network switch, router etc., be responsible for control or Management WAP, it is also possible to WAP is carried out business configuration and radio-frequency configuration.

WAP 102, or be called for short access point, including website (English: station, STA) and via Wireless medium (wireless medium, WM) be the STA of association provide distribution service (English: Distribution service) access.

Terminal 103, can be mobile phone, computer, panel computer, personal digital assistant (English: Personal digital assistant, abbreviation: PDA), mobile internet device (English: mobile Internet Device, abbreviation: MID), wearable device and E-book reader (English: e-book reader) etc.. Terminal 103 is associated with WAP 102 as the STA in WLAN.

Can be (English: enhanced distributed channel by the distributed channel access strengthened in WLAN Access, EDCA) access mechanism dividing priority is provided.Use in the network of EDCA, wireless access Point sends the EDCA including service quality (English: Quality of Service, QoS) parameter set to terminal Parameter set element is (English: EDCA Parameter Set element).Wherein, qos parameter set includes Terminal is for the qos parameter of different access type (English: access category, AC), access type Including: (implication is do one's best (English: best effort)) to AC_BE, (implication is background to AC_BK (implication is video (English: video)) and AC_VO (contains for (English: background)), AC_VI Justice is speech business (voice)).The qos parameter of every kind of access type, such as exponential form competition window (English Literary composition: minimum dimension exponent form of contention window) and full-size, transmission opportunity (English Literary composition: transmission opportunitie, TXOP) restriction etc..So, by every kind of access type Qos parameter arranges different numerical value, and some multimedia real time business can be made (such as AC_VI, AC_VO The business of type) there is more opportunistic access channel, thus reduce the time delay of multimedia real time business, make many The data transmission of media real time business is more smooth, improves the experience of user.

Refering to shown in Fig. 2, EDCA parameter set element defines difference is set for different access type Qos parameter, the implication of the most each field is as follows.

Component identification (English: Element ID), it is unique mark of EDCA parameter set element, is used for Distinguish with other elements.

Length is (English: Length), to be the parameter length of EDCA parameter set element, do not include element mark Know and length field.

QoS Info, expression quality of service information (English: Quality of Service Information), In this field, include a sub-option, this sub-option be EDCA parameter set refresh counter (English: EDCA Parameter Set Update Count), it is used for notifying whether terminal EDCA parameter set element changes.

Wherein, this EDCA parameter set element also comprises the reference record field of every kind of access type, Mei Gecan Number record fields respectively define each qos parameter when terminal performs this access type, as it can be seen, The reference record field of each access type all comprises AC index (English: AC index, ACI)/secondary Cut out interframe space number (English: arbitration interframe space number, AIFSN), exponential form Competition window, transmission opportunity (English: transmission opportunity, TXOP) limit.Wherein:

ACI/AIFSN includes AIFSN.When AIFSN indicates terminal access network, at short interframe space The timeslot number that (English: short interframe space, SIFS) is delayed after the time again, this parameter value is the least, The time that terminal is waited by access channel is the shortest.

ECW is the contention window size of EDCA, and this value determines the size of terminal average backing off time, This value is the least, and the average backing off time of terminal is the shortest, and wherein, this ECW parameter includes that ECW is The full-size (ECWmax) of small size (ECWmin) and ECW；

TXOP restricted representation terminal takies the time restriction of wireless medium transmission data, and this value is the biggest, terminal The time that can continue busy channel is the longest.

The reference record field of each access type in EDCA parameter set cell can will comprise The qos parameters such as AISFN, ECW, TxOP, are referred to as qos parameter set.

EDCA parameter set element is sent to terminal by the network equipment.This EDCA parameter set element includes Having the network equipment is the qos parameter set processing each access type that terminal is arranged.The network equipment is different The qos parameter of access type configuration is different.Such as, for needing AC_VI and AC_VO of real-time Transmission Configure less AIFSN, ECWmin and ECWmax, and bigger TxOP, and be other access Type configuration bigger AIFSN, ECWmin and ECWmax, and less TxOP, so that AC_VI and AC_VO business has higher priority when access channel, and other business have relatively low Priority, meets the needs of real time business, it is thus achieved that better services are experienced.

Refering to shown in Fig. 3, the band width control method in a kind of WLAN that the embodiment of the present invention provides, should In the network equipment, such as wireless controller, WAP etc., the handling process of the method includes:

Step 301: the network equipment determines that the Business Stream occupied bandwidth value of monitored object is more than described monitored object Maximum bandwidth thresholding, the described network equipment reduce described monitored object qos parameter set at least one Qos parameter, described qos parameter set includes that described monitored object is for different access type access channel Qos parameter, wherein, the described network equipment is AP or the wireless controller managing described AP, and it is right to monitor As for first terminal group or the first terminal that associates described AP, described first terminal group includes associating described AP One or more terminals, the one or more terminals in described first terminal group are the void associating described AP Intend all terminals of AP.

The Business Stream occupied bandwidth value maximum belt more than this monitored object of monitored object is determined at the network equipment During wide thresholding, the network equipment can lose the part data message in this Business Stream, and this is identical with traditional way, This is repeated no more by the present invention.

Wherein, monitored object can be first terminal or first terminal group, and first terminal is to associate with AP Terminal, and first terminal group is the set of terminal associated with AP, the one or more ends in this first terminal group End is all terminals of the virtual AP of associated AP.

In actual wlan network, it will usually according to difference or the difference of business of user identity classification, Distinguishing multiple services sets, unique services sets mark that each services sets has correspondence is (English: service Set identifier, SSID), such as, the services sets accessed for client, SSID is SSID_Guest； For the services sets of employee access, SSID is SSID_Employ；For watching the services sets of Web TV, SSID is SSID_TV.

The upper multiple virtual AP, each virtual AP of can creating of AP has unique mark, i.e. basic service Set identifier (English: basic service set identifier, BSSID), this BSSID can be virtual AP Media interviews control (English: medium access control, MAC) address.Each virtual AP BSSID can generate a SSID, but each services sets can be generated by one or more virtual AP.

SSID and BSSID can be the same from terminal and be set to a set of terminal, it is also possible to by SSID It is the same from terminal and is set to a set of terminal.Terminal in i.e. one set of terminal is one virtual AP of association All terminals, or the terminal in a set of terminal is multiple virtual AP all associating identical SSID Terminal.

In the WLAN deploying set of terminal, the network equipment can be directed to a set of terminal distribution QoS Parameter set, so, in this set of terminal, each terminal can use same qos parameter access channel, and Not disposing in the wlan network of set of terminal, the network equipment is each terminal distribution qos parameter set.

Business Stream is that described monitored object generates the Business Stream sent to network side, or is that network is laterally described The Business Stream that monitored object sends, or sum of the two, this is not construed as limiting by the present invention.

The network equipment determines the Business Stream occupied bandwidth value of monitored object, including:

The network equipment determines within the unit interval, transmits the capacity of this Business Stream.

Optionally, before performing step 301, also include: the network equipment determines that the bandwidth of this monitored object is joined Confidence ceases.Wherein, this band width configuration information includes the maximum bandwidth thresholding of this monitored object, optionally also Minimum bandwidth thresholding can be comprised.

Optionally, this band width configuration information can be to arrange for all terminals that can associate this network equipment , it is also possible to it is to be respectively directed to different terminals or set of terminal setting.When band width configuration information is for not With terminal time, this band width configuration information also comprises the terminal iidentification of this terminal.When band width configuration information is pin When different set of terminal is respectively provided with, this band width configuration information also comprise this set of terminal SSID and/or BSSID。

The network equipment determines the Business Stream occupied bandwidth value maximum bandwidth more than this monitored object of monitored object Thresholding, now, in order to ensure the service quality in the range of SLA, needs to reduce the business of this monitored object Stream occupied bandwidth value, accordingly, it would be desirable to reduce the Business Stream transmission opportunity of this monitored object, i.e. reduces this monitoring At least one qos parameter in the qos parameter set of object.

Optionally, qos parameter is reduced, including following one or more:

Increase the AIFSN in described qos parameter, the ECW increased in described qos parameter, and reduce TXOP in described qos parameter limits.

Wherein, ECW includes ECWmin and ECWmax, therefore, when increasing or reduce ECW, Need to increase ECWmin and ECWmax simultaneously.

According to the above implication in EDCA field, when AIFSN indicates terminal access network, The timeslot number delayed the most again, this parameter value is the least, terminal by access channel waited time Between the shortest, therefore, reduce the Business Stream transmission opportunity of this monitored object, AIFSN can be increased, increase The time that terminal is waited by access channel；ECW determines the size of terminal average backing off time, this value The least, the average backing off time of terminal is the shortest, therefore, reduces the Business Stream transmission opportunity of this monitored object, ECW can be increased, increase the back off time of this terminal access channel；TXOP restricted representation terminal takies The time restriction of wireless medium transmission data, this value is the biggest, and terminal can continue the time of busy channel more Long, therefore, therefore, reduce the Business Stream transmission opportunity of this monitored object, TXOP can be reduced and limit, Reduce terminal and continue the time of busy channel.

Owing to qos parameter set includes the monitored object qos parameter for different access type access channel, Therefore, optionally, the qos parameter of access type each in qos parameter set is adjusted, increase or Reduce, it is ensured that when monitored object sends or receives the Business Stream of any access type, or monitored object is sent out When sending or receive the Business Stream of multiple access type, the Business Stream transmission opportunity of this monitored object can be reduced.

Optionally, before the network equipment reduces described qos parameter, also include:

Determine that in described Business Stream, the access type of all data messages is identical.

Reducing described qos parameter is the described access type pair only reducing the data message in described Business Stream The qos parameter answered.

Concrete, reduce described qos parameter, including following one or more: only increase described QoS ginseng The AIFSN of the described access type of the data message in Business Stream described in manifold, only increase described QoS The ECW of the described access type of the data message in Business Stream described in parameter set, and only reduce described The TXOP of the described access type of the data message in Business Stream described in qos parameter set limits.So, When monitored object sends or receives a kind of access type, reduce this monitored object industry for this access type Business streaming chance, in this manner it is ensured that the Business Stream transmission opportunity of other access types is constant.

Wherein it is determined that the access type of data message in Business Stream, including:

The network equipment, according to the priority of data message in Business Stream, determines the access type of this data message. Data message all comprises precedence field, for indicating the priority of this data message, such as COS (English: type of service, TOS), type service (English: class of service, COS), poor Sub-services business code point (English: differentiated service code point, DSCP) etc., all can use Priority in instruction data message.The priority that the network equipment and terminal are typically provided with in data message and The corresponding relation of access type, therefore, it can according to the priority value in data message, estimates that terminal is sent out Give the access type of this data message.

Such as COS priority span in MAC header is 0-7, and wherein COS priority value is The access type of 6,7 correspondences is AC_VO, and COS precedence field is 4, and the access type of 5 correspondences is AC_VI.The most such as DSCP class selector (English: class selector, CS) in IP heading Value includes CS0-CS6, and wherein, each CS value all may map to MAC header priority, e.g., MAC header priority value corresponding for CS0 is 0, and corresponding access type is that AC_BK, CS6 are corresponding MAC header priority value is 7, and corresponding access type is AC_VO.

Step 302: the qos parameter set after the network equipment will reduce qos parameter is sent to described monitored object.

Optionally, when described monitored object is first terminal, when performing step 302, including:

Qos parameter set amendment message, described qos parameter set amendment message bag is sent to described first terminal Including the described qos parameter set after reducing qos parameter, described qos parameter set amendment message is the first beacon Frame or probing response frame actively；Wherein, the recipient address of described first beacon frame is described first terminal MAC Address, the MAC Address of described first terminal is unicast address, the probe response of described active Frame is that the described network equipment does not relies on the probe request that described terminal sends and actively sends to described terminal Probing response frame.

Concrete, send qos parameter set amendment message to first terminal, including: send to first terminal and take Qos parameter set amendment message with EDCA parameter set element, this EDCA parameter set element includes institute State qos parameter set.

The wherein MAC Address that recipient address is described first terminal in the first beacon frame, this first letter Mark frame is clean culture beacon frame, so, even if other terminal is after receiving this clean culture beacon frame, and also will not be right This clean culture beacon frame processes, it is ensured that the purposiveness of amended qos parameter set, after making this adjustment Qos parameter set sends accurately to first terminal.

Generally, the network equipment, just can be to this terminal only after receiving the probe request of terminal Send corresponding probing response frame, and after probing response frame actively is without receiving probe request again, can Actively to send to terminal at any time, in this manner it is ensured that the network equipment is on the opportunity of appointment, it is not necessary to terminal triggers, Qos parameter set after this adjustment is sent accurately to first terminal.

Optionally, when described monitored object is first terminal group, when performing step 302, including:

AP broadcasts second beacon frame of described virtual AP, and described second beacon frame includes reducing qos parameter After described qos parameter set.

If the terminal in a set of terminal is all terminals of one virtual AP of association, then the broadcast of AP Second beacon frame of one virtual AP of frame, the second beacon frame includes the described QoS after reducing qos parameter Parameter set.If the terminal in a set of terminal is all ends of the multiple virtual AP associating identical SSID End, then respective second beacon frame of these virtual AP of the broadcast of AP, the SSID of the most each second beacon frame Identical and BSSID is different, each second beacon frame includes the described QoS ginseng after reducing qos parameter respectively Manifold.So, the qos parameter set after this adjustment is sent all terminals to first terminal group accurately.

After step 302, also include:

The network equipment determines the Business Stream occupied bandwidth value minimum bandwidth less than this monitored object of monitored object Thresholding, now, in order to ensure service transmission quality, needs to increase the Business Stream occupied bandwidth of this monitored object Value, accordingly, it would be desirable to increase the Business Stream transmission opportunity of this monitored object, i.e. increases the QoS of this monitored object At least one qos parameter in parameter set.

After at least one qos parameter in the qos parameter set reducing monitored object in step 301, Reduce the Business Stream transmission opportunity of this monitored object, in this way it is possible to the business of this monitored object can occur Stream occupied bandwidth value is less than the minimum bandwidth thresholding of monitored object, it is clear that reduce the business after qos parameter Streaming chance can not meet the transmission demand of business, accordingly, it would be desirable to carry out extensive to the qos parameter reduced Multiple, therefore, increase the qos parameter reduced, the qos parameter after increase needs less than or equal to reducing Front qos parameter.

Increase described qos parameter, including following one or more: reduce the AIFSN in described qos parameter, Reduce the ECW in described qos parameter, and increase the TXOP restriction in described qos parameter.

According to the above implication in EDCA field, when AIFSN indicates terminal access network, The timeslot number delayed the most again, this parameter value is the least, terminal by access channel waited time Between the shortest, therefore, increase the Business Stream transmission opportunity of this monitored object, AIFSN can be reduced, reduce The time that terminal is waited by access channel；ECW determines the size of terminal average backing off time, this value The least, the average backing off time of terminal is the shortest, therefore, increases the Business Stream transmission opportunity of this monitored object, ECW can be reduced, reduce the back off time of this terminal access channel；TXOP restricted representation terminal takies The time restriction of wireless medium transmission data, this value is the biggest, and terminal can continue the time of busy channel more Long, therefore, therefore, increase the Business Stream transmission opportunity of this monitored object, TXOP can be increased and limit, Increase terminal and continue the time of busy channel.

Owing to qos parameter set includes the monitored object qos parameter for different access type access channel, And when reducing qos parameter, the qos parameter of every kind of access type can be reduced, and increase QoS During parameter, at least one qos parameter reduced can only be increased.

Before the described network equipment increases described qos parameter, also include:

Determine that in described Business Stream, the access type of all data messages is identical；

Increasing described qos parameter is the described access type pair only increasing the data message in described Business Stream The qos parameter answered, specifically includes following one or more: only reduce industry described in described qos parameter set Business stream in data message described access type AIFSN, only reduce described in described qos parameter set The ECW of the described access type of the data message in Business Stream, and only increase in described qos parameter set The TXOP of the described access type of the data message in described Business Stream limits.So, send out at monitored object When sending or receive a kind of access type, increase this monitored object Business Stream conveyer for this access type Meeting, in this manner it is ensured that the Business Stream transmission opportunity of other access types is constant.

The network equipment will increase the qos parameter set after qos parameter be sent to the concrete steps of monitored object with It is identical that qos parameter set after the network equipment will reduce qos parameter in step 302 is sent to monitored object, This is repeated no more by the present invention.

Using the band width control method in the WLAN in the above embodiment of the present invention, the network equipment determines prison The Business Stream occupied bandwidth value of control, more than the maximum bandwidth thresholding of monitored object, can reduce this monitored object At least one qos parameter in qos parameter set, and the qos parameter set transmission after qos parameter will be reduced To monitored object, so, use this band width control method, in Business Stream occupied bandwidth value more than maximum belt During wide thresholding, adjust the qos parameter of monitored object, thus adjust monitored object (terminal or set of terminal) Business Stream transmission opportunity, suppress or promote terminal or chance that set of terminal sends datagram, and then adjust Terminal or set of terminal Business Stream occupied bandwidth value, make Business Stream occupied bandwidth value control in the range of reasonably, Fundamentally realize bandwidth control, when can avoid transmitting the Business Stream exceeding pre-set bandwidths thresholding, abandon number The bandwidth waste of channel is caused according to message.

Based on above example, present invention also offers the band width control method in a kind of WLAN, the party Method is for single terminal, and refering to shown in Fig. 4, wherein the network equipment is AP or the wireless controlled managing this AP Device processed, the idiographic flow of the method includes:

Step 401: the network equipment determines the Business Stream occupied bandwidth value that terminal is current.

The network equipment determines within the unit interval, transmits the capacity of this Business Stream.This Business Stream can be this end End generates the Business Stream sent to network side, or is the network Business Stream that laterally this terminal sends, or Sum of the two, this is not construed as limiting by the present invention.

Step 402: the network equipment determines the Business Stream occupied bandwidth value maximum bandwidth more than this terminal of terminal Thresholding, reduces the qos parameter in the qos parameter set of this terminal.

The network equipment determines the Business Stream occupied bandwidth value maximum bandwidth thresholding more than this terminal of this terminal, this Time, in order to ensure the service quality in the range of SLA, need to reduce the Business Stream occupied bandwidth value of this terminal, Accordingly, it would be desirable to reduce the Business Stream transmission opportunity of this terminal, i.e. reduce in the qos parameter set of this terminal extremely A few qos parameter.

Optionally, qos parameter is reduced, including following one or more:

Increase the AIFSN in the qos parameter of this terminal, the ECW increased in the qos parameter of this terminal, And reduce the TXOP restriction in the qos parameter of this terminal.

Optionally, qos parameter corresponding for access type each in the qos parameter set of terminal all can be entered Row reduces, or when the access type of all data messages is identical in determining this Business Stream, only adjusts this end The qos parameter that described in the qos parameter set of end, the described access type of the data message in Business Stream is corresponding.

Step 403: the network equipment will reduce qos parameter by the first beacon frame or probing response frame actively After qos parameter set send to this terminal.

The media interviews that recipient address is described first terminal of described first beacon frame control MAC ground Location, the MAC Address of described first terminal is unicast address.Described first beacon frame is also called clean culture beacon Frame.

Concrete, when performing step 403, send the first letter carrying EDCA parameter set element to terminal Mark frame or probing response frame actively, this EDCA parameter set element includes the QoS after reducing qos parameter Parameter set.

The wherein MAC Address that recipient address is this terminal in the first beacon frame, so, other terminal Even if after receiving this first beacon frame, also this first beacon frame will not be processed, after making this adjustment Qos parameter set send accurately to this terminal.

Generally, the network equipment, just can be to this terminal only after receiving the probe request of terminal Send corresponding probing response frame, and after probing response frame actively is without receiving probe request again, can Actively to send to terminal at any time, in this manner it is ensured that the network equipment is on the opportunity of appointment, it is not necessary to terminal triggers, Qos parameter set after this adjustment is sent accurately to terminal.

Qos parameter set after terminal reduction qos parameter in receiving step 403, according to therein Qos parameter access channel, reduces the Business Stream transmission opportunity of this terminal, and the portfolio i.e. reducing terminal accounts for Use bandwidth value.

Step 404: the network equipment determines the Business Stream occupied bandwidth value that terminal is current.

After terminal reduces Business Stream transmission opportunity, the network equipment continues this terminal current traffic determined Occupied bandwidth value.

Step 405: the network equipment determines the Business Stream occupied bandwidth value minimum bandwidth less than this terminal of terminal Thresholding, increases the qos parameter reduced in the qos parameter set of this terminal.

The network equipment determines the Business Stream occupied bandwidth value minimum bandwidth thresholding less than this terminal of this terminal, this Time, in order to ensure service transmission quality, need to increase the Business Stream occupied bandwidth value of this terminal, therefore, need Increase the Business Stream transmission opportunity of this terminal, i.e. increase at least one in the qos parameter set of this terminal Qos parameter.

When the network equipment determines the minimum bandwidth thresholding that the Business Stream occupied bandwidth value of terminal is less than this terminal, table Show that the Business Stream transmission opportunity after reducing qos parameter can not meet the transmission demand of business, accordingly, it would be desirable to The qos parameter reduced is recovered.Before qos parameter set after i.e. increasing can not be more than reducing Former qos parameter.

Optionally, qos parameter is increased, including following one or more:

Reduce the AIFSN in the qos parameter of this terminal, the ECW reduced in the qos parameter of this terminal, And increase the TXOP restriction in the qos parameter of this terminal.

Optionally, can be by the QoS reduced corresponding for access type each in the qos parameter set of terminal Parameter all reduces, or when in determining this Business Stream, the access type of all data messages is identical, only The described access type of the data message increased described in the qos parameter set of this terminal in Business Stream is corresponding The qos parameter reduced.

Step 406: the network equipment will increase qos parameter by the first beacon frame or probing response frame actively After qos parameter set send to this terminal.

After step 406, the network equipment may proceed to the Business Stream occupied bandwidth value according to this terminal and maximum belt Wide thresholding, minimum bandwidth thresholding adjust the qos parameter in terminal qos parameter set, but adjust QoS ginseng Can not be more than initial qos parameter after number.So, the network equipment can pass through Business Stream occupied bandwidth value, Adjust the qos parameter of terminal, thus adjust the Business Stream transmission opportunity of terminal, suppress or promote terminal to send The chance of data message, and then adjust terminal service stream occupied bandwidth value, make Business Stream occupied bandwidth value control In the range of reasonably, fundamentally realize bandwidth control, it is to avoid transmission exceedes the industry of pre-set bandwidths thresholding During business stream, abandon data message and cause the bandwidth waste of channel.

Based on above example, present invention also offers the band width control method in a kind of WLAN, the party Method is for set of terminal, and refering to shown in Fig. 5, wherein the network equipment is AP or the controlled in wireless managing this AP Device, the idiographic flow of the method includes:

In actual wlan network, it will usually according to difference or the difference of business of user identity classification, Distinguishing multiple set of terminal, each set of terminal has unique SSID of correspondence.Disposing multiple service groups Time, optionally, multiple virtual access point, each virtual access point and one can be created on WAP Individual set of terminal unique match, wherein, each virtual access point also has and uniquely identifies BSSID, this BSSID Can be the MAC Address of virtual access point, it is clear that the MAC Address of each virtual access point mates only The SSID of one set of terminal of.

Step 501: the network equipment determines the Business Stream occupied bandwidth value that a set of terminal is current.

The network equipment determines within the unit interval, transmits the capacity of this Business Stream.This Business Stream can be this end In end group, all terminals generate the Business Stream sent to network side, or are that network this this set of terminal lateral sends Business Stream, or sum of the two, this is not construed as limiting by the present invention.

Step 502: the network equipment determines that the Business Stream occupied bandwidth value of this set of terminal is more than this set of terminal Big bandwidth threshold, reduces the qos parameter in the qos parameter set of this set of terminal.

The network equipment determines the Business Stream occupied bandwidth value maximum bandwidth door more than this set of terminal of this set of terminal Limit, now, in order to ensure the service quality in the range of SLA, needs the Business Stream reducing this set of terminal to account for With bandwidth value, accordingly, it would be desirable to reduce the Business Stream transmission opportunity of this set of terminal, i.e. reduce this set of terminal At least one qos parameter in qos parameter set.

Optionally, qos parameter is reduced, including following one or more:

Increase the AIFSN in the qos parameter of this set of terminal, increase in the qos parameter of this set of terminal ECW, and reduce the TXOP restriction in the qos parameter of this set of terminal.

Optionally, can be equal by qos parameter corresponding for access type each in the qos parameter set of set of terminal Reduce, or when the access type of all data messages is identical in determining this Business Stream, only adjusting should The QoS that the described access type of the data message in Business Stream described in the qos parameter set of set of terminal is corresponding Parameter.

Step 503: the qos parameter set after the network equipment will reduce qos parameter by the second beacon frame sends To this set of terminal.

If the terminal in a set of terminal is all terminals of one virtual AP of association, then the broadcast of AP Second beacon frame of this virtual AP, the second beacon frame includes the described QoS after reducing qos parameter Parameter set.If the terminal in a set of terminal is all ends of the multiple virtual AP associating identical SSID End, then respective second beacon frame of these virtual AP of the broadcast of AP, the SSID of the most each second beacon frame Identical and BSSID is different, each second beacon frame includes the described QoS ginseng after reducing qos parameter respectively Manifold.

Concrete, when performing step 503, carry the first of EDCA parameter set element to set of terminal broadcast Beacon frame, this EDCA parameter set element includes the qos parameter set after reducing qos parameter.

In set of terminal, all terminals reduce the qos parameter set after qos parameter in receiving step 503, According to qos parameter access channel therein, reduce the Business Stream transmission opportunity of each terminal in set of terminal, i.e. Reduce the portfolio occupied bandwidth value of set of terminal.

Step 504: the network equipment determines the Business Stream occupied bandwidth value that set of terminal is current.

After set of terminal reduces Business Stream transmission opportunity, the network equipment continues the current industry of this set of terminal determined Business amount occupied bandwidth value.

Step 505: the network equipment determines the Business Stream occupied bandwidth value small band less than this terminal of set of terminal Wide thresholding, increases the qos parameter reduced in the qos parameter set of this set of terminal.

The network equipment determines the Business Stream occupied bandwidth value minimum bandwidth door less than this set of terminal of this set of terminal Limit, now, in order to ensure service transmission quality, needs to increase the Business Stream occupied bandwidth value of this set of terminal, Accordingly, it would be desirable to increase the Business Stream transmission opportunity of this set of terminal, i.e. increase in the qos parameter set of this set of terminal At least one qos parameter.

The network equipment determines the Business Stream occupied bandwidth value minimum bandwidth thresholding less than this set of terminal of set of terminal Time, represent that the Business Stream transmission opportunity after reducing qos parameter can not meet the transmission demand of business, therefore, Need the qos parameter reduced is recovered.Qos parameter set after i.e. increasing can not be more than reduction Front former qos parameter.

Optionally, qos parameter is increased, including following one or more:

Reduce the AIFSN in the qos parameter of this set of terminal, reduce in the qos parameter of this set of terminal ECW, and increase the TXOP restriction in the qos parameter of this set of terminal.

Optionally, can be by the QoS reduced corresponding for access type each in the qos parameter set of set of terminal Parameter all reduces, or when in determining this Business Stream, the access type of all data messages is identical, only The reduction of the described correspondence of the data message increased described in the qos parameter set of this set of terminal in Business Stream Qos parameter.

Step 506: the qos parameter set after the network equipment will increase qos parameter by beacon frame sends to being somebody's turn to do Set of terminal.

After step 506, the network equipment may proceed to the Business Stream occupied bandwidth value according to this set of terminal with maximum Bandwidth threshold, minimum bandwidth thresholding adjust the qos parameter in the qos parameter set of set of terminal, but adjust Can not be more than initial qos parameter after qos parameter.So, the network equipment can take band by Business Stream Width values, adjusts the qos parameter of this set of terminal, thus adjusts the Business Stream transmission opportunity of this set of terminal, suppression Or promote the chance that terminal sends datagram, and then adjust set of terminal Business Stream occupied bandwidth value, make business Stream occupied bandwidth value controls, in the range of reasonably, fundamentally to realize bandwidth control, it is to avoid transmission exceedes During the Business Stream of pre-set bandwidths thresholding, abandon data message and cause the bandwidth waste of channel.

Based on above example, present invention also offers the bandwidth control apparatus in a kind of WLAN, described Bandwidth control apparatus in WLAN is realized by the network equipment, and the described network equipment is AP or management is described The wireless controller of AP, refering to shown in Fig. 6, this device 600 includes: processing unit 601, and sends Unit 602, wherein,

Processing unit 601, for determining that the Business Stream occupied bandwidth value of monitored object is more than described monitored object Maximum bandwidth thresholding, reduce at least one QoS in the service quality QoS parameter set of described monitored object Parameter, described qos parameter set includes the described monitored object QoS for different access type access channel Parameter, wherein, monitored object is first terminal group or the first terminal associating described AP, and described first eventually End group includes the one or more terminals associating described AP, the one or more ends in described first terminal group End is all terminals of the virtual AP associating described AP；

Transmitting element 602, the described qos parameter set after reducing qos parameter is sent to described monitoring Object.

Optionally, described processing unit 601, it is additionally operable to:

Described transmitting element 602, is additionally operable to the described qos parameter set after increasing qos parameter and is sent to institute State monitored object.

Optionally, the described qos parameter of described reduction, including following one or more: increase described QoS Arbitration inter-frame space number AIFSN in parameter, the exponential form competition window increased in described qos parameter ECW, and reduce the transmission opportunity TXOP restriction in described qos parameter.

Optionally, described processing unit 601, it is additionally operable to:

Before reducing described qos parameter, determine the access type phase of all data messages in described Business Stream With；

Optionally, when described monitored object is first terminal, described transmitting element 602 will reduce QoS When qos parameter set after parameter sends to described first terminal, it is used for:

When described monitored object is first terminal group, the described network equipment is AP, described transmitting element 602 When qos parameter set after reducing qos parameter sends to described first terminal group, it is used for:

In the embodiment of the present invention, the division to unit is schematic, is only a kind of logic function and divides, real It can be same for can having other dividing mode, the such as first acquiring unit and second acquisition unit when border realizes One acquiring unit or different acquiring units, or some features can ignore, or do not perform.It addition, Each functional unit in each embodiment of the application can be integrated in a processing unit, it is also possible to is each Unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated Unit both can realize to use the form of hardware, it would however also be possible to employ the form of SFU software functional unit realizes.

If described integrated unit realizes and as independent production marketing using the form of SFU software functional unit Or when using, can be stored in a computer read/write memory medium.The technical scheme of the application complete Portion or part can embody with the form of software product, and this computer software product is stored in a storage In medium, including some instructions with so that computer equipment (can be personal computer, server, Or the network equipment etc.) or processor perform all or part of step of method described in the embodiment of the present application.And Aforesaid storage medium includes: flash disk is (English: flash memory disk), portable hard drive etc. is various can To store the medium of program code.

Based on above example, present invention also offers a kind of network equipment, the network equipment is access point AP Or manage the wireless controller of described AP, refering to shown in Fig. 7, this network equipment 700 includes: transceiver 701, processor 702 and memorizer 703, wherein:

Transceiver 701, processor 702 and memorizer 703 are connected with each other.

Transceiver 701 communicates for terminal or the set of terminal of association, as received terminal or the industry of set of terminal Business stream, sends qos parameter set etc. to terminal or terminal.

Processor 702 is for realizing the side that the bandwidth in the WLAN shown in embodiment of the present invention Fig. 3 controls Method, including:

Determine the Business Stream occupied bandwidth value maximum bandwidth thresholding more than described monitored object of monitored object, subtract At least one qos parameter in the service quality QoS parameter set of little described monitored object, described QoS joins Manifold includes the described monitored object qos parameter for different access type access channel, wherein, described Monitored object is first terminal group or the first terminal associating described AP, and described first terminal group includes association One or more terminals of described AP, the one or more terminals in described first terminal group are that association is described All terminals of the virtual AP of AP；

Described qos parameter set after reducing qos parameter is sent to described monitored object.

Optionally, after at least one qos parameter in the qos parameter set reducing described monitored object, Also include:

Determine the Business Stream occupied bandwidth value minimum bandwidth door less than described monitored object of described monitored object Limit, increases at least one qos parameter reduced in the qos parameter set of described monitored object, wherein, Described minimum bandwidth thresholding be less than described maximum bandwidth thresholding, and increase after described qos parameter less than or etc. Described qos parameter before reducing；

Described qos parameter set after increasing qos parameter is sent to described monitored object.

Optionally, reduce described qos parameter, including following one or more: increase described qos parameter In arbitration inter-frame space number AIFSN, the exponential form competition window ECW that increases in described qos parameter, And reduce the transmission opportunity TXOP restriction in described qos parameter；

Optionally, before reducing described qos parameter, also include:

Optionally, when described monitored object is first terminal, by the qos parameter after reduction qos parameter Collection sends extremely described first terminal, including:

This network equipment 700 also includes memorizer 703, is used for depositing program etc..Specifically, program is permissible Including program code, this program code includes computer-managed instruction.Memorizer 704 may comprise to be deposited at random Access to memory (random access memory, RAM), it is also possible to also include nonvolatile memory (non-volatile memory), for example, at least one disk memory.Processor 702 performs memorizer 704 application programs deposited, it is achieved the as above band width control method in WLAN.

The invention provides the band width control method in a kind of WLAN and device, the network equipment determines monitoring Business Stream occupied bandwidth value more than the maximum bandwidth thresholding of monitored object, the QoS of this monitored object can be reduced At least one qos parameter in parameter set, and the qos parameter set after qos parameter will be reduced be sent to prison Control object, so, uses this band width control method, in Business Stream occupied bandwidth value more than maximum bandwidth door In limited time, adjust the qos parameter of monitored object, thus adjust the Business Stream transmission opportunity of monitored object, suppression The chance that monitored object sends datagram, and then adjust monitored object Business Stream occupied bandwidth value, make business Stream occupied bandwidth value controls, in the range of reasonably, fundamentally to realize bandwidth control, and transmission can be avoided super When crossing the Business Stream of pre-set bandwidths thresholding, abandon data message and cause the bandwidth waste of channel.

Although having been described for embodiments of the invention, but those skilled in the art once know basic wound The property made concept, then can make other change and amendment to these embodiments.So, claims are anticipated It is intended to be construed to include embodiments of the invention and fall into all changes and the amendment of right.

Claims

1. the band width control method in a WLAN, it is characterised in that including:

2. the method for claim 1, it is characterised in that reduce described prison at the described network equipment After at least one qos parameter in the qos parameter set of control object, also include:

3. method as claimed in claim 1 or 2, its feature is being,

4. the method as described in any one of claim 1-3, it is characterised in that subtract at the described network equipment Before little described qos parameter, also include:

5. the method as described in any one of claim 1-4, it is characterised in that when described monitored object is During first terminal, the qos parameter set after qos parameter will be reduced and send extremely described first terminal, including:

6. the bandwidth control apparatus in a WLAN, it is characterised in that the bandwidth in described WLAN Controlling device to be realized by the network equipment, the described network equipment is access point AP or manages the wireless of described AP Controller, including:

7. device as claimed in claim 6, it is characterised in that

Described processing unit, is additionally operable to: at least one in the qos parameter set reducing described monitored object After qos parameter, determine that the Business Stream occupied bandwidth value of described monitored object is less than described monitored object Little bandwidth threshold, increases at least one QoS the reduced ginseng in the qos parameter set of described monitored object Number, wherein, described minimum bandwidth thresholding is less than the described QoS after described maximum bandwidth thresholding, and increase Parameter is less than or equal to the described qos parameter before reducing；

Device the most as claimed in claims 6 or 7, its feature is being, the described QoS of described reduction joins Number, including following one or more: increase the arbitration inter-frame space number AIFSN in described qos parameter, Increase the exponential form competition window ECW in described qos parameter, and reduce in described qos parameter Transmission opportunity TXOP limits.

9. the device as described in any one of claim 6-8, it is characterised in that

Described processing unit, is additionally operable to: before reducing described qos parameter, determine institute in described Business Stream The access type having data message is identical；

10. the device as described in any one of claim 6-9, it is characterised in that when described monitored object is During first terminal, described transmitting element sends to the most described the will reduce the qos parameter set after qos parameter During one terminal, it is used for: