CN103945441B - The method and apparatus of adaptive adjustment qos parameter - Google Patents
The method and apparatus of adaptive adjustment qos parameter Download PDFInfo
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Abstract
The invention provides a kind of method and apparatus of adaptive adjustment qos parameter.Wherein, this method includes：The operational factor of wireless network is gathered according to the cycle of setting, operational factor includes：Represent the quene state index of AP data stacking degree, represent that AP eats dishes without rice or wine the performance figure of eating dishes without rice or wine of channel quality status, network service index；Judge whether the qos parameter for needing to adjust wireless network according to the operational factor of collection；If desired, adjusting AP and STA EDCA competitive channel parameters respectively according to above-mentioned operational factor.The present invention can preferably combine the resource that actual conditions adjust wireless network, improve the goodput of wireless network.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and apparatus of adaptive adjustment qos parameter.
Background technology
WLAN (Wireless Local Area Network, i.e. WLAN) refers to using the wireless skills of IEEE802.11
One group of computer and relevant device that art is interconnected.WLAN refers to the computer bureau for making transmission medium with wireless channel
Domain net, is important supplement and the extension of wired networking mode, and is increasingly becoming a vital composition in computer network
Part, is widely used in needing removable data to handle or can not carry out the field of physical transmission medium wiring.With
The formulation and development of IEEE802.11 wireless network standards, make radio network technique more ripe with it is perfect.And it is successfully wide
It is general to be applied to numerous industries, such as financial instrument, education, large enterprise, industrial and mineral harbour, government bodies, hotel, airport, army.
Product mainly includes：WAP, unlimited network interface card, wireless router, radio network gateway, wireless bridge etc..
WLAN is primarily present two kinds of frameworks, i.e. IBSS (Independent Basic Service Set, independent basic clothes
Business collection, also referred to as Ad-hoc) and BSS (Basic Service Set, Basic Service Set, also as Infrastructure).
In IBSS frameworks, transfer communication is directly carried out without specific equipment by wireless communication between user terminal.
It is required for being communicated by AP transfers in BSS frameworks, between user terminal, and can also be accessed by AP
Internet business.
IEEE802.11e defines the service quality (Quality-of-Service, QoS) of WLAN, such as right
Voice IP (voice-over IP) support.802.11e standards define " enhancing distributed coordination access " (EDCA,
Enhanced Distributed Channel Access) access mode extend DCF (Distributed
Coordination Function, distributed coordination function) agreement function, to provide improved access bandwidth and to subtract
The delay of high precedence communication is lacked.
EDCA specifies four kinds of access types, each type one class data of correspondence.Each access level is configured with four
Individual parameter：CWmin-- minimum competition windows；CWmax-- maximum contention windows；TXOP-- send opportunity is limited；AIFS-- is arbitrated
Interframe space.Meanwhile, it is that each class data set these parameters to allow network manager according to application combination and communication
Amount adjustment Internet resources.
In DCF applications, a website for possessing data to be sent will could be sent until media are idle.But, adopt
802.11e standards are used, this website only needs to wait for the extra period.The length of extra time section is according to the data to be sent
It is this data access class there is provided AIFS values based on this, to define the length of extra latency section depending on type.
For the data of voice access class, it is smaller that AIFS values should be set；For Email and the number of FTP classes
According to it is larger that AIFS values should be set.Voice requires that time delay is short.Small AIFS values mean that speech data can be than not
Too sensitive communication quickly starts the network competition in next stage.
After the AIFS values corresponding period, this website generates a random number between CWmin and CWmax
Word.The access class of high precedence should set low CWmin and low CWmax.
AIFS, CWmin and CWmax should be combined together and be configured.So, the data of high precedence are most of
In the case of can obtain access network authority.For high precedence data set AIFS values be added with CWmax values and
Should be more than for low precedence data set AIFS values be added with CWmin values and, so, the data of low precedence are just
It will not be blocked completely.
TXOP for an access class defines the maximum length once sent.If the data to be sent too greatly can not be
Sent in TXOP limitations, this website just several times sends this data.
Very little is limited for the TXOP of speech data, because VoP is very short.For FTP, Email and network
For data, it should set larger TXOP to limit, so, when data are sent, avoid the need for a data and send out several times
Send.
Current WiFi network carries out channel competition by the way of EDCA, and AP and STA (any wireless terminal device) are enjoyed
Identical channel competition parameter, i.e. identical channel competition chance.And in real network application, user applies to download industry more
Based on business, for example, video is seen, listen music, browse webpage, download mail etc..In the scene of the downlink business, upstream plant
It is all N number of STA, and downstream plant only has AP, so causes N：The 1 unbalanced problem of up-downgoing data.Meanwhile, under
In the scene of industry business, upstream data bag is smaller, and mainly in 200~400 bytes or so, and downlink data packet is larger, mainly exists
1400 bytes or so, and often significantly unnecessary uplink message is total for downlink message sum, so causes downlink data much big
In upstream data situation (often up-downgoing ratio be 1：10), so as to there are N：1 downstream transmission chance and 1:10 it is upper
The contradiction of downlink data amount, so as to cause the problem of WiFi network actual transmissions handling capacity is far below projected throughput.
The content of the invention
It is an object of the invention to provide a kind of method and apparatus of adaptive adjustment qos parameter, to solve above-mentioned ask
Topic.
A kind of method of adaptive adjustment qos parameter is provided in an embodiment of the present invention, including：According to the week of setting
Phase gathers the operational factor of wireless network, and operational factor includes：Represent the quene state index of AP data stacking degree, represent
AP eats dishes without rice or wine the performance figure of eating dishes without rice or wine of channel quality status, network service index；Needs are judged whether according to the operational factor of collection
Adjust the qos parameter of wireless network；If desired, adjusting AP and STA EDCA competitive channels respectively according to above-mentioned operational factor
Parameter.
Preferably, the operational factor for gathering wireless network according to the cycle of setting includes：AP is gathered within the cycle of setting
Caching send message queue and whether there is message, the non-NULL ratio or flat that caching sends message queue is counted according to collection result
Equal queue length, using non-NULL ratio or average queue length as AP quene state index；AP is gathered within the cycle of setting
The situation of message is sent, the numerical value that the sum of the frequency of failure collected divided by collection is obtained as AP quality of eating dishes without rice or wine refer to
Number；The quantity that each STA receives and dispatches message is gathered within the cycle of setting, the quantity of transmitting-receiving message is more than the STA of alive threshold
There is the STA that demand communicates, using the total network service index as wireless network for the STA for having demand communication.
Preferably, the above-mentioned operational factor according to collection judges whether that the qos parameter for needing to adjust wireless network includes：When
When quene state index is more than maximum queue state threshold, it is determined that needing to adjust the qos parameter of wireless network.
Preferably, the above-mentioned EDCA competitive channel parameters for adjusting AP and STA respectively according to operational factor include：When queue shape
The performance figure of eating dishes without rice or wine that state index is more than maximum queue state threshold and AP is less than when eating dishes without rice or wine quality threshold, improves AP TXOP
Value, reduces AP AIFS values, until quene state index is less than minimum quene state threshold value, recovers AP EDCA competitive channels ginseng
Number is default value；When the performance figure of eating dishes without rice or wine that quene state index is more than maximum queue state threshold and AP is more than quality of eating dishes without rice or wine
When threshold value and network service index are more than maximum network serving threshold, all STA CW values are reduced, until quene state index is small
In minimum quene state threshold value, and network service index is when being less than minimal network serving threshold, recovers all STA EDCA competitions
Channel parameter is default value；When the performance figure of eating dishes without rice or wine that quene state index is more than maximum queue state threshold and AP is more than sky
When mouth quality threshold and network service index are less than minimal network serving threshold, AP and all STA TXOP values are improved, AP is reduced
With all STA AIFS values, until quene state index is less than minimum quene state threshold value, recover AP and all STA EDCA
Competitive channel parameter is default value.
A kind of device of adaptive adjustment qos parameter is additionally provided in an embodiment of the present invention, including：Operational factor is adopted
Collect module, the operational factor of wireless network is gathered for the cycle according to setting, operational factor includes：Represent wireless access point AP
Data stacking degree quene state index, represent that the eat dishes without rice or wine performance figure of eating dishes without rice or wine of channel quality status, network services of AP refers to
Number；Judge module, the operational factor for being gathered according to operational factor acquisition module judges whether to need to adjust wireless network
Qos parameter；Qos parameter adjusting module, for when judge module judges to need adjustment qos parameter, being adopted according to operational factor
The operational factor of collection module collection adjusts AP and STA EDCA competitive channel parameters respectively.
Preferably, above-mentioned operational factor acquisition module includes：Quene state index determining unit, for the cycle in setting
Interior collection AP caching sends message queue and whether there is message, and the non-NULL that caching sends message queue is counted according to collection result
Ratio or average queue length, using non-NULL ratio or average queue length as AP quene state index；Eat dishes without rice or wine performance figure
Determining unit, for gathering the situation that AP sends message within the cycle of setting, by the frequency of failure collected divided by collection
The numerical value that sum is obtained as AP performance figure of eating dishes without rice or wine；Network service index determining unit, for being adopted within the cycle of setting
Collect the quantity that each STA receives and dispatches message, the STA that the quantity of transmitting-receiving message is more than alive threshold is the STA for having demand to communicate, and will be had
The STA of the demand communication total network service index as wireless network.
Preferably, above-mentioned judge module includes：Quene state index judging unit, for being more than most when quene state index
During big quene state threshold value, it is determined that needing to adjust the qos parameter of wireless network.
Preferably, above-mentioned qos parameter adjusting module includes：First qos parameter adjustment unit, for when quene state index
Performance figure of eating dishes without rice or wine more than maximum queue state threshold and AP is less than when eating dishes without rice or wine quality threshold, improves AP TXOP values, reduces
AP AIFS values, until quene state index is less than minimum quene state threshold value, the EDCA competitive channel parameters for recovering AP are silent
Recognize value；Second qos parameter adjustment unit, for being more than maximum queue state threshold and AP matter of eating dishes without rice or wine when quene state index
When volume index is more than eat dishes without rice or wine quality threshold and network service index and is more than maximum network serving threshold, all STA CW values are reduced,
It is extensive when quene state index is less than minimal network serving threshold less than minimum quene state threshold value, and network service index
Multiple all STA EDCA competitive channels parameter is default value；3rd qos parameter adjustment unit, for when quene state index it is big
It is more than in maximum queue state threshold and AP performance figure of eating dishes without rice or wine and eats dishes without rice or wine quality threshold and network service index is less than minimum net
During network serving threshold, AP and all STA TXOP values are improved, AP and all STA AIFS values are reduced, until quene state index
Less than minimum quene state threshold value, the EDCA competitive channels parameter for recovering AP and all STA is default value.
Method and apparatus provided in an embodiment of the present invention, the operational factor for gathering wireless network by periodicity can interpolate that
Whether the qos parameter of adjustment wireless network is needed, and when carrying out qos parameter adjustment, the identity to AP and STA is distinguished,
Operational factor according to collection adjusts AP and STA EDCA competitive channel parameters respectively, so just can preferably combine actual
Situation adjusts the resource of wireless network, improves the goodput of wireless network.
Brief description of the drawings
Fig. 1 shows the method flow diagram of adaptive adjustment qos parameter provided in an embodiment of the present invention；
Fig. 2 shows the method schematic diagram of adaptive adjustment qos parameter provided in an embodiment of the present invention；
Fig. 3 shows the apparatus structure block diagram of adaptive adjustment qos parameter provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail below by specific embodiment and with reference to accompanying drawing.
The embodiment of the present invention is by distinguishing AP and STA identity, while judging current WiFi network by automated intelligent
Running environment, adjust automatically network QoS parameter (EDCA contention parameters) is set so that WiFi network actual transmissions handling capacity is close
The handling capacity of meter, improves the handling capacity of WiFi network.
The method flow diagram of adaptive adjustment qos parameter shown in Figure 1, this method comprises the following steps：
Step S102, the operational factor of wireless network (referring mainly to WiFi network), the operation are gathered according to the cycle of setting
Parameter includes：Represent the quene state index of AP data stacking degree, represent that AP eats dishes without rice or wine the quality of eating dishes without rice or wine of channel quality status
Index and network service index；
Step S104, judges whether the qos parameter for needing to adjust the wireless network according to the above-mentioned operational factor of collection；
Step S106, if it is desired, adjust AP and STA EDCA competitive channel parameters respectively according to above-mentioned operational factor.
The operational factor that the method for the present embodiment gathers wireless network by periodicity is capable of deciding whether to need to adjust nothing
The qos parameter of gauze network, when carrying out qos parameter adjustment, the identity to AP and STA is distinguished, the operation according to collection
Parameter adjusts AP and STA EDCA competitive channel parameters respectively, and so just can preferably combine actual conditions adjusts wireless network
The resource of network, improves the goodput of wireless network.
When implementing, the operational factor that the above-mentioned cycle according to setting gathers wireless network can be in the following manner
Realize：
(1) caching that AP is gathered within the cycle of setting sends message queue with the presence or absence of message, is united according to collection result
Meter caching sends the non-NULL ratio or average queue length of message queue, using non-NULL ratio or average queue length as AP team
Row state indices；
(2) situation that AP sends message is gathered within the cycle of setting, by the total of the frequency of failure collected divided by collection
The obtained numerical value of number as AP performance figure of eating dishes without rice or wine；
(3) quantity that each STA receives and dispatches message is gathered within the cycle of setting, the quantity of transmitting-receiving message is more than alive threshold
STA be have demand communicate STA, using have demand communicate STA sum as wireless network network service index.
AP data stacking degree can be characterized in view of AP quene state, if AP has data stacking, illustrates AP
Interface-free resources can not meet its transmission demand, in this case need carry out wireless network qos parameter adjustment.Based on this,
Inventive embodiments are provided with a maximum queue state threshold, if quene state index exceedes the maximum queue state threshold,
Then illustrate that AP has data stacking.Therefore the above-mentioned operational factor according to collection judges whether the QoS ginsengs for needing to adjust wireless network
Number can include：When quene state index is more than maximum queue state threshold, it is determined that needing to adjust the QoS ginsengs of wireless network
Number.Which is realized simply, and is more conform with actual conditions.
During specific QoS adjustment, it can be adjusted according to the actual conditions of each operational factor, based on this, above-mentioned basis
The step of operational factor adjusts AP and STA EDCA competitive channel parameters respectively can include：
(1) when the performance figure of eating dishes without rice or wine that quene state index is more than maximum queue state threshold and AP is less than quality of eating dishes without rice or wine
During threshold value, AP TXOP values are improved, AP AIFS values are reduced, it is extensive until quene state index is less than minimum quene state threshold value
Multiple AP EDCA competitive channels parameter is default value；
(2) when the performance figure of eating dishes without rice or wine that quene state index is more than maximum queue state threshold and AP is more than quality of eating dishes without rice or wine
When threshold value and network service index are more than maximum network serving threshold, all STA CW values are reduced, until quene state index is small
In minimum quene state threshold value, and network service index is when being less than minimal network serving threshold, recovers all STA EDCA competitions
Channel parameter is default value；
(3) when the performance figure of eating dishes without rice or wine that quene state index is more than maximum queue state threshold and AP is more than quality of eating dishes without rice or wine
When threshold value and network service index are less than minimal network serving threshold, AP and all STA TXOP values are improved, AP are reduced and all
STA AIFS values, until quene state index is less than minimum quene state threshold value, recover AP and all STA EDCA competition letters
Road parameter is default value.
Illustrate：Can be specially AP cachings by quene state index when carrying out current WiFi network scene Recognition
The average queue length (queue_load) of message is sent, performance figure of eating dishes without rice or wine is specially the collision rate that AP sends message
(collision_rate), network service index is specially the active users or network user's number (active_sta_ of AP associations
num)；Wherein each design parameter is described as follows：
queue_load：It is mainly used to reflect that can current AP interface-free resources meet AP transmission demand, queue_
Load, which exists, represents that AP has data stacking, and interface-free resources can not meet transmission demand.In this case, it will trigger to WiFi's
Qos parameter tuning.Queue_load calculating can be used：Periodic samples are carried out according to the queue (queue) to AP, when
Have in queue in the presence of message, queue is regarded as into non-null states；Conversely, being queue dummy status.Complete certain use
After cycle, the number of times of queue non-NULLs is counted, and then counts queue non-NULL ratios, when the ratio is higher than a certain threshold value, is represented
Network downstream load height is, it is necessary to carry out qos parameter adjustment.
Collision_rate：It is mainly used to the quality condition of the current channel of eating dishes without rice or wine of reflection, collision rate height represents channel matter
Amount is poor (busy or interference is strong).Collision_rate calculating can be used：It is a number of by the progress of giving out a contract for a project to AP
Sampling, counts the number of times wherein failed, by taking the average value (frequency of failure/statistics number) of the frequency of failure to reflect collision
The situation of rate.It when collision rate exceedes certain threshold value, will assert that network collision probability is high, and then assert that network eats dishes without rice or wine to compete and swash
It is strong.
Active_sta_num：It is mainly used to the quantity for having the STA of communication requirement in this current WiFi network of reflection.STA
Quantity it is more, AP competition to channel ability it is lower, eat dishes without rice or wine competition it is fiercer, so as to need to adjust QoS accordingly
It is whole, make AP be easier to obtain channel resource.Active_sta_num calculating can be used：To in each STA certain times
Counting messages are received and dispatched, when receiving and dispatching message number more than certain threshold value, it is active STA to be considered as the STA.
For above-mentioned operational factor, the qos parameter tuning of current WiFi network scene can be using adaptive shown in Fig. 2
The method schematic diagram of qos parameter is adjusted, wherein, AP and STA use independent EDCA contention parameters, and Q refers to queue_load, P
Collision_rate is referred to, N refers to Active_sta_num；The corresponding threshold value of parameters is with QH=150, QL=50, Pth
=20%, NH=40, NLIllustrate, comprise the following steps that exemplified by=20：
(1) periodically (T=3-5min) gathers WiFi operational factor Q, P and N；
(2) when Q non-NULLs, and its value is more than max-thresholds QH, and P is less than threshold value PthWhen, it is believed that current WiFi network is in
Downlink traffic is far above the situation of uplink traffic, now, will strengthen AP channel competition ability, including improve AP TXOP values
(such as from 0 to 4ms), reduces AP AIFS values (such as from 3 to 2).Until Q non-NULLs, and its value is less than minimum threshold QLWhen, return
To default conditions, i.e., all EDCA contention parameters return to default value.
(3) when Q non-NULLs, and its value is more than max-thresholds QH, and P is more than threshold value PthWhen, and N is more than max-thresholds NHWhen,
Think that current WiFi network is in because user is excessive in net, cause the problem of downlink traffic is blocked, now, will reduce STA's
Channel competition ability, including improve STA CW (to 256).Until Q non-NULLs, and its value is less than minimum threshold QL, meanwhile, N is less than
Minimum threshold NLWhen, default conditions are returned to, i.e., all EDCA contention parameters return to default value.
(4) when Q non-NULLs, and its value is more than max-thresholds QH, and P is more than threshold value PthWhen, and N is less than minimum threshold NLWhen,
Think that current WiFi network is in excessive due to netting outer neighboring user, cause the problem of downlink traffic is blocked, now, will improve whole
The channel competition ability (AP and STA) of network, includes reduction AP and STA AIFS values (such as from 3 to 2), enhancing AP's and STA
TXOP values (AP expands to 4ms, and STA expands to 1ms).Until when Q non-NULLs, and its value is less than threshold value QLWhen, return to acquiescence shape
State, all EDCA contention parameters return to default value.
Corresponding to the above method, the embodiments of the invention provide a kind of device of adaptive adjustment qos parameter, referring to Fig. 3
Shown, the device is included with lower module：
Operational factor acquisition module 32, the operational factor of wireless network, operation ginseng are gathered for the cycle according to setting
Number includes：Represent the quene state index of the data stacking degree of wireless access point AP, represent that AP eats dishes without rice or wine channel quality status
Eat dishes without rice or wine performance figure, network service index；
Judge module 34, the operational factor for being gathered according to operational factor acquisition module 32 judges whether to need to adjust nothing
The qos parameter of gauze network；
Qos parameter adjusting module 36, for when judge module 34 judges to need adjustment qos parameter, being joined according to operation
The operational factor that number acquisition module 32 is gathered adjusts AP and wireless terminal device STA EDCA competitive channel parameters respectively.
The operational factor that the device of the present embodiment gathers wireless network by periodicity is capable of deciding whether to need to adjust nothing
The qos parameter of gauze network, when carrying out qos parameter adjustment, the identity to AP and STA is distinguished, the operation according to collection
Parameter adjusts AP and STA EDCA competitive channel parameters respectively, and so just can preferably combine actual conditions adjusts wireless network
The resource of network, improves the goodput of wireless network.
When implementing, operational factor acquisition module 32 can include with lower unit：
Quene state index determining unit, the caching for gathering AP within the cycle of setting sends whether message queue deposits
In message, non-NULL ratio or average queue length that caching sends message queue are counted according to collection result, by non-NULL ratio or
Average queue length as AP quene state index；
Performance figure of eating dishes without rice or wine determining unit, for gathering the situation that AP sends message within the cycle of setting, will be collected
The frequency of failure divided by collection the obtained numerical value of sum as AP performance figure of eating dishes without rice or wine；
Network service index determining unit, the quantity of message, transmitting-receiving are received and dispatched for gathering each STA within the cycle of setting
The STA that the quantity of message is more than alive threshold is the STA for having demand to communicate, using the sum for the STA for having demand communication as wirelessly
The network service index of network.
AP data stacking degree can be characterized in view of AP quene state, if AP has data stacking, illustrates AP
Interface-free resources can not meet its transmission demand, in this case need carry out wireless network qos parameter adjustment.Based on this, sentence
Disconnected module 34 includes：Quene state index judging unit, for when quene state index be more than maximum queue state threshold when, really
Surely the qos parameter of adjustment wireless network is needed.
According to the size of each operational factor, corresponding adjustable strategies can be taken.Based on this, above-mentioned qos parameter adjustment
Module 36 can include with lower unit：
First qos parameter adjustment unit, for being more than eating dishes without rice or wine for maximum queue state threshold and AP when quene state index
Performance figure be less than eat dishes without rice or wine quality threshold when, improve AP TXOP values, reduction AP AIFS values, until quene state index is less than
Minimum quene state threshold value, the EDCA competitive channels parameter for recovering AP is default value；
Second qos parameter adjustment unit, for being more than eating dishes without rice or wine for maximum queue state threshold and AP when quene state index
When performance figure is more than eat dishes without rice or wine quality threshold and network service index and is more than maximum network serving threshold, all STA CW is reduced
Value, when quene state index is less than minimal network serving threshold less than minimum quene state threshold value, and network service index,
The EDCA competitive channels parameter for recovering all STA is default value；
3rd qos parameter adjustment unit, for being more than eating dishes without rice or wine for maximum queue state threshold and AP when quene state index
When performance figure is more than eat dishes without rice or wine quality threshold and network service index and is less than minimal network serving threshold, AP and all STA is improved
TXOP values, AP and all STA AIFS values are reduced, until quene state index is less than minimum quene state threshold value, recovery AP
EDCA competitive channels parameter with all STA is default value.
Above example upstream plant and descending is set by distinguishing upstream plant and downstream plant (distinguishing AP and STA)
It is standby that independent EDCA contention parameters are respectively adopted；Gather network operational parameter in real time simultaneously, judge current by automated intelligent
The running environment of WiFi network, adjust automatically network QoS parameter (EDCA contention parameters), so as to optimize the utilization of Internet resources
Rate, improves the handling capacity of WiFi network.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step single integrated circuit module is fabricated to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (6)
1. a kind of method of adaptive adjustment service quality QoS parameter, it is characterised in that including：
The operational factor of wireless network is gathered according to the cycle of setting, the operational factor includes：Represent wireless access point AP
The quene state index of data stacking degree, represent that the AP eats dishes without rice or wine the performance figure of eating dishes without rice or wine of channel quality status, network service
Index；
The operational factor that cycle according to setting gathers wireless network includes：
The caching that the AP is gathered within the cycle of setting sends message queue with the presence or absence of message, and institute is counted according to collection result
Non-NULL ratio or average queue length that caching sends message queue are stated, the non-NULL ratio or the average queue length are made
For the quene state index of the AP；
The situation that the AP sends message is gathered within the cycle of the setting, by the total of the frequency of failure collected divided by collection
The obtained numerical value of number as the AP performance figure of eating dishes without rice or wine；
The quantity that each STA receives and dispatches message is gathered within the cycle of the setting, the quantity of the transmitting-receiving message, which is more than, enlivens threshold
The STA of value is the STA for having demand to communicate, and the network of the sum for the STA for having demand communication as the wireless network is taken
Business index；
The qos parameter for judging whether to need to adjust the wireless network according to the operational factor of collection；
If desired, adjusting the AP and wireless terminal device STA enhancing distributed coordination respectively according to the operational factor
Access EDCA competitive channel parameters.
2. according to the method described in claim 1, it is characterised in that judged whether to need to adjust according to the operational factor of collection
The qos parameter of the whole wireless network includes：
When the quene state index is more than maximum queue state threshold, it is determined that needing to adjust the QoS ginsengs of the wireless network
Number.
3. according to the method described in claim 1, it is characterised in that the AP and STA are adjusted according to the operational factor respectively
EDCA competitive channel parameters include：
When the performance figure of eating dishes without rice or wine that the quene state index is more than maximum queue state threshold and the AP is less than quality of eating dishes without rice or wine
During threshold value, the TXOP values of the AP are improved, the AIFS values of the AP are reduced, until the quene state index is less than minimum queue
State threshold, the EDCA competitive channels parameter for recovering the AP is default value；
When the performance figure of eating dishes without rice or wine that the quene state index is more than maximum queue state threshold and the AP is more than quality of eating dishes without rice or wine
When threshold value and the network service index are more than maximum network serving threshold, all STA CW values are reduced, until the queue shape
When state index is less than minimal network serving threshold less than minimum quene state threshold value, and the network service index, recover all
STA EDCA competitive channels parameter is default value；
When the performance figure of eating dishes without rice or wine that the quene state index is more than maximum queue state threshold and the AP is more than quality of eating dishes without rice or wine
When threshold value and the network service index are less than minimal network serving threshold, the TXOP values of the AP and all STA, reduction are improved
The AP and all STA AIFS values, until the quene state index is less than minimum quene state threshold value, recover the AP and
All STA EDCA competitive channels parameter is default value.
4. a kind of device of adaptive adjustment service quality QoS parameter, it is characterised in that including：
Operational factor acquisition module, the operational factor of wireless network, the operational factor bag are gathered for the cycle according to setting
Include：Represent the quene state index of the data stacking degree of wireless access point AP, represent that the AP eats dishes without rice or wine channel quality status
Eat dishes without rice or wine performance figure, network service index；
The operational factor acquisition module includes：
Quene state index determining unit, the caching for gathering the AP within the cycle of setting sends whether message queue deposits
In message, non-NULL ratio or average queue length that the caching sends message queue are counted according to collection result, will be described non-
Empty ratio or the average queue length as the AP quene state index；
Performance figure of eating dishes without rice or wine determining unit, the situation of message is sent for gathering the AP within the cycle of the setting, will be adopted
The numerical value that the frequency of failure divided by the sum of collection collected is obtained as the AP performance figure of eating dishes without rice or wine；
Network service index determining unit, the quantity of message is received and dispatched for gathering each STA within the cycle of the setting, described
The STA that the quantity of transmitting-receiving message is more than alive threshold is the STA for having demand to communicate, by the sum for the STA for having demand communication
It is used as the network service index of the wireless network；
Judge module, the operational factor for being gathered according to the operational factor acquisition module judges whether to need to adjust institute
State the qos parameter of wireless network；
Qos parameter adjusting module, for when the judge module judges to need to adjust the qos parameter, according to the fortune
The operational factor of row parameter collection module collection adjusts the AP and wireless terminal device STA enhancing distribution association respectively
Visit and investigate and ask EDCA competitive channel parameters.
5. device according to claim 4, it is characterised in that the judge module includes：
Quene state index judging unit, for when the quene state index is more than maximum queue state threshold, it is determined that needing
Adjust the qos parameter of the wireless network.
6. device according to claim 4, it is characterised in that the qos parameter adjusting module includes：
First qos parameter adjustment unit, for being more than maximum queue state threshold and the AP when the quene state index
Performance figure of eating dishes without rice or wine is less than when eating dishes without rice or wine quality threshold, improves the TXOP values of the AP, reduction AP AIFS values, until described
Quene state index is less than minimum quene state threshold value, and the EDCA competitive channels parameter for recovering the AP is default value；
Second qos parameter adjustment unit, for being more than maximum queue state threshold and the AP when the quene state index
When performance figure of eating dishes without rice or wine is more than eat dishes without rice or wine quality threshold and the network service index and is more than maximum network serving threshold, reduction is all
STA CW values, until the quene state index is less than minimum quene state threshold value, and the network service index is less than minimum
During network service threshold value, the EDCA competitive channels parameter for recovering all STA is default value；
3rd qos parameter adjustment unit, for being more than maximum queue state threshold and the AP when the quene state index
When performance figure of eating dishes without rice or wine is more than eat dishes without rice or wine quality threshold and the network service index and is less than minimal network serving threshold, improve described
AP and all STA TXOP values, reduce the AIFS values of the AP and all STA, until the quene state index is less than minimum
Quene state threshold value, the EDCA competitive channels parameter for recovering the AP and all STA is default value.
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| CN116016278A (en) * | 2022-12-22 | 2023-04-25 | 四川九州电子科技股份有限公司 | Dynamic adjustment method for EDCA parameters |
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Denomination of invention: Method and device for adaptively adjusting QoS parameters Effective date of registration: 20220728 Granted publication date: 20170908 Pledgee: Agricultural Bank of China Limited by Share Ltd. Chengdu Wenjiang branch Pledgor: CHENGDU SKSPRUCE TECHNOLOGY, Inc. Registration number: Y2022980011424 |