CN101651967A - Method and equipment for adjusting flow speed in wireless local area network - Google Patents
Method and equipment for adjusting flow speed in wireless local area network Download PDFInfo
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- CN101651967A CN101651967A CN200910176762A CN200910176762A CN101651967A CN 101651967 A CN101651967 A CN 101651967A CN 200910176762 A CN200910176762 A CN 200910176762A CN 200910176762 A CN200910176762 A CN 200910176762A CN 101651967 A CN101651967 A CN 101651967A
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Abstract
The invention discloses a method for adjusting flow speed in a wireless local area network, which comprises the following steps: obtaining a channel occupancy rate; dynamically adjusting an actual flow threshold of a wireless terminal according to the channel occupancy rate; and carrying out speed restriction processing for the flow speed of the wireless terminal according to the actual flow threshold of the wireless terminal. The invention realizes the stable operation of a wireless network, so that all wireless terminals can normally use the wireless network.
Description
Technical field
The present invention relates to communication technical field, particularly relate to the method and apparatus of adjusting flow speed in a kind of WLAN (wireless local area network).
Background technology
WLAN (Wireless Local Area Networks, WLAN (wireless local area network)) provides a kind of wireless connections service of local area network (LAN), wireless data access at a high speed can be provided in small range, be present IT (Information Technology, information technology) one of relatively popular technology of industry also is popular wireless access way.Compare with traditional line access mode that has, WLAN (wireless local area network) makes the use of network freer, thoroughly broken away from the constraint of cable and port position, and WLAN (wireless local area network) has and is easy to carry, the advantage that is easy to move, removed or reduced numerous and diverse network layout from, only need lay one or more AP (Access Point, access point) equipment and just can set up the LAN that covers whole building or area.Wherein, the important composition equipment that this AP equipment is WLAN (wireless local area network), be a wireless transmitting-receiving equipments, the data transaction that receives from cable network (for example Internet) can be become wireless signal to send, the wireless signal that receives is converted to data and is forwarded to cable network.And the constructed WLAN (wireless local area network) of WLAN technology as replenishing of cable network, has been broken away from the constraint of ethernet line, provides conveniently network access mode to the terminal use; Therefore, wireless network has obtained increasing deployment, and for example, to wireless campus network, wireless network has all obtained using widely from the city focus to the wireless city net, from wireless enterprise network, and a large amount of AP equipment are mounted and use.
But for WLAN (wireless local area network), channel is very rare resource, each AP is merely able to be operated on the very limited non-overlapped channel, for example, regulation according to existing WLAN agreement, in the frequency range of 2.4GHZ, have only three channels that do not conflict to use for AP simultaneously, can be channel 1, channel 6 and channel 11; And the performance that each channel can carry is at most 20Mbps.In addition, in the wlan network of intensive access, need to install a large amount of AP equipment and could satisfy the network demand of numerous wireless terminals, in a channel, have a large amount of AP equipment thereby caused, and all AP equipment will be divided into the situation of the 20Mbps performance of respective channels.
Further, in wlan network, the performance that any wireless terminal all may a large amount of consume channel, for example, when demand such as BT download, sudden peal of thunder download was arranged when wireless terminal, this wireless terminal was with the performance of a large amount of consume channel.In order to solve the problem of a large amount of consume channel performances of above-mentioned wireless terminal, guarantee that whole wlan network can provide stable access service, need carry out Limit Rate to wireless terminal, promptly control the flow that each wireless terminal can not surpass appointment, thereby reduce the channel performance that wireless terminal consumed.For example, the maximum flow that wireless terminal is set is 2Mbps, makes the flow of wireless terminal can not surpass 2MBbps, if when surpassing, AP equipment can directly abandon the data that surpass.
Yet, in the wlan network of intensive access, when a plurality of wireless terminals carry out the flow download simultaneously, though Limit Rate can be controlled the maximum stream flow of each wireless terminal, but a plurality of wireless terminals still can take most channel, thereby have influence on other wireless terminal visited WLAN networks.In addition, may there be a large amount of interference source (for example, radar, microwave oven etc.) in the frequency range that wlan network is worked, and along with the increase of interference and wireless device can cause channel performance to descend; And existing Limit Rate all is based on the speed limit process of wireless terminal itself, can not adjust according to the performance of channel, makes existing Limit Rate can't guarantee the network stabilization operation.
Summary of the invention
The invention provides the method and apparatus of adjusting flow speed in a kind of WLAN (wireless local area network),, guarantee that wireless terminal all can be linked into wireless network normally with the flow speed of dynamic adjustment wireless terminal.
In order to achieve the above object, the present invention proposes the method for adjusting flow speed in a kind of WLAN (wireless local area network), be used at channel resource limited wireless local area network (LAN) the flow of wireless terminal being carried out speed limit, described channel resource is divided in advance and keeps channel resource and use channel resource; Described reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, and said method comprising the steps of:
Obtain channel seizure ratio;
Dynamically adjust the actual flow thresholding of described wireless terminal according to described channel seizure ratio;
Actual flow thresholding according to described wireless terminal carries out the speed limit processing to the flow speed of described wireless terminal.
The described channel seizure ratio that obtains specifically comprises:
The ratio of the maximum stream flow that existing flow and channel can carry in the calculating channel.
The actual flow thresholding of dynamically adjusting described wireless terminal according to described channel seizure ratio specifically comprises:
Judge that whether described channel seizure ratio is greater than the first default numerical value; If then reduce the actual flow thresholding of described wireless terminal; Wherein, described first numerical value ratio that is described use channel resource and described channel resource.
The actual flow thresholding of dynamically adjusting described wireless terminal according to described channel seizure ratio also comprises:
Judge that whether described channel seizure ratio is less than default second value; If then increase the actual flow thresholding of described wireless terminal; Wherein, the actual flow thresholding after the increase can not surpass the setting traffic threshold.
When described channel seizure ratio is between described default second value and the described first default numerical value,
The actual flow thresholding of dynamically adjusting described wireless terminal according to described channel seizure ratio also comprises:
Keep the actual flow thresholding of described wireless terminal not change.
According to the actual flow thresholding of described wireless terminal the flow speed of described wireless terminal being carried out speed limit handles and specifically comprises:
When described wireless terminal corresponding flow speed during, the flow speed of described wireless terminal is carried out speed limit greater than the actual flow thresholding of described wireless terminal;
When described wireless terminal corresponding flow speed is not more than the actual flow thresholding of described wireless terminal, the flow speed of described wireless terminal is not carried out speed limit.
Adjust the equipment of flow speed in a kind of WLAN (wireless local area network), be used at channel resource limited wireless local area network (LAN) the flow of wireless terminal being carried out speed limit, described channel resource is divided in advance and keeps channel resource and use channel resource; Described reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, and described equipment comprises:
Acquisition module is used to obtain channel seizure ratio;
Adjusting module is connected with described acquisition module, and the channel seizure ratio that is used for obtaining according to described acquisition module is dynamically adjusted the actual flow thresholding of described wireless terminal;
Processing module is connected with described adjusting module, is used for according to the actual flow thresholding of the adjusted wireless terminal of described adjusting module the flow speed of described wireless terminal being carried out the speed limit processing.
Described acquisition module specifically is used for:
The ratio of the maximum stream flow that existing flow and channel can carry in the calculating channel.
Described adjusting module also is used for:
Judge that whether described channel seizure ratio is greater than the first default numerical value; And in judged result when being, reduce the actual flow thresholding of described wireless terminal; Wherein, described first numerical value ratio that is described use channel resource and described channel resource.
Described adjusting module also is used for:
Judge that whether described channel seizure ratio is less than default second value; And in judged result when being, increase the actual flow thresholding of described wireless terminal; Wherein, the actual flow thresholding after the increase can not surpass the setting traffic threshold.
When described channel seizure ratio is between described default second value and the described first default numerical value,
Described adjusting module also is used for: keep the actual flow thresholding of described wireless terminal not change.
Described processing module specifically is used for:
When described wireless terminal corresponding flow speed during, the flow speed of described wireless terminal is carried out speed limit greater than the actual flow thresholding of described wireless terminal;
When described wireless terminal corresponding flow speed is not more than the actual flow thresholding of described wireless terminal, the flow speed of described wireless terminal is not carried out speed limit.
Compared with prior art, the present invention has the following advantages:
By analysis to channel occupancy situation factor, actual flow thresholding and channel occupancy situation are combined, adjust the actual flow threshold value, thereby realize dynamic Limit Rate, promptly dynamically adjust the maximum stream flow of wireless terminal, keep the wireless terminal that channel resource is given the low discharge wireless terminal and newly inserted by reserving, realized the stable operation of wireless network, make all wireless terminals can use wireless network normally.
Description of drawings
Fig. 1 is for adjusting the method flow diagram of flow speed in a kind of WLAN (wireless local area network) of the present invention's proposition;
Fig. 2 is for adjusting the method flow diagram of flow speed in the WLAN (wireless local area network) that proposes under a kind of concrete application scenarios of the present invention;
Fig. 3 is for adjusting the equipment structure chart of flow speed in a kind of WLAN (wireless local area network) of the present invention's proposition.
Embodiment
Core concept of the present invention is in channel resource limited wireless local area network (LAN), by actual flow thresholding and channel occupancy situation are combined, dynamically adjust the actual flow threshold value according to the channel occupancy situation, thereby dynamically adjust the maximum stream flow of wireless terminal, and according to the maximum stream flow of this wireless terminal the flow speed of described wireless terminal is carried out speed limit and handle.Among the present invention, keep the wireless terminal that channel resource is given the low discharge wireless terminal and newly inserted, realized the stable operation of wireless network, make all wireless terminals can use wireless network normally by reserving.
As shown in Figure 1, for adjusting the method for flow speed in a kind of WLAN (wireless local area network) of the present invention's proposition, be used at channel resource limited wireless local area network (LAN) the flow of wireless terminal being carried out speed limit, described channel resource is divided in advance and keeps channel resource and use channel resource; Described reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, and said method comprising the steps of:
As shown in Figure 2, for dynamically adjusting the method for flow speed in the WLAN (wireless local area network) that is proposed under a kind of concrete application scenarios of the present invention, may further comprise the steps:
Concrete, the mode of obtaining the channel occupancy situation includes but not limited to by using the tool software in the wlan network to obtain the channel occupancy situation.Wherein, in wlan network, have a variety of tool software all can obtain the channel occupancy situation, for example, existing Airmagnet software, Comm View for WiFi software etc. all can realize obtaining the operation of channel occupancy situation.In addition, can also directly obtain the channel occupancy situation from radio frequency chip (this radio frequency chip is used for realizing the reception and the transmission of wireless data); Perhaps, regularly obtain the channel occupancy situation by self-defining software; Need to prove that the channel occupancy situation of finally obtaining need show in the mode of channel seizure ratio (operating position of representing current channel with percentage).As seen, the mode of obtaining the channel occupancy situation has multiple, only is to use the result of this channel occupancy situation to handle accordingly among the present invention, and this obtains among process the present invention of channel occupancy situation and gives unnecessary details no longer in detail.
(1) sets traffic threshold, this setting traffic threshold is to be the set threshold value of wireless terminal in the process of initial configuration, in actual application, the actual flow thresholding of wireless terminal all can not be set traffic threshold greater than this, generally, can be set to 2Mbps by this setting traffic threshold.
(2) actual flow thresholding, this actual flow thresholding is in actual application, the flow of wireless terminal is carried out the threshold value of speed limit, when the flow speed of wireless terminal during greater than this actual flow threshold value, need carry out speed limit to the flow speed of wireless terminal, otherwise, do not need the flow speed of wireless terminal is carried out speed limit.Wherein, in the initial moment, this actual flow thresholding is above-mentioned setting traffic threshold.
(3) keep channel resource, this reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, wherein, in wlan network, there is wireless terminal a large amount of consume channel performances (promptly to take large volumes of channels, caused by demands such as BT download, sudden peal of thunder downloads) time, in order to guarantee that all wireless terminals all can be linked in the wireless network, need reserve a part of channel resource for low discharge wireless terminal and the new wireless terminal that inserts, promptly keep channel resource, this part terminal can use this reservation channel resource to be linked into wireless network.
(4) use channel resource, this use channel resource and to keep channel resource be corresponding, the two and be channel resource in the wlan network, by this use channel resource, in a large number the wireless terminal of consume channel performance can be linked into wireless network, and satisfy the needs of self.
Among the present invention, above-mentionedly dynamically adjust the actual flow thresholding according to this channel occupancy situation and specifically comprise:
(1) judges that whether the channel occupancy situation is greater than the first default numerical value (for example, this first default numerical value is set to 80%); If forward (2) to; Otherwise, forward (3) to.Wherein, first numerical value that should be default is for optional according to actual needs, among the present invention, access service is provided for low discharge wireless terminal and the new wireless terminal that inserts in order to guarantee enough reservation channel resources, make this first default numerical value, identical with the ratio of using channel resource and channel resource; When channel occupancy situation during greater than this first default numerical value, then reduce the actual flow thresholding of wireless terminal, promptly reduce the channel occupancy situation, thereby guarantee to have enough channel resources access service to be provided for low discharge wireless terminal and the new wireless terminal that inserts.Certainly, according to the actual needs, also can make this first default numerical value, the ratio less than using channel resource and channel resource repeats no more among the present invention.
(2) the actual flow thresholding of reduction wireless terminal.Wherein, in order more reasonably to control the actual flow thresholding, a flow can be set according to the actual needs (for example adjust coefficient, 10%), in this step, the actual flow thresholding that reduces wireless terminal can use formula: target actual flow thresholding=current actual flow thresholding * (1-adjusts coefficient) obtains.For example, the actual flow thresholding when initial is for setting traffic threshold (2Mbps), and when reducing the actual flow thresholding of wireless terminal for the first time, the actual flow thresholding is 1.8Mbps (2*0.9); The next cycle, the actual flow thresholding was 1.62Mbps (1.8*0.9) in the time of still will reducing the actual flow thresholding of wireless terminal.Certainly, according to the actual needs, flow also can be set adjust coefficient, only reduce default numerical value, for example, when needing to reduce the actual flow thresholding of wireless terminal, reduce 0.1Mbps at every turn, not repeat them here.
(3) judge that whether the situation that takies is less than default second value (for example, this default second value is set to 60%); If forward (4) to; Otherwise, forward (5) to.Wherein, this default second value is for optional according to actual needs, and the second value that should preset be less than the first default numerical value.
(4) the actual flow thresholding of increase wireless terminal, the actual flow thresholding after this increases can not surpass sets traffic threshold.Wherein, the actual flow thresholding that increases wireless terminal can use formula: target actual flow thresholding=current actual flow thresholding * (1+ adjusts coefficient) obtains.This adjusts coefficient can be identical with the adjustment coefficient in (2), also can be different, and be all example mutually with the two and describe.For example, current actual flow thresholding is 1.8Mbps, and when needs increased the actual flow thresholding of wireless terminal, the actual flow thresholding was 1.98Mbps (1.8*1.1); The next cycle, the actual flow thresholding was 2Mbps (because the result of 1.98*1.1 has exceeded the setting traffic threshold, then this actual flow threshold setting being the setting traffic threshold) in the time of still will increasing the actual flow thresholding of wireless terminal.Certainly, according to the actual needs, flow also can be set adjust coefficient, only increase default numerical value, for example, when needing to increase the actual flow thresholding of wireless terminal, increase 0.1Mbps at every turn, not repeat them here.
(5) the actual flow thresholding is not adjusted.In summary it can be seen that the prerequisite of carrying out this step is the channel occupancy situation greater than default second value and less than the first default numerical value, for example, the channel occupancy situation is between 60% to 80%.
Among the present invention, when the situation that takies when default second value is between the first default numerical value, show that the channel performance of network and user's use experience have reached a stable state, do not need the actual flow thresholding is adjusted; Promptly in WLAN (wireless local area network), there are enough channel resources to provide access service, and make existing high flow capacity wireless terminal have best experience this moment for low discharge wireless terminal and the new wireless terminal that inserts.
Need to prove that said process can also be adjusted execution sequence according to the actual needs, for example, carry out earlier the deterministic process in (3), carry out process in (1) for not the time, do not repeat them here when judged result.
In the present invention, be not limited to obtain the actual flow thresholding by the way, with good grounds channel occupancy situation is obtained the actual flow thresholding, thereby the mode that finally realizes Limit Rate does not repeat them here all within protection range of the present invention.
Step 203 is carried out speed limit according to adjusted actual flow thresholding to the flow of wireless terminal.Wherein, when getting access to the actual flow thresholding, can write down this actual flow thresholding, when the flow of wireless terminal surpassed this actual flow thresholding, the part that will exceed abandoned.
Concrete, when wireless terminal corresponding flow speed during, the flow speed of this wireless terminal is carried out speed limit greater than this actual flow thresholding; And when wireless terminal corresponding flow speed is not more than this actual flow thresholding, the flow speed of described wireless terminal is not carried out speed limit.Repeat no more among the present invention of this process.
Wherein, the inventive method can be adjusted each sequence of steps according to actual needs.
As shown in Figure 3, adjust the equipment of flow speed in a kind of WLAN (wireless local area network) that also proposes for the present invention, be used at channel resource limited wireless local area network (LAN) the flow of wireless terminal being carried out speed limit, described channel resource is divided in advance and keeps channel resource and use channel resource; Described reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, and described equipment comprises:
Adjusting module 32 is connected with described acquisition module 31, and the channel seizure ratio that is used for obtaining according to described acquisition module 31 is dynamically adjusted the actual flow thresholding of described wireless terminal; Further, described adjusting module 32 is used to also judge that whether described channel seizure ratio is greater than the first default numerical value; And in judged result when being, reduce the actual flow thresholding of described wireless terminal; Wherein, described first numerical value ratio that is described use channel resource and described channel resource.In addition, described adjusting module 32 is used to also judge that whether described channel seizure ratio is less than default second value; And in judged result when being, increase the actual flow thresholding of described wireless terminal; Wherein, the actual flow thresholding after the increase can not surpass the setting traffic threshold.When described channel seizure ratio was between described default second value and the described first default numerical value, described adjusting module 32 also was used to keep the actual flow thresholding of described wireless terminal not change.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise that some instructions are with so that a computer equipment (can be personal computer, server, perhaps network equipment etc.) is carried out method of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (12)
1, adjust the method for flow speed in a kind of WLAN (wireless local area network), it is characterized in that, be used at channel resource limited wireless local area network (LAN) the flow of wireless terminal being carried out speed limit, described channel resource is divided in advance and keeps channel resource and use channel resource; Described reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, and said method comprising the steps of:
Obtain channel seizure ratio;
Dynamically adjust the actual flow thresholding of described wireless terminal according to described channel seizure ratio;
Actual flow thresholding according to described wireless terminal carries out the speed limit processing to the flow speed of described wireless terminal.
2, the method for claim 1 is characterized in that, the described channel seizure ratio that obtains specifically comprises:
The ratio of the maximum stream flow that existing flow and channel can carry in the calculating channel.
3, method as claimed in claim 1 or 2 is characterized in that, the actual flow thresholding of dynamically adjusting described wireless terminal according to described channel seizure ratio specifically comprises:
Judge that whether described channel seizure ratio is greater than the first default numerical value; If then reduce the actual flow thresholding of described wireless terminal; Wherein, described first numerical value ratio that is described use channel resource and described channel resource.
4, method as claimed in claim 3 is characterized in that, the actual flow thresholding of dynamically adjusting described wireless terminal according to described channel seizure ratio also comprises:
Judge that whether described channel seizure ratio is less than default second value; If then increase the actual flow thresholding of described wireless terminal; Wherein, the actual flow thresholding after the increase can not surpass the setting traffic threshold.
5, method as claimed in claim 4 is characterized in that, when described channel seizure ratio is between described default second value and the described first default numerical value,
The actual flow thresholding of dynamically adjusting described wireless terminal according to described channel seizure ratio also comprises:
Keep the actual flow thresholding of described wireless terminal not change.
6, the method for claim 1 is characterized in that, according to the actual flow thresholding of described wireless terminal the flow speed of described wireless terminal is carried out speed limit and handles and specifically comprise:
When described wireless terminal corresponding flow speed during, the flow speed of described wireless terminal is carried out speed limit greater than the actual flow thresholding of described wireless terminal;
When described wireless terminal corresponding flow speed is not more than the actual flow thresholding of described wireless terminal, the flow speed of described wireless terminal is not carried out speed limit.
7, adjust the equipment of flow speed in a kind of WLAN (wireless local area network), it is characterized in that, be used at channel resource limited wireless local area network (LAN) the flow of wireless terminal being carried out speed limit, described channel resource is divided in advance and keeps channel resource and use channel resource; Described reservation channel resource is used to low discharge wireless terminal and the new wireless terminal that inserts that access service is provided, and described equipment comprises:
Acquisition module is used to obtain channel seizure ratio;
Adjusting module is connected with described acquisition module, and the channel seizure ratio that is used for obtaining according to described acquisition module is dynamically adjusted the actual flow thresholding of described wireless terminal;
Processing module is connected with described adjusting module, is used for according to the actual flow thresholding of the adjusted wireless terminal of described adjusting module the flow speed of described wireless terminal being carried out the speed limit processing.
8, equipment as claimed in claim 7 is characterized in that, described acquisition module specifically is used for:
The ratio of the maximum stream flow that existing flow and channel can carry in the calculating channel.
9, as claim 7 or 8 described equipment, it is characterized in that described adjusting module also is used for:
Judge that whether described channel seizure ratio is greater than the first default numerical value; And in judged result when being, reduce the actual flow thresholding of described wireless terminal; Wherein, described first numerical value ratio that is described use channel resource and described channel resource.
10, equipment as claimed in claim 9 is characterized in that, described adjusting module also is used for:
Judge that whether described channel seizure ratio is less than default second value; And in judged result when being, increase the actual flow thresholding of described wireless terminal; Wherein, the actual flow thresholding after the increase can not surpass the setting traffic threshold.
11, equipment as claimed in claim 10 is characterized in that, when described channel seizure ratio is between described default second value and the described first default numerical value,
Described adjusting module also is used for: keep the actual flow thresholding of described wireless terminal not change.
12, equipment as claimed in claim 7 is characterized in that, described processing module specifically is used for:
When described wireless terminal corresponding flow speed during, the flow speed of described wireless terminal is carried out speed limit greater than the actual flow thresholding of described wireless terminal;
When described wireless terminal corresponding flow speed is not more than the actual flow thresholding of described wireless terminal, the flow speed of described wireless terminal is not carried out speed limit.
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| CN200910176762A CN101651967A (en) | 2009-09-21 | 2009-09-21 | Method and equipment for adjusting flow speed in wireless local area network |
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| CN105407501A (en) * | 2015-10-23 | 2016-03-16 | 上海斐讯数据通信技术有限公司 | AP, AP speed-limit method and system |
| WO2018068516A1 (en) * | 2016-10-13 | 2018-04-19 | 上海斐讯数据通信技术有限公司 | Commercial wifi user dynamic bandwidth limiting method and system |
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