CN102378218A - Access point equipment of wireless local area network and channel selection method thereof - Google Patents
Access point equipment of wireless local area network and channel selection method thereof Download PDFInfo
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Abstract
The invention discloses an access point equipment of a wireless local area network and a channel selection method thereof. The access point equipment comprises a first radio frequency unit, a communication module, a second radio frequency unit, a channel detection module and a wireless management module, wherein the communication module is connected with the first radio frequency unit; the second radio frequency unit is used for scanning channel information of each channel in the area of the access point equipment; the channel detection module is connected with the second radio frequency unit; and the wireless management module is respectively connected with the communication module and the channel detection module; and the wireless management module is used for selecting a channel according with communication conditions to transmit data according to detection information and pre-set rules. According to the access point equipment of the wireless local area network, by scanning and detecting each channel in the area of the access point equipment and selecting the channel according with the communication conditions to transmit the data according to the pre-set rules, the defect of transmission packet loss which is caused by competition/conflict of the channel is effectively avoided when the two sets of the access equipment which work on the same channel or the adjacent channels transmit the data, so that the performance of the wireless network is improved.
Description
Technical field
The present invention relates to wireless local area network technology, relate in particular to a kind of device of wireless local area network access point and channel selecting method thereof.
Background technology
At present; Terminal in the WLAN (portable terminal or computer) is through access point (AP) equipment access network, and the wireless local area network technology that is the basis with IEEE 802.11 series of canonical is important and a kind of technology of being used widely in the interconnection technique of hot spot region.
Because IEEE 802.11 is operated in undelegated open network frequency range; It is various that WLAN is disposed user type, operator, enterprise, individually can dispose per capita, and a plurality of access point is when disposing; Can not hold consultation to each other and optimization deployment jointly; Therefore have the situation of having disposed a plurality of access points in the same overlay area simultaneously, receive the interference from these other equipment of frequency range, the interference between mutually can cause very big influence to network performance.
In order to reduce or to avoid interference, when single lan is disposed, adopt the method for engineering optimization in the same area, to adopt a kind of channel usually as far as possible, adopt non-interfering orthogonal channel (like 1 on the 2.4GHz, 6,11 channels) between adjacent area.Existing AP channel self-adjusting scheme is mainly chosen clean channel through scanning, and the working channel of AP is set, and avoids the interference between AP, guarantees lan capacity.The precondition of implementing this method is in same zone, can not have above the AP more than the orthogonal channel number to cover.For example, if be operated under the 2.4GHz condition, if the AP quantity of current position surpasses 3, in any case be provided with so, AP all scans the clean channel less than other.
Deployment along with a large amount of hot spot regions of operator; A large amount of uses of individual's home network wireless aps and enterprise wireless covering etc.; The situation that 3 AP cover in same zone, often occurs surpassing, be difficult to find again clean channel, therefore dispose the user and lack under the situation of negotiation in many families; Even adopt the method for engineering optimization to optimize the deployment of self network, still can't avoid the interference problem between a plurality of local area network (LAN)s.And the influence that air interference causes network mainly is the transmission of data; When two AP are operated in identical/adjacent channel, and when all transfer of data being arranged on two AP, because the competition/conflict of channel; Will cause these two AP that the transmission packet loss takes place, thereby influence wireless network performance.
Summary of the invention
In order to overcome defective of the prior art, the invention provides a kind of device of wireless local area network access point and channel selecting method thereof, to realize strengthening effectively safety of data transmission and reliability, improve wireless network performance.
For realizing above-mentioned purpose; The invention provides a kind of access point apparatus; Comprise: first radio frequency unit and the communication module that is connected with said first radio frequency unit also comprise: second radio frequency unit is used to scan the channel information of each channel of said access point apparatus region; The Channel Detection module is connected with said second radio frequency unit, is used for the channel information of said second radio frequency unit scanning is detected, and obtains detection information; Said detection information comprises pairing channel number of channel to be detected and website quantity; The radio management module is connected with said Channel Detection module with said communication module respectively, is used for according to said detection information and pre-defined rule, and the channel of selector hop communication condition carries out transfer of data.
Be to realize above-mentioned purpose, the present invention also provides a kind of channel selecting method of access point apparatus, comprising: the channel information to each channel of said access point apparatus region scans; Channel information to scanning detects, and obtains detection information; Said detection information comprises pairing channel number of channel to be detected and website quantity; According to said detection information and pre-defined rule, the channel of selector hop communication condition carries out transfer of data.
Can know by above technical scheme; The present invention is through having increased by second radio frequency unit, detection module and radio management module in access point apparatus; The access point apparatus region being carried out the scanning detection and the channel of wireless transmission environment selects to judge; In the time of can avoiding effectively all transfer of data being arranged on two access point apparatus that are operated on identical or the adjacent channel, because the competition/conflict of channel, and the defective of the transmission packet loss that causes; Can strengthen safety of data transmission and reliability, thereby improve the performance of wireless network.
Pass through specific embodiment below, and combine accompanying drawing that the present invention is done further detailed description.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment of the invention access point apparatus;
Fig. 2 is the flow chart of embodiment of the invention access point apparatus channel selecting method.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Fig. 1 is the structural representation of embodiment of the invention access point apparatus; As shown in Figure 1; The access point apparatus that the embodiment of the invention provides comprises first radio frequency unit 11 and communication module 12; Wherein, first radio frequency unit 11 carries out the used work radio frequency of transfer of data as this access point apparatus, acts on the normal transceiver of realizing the communication employing.Communication module 12 is connected with first radio frequency unit 11, and the work radio frequency that is used for providing based on first radio frequency unit 11 is accomplished transfer of data.Interference-free in the access point apparatus that the embodiment of the invention provides in order to guarantee self to be operated in one; Perhaps work on the less data transmission channel of interference ratio; In access point apparatus, increased by second radio frequency unit 13 of the channel information of each channel that is used to scan the access point apparatus region; The Channel Detection module 14 that is connected with second radio frequency unit 13, and the radio management module 15 that is connected with Channel Detection module 14 with communication module 12 respectively.Wherein, second radio frequency unit 13 acts on the scanning channel detection of information transceiver; Channel Detection module 14 will detect transceiver and be arranged at listening state; Make it monitor the data transmit-receive situation of each channel; Channel Detection module 14 is used for the channel information of second radio frequency unit, 13 scannings is detected and obtains the detection information of channel to be detected simultaneously, and this detection information comprises information such as pairing channel number of channel to be detected and website quantity at least; 15 pairs of communication modules of radio management module 12 are managed with Channel Detection module 14; According to above-mentioned detection information and pre-defined rule; The channel of selector hop communication condition carries out transfer of data, and wherein radio management module 15 is provided with through the working channel of 12 pairs first radio frequency units 11 of communication module.
Concrete; Access point apparatus is deployed in a new zone and need selects working channel perhaps in original working region, to carry out under the situation of working channel switching; Second radio frequency unit 13 of access point apparatus through wherein carries out the scanning of channel information to each channel in the zone at its place; The scanning information and the information of carrying out that Channel Detection module 14 receives second radio frequency unit 13 detect the needed information of acquisition selective channel, for example comprise pairing separately channel number of channel to be detected and website quantity etc. at least.Described channel number can be the channel logo information of this channel to be detected, and what websites described website quantitaes has used this channel to be detected as working channel.After Channel Detection module 14 obtains detection information, carry out channel through radio management module 15 and select.Particularly; Monitoring information and pre-defined rule that radio management module 15 is obtained according to Channel Detection module 14; From a plurality of channels to be detected, select a working channel that meets the channel of communication condition as access point apparatus, and carry out transfer of data through this channel.
Pre-defined rule described in the present embodiment can be to dispose before this access point apparatus or in the course of work; In equipment, set, do not receive external interference in order to select one; Perhaps receive a minimum channel of external interference to carry out the channel selective rule of transfer of data, it can adopt modes such as software program or database to be stored in the radio management module.
Access point apparatus provided by the present invention passes through the scanning to the channel information of its each channel of region; Obtain detection information; And carry out channel according to said detection information and pre-defined rule and select, select the channel that meets communication condition and carry out transfer of data, when having avoided effectively all transfer of data being arranged on two access point apparatus that are operated on identical or the adjacent channel; Because the competition/conflict of channel; And the defective of the transmission packet loss that causes has strengthened safety of data transmission and reliability, thereby improves the performance of wireless network.
How be example to accomplish channel to pre-defined rule and access point apparatus is selected to be described in detail the embodiment of the invention to be operated under the 2.4GHz condition.
Under the 2.4GHz frequency condition; Channel isolation is more than or equal to the interchannel of predetermined threshold 5 orthogonal channel each other; Can not cause interference each other; For example channel number is 1,6,11 an interchannel orthogonal channel each other, and wherein channel isolation is the absolute difference of the channel number of two channels, otherwise channel isolation is less than the interchannel of predetermined threshold 5 adjacent channel each other.When if the access point apparatus quantity of the same area deployed is counted less than orthogonal channel, then exist the channel that is not disturbed to supply initiate access point apparatus to select; When if the access point apparatus quantity of the same area deployed is counted more than or equal to orthogonal channel; Then there is not the channel that is not disturbed; Initiate access point apparatus can only be selected a channel access network from all the other channels; In this case, can utilize corresponding informance in the said detection information, from adjacent channel, select the less channel of suffered interference to carry out transfer of data as Rule of judgment.
Wherein, can also comprise in the said detection information: reception signal strength signal intensity RSS (Received Signal Strength) and/or the signal and the interference-to-noise ratio SINR (Signal to Interference plus Noise Ratio) of the quantity of channel to be detected institute's data packets for transmission in nearest transmission cycle, the size of packet, the message transmission rate that channel to be detected is corresponding, channel to be detected correspondence.Wherein, The quantity of said channel to be detected institute's data packets for transmission in nearest transmission cycle; Whether represent what of this channel transmission data bag to be detected in the current last cycle of scanning the place transmission cycle, being used for this channel to be detected of judgement has transfer of data; The size of said channel to be detected institute's data packets for transmission in nearest transmission cycle; Represent the current size that scans this channel actual transmissions data amount to be detected in the last week that belongs to transmission cycle, the transmission rate corresponding with channel to be detected is used for judging the occupied busy not busy situation of this channel to be detected jointly; Reception signal strength signal intensity RSS and/or signal and interference-to-noise ratio SINR that said channel to be detected is corresponding, the measurement index for to the signal strength signal intensity and the interference noise intensity of this channel to be detected is used for the annoyance level between the quantitative assessment adjacent channel.
Further, said pre-defined rule comprises that the corresponding website quantity of preferential selection is that website quantity zero and that its adjacent channel is corresponding also is zero channel to be detected, promptly clean channel.Wherein said adjacent channel is that the absolute value of difference of channel number of channel number and said channel to be detected is less than the channel to be detected of a predetermined threshold; The absolute value of this difference is isolation, and said predetermined threshold is to be preset in the isolation value that assurance two interchannels in the system do not cause interference mutually.For example under the 2.4GHz condition, channel isolation is less than 5 interchannel adjacent channel each other, and promptly channel 1 is an adjacent channel with channel 4, and its isolation is 3; Channel 1 is non-adjacent channel with channel 6, and promptly said orthogonal channel, its isolation are 5.Said clean channel self is not shared by other working terminals; And itself and the current shared interchannel of other working terminals that scans be adjacent channel each other not; Said clean channel does not receive external interference; More excellent channel as access point apparatus is selected, if having clean channel in the access point apparatus region, then by radio management module 15 working channel is switched to this clean channel.
Concrete; For example access point apparatus is deployed in a new zone and need selects under the situation of working channel; Pre-defined rule according to access point apparatus; At first judge whether to exist in should the zone not taken and interference-free clean channel by other websites, if exist, then preferential this clean channel of selecting.
Access point apparatus provided by the present invention is judged through the scanning result to the channel information of its each channel of region; Under the situation that has clean channel to exist; Preferentially working channel is switched to this clean channel; Avoid unnecessary interference effectively, guaranteed the data transmission quality of wireless network.
Further, said pre-defined rule also is included under the situation that can't detect clean channel, though the preferential non-vanishing free of data transmission of corresponding website quantity and its adjacent channel also channel to be detected of free of data transmission, the i.e. idle channel selected.Wherein, through the channel to be detected institute's data packets for transmission quantity in nearest transmission cycle that comprises in the said detection information, judge whether said channel to be detected and adjacent channel thereof exist transfer of data.Said idle channel self is shared by other working terminals, but does not carry out transfer of data; Its adjacent channel possibly be in by the shared or unappropriated situation of other working terminals, but does not carry out transfer of data.Said idle channel is that the more excellent channel when not having clean channel in the access point apparatus region is selected, if having idle channel in the access point apparatus region, then by radio management module 15 working channel is switched to this idle channel.
Concrete; Access point apparatus is deployed in a new zone and need selects working channel perhaps in original working region, to carry out under the situation of working channel switching; According to the pre-defined rule of access point apparatus,, then judge the idle channel that whether exists self and the equal free of data of adjacent channel to transmit in this zone if judge and not have clean channel in the zone; If exist, then preferentially select this idle channel.
Access point apparatus provided by the present invention is judged through the scanning result to the channel information of its each channel of region; Under the situation that does not have clean channel; Preferentially working channel is switched to idle channel; In possibly having the wireless transmission environment of interference, transmit through selecting the suffered channel of minimum that disturbs, keep data transmission quality preferably as much as possible.
Further; Said pre-defined rule also is included under the situation that can't detect idle channel; The preferential busy channel of selecting, the said busy channel described in the present embodiment can comprise self busy channel, the busy channel of neighbours and complete busy channel.Wherein said self busy channel is non-vanishing and transfer of data arranged for corresponding website quantity; But the channel to be detected of its adjacent channel free of data transmission; Be that said channel to be detected is shared and have a transfer of data by other working terminals; Its adjacent channel possibly be in by the shared or unappropriated situation of other working terminals, but does not carry out transfer of data; The busy channel of said neighbours is the free of data transmission; But the corresponding website quantity of its adjacent channel is non-vanishing and the channel to be detected of transfer of data arranged; Be that said channel to be detected self possibly be in by the shared or unappropriated situation of other working terminals; But do not carry out transfer of data, its adjacent channel is shared and have a transfer of data by other working terminals; Said complete busy channel is for there being transfer of data, and its adjacent channel also has the channel to be detected of transfer of data, and promptly said channel to be detected self and adjacent channel thereof are all shared and have a transfer of data by other working terminals.Said busy channel is that the channel when not having idle channel in the access point apparatus region is selected type, if do not have idle channel in the access point apparatus region, then by radio management module 15 working channel is switched to a busy channel.
Concrete; Access point apparatus is deployed in a new zone and need selects working channel perhaps in original working region, to carry out under the situation of working channel switching; Pre-defined rule according to access point apparatus; If judge and not have idle channel in the zone, then select a busy channel to carry out transfer of data.
Access point apparatus provided by the invention is judged through the scanning result to the channel information of its each channel of region; Under the situation that does not have idle channel; Working channel is switched to a busy channel; In having the wireless transmission environment that disturbs, transmit through selecting the less channel of suffered interference, keep data transmission quality preferably as much as possible.
Further; When having only busy channel to exist in the said access point apparatus region; In order to select a busy channel to carry out transfer of data according to qualifications; The embodiment of the invention provides the rule of a more excellent channel of choose reasonable from detected busy channel, in the process that said busy channel is selected, need not judge said busy channel type.Said pre-defined rule also comprises the selective rule of busy channel, selects the minimum busy channel of data transmission period duty ratio T to carry out transfer of data, wherein
Also comprise said channel to be detected institute's data packets for transmission size and transmission rate in nearest transmission cycle in the said detection information, be used to calculate the pairing data transmission period duty ratio of current channel T
iAnd the pairing data transmission period duty ratio of each adjacent channel T of said current channel
j, T
iAnd T
jComputational methods be institute's data packets for transmission size/(transmission rate * transmission cycle) in the nearest transmission cycle.Wherein, the data transmission period duty ratio of said current channel and each adjacent channel thereof, for this current channel and each adjacent channel thereof respectively in transmission cycle the data transmitting time to the occupation proportion of this transmission cycle.For example with busy channel number be 6 channel transmit and transmission cycle be 20 seconds be that example describes; If this channel is in the busy state of neighbours, promptly there is transfer of data on the adjacent channel of this channel, if the transmission rate of this adjacent channel is 1Mbps; Then can transmit the data volume of 20Mb in the transmission cycle of itself and 20 seconds at most; If in a transmission cycle, the data volume of the actual transmission of this channel is 10Mb, and then the data transmission period duty ratio of this adjacent channel is 1/2.m
IjFor each adjacent channel of said current channel interference weight to said current channel, be the important computations foundation of data transmission period duty ratio T, m
Ij=channel isolation factor of influence A
Ij* channel disturbance intensity effect factor B
Ij, wherein,
0＜B
Ij≤1.Said detection information also comprises reception signal strength signal intensity RSS and/or signal and the interference-to-noise ratio SINR that channel to be detected is corresponding, is used to calculate said channel disturbance intensity effect factor B
IjSaid data transmission period duty ratio T is the weighted sum of current channel and adjacent channel data transmission period duty ratio thereof.If have the qualified busy channel of data transmission period duty ratio in the access point apparatus region, then working channel switched to this busy channel by radio management module 15.
Concrete; Access point apparatus is deployed in a new zone and need selects working channel perhaps in original working region, to carry out under the situation of working channel switching; Pre-defined rule according to access point apparatus; If should only have busy channel in the zone, then need be according to the data transmission period duty ratio of current channel and adjacent channel thereof, in conjunction with channel isolation factor of influence A
IjWith channel disturbance intensity effect factor B
Ij, select a busy channel to transmit according to qualifications.
Access point apparatus provided by the invention is judged through the scanning result to the channel information of its each channel of region; Under the situation that only has busy channel; Through working channel being switched to a busy channel of minimum interference; Make under inevitable situation about disturbing, guarantee data transmission quality preferably as far as possible.
Further; Because switching, channel must bring certain expense; Therefore after said access point apparatus detects the channel to be detected that meets said pre-defined rule according to the method that above-mentioned each embodiment provided, also need carry out carrying out the switching threshold judgement before channel switches.Said pre-defined rule also comprises transmission delay and the transmission delay of current channel after obtaining channel and switch according to said detection information; If the difference of judging transmission delay and the transmission delay of said current channel after said channel switches and channel switching delay sum less than the switching threshold of being scheduled to, are then carried out the channel switching; If be not less than, then do not carry out channel and switch.The maximum that wherein said switching threshold postponed for the fixing switching time that is arranged in advance according to system requirements in the access point apparatus; Have only when channel switches used time delay and is less than this switching threshold; Explain that just the channel switching can bring certain gain, switching through channel can be with the more excellent channel of wireless-transmission network guiding.
Concrete; For example access point apparatus carries out in original working region under the situation of working channel switching, after said access point apparatus retrieves qualified channel to be detected, before carrying out the channel switching; Need carry out switching threshold earlier judges; Can work as channel when switching used time delay, carry out channel and switch, not switch otherwise can hold over the work at present channel less than switching threshold.
Access point apparatus provided by the invention is through at first judging the channel switching threshold before channel switches; Guaranteed that the generation that channel switches can be with the more excellent channel of transfer of data guiding; Avoid unnecessary switching, saved system resource, guaranteed data transmission quality preferably as far as possible.
In technique scheme, when detected clean channel or idle channel during more than one, said pre-defined rule also comprises, if there are a plurality of said clean channels, then selects one of them at random; If there are a plurality of said idle channels, then select one of them at random.
Concrete; Access point apparatus is deployed in a new zone and need selects working channel perhaps in original working region, to carry out under the situation of working channel switching; Pre-defined rule according to access point apparatus; If this region memory is more than one clean channel or idle channel the time, access point apparatus can select a qualified channel to insert at random.
Access point apparatus provided by the invention is judged through the scanning result to the channel information of its each channel of region; When not only a channel belongs to clean channel or idle channel; Through selecting wherein channel at random, can guarantee the quality of data transmission channel and the efficient that channel is selected.
Fig. 2 is the flow chart of embodiment of the invention access point apparatus channel selecting method, and is as shown in Figure 2, and the channel selecting method of the access point apparatus that the embodiment of the invention provides comprises:
Step 101, the channel information of each channel of said access point apparatus region is scanned;
Step 102, the channel information of scanning is detected, obtain detection information;
Step 103, according to said detection information and pre-defined rule, the channel of selector hop communication condition carries out transfer of data.
Concrete, the channel selecting method of the access point apparatus that the embodiment of the invention provides can repeat no more referring to the treatment step of describing among the said apparatus embodiment here.
Access point apparatus channel selecting method provided by the invention detects and condition judgment through the wireless transmission environment in the access point apparatus region is scanned; Select good channel according to qualifications and carry out transfer of data; Can guarantee safety of data transmission and reliability, thereby effectively improve the performance of wireless network.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (16)
1. an access point apparatus comprises first radio frequency unit and the communication module that is connected with said first radio frequency unit, it is characterized in that, also comprises:
Second radio frequency unit is used to scan the channel information of each channel of said access point apparatus region;
The Channel Detection module is connected with said second radio frequency unit, is used for the channel information of said second radio frequency unit scanning is detected, and obtains detection information; Said detection information comprises pairing channel number of channel to be detected and website quantity;
The radio management module is connected with said Channel Detection module with said communication module respectively, is used for according to said detection information and pre-defined rule, and the channel of selector hop communication condition carries out transfer of data.
2. access point apparatus according to claim 1 is characterized in that, said pre-defined rule comprises: preferentially select the clean channel in the said channel to be detected to carry out transfer of data; Said clean channel is meant that corresponding website quantity is that website quantity zero and that its adjacent channel is corresponding also is zero channel to be detected; Wherein, the isolation of said adjacent channel and said channel to be detected is less than a predetermined threshold, and said isolation is the absolute difference of the corresponding channel number of the said adjacent channel channel number corresponding with said channel to be detected.
3. access point apparatus according to claim 2 is characterized in that, said detection information also comprises said channel to be detected institute's data packets for transmission quantity in nearest transmission cycle;
Accordingly, said pre-defined rule also comprises: if there is not said clean channel, then select idle channel to carry out transfer of data; Though said idle channel is meant the also channel to be detected of free of data transmission of corresponding website quantity non-vanishing but free of data transmission and its adjacent channel; Wherein, judge whether to exist transfer of data through said channel to be detected institute's data packets for transmission quantity in nearest transmission cycle.
4. access point apparatus according to claim 3 is characterized in that, said pre-defined rule also comprises: if there is not said idle channel, then select a busy channel to carry out transfer of data; Said busy channel comprises: self busy channel, the busy channel of neighbours and complete busy channel, wherein:
Said self busy channel is meant that corresponding website quantity is non-vanishing and transfer of data is arranged, but the channel to be detected of its adjacent channel free of data transmission;
The busy channel of said neighbours is meant free of data transmission, but the corresponding website quantity of its adjacent channel is non-vanishing and the channel to be detected of transfer of data arranged;
Complete busy channel has been meant transfer of data, and its adjacent channel also has the channel to be detected of transfer of data.
5. access point apparatus according to claim 4 is characterized in that, said detection information also comprises said channel to be detected institute's data packets for transmission size and transmission rate in nearest transmission cycle;
Accordingly, selecting a busy channel to carry out transfer of data comprises: select the minimum busy channel of data transmission period duty ratio T to carry out transfer of data; Wherein,
T
iBe the pairing data transmission period duty ratio of current channel, T
jBe the pairing data transmission period duty ratio of each adjacent channel of said current channel, m
IjBe each adjacent channel of said current channel interference weight to said current channel; T
iAnd T
jComputational methods all are institute's data packets for transmission size/(transmission rate * transmission cycles) in the nearest transmission cycle; m
Ij=channel isolation factor of influence A
Ij* channel disturbance intensity effect factor B
Ij, wherein,
6. access point apparatus according to claim 5 is characterized in that, said detection information also comprises corresponding reception signal strength signal intensity RSS and/or signal and the interference-to-noise ratio SINR of said channel to be detected, for obtaining corresponding B according to said RSS and/or SINR
Ij
7. according to claim 5 or 6 described access point apparatus; It is characterized in that; Pre-defined rule also comprises: the transmission delay after obtaining channel and switch according to said detection information and the transmission delay of current channel; If the difference of judging transmission delay and the transmission delay of said current channel after said channel switches and channel switching delay sum less than the switching threshold of being scheduled to, are then carried out the channel switching; If be not less than, then do not carry out channel and switch.
8. access point apparatus according to claim 3 is characterized in that, said pre-defined rule also comprises: if there are a plurality of said clean channels, then select one of them at random; If there are a plurality of said idle channels, then select one of them at random.
9. the channel selecting method of an access point apparatus is characterized in that, comprising:
Channel information to each channel of said access point apparatus region scans;
Channel information to scanning detects, and obtains detection information; Said detection information comprises pairing channel number of channel to be detected and website quantity;
According to said detection information and pre-defined rule, the channel of selector hop communication condition carries out transfer of data.
10. according to the channel selecting method of the said access point apparatus of claim 9, it is characterized in that said pre-defined rule comprises: preferentially select the clean channel in the said channel to be detected to carry out transfer of data; Said clean channel is meant that corresponding website quantity is that website quantity zero and that its adjacent channel is corresponding also is zero channel to be detected; Wherein, the isolation of said adjacent channel and said channel to be detected is less than a predetermined threshold, and said isolation is the absolute difference of the corresponding channel number of the said adjacent channel channel number corresponding with said channel to be detected.
11. the channel selecting method of access point apparatus according to claim 10 is characterized in that, said detection information also comprises said channel to be detected institute's data packets for transmission quantity in nearest transmission cycle;
Accordingly, said pre-defined rule also comprises: if there is not said clean channel, then select idle channel to carry out transfer of data; Though said idle channel is meant the also channel to be detected of free of data transmission of corresponding website quantity non-vanishing but free of data transmission and its adjacent channel; Wherein, judge whether to exist transfer of data through said channel to be detected institute's data packets for transmission quantity in nearest transmission cycle.
12. the channel selecting method of access point apparatus according to claim 11 is characterized in that, said pre-defined rule also comprises: if there is not said idle channel, then select a busy channel to carry out transfer of data; Said busy channel comprises: self busy channel, the busy channel of neighbours and complete busy channel, wherein:
Said self busy channel is meant that corresponding website quantity is non-vanishing and transfer of data is arranged, but the channel to be detected of its adjacent channel free of data transmission;
The busy channel of said neighbours is meant free of data transmission, but the corresponding website quantity of its adjacent channel is non-vanishing and the channel to be detected of transfer of data arranged;
Complete busy channel has been meant transfer of data, and its adjacent channel also has the channel to be detected of transfer of data.
13. the channel selecting method of access point apparatus according to claim 12 is characterized in that, said detection information also comprises said channel to be detected institute's data packets for transmission size and transmission rate in nearest transmission cycle;
Accordingly, selecting a busy channel to carry out transfer of data comprises: select the minimum busy channel of data transmission period duty ratio T to carry out transfer of data; Wherein,
T
iBe the pairing data transmission period duty ratio of current channel, T
jBe the pairing data transmission period duty ratio of each adjacent channel of said current channel, m
IjBe each adjacent channel of said current channel interference weight to said current channel; T
iAnd T
jComputational methods all are institute's data packets for transmission size/(transmission rate * transmission cycles) in the nearest transmission cycle; m
Ij=channel isolation factor of influence A
Ij* channel disturbance intensity effect factor B
Ij, wherein,
14. the channel selecting method of access point apparatus according to claim 13 is characterized in that, said detection information also comprises corresponding RSS and/or the SINR of said channel to be detected, for obtaining corresponding B according to said RSS and/or SINR
Ij
15. channel selecting method according to claim 13 or 14 described access point apparatus; It is characterized in that; Pre-defined rule also comprises: the transmission delay after obtaining channel and switch according to said detection information and the transmission delay of current channel; If the difference of judging transmission delay and the transmission delay of said current channel after said channel switches and channel switching delay sum less than the switching threshold of being scheduled to, are then carried out the channel switching; If be not less than, then do not carry out channel and switch.
16. the channel selecting method of access point apparatus according to claim 11 is characterized in that, said pre-defined rule also comprises: if there are a plurality of said clean channels, then select one of them at random; If there are a plurality of said idle channels, then select one of them at random.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1679351A (en) * | 2002-08-29 | 2005-10-05 | 汤姆森许可贸易公司 | Automatic channel selection in a radio access network |
| CN1778124A (en) * | 2003-02-24 | 2006-05-24 | 奥托塞尔实验室公司 | System and method for power adjustment in a wireless network. |
| CN1905731A (en) * | 2005-07-27 | 2007-01-31 | 鸿富锦精密工业（深圳）有限公司 | Access point and wireless channel selecting method thereof |
-
2011
- 2011-11-04 CN CN201110346115.2A patent/CN102378218B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1679351A (en) * | 2002-08-29 | 2005-10-05 | 汤姆森许可贸易公司 | Automatic channel selection in a radio access network |
| CN1778124A (en) * | 2003-02-24 | 2006-05-24 | 奥托塞尔实验室公司 | System and method for power adjustment in a wireless network. |
| CN1905731A (en) * | 2005-07-27 | 2007-01-31 | 鸿富锦精密工业（深圳）有限公司 | Access point and wireless channel selecting method thereof |
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