CN103167536B - A kind of wireless network architecture appraisal procedure, Apparatus and system - Google Patents
A kind of wireless network architecture appraisal procedure, Apparatus and system Download PDFInfo
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Abstract
The invention discloses a kind of wireless network architecture appraisal procedure, Apparatus and system.Wherein the method comprises: the coverage estimating each community according to cell information; According to the coverage of described community be core cell choose comprise multiple community bunch; According to the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community of place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree, and cross cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.Wireless network architecture appraisal procedure of the present invention, Apparatus and system, by to choose outdoor station core cell bunch, that distinguishes the channeling Du Hecuwai community of community in compute cluster crosses cover index, the reason of accurate positioned radio web results complexity, be convenient to reduce wireless network architecture complexity, reduce interference in band, promote quality of wireless network and user awareness.
Description
Technical field
The present invention relates to a kind of wireless technical field, particularly relate to a kind of wireless network architecture appraisal procedure, Apparatus and system.
Background technology
For meeting the quick growth of telephone traffic, the input of operator to wireless network continues to increase, and wireless network complexity is also more and more higher.When original frequency resource is constant, wireless network architecture complexity causes interference in more and more serious band, and cannot be solved by frequency optimization.Reduce wireless network architecture complexity, reduce interference in band, become operator and promoted quality of wireless network, ensured user awareness, kept the vital task of industrial competition.
In prior art, by different index definitions, the quantitative complexity analyzing wireless network architecture.Due to the restriction of method itself, None-identified or assessment cause baroque reason, be due to single station configuration excessive (in region, frequency is not enough), or cover (should not cover MPS process here) and cause due to crossing of some communities.Such as carry out evaluation structure complexity, following formula by wireless network architecture index (calculating the carrier frequency number in covering region):
Carrier frequency is more, and structure is more complicated.But differentiation of having no idea causes these carrier frequency baroque, which should not cover here, needs to carry out Coverage Control; Which should cover here, but belongs to the too much problem of single station carrier frequency number; Which is normal covering and carrier frequency number is also rational.
The actual problem causing wireless network architecture complexity to have following two aspects:
1, cross covering: the carrier frequency number of each community is few, but owing to effectively not controlling to cover, the carrier frequency number causing subregion to cover is too much; This situation, even if frequency optimization is to ultimate attainment, also cannot avoids being with interior interference, must carry out coverage optimization.
2, high configuration: Coverage Control is good, does not have too much overlapping covered, but due to the configuration of some cell carrier frequencies too high, cause complex structure.For limited frequency, these field frequency resources are nervous, are difficult to avoid same adjacent frequency to disturb.This situation, need by subtract appearance or cell splitting reduce carrier configuration.
Actual conditions were together with covering interts with high allocation problem, existing wireless network architecture appraisal procedure, cause complex structure these two aspects problem because cannot effectively distinguish, also cannot specify in optimization this subtract configuration still control cover, can only grope to attempt to adjust.
How clear and definite wireless network architecture complexity is navigated to " cross and cover ", " high configuration " two aspects, be the bottleneck that industry urgently breaks through.
Summary of the invention
The object of the invention is to, there is provided a kind of wireless network architecture appraisal procedure, Apparatus and system, the reason of accurate positioned radio web results complexity, the personnel of maintaining easily reduce wireless network architecture complexity, reduce interference in band, promote quality of wireless network and user awareness.
For achieving the above object, according to an aspect of the present invention, a kind of wireless network architecture appraisal procedure is provided, comprises:
The coverage of each community is estimated according to cell information;
According to the coverage of each community be core cell choose comprise multiple community bunch;
According to the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community of place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree, and cross cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.
Wherein, the described coverage estimating each community according to cell information comprises: according to longitude and latitude and the antenna azimuth of the antenna of described community, utilize Thiessen polygon principle, estimate the coverage of each community.
Described Cu Nei community comprises: described core cell, with described core cell with stand other arrange to community, the ground floor community adjacent with described core cell, when the antenna of described core cell is directional antenna, in positive and negative 60 ° of described core cell antenna azimuth and and between described core cell the second layer community of a community, interval, antenna when core cell is omnidirectional antenna, and all second layer communities of a community, interval between core cell; Cu Wai community comprises: other communities be disturbed outside cell set Nei Chucunei community of described core cell.
In addition, be that core cell is chosen and comprised bunch comprising of multiple community according to the coverage of described community: generate interference matrix according to mobile phone measurement report; According to described interference matrix select co-channel interference coefficient between described core cell be not 0 community be disturbed cell set as described core cell; Select other communities be disturbed outside cell set Nei Chucunei community as Cu Wai community.
Calculate described core cell corresponding bunch in channeling degree comprise: the average T CH carrier frequency number calculating Cu Nei community corresponding to described core cell; In compute cluster, channeling degree is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range.
The average T CH carrier frequency number calculating Cu Nei community corresponding to described core cell comprises: the condition according to presetting chooses cover layer community from the Cu Nei community comprising different frequency range, and the community choosing one of them frequency range is cover layer community; When the community of not this frequency range, choose the community of another frequency range as cover layer community; When there being two or more with this frequency range community covered, choose one of them as cover layer community; Calculating average T CH carrier frequency number is: in bunch with described core cell with the community of frequency range total TCH carrier frequency number divided by bunch in cover layer community number.
Calculate described core cell bunch between cross cover index be:
wherein, A community is core cell, and B community is the community that bunch external enwergy receives A area interference, Co
atoBrepresent that A community is to the co-channel interference coefficient of B community; TRX
arepresent the carrier frequency number of A community.
For achieving the above object, according to another aspect of the present invention, a kind of structural appraisal server is provided, comprises:
Estimating device, for estimating the coverage of each community according to cell information;
Selecting device, for according to the coverage of each described community be core cell choose comprise multiple community bunch;
First calculation element, for the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community according to place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree;
Second calculation element, for crossing cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.
First calculation element comprises: the first computing module, for calculating the average T CH carrier frequency number of Cu Nei community corresponding to described core cell; Second computing module is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range for channeling degree in compute cluster.
Second calculation element, crossing cover index between described bunch of calculating is
wherein, A community is core cell, and B community is the community that bunch external enwergy receives A area interference, Co
atoBrepresent that A community is to the co-channel interference coefficient of B community; TRX
arepresent the carrier frequency number of A community.
For achieving the above object, according to another aspect of the present invention, a kind of wireless network architecture evaluating system is provided, comprises:
Basic database, for storing the information of each community;
Interference matrix server, for generating interference matrix data according to mobile phone measurement report;
Structural appraisal server, for estimating the coverage of each community according to cell information; According to the coverage of described interference matrix data and each described community be core cell choose comprise multiple community bunch; According to the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community of place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree, and cross cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.
Wireless network architecture appraisal procedure of the present invention, Apparatus and system, by outdoor station core cell is chosen comprise multiple community bunch, that distinguishes the channeling Du Hecuwai community of community in compute cluster crosses cover index, the reason of accurate positioned radio web results complexity, be convenient to reduce wireless network architecture complexity, reduce interference in band, promote quality of wireless network and user awareness.
Accompanying drawing explanation
Fig. 1 is the flow chart of wireless network architecture appraisal procedure embodiment of the present invention;
Fig. 2 be the present invention bunch choose schematic diagram;
Fig. 3 is another flow chart of wireless network architecture appraisal procedure embodiment of the present invention
Fig. 4 is the structure chart of structural appraisal server example of the present invention;
Fig. 5 is the structure chart of wireless network architecture evaluating system embodiment of the present invention.
Embodiment
Between wireless network neighbor cell, overlap to a certain degree covers and is inevitable, and needs, by frequency separation, to avoid interference, meets and need by Coverage Control between community far away, raising frequency efficiency.Concept by introduce bunch in the present invention, to bunch in and a bunch outer community carry out analysis and assessment respectively, to determine the reason causing wireless network complexity.The community that the present invention relates to is outdoor macro station community.Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, wireless network architecture appraisal procedure embodiment of the present invention comprises the following steps:
Step 102, estimates the coverage of each community according to cell information;
Step 104, according to the coverage of community be core cell choose comprise multiple community bunch;
Step 106, calculate core cell corresponding bunch in channeling degree and bunch between cross cover index.
As shown in Figures 2 and 3, in step 102, from basic database, obtain the information of each community, comprise the cell informations such as the longitude and latitude of antenna, azimuth, frequency range.According to antenna longitude and latitude and the antenna azimuth of community, utilize Thiessen polygon principle, estimate the coverage of each community, what generate all outdoor station communities of the whole network estimates coverage.
In step 104, choose for core cell and comprise bunch mainly comprising of multiple community;
(1) Cu Nei community is chosen
As shown in Figure 2, Cu Nei community in core cell comprises: core cell A and core cell A with other of standing arrange to community B1, B2 and core cell A adjoin ground floor community C1-C6, in positive and negative 60 ° of core cell antenna azimuth and and the second layer community D1-D8 of a community, interval between core cell; If the antenna of core cell is omnidirectional antenna, then bunch to comprise all second layer communities of a community, interval between core cell;
(2) Cu Wai community is chosen
The Cu Wai community of core cell comprises: other communities be disturbed outside cell set Nei Chucunei community of core cell, namely generates interference matrix according to mobile phone measurement report; According to interference matrix select co-channel interference coefficient between core cell be not 0 community be disturbed cell set as described core cell; Select other communities be disturbed outside cell set Nei Chucunei community as Cu Wai community, as the E1-E16 in Fig. 2.
OMC or interference matrix processing server, according to the mobile phone measurement report during cellphone subscriber's call of collecting, generate interference relationships data---the interference matrix data between community.As shown in table 1 below.
Table 1
Mainly comprise the co-channel interference coefficient Co between community in interference matrix data, it can embody traffic distribution and wireless environment aspect substantial connection degree between community.Such as, B community (interfered cell) co-channel interference coefficient to A community (Serving cell) is Co
btoA, it is the number of 0 ~ 100%.His implication is that in the same situation frequently of hypothesis A and B, if traffic is based upon A community, its frame error rate is exactly Co
btoA.That is, if Liang Ge community is apart from closer, antenna is oriented mutual air exercise, and the Co value between Ze Zheliangge community will be larger, and the Relationship Comparison embodied between two stations is tight.If Liang Ge community is apart from distant, cover the region overlapped each other few, the Co value between Ze Zheliangge community will be smaller.
The community of core cell interference can be received in interference matrix, namely when traffic is based upon these communities, if it and core cell with frequently when, Co value is not 0.In other words, when namely these communities are as Serving cell, there is core cell in interference matrix data as Co value corresponding during interfered cell.And other community, because distance core cell is farther, the interference of core cell can not be subject to, therefore there is no related data in interference matrix.
Like this, when each community of analysis and assessment, one all can be had to be core with it bunch, assist confine the rational coverage in this community.
Overlap covering between Cu Nei community is conjunction is reason, needs, by frequency separation, to avoid interference.And under the condition of frequency resource-constrained, must ensure that carrier configuration is reasonable, if the carrier configuration at each station is too high, then cannot ensure normal channeling.The community of such vicinity cannot be avoided with frequency or adjacent frequency.Now structure optimization target be promote bunch in channeling degree, reduce bunch in interference.
The impact of core cell on Cu Wai community belonged to covering problem, needed by tested rotating platform, reduced the modes such as antenna height, avoid or reduce over coverage condition.
Respectively to channeling degree in compute cluster in step 106 and bunch between cross cover index be described in detail:
(1) in compute cluster, channeling degree comprises:
Step 1062, the condition according to presetting chooses cover layer community from the Cu Nei community comprising different frequency range, and the community choosing one of them frequency range is cover layer community; When the community of not this frequency range, choose the community of another frequency range as cover layer community; When there being two or more with this frequency range community covered, choose one of them as cover layer community;
Such as 2G network comprises 900M and 1800M two frequency ranges, needs in network that each is littlely distinguished into reprocessing behind cover layer community and capacity layer community:
A, same station arrange altogether to (co-sited same column is to finger: co-sited, i.e. same longitude and latitude; Same column is less than 30 degree to-antenna azimuth gap) there are a 900M community and a 1800M community, get the community of 900M as cover layer community, 1800M is as capacity layer community;
B, only have 1800M MPS process, without co-sited same column to 900M community, get 1800M community as cover layer community; If now also have other 1800M communities, other communities are as capacity layer community;
C, co-sited same column, to except a 900M community, also have other 900M communities: then get one of them 900M community as cover layer community, as got the relatively little community of CI as cover layer community, other are as capacity layer community; If now also have other 1800M communities, also as capacity layer community.
In structural appraisal process, different frequency range is divided into carry out Structure Calculation.If certain position only has a frequency range, such as certain certain direction of standing only has 900M community, does not have 1800M community.Then when calculating 1800M wireless network architecture, although this position does not have 1800M community, still suppose that there is the 1800M community of 1 0TCH carrier frequency at this place.
Step 1064, calculating average T CH carrier frequency number is: in bunch with described core cell with the community of frequency range total TCH carrier frequency number divided by bunch in cover layer community number;
Step 1066, in compute cluster, channeling degree is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range;
Such as, the TCH frequency of certain operator existing network 900M has 72, certain community corresponding bunch in have 10 with the community of core cell with frequency range, total TCH carrier frequency number is 60, cover layer community in bunch has 10, then bunch, channeling degree is 72/ (60/10)=12.
Calculate by this method, even if having a bunch outer community to cross cover this community place, also can not affect the quantitative analysis results of height being joined to problem dimension.
(2) crossing cover index between compute cluster is:
Step 1068, crossing cover index between bunch is:
wherein, A community is core cell, and B community is the community that bunch external enwergy receives A area interference, Co
atoBrepresent that A community is to the co-channel interference coefficient of B community; TRX
arepresent the carrier frequency number of A community.
Cross cover index value larger, show that covering (counting it covers beyond reasonable coverage, Ji Cuwai community) is crossed in A community more serious; If value is 0, show that A community did not exist coverage condition.
If the exist reality of each community to its Cu Wai community covers, belonged to covering problem.Even if this impact frequency resource takes it easy, and frequency optimization accomplishes the level of optimization, still can cause interference effect in band to Wi-Fi, be must avoid and the problem of emphasis optimization.
By above-mentioned result of calculation, can assess wireless network architecture, determine the reason causing wireless network architecture complexity, wireless network architecture be optimized expliciting the position in Coverage Control and the concrete greatly direction of configuration optimization two.
Wireless network architecture appraisal procedure of the present invention, by to choose outdoor station core cell bunch, that distinguishes the channeling Du Hecuwai community of community in compute cluster crosses cover index, the reason of accurate positioned radio web results complexity, thus be convenient to reduce wireless network architecture complexity, reduce interference in band, promote quality of wireless network and user awareness.
As shown in Figure 4, structural appraisal server example of the present invention comprises:
Estimating device 31, for estimating the coverage of each community according to cell information;
Selecting device 32, for according to the coverage of described community be core cell choose comprise multiple community bunch;
First calculation element 33, for the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community according to place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree;
Second calculation element 34, for crossing cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.
Wherein, the first calculation element 33 comprises:
First computing module 331, for calculating the average T CH carrier frequency number of Cu Nei community corresponding to described core cell;
Second computing module 332 is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range for channeling degree in compute cluster.
Second calculation element, crossing cover index between described bunch of calculating is
wherein, A community is core cell, and B community is the community that bunch external enwergy receives A area interference, Co
atoBrepresent that A community is to the co-channel interference coefficient of B community; TRX
arepresent the carrier frequency number of A community.
The specific works process of each device in the present embodiment describes in detail in said method embodiment, does not repeat them here.
Structural appraisal server of the present invention is by choose outdoor station core cell bunch, that distinguishes the channeling Du Hecuwai community of community in compute cluster crosses cover index, the reason of accurate positioned radio web results complexity, thus be convenient to reduce wireless network architecture complexity, reduce interference in band, promote quality of wireless network and user awareness.
As shown in Figure 5, wireless network architecture evaluating system embodiment of the present invention comprises:
Basic database 40, for storing the information of each community;
Interference matrix server 50, for generating interference matrix according to mobile phone measurement report;
Structural appraisal server 30, for estimating the coverage of each community according to cell information; According to the coverage of interference matrix and each community be core cell choose comprise multiple community bunch; According to the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community of place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree, and cross cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.
Wireless network architecture evaluating system of the present invention, by to choose outdoor station core cell bunch, that distinguishes the channeling Du Hecuwai community of community in compute cluster crosses cover index, the reason of accurate positioned radio web results complexity, thus be convenient to reduce wireless network architecture complexity, reduce interference in band, promote quality of wireless network and user awareness.
It is noted that above embodiment is only in order to illustrate the present invention and unrestricted, the present invention is also not limited in above-mentioned citing, and all do not depart from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in right of the present invention.
Claims (6)
1. a wireless network architecture appraisal procedure, is characterized in that, comprising:
The coverage of each community is estimated according to cell information;
According to the coverage of each community be core cell choose comprise multiple community bunch;
According to the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community of place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree, and cross cover index according between the carrier frequency number compute cluster of interference matrix data and core cell;
Described Cu Nei community comprises: described core cell, with described core cell with stand other arrange to community, the ground floor community adjacent with described core cell, when the antenna of described core cell is directional antenna, in positive and negative 60 ° of described core cell antenna azimuth and and between described core cell the second layer community of a community, interval, antenna when core cell is omnidirectional antenna, and all second layer communities of a community, interval between core cell; Cu Wai community comprises: other communities be disturbed outside cell set Nei Chucunei community of described core cell;
The average T CH carrier frequency number of the described available TCH frequency Shuo Jicunei community according to place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree comprise: the average T CH carrier frequency number calculating Cu Nei community corresponding to described core cell; In compute cluster, channeling degree is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range;
The average T CH carrier frequency number of the Cu Nei community that the described core cell of described calculating is corresponding comprises: the condition according to presetting chooses cover layer community from the Cu Nei community comprising different frequency range, and the community choosing one of them frequency range is cover layer community; When the community of not this frequency range, choose the community of another frequency range as cover layer community; When there being two or more with this frequency range community covered, choose one of them as cover layer community; Calculating average T CH carrier frequency number is: in bunch with described core cell with the community of frequency range total TCH carrier frequency number divided by bunch in cover layer community number;
Crossing cover index between the described carrier frequency number compute cluster according to interference matrix data and core cell is
the carrier frequency number in district.
2. wireless network architecture appraisal procedure according to claim 1, is characterized in that, the described coverage estimating each community according to cell information comprises:
According to longitude and latitude and the antenna azimuth of the antenna of described community, utilize Thiessen polygon principle, estimate the coverage of each community.
3. wireless network architecture appraisal procedure according to claim 1, is characterized in that, the coverage of each community described in described basis is that core cell is chosen and comprised bunch comprising of multiple community:
Interference matrix is generated according to mobile phone measurement report;
According to described interference matrix select co-channel interference coefficient between described core cell be not 0 community be disturbed cell set as described core cell;
Select other communities be disturbed outside cell set Nei Chucunei community as Cu Wai community.
4. a structural appraisal server, is characterized in that, comprising:
Estimating device, for estimating the coverage of each community according to cell information;
Selecting device, for according to the coverage of community described in each be core cell choose comprise multiple community bunch;
First calculation element, for the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community according to place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree;
Second calculation element, for crossing cover index according between the carrier frequency number compute cluster of interference matrix data and core cell;
Described first calculation element comprises:
First computing module, for calculating the average T CH carrier frequency number of Cu Nei community corresponding to described core cell;
Second computing module is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range for channeling degree in compute cluster;
community is to the co-channel interference coefficient of B community; TRX
arepresent the carrier frequency number of A community;
Described Cu Nei community comprises: described core cell, with described core cell with stand other arrange to community, the ground floor community adjacent with described core cell, when the antenna of described core cell is directional antenna, in positive and negative 60 ° of described core cell antenna azimuth and and between described core cell the second layer community of a community, interval, antenna when core cell is omnidirectional antenna, and all second layer communities of a community, interval between core cell; Cu Wai community comprises: other communities be disturbed outside cell set Nei Chucunei community of described core cell;
Described first computing module specifically for, according to preset condition from the Cu Nei community comprising different frequency range, choose cover layer community, the community choosing one of them frequency range is cover layer community; When the community of not this frequency range, choose the community of another frequency range as cover layer community; When there being two or more with this frequency range community covered, choose one of them as cover layer community; Calculating average T CH carrier frequency number is: in bunch with described core cell with the community of frequency range total TCH carrier frequency number divided by bunch in cover layer community number.
5. a wireless network architecture evaluating system, is characterized in that, comprising:
Basic database, for storing the information of each community;
Interference matrix server, for generating interference matrix data according to mobile phone measurement report;
Structural appraisal server according to claim 4, for estimating the coverage of each community according to cell information; According to the coverage of described interference matrix data and each described community be core cell choose comprise multiple community bunch; According to the average T CH carrier frequency number of the available TCH frequency Shuo Jicunei community of place, described core cell frequency range calculate described core cell corresponding bunch in channeling degree, and cross cover index according between the carrier frequency number compute cluster of interference matrix data and core cell.
6. wireless network architecture evaluating system according to claim 5, is characterized in that, described structural appraisal server comprises:
First calculation element, for calculating the average T CH carrier frequency number of Cu Nei community corresponding to described core cell; In compute cluster, channeling degree is the average T CH carrier frequency number of available TCH frequency number divided by described Cu Nei community of place, described core cell frequency range;
community is to the co-channel interference coefficient of B community; TRX
arepresent the carrier frequency number of A community.
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