CN103167536A - Assessment method, device and system of wireless network structure - Google Patents
Assessment method, device and system of wireless network structure Download PDFInfo
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- CN103167536A CN103167536A CN2011104124457A CN201110412445A CN103167536A CN 103167536 A CN103167536 A CN 103167536A CN 2011104124457 A CN2011104124457 A CN 2011104124457A CN 201110412445 A CN201110412445 A CN 201110412445A CN 103167536 A CN103167536 A CN 103167536A
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention discloses an assessment method, a device and a system of a wireless network structure, wherein the assessment method of the wireless network structure comprises the following steps: coverage of each residential area is estimated according to residential area information; clusters which comprise a plurality of residential areas are chose according to that the coverage of the residential areas covers a core residential area; frequency reuse degrees in the clusters corresponding to the core residential area are calculated according to available traffic channel (TCH) frequency point numbers of a frequency range in which the core residential area is located and average TCH carrier frequency numbers of the residential areas in the clusters; and overcovering index numbers between the clusters are calculated according to interference matrix data and the carrier frequency numbers of the core residential area. Due to the fact that the clusters of the core residential area of an outdoor station are chosen, the frequency reuse degrees in the clusters and the overcovering index numbers outside the clusters are calculated respectively, accurate positioning the wireless network structure is complex in the prior art, the assessment method, the device and the system of the wireless network structure has the advantages that complexity of the wireless network structure is lowered, interference in-band is lowered, and wireless network quality and user perception are improved.
Description
Technical field
The present invention relates to a kind of wireless technical field, relate in particular to a kind of wireless network architecture appraisal procedure, Apparatus and system.
Background technology
For satisfying the rapid growth of telephone traffic, operator continues to increase the input of wireless network, and the wireless network complexity is also more and more higher.In the situation that original frequency resource is constant, the wireless network architecture complexity has caused in more and more serious band and has disturbed, and can't solve by frequency optimization.Reduce the wireless network architecture complexity, reduce in band and disturb, become operator and promoted quality of wireless network, guarantee user awareness, keep the vital task of industrial competition.
In prior art, by different index definitions, quantitative analysis the complexity of wireless network architecture.Due to the restriction of method itself, None-identified or assessment cause baroque reason, are due to the configuration of single station excessive (in the zone, frequency is not enough), or cause because crossing of some residential quarters covers (residential quarter that should not cover here covers).For example come evaluation structure complexity, following formula by wireless network architecture index (calculating the carrier frequency number that covers in a zone):
Carrier frequency is more, and structure is more complicated.Cause baroque these carrier frequency but have no idea to distinguish, which is should not cover here, need to carry out Coverage Control; Which should cover here, but belongs to the too much problem of single station carrier frequency number; Which is that normal covering and carrier frequency number are also rational.
Actually cause that the wireless network architecture complexity has the problem of following two aspects:
1, cross covering: the carrier frequency number of each residential quarter is few, but owing to effectively not controlling covering, the carrier frequency number that causes the subregion to cover is too much; This situation even frequency optimization also can't avoid being with interior interference to ultimate attainment, must be carried out coverage optimization.
2, high configuration: Coverage Control is good, do not have too much overlapping covered, but because some cell carrier frequencies configurations are too high, cause complex structure.For limited frequency, these regional frequency resources are nervous, are difficult to avoid frequently disturb with adjacent.This situation need to reduce carrier configuration by subtracting appearance or cell splitting.
Actual conditions were to cover to intert with high allocation problem to be in the same place, existing wireless network architecture appraisal procedure, cause this two aspects problem of complex structure because can't effectively distinguish, also can't clearly this subtract configuration or control covering in optimization, can only grope attempting adjusting.
The how clear and definite wireless network architecture complexity is navigated to " crossed and covered ", " high configuration " two aspects, is the bottleneck that industry is demanded urgently breaking through.
Summary of the invention
The object of the invention is to, a kind of wireless network architecture appraisal procedure, Apparatus and system are provided, and accurate positioned radio network is the reason of complexity as a result, and the personnel of maintaining easily reduce the wireless network architecture complexity, reduce in band and disturb, promote quality of wireless network and user awareness.
For achieving the above object, according to an aspect of the present invention, provide a kind of wireless network architecture appraisal procedure, comprising:
Estimate the coverage of each residential quarter according to cell information;
According to the coverage of each residential quarter be core cell choose comprise a plurality of residential quarters bunch;
According to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree, and count according to the carrier frequency of interference matrix data and core cell and cross cover index between compute cluster.
Wherein, the described coverage of estimating each residential quarter according to cell information comprises: longitude and latitude and antenna azimuth according to the antenna of described residential quarter, utilize the Thiessen polygon principle, and estimate the coverage of each residential quarter.
In described bunch, the residential quarter comprises: described core cell, with described core cell with the station other row to the residential quarter, ground floor residential quarter with described core cell adjacency, when the antenna of described core cell is directional antenna, in positive and negative 60 ° of described core cell antenna azimuth and and described core cell between the second layer residential quarter of a residential quarter, interval, when the antenna of core cell is omnidirectional antenna, and all second layers residential quarter of a residential quarter, interval between core cell; Bunch outer residential quarter comprises: described core cell be disturbed in cell set except bunch in other residential quarters the residential quarter.
In addition, be that core cell is chosen and comprised bunch comprising of a plurality of residential quarters according to the coverage of described residential quarter: generate interference matrix according to mobile phone measurement report; According to described interference matrix select and described core cell between the co-channel interference coefficient be not that 0 residential quarter is as the cell set that is disturbed of described core cell; Selection be disturbed in cell set except bunch in other conduct bunch outer residential quarters, residential quarters of residential quarter.
Calculate described core cell corresponding bunch in the channeling degree comprise: calculate described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter; The channeling degree is that the available TCH frequency number of described core cell place frequency range is divided by the average T CH carrier frequency number of residential quarter in described bunch in compute cluster.
Calculate described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter comprise: according to default condition from comprise different frequency range bunch in choose the cover layer residential quarter the residential quarter, the residential quarter of choosing one of them frequency range is the cover layer residential quarter; When the residential quarter of this frequency range not, choose the residential quarter of another frequency range as the cover layer residential quarter; When two or more are arranged with this frequency range residential quarter that covers, choose one of them as the cover layer residential quarter; Calculating average T CH carrier frequency number is: in bunch with described core cell with total TCH carrier frequency number of the residential quarter of frequency range divided by bunch in cover layer residential quarter number.
Calculate described core cell bunch between cross cover index and be:
For achieving the above object, according to another aspect of the present invention, provide a kind of structural appraisal server, comprising:
Estimating device is for estimate the coverage of each residential quarter according to cell information;
Selecting device, be used for coverage according to each described residential quarter and be core cell choose comprise a plurality of residential quarters bunch;
The first calculation element, be used for according to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree;
The second calculation element is used for counting according to the carrier frequency of interference matrix data and core cell and crosses cover index between compute cluster.
The first calculation element comprises: the first computing module, be used for calculating described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter; The second computing module, the available TCH frequency number that is used for channeling degree in compute cluster and is described core cell place frequency range is divided by the average T CH carrier frequency number of residential quarter in described bunch.
The second calculation element is crossed cover index between calculating described bunch and is
Wherein, the A residential quarter is core cell, the residential quarter that B receives the A area interference for bunch external enwergy in the residential quarter, Co
AtoBThe co-channel interference coefficient of expression A residential quarter to the B residential quarter; TRX
AThe carrier frequency number of expression A residential quarter.
For achieving the above object, according to another aspect of the present invention, provide a kind of wireless network architecture evaluating system, comprising:
Basic database is for the information of each residential quarter of storage;
The interference matrix server is used for generating the interference matrix data according to mobile phone measurement report;
The structural appraisal server is for estimate the coverage of each residential quarter according to cell information; According to the coverage of described interference matrix data and each described residential quarter be core cell choose comprise a plurality of residential quarters bunch; According to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree, and count according to the carrier frequency of interference matrix data and core cell and cross cover index between compute cluster.
Wireless network architecture appraisal procedure of the present invention, Apparatus and system, by the outdoor station core cell is chosen comprise a plurality of residential quarters bunch, distinguish the channeling degree of residential quarter in compute cluster and the cover index excessively of bunch outer residential quarter, accurate positioned radio network is the reason of complexity as a result, be convenient to reduce the wireless network architecture complexity, reduce in band and disturb, promote quality of wireless network and user awareness.
Description of drawings
Fig. 1 is the flow chart of wireless network architecture appraisal procedure embodiment of the present invention;
Fig. 2 is the present invention's bunch the schematic diagram of choosing;
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 the wireless network neighbor cell, to a certain degree overlapping covering is inevitable, and needs to avoid interference by frequency separation, and meeting needs by Coverage Control between residential quarter far away, the raising frequency efficiency.Concept by introducing bunch in the present invention, to bunch in and a bunch outer residential quarter carry out respectively analysis and assessment, to determine to cause the reason of wireless network complexity.The residential quarter that the present invention relates to is residential quarter, outdoor grand station.The present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, wireless network architecture appraisal procedure embodiment of the present invention comprises the following steps:
Step 106, calculate core cell corresponding bunch in the channeling degree and bunch between cross cover index.
As shown in Figures 2 and 3, in step 102, obtain the information of each residential quarter from basic database, comprise the cell informations such as longitude and latitude, azimuth, frequency range of antenna.Antenna longitude and latitude and antenna azimuth according to the residential quarter utilize the Thiessen polygon principle, estimate the coverage of each residential quarter, have generated the coverage of estimating of all outdoor stations of the whole network residential quarters.
In step 104, choose for core cell and comprise bunch mainly comprising of a plurality of residential quarters;
(1) choose bunch in the residential quarter
As shown in Figure 2, in core cell bunch, the residential quarter comprises: core cell A, and core cell A with other row at station to residential quarter B1, B2, and positive and negative 60 ° of ground floor residential quarter C1-C6, the core cell antenna azimuth of core cell A adjacency in and and core cell between the second layer residential quarter D1-D8 of a residential quarter, interval; If the antenna of core cell is omnidirectional antenna, bunch comprise and core cell between all second layers residential quarter of a residential quarter, interval;
(2) choose a bunch outer residential quarter
Bunch outer residential quarter of core cell comprises: core cell be disturbed in cell set except bunch in other residential quarters of residential quarter, namely according to mobile phone measurement report generation interference matrix; According to interference matrix select and core cell between the co-channel interference coefficient be not that 0 residential quarter is as the cell set that is disturbed of described core cell; Selection be disturbed in cell set except bunch in other conduct bunch outer residential quarters, residential quarters of residential quarter, as the E1-E16 in Fig. 2.
Mobile phone measurement report during OMC or interference matrix processing server are conversed according to the cellphone subscriber who collects generates interference relationships data---the interference matrix data between the residential quarter.As shown in table 1 below.
Table 1
Mainly comprise the co-channel interference coefficient Co between the residential quarter in the interference matrix data, it can embody between the residential quarter that traffic distributes and wireless environment aspect substantial connection degree.For example, B residential quarter (interfered cell) is Co to the co-channel interference coefficient of A residential quarter (Serving cell)
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 the A residential quarter, its frame error rate is exactly Co
BtoAThat is to say, if two residential quarter distances are closer, antenna is oriented mutual air exercise, and the Co value between these two residential quarters will be larger, embodies two Relationship Comparisons between the station tight.If two residential quarter distances are distant, cover the zone that overlaps each other few, the Co value between these two residential quarters will be smaller.
Can receive the residential quarter that core cell is disturbed in interference matrix, namely when traffic is based upon these residential quarters, if it and core cell with frequency situation under, the Co value is not 0.In other words, when namely these residential quarters are as Serving cell, corresponding Co value when core cell is arranged in the interference matrix data as interfered cell.And other residential quarter because farther apart from core cell, can not be subject to the interference of core cell, so there is no related data in interference matrix.
Like this, in analysis and assessment each residential quarters, all can have one take it as core bunch, assist to confine the rational coverage in this residential quarter.
It is reason that overlapping covering in bunch between the residential quarter is closed, and needs to avoid interference by frequency separation.And under the condition of frequency resource-constrained, must guarantee that carrier configuration is reasonable, if the carrier configuration at each station is too high, can't guarantee normal channeling.Contiguous residential quarter can't be avoided with frequency or frequently adjacent like this.This moment, the structure optimization target was the channeling degree in promoting bunch, disturbed in reducing bunch.
Core cell belonged to covering problem to the impact of bunch outer residential quarter, need to be by the antenna adjustment, reduce the mode such as antenna height, and avoid or reduced coverage condition.
Respectively to channeling degree in compute cluster in step 106 and bunch between cross cover index and be elaborated:
(1) in compute cluster, the channeling degree comprises:
For example the 2G network comprises 900M and two frequency ranges of 1800M, processes after each residential quarter in network need to being divided into cover layer residential quarter and capacity layer residential quarter again:
A, with the station altogether row to (same column of standing altogether is to finger: station, i.e. same longitude and latitude altogether; Same column to-antenna azimuth gap less than 30 degree) a 900M residential quarter and a 1800M residential quarter are arranged, get the residential quarter of 900M as the cover layer residential quarter, 1800M is as the capacity layer residential quarter;
B, only have the 1800M residential quarter to cover, without the same column of standing altogether to the 900M residential quarter, get the 1800M residential quarter as the cover layer residential quarter; If also have other 1800M residential quarter this moment, other residential quarters are as the capacity layer residential quarter;
C, stand same column to except a 900M residential quarter altogether, also have other 900M residential quarter: get one of them 900M residential quarter as the cover layer residential quarter, as the residential quarter of getting the CI less is as the cover layer residential quarter, other are as the capacity layer residential quarter; If also have other 1800M residential quarter this moment, also as the capacity layer residential quarter.
In the structural appraisal process, be divided into different frequency range and carry out Structure Calculation.If certain position only has a frequency range, for example certain certain direction of standing only has the 900M residential quarter, there is no the 1800M residential quarter.When calculating the 1800M wireless network architecture, although this position does not have the 1800M residential quarter, suppose that still there is the 1800M residential quarter of 1 0TCH carrier frequency at this place.
For example, the TCH frequency of certain existing network 900M of operator has 72, certain residential quarter corresponding bunch in have 10 with the residential quarter of core cell with frequency range, total TCH carrier frequency number is 60, cover layer residential quarter in bunch has 10, bunch in the channeling degree be 72/ (60/10)=12.
Calculate by this method, cover this place, residential quarter even there is a bunch outer residential quarter to cross, also can not affect the quantitative analysis results of height being joined problem dimension.
(2) crossing cover index between compute cluster is:
Cross the cover index value larger, show that covering (count it and cover beyond reasonable coverage, be i.e. bunch outer residential quarter) is crossed in the A residential quarter more serious; If value is 0, show that there was not coverage condition in the A residential quarter.
If each residential quarter covers the reality that exists of the outer residential quarter of its bunch, belonged to covering problem.Even this impact frequency resource takes it easy, and frequency optimization accomplished the level of optimization, still can cause interference effect in band to Wi-Fi, is must avoid and problem that emphasis is optimized.
By above-mentioned result of calculation, can assess wireless network architecture, determine to cause the reason of wireless network architecture complexity, wireless network architecture is optimized expliciting the position on Coverage Control and the large concrete direction of configuration optimization two.
Wireless network architecture appraisal procedure of the present invention, by the outdoor station core cell being chosen bunch, distinguish the channeling degree of residential quarter in compute cluster and the cover index excessively of bunch outer residential quarter, accurate positioned radio network is the reason of complexity as a result, thereby be convenient to reduce the wireless network architecture complexity, reduce in band and disturb, 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 is for estimate the coverage of each residential quarter according to cell information;
Selecting device 32, be used for coverage according to described residential quarter and be core cell choose comprise a plurality of residential quarters bunch;
The first calculation element 33, be used for according to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree;
The second calculation element 34 is used for counting according to the carrier frequency of interference matrix data and core cell and crosses cover index between compute cluster.
Wherein, the first calculation element 33 comprises:
The first computing module 331, be used for calculating described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter;
The second computing module 332, the available TCH frequency number that is used for channeling degree in compute cluster and is described core cell place frequency range is divided by the average T CH carrier frequency number of residential quarter in described bunch.
The second calculation element is crossed cover index between calculating described bunch and is
Wherein, the A residential quarter is core cell, the residential quarter that B receives the A area interference for bunch external enwergy in the residential quarter, Co
AtoBThe co-channel interference coefficient of expression A residential quarter to the B residential quarter; TRX
AThe carrier frequency number of expression A residential quarter.
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 choosing the outdoor station core cell bunch, distinguish the channeling degree of residential quarter in compute cluster and the cover index excessively of bunch outer residential quarter, accurate positioned radio network is the reason of complexity as a result, thereby be convenient to reduce the wireless network architecture complexity, reduce in band and disturb, promote quality of wireless network and user awareness.
As shown in Figure 5, wireless network architecture evaluating system embodiment of the present invention comprises:
Wireless network architecture evaluating system of the present invention, by the outdoor station core cell being chosen bunch, distinguish the channeling degree of residential quarter in compute cluster and the cover index excessively of bunch outer residential quarter, accurate positioned radio network is the reason of complexity as a result, thereby be convenient to reduce the wireless network architecture complexity, reduce in band and disturb, promote quality of wireless network and user awareness.
It should be noted that: above embodiment is only unrestricted in order to the present invention to be described, the present invention also is not limited in above-mentioned giving an example, and all do not break away from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in claim scope of the present invention.
Claims (12)
1. a wireless network architecture appraisal procedure, is characterized in that, comprising:
Estimate the coverage of each residential quarter according to cell information;
According to the coverage of each residential quarter be core cell choose comprise a plurality of residential quarters bunch;
According to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree, and count according to the carrier frequency of interference matrix data and core cell and cross cover index between compute cluster.
2. wireless network architecture appraisal procedure according to claim 1, is characterized in that, the described coverage of estimating each residential quarter according to cell information comprises:
Longitude and latitude and antenna azimuth according to the antenna of described residential quarter utilize the Thiessen polygon principle, estimate the coverage of each residential quarter.
3. wireless network architecture appraisal procedure according to claim 2, is characterized in that, the residential quarter comprises in described bunch:
Described core cell, with described core cell with the station other row to the residential quarter, ground floor residential quarter with described core cell adjacency, when the antenna of described core cell is directional antenna, in positive and negative 60 ° of described core cell antenna azimuth and and described core cell between the second layer residential quarter of a residential quarter, interval, when the antenna of core cell is omnidirectional antenna, and all second layers residential quarter of a residential quarter, interval between core cell;
Bunch outer residential quarter comprises: described core cell be disturbed in cell set except bunch in other residential quarters the residential quarter.
4. wireless network architecture appraisal procedure according to claim 3, is characterized in that, described coverage according to described each residential quarter is that core cell is chosen and comprised bunch comprising of a plurality of residential quarters:
Generate interference matrix according to mobile phone measurement report;
According to described interference matrix select and described core cell between the co-channel interference coefficient be not that 0 residential quarter is as the cell set that is disturbed of described core cell;
Selection be disturbed in cell set except bunch in other conduct bunch outer residential quarters, residential quarters of residential quarter.
5. wireless network architecture appraisal procedure according to claim 3, it is characterized in that, described according to described core cell place frequency range available TCH frequency number and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree comprise:
Calculate described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter;
The channeling degree is that the available TCH frequency number of described core cell place frequency range is divided by the average T CH carrier frequency number of residential quarter in described bunch in compute cluster.
6. wireless network architecture appraisal procedure according to claim 5, is characterized in that, the described core cell of described calculating corresponding bunch in the average T CH carrier frequency number of residential quarter comprise:
According to default condition from comprise different frequency range bunch in choose the cover layer residential quarter the residential quarter, the residential quarter of choosing one of them frequency range is the cover layer residential quarter; When the residential quarter of this frequency range not, choose the residential quarter of another frequency range as the cover layer residential quarter; When two or more are arranged with this frequency range residential quarter that covers, choose one of them as the cover layer residential quarter;
Calculating average T CH carrier frequency number is: in bunch with described core cell with total TCH carrier frequency number of the residential quarter of frequency range divided by bunch in cover layer residential quarter number.
7. wireless network architecture appraisal procedure according to claim 4, is characterized in that, described carrier frequency according to interference matrix data and core cell is counted between compute cluster and to be crossed cover index and be
Wherein, the A residential quarter is core cell, the residential quarter that B receives the A area interference for bunch external enwergy in the residential quarter, Co
AtoBThe co-channel interference coefficient of expression A residential quarter to the B residential quarter; TRX
AThe carrier frequency number of expression A residential quarter.
8. a structural appraisal server, is characterized in that, comprising:
Estimating device is for estimate the coverage of each residential quarter according to cell information;
Selecting device, be used for coverage according to each described residential quarter and be core cell choose comprise a plurality of residential quarters bunch;
The first calculation element, be used for according to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree;
The second calculation element is used for counting according to the carrier frequency of interference matrix data and core cell and crosses cover index between compute cluster.
9. structural appraisal server described according to right 8, is characterized in that, described the first calculation element comprises:
The first computing module, be used for calculating described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter;
The second computing module, the available TCH frequency number that is used for channeling degree in compute cluster and is described core cell place frequency range is divided by the average T CH carrier frequency number of residential quarter in described bunch.
10. structural appraisal server described according to right 8, is characterized in that, described the second calculation element is crossed cover index between calculating described bunch and is
Wherein, the A residential quarter is core cell, the residential quarter that B receives the A area interference for bunch external enwergy in the residential quarter, Co
AtoBThe co-channel interference coefficient of expression A residential quarter to the B residential quarter; TRX
AThe carrier frequency number of expression A residential quarter.
11. a wireless network architecture evaluating system is characterized in that, comprising:
Basic database is for the information of each residential quarter of storage;
The interference matrix server is used for generating the interference matrix data according to mobile phone measurement report;
The structural appraisal server is for estimate the coverage of each residential quarter according to cell information; According to the coverage of described interference matrix data and each described residential quarter be core cell choose comprise a plurality of residential quarters bunch; According to the available TCH frequency number of described core cell place frequency range and bunch in the average T CH carrier frequency number of residential quarter calculate described core cell corresponding bunch in the channeling degree, and count according to the carrier frequency of interference matrix data and core cell and cross cover index between compute cluster.
12. wireless network architecture evaluating system according to claim 11 is characterized in that, described structural appraisal server comprises:
The first calculation element, be used for calculating described core cell corresponding bunch in the average T CH carrier frequency number of residential quarter; The channeling degree is that the available TCH frequency number of described core cell place frequency range is divided by the average T CH carrier frequency number of residential quarter in described bunch in compute cluster;
The second computing module, between described bunch, the mistake cover index is for calculating
Wherein, the A residential quarter is core cell, the residential quarter that B receives the A area interference for bunch external enwergy in the residential quarter, Co
AtoBThe co-channel interference coefficient of expression A residential quarter to the B residential quarter; TRX
AThe carrier frequency number of expression A residential quarter.
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