CN103763728A - Method for analyzing CommonBCCH coverage difference - Google Patents
Method for analyzing CommonBCCH coverage difference Download PDFInfo
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- CN103763728A CN103763728A CN201410004918.3A CN201410004918A CN103763728A CN 103763728 A CN103763728 A CN 103763728A CN 201410004918 A CN201410004918 A CN 201410004918A CN 103763728 A CN103763728 A CN 103763728A
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Abstract
The invention relates to a method for analyzing the CommonBCCH coverage difference. The method includes the steps of conducting matching recognition on reported information according to the BCCH+BSIC combination, according to measurement information reported to a network side by a mobile terminal every 480 ms, and through combination with an inter-network cell configuration file, calculating the influence of nearby cells on each BTS to obtain correlation coefficients at the same frequency, then, calculating the relevancy of the different BTSs of each CommonBCCH cell, and determining whether the coverage difference exists between all the different BTSs of the CommonBCCH cells or not. According to the method, useful information can be extracted from mass mobile measurement data, whether the coverage difference exists between all the BTSs, in different frequency bands, of the CommonBCCH cells or not can be reflected through calculation, and therefore whether the coverage difference exists between all the different BTSs of the CommonBCCH cells or not can be analyzed in a qualitative mode, and the analysis result can provide powerful support for network maintenance and network optimization.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method that CommonBCCH of analysis covers difference.
Background technology
At GSM(Global System for Mobile communication, global system for mobile communications) in system, under Nokia Siemens Networks equipment, often the alien frequencies BTS such as 900 and 1800 are covered as same community, become CommonBCCH community, be characterized in that physics is independent, unified logic.If in physical connection, it is inconsistent that the different B TS of same community covers, and can cause that mobile terminal in overlay area rises to exhale difficulty, the poor even abnormal call drop interruption of communication quality etc., has a strong impact on user awareness; Meanwhile, problems also can cause the appliance services amount putting into effect low, is not fully utilized, and causes waste; In addition, problems, owing to covering the characteristic of difference, cannot carry out frequency optimization by MR, affects communication quality.Based on above situation, antenna feeder is carried out in CommonBCCH community and connect anti-investigation, extremely important in Optimization Work.
Summary of the invention
The object of this invention is to provide a kind of method that CommonBCCH of analysis covers difference, whether CommonBCCH community is existed and connect the anti-qualitative analysis of carrying out, for radio network optimization work provides a kind of effective method and means.
The object of the invention is to be achieved through the following technical solutions:
The invention provides a kind of method of analyzing CommonBCCH covering difference based on the alien frequencies BTS co-channel interference coefficient degree of correlation, it comprises:
Step S100, the relevant information of collection network run duration mobile terminal reporting; In this information, mainly comprise: the level intensity of mobile terminal to reside cell, near the level intensity of community, near the sampling number of community, and near the frequency of the BCCH broadcast channel of community use and the identification code BSIC of community etc.;
Step S200, in conjunction with the longitude and latitude of Wang Nei community and BCCH frequency and the BSIC data of existing network configuration, the information that the BTS of each each frequency range of community is collected, matches concrete community, calculates and can produce the percentage with frequency impact;
Step S300, the same frequency generating for different frequency range BTS affects ratio data, the degree of correlation between different frequency range is calculated respectively in each community, if its degree of correlation of CommonBCCH community lower than 0.7, just may exist the reverse connection of antenna between the excessive or different districts of the covering difference of different frequency range.
Wherein, in step S100, the process of the MR data of collection network Nei Ge community comprises:
Near the community BCCH frequency of each CommonBCCH community is added up, and the state of activation BCCH that adds each CommonBCCH community measures in list, afterwards, mobile terminal will be measured the intensity of each BCCH frequency in communication process, and identifying report network side after BSIC, network side can carry out respectively record according to BTS;
Optimization personnel obtain the information of different frequency range BTS record, for further work ready.
Wherein, step S200 comprises: owing to only comprising BCCH and the BSIC information of adjacent cell in metrical information, so need to be according to information such as the BCCH of the longitude of Wang Nei community, latitude and existing network configuration and BSIC, the metrical information of obtaining is mated, determine the interfered cell that metrical information is corresponding.Just can calculate afterwards the co-channel interference coefficient of each community Dui Zhe community different B TS near.
Wherein, step S300 comprises:
The co-channel interference coefficient that the BTS of two of each CommonBCCH community frequency ranges is subject to different districts carries out relatedness computation, and formula is as follows:
The co-channel interference coefficient of x:CommonBCCH first frequency range BTS and each peripheral cell
The co-channel interference coefficient of second frequency range BTS of y:CommonBCCH and each peripheral cell
Select the degree of correlation lower than 0.7 CommonBCCH community, these communities exist double frequency BTS to cover the excessive problem of difference, if there are a plurality of such communities in same base station, just may have the problem of reverse connection of antenna.
Accompanying drawing explanation
Fig. 1 is the flow chart of first embodiment of the invention;
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the method that the present invention is obtained to Common community covering difference is described in further detail.
In the embodiment of the present invention, take gsm wireless communication network as example, specific embodiments of the invention are described, but the present invention is not limited to gsm wireless communication network.
A kind of method of analyzing CommonBCCH covering difference based on the alien frequencies BTS co-channel interference coefficient degree of correlation that first embodiment of the invention is lifted, as a kind of embodiment, its flow process as shown in Figure 1, comprises the steps:
Step S100, the relevant information of collection network run duration mobile terminal reporting; In this information, mainly comprise: the level intensity of mobile terminal to reside cell, near the level intensity of community, near the sampling number of community, and near the frequency of the BCCH broadcast channel of community use and the identification code BSIC of community etc.
According to network configuration data, compile near the BCCH frequency point information of all communities, each CommonBCCH community, and be added in the Active Bcch Allocation table of CommonBCCH community, after adding this table, mobile terminal will be measured these BCCH frequencies in communication process, identification BSIC code, and level intensity is reported to network side, mobile terminal also can together report the signal strength signal intensity of current area simultaneously.
Measurement Report, measurement report.MR is one of Main Basis of assessment wireless environment quality.MR refers to information 470ms on every 480ms(signaling channel in Traffic Channel) send a secondary data, for gsm system, MR is the Main Means that network side obtains terminal wireless information, mainly comprises two parts: upward signal information and downstream signal information.Content comprises BCCH intensity, BSIC information, level intensity, distance and signal quality Quality etc.
In Nokia Siemens Networks system, the metrical information that network side is collected is deposited according to each BTS, and the information of collecting under each BCCH+BSIC is deposited separately.
Step S200, according to step S201 to S204, the metrical information of different frequency range is processed respectively, in conjunction with the configuration information of each CommonBCCH community in net, the BCCH+BSIC information obtaining according to every metrical information, mate with peripheral cell, draw afterwards co-channel interference coefficient.Concrete step is as follows:
Step S201, obtains the configuration information of all communities in network, comprises latitude and longitude information, BCCH/BSIC configuration information, adjacent cell configuration information etc.By not stopping the metrical information that frequency range BTS gets under each CommonBCCH community, do not mate with configuration information respectively, have identical BCCH+BSIC adjacent cell proceed to step S204, what find no identical BCCH+BSIC adjacent cell proceeds to step S202;
Step S202, near the community, non-adjacent area screening CommonBCCH community within the scope of certain distance, this distance is variable according to scene, general city is set to 5KM, suburb is set to 10KM, and mountain area is set to 15KM, also can modify according to various places network condition and Optimization Experience;
Step S203, to the community, non-adjacent area within the scope of this, carries out BCCH+BSIC coupling again, if match a plurality of communities, gets nearest community, if coupling less than, this metrical information is dropped;
Step S204, the information that will match is calculated.
In gsm system, stipulate, if adjacent cell signal strength signal intensity-Serving cell signal strength signal intensity >-9dB, when two communities are with frequency in the case, can cause interference, the probability of >-9dB is called co-channel interference coefficient, by the data in metrical information, can obtain each Serving cell and near community co-channel interference coefficient one to one.
By calculating, the BTS that can obtain each each frequency range of CommonBCCH community with its each near the co-channel interference coefficient of community, owing to there being near a plurality of communities, each BTS can form one group of independently data.
Step S300, the CommonBCCH community different B TS that step S204 is obtained carries out relatedness computation according to community, chooses the degree of correlation lower than 0.7 community.
Step S301, the CommonBCCH community different B TS that step S204 is obtained carries out relatedness computation according to community, according to following formula, calculates:
The co-channel interference coefficient of x:CommonBCCH first frequency range BTS and each peripheral cell
The co-channel interference coefficient of second frequency range BTS of y:CommonBCCH and each peripheral cell
If the degree of correlation is lower than 0.7 in community, illustrate under this community between different frequency range that BTS covers to differ greatly.
Step S302, if there are a plurality of problem cells in base station, has the larger situation that may have reverse connection of antenna in this base station.
Because this method is the metrical information based on mobile terminal reporting, obtain accordingly result, if traffic carrying capacity is larger, more can reflect truth.But because traffic fluctuation and all kinds of parameter are to the optimizing and revising of each BTS, not necessarily can find all problems community comprehensively, but proof in practice, and the problem of discovery is accurately.
As can be seen from the above-described embodiment, above-described embodiment, based on rational theoretical derivation, is analyzed according to the network configuration information of input, mobile terminal metrical information etc., obtains reflecting the co-channel interference degree of correlation between each BTS of CommonBCCH community.Finally can in cordless communication network, be achieved as follows function:
Can set up respectively the co-channel interference coefficient between each BTS of reflection and near community according to the metrical information of existing network CommonBCCH each BTS of community; And then, by the co-channel interference coefficient degree of correlation of each BTS, judge the covering difference of each BTS, whether location there is reverse connection of antenna under the machine station, and so effectively discovering network hidden failure, rationalizes to ensure that community covers, and reaches the object of guarantee network quality.
The above; be only the present invention's embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (5)
1. analyze the method that CommonBCCH covers difference, it is characterized in that, comprising:
Step S100, the relevant information of collection network run duration mobile terminal reporting; In this information, mainly comprise: the level intensity of mobile terminal to reside cell, near the level intensity of community, near the sampling number of community, and near the frequency of the BCCH broadcast channel of community use and the identification code BSIC of community etc.;
Step S200, in conjunction with the longitude and latitude of Wang Nei community and BCCH frequency and the BSIC data of existing network configuration, the information that the BTS of each each frequency range of community is collected, matches concrete community, calculates and can produce the percentage with frequency impact;
Step S300, the same frequency generating for different frequency range BTS affects ratio data, the degree of correlation between different frequency range is calculated respectively in each community, if its degree of correlation of CommonBCCH community lower than 0.7, just may exist the reverse connection of antenna between the excessive or different districts of the covering difference of different frequency range.
2. a kind of method that CommonBCCH covers difference of analyzing according to claim 1, is characterized in that, in described step S100, minute different B TS gathers the measurement report information of mobile terminal:
The frequency that carries out BA table in CommonBCCH community adds successively, until each CommonBCCH community is all measured near all BCCH frequencies;
According to the mobile terminal in CommonBCCH community, submit to the metrical information of network side, obtain the measurement data of each community to the peripheral cell of different B CCH and BSIC.
3. a kind of method that CommonBCCH covers difference of analyzing according to claim 1 and 2, is characterized in that, described step S200 comprises:
According to the metrical information of CommonBCCH community, each BTS carries out associated coupling to every BCCH+BSIC information and existing network configuration information, determines near every corresponding community of metrical information;
According to the metrical information of CommonBCCH community collection, calculate the co-channel interference coefficient of each BTS and near its community.
4. a kind of method that CommonBCCH covers difference of analyzing according to claim 3, is characterized in that, described step S300 comprises:
According to the co-channel interference coefficient calculations of different B TS and near community, go out the degree of correlation between the different B TS in same community.
5. a kind of method that CommonBCCH covers difference of analyzing according to claim 4, is characterized in that, described all communities is comprised by the process of setting rule-based filtering:
The co-channel interference coefficient degree of correlation between different B TS is filtered out lower than 0.7 CommonBCCH community, as problem cells.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086513A (en) * | 2018-01-25 | 2019-08-02 | 中兴通讯股份有限公司 | A kind of method and device checking MIMO base station reverse connection of antenna |
| CN110831018A (en) * | 2019-11-14 | 2020-02-21 | 中国联合网络通信集团有限公司 | Detection method, equipment and storage medium for LTE (Long term evolution) cell antenna feeder system |
| CN111543075A (en) * | 2018-06-26 | 2020-08-14 | 华为技术有限公司 | Frequency band selection method and device |
-
2014
- 2014-01-07 CN CN201410004918.3A patent/CN103763728A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086513A (en) * | 2018-01-25 | 2019-08-02 | 中兴通讯股份有限公司 | A kind of method and device checking MIMO base station reverse connection of antenna |
| CN110086513B (en) * | 2018-01-25 | 2021-07-20 | 中兴通讯股份有限公司 | Method and device for checking reverse connection of MIMO base station antenna |
| CN111543075A (en) * | 2018-06-26 | 2020-08-14 | 华为技术有限公司 | Frequency band selection method and device |
| CN111543075B (en) * | 2018-06-26 | 2021-11-30 | 华为技术有限公司 | Frequency band selection method and device |
| CN110831018A (en) * | 2019-11-14 | 2020-02-21 | 中国联合网络通信集团有限公司 | Detection method, equipment and storage medium for LTE (Long term evolution) cell antenna feeder system |
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