CN102164380A - Method for assessment of mobile communication network frequency use condition - Google Patents
Method for assessment of mobile communication network frequency use condition Download PDFInfo
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- CN102164380A CN102164380A CN201110072400XA CN201110072400A CN102164380A CN 102164380 A CN102164380 A CN 102164380A CN 201110072400X A CN201110072400X A CN 201110072400XA CN 201110072400 A CN201110072400 A CN 201110072400A CN 102164380 A CN102164380 A CN 102164380A
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Abstract
The invention relates to the technical field of mobile communication, and in particular relates to a method for assessment of the mobile communication network frequency use condition. Through setting an MR test voice quality index, a strong signal quality difference cell ratio, a frequency point use balance degree, an identical and adjacent frequency switching ratio, a cell interference factor (Ericsson), an engineering network entry amount and other index threshold values, the method can judge whether a network achieves the frequency conversion condition, so as to more reasonably perform frequency optimization on the network, reduce the interference in the network, and improve the network quality.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to a kind of appraisal procedure of mobile communications network frequency operating position.
Background technology
Along with the continuous increase of mobile communication subscriber quantity, the continuous expansion of network, the situation of channeling is more and more.Channeling is exactly to make same frequency cover different zones (zone that the part of a base station or this base station (fan anteena) is covered), these use the zone of same frequency to need at intervals (being called with the frequency multiplex distance) each other, to satisfy co-channel interference are suppressed in the index of permission.
Because the mobile communication frequency resource becomes more and more nervous at present, disturb also serious all the more in the net that channeling brings, as neighbor cell allocation identical carrier frequency, the user just may be subjected to the interference of neighbor cell on same carrier frequency therein in sub-district during conversation, cause incoming level better, but the situation that the quality of reception is relatively poor, even cause call drop.In addition, the sub-district frequency-selecting situation of difficult that newly networks also can appear.So just need plan again the whole network frequency.
Regularly, reduce in the net and disturb, improve network quality the rational frequency of utilization of network frequency conversion.So, how to utilize existing frequency resource fully, more reasonably carrying out frequency optimization is the very big problem that present network optimization work faces.At present, also do not have a kind of good GSM network frequency conversion performance evaluation method, be used to assess the demand that whether has frequency conversion in the regulation zone at moving communicating field.
Summary of the invention
The objective of the invention is to actual demand, provide a kind of appraisal procedure of mobile communications network frequency operating position, thereby whether the standard communication network reaches the Rule of judgment of frequency conversion requirement at present network assessment.
Technical scheme of the present invention is as follows: a kind of appraisal procedure of mobile communications network frequency operating position comprises:
According to the statistical indicator of measurement result record in the assessment area, calculate the uplink and downlink average signal quality respectively;
According to the statistical indicator of measurement result record in the assessment area, calculate descending matter difference traffic ratio and descending weak signal traffic ratio respectively, determine strong signal matter difference sub-district accounting;
Each frequency access times in the statistical estimation zone, and ask for its mean square deviation, obtain the frequency equilibrium degree;
Go out the same switching times accounting frequently in sub-district in the assessment area according to the traffic measurement data computation;
Disturbed overall coefficient surpasses 0.8 sub-district ratio in the statistical estimation zone;
The carrier frequency increment of statistics existing network carrier frequency number during than the last time frequency conversion;
To above every calculating or the target setting minimum threshold that counts, these indexs are worsened quantity in minimum threshold as Rule of judgment, determine whether and need carry out frequency conversion assessment area.
Further, the appraisal procedure of aforesaid mobile communications network frequency operating position, wherein, the formula that calculates the uplink and downlink average signal quality is:
Wherein, Rxqual (0,1,2,3) expression signal quality is 0,1,2,3 measurement point quantity sum, and Rxqual (4,5,6,7) expression signal quality is 4,5,6,7 measurement point quantity sum.
Further, the appraisal procedure of aforesaid mobile communications network frequency operating position, wherein, the formula that calculates descending matter difference traffic ratio is:
The formula that calculates descending weak signal traffic ratio is:
Get and satisfy descending weak signal traffic ratio＜5%, and the sub-district number of descending matter difference traffic ratio＞10% accounts in the regulation network sub-district and count ratio, be strong signal matter difference sub-district accounting.
Further, the appraisal procedure of aforesaid mobile communications network frequency operating position, wherein, the formula that calculates with frequency switching times accounting is:
Further, the appraisal procedure of aforesaid mobile communications network frequency operating position, wherein, the disturbed overall coefficient of main plot is that it is by all adjacent area interference coefficient sums, the main plot is become by the frequency array of the coefficient of an adjacent area interference by C/I interference factor, C/A interference factor and main plot, and formula is as follows:
Further, the appraisal procedure of aforesaid mobile communications network frequency operating position, wherein, the minimum threshold of up average signal quality is set at 97.5%～98.5%, the minimum threshold of descending average signal quality is set at 97.0%～99.0%, the minimum threshold of strong signal matter difference sub-district accounting is set at 1.5%～5.0%, the minimum threshold of frequency equilibrium degree is set at 15～25, minimum threshold with frequency switching times accounting is set at 3%～8%, the minimum threshold that disturbed overall coefficient surpasses 0.8 sub-district ratio is set at 5%～15%, and the minimum threshold of the carrier frequency increment of existing network carrier frequency number during than the last time frequency conversion is set at 20%～30%.
Beneficial effect of the present invention is as follows: the appraisal procedure of mobile communications network frequency operating position of the present invention provides a kind of frequency conversion performance evaluation standard for the planning of mobile communications network, be used to judge whether network has the frequency conversion demand, can more reasonably carry out frequency optimization to network, reduce in the net and disturb, improve network quality.
Description of drawings
Fig. 1 is the appraisal procedure flow chart of mobile communications network frequency operating position provided by the present invention.
Embodiment
Describe the present invention below in conjunction with embodiment and accompanying drawing.
The present invention uses equilibrium degree, frequently switches index threshold values such as accounting, area interference coefficient (Ericsson), engineering networking amount and judge whether network reaches the frequency conversion condition with adjacent by setting MR (measurement report) test speech quality index, strong signal matter difference sub-district accounting, frequency.
As shown in Figure 1, appraisal procedure of the present invention comprises:
1. calculate the uplink and downlink average signal quality
According to the statistical indicator of MRR in the assessment area (measurement result record), calculate the uplink and downlink average signal quality respectively.
The computing formula of uplink and downlink average signal quality is identical, all adopts following formula:
Wherein, Rxqual (0,1,2,3) expression signal quality is 0,1,2,3 measurement point quantity sum, and Rxqual (4,5,6,7) expression signal quality is 4,5,6,7 measurement point quantity sum.
The downlink quality statistics can reflect to a certain extent that cell frequency is subjected to disturbed condition; Quality of uplink signal then can help to find uplink interference.
2. calculate strong signal matter difference sub-district accounting
In MRR (measurement result record) statistics, what get its signal quality Rxqual＞4 is matter difference traffic sample, calculates descending matter difference traffic ratio and is:
Get its signal strength signal intensity Rxlevel＜-94dbm for weak signal traffic sample, calculate descending weak signal traffic ratio and be:
Get and satisfy descending weak signal traffic ratio＜5%, and the sub-district number of descending matter difference traffic ratio＞10% accounts in the regulation network sub-district and count ratio, be strong signal matter difference sub-district accounting.Disturb big more in the high more explanation net of this ratio.
3. calculate frequency and use equilibrium degree
Each frequency access times in the statistical estimation zone, and ask for its mean square deviation, obtain the frequency equilibrium degree.This account form is a prior art, and those skilled in the art can realize fully.
4. calculation plot is with adjacent switching times accounting frequently
Go out in the assessment area sub-district with switching times accounting and adjacent switching times accounting frequently frequently according to the traffic measurement data computation.
The formula that calculates with frequency switching times accounting is:
Calculating the adjacent formula of switching times accounting frequently is:
Generally speaking, only will be with the switching times accounting is as evaluation index frequently, adjacent switching times accounting value only for referencial use frequently determines whether to consider the adjacent accounting of frequently switching according to actual conditions.
5. calculate disturbed overall coefficient and surpass 0.8 sub-district ratio
The assessment of area interference coefficient is based on a kind of appraisal procedure of the NCS of Ericsson (adjacent area support) function.The adjacent area supports that NCS (Neighbouring Cell Support) is exactly the data of compiling after the cell localization computing.In communication process, because move around the user mobile phone must be switched between the sub-district, the operation method that decision is switched is a location algorithm.NCS is exactly some data that are recorded in the calculating process of location, these data are base unit with BCCH/BSIC, mainly comprise: the measurement report number in carrying out the NCS measuring process, become six number of times of strong sub-district and corresponding signal strength signal intensity, average signal strength etc.The signal strength signal intensity that NCS utilizes user's mobile phone to remove to measure the measurement frequency of definition, and the measurement frequency of definition can be the frequency of non-neighbor cell, can help the user to go to be the adjacent sub-district of each the little area definition in the network based on accurate measurement report like this.
NCS (Neighbouring Cell Support) can collect mobile phone and report in the BSC measurement report six signal strength informations of strong adjacent area, and these information can be used to calculate the signal annoyance level between the neighbor cell.Instruction definition NCS follows C/I＜9, C/A＜-9, and absolute signal intensity is not less than-requirement of 94dBm, i.e. relative parameters setting RELSSN=9, RELSS2P=9, ABSS=94.The NCS data collection, MRR data collection and Frequency Design data will be collected at one time, usually in same week.Then disturbed coefficient is: the C/I co-channel interference factor of main plot, the adjacent computing formula of interference factor frequently of C/A are:
Above-mentioned formula is the computational methods of a kind of acquiescence of this area, is widely used when utilizing the NCS of Ericsson (adjacent area support) function to carry out the assessment of area interference coefficient.
In the above-mentioned formula: the adjacent area of paying special attention in above-mentioned refers to the actual BCCH frequency point cell that can measure, and contains DEF (being defined as the adjacent area) and UNDEF (not being defined as the adjacent area) two parts.RepArfcn is the measurement report sum of adjacent area; Derive from the statistics of above-mentioned NCS.The relative signal intensity counter of TimesRelSS and TimesRelSS2 difference corresponding C/I (co-channel interference carrier/interface ratio) and C/A (the adjacent carrier/interface ratio of frequently disturbing); Derive from the statistics of above-mentioned NCS.With count again and again, the neighbour counts again and again, the total frequency number in adjacent area derives from CDD (Cellll Design Data sub-district definition of data) medium frequency data; The time of CDD will be consistent with the time that NCS measures.
The disturbed overall coefficient of main plot be its by all adjacent area interference coefficient sums, the coefficient that the main plot is disturbed by adjacent area is become by the frequency array of C/I interference factor, C/A interference factor and main plot, formula is as follows:
The disturbed overall coefficient in the main plot=disturbed coefficient in ∑ main plot.
With a, b, c, d, five sub-districts of e is example, as a during as the main plot, calculate its adjacent sub-district b, c, d, the C/I interference factor of e, C/A interference factor respectively, and the main plot is by the interference coefficient of four adjacent areas, the interference coefficient summation obtains the disturbed overall coefficient of main plot a the most at last.As b during as the main plot, calculate its adjacent sub-district a, c, d, the C/I interference factor of e, C/A interference factor respectively, and the main plot is by the interference coefficient of four adjacent areas, the interference coefficient summation obtains the disturbed overall coefficient of main plot b the most at last.By that analogy, draw the interference factor between all main plots and the adjacent sub-district, disturbed coefficient etc.
6. the carrier frequency increment when statistics existing network carrier frequency number is than the last time frequency conversion
The carrier frequency increment has promptly showed engineering networking amount, and statistical is a prior art, and those skilled in the art can realize fully.
To above every calculating or the target setting minimum threshold that counts, these indexs are worsened quantity in minimum threshold as Rule of judgment, determine whether and need carry out frequency conversion assessment area.Concrete condition such as the following table of setting every index minimum threshold are listed:
In the specific embodiment of last table, the invention provides two assessment area: the whole network, city.Each assessment area at each scene target setting two minimum thresholds, be respectively thresholding 1 and thresholding 2.The Rule of judgment that present embodiment is set is: satisfy each scene index and worsen in thresholding 1 quantity above 4 (comprising 4); Perhaps each scene index worsens in thresholding 2 quantity and surpasses 3 (comprising 3), then needs frequency conversion is carried out in the zone.Above-mentioned Rule of judgment can be in heterogeneous networks situation, different regions or zone, according to actual conditions the threshold value set and index is worsened in the quantity of thresholding and rationally adjusts.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technology thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. the appraisal procedure of a mobile communications network frequency operating position comprises:
According to the statistical indicator of measurement result record in the assessment area, calculate the uplink and downlink average signal quality respectively;
According to the statistical indicator of measurement result record in the assessment area, calculate descending matter difference traffic ratio and descending weak signal traffic ratio respectively, determine strong signal matter difference sub-district accounting;
Each frequency access times in the statistical estimation zone, and ask for its mean square deviation, obtain the frequency equilibrium degree;
Go out the same switching times accounting frequently in sub-district in the assessment area according to the traffic measurement data computation;
Disturbed overall coefficient surpasses 0.8 sub-district ratio in the statistical estimation zone;
The carrier frequency increment of statistics existing network carrier frequency number during than the last time frequency conversion;
To above every calculating or the target setting minimum threshold that counts, these indexs are worsened quantity in minimum threshold as Rule of judgment, determine whether and need carry out frequency conversion assessment area.
2. the appraisal procedure of mobile communications network frequency operating position as claimed in claim 1 is characterized in that: the formula that calculates the uplink and downlink average signal quality is:
Wherein, Rxqual (0,1,2,3) expression signal quality is 0,1,2,3 measurement point quantity sum, and Rxqual (4,5,6,7) expression signal quality is 4,5,6,7 measurement point quantity sum.
3. the appraisal procedure of mobile communications network frequency operating position as claimed in claim 1 is characterized in that: the formula that calculates descending matter difference traffic ratio is:
The formula that calculates descending weak signal traffic ratio is:
Get and satisfy descending weak signal traffic ratio＜5%, and the sub-district number of descending matter difference traffic ratio＞10% accounts in the regulation network sub-district and count ratio, be strong signal matter difference sub-district accounting.
4. the appraisal procedure of mobile communications network frequency operating position as claimed in claim 1 is characterized in that: the formula that calculates with frequency switching times accounting is:
5. the appraisal procedure of mobile communications network frequency operating position as claimed in claim 1, it is characterized in that: the disturbed overall coefficient of main plot is that it is by all adjacent area interference coefficient sums, the main plot is become by the frequency array of the coefficient of an adjacent area interference by C/I interference factor, C/A interference factor and main plot, and formula is as follows:
6. the appraisal procedure of mobile communications network frequency operating position as claimed in claim 1, it is characterized in that: the minimum threshold of up average signal quality is set at 97.5%～98.5%, the minimum threshold of descending average signal quality is set at 97.0%～99.0%, the minimum threshold of strong signal matter difference sub-district accounting is set at 1.5%～5.0%, the minimum threshold of frequency equilibrium degree is set at 15～25, minimum threshold with frequency switching times accounting is set at 3%～8%, the minimum threshold that disturbed overall coefficient surpasses 0.8 sub-district ratio is set at 5%～15%, and the minimum threshold of the carrier frequency increment of existing network carrier frequency number during than the last time frequency conversion is set at 20%～30%.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102781013A (en) * | 2012-07-12 | 2012-11-14 | 北京拓明科技有限公司 | Interfering cell model real-time adjusting method based on traffic statistics |
| CN105101263A (en) * | 2015-06-26 | 2015-11-25 | 中国联合网络通信集团有限公司 | Method and device for determining performance parameters of antenna feed system |
| CN105592481A (en) * | 2014-10-23 | 2016-05-18 | 中国移动通信集团上海有限公司 | Method and device for determining interference coefficient of frequency point |
| CN109495913A (en) * | 2018-12-29 | 2019-03-19 | 中国联合网络通信集团有限公司 | Interference estimation method and device |
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2011
- 2011-03-24 CN CN201110072400XA patent/CN102164380A/en active Pending
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| 中国移动通信集团广东有限公司: "《广东移动网络优化技术规范》", 10 June 2008 * |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102781013A (en) * | 2012-07-12 | 2012-11-14 | 北京拓明科技有限公司 | Interfering cell model real-time adjusting method based on traffic statistics |
| CN102781013B (en) * | 2012-07-12 | 2014-12-17 | 北京拓明科技有限公司 | Interfering cell model real-time adjusting method based on traffic statistics |
| CN105592481A (en) * | 2014-10-23 | 2016-05-18 | 中国移动通信集团上海有限公司 | Method and device for determining interference coefficient of frequency point |
| CN105592481B (en) * | 2014-10-23 | 2019-01-18 | 中国移动通信集团上海有限公司 | A kind of method and device of the interference coefficient of determining frequency point |
| CN105101263A (en) * | 2015-06-26 | 2015-11-25 | 中国联合网络通信集团有限公司 | Method and device for determining performance parameters of antenna feed system |
| CN105101263B (en) * | 2015-06-26 | 2019-05-14 | 中国联合网络通信集团有限公司 | A kind of method and device of the performance parameter of determining antenna-feeder system |
| CN109495913A (en) * | 2018-12-29 | 2019-03-19 | 中国联合网络通信集团有限公司 | Interference estimation method and device |
| CN109495913B (en) * | 2018-12-29 | 2022-02-15 | 中国联合网络通信集团有限公司 | Interference evaluation method and device |
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Application publication date: 20110824 |