CN102088708B - Method and device for positioning weak coverage area in network - Google Patents
Method and device for positioning weak coverage area in network Download PDFInfo
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Abstract
The invention discloses a method and device for positioning a weak coverage area in a network. The method comprises the following steps of: recording calling information of all users in a wireless network, wherein the calling information at least comprises the pilot frequency of an active set before an user terminal is released, pilot frequency intensity and a call release reason; determining the record of dropped calls caused by poor wireless environment quality in the calling information and determining a cell where the user terminal is positioned before releasing according to the pilot frequency in the active set which corresponds to the record of dropped calls; and performing statistics and analysis on the cell so as to position the weak coverage area in the wireless network. By the technical scheme of the invention, the weak coverage area in the network can be positioned quickly and accurately in a large-scale commercial network, so that an optimization scheme can be implemented in a targeting way, network optimization work is guided, and the aim of efficiently optimizing the network is fulfilled.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and device of positioning weak coverage area in network.
Background technology
3G (3
rdgeneration, 3G (Third Generation) Moblie) network Development is to present stage, and network function is relatively perfect, at the needs that also substantially can meet various application scenarioss not in the know.Along with extensive commercial network with the speed of advancing by leaps and bounds in global dilatation, construction, user group's development, operator is remarkable is satisfied with the requirement to network function, more and more sight is turned to the requirement to network performance.The for example requirement to network system call completing rate, the requirement to ICQ responsiveness, the requirement to speech quality, etc.Network optimization work also more and more becomes the important means of improving network quality.And with regard to present case analysis, the lifting of network performance also needs a relatively very long process.In large-scale commercial network not in the know, the reason that affects network quality is numerous, and the performance degree of different reasons in heterogeneous networks is also different, but in all commercial network, it is all one of major reason affecting network quality, reduction network index that the network performance that weak covering causes declines.Weak overlay area not only affects Internet phone-calling quality, and easily causes call drop, causes the low series of problems that waits of page response rate, causes that user complains in a large number.In large-scale commercial network not in the know, how in existing network, accurately to find out the weak overlay area in network, and then can implement prioritization scheme targetedly, become the key point that affects network optimization work.
The means of weak overlay area, tradition location are mainly to rely on network optimization personnel manual testing in network coverage to analyze, and the drive test that namely we often say, determines the weak overlay area in network.But manual testing's mode is when expending a large amount of manpower and materials, the data that obtain are also difficult to cover the All Ranges in network, and can not reflect the problem that the network degree of depth covers.The for example wireless environment on road surface and the difference of indoor wireless environments, difference of road surface wireless environment and different floor gap wireless environments etc.Visible manual testing's mode, when expending a large amount of manpower and materials, is but difficult to the effect of optimization that reaches desirable.How can find the method for weak overlay area, a kind of effective location, become the key factor of network optimization success or failure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method and device of positioning weak coverage area in network, accurately the weak overlay area in fixer network.
In order to address the above problem, the invention provides a kind of method of positioning weak coverage area in network, the method comprises:
Record the call information of all users in wireless network, in described call information, at least comprise that user terminal discharges the pilot tone of front Active Set, pilot frequency intensity and calls out release cause;
Determine the call drop record causing because wireless environment is of poor quality in described call information, then the pilot tone recording in corresponding Active Set according to described call drop determines that described user terminal discharges the community at front place;
Statistical analysis is carried out in described community, orient the weak overlay area in wireless network.
Further, determine in the following way the call drop record causing because wireless environment is of poor quality in described call information:
According to the calling release cause in described call information, therefrom screen out call drop record;
In conjunction with pilot frequency intensity, determine that the call drop record screening out is to cause because wireless environment is of poor quality.
The process of further, statistical analysis being carried out in described community specifically comprises:
According to the pilot frequency intensity of Active Set small area, sorted in described community;
According to the cell combination after sequence, the number of dropped calls of adding up respectively every kind of combination, and the maximum cell combination Zhong community of number of dropped calls is judged to be to weak overlay area.
The process of further, statistical analysis being carried out in described community specifically comprises:
If the ratio that the number of dropped calls of a certain community accounts in all cell combination exceeds predetermined threshold value, judge the weak overlay area that this community causes as isolated island station.
Further, if there are a plurality of cell combination in described statistics, and it is suitable to be respectively combined in ratio shared in all cell combination, judges the weak overlay area that described a plurality of cell combination causes as pilot pollution.
Further, in described call information, comprise the repeatedly handover information before user terminal discharges, and comprise Active Set pilot tone and pilot frequency intensity in each handover information;
If there is not strong pilot tone in the Active Set before user terminal discharges in last handover information, and in the Active Set in other handover informations beyond described last handover information, there is strong pilot tone, judge the weak overlay area that exists indoor turning or elevator to cause in the Active Set Zhong community in described last handover information.
The present invention also provides a kind of device of positioning weak coverage area in network, and this device comprises: call information logging modle and statistical analysis module, wherein,
Described call information logging modle is used for, record the call information of all users in wireless network and send to described statistical analysis module, wherein, in described call information, at least comprise that user terminal discharges the pilot tone of front Active Set, pilot frequency intensity and calls out release cause;
Described statistical analysis module is used for, and determines the call drop record causing because wireless environment is of poor quality in described call information, then the pilot tone recording in corresponding Active Set according to described call drop determines that described user terminal discharges the community at front place; And statistical analysis is carried out in described community, orient the weak overlay area in wireless network.
Further, described statistical analysis module is used for, and determines in the following way the call drop record causing because wireless environment is of poor quality in described call information:
According to the calling release cause in described call information, therefrom screen out call drop record;
In conjunction with pilot frequency intensity, determine that the call drop record screening out is to cause because wireless environment is of poor quality.
Further, described statistical analysis module is used for, and following statistical analysis is carried out in described community:
According to the pilot frequency intensity of Active Set small area, sorted in described community;
According to the cell combination after sequence, the number of dropped calls of adding up respectively every kind of combination, and the maximum cell combination Zhong community of number of dropped calls is judged to be to weak overlay area.
Further, described statistical analysis module is used for, and following statistical analysis is carried out in described community:
If the ratio that the number of dropped calls of a certain community accounts in all cell combination exceeds predetermined threshold value, judge the weak overlay area that this community causes as isolated island station;
If have a plurality of cell combination in described statistics, and it is suitable to be respectively combined in ratio shared in all cell combination, judge the weak overlay area that described a plurality of cell combination causes as pilot pollution;
If comprise the repeatedly handover information before user terminal discharges in described call information, and there is not strong pilot tone in the Active Set that described user terminal discharges in front last handover information, and in the Active Set in other handover informations beyond described last handover information, there is strong pilot tone, judge the weak overlay area that exists elevator or indoor turning to cause in the Active Set Zhong community in described last handover information.
Compared with prior art, adopt technical solution of the present invention to there is following beneficial effect:
Can in large-scale commercial network, orient fast and accurately the weak overlay area in network, implement targetedly prioritization scheme, instruct network optimization work, thereby reach the object of effectively optimizing network;
Do not need special manual testing, can save network optimization personnel manual testing's cost, improve the efficiency of the network optimization.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of the positioning weak coverage area in network of the embodiment of the present invention;
Fig. 2 is the device schematic diagram of the positioning weak coverage area in network of the embodiment of the present invention.
Embodiment
Core concept of the present invention is: by analyzing the network user's call information, find out the call drop record causing because wireless environment is of poor quality, according to the pilot tone in Active Set before conversation loss in call information, determine the region at the front place of conversation loss, again these are caused the region of conversation loss to carry out statistical analysis because wireless environment is poor, thereby orient the poor weak overlay area of wireless environment.
Based on above-mentioned thought, as shown in Figure 1, in the embodiment of the present invention, adopt following technical scheme:
Step 1, records the call information of all users in wireless network, in this call information, at least comprise terminal discharge before Active Set pilot tone, pilot frequency intensity and call out release cause;
Record comprises that normal talking record and call drop are recorded in interior all-calls information herein, according to calling out release cause, can from call information, screen out call drop record.Alternatively, in this call information, can also be included in last four handover informations of terminal in communication process, in handover information, comprise pilot tone and the pilot frequency intensity of terminal Active Set, Candidate Set.
Step 2, classifies to the wireless network user call information of record, finds out the call drop record causing due to wireless environment poor signal quality (being poor signal quality);
Wherein, according to calling out release cause, in conjunction with pilot frequency intensity, just can determine that whether call drop is due to due to wireless environment poor signal quality again.
Step 3, determines that in the call drop record finding, terminal discharges the pilot tone of front Active Set, then determines that according to the pilot tone of Active Set user calls out the community at the front place of call drop;
Step 4, for determined community, pilot frequency intensity according to terminal call drop Qian Gai community in Active Set carries out statistical analysis, and find the weak overlay area in network according to statistics, and the wireless environment situation in this region, power that the wireless signal ，Ge community of which community transmitting transmits etc. can be received in this region.
The concrete steps of wherein, adding up according to pilot frequency intensity are as follows:
1, to cause each time the record of call drop because wireless environment is poor, according to the pilot frequency intensity sequence of Active Set small area before call drop, contribution calling being maintained according to pilot tone power, before pilot frequency intensity Qiang community is come, after pilot frequency intensity Ruo community comes;
2, according to the cell combination after sequence, the number of dropped calls of adding up every kind of combination, the combination that number of dropped calls is more, the community that this combination relates to is larger on weak covering call drop impact.For example 100 poor records of call drop that cause of wireless environment are added up, (A, B) combination of the call drop of Liang Ge community accounts for 80 times altogether, so just can determine that the borderline region wireless environment of A, two cell coverage areas of B is poor, exists the weak possibility covering very large.
Weak overlay area described herein refers to the general easy terminal call drop in communication process that causes in the poor ，Ruo overlay area, region of wireless environment.It should be noted that weak covering might not be all that the phase mutual interference before each cell signal also easily causes weak covering due to due to signal do not cover.
Above-mentioned statistics is assessed, just can further confirm that weak overlay area is due to the weak covering that weak covering, radio-frequency power that weak covering, pilot pollution that isolated island station causes cause cause, the reasons such as weak covering that indoor turning causes, and provides strong support to optimizing the radio signal quality of weak overlay area.
The call drop record for example 100 times being caused due to wireless environment quality problems is added up, if there is and only has the call drop record of A community to exceed predetermined threshold (for example, over 80 times) in Active Set, can infer that so this region is that isolated island station covers, because having other community, the border of this community do not cover, while causing the border of fast mobile terminal Dao Gai community, because poor signal quality causes call drop.
If the call drop that 100 times are caused due to wireless environment quality problems record is added up, there are a plurality of call drop cell combination in statistics, and each combines shared ratio is not again very large, for example, cell combination (A, B), (B, C) and (A, C) shared ratio suitable (about equally), can infer that so this region is pilot pollution district, this region is covered by a plurality of communities, but the signal of each coverage cell is more weak again in this region, cause terminal in communication process due to signal quality problem call drop.
If the call drop that 100 times are caused due to wireless environment quality problems record is added up, in statistics, before call drop, in Active Set, there is strong pilot tone (even if it is generally acknowledged the strong pilot tone of be greater than-13db of pilot frequency intensity), but Active Set does not have strong pilot tone during call drop, can infer so in this region (cell coverage area while referring to discharge in Active Set) and have elevator or indoor turning.Wherein, owing to having preserved repeatedly handover information in call drop record, each handover information has Active Set pilot tone and pilot frequency intensity, and during described call drop, Active Set refers to the Active Set in last handover information; Active Set before described call drop refers to the Active Set in the handover information before the last handover information of preserving in call drop record.
For a variety of causes, cause the processing mode of weak covering problem also different, the weak covering producing for isolated island station, transmitting power or the consideration that need to improve base station add station; The weak covering causing for pilot pollution, need to adjust the coverage of peripheral base station, guarantees that there is one to two strong pilot tone in this region; For elevator or indoor corner region, for example user is to enter elevator front signal relatively good, enters after elevator due to elevator shielding, and signal quality fast-fading, causes call drop, can consider to increase indoor covering.
As shown in Figure 2, the device of the positioning weak coverage area in network of the embodiment of the present invention comprises: call information logging modle and statistical analysis module, wherein,
Call information logging modle is used for, and records the call information of all users in wireless network and sends to statistical analysis module, wherein, at least comprises that user terminal discharges the pilot tone of front Active Set, pilot frequency intensity and calls out release cause in call information;
Statistical analysis module is used for, and determines the call drop record causing because wireless environment is of poor quality in call information, then the pilot tone recording in corresponding Active Set according to call drop determines that user terminal discharges the community at front place; Statistical analysis is carried out in Bing Dui community, orients the weak overlay area in wireless network.
Further, statistical analysis module is used for, and determines in the following way the call drop record causing because wireless environment is of poor quality in call information:
According to the calling release cause in call information, therefrom screen out call drop record;
In conjunction with pilot frequency intensity, determine that the call drop record screening out is to cause because wireless environment is of poor quality.
Further, statistical analysis module carries out following statistical analysis for ，Dui community:
Pilot frequency intensity according to Active Set small area sorts to community;
According to the cell combination after sequence, the number of dropped calls of adding up respectively every kind of combination, and the maximum cell combination Zhong community of number of dropped calls is judged to be to weak overlay area.
Further, statistical analysis module carries out following statistical analysis for ，Dui community:
If the ratio that the number of dropped calls of a certain community accounts in all cell combination exceeds predetermined threshold value, judge the weak overlay area that this community causes as isolated island station;
If there are a plurality of cell combination in statistics, and it is suitable to be respectively combined in ratio shared in all cell combination, judges the weak overlay area that a plurality of cell combination cause as pilot pollution;
If comprise the repeatedly handover information before user terminal discharges in call information, and there is not strong pilot tone in the Active Set that user terminal discharges in front last handover information, and in the Active Set in other handover informations beyond last handover information, there is strong pilot tone, judge the weak overlay area that exists elevator or indoor turning to cause in the Active Set Zhong community in last handover information.
According to above-mentioned embodiment, can find fast and accurately the weak overlay area in network, instruct network optimization work, improve network optimization quality; Meanwhile, can solve the workload that network optimization personnel manual testing analyzes, reduce the cost of the network optimization.
In sum, the present invention, by analyzing the call log information of user in network, adopts the mode of similar " whole people's drive test ", finds fast and accurately the weak overlay area in network, and take Optimized Measures targetedly, reach the quick and precisely object of optimized network.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.The present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art work as and can be equal to accordingly change or replace according to technical scheme of the present invention and design thereof, but these corresponding changes or replacement all should belong to the protection range of claims of the present invention.
Claims (10)
1. a method for positioning weak coverage area in network, is characterized in that, the method comprises:
Record the call information of all users in wireless network, in described call information, at least comprise that user terminal discharges the pilot tone of front Active Set, pilot frequency intensity and calls out release cause;
Determine the call drop record causing because wireless environment is of poor quality in described call information, then the pilot tone recording in corresponding Active Set according to described call drop determines that described user terminal discharges the community at front place;
Statistical analysis is carried out in described community, orient the weak overlay area in wireless network.
2. the method for claim 1, is characterized in that,
Determine in the following way the call drop record causing because wireless environment is of poor quality in described call information:
According to the calling release cause in described call information, therefrom screen out call drop record;
In conjunction with pilot frequency intensity, determine that the call drop record screening out is to cause because wireless environment is of poor quality.
3. method as claimed in claim 1 or 2, is characterized in that,
The process of described community being carried out to statistical analysis specifically comprises:
According to the pilot frequency intensity of Active Set small area, sorted in described community;
According to the cell combination after sequence, the number of dropped calls of adding up respectively every kind of combination, and the maximum cell combination Zhong community of number of dropped calls is judged to be to weak overlay area.
4. method as claimed in claim 3, is characterized in that,
The process of described community being carried out to statistical analysis specifically comprises:
If the ratio that the number of dropped calls of a certain community accounts in all cell combination exceeds predetermined threshold value, judge the weak overlay area that this community causes as isolated island station.
5. method as claimed in claim 3, is characterized in that,
If have a plurality of cell combination in described statistics, and it is suitable to be respectively combined in ratio shared in all cell combination, judge the weak overlay area that described a plurality of cell combination causes as pilot pollution.
6. method as claimed in claim 3, is characterized in that,
In described call information, comprise the repeatedly handover information before user terminal discharges, and comprise Active Set pilot tone and pilot frequency intensity in each handover information;
If there is not strong pilot tone in the Active Set before user terminal discharges in last handover information, and in the Active Set in other handover informations beyond described last handover information, there is strong pilot tone, judge the weak overlay area that exists indoor turning or elevator to cause in the Active Set Zhong community in described last handover information.
7. a device for positioning weak coverage area in network, is characterized in that, this device comprises: call information logging modle and statistical analysis module, wherein,
Described call information logging modle is used for, record the call information of all users in wireless network and send to described statistical analysis module, wherein, in described call information, at least comprise that user terminal discharges the pilot tone of front Active Set, pilot frequency intensity and calls out release cause;
Described statistical analysis module is used for, and determines the call drop record causing because wireless environment is of poor quality in described call information, then the pilot tone recording in corresponding Active Set according to described call drop determines that described user terminal discharges the community at front place; And statistical analysis is carried out in described community, orient the weak overlay area in wireless network.
8. device as claimed in claim 7, is characterized in that,
Described statistical analysis module is used for, and determines in the following way the call drop record causing because wireless environment is of poor quality in described call information:
According to the calling release cause in described call information, therefrom screen out call drop record;
In conjunction with pilot frequency intensity, determine that the call drop record screening out is to cause because wireless environment is of poor quality.
9. install as claimed in claim 7 or 8, it is characterized in that,
Described statistical analysis module is used for, and following statistical analysis is carried out in described community:
According to the pilot frequency intensity of Active Set small area, sorted in described community;
According to the cell combination after sequence, the number of dropped calls of adding up respectively every kind of combination, and the maximum cell combination Zhong community of number of dropped calls is judged to be to weak overlay area.
10. device as claimed in claim 9, is characterized in that,
Described statistical analysis module is used for, and following statistical analysis is carried out in described community:
If the ratio that the number of dropped calls of a certain community accounts in all cell combination exceeds predetermined threshold value, judge the weak overlay area that this community causes as isolated island station;
If have a plurality of cell combination in described statistics, and it is suitable to be respectively combined in ratio shared in all cell combination, judge the weak overlay area that described a plurality of cell combination causes as pilot pollution;
If comprise the repeatedly handover information before user terminal discharges in described call information, and there is not strong pilot tone in the Active Set that described user terminal discharges in front last handover information, and in the Active Set in other handover informations beyond described last handover information, there is strong pilot tone, judge the weak overlay area that exists elevator or indoor turning to cause in the Active Set Zhong community in described last handover information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910252057.XA CN102088708B (en) | 2009-12-04 | 2009-12-04 | Method and device for positioning weak coverage area in network |
| PCT/CN2010/074334 WO2011066745A1 (en) | 2009-12-04 | 2010-06-23 | Method and device for locating weak coverage areas in network |
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| CN200910252057.XA CN102088708B (en) | 2009-12-04 | 2009-12-04 | Method and device for positioning weak coverage area in network |
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| CN102711153B (en) * | 2012-05-18 | 2014-11-19 | 中国联合网络通信集团有限公司 | Method and device for optimizing speech business |
| US8768337B2 (en) * | 2012-10-26 | 2014-07-01 | International Business Machines Corporation | Base station power control in a mobile network |
| CN103874194B (en) * | 2012-12-14 | 2018-03-20 | 中国电信股份有限公司 | Auxiliary triangle localization method and device based on customer behavior modeling |
| CN103581976B (en) * | 2013-08-30 | 2015-12-02 | 华为技术有限公司 | The recognition methods of community and device |
| CN105323846B (en) * | 2014-08-04 | 2018-10-23 | 中国移动通信集团广东有限公司 | A kind of method and apparatus of the weak covering repeater of positioning |
| CN108235345B (en) * | 2016-12-22 | 2021-06-08 | 上海诺基亚贝尔股份有限公司 | Method and device for determining low-quality area in cell |
| CN108243434B (en) * | 2016-12-23 | 2021-09-21 | 中国移动通信集团广东有限公司 | Method and device for positioning dropped call position |
| CN106878999A (en) * | 2017-03-20 | 2017-06-20 | 中国联合网络通信集团有限公司 | A kind of method and device for determining weak overlay area |
| CN107172607B (en) * | 2017-04-25 | 2020-01-31 | 中国联合网络通信集团有限公司 | Blind area detection method and device |
| CN110012418A (en) * | 2017-12-31 | 2019-07-12 | 中国移动通信集团湖北有限公司 | Recognition methods, device, equipment and the medium of wireless network covering problem |
| CN113133019B (en) * | 2019-12-30 | 2022-10-18 | 中国移动通信集团四川有限公司 | Method for outputting network optimization scheme |
| CN111836298B (en) * | 2020-07-10 | 2023-02-28 | 中国联合网络通信集团有限公司 | Low-rate cell detection method and server |
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