CN103096339A - Method based on mobile phone measured data to confirm cell coverage area - Google Patents
Method based on mobile phone measured data to confirm cell coverage area Download PDFInfo
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- CN103096339A CN103096339A CN2012104420027A CN201210442002A CN103096339A CN 103096339 A CN103096339 A CN 103096339A CN 2012104420027 A CN2012104420027 A CN 2012104420027A CN 201210442002 A CN201210442002 A CN 201210442002A CN 103096339 A CN103096339 A CN 103096339A
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Abstract
The invention discloses a method based on mobile phone measured data to confirm a cell coverage area. The method based on the mobile phone measured data to confirm the cell coverage area comprises the steps of receiving the measured data which are uploaded by a mobile phone and comprise target cell identification, target cell downlink levels, peripheral neighbor cell identification, peripheral neighbor cell downlink levels and a carrier-to-interference ratio list of a target cell and a peripheral neighbor cell and storing the measured data in a data base, dividing downlink level intervals of the target cell according to the received measured data to obtain a downlink level distribution diagram of the target cell, carrying out statistical classification to carrier-to-interference ratio of the target cell and the peripheral neighbor cell to obtain an interference intensity classification diagram of the peripheral neighbor cell, and adding interference intensity classification information of the peripheral neighbor cell to the downlink level distribution diagram of the target cell to obtain a coverage area diagram of the target cell. Through application of the above method, coverage ranges of all target cells are confirmed, whether shift of the coverage cells of the target cells occurs or not can be found timely, and therefore stability of the communication system is maintained.
Description
Technical field
The present invention relates to the residential quarter soverlay technique in mobile communication, be specifically related to a kind of method of determining cell coverage area based on the mobile phone measured data.
Background technology
Recent two decades comes, and the land wireless mobile communications has been obtained swift and violent development.Communicate by letter between cellphone subscriber and base station is that mode with Electromagnetic Wave Propagation is carried out informational linkage.In order to guarantee that the user can communicate with mobile phone anywhere, must guarantee that the field intensity of the every bit between cellphone subscriber and base station is all greater than a lower limit.
Therefore, the how to confirm cell coverage area is most important for the network optimization, tradition is determined the mode of cell coverage area: the one, and utilize field test instrument to obtain the residential quarter field strength distribution by the drive test mode, the data that gather when measuring field intensity in the drive test mode are wire, namely record field intensity along road, but due to factors such as ground, landform and costs, driver test system can not obtain the field intensity data of every bit in the residential quarter, on the contrary, can only obtain the part centrifugal pump; The 2nd, by the field intensity of field intensity prediction algorithm by the difficult survey of the field intensity prediction of known region zone.the mode of field intensity prediction not only requires propagation model to meet the current network situation, and owing to needing detailed geodata in forecasting process, comprise landform, landforms, building position etc., also need concrete landform tendency information, depth of building information etc., the material information of each obstacle even, particularly because the actual geographic environment is all changing all the time, therefore be difficult to obtain very realistic predicting the outcome, and the mode of field intensity prediction also needs a large amount of measured datas is analyzed, fit, statistics, therefore, the data volume that the mode of field intensity prediction needs is large, amount of calculation is large, need supporting geodata, effectual time is little.
In summary, because the method for definite cell coverage area of the prior art has shortcoming as above, how therefore a kind of method of better determining cell coverage area proposed, whether the coverage with timely discovery Target cell is offset, and is the technical problem of needing solution in this area badly.
Summary of the invention
The object of the present invention is to provide a kind of method of determining cell coverage area in mobile communications network based on the mobile phone measured data, therefore can determine in real time the coverage of each Target cell, whether the coverage of in time finding Target cell is offset, thereby keeps the stability of communication system.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of method of determining cell coverage area based on the mobile phone measured data, described method comprises:
The measured data that steps A, reception mobile phone are uploaded also is stored in database, and described measured data comprises at least: the carrier/interface ratio list of Target Cell Identifier, the descending level of Target cell, peripheral adjacent cell sign, the descending level of peripheral adjacent cell, Target cell and peripheral adjacent cell;
Step B, according to the measured data that receives, it is interval that according to target the regularity of distribution of cell downlink level is divided the descending level of Target cell, obtains the Target cell downlink electrical and divide Butut equally;
Step C, the carrier/interface ratio of Target cell and peripheral adjacent cell is carried out statistical classification, obtain peripheral adjacent cell interference strength classification chart;
Step D, on GIS-Geographic Information System GIS platform, peripheral adjacent cell interference strength classified information is joined the Target cell downlink electrical divides equally in Butut, obtain the coverage area diagram of Target cell.
Described step B is specially:
Step B1, statistics gatherer arrive the number of times of the descending level of each Target cell;
Step B2, calculate the probability that the descending level of each Target cell is sampled;
Step B3, the downlink electrical of the descending level of Target cell being carried out interval division and obtaining Target cell are divided Butut equally.
Described step C is specially:
Step C1, the carrier/interface ratio of Target cell and peripheral adjacent cell is got interference strength as peripheral adjacent cell reciprocal, and be divided into three interference strength intervals (∞ ,-12DB), (12DB, 0DB) and (0DB, ∞);
Step C2, calculate respectively the interference strength average of Three regions;
Step C3, calculate respectively the average of each peripheral adjacent cell interference strength in Three regions, and compare with the interference strength average of Three regions respectively, obtain peripheral adjacent cell interference strength classification chart.
The range of receiving of the descending level of described Target cell is-47DB is to-110DB.
The descending level interval of described division Target cell comprises: the interval A of level for-47DB to-59DB, the level interval B is-59DB is to-75DB, the interval C of level be-75DB is to-87DB, the interval D of level be-87DB to-102DB and the interval E of level be-102DB arrives-110DB.
Described method is applicable in global system for mobile communications GSM network.
As seen from the above technical solutions, the present invention is based on the mobile phone measured data, utilize the descending level distribution of Target cell and the interference strength of peripheral adjacent cell, can determine in real time the coverage of each Target cell, whether the coverage of in time finding Target cell is offset, thereby keeps the stability of communication system.
Description of drawings
Fig. 1 determines the flow chart of cell coverage area method described in the present invention;
Fig. 2 is the flow chart that in one embodiment of the invention, the descending level of Target cell is carried out statistical classification and obtain the descending level distribution of Target cell;
Fig. 3 is the descending level distribution schematic diagram of Target cell in one embodiment of the invention;
Fig. 4 is the flow chart that in one embodiment of the invention, statistical classification is carried out in the carrier/interface ratio list of Target cell and peripheral adjacent cell and obtain peripheral adjacent cell classification chart.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Main thought of the present invention is: the measured data that the reception mobile phone is uploaded also is stored in OMC operation and maintenance centre (OMC) database, according to the measured data that receives, according to target the regularity of distribution of cell downlink level is carried out statistical classification to the descending level of Target cell, obtain the Target cell downlink electrical and divide Butut equally, according to the carrier/interface ratio list of Target cell in measured data and peripheral adjacent cell, the peripheral adjacent cell of Target cell is classified simultaneously, obtain at last the coverage area diagram of Target cell on GIS-Geographic Information System (GIS) platform.
The present invention is suitable in the mobile radio system of various land, and the below will describe as an example of global system for mobile communications (GSM) network example.
Fig. 1 determines the flow chart of cell coverage area method described in the present invention.As shown in Figure 1, the method for the invention mainly comprises the following steps:
The measured data that step 101, reception mobile phone are uploaded also is stored in database.
Described measured data comprises: the carrier/interface ratio list of Target Cell Identifier, the descending level of Target cell, peripheral adjacent cell sign, the descending level of peripheral adjacent cell, Target cell and peripheral adjacent cell, wherein carrier/interface ratio is the descending level of Target cell that receives of sample point and the ratio of the descending level of peripheral adjacent cell.
Referring to Fig. 2, Fig. 2 carries out statistical classification for the descending level to Target cell and obtains the flow chart of the descending level distribution of Target cell, mainly comprises the following steps:
For example, in the GSM network, the scope of descending level is from the close-by examples to those far off-47DB～-110DB;
For example, can with-47DB～-level value of 110DB is mapped as virtual level value 0～63, take level value as transverse axis, take probability as the longitudinal axis, and with the rolling average algorithm, each sampled point is carried out level and smooth line and obtains a curve chart.
For example, can be take the trough of this curve as waypoint, curve is divided into level interval such as 5 of A:0 ~ 12, B:12 ~ 28, C:28 ~ 40, D:40 ~ 55 and E:55 ~ 63 etc., make the probability distribution in each section level interval be approximately normal distribution, be converted into the actual level value, the interval A of level is-47DB ~ 59DB, the level interval B is-59DB ~-75DB, the interval C of level is-75DB ~-87DB, the interval D of level be-87DB ~-102DB and the interval E of level be-102DB ~-110DB, can obtain thus the descending level distribution schematic diagram of Target cell as shown in Figure 3.
In the present invention, we use the inverse of carrier/interface ratio to represent the interference strength of peripheral adjacent cell.
Referring to Fig. 4, Fig. 4 is the flow chart that in the present invention, statistical classification is carried out in the carrier/interface ratio list of Target cell and peripheral adjacent cell and obtain peripheral adjacent cell interference strength classification chart, specifically comprises the following steps:
The regulation carrier/interface ratio is 9DB inside the GSM standard, generally add 3DB on engineering, namely require carrier/interface ratio greater than 12DB, in the present invention, at this moment the inverse that requires carrier/interface ratio is weak jamming less than-12DB, and greater than the descending level of the 0DB peripheral adjacent cell of explanation higher than the descending level of Target cell, for strong jamming, be critical jamming between-12DB and 0DB.Represent respectively this Three regions with CLASS1, CLASS2, CLASS3.
Specifically, can calculate respectively the average of the interference strength of each peripheral adjacent cell in three interference strength intervals, and compare with average AVG1, AVG2, the AVG3 in three interference strength intervals respectively, than interval separately interference strength average large be designated as large, than interval separately interference strength average little be designated as littlely, obtain eight kinds of compound modes, accordingly peripheral adjacent cell is divided into eight classes, generate peripheral adjacent cell interference strength classification chart, specifically as shown in table 1
Table 1
As can be seen from Table 1, the strong jamming interval mark is that the descending level of large expression periphery adjacent cell will be higher than the level of Target cell, so will pay close attention to, namely the 1st, 3,5,7 classes should be paid close attention to; The critical jamming interval mark is large will paying close attention to, and namely the 2nd, 6 classes should be paid close attention to; Remaining need not to pay close attention to, and namely the 4th, 8 classes need not to pay close attention to.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement are within all should being encompassed in protection scope of the present invention.
Claims (6)
1. a method of determining cell coverage area based on the mobile phone measured data, is characterized in that, described method comprises:
The measured data that steps A, reception mobile phone are uploaded also is stored in database, and described measured data comprises at least: the carrier/interface ratio list of Target Cell Identifier, the descending level of Target cell, peripheral adjacent cell sign, the descending level of peripheral adjacent cell, Target cell and peripheral adjacent cell;
Step B, according to the measured data that receives, it is interval that according to target the regularity of distribution of cell downlink level is divided the descending level of Target cell, obtains the Target cell downlink electrical and divide Butut equally;
Step C, the carrier/interface ratio of Target cell and peripheral adjacent cell is carried out statistical classification, obtain peripheral adjacent cell interference strength classification chart;
Step D, on GIS-Geographic Information System GIS platform, peripheral adjacent cell interference strength classified information is joined the Target cell downlink electrical divides equally in Butut, obtain the coverage area diagram of Target cell.
2. method according to claim 1, is characterized in that, described step B is specially:
Step B1, according to the measured data that receives, the number of times of the descending level of each Target cell that receives in the measured data uploaded of mobile phone in statistics a period of time;
Step B2, calculate the probability that the descending level of each Target cell is sampled;
Step B3, the downlink electrical of the descending level of Target cell being carried out interval division and obtaining Target cell are divided Butut equally.
3. method according to claim 1, is characterized in that, described step C is specially:
Step C1, the carrier/interface ratio of Target cell and peripheral adjacent cell is got interference strength as peripheral adjacent cell reciprocal, and be divided into three interference strength intervals (∞ ,-12DB), (12DB, 0DB) and (0DB, ∞);
Step C2, calculate respectively the interference strength average of Three regions;
Step C3, calculate respectively the average of each peripheral adjacent cell interference strength in Three regions, and compare with the interference strength average of Three regions respectively, obtain peripheral adjacent cell interference strength classification chart.
4. according to claim 1-3 described methods of any one, is characterized in that, and the range of receiving of the descending level of described Target cell is-and 47DB is to-110DB.
5. method according to claim 4, it is characterized in that, the descending level interval of described division Target cell comprises: the interval A of level for-47DB to-59DB, the level interval B is-59DB is to-75DB, the interval C of level be-75DB is to-87DB, the interval D of level be-87DB to-102DB and the interval E of level be-102DB arrives-110DB.
6. according to claim 1-3 described methods of any one, is characterized in that, described method is applicable in global system for mobile communications GSM network.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299867A (en) * | 2007-12-27 | 2008-11-05 | 华为技术有限公司 | Method, apparatus and system for detecting network cover |
| CN101621808A (en) * | 2009-07-27 | 2010-01-06 | 北京格林耐特通信技术有限责任公司 | Method and device for confirming cell coverage area |
| US20110256833A1 (en) * | 2010-04-19 | 2011-10-20 | Telefonaktiebolaget Lm Ericsson | Interference-free neighbor cell measurements |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299867A (en) * | 2007-12-27 | 2008-11-05 | 华为技术有限公司 | Method, apparatus and system for detecting network cover |
| CN101621808A (en) * | 2009-07-27 | 2010-01-06 | 北京格林耐特通信技术有限责任公司 | Method and device for confirming cell coverage area |
| US20110256833A1 (en) * | 2010-04-19 | 2011-10-20 | Telefonaktiebolaget Lm Ericsson | Interference-free neighbor cell measurements |
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Application publication date: 20130508 |