CN101951627B - Assessment method and system for frequency restriction - Google Patents
Assessment method and system for frequency restriction Download PDFInfo
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- CN101951627B CN101951627B CN 201010241406 CN201010241406A CN101951627B CN 101951627 B CN101951627 B CN 101951627B CN 201010241406 CN201010241406 CN 201010241406 CN 201010241406 A CN201010241406 A CN 201010241406A CN 101951627 B CN101951627 B CN 101951627B
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Abstract
The invention discloses an assessment method for frequency restriction, at least comprising the following steps: collecting the sweep frequency data of a plurality of serving cells; judging the possible main serving cell of each test point according to the sweep frequency data; according to the possible main serving cell of each test point, obtaining overlapped coverage models between cells; converting the overlapped coverage models into an overlapped coverage logical relation graph between cells by logical relations; according to the overlapped coverage logical relation between cells and the carrier configuration of each cell, calculating a frequency restriction factor; and judging whether interference exists or not according to the frequency restriction factor. Correspondingly, the invention also provides an assessment system for frequency restriction. Thus, the invention can accurately position areas with a problem of frequency interference, and guides a reasonable and effective network coverage structure optimum scheme by disclosing the overlapped coverage relation between cells so as to fundamentally improve network quality, thus obtaining the effect that network resource use ratio is maximized.
Description
Technical field
The present invention relates to the mobile communication technology field, relate in particular to a kind of appraisal procedure and system of frequency limited.
Background technology
At present, mobile communication network optimization has obtained using widely in mobile communication engineering, the network optimization is by the network that has now moved being carried out means such as traffic data analysis, field test data collection, parameter analysis and hardware check, find out the reason that influences network quality, and the adjustment of the modification by parameter, the adjustment of network configuration, equipment configuration and take some technological means, guarantee the high-quality operation of system, make conventional network resources obtain optimum efficiency, obtain maximum value with most economical input.
The method of the network optimization is a lot, adopts the drive test analytic approach to pinpoint the problems usually.The drive test analytic approach mainly is to analyze the data of air interface and measure to cover, and can understand by Drive Test (test of driving): whether base station distribution, coverage condition exist the blind area; Whether handoff relation, switching times, switch level be normal; Whether down link has with frequently, adjacent interference frequently; Whether island effect is arranged; Whether the sector misplaces; Whether Downtilt, azimuth and antenna height be reasonable; Analyze the call through situation, find out the reason of calling out obstructed and call drop, provide foundation for formulating network optimization scheme and implementing the network optimization.Wherein, whether down link has with frequently, the neighbour disturbs frequently will directly influence network running quality.Along with network size and website density constantly become big, the problem of frequency resource anxiety becomes increasingly conspicuous, frequency interferences problem in various degree can appear in local hot spot areas inevitably, and can't solve by frequency optimization, how accurately the location exists the zone of frequency interferences problem to become the most important thing of the network optimization.Yet also there is not to adopt the mode with the assessment frequency limited accurately to locate the zone that has the frequency interferences problem in the prior art.
In summary, the appraisal procedure of existing frequency limited obviously exists inconvenience and defective, so be necessary to be improved on reality is used.
Summary of the invention
At above-mentioned defective, the object of the present invention is to provide a kind of appraisal procedure and system of frequency limited, it can accurately locate the zone that has the frequency interferences problem, and guide rational and effective network coverage structure optimization scheme by disclosing the overlapping covering relation in minizone, fundamentally promote network quality, reach the network resource utilization maximization.
To achieve these goals, the invention provides a kind of appraisal procedure of frequency limited, comprise the steps: at least
A, the frequency sweep data of gathering a plurality of Serving cells;
B, according to the possible main Serving cell of described each test point of frequency sweep data judging;
C, obtain the overlapping overlay model of minizone according to the possible main Serving cell of described each test point, and described overlapping overlay model is formed the overlapping covering logic graph of a relation of minizone by the logical relation conversion;
D, according to overlapping covering logic relation and the limited factor of each cell carrier configuration calculated rate of described minizone, judge whether to exist according to the described frequency limited factor and disturb.
According to appraisal procedure of the present invention, among the described step B, the Rule of judgment of described main Serving cell is: the residential quarter that the difference of the field intensity of described test point and the strongest residential quarter field intensity is less than or equal to a preset value is main Serving cell; Perhaps the difference of test point field intensity and the strongest residential quarter field intensity is greater than described preset value, but this residential quarter be one deck residential quarter and described test point field intensity greater than its layer threshold value, then this residential quarter is main Serving cell.
According to appraisal procedure of the present invention, among the described step C, described logical relation is expressed as the connected relation of two minizones, if the overlapping coverage coefficient of two minizones is greater than or equal to 2 in the overlapping overlay model, then between two residential quarters connected relation is arranged, and in overlapping covering logic graph of a relation, express this connected relation.
According to appraisal procedure of the present invention, in overlapping covering logic graph of a relation, have in the cell cluster of connected relation in twos, have the cell combination of maximum connected relations largest connected bunch.
According to appraisal procedure of the present invention, among the described step D, the computing formula of the described frequency limited factor is: P=(C
Connected/ F
Avalible) * 100, wherein P represents the described frequency limited factor, C
ConnectedThe carrier wave sum of representing described largest connected bunch of carrying, F
AvalibleExpression network frequency number, the carrier wave of described largest connected bunch of carrying adds up to the carrier number sum of each cell configuration in described largest connected bunch; If the described largest connected bunch frequency limited factor is greater than setting threshold 100, then exists in described largest connected bunch and disturb.
The present invention is corresponding to provide a kind of evaluating system of realizing said method, and described system comprises at least: acquisition module is used for gathering the frequency sweep data of a plurality of residential quarters; Judge module is used for according to the possible main Serving cell of described each test point of frequency sweep data judging; Modular converter is used for obtaining the overlapping overlay model of minizone according to the possible main Serving cell of described each test point, and described overlapping overlay model is formed the overlapping covering logic graph of a relation of minizone by the logical relation conversion; Evaluation module is used for overlapping covering logic relation and the limited factor of each cell carrier configuration calculated rate according to described minizone, judges whether there is interference in the residential quarter according to the described frequency limited factor.
According to evaluating system of the present invention, described judge module judges that the condition of described main Serving cell is: the residential quarter that the difference of described test point field intensity and the strongest residential quarter field intensity is less than or equal to a preset value is main Serving cell; Perhaps the difference of described test point field intensity and the strongest described residential quarter field intensity is greater than described preset value, but this residential quarter be one deck residential quarter and described test point field intensity greater than its layer threshold value, then this residential quarter is main Serving cell.
According to evaluating system of the present invention, in described modular converter, described logical relation is expressed as the connected relation of two minizones, if the overlapping coverage coefficient of two minizones is greater than or equal to 2 in the described overlapping overlay model, then between described two residential quarters connected relation is arranged, and in described overlapping covering logic graph of a relation, express this connected relation.
According to evaluating system of the present invention, in described overlapping covering logic graph of a relation, have in the cell cluster of connected relation in twos, the cell combination with maximum connected relations is largest connected bunch.
According to evaluating system of the present invention, in the described evaluation module, the computing formula of the described frequency limited factor is: P=(C
Connected/ F
Avalible) * 100, wherein P represents the described frequency limited factor, C
ConnectedThe carrier wave sum of representing described largest connected bunch of carrying, F
AvalibleExpression network frequency number, the carrier wave of described largest connected bunch of carrying adds up to the carrier number sum of each cell configuration in described largest connected bunch; If the described largest connected bunch frequency limited factor is greater than setting threshold 100, then exists in described largest connected bunch and disturb.
The present invention is by gathering the frequency sweep data of a plurality of Serving cells; Judge the main Serving cell that each test point is possible according to the frequency sweep data; Obtain the overlapping overlay model of minizone according to the possible main Serving cell of each test point, overlapping overlay model is converted to the overlapping covering logic graph of a relation of minizone; Overlapping covering logic relation and the limited factor of each cell carrier configuration calculated rate according to the minizone judge whether to exist interference according to the frequency limited factor.Whereby, the present invention can accurately locate the zone that has the frequency interferences problem, and guides rational and effective network coverage structure optimization scheme by disclosing the overlapping covering relation in minizone, fundamentally promotes network quality, reaches the network resource utilization maximization.
Description of drawings
Fig. 1 is the principle assumption diagram of the evaluating system of a kind of frequency limited of the present invention;
Fig. 2 is the overlapping overlay model of an embodiment of the present invention;
Fig. 3 is the overlapping covering logic graph of a relation of an embodiment of the present invention;
Fig. 4 is the particular flow sheet of the appraisal procedure of a kind of frequency limited of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
As shown in Figure 1, the evaluating system 100 of a kind of frequency limited of the present invention, it comprises at least:
When frequency limited need consider that traffic is maximized, the field intensity difference residential quarter (theory should be the strongest residential quarter, on the spot the residential quarter of strong ordering first) within the specific limits of test point and the strongest residential quarter was as main Serving cell.But actual conditions are the strongest residential quarters of each test point is not invariable, and the traffic of different time residential quarter also can change, covering each residential quarter of this test point might be because the traffic reason be occupied, therefore need preset a following relative threshold value X when judging main Serving cell, the Rule of judgment of main Serving cell is:
The field intensity relative difference Rule of judgment of A, main Serving cell is that (default value is 15 to X, can adjust), namely all might become main Serving cell at 15dB with interior residential quarter with the strongest residential quarter field intensity difference, namely to be less than or equal to the residential quarter of 15DB be main Serving cell to the difference of the field intensity of test point and the strongest residential quarter field intensity.
B, if certain residential quarter is 1 layer of residential quarter, field intensity is greater than its layerthr (one of network parameter: layer threshold value), and field intensity and the strongest 1 layer of residential quarter field intensity difference be beyond 15dB, then this residential quarter while also is main Serving cell.
Be the test point field intensity with the difference of the strongest residential quarter field intensity greater than 15dB, but this residential quarter be 1 layer of residential quarter and test point field intensity greater than its layerthr, then this residential quarter is main Serving cell.
Therefore, main Serving cell is the intersection of A+B.Condition A represents that the field intensity difference is considered to main Serving cell at X with interior residential quarter, and condition B represents the field intensity difference beyond X, and to be 1 layer of residential quarter and field intensity also be considered to main Serving cell greater than the residential quarter of its layerthr but satisfy.For example a test point is received the signal of 30 residential quarters, and 10 residential quarters A that satisfies condition is wherein arranged, and 2 residential quarters B that satisfies condition is arranged, and the main Serving cell that this test point is possible has 12 so.
In modular converter 30, logical relation is expressed as the connected relation of two minizones, if the overlapping coverage coefficient of two minizones is greater than or equal to 2 in the overlapping overlay model, then there is connected relation (even to have the main Serving cell of the test point more than 2 to comprise A residential quarter and B residential quarter between two residential quarters, between A residential quarter and the B residential quarter connected relation is arranged so), and in overlapping covering logic graph of a relation, express this connected relation.Simultaneously, have in overlapping covering logic graph of a relation in the cell cluster of connected relation in twos, the cell combination with maximum connected relations is largest connected bunch, as shown in Figure 34 residential quarters of DABC form bunch, be communicated with in twos, form largest connected bunch centered by D.
The computing formula of the frequency limited factor is: P=(C
Connected/ F
Avalible) * 100, wherein P represents the frequency limited factor, C
ConnectedThe carrier wave sum of representing largest connected bunch of carrying, the carrier wave of largest connected bunch of carrying add up to the carrier number sum of each cell configuration in largest connected bunch.F
AvalibleRepresent network frequency number, namely distribute to the frequency resource of each operator, comprise such as the GSM network: the available frequency number of the available frequency number of the BCCH/TCH of GSM900 network and the BCCH/TCH of DCS1800 network.If largest connected bunch the frequency limited factor is greater than setting threshold 100, then there is interference in this largest connected bunch.
According to one embodiment of present invention, for example largest connected bunch of certain test point comprises 4 residential quarter ABCD, four residential quarters have all disposed 20 carrier waves, suppose that this network can be 20 with the BCCH frequency, available TCH frequency is 50, then the BCCH frequency limited factor is (4/20) * 100=20, and the TCH frequency limited factor is (4*20-4)/50) * 100=152.Because the TCH frequency limited factor is greater than 100, obviously there is interference in this largest connected bunch.When the overlapping covering in minizone increases, frequency limited factor P constantly increases, and little area overlapping surpasses to a certain degree in bunch, and frequency limited factor P＞100 at this moment, do not have available frequency in largest connected bunch again, and disturb inevasible appearance this moment.
The present invention is by gathering the frequency sweep data of a plurality of Serving cells; Judge the main Serving cell that each test point is possible according to the frequency sweep data; Obtain the overlapping overlay model of minizone according to the possible main Serving cell of each test point, overlapping overlay model is converted to the overlapping covering logic graph of a relation of minizone; Overlapping covering logic relation and the limited factor of each cell carrier configuration calculated rate according to the minizone judge whether to exist interference according to the frequency limited factor.Whereby, the present invention can accurately locate the zone that necessarily has the frequency interferences problem, and guide rational and effective network coverage structure optimization scheme by disclosing the overlapping covering relation in minizone, fundamentally promote network quality, reach the network resource utilization maximization.
As shown in Figure 4, the present invention is corresponding to provide a kind of frequency limited appraisal procedure, and it realizes that by system as shown in Figure 1 this appraisal procedure comprises the steps: at least
Step S401, the frequency sweep data of gathering a plurality of Serving cells, this step is realized by acquisition module 10.This step can adopt all roads enterprising driving of high-precision sweep generator in optimizing the zone to carry test, the frequency sweep data are gathered, utilize sweep generator to compare conventionally test terminal more high-performance, more high-precision advantage, the data of surveying can more clearly represent the coverage condition of each residential quarter.
Step S402, the main Serving cell possible according to each test point of frequency sweep data judging, this step is realized by judge module 20.Its concrete determination methods is described in detail in preamble, so do not giving unnecessary details at this.
Step S403 obtains the overlapping overlay model of minizone according to the possible main Serving cell of each test point, and with the overlapping covering logic graph of a relation of overlapping overlay model by logical relation conversion formation minizone, this step is realized by modular converter 30.The concrete acquisition methods of its overlapping overlay model and overlapping covering logic graph of a relation conversion method are described in detail in preamble, so do not giving unnecessary details at this.
Step S404, overlapping covering logic relation and the limited factor of each cell carrier configuration calculated rate according to the minizone judge whether to exist interference according to the frequency limited factor, and this step is realized by evaluation module 40.Concrete computational methods and the determination methods of the frequency limited factor are described in detail in preamble, so do not giving unnecessary details at this.
In sum, the present invention is by gathering the frequency sweep data of a plurality of Serving cells; Judge the main Serving cell that each test point is possible according to the frequency sweep data; Obtain the overlapping overlay model of minizone according to the possible main Serving cell of each test point, overlapping overlay model is converted to the overlapping covering logic graph of a relation of minizone; Overlapping covering logic relation and the limited factor of each cell carrier configuration calculated rate according to the minizone judge whether to exist interference according to the frequency limited factor.Whereby, the present invention can accurately locate the zone that has the frequency interferences problem, and guides rational and effective network coverage structure optimization scheme by disclosing the overlapping covering relation in minizone, fundamentally promotes network quality, reaches the network resource utilization maximization.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the appraisal procedure of a frequency limited is characterized in that, comprises the steps: at least
A, the frequency sweep data of gathering a plurality of Serving cells;
B, according to the possible main Serving cell of described each test point of frequency sweep data judging;
C, obtain the overlapping overlay model of minizone according to the possible main Serving cell of described each test point, and described overlapping overlay model is formed the overlapping covering logic graph of a relation of minizone by the logical relation conversion;
D, according to the overlapping covering logic graph of a relation of described minizone and the limited factor of each cell carrier configuration calculated rate, judge whether to exist according to the described frequency limited factor and disturb.
2. appraisal procedure according to claim 1 is characterized in that, among the described step B, the Rule of judgment of described main Serving cell is: the residential quarter that the difference of the field intensity of described test point and the strongest residential quarter field intensity is less than or equal to a preset value is main Serving cell; Perhaps the difference of test point field intensity and the strongest residential quarter field intensity is greater than described preset value, but this residential quarter be one deck residential quarter and described test point field intensity greater than its layer threshold value, then this residential quarter is main Serving cell.
3. appraisal procedure according to claim 1, it is characterized in that, among the described step C, described logical relation is expressed as the connected relation of two minizones, if the overlapping coverage coefficient of two minizones is greater than or equal to 2 in the overlapping overlay model, then between two residential quarters connected relation is arranged, and in overlapping covering logic graph of a relation, express this connected relation.
4. appraisal procedure according to claim 3 is characterized in that, has in overlapping covering logic graph of a relation in the cell cluster of connected relation in twos, has the cell combination of maximum connected relations largest connected bunch.
5. appraisal procedure according to claim 4 is characterized in that, among the described step D, the computing formula of the described frequency limited factor is: P=(C
Connected/ F
Avalible) * 100, wherein P represents the described frequency limited factor, C
ConnectedThe carrier wave sum of representing described largest connected bunch of carrying, F
AvalibleExpression network frequency number, the carrier wave of described largest connected bunch of carrying adds up to the carrier number sum of each cell configuration in described largest connected bunch; If the described largest connected bunch frequency limited factor is greater than setting threshold 100, then exists in described largest connected bunch and disturb.
6. evaluating system of be used for realizing each described method of claim 1～5 is characterized in that described system comprises at least:
Acquisition module is for the frequency sweep data of gathering a plurality of residential quarters;
Judge module is used for according to the possible main Serving cell of described each test point of frequency sweep data judging;
Modular converter is used for obtaining the overlapping overlay model of minizone according to the possible main Serving cell of described each test point, and described overlapping overlay model is formed the overlapping covering logic graph of a relation of minizone by the logical relation conversion;
Evaluation module is used for overlapping covering logic graph of a relation and the limited factor of each cell carrier configuration calculated rate according to described minizone, judges whether there is interference in the residential quarter according to the described frequency limited factor.
7. evaluating system according to claim 6 is characterized in that, described judge module judges that the condition of described main Serving cell is: the residential quarter that the difference of described test point field intensity and the strongest residential quarter field intensity is less than or equal to a preset value is main Serving cell; Perhaps the difference of described test point field intensity and the strongest described residential quarter field intensity is greater than described preset value, but this residential quarter be one deck residential quarter and described test point field intensity greater than its layer threshold value, then this residential quarter is main Serving cell.
8. evaluating system according to claim 6, it is characterized in that, in described modular converter, described logical relation is expressed as the connected relation of two minizones, if the overlapping coverage coefficient of two minizones is greater than or equal to 2 in the described overlapping overlay model, then between described two residential quarters connected relation is arranged, and in described overlapping covering logic graph of a relation, express this connected relation.
9. evaluating system according to claim 8 is characterized in that, has in described overlapping covering logic graph of a relation in the cell cluster of connected relation in twos, and the cell combination with maximum connected relations is largest connected bunch.
10. evaluating system according to claim 9 is characterized in that, in the described evaluation module, the computing formula of the described frequency limited factor is: P=(C
Connected/ F
Avalible) * 100, wherein P represents the described frequency limited factor, C
ConnectedThe carrier wave sum of representing described largest connected bunch of carrying, F
AvalibleExpression network frequency number, the carrier wave of described largest connected bunch of carrying adds up to the carrier number sum of each cell configuration in described largest connected bunch; If the described largest connected bunch frequency limited factor is greater than setting threshold 100, then exists in described largest connected bunch and disturb.
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| CN 201010241406 CN101951627B (en) | 2010-07-30 | 2010-07-30 | Assessment method and system for frequency restriction |
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|---|---|---|---|
| CN 201010241406 CN101951627B (en) | 2010-07-30 | 2010-07-30 | Assessment method and system for frequency restriction |
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| CN101951627A CN101951627A (en) | 2011-01-19 |
| CN101951627B true CN101951627B (en) | 2013-08-07 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186199B (en) * | 2011-03-09 | 2013-10-30 | 深圳市科虹通信有限公司 | Frequency sweeping-based method and system for optimizing frequency and scrambler |
| CN102857933B (en) * | 2012-03-26 | 2015-03-25 | 大唐移动通信设备有限公司 | Testing method and equipment of indoor covering |
| CN104717679B (en) * | 2013-12-17 | 2018-04-27 | 北京神州泰岳软件股份有限公司 | Signal optimizing method and system |
| CN106856608B (en) * | 2015-12-09 | 2019-12-20 | 中国联合网络通信集团有限公司 | LTE network base station coverage effectiveness evaluation method and device |
| CN106100924B (en) * | 2016-06-15 | 2019-06-11 | 成都科来软件有限公司 | The method and system that a kind of service logic and performance state show simultaneously |
| CN111314926B (en) * | 2020-01-15 | 2021-02-09 | 徐康庭 | Coverage relation determination method and device and computer readable storage medium |
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