CN103841601A - Method for accurately evaluating inter-TD-SCDMA-cell frequency and scrambling code interference severity levels - Google Patents
Method for accurately evaluating inter-TD-SCDMA-cell frequency and scrambling code interference severity levels Download PDFInfo
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Abstract
The invention discloses a method for accurately evaluating the inter-TD-SCDMA-cell frequency and scrambling code interference severity levels. The method is characterized by mainly comprises the steps of (1) collecting MRO data and extracting measurement reports of a primary cell and a neighboring cell, (2) calculating the frequency Noise value and the scrambling code Noise value according to the configuration condition of frequency and scrambling codes of the primary cell and the neighboring cell, and (3) determining the inter-cell frequency interference severity level and the inter-cell scrambling code interference severity level according to the frequency Noise value and the scrambling code Noise value. According to the method, the arithmetic speed of the algorithm is high, efficiency is high, inter-network-cell frequency and scrambling code interference severity levels can be obtained through statistics with latest network MRO measurement data at any time, initiative performance and real-time performance are good, and various daily and special optimization requirements can be well met.
Description
Technical field
The present invention relates to the communications field, specifically refer to the method for a kind of accurate assessment TD-SCDMA minizone frequency scrambling interference menace level.
Background technology
At present, in the communications field, people are the interference sizes of inferring frequency by frequency reuse distance, and so-called frequency reuse distance refers to and meeting under communication quality requirement, the minimum range between the community of permission use same frequency.Along with business constantly rises and the continuous dilatation of base station carrier capacity, the number of times of channeling is also more and more, and the distance of channeling is also more and more nearer, also coming out gradually of defect of its existence originally.Mainly there are following three kinds of technological deficiencies in it:
One, because existing technical scheme majority is based on the relatively geographical position relationship in community, applies mechanically and plans what formwork calculation drew, therefore higher to the accuracy requirement of basic data.But, the current means that also lack verification geographical position, azimuth, antenna extension high accuracy, template is is too copied mechanically and applied indiscriminately simultaneously, lacks the consideration to current conditions, underaction, therefore program results is with a low credibility, occurs that the probability of mispairing is higher.
They are two years old, because existing technical scheme is without any the embodiment of the current relation of network, its planning all using geographical position as main with reference to reference data, based on what carry out on rationalization Planning concept basis, therefore it cannot reflect that network cannot truly reflect network interferences situation in the level of interference of different scenes, different period application different frequency and different scrambling codes again.
Its three, along with the continuous rising of traffic carrying capacity, the continuous increase of network base station carrier capacity and improving constantly of base station construction density, also constantly rise with collision probability frequently but the thing followed is frequency, the frequency reuse distance in net is more and more nearer.And the optional frequency of arbitrary cells cannot judge that frequency disturbs big or small method to carry out by multiplex distance with the disturbed condition of any scrambler in network.
In sum, the judgement of minizone frequency scrambling interference menace level at present only relies on multiplex distance to infer, completely inapplicable.
Summary of the invention
The object of the invention is to overcome current dependence multiplex distance and infer that the existing probability with a low credibility, that occur mispairing of interference size of frequency is higher, cannot truly reflect network interferences situation, and cannot determine the optional frequency of arbitrary cells in network and any defect of the disturbed condition of scrambler, the method for a kind of accurate assessment TD-SCDMA minizone frequency scrambling interference menace level is provided.
Object of the present invention is achieved through the following technical solutions: the method for a kind of accurate assessment TD-SCDMA minizone frequency scrambling interference menace level, mainly comprises the following steps:
(1) collect MRO data, extract the measurement report of main plot and adjacent cell;
(2) according to the configuring condition of main plot and adjacent cell frequency, scrambler, calculated rate Noise value and scrambler Noise value;
(3) finally according to frequency interferences grade and the scrambling interference grade of the size judgement minizone of frequency N oise value and scrambler Noise value.
Further, the computing formula of the frequency N oise value described in step (2) is:
The computing formula of described scrambler Noise value is:
Wherein, frequency N oise
ser-Adjfor the frequency interferences normalization class index between main plot and adjacent cell, the larger explanation of this value main plot is disturbed stronger by adjacent cell;
Scrambler Noise
ser-Adjfor the scrambling interference index between main plot and adjacent cell, the larger explanation of this value main plot is disturbed stronger by adjacent cell;
1G
ser-Adjfor meeting the common frequency measurement sampled point quantity of the be more than or equal to-6dB of difference between adjacent cell PccpchRSCP value and main plot PccpchRSCP value.
2A
ser-Adjfor meeting the different-frequency measure sampled point quantity of the be more than or equal to-6dB of difference between adjacent cell PccpchRSCP value and main plot PccpchRSCP value.
Same frequency
ser-Adjfor the same frequency amount between main plot and adjacent cell;
Carrier number
serfor total carrier number of main plot;
Total sampled point
serfor the overall measurement sampled point of the MRO of main plot;
Code correlation
ser-Adjfor the weight coefficient of main plot and adjacent cell frequency scrambler.
Wherein, described 1G
ser-Adjcomputing formula be:
Described 2A
ser-Adjcomputing formula be:
Code correlation
ser-Adjcomputing formula be:
Code correlation
ser-Adj=with frequently with code character weight+with frequently with compound code character weight+compound code character correlation, wherein, when main plot and adjacent cell are when frequently and with scrambler, this is 1.5 with frequency with code character weight value, otherwise its value 0; When main plot and adjacent cell are when frequently and with compound code character, this is with being 1 with compound code character weight value frequently, otherwise its value 0; The span of described compound code character correlation is 0.5625～0.9375.
Meanwhile, " finally the judging frequency interferences grade and the scrambling interference grade of minizone according to the size of frequency N oise value and scrambler Noise value " described in step (3), wherein, the criterion of frequency interferences grade is:
In the time of 0% < frequency N oise value≤10%, this frequency interferences grade is slight interference;
In the time of 10% < frequency N oise value≤30%, this frequency interferences grade is moderate interference;
In the time of 30% < frequency N oise value, this frequency interferences grade is severe jamming;
The criterion of scrambling interference grade is:
In the time of 0% < scrambler Noise value≤20%, this scrambling interference grade is slight interference;
In the time of 20% < frequency N oise value≤50%, this scrambling interference grade is moderate interference;
In the time of 50% < scrambler Noise value, this scrambling interference grade is severe jamming.
The present invention compares and has the following advantages and beneficial effect compared with prior art:
(1) the present invention has broken traditional planning and the optimum ideals in traditional simple dependence geographical position, for daily frequency, scrambling code planning and optimization provide method and more intuitively result more easily.
(2) the algorithm fast operation of the present patent application, efficiency is high, can count the frequency between network cell, the level of interference of scrambler by the up-to-date MRO measurement data of network at any time, there is high initiative and real-time, can respond fast the demand of various daily and special optimization.
(3) the algorithm basic data used that the present invention the proposes MRO measurement data that is magnanimity, it can fully reflect and be more conducive to the disturbed condition of actual frequency and scrambler in network backstage in batches and analyze, for the network optimization and planning provide authentic data to support.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
The method of accurate assessment of the present invention TD-SCDMA minizone frequency scrambling interference menace level, mainly comprises the following steps:
(1) collect MRO data, extract the measurement report of main plot and adjacent cell.
MRO data are the abbreviation of measurement report sample data, and MRS is the abbreviation of measurement report statistics.Measurement report statistics, is illustrated in a measurement period, the original measurement report sample size of the by stages statistics obtaining according to certain statistical condition.MRO measurement report mainly includes same-frequency measure reporting, different-frequency measure reporting and isosystem measurement report three types.And measurement report main information comprises: RNCID, CellID, IMSI, Serving cell dominant frequency frequency, Serving cell are current by information such as frequency, Serving cell scrambler, Serving cell code received power, adjacent cell dominant frequency frequency, adjacent cell scrambler, adjacent cell code received power, different system dominant frequency, different system colour coding, different system signal intensity and report reporting times.
Wherein, when identical with adjacent cell dominant frequency frequency with frequency, be same-frequency measure reporting when Serving cell is current, when not identical with adjacent cell dominant frequency frequency with frequency, be pilot frequency point measurement report when Serving cell is current, isosystem measurement refers to the measurement of TD to GSM, the metrical information that is mainly used in collecting 2G.Same measurement report can comprise same-frequency measure reporting, different-frequency measure reporting and isosystem measurement report simultaneously.
(2) according to configuring condition, calculated rate Noise value and the scrambler Noise value of main plot and adjacent cell frequency, scrambler.Wherein, the computing formula of frequency N oise value is:
And the computing formula of described scrambler Noise value is:
Wherein, frequency N oise
ser-Adjfor the frequency interferences normalization class index between main plot and adjacent cell, the larger explanation of this value main plot is disturbed stronger by adjacent cell.
Scrambler Noise
ser-Adjfor the scrambling interference index between main plot and adjacent cell, the larger explanation of this value main plot is disturbed stronger by adjacent cell.
1G
ser-Adjfor meeting the common frequency measurement sampled point quantity of the be more than or equal to-6dB of difference between adjacent cell PccpchRSCP value and main plot PccpchRSCP value, its computing formula is:
2A
ser-Adjfor meeting the different-frequency measure sampled point quantity of the be more than or equal to-6dB of difference between adjacent cell PccpchRSCP value and main plot PccpchRSCP value, its computing formula is:
Same frequency
ser-Adjfor the same frequency amount between main plot and adjacent cell;
Carrier number
serfor total carrier number of main plot;
Total sampled point
serfor the overall measurement sampled point of the MRO of main plot;
Code correlation
ser-Adjfor the weight coefficient of main plot and adjacent cell frequency scrambler.The distribution of scrambler is to carry out on the basis of having planned in frequency, therefore the Annoyance Index of scrambler has increased code correlation on frequency algorithm of interference basis, code correlation need first judge between main plot and adjacent cell whether exist with frequency with code character weight and same frequently with compound code character weight, and then draw in conjunction with the compound code character correlation of main plot and adjacent cell, its computing formula is: code correlation
ser-Adj=with frequently with code character weight+with frequently with compound code character weight+compound code character correlation.
For with frequently with for code character weight, if main plot and adjacent cell with frequently and same scrambler, its value is 1.5, otherwise value 0.
For with frequently with for compound code character weight, if main plot and adjacent cell with frequently and with compound code character, its value is 1, otherwise value 0.Wherein, compound key group allocation table is as shown in the table:
| Grouping | Scrambler mark |
| 1 | 0?4?25?26?28?29?33?39?41?42?48?52?54?56?84?89 |
| 2 | 1?5?7?10?15?20?40?46?47?49?61?64?75?82?118?126 |
| 3 | 2?3?6?11?12?17?22?23?34?35?36?38?45?50?65?86 |
| 4 | 8?9?13?14?18?19?24?27?32?37?44?67?70?104?116?117 |
| 5 | 16?21?30?31?43?59?78?85?92?94?99?105?107?109?124?125 |
| 6 | 51?58?102?127 |
| 7 | 53?80?91?100?120 |
| 8 | 55?60?71?83?87?112?115 |
| 9 | 57?77?81?88?96?97?101 |
| 10 | 62?68?69?76?108?122 |
| 11 | 63?66?72?79?93?95?106?110?113?123 |
| 12 | 73?74?90?98?103?111?114?119?121 |
The correlation that described compound code character correlation refers in TD-SDCMA system 12 code characters and 12 code characters are asked embodies, and its span is 0.5625～0.9375.This fixing comparable data that meets code character correlation is as shown in the table, and the correlation that is 0.5625, the 6 group and the 8th group as the correlation of the 1st group and the 3rd group correlation that is 0.875, the 1 group and the 9th group is 0.75.
(3) finally according to frequency interferences grade and the scrambling interference grade of the size judgement minizone of frequency N oise value and scrambler Noise value.The criterion of this frequency interferences grade and scrambling interference grade is to be decided by size and the affiliated interval range of frequency N oise value and scrambler Noise value.
Frequency interferences grade is divided into slight interference, moderate interference and severe jamming Three Estate, and its criterion is yes, and in the time of 0% < frequency N oise value≤10%, this frequency interferences grade is slight interference; In the time of 10% < frequency N oise value≤30%, this frequency interferences grade is moderate interference; In the time of 30% < frequency N oise value, this frequency interferences grade is severe jamming.
And scrambling interference grade is divided into slight interference, moderate interference and severe jamming Three Estate, its criterion is: in the time of 0% < scrambler Noise value≤20%, this scrambling interference grade is slight interference; In the time of 20% < frequency N oise value≤50%, this scrambling interference grade is moderate interference; In the time of 50% < scrambler Noise value, this scrambling interference grade is severe jamming.
As mentioned above, just can well realize the present invention.
Claims (4)
1. a method of precisely assessing TD-SCDMA minizone frequency scrambling interference menace level, is characterized in that, mainly comprises the following steps:
(1) collect MRO data, extract the measurement report of main plot and adjacent cell;
(2) according to the configuring condition of main plot and adjacent cell frequency, scrambler, calculated rate Noise value and scrambler Noise value;
(3) finally according to frequency interferences grade and the scrambling interference grade of the size judgement minizone of frequency N oise value and scrambler Noise value.
2. the method for a kind of accurate assessment according to claim 1 TD-SCDMA minizone frequency scrambling interference menace level, is characterized in that, the computing formula of the frequency N oise value described in step (2) is:
The computing formula of described scrambler Noise value is:
Wherein, frequency N oise
ser-Adjfor the frequency interferences normalization class index between main plot and adjacent cell, the larger explanation of this value main plot is disturbed stronger by adjacent cell;
Scrambler Noise
ser-Adjfor the scrambling interference index between main plot and adjacent cell, the larger explanation of this value main plot is disturbed stronger by adjacent cell;
1G
ser-Adjfor meeting the common frequency measurement sampled point quantity of the be more than or equal to-6dB of difference between adjacent cell PccpchRSCP value and main plot PccpchRSCP value;
2A
ser-Adjfor meeting the different-frequency measure sampled point quantity of the be more than or equal to-6dB of difference between adjacent cell PccpchRSCP value and main plot PccpchRSCP value;
Same frequency
ser-Adjfor the same frequency amount between main plot and adjacent cell;
Carrier number
serfor total carrier number of main plot;
Total sampled point
serfor the overall measurement sampled point of the MRO of main plot;
Code correlation
ser-Adjfor the weight coefficient of main plot and adjacent cell frequency scrambler.
3. the method for a kind of accurate assessment according to claim 2 TD-SCDMA minizone frequency scrambling interference menace level, is characterized in that described 1G
ser-Adjcomputing formula be:
Described 2A
ser-Adjcomputing formula be:
Code correlation
ser-Adjcomputing formula be:
Code correlation
ser-Adj=with frequently with code character weight+with frequently with compound code character weight+compound code character correlation, wherein, when main plot and adjacent cell are when frequently and with scrambler, this is 1.5 with frequency with code character weight value, otherwise its value 0; When main plot and adjacent cell are when frequently and with compound code character, this is with being 1 with compound code character weight value frequently, otherwise its value 0; The span of described compound code character correlation is 0.5625～0.9375.
4. the method for a kind of accurate assessment according to claim 2 TD-SCDMA minizone frequency scrambling interference menace level, it is characterized in that, " finally judging frequency interferences grade and the scrambling interference grade of minizone according to the size of frequency N oise value and scrambler Noise value " described in step (3), wherein, the criterion of frequency interferences grade is:
In the time of 0% < frequency N oise value≤10%, this frequency interferences grade is slight interference;
In the time of 10% < frequency N oise value≤30%, this frequency interferences grade is moderate interference;
In the time of 30% < frequency N oise value, this frequency interferences grade is severe jamming;
The criterion of scrambling interference grade is:
In the time of 0% < scrambler Noise value≤20%, this scrambling interference grade is slight interference;
In the time of 20% < frequency N oise value≤50%, this scrambling interference grade is moderate interference;
In the time of 50% < scrambler Noise value, this scrambling interference grade is severe jamming.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104507109A (en) * | 2014-12-22 | 2015-04-08 | 北京迪特卡得通信设备有限公司 | LTE (long term evolution) cell PCI (peripheral component interconnect) optimizing method based on MR measurement |
| CN105376743A (en) * | 2014-08-18 | 2016-03-02 | 中国移动通信集团广东有限公司 | Method and device for obtaining TD-SCDMA interference index |
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| CN102083075A (en) * | 2009-11-30 | 2011-06-01 | 中国移动通信集团江苏有限公司 | Frequency planning and scrambling code planning method and device based on adjacent zone priority level |
| WO2013126509A1 (en) * | 2012-02-21 | 2013-08-29 | Ablaze Wireless Corporation | Composite cell |
| CN103402211A (en) * | 2013-08-14 | 2013-11-20 | 北京迪特卡得通信设备有限公司 | Algorithm capable of obtaining interference degrees of TD-S frequencies and scrambling codes quantitatively |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102083075A (en) * | 2009-11-30 | 2011-06-01 | 中国移动通信集团江苏有限公司 | Frequency planning and scrambling code planning method and device based on adjacent zone priority level |
| WO2013126509A1 (en) * | 2012-02-21 | 2013-08-29 | Ablaze Wireless Corporation | Composite cell |
| CN103402211A (en) * | 2013-08-14 | 2013-11-20 | 北京迪特卡得通信设备有限公司 | Algorithm capable of obtaining interference degrees of TD-S frequencies and scrambling codes quantitatively |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376743A (en) * | 2014-08-18 | 2016-03-02 | 中国移动通信集团广东有限公司 | Method and device for obtaining TD-SCDMA interference index |
| CN105376743B (en) * | 2014-08-18 | 2018-12-07 | 中国移动通信集团广东有限公司 | A kind of method and device obtaining TD-SCDMA Annoyance Index |
| CN104507109A (en) * | 2014-12-22 | 2015-04-08 | 北京迪特卡得通信设备有限公司 | LTE (long term evolution) cell PCI (peripheral component interconnect) optimizing method based on MR measurement |
| CN104507109B (en) * | 2014-12-22 | 2019-04-05 | 北京胜普多邦通信技术有限公司 | A method of the LTE cell PCI optimization based on MR measurement |
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