CN105451246A - Signal optimization method and system in LTE network based on cell total interference - Google Patents

Abstract

The invention relates to a signal optimization system in an LTE (Long Term Evolution) network based on cell total interference, and relates to the technical field of mobile communication. According to the embodiment of the invention, the system can receive power according to a plurality of reference signals of all detection grids, and precisely calculates a quasi-service cell and a quasi-interference cell of each detection grid. The common-mode interference probability, obtained through precise calculation, of two cells of each detection grid is used for indicating the common-mode interference degree of two cells of one detection grid, thereby precisely calculating the total common-mode interference probability of the two cells in the all covered detection grids, wherein the total common-mode interference probability is used for representing the total common-mode interference degree of the two cells. The system can precisely analyze the interference condition of the LTE network, thereby achieving the precise signal optimization and adjustment of the two cells with the severe total common-mode interference, fundamentally improving the analysis capability of the LTE wireless network, and improving the overall performance of the network.

Description

Based on the signal optimizing method of area interference total amount and system in LTE network

Technical field

The present invention relates to mobile communication technology field, particularly in a kind of LTE long-term evolving network based on the method and system of the signal optimizing of area interference total amount.

Background technology

Under LTE (LongTermEvolution, Long Term Evolution) network, base station density is larger than the base station density of 2G, 3G network, and station spacing is little; There is MPS process planning, the PCI planning problems such as isotype interference that cause such as unreasonable are obvious, affect wireless network performance.

Along with the Large scale construction of LTE network, the isotype interference analysis of scientific and efficient LTE wireless network and optimization are key one rings of the construction quality ensureing LTE wireless network.

Therefore, signal disturbing analytical technology new under LTE network and analytical method must be explored, qualitative and the accurate quantitative analyses of more deep science is carried out to the interference of LTE wireless network and optimization problem, and then obtain optimal solution more accurately, fundamentally improve the overall performance of LTE wireless network.

Summary of the invention

In view of the above problems, the embodiment of the present invention provides in a kind of LTE long-term evolving network based on the signal optimizing method of area interference total amount and system, propose a kind of new signal disturbing analytical technology, interference total amount that the detection grid obtained by accurate Calculation is isotype, the isotype annoyance level of two minizones, accurate reflection road grid place, and then can the isotype probability of interference total amount of accurate calculation Chu Liangge community at all detection grid places covered, thus can carry out network signal more accurate, rational adjustment, fundamentally improve the overall performance of LTE wireless network.

The embodiment of the present invention have employed following technical scheme:

One embodiment of the invention provides the signal optimizing method based on area interference total amount in a kind of LTE long-term evolving network, and described method comprises:

For each detection grid, obtain multiple Reference Signal Received Power;

The accurate Serving cell that each described detection grid is corresponding and accurate interfered cell is determined according to described multiple Reference Signal Received Power;

Judge the isotype interference relationships in minizone, and calculate the isotype probability of interference of the first community at detection grid place by the second community; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely;

For each community, calculate the multiple detection grid places of the first community as accurate Serving cell by the isotype probability of interference sum of the second community, obtain the isotype probability of interference total amount of the first community by the second community;

Determine that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.

Describedly determine that the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell comprise according to described multiple Reference Signal Received Power:

Calculate each community at the mean value detecting grid place Reference Signal Received Power, as each community in the average reference signal received power detecting grid place;

Calculate in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power; Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, determine that described difference is less than Second Threshold and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power being greater than described first threshold.

The isotype interference relationships in described judgement minizone, and calculate the first community detecting grid place and comprise by the isotype probability of interference of the second community:

At detection grid place, for each accurate Serving cell, judge to there is other accurate Serving cell of all kinds of isotype interference relationships and accurate interfered cell between accurate Serving cell; There is the interference of mould 50 relation in the interference that described all kinds of isotype interference relationships comprises same physical-layer cell identifier PCI disturbs, PCI exists the interference of mould 3 relation, PCI exists mould 6 relation interference, PCI exists mould 30 relation, PCI, PCI exists the interference of auxiliary synchronous signals SSS with m0 relation, and PCI exists the interference of SSS with m1 relation;

At detection grid place, calculate the isotype probability of interference that the first community is subject to the second community that there is with it isotype interference relationships; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

All kinds of isotype interference relationships existed between each accurate Serving cell of described judgement and other accurate Serving cell and accurate interfered cell comprises:

Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical with the PCI of this accurate Serving cell, if identical, determine that accurate Serving cell exists with PCI interference relationships with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 3 deliverys and this be identical to the result of 3 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 3 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 6 deliverys and this be identical to the result of 6 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 6 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 30 deliverys and this be identical to the result of 30 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 30 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 50 deliverys and this be identical to the result of 50 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 50 relation with this;

Judge that whether the m0 of the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical with the m0 of the PCI auxiliary synchronous signals SSS of this accurate Serving cell, if identical, determine that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m0 relation with this;

Judge that whether the m1 of the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical with the m1 of the PCI auxiliary synchronous signals SSS of this accurate Serving cell, if identical, determine that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m1 relation with this.

Calculate at detection grid (log _p, lat _p) place first community A is to the isotype probability of interference C of the second community B that there is with it isotype interference relationships ^s _aB(log _p, lat _p) method be:

${C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)=\frac{1}{1+e^{-0.357+0.248\×[C_A({\log }_p,{\mathrm{lat}}_p)/I_B({\log }_p,{\mathrm{lat}}_p)]}}$

Calculate the multiple detection grid places of the first community A as accurate Serving cell by the isotype probability of interference sum of the second community B, obtain the isotype probability of interference total amount C of the first community A by the second community B ^s _aBmethod be:

${C^s}_{\mathrm{AB}}=\frac{\underset{n}{\mathrm{\Σ}}{C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)\×M_{\mathrm{AB},n}}{\underset{n}{\mathrm{\Σ}}{M}_{\mathrm{AB},n}}$

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B, C _a(log _p, lat _p) for community A is at detection grid (log _p, lat _p) the average reference signal received power at place, I _bfor community B (log _p, lat _p) at detection grid (log _p, lat _p) the average reference signal received power at place, log _pfor detecting grid longitude; lat _pfor detecting grid dimension values; M _{aB, n}for the number of times that the Reference Signal Received Power detecting grid place second community B at n is detected.

Specifically from LTE frequency sweep data, LTE drive test data and/or MR measurement report data, obtain multiple Reference Signal Received Power.

In addition, the embodiment of the present invention additionally provides the signal optimizing system based on area interference total amount in a kind of LTE long-term evolving network, and described system comprises:

Acquisition module, for for each detection grid, obtains multiple Reference Signal Received Power;

Cell type determination module, for determining the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell according to described multiple Reference Signal Received Power;

Grid is isotype probability of interference computing module, for judging the isotype interference relationships in minizone, and calculates the first community and is detecting the isotype probability of interference of grid place by the second community; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely;

Community is isotype probability of interference computing module, for for each community, calculates the multiple detection grid places of the first community as accurate Serving cell by the isotype probability of interference sum of the second community, obtains the isotype probability of interference total amount of the first community by the second community;

Location, problem cells and analysis module, for determining that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.

Described cell type determination module comprises:

Average reference signal received power computing unit, for calculating each community at the mean value detecting grid place Reference Signal Received Power, as each community in the average reference signal received power detecting grid place;

Cell type computing unit, for calculating in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power; Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, determine that described difference is less than Second Threshold and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power being greater than described first threshold.

Described grid is isotype, and probability of interference computing module comprises:

Isotype interference type judging unit, at detection grid place, for each accurate Serving cell, judges to there is other accurate Serving cell of all kinds of isotype interference relationships and accurate interfered cell between accurate Serving cell; There is the interference of mould 50 relation in the interference that described all kinds of isotype interference relationships comprises same physical-layer cell identifier PCI disturbs, PCI exists the interference of mould 3 relation, PCI exists mould 6 relation interference, PCI exists mould 30 relation, PCI, PCI exists the interference of auxiliary synchronous signals SSS with m0 relation, and PCI exists the interference of SSS with m1 relation;

Isotype probability of interference computing unit, at detection grid place, calculates the isotype probability of interference that the first community is subject to the second community that there is with it isotype interference relationships; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

Described isotype interference type judging unit comprises:

With PCI interference relationships judgment sub-unit, whether the PCI for the PCI with this accurate Serving cell that judge other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists with PCI interference relationships with this;

PCI mould 3 interference relationships judgment sub-unit, whether identical to the result of 3 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 3 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 3 relation with this;

PCI mould 6 interference relationships judgment sub-unit, whether identical to the result of 6 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 6 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 6 relation with this;

PCI mould 30 interference relationships judgment sub-unit, whether identical to the result of 30 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 30 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 30 relation with this;

PCI mould 50 interference relationships judgment sub-unit, whether identical to the result of 50 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 50 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 50 relation with this;

The SSS of PCI is with m0 interference relationships judgment sub-unit, whether the m0 for the PCI auxiliary synchronous signals SSS of the m0 with this accurate Serving cell that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m0 relation with this;

The SSS of PCI is with m1 interference relationships judgment sub-unit, whether the m1 for the PCI auxiliary synchronous signals SSS of the m1 with this accurate Serving cell that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m1 relation with this;

Described isotype probability of interference computing unit calculates at detection grid (log _p, lat _p) place first community A is to the isotype probability of interference C of the second community B that there is with it isotype interference relationships ^s _aB(log _p, lat _p) formula be:

${C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)=\frac{1}{1+e^{-0.357+0.248\×[C_A({\log }_p,{\mathrm{lat}}_p)/I_B({\log }_p,{\mathrm{lat}}_p)]}}$

Described community is isotype, and probability of interference computing module calculates the multiple detection grid places of the first community A as accurate Serving cell by the isotype probability of interference sum of the second community B, obtains the isotype probability of interference total amount C of the first community A by the second community B ^s _aBformula be:

${C^s}_{\mathrm{AB}}=\frac{\underset{n}{\mathrm{\Σ}}{C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)\×M_{\mathrm{AB},n}}{\underset{n}{\mathrm{\Σ}}{M}_{\mathrm{AB},n}}$

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B, C _a(log _p, lat _p) for community A is at detection grid (log _p, lat _p) the average reference signal received power at place, I _bfor community B (log _p, lat _p) at detection grid (log _p, lat _p) the average reference signal received power at place, log _pfor detecting grid longitude; lat _pfor detecting grid dimension values; M _{aB, n}for the number of times that the Reference Signal Received Power detecting grid place second community B at n is detected.

Visible, the embodiment of the present invention provides in a kind of LTE long-term evolving network based on the signal optimizing method of area interference total amount and system, can according to multiple Reference Signal Received Power of each detection grid, accurately calculate the accurate Serving cell of each detection grid and accurate interfered cell, the isotype probability of interference of two minizones, detection grid place obtained by accurate Calculation, the isotype annoyance level in minizone, grid place two is detected for being embodied in certain, and then can the isotype probability of interference total amount of accurate calculation Chu Liangge community at all detection grid places covered, for embodying two isotype interference overall degree in minizone, Accurate Analysis can go out LTE network disturbance regime, thus signal optimizing and adjustment are carried out in Liang Ge community that can be serious to isotype interference overall degree accurately.Qualitative and the accurate quantitative analyses scheme of more deep science is provided to the interference of LTE wireless network and optimization problem, and optimal solution more accurately, fundamentally improve the analysis ability of LTE wireless network, and then promote overall performance of network.

Accompanying drawing explanation

Based on the signal optimizing method flow chart of area interference total amount in a kind of LTE long-term evolving network that Fig. 1 provides for the embodiment of the present invention;

The C/I that Fig. 2 provides for the embodiment of the present invention is to the mapping function schematic diagram of probability of interference;

Based on the signal optimizing system architecture diagram of area interference total amount in a kind of LTE long-term evolving network that Fig. 3 provides for the embodiment of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.

See Fig. 1, the embodiment of the present invention provides the signal optimizing method based on area interference total amount in a kind of LTE long-term evolving network, specifically comprises:

S101: for each detection grid, obtain multiple Reference Signal Received Power.

In LTE (LongTermEvolution, Long Term Evolution) network, have employed the Data Detection such as frequency sweep, drive test mode, detect grid for each, multiple Reference Signal Received Power can be obtained.In practical application, Reference Signal Received Power can be obtained from multiple channel.Preferably, specifically multiple Reference Signal Received Power can be obtained from LTE frequency sweep data, LTE drive test data and/or MR (MeasurementReport, measurement report) data.

LTE drive test is that the service feature of wireless network provides abundant analysis indexes, LTE frequency sweep has then carried out fully measuring accurately to the wireless performance of network comprehensively, and the integrated analysis of drive test frequency sweep is most important for the precision of analysis and efficiency promoting network.

It should be noted that, certain is detected for grid, around it, has several community, detected in data by drive test or frequency sweep etc., the Reference Signal Received Power of the plurality of community at this detection grid place can be got.For multiple sense cycle, multiple Reference Signal Received Power may have been detected at this detection grid place in certain community, and generally, preferred a kind of scheme is, need multiple Reference Signal Received Power calculating mean values of this community, to improve the accurately fixed of data operation further.

As preferably, this step also comprises carries out pretreated step to obtaining multiple Reference Signal Received Power in LTE frequency sweep data, LTE drive test data and/or MR (MeasurementReport, measurement report) data, can be specifically:

(1) give up hash: for the incomplete data of frequency sweep data, give up the data lacking longitude and latitude, PCI simultaneously;

(2) low-level data is given up: because the sensitivity of sweep generator is higher, can receive for the signal lower than-120dBm, and these data are not resolved concerning mobile phone, data do not have effect to analysis, therefore remove in the process imported;

(3) frequency sweep point is corresponded to community: be first determine community according to the frequency in frequency sweep data and PCI.If be not unique according to the community that frequency and PCI are determined, so by after the distance of calculation of longitude & latitude frequency sweep Dian Dao community using the Serving cell of nearest community as this frequency sweep point;

(4) the RSRP level average of the same community of identical longitude and latitude is got.Etc..

S102: determine the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell according to described multiple Reference Signal Received Power.

As a kind of preferred version, describedly determine that the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell comprise according to described multiple Reference Signal Received Power:

Calculate each community at the mean value detecting grid place Reference Signal Received Power, as each community in the average reference signal received power detecting grid place;

Calculate in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power; Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, determine that described difference is less than Second Threshold and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power being greater than described first threshold.

That is, grid place is detected at certain in certain community may detect multiple Reference Signal Received Power, first, calculate multiple Reference Signal Received Power that this detection grid place detects according to community calculating mean value, even detect grid place at certain, there are 4 communities around, are respectively A community, B community, C community, D community.Multiple Reference Signal Received Power of A, B, C, D community detected altogether, first, calculate this detection grid place, for the mean value of multiple Reference Signal Received Power of A community, obtain A community at the average reference signal received power P detecting grid place _a; For the mean value of multiple Reference Signal Received Power of B community, obtain B community at the average reference signal received power P detecting grid place _b; For the mean value of multiple Reference Signal Received Power of C community, obtain C community at the average reference signal received power P detecting grid place _c; For the mean value of multiple Reference Signal Received Power of D community, obtain D community at the average reference signal received power P detecting grid place _d.

In above-mentioned four average reference signal received powers, maximum is designated as P _max.

Then calculate in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power, be specially, calculate P respectively _max-P _a, P _max-P _b, P _max-P _c, P _max-P _d.Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, that is, the Serving cell that is as the criterion is determined in community corresponding to the average reference signal received power of above-mentioned difference in first threshold (such as 6db), described accurate Serving cell, refer at this detection grid place, the community of Serving cell may be become.Above-mentioned difference is less than Second Threshold (such as 12db) and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power be greater than in first threshold (such as 6db), described accurate interfered cell, refer at this detection grid place, the community of interfered cell may be become.And the community that maximum Reference Signal Received Power exceedes Second Threshold (such as 12db) is less than for Reference Signal Received Power, it has been generally acknowledged that the interference of this detection grid enough little, do not form interference signal, can ignore.

S103: judge the isotype interference relationships in minizone, and calculate the isotype probability of interference of the first community at detection grid place by the second community.

Wherein, described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

In LTE system, be used to determine the frequency domain position of the signals such as PSS, RS and PCFICH in community due to PCI, therefore should consider following general principle during planning:

(1) identical PCI is avoided to distribute to adjacent area;

(2) the identical PCI of mould 3 is avoided to distribute to adjacent area, with the identical access synchronous interference brought of the PSS sequence of evading neighbor cell and synchronization delayed time;

(3) avoid the identical PCI of mould 6 to distribute to adjacent area, come between cell reference signals with the time-frequency domain position identical generation of evading neighbor cell reference signal CRS and disturb;

(4) the identical PCI of mould 30 is avoided to distribute to adjacent area, with the identical uplink detection signal interference brought of SRS with the DMRS frequency domain position evading neighbor cell;

(5) the identical PCI of mould 50 is avoided to distribute to adjacent area, with the identical minizone PCFICH signal disturbing brought of the PCFICH frequency domain position evading neighbor cell.

(6) the identical m0/m1 of SSS signal is avoided to distribute to adjacent area, to evade the SSS signal synchronous interference and synchronization delayed time that the identical phase shift of SSS brings.

The basic ideas that interference problem that PCI is isotype is analyzed are as follows: according to being combined in drive test and frequency sweep process the minizone existed with Power Overlap covering frequently, whether the Mod3/Mod6/Mod30/Mod50 of the received power ratio of different test point different districts reference signal CRS, signal quality (as RS-CINR, RSRQ) and PCI is identical, namely whether there is isotype conflict, judge whether minizone exists the isotype interference of PCI.

As preferably, the isotype probability of interference total amount that grid place is being detected in each accurate Serving cell of described calculating comprises following sub-step:

Sub-step 1: at detection grid place, for each accurate Serving cell, judges to there is other accurate Serving cell of all kinds of isotype interference relationships and accurate interfered cell between accurate Serving cell.

Concrete, there is the interference of mould 50 relation in the interference that described all kinds of isotype interference relationships comprises same physical-layer cell identifier PCI disturbs, PCI exists the interference of mould 3 relation, PCI exists mould 6 relation interference, PCI exists mould 30 relation, PCI, PCI exists the interference of auxiliary synchronous signals SSS with m0 relation, and PCI exists the interference of SSS with m1 relation; Etc..

Because above-mentioned wherein isotype interference is comparatively serious interference In the view of at present, in order to improve computational efficiency, as preferably, in the embodiment of the present invention, only consider above-mentioned wherein isotype interference.But in practical application, can according to interference source sets itself, herein not conduct restriction.

It should be noted that, define 504 independently physical-layer cell identifier PCI in LTE system altogether, these PCI are divided into 168 groups, the sets of numbers that often group is corresponding different respectively (span is 0 ~ 167).Again containing 3 unique identification codes in each group (span is 0 ~ 2, ID in groups corresponding different respectively).So exist corresponding relation.

TD-LTE system adopts the mechanism such as interference randomization, interference elimination, interference coordination effectively to control co-channel interference.In LTE system, a lot of physical channel/signal is as PSS/SSS, PCFICH etc., and frequency domain position is all relevant with PCI at that time, and therefore the reasonability of PCI planning is very important.If PCI planning is bad, more serious neighboring interval interference can be caused, thus reduce cell throughout, increase propagation delay time etc.

From physical layer, the physical-layer cell identifier of PCI (physical-layerCellidentity) identifying cells, is made up of master sync signal (PSS) and auxiliary synchronous signals (SSS), can be obtained by simple operation.Formula is as follows: PCI=PSS+3*SSS, wherein PSS value is 0...2 (being 3 kinds of different PSS sequences in fact), SSS value is 0...167 (being 168 kinds of different SSS sequences in fact), the scope utilizing above-mentioned formula can obtain PCI is from 0...503, therefore there are 504 PCI in physical layer.

In fact, PCI can being interpreted as scrambler, just as downlink scrambling code is in a wcdma system for distinguishing sector, carrying out scrambling to sent data, so that terminal can distinguish different sector.

Isotype interference described here, SameModeILTErference, refers in TLE communication system, because the wireless network signal between the neighbor cell that the isotype conflict of PCI causes disturbs mutually.

Concrete, all kinds of isotype interference relationships existed between each accurate Serving cell of described judgement and other accurate Serving cell and accurate interfered cell comprises:

Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical with the PCI of this accurate Serving cell, if identical, determine that accurate Serving cell exists with PCI interference relationships with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 3 deliverys and this be identical to the result of 3 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 3 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 6 deliverys and this be identical to the result of 6 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 6 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 30 deliverys and this be identical to the result of 30 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 30 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 50 deliverys and this be identical to the result of 50 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 50 relation with this;

Judge that whether the m0 of the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical with the m0 of the PCI auxiliary synchronous signals SSS of this accurate Serving cell, if identical, determine that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m0 relation with this;

Judge that whether the m1 of the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical with the m1 of the PCI auxiliary synchronous signals SSS of this accurate Serving cell, if identical, determine that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m1 relation with this.

Such as, through above-mentioned judgement, other the accurate Serving cell that there is isotype interference relationships with accurate Serving cell A comprises { B ... C}, other the accurate interfered cell that there is isotype interference relationships with accurate Serving cell A comprises { D, E ... T}.

Sub-step 2: at detection grid place, calculates the isotype probability of interference that the first community is subject to the second community that there is with it isotype interference relationships; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

Continue to use above-mentioned example: through above-mentioned judgement, at detection grid place, other the accurate Serving cell that there is isotype interference relationships with accurate Serving cell A comprises { B ... C}, other the accurate interfered cell that there is isotype interference relationships with accurate Serving cell A comprises { D, E ... T}.Then, accurate Serving cell A is calculated at detection grid (log _p, lat _p) place is to the isotype probability of interference C of other accurate Serving cell and accurate interfered cell (for community B) of there is with it isotype interference relationships ^s _aB(log _p, lat _p) a kind of method can be:

${C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)=\frac{1}{1+e^{-0.357+0.248\×[C_A({\log }_p,{\mathrm{lat}}_p)/I_B({\log }_p,{\mathrm{lat}}_p)]}}$

At detection grid (log _p, lat _p) the computational methods principle of community, place A to the isotype probability of interference of other community be identical, repeat no longer one by one.

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B, C _a(log _p, lat _p) for community A is at detection grid (log _p, lat _p) the average reference signal received power at place, I _bfor community B (log _p, lat _p) at detection grid (log _p, lat _p) the average reference signal received power at place, log _pfor detecting grid longitude; lat _pfor detecting grid dimension values.

For the computational methods of probability of interference, be described in detail as follows:

At appointment longitude and latitude frequency sweep point (log _p, lat _p), assuming that this Serving cell is CELL _i, C _i(log _p, lat _p) and I _j(log _p, lat _p) be respectively sweep generator at this point to Serving cell CELL _iwith interfered cell CELL _jthe measured value RSRP of reference signal transmitted power level, then the co-channel interference probability C of this frequency sweep point ^s _ij(log _p, lat _p) algorithm is as follows:

$\begin{array}{c}{C^s}_{\mathrm{ij}}({\log }_p,{\mathrm{lat}}_p)=\mathrm{FER}[C_i({\log }_p,{\mathrm{lat}}_p)/I_j({\log }_p,{\mathrm{lat}}_p)]\\ =\frac{1}{1+e^{-0.357+0.248\×[C_i({\log }_p,{\mathrm{lat}}_p)/I_j({\log }_p,{\mathrm{lat}}_p)]}}\end{array}$

Wherein:

$\mathrm{FER}(C/I)=\frac{1}{1+e^{-0.357+0.248\×C/I}}$

FER (C/I) is for C/I is to probability of interference nonlinear mapping function, and as shown in Figure 2, FER (C/I) ∈ (0,1), FER (C/I), more close to 1, show that the probability of interference of two minizones is larger.

Preferably, in the embodiment of the present invention, adopt the mode specific implementation of probability of interference matrix.Concrete, record in probability of interference matrix and detect grid ID, latitude and longitude information, Serving cell ID, interfered cell ID, all kinds of isotype interference existence mark and detecting Serving cell, grid place to information such as the co-channel interference probability of interfered cell.A kind of specific implementation form of probability of interference matrix can be form shown in table 1:

Table 1 probability of interference matrix

Wherein, Serving cell ID, can be obtained by CellID=eNodeBID*256+SectorID.

S_PCI: Serving cell PCI.

Interfered cell ID, can be obtained by CellID=eNodeBID*256+SectorID.

I_PCI: interfered cell PCI.

In practical application, through judging, the PCI relation of Serving cell and interfered cell: be identical PCI, one or more during isotype 3/6/30/50, SSS same m0, SSS disturbs with m1 kind PCI relation.According to result of determination, at probability of interference matrix isotype interference mark place, do following mark (existence is designated as 1, does not exist and is designated as 0).

1: two adjacent cell is disturbed with PCI, CoPCI=1, otherwise CoPCI=0;

2: two adjacent cell PCI exist mould 3 to be disturbed, MOD3=1, otherwise MOD3=0;

3: two adjacent cell PCI exist mould 6 to be disturbed, MOD6=1, otherwise MOD6=0;

4: two adjacent cell PCI exist mould 30 to be disturbed, MOD30=1, otherwise MOD30=0;

5: two adjacent cell PCI exist mould 50 to be disturbed, MOD50=1, otherwise MOD50=0;

6: two adjacent cells (not belonging to same PCI Zu Nei community) there is SSS and disturb with m0, SSSm0=1 in PCI, otherwise SSSm0=0;

7: two adjacent cells (not belonging to same PCI Zu Nei community) there is SSS and disturb with m1, SSSm1=1 in PCI, otherwise SSSm1=0.

Be subject to the computation grid interference value total amount of dissimilar isotype interference according to each grid in different service coverage communities, come quantificational description specified services community with this and be disturbed degree at this grid.

S104: for each community, calculates the multiple detection grid places of the first community as accurate Serving cell by the isotype probability of interference sum of the second community, obtains the isotype probability of interference total amount of the first community by the second community.

Concrete, calculate the multiple detection grid places of the first community A as accurate Serving cell by the isotype probability of interference sum of the second community B, obtain the isotype probability of interference total amount C of the first community A by the second community B ^s _aBmethod be:

${C^s}_{\mathrm{AB}}=\frac{\underset{n}{\mathrm{\Σ}}{C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)\×M_{\mathrm{AB},n}}{\underset{n}{\mathrm{\Σ}}{M}_{\mathrm{AB},n}}$

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B.

Specifically, detection grid { g, i of covering as accurate Serving cell of community A ... j}.Wherein there is n (supposing n=5) individual detection grid Zhong Yu community B to there is isotype interference relationships, then detect in grid for this n:

First is detected grid place, and the isotype probability of interference of community A and community B is C ₁, the number of times be detected at the Reference Signal Received Power of this detection grid place second community B is 5, i.e. M _{aB, 1}be 5;

Second is detected grid place, and the isotype probability of interference of community A and community B is C ₂, the number of times be detected at the Reference Signal Received Power of this detection grid place second community B is 3, i.e. M _{aB, 2}be 3;

3rd is detected grid place, and the isotype probability of interference of community A and community B is C ₃, the number of times be detected at the Reference Signal Received Power of this detection grid place second community B is 4, i.e. M _{aB, 3}be 4;

4th is detected grid place, and the isotype probability of interference of community A and community B is C ₄, the number of times be detected at the Reference Signal Received Power of this detection grid place second community B is 6, i.e. M _{aB, 4}be 6;

5th is detected grid place, and the isotype probability of interference of community A and community B is C ₅, the number of times be detected at the Reference Signal Received Power of this detection grid place second community B is 3, i.e. M _{aB, 5}be 3;

Then community A by community B by the isotype probability of interference total amount of the second community is:

${C^s}_{\mathrm{AB}}=\frac{C_1\×5+C_2\×3+C_3\×4+C_4\×6+C_5\×3}{5+3+4+6+3}$

The isotype probability of interference total amount of minizone is larger, then illustrate these two minizones interference more serious.In the embodiment of the present invention, the isotype probability of interference detecting two minizones, grid place can be calculated accurately, the isotype annoyance level in minizone, grid place two is detected for being embodied in certain, and then can the isotype probability of interference total amount of accurate calculation Chu Liangge community at all detection grid places covered, for embodying two isotype interference overall degree in minizone.

S105: determine that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.

The isotype probability of interference total amount of two minizones, can be used in the degree assessing two isotype interference in minizone accurately, the isotype probability of interference total amount of minizone is larger, then illustrate that the degree of the isotype interference of these two minizones is more serious.In the embodiment of the present invention, determine that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, thus the Optimization and tuning of signal can be carried out targetedly to problem cells, such as PCI is more reasonably planned etc.

Accurate quantification is analyzed and is located the isotype interference problem of PCI in LTE wireless network, for the optimization of the isotype interference in LTE wireless network provides scientific basis.PCI prioritization scheme that is overall or local is optimized for providing by the isotype serious interference cell cluster of PCI.

Visible, the embodiment of the present invention provides the signal optimizing method based on area interference total amount in a kind of LTE long-term evolving network, can according to multiple Reference Signal Received Power of each detection grid, accurately calculate the accurate Serving cell of each detection grid and accurate interfered cell, the isotype probability of interference of two minizones, detection grid place obtained by accurate Calculation, the isotype annoyance level in minizone, grid place two is detected for being embodied in certain, and then can the isotype probability of interference total amount of accurate calculation Chu Liangge community at all detection grid places covered, for embodying two isotype interference overall degree in minizone, Accurate Analysis can go out LTE network disturbance regime, thus signal optimizing and adjustment are carried out in Liang Ge community that can be serious to isotype interference overall degree accurately.In LTE system, because the frequency domain position of the signals such as PCI and PSS, RS and PCFICH in community is associated, therefore scientific and reasonable planning PCI is one of impact and the basis determining LTE wireless network performance.Therefore, the embodiment of the present invention provides the qualitative and accurate quantitative analyses scheme of more deep science to the interference of LTE wireless network and optimization problem, and optimal solution more accurately, fundamentally improve the analysis ability of LTE wireless network, and then promote overall performance of network.

Shown in Figure 3, the embodiment of the present invention additionally provides the signal optimizing system based on area interference total amount in a kind of LTE long-term evolving network, and described system comprises:

Acquisition module 301, for for each detection grid, obtains multiple Reference Signal Received Power;

Cell type determination module 302, for determining the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell according to described multiple Reference Signal Received Power.

Grid is isotype probability of interference computing module 303, for judging the isotype interference relationships in minizone, and calculates the first community and is detecting the isotype probability of interference of grid place by the second community; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

Community is isotype probability of interference computing module 304, for for each community, calculates the multiple detection grid places of the first community as accurate Serving cell by the isotype probability of interference sum of the second community, obtains the isotype probability of interference total amount of the first community by the second community.

Location, problem cells and analysis module 305, for determining that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.

Preferably, described cell type determination module comprises:

Average reference signal received power computing unit, for calculating each community at the mean value detecting grid place Reference Signal Received Power, as each community in the average reference signal received power detecting grid place;

Cell type computing unit, for calculating in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power; Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, determine that described difference is less than Second Threshold and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power being greater than described first threshold.

Preferably, the isotype probability of interference computing module of described grid comprises:

Isotype interference type judging unit, at detection grid place, for each accurate Serving cell, judges to there is other accurate Serving cell of all kinds of isotype interference relationships and accurate interfered cell between accurate Serving cell; There is the interference of mould 50 relation in the interference that described all kinds of isotype interference relationships comprises same physical-layer cell identifier PCI disturbs, PCI exists the interference of mould 3 relation, PCI exists mould 6 relation interference, PCI exists mould 30 relation, PCI, PCI exists the interference of auxiliary synchronous signals SSS with m0 relation, and PCI exists the interference of SSS with m1 relation;

Isotype probability of interference computing unit, at detection grid place, calculates the isotype probability of interference that the first community is subject to the second community that there is with it isotype interference relationships; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

Wherein, described isotype interference type judging unit comprises:

With PCI interference relationships judgment sub-unit, whether the PCI for the PCI with this accurate Serving cell that judge other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists with PCI interference relationships with this;

PCI mould 3 interference relationships judgment sub-unit, whether identical to the result of 3 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 3 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 3 relation with this;

PCI mould 6 interference relationships judgment sub-unit, whether identical to the result of 6 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 6 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 6 relation with this;

PCI mould 30 interference relationships judgment sub-unit, whether identical to the result of 30 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 30 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 30 relation with this;

PCI mould 50 interference relationships judgment sub-unit, whether identical to the result of 50 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 50 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 50 relation with this;

The SSS of PCI is with m0 interference relationships judgment sub-unit, whether the m0 for the PCI auxiliary synchronous signals SSS of the m0 with this accurate Serving cell that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m0 relation with this;

The SSS of PCI is with m1 interference relationships judgment sub-unit, whether the m1 for the PCI auxiliary synchronous signals SSS of the m1 with this accurate Serving cell that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m1 relation with this.

Described isotype probability of interference computing unit calculates at detection grid (log _p, lat _p) place first community A is to the isotype probability of interference C of the second community B that there is with it isotype interference relationships ^s _aB(log _p, lat _p) formula be:

${C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)=\frac{1}{1+e^{-0.357+0.248\×[C_A({\log }_p,{\mathrm{lat}}_p)/I_B({\log }_p,{\mathrm{lat}}_p)]}}$

Described community is isotype, and probability of interference computing module calculates the multiple detection grid places of the first community A as accurate Serving cell by the isotype probability of interference sum of the second community B, obtains the isotype probability of interference total amount C of the first community A by the second community B ^s _aBformula be:

${C^s}_{\mathrm{AB}}=\frac{\underset{n}{\mathrm{\Σ}}{C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)\×M_{\mathrm{AB},n}}{\underset{n}{\mathrm{\Σ}}{M}_{\mathrm{AB},n}}$

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B, C _a(log _p, lat _p) for community A is at detection grid (log _p, lat _p) the average reference signal received power at place, I _bfor community B (log _p, lat _p) at detection grid (log _p, lat _p) the average reference signal received power at place, log _pfor detecting grid longitude; lat _pfor detecting grid dimension values; M _{aB, n}for the number of times that the Reference Signal Received Power detecting grid place second community B at n is detected.

It should be noted that, in the embodiment of the present invention, specifically can obtain multiple Reference Signal Received Power from LTE frequency sweep data, LTE drive test data and/or MR measurement report data.

It should be noted that, the modules in present system embodiment or the operation principle of submodule and processing procedure specifically see the associated description in embodiment of the method shown in above-mentioned Fig. 1-Fig. 2, can repeat no more herein.

Visible, the embodiment of the present invention provides the signal optimizing system based on area interference total amount in a kind of LTE long-term evolving network, can according to multiple Reference Signal Received Power of each detection grid, accurately calculate the accurate Serving cell of each detection grid and accurate interfered cell, the isotype probability of interference of two minizones, detection grid place obtained by accurate Calculation, the isotype annoyance level in minizone, grid place two is detected for being embodied in certain, and then can the isotype probability of interference total amount of accurate calculation Chu Liangge community at all detection grid places covered, for embodying two isotype interference overall degree in minizone, Accurate Analysis can go out LTE network disturbance regime, thus signal optimizing and adjustment are carried out in Liang Ge community that can be serious to isotype interference overall degree accurately.In LTE system, because the frequency domain position of the signals such as PCI and PSS, RS and PCFICH in community is associated, therefore scientific and reasonable planning PCI is one of impact and the basis determining LTE wireless network performance.Therefore, the embodiment of the present invention provides the qualitative and accurate quantitative analyses scheme of more deep science to the interference of LTE wireless network and optimization problem, and optimal solution more accurately, fundamentally improve the analysis ability of LTE wireless network, and then promote overall performance of network.

For the ease of the technical scheme of the clear description embodiment of the present invention, in inventive embodiment, have employed the printed words such as " first ", " second " to distinguish the substantially identical identical entry of function and efficacy or similar item, it will be appreciated by those skilled in the art that the printed words such as " first ", " second " do not limit quantity and execution order.

One of ordinary skill in the art will appreciate that, the all or part of step realized in above-described embodiment method is that the hardware that can carry out instruction relevant by program has come, described program can be stored in a computer read/write memory medium, this program is when performing, comprise the steps: (step of method), described storage medium, as: ROM/RAM, magnetic disc, CD etc.

The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.

Claims (10)

1. in LTE long-term evolving network based on a signal optimizing method for area interference total amount, it is characterized in that, described method comprises:

For each detection grid, obtain multiple Reference Signal Received Power;

The accurate Serving cell that each described detection grid is corresponding and accurate interfered cell is determined according to described multiple Reference Signal Received Power;

Judge the isotype interference relationships in minizone, and calculate the isotype probability of interference of the first community at detection grid place by the second community; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely;

For each community, calculate the multiple detection grid places of the first community as accurate Serving cell by the isotype probability of interference sum of the second community, obtain the isotype probability of interference total amount of the first community by the second community;

Determine that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.

2. in LTE long-term evolving network according to claim 1 based on the signal optimizing method of area interference total amount, it is characterized in that, describedly determine that the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell comprise according to described multiple Reference Signal Received Power:

Calculate each community at the mean value detecting grid place Reference Signal Received Power, as each community in the average reference signal received power detecting grid place;

Calculate in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power; Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, determine that described difference is less than Second Threshold and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power being greater than described first threshold.

3. in LTE long-term evolving network according to claim 1 based on the signal optimizing method of area interference total amount, it is characterized in that, the isotype interference relationships in described judgement minizone, and calculate the first community detecting grid place and comprise by the isotype probability of interference of the second community:

At detection grid place, for each accurate Serving cell, judge to there is other accurate Serving cell of all kinds of isotype interference relationships and accurate interfered cell between accurate Serving cell; There is the interference of mould 50 relation in the interference that described all kinds of isotype interference relationships comprises same physical-layer cell identifier PCI disturbs, PCI exists the interference of mould 3 relation, PCI exists mould 6 relation interference, PCI exists mould 30 relation, PCI, PCI exists the interference of auxiliary synchronous signals SSS with m0 relation, and PCI exists the interference of SSS with m1 relation;

At detection grid place, calculate the isotype probability of interference that the first community is subject to the second community that there is with it isotype interference relationships; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

4. in LTE long-term evolving network according to claim 3 based on the signal optimizing method of area interference total amount, it is characterized in that, all kinds of isotype interference relationships existed between each accurate Serving cell of described judgement and other accurate Serving cell and accurate interfered cell comprises:

Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical with the PCI of this accurate Serving cell, if identical, determine that accurate Serving cell exists with PCI interference relationships with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 3 deliverys and this be identical to the result of 3 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 3 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 6 deliverys and this be identical to the result of 6 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 6 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 30 deliverys and this be identical to the result of 30 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 30 relation with this;

Judge that whether the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 50 deliverys and this be identical to the result of 50 deliverys, if identical, determine that accurate Serving cell exists the interference of PCI mould 50 relation with this;

Judge that whether the m0 of the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical with the m0 of the PCI auxiliary synchronous signals SSS of this accurate Serving cell, if identical, determine that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m0 relation with this;

Judge that whether the m1 of the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical with the m1 of the PCI auxiliary synchronous signals SSS of this accurate Serving cell, if identical, determine that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m1 relation with this.

5. in LTE long-term evolving network according to claim 3 based on the signal optimizing method of area interference total amount, it is characterized in that, calculate at detection grid (log _p, lat _p) place first community A is to the isotype probability of interference C of the second community B that there is with it isotype interference relationships ^s _aB(log _p, lat _p) method be:

${C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)=\frac{1}{1+e^{-0.357+0.248\×[C_A({\log }_p,{\mathrm{lat}}_p)/I_B({\log }_p,{\mathrm{lat}}_p)]}}$

Calculate the multiple detection grid places of the first community A as accurate Serving cell by the isotype probability of interference sum of the second community B, obtain the isotype probability of interference total amount C of the first community A by the second community B ^s _aBmethod be:

${C^s}_{\mathrm{AB}}=\frac{\underset{n}{\mathrm{\Σ}}{C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)\×M_{\mathrm{AB},n}}{\underset{n}{\mathrm{\Σ}}{M}_{\mathrm{AB},n}}$

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B, C _a(log _p, lat _p) for community A is at detection grid (log _p, lat _p) the average reference signal received power at place, I _bfor community B is at detection grid (log _p, lat _p) the average reference signal received power at place, log _pfor detecting grid longitude; lat _pfor detecting grid dimension values; M _{aB, n}it is the number of times that the first community A is detected at the Reference Signal Received Power that n is detected grid place second community B.

6. in LTE long-term evolving network according to claim 1 based on the signal optimizing method of area interference total amount, it is characterized in that, specifically from LTE frequency sweep data, LTE drive test data and/or MR measurement report data, obtain multiple Reference Signal Received Power.

7. in LTE long-term evolving network based on a signal optimizing system for area interference total amount, it is characterized in that, described system comprises:

Acquisition module, for for each detection grid, obtains multiple Reference Signal Received Power;

Cell type determination module, for determining the accurate Serving cell that each described detection grid is corresponding and accurate interfered cell according to described multiple Reference Signal Received Power;

Grid is isotype probability of interference computing module, for judging the isotype interference relationships in minizone, and calculates the first community and is detecting the isotype probability of interference of grid place by the second community; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely;

Community is isotype probability of interference computing module, for for each community, calculates the multiple detection grid places of the first community as accurate Serving cell by the isotype probability of interference sum of the second community, obtains the isotype probability of interference total amount of the first community by the second community;

Location, problem cells and analysis module, for determining that the Liang Ge community that the two isotype probability of interference total amounts in minizone are greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.

8. in LTE long-term evolving network according to claim 7 based on the signal optimizing system of area interference total amount, it is characterized in that, described cell type determination module comprises:

Average reference signal received power computing unit, for calculating each community at the mean value detecting grid place Reference Signal Received Power, as each community in the average reference signal received power detecting grid place;

Cell type computing unit, for calculating in the difference detecting grid Chu Ge community average reference signal received power and maximum average reference signal received power; Determine that the Serving cell that is as the criterion is determined in the community corresponding to average reference signal received power that described difference is less than first threshold, determine that described difference is less than Second Threshold and the interfered cell that is as the criterion is determined in the community corresponding to average reference signal received power being greater than described first threshold.

9. in LTE long-term evolving network according to claim 7 based on the signal optimizing system of area interference total amount, it is characterized in that, described grid is isotype, and probability of interference computing module comprises:

Isotype interference type judging unit, at detection grid place, for each accurate Serving cell, judges to there is other accurate Serving cell of all kinds of isotype interference relationships and accurate interfered cell between accurate Serving cell; There is the interference of mould 50 relation in the interference that described all kinds of isotype interference relationships comprises same physical-layer cell identifier PCI disturbs, PCI exists the interference of mould 3 relation, PCI exists mould 6 relation interference, PCI exists mould 30 relation, PCI, PCI exists the interference of auxiliary synchronous signals SSS with m0 relation, and PCI exists the interference of SSS with m1 relation;

Isotype probability of interference computing unit, at detection grid place, calculates the isotype probability of interference that the first community is subject to the second community that there is with it isotype interference relationships; Described first community is the Serving cell surely at this detection grid place; Described second community is other accurate Serving cell except the first community or interfered cell surely.

10. in LTE long-term evolving network according to claim 9 based on the signal optimizing system of area interference total amount, it is characterized in that,

Described isotype interference type judging unit comprises:

With PCI interference relationships judgment sub-unit, whether the PCI for the PCI with this accurate Serving cell that judge other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists with PCI interference relationships with this;

PCI mould 3 interference relationships judgment sub-unit, whether identical to the result of 3 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 3 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 3 relation with this;

PCI mould 6 interference relationships judgment sub-unit, whether identical to the result of 6 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 6 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 6 relation with this;

PCI mould 30 interference relationships judgment sub-unit, whether identical to the result of 30 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 30 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 30 relation with this;

PCI mould 50 interference relationships judgment sub-unit, whether identical to the result of 50 deliverys for judging the PCI of the PCI of other accurate Serving cell and accurate interfered cell to the accurate Serving cell of the result of 50 deliverys and this, if identical, determine that accurate Serving cell exists the interference of PCI mould 50 relation with this;

The SSS of PCI is with m0 interference relationships judgment sub-unit, whether the m0 for the PCI auxiliary synchronous signals SSS of the m0 with this accurate Serving cell that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m0 relation with this;

The SSS of PCI is with m1 interference relationships judgment sub-unit, whether the m1 for the PCI auxiliary synchronous signals SSS of the m1 with this accurate Serving cell that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines that accurate Serving cell exists the interference of PCI auxiliary synchronous signals SSS with m1 relation with this;

Described isotype probability of interference computing unit calculates at detection grid (log _p, lat _p) place first community A is to the isotype probability of interference C of the second community B that there is with it isotype interference relationships ^s _aB(log _p, lat _p) formula be:

${C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)=\frac{1}{1+e^{-0.357+0.248\×[C_A({\log }_p,{\mathrm{lat}}_p)/I_B({\log }_p,{\mathrm{lat}}_p)]}}$

Described community is isotype, and probability of interference computing module calculates the multiple detection grid places of the first community A as accurate Serving cell by the isotype probability of interference sum of the second community B, obtains the isotype probability of interference total amount C of the first community A by the second community B ^s _aBformula be:

${C^s}_{\mathrm{AB}}=\frac{\underset{n}{\mathrm{\Σ}}{C^s}_{\mathrm{AB}}({\log }_p,{\mathrm{lat}}_p)\×M_{\mathrm{AB},n}}{\underset{n}{\mathrm{\Σ}}{M}_{\mathrm{AB},n}}$

Wherein, there is n to detect grid in the detection grid that the first community A covers as accurate Serving cell and be subject to the isotype interference of the second community B, C _a(log _p, lat _p) for community A is at detection grid (log _p, lat _p) the average reference signal received power at place, I _bfor community B is at detection grid (log _p, lat _p) the average reference signal received power at place, log _pfor detecting grid longitude; lat _pfor detecting grid dimension values; M _{aB, n}it is the number of times that the first community A is detected at the Reference Signal Received Power that n is detected grid place second community B.