CN105338546A - Defective cell positioning method and system for LTE network - Google Patents
Defective cell positioning method and system for LTE network Download PDFInfo
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Abstract
The invention discloses a defective cell positioning method and system for an LTE network and belongs to the mobile communication technical field. The method includes the following steps that: the grids of a certain cell which are adopted as grids of a quasi serving cell, are adopted as serving grids; grids in the serving grids are selected and adopted as common mode interference grids, the total probability of common mode interference exerted on the grids in the serving grids is high, namely, the total probability of common mode interference exerted on the grids of the first cell by other quasi serving cells and quasi interference cells is higher than a preset value; if the ratio of the number of the common mode interference grids to the number of the serving cells is higher than an interference threshold value, it is indicated that many grids which are subjected to serious common mode interference exist in the grids of a certain cell which are adopted as the grids of the quasi serving cell, and therefore, the cell can be determined as a cell which is subjected to serious common mode interference, namely, the cell can be positioned as a defective cell. With the method and system of the invention adopted, accurate basis can be provided for accurate analysis of interference condition of the LTE network, and targeted signal optimization and adjustment can be accurately performed on cells of which the overall severity of common mode interference is high.
Description
Technical field
The present invention relates to mobile communication technology field, particularly the localization method of problem cells and system in a kind of LTE long-term evolving network.
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, especially the precise positioning for problem cells (i.e. the community of serious interference) is furtherd investigate, it is the basis obtaining optimal solution more accurately, direct decision LTE network signal and performance, 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 localization method and the system of problem cells in a kind of LTE long-term evolving network, propose a kind of new problem community quantitative analysis tech, thus can realize carrying out more accurately, reasonably adjusting to network signal, 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 localization method of problem cells 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;
Using the first community as the grid of accurate Serving cell as the service grid of the first community; Described first community is the Serving cell surely at this detection grid place;
Judge in each service grid, the first community is greater than the grid of preset value, as the isotype interference grid of the first community by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell;
For each community, judge whether isotype interference grid quantity is greater than interference threshold with the accounting of service grid quantity; Determine that the community that described accounting is 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.
In each service grid of described judgement, the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, and the isotype interference grid as the first community comprises:
At each service grid place, judge whether there is isotype interference relationships between the first community and other accurate Serving cell and accurate interfered cell; There is the interference of mould 50 relation in the interference that described 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;
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 second community is other accurate Serving cell except the first community or interfered cell surely;
Calculate the first community by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell, obtain the isotype probability of interference total amount that the first community is subject to other accurate Serving cell and accurate interfered cell;
First community is greater than the service grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, as the isotype interference grid of the first community.
Describedly judge that whether there is isotype interference relationships between the first community 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 the first community, if identical, determine to exist with PCI interference relationships with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 3 deliverys with the PCI of the first community to the result of 3 deliverys, if identical, determine the interference that there is PCI mould 3 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 6 deliverys with the PCI of the first community to the result of 6 deliverys, if identical, determine the interference that there is PCI mould 6 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 30 deliverys with the PCI of the first community to the result of 30 deliverys, if identical, determine the interference that there is PCI mould 30 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 50 deliverys with the PCI of the first community to the result of 50 deliverys, if identical, determine the interference that there is PCI mould 50 relation with the first community;
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 the first community, if identical, determine to there is the interference of PCI auxiliary synchronous signals SSS with m0 relation with the first community;
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 the first community, if identical, determine to there is the interference of PCI auxiliary synchronous signals SSS with m1 relation with the first community.
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:
Wherein, 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.
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 navigation system of problem cells 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;
Service grid determination module, for using the first community as the grid of accurate Serving cell as the service grid of the first community; Described first community is the Serving cell surely at this detection grid place;
Isotype interference grid determination module, for judging in each service grid, the first community is greater than the grid of preset value, as the isotype interference grid of the first community by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell;
Location, problem cells and analysis module, for for each community, judge whether isotype interference grid quantity is greater than interference threshold with the accounting of service grid quantity; Determine that the community that described accounting is 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 isotype interference grid determination module comprises:
Isotype interference type judging unit, at each service grid place, judges whether there is isotype interference relationships between the first community and other accurate Serving cell and accurate interfered cell; There is the interference of mould 50 relation in the interference that described 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, is subject to the isotype probability of interference of the second community that there is with it isotype interference relationships for calculating the first community; Described second community is other accurate Serving cell except the first community or interfered cell surely;
Isotype probability of interference total amount calculating unit, for calculating the first community by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell, obtains the isotype probability of interference total amount that the first community is subject to other accurate Serving cell and accurate interfered cell;
Isotype interference grid determining unit, for the first community to be greater than the service grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, as the isotype interference grid of the first community.
Described isotype interference type judging unit comprises:
With PCI interference relationships judgment sub-unit, whether the PCI for the PCI with the first community that judge other accurate Serving cell and accurate interfered cell is identical, if identical, determines to exist with PCI interference relationships with the first community;
PCI mould 3 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 3 deliverys with the PCI of the first community to the result of 3 deliverys, if identical, determines the interference that there is PCI mould 3 relation with the first community;
PCI mould 6 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 6 deliverys with the PCI of the first community to the result of 6 deliverys, if identical, determines the interference that there is PCI mould 6 relation with the first community;
PCI mould 30 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 30 deliverys with the PCI of the first community to the result of 30 deliverys, if identical, determine the interference that there is PCI mould 30 relation with the first community;
PCI mould 50 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 50 deliverys with the PCI of the first community to the result of 50 deliverys, if identical, determine the interference that there is PCI mould 50 relation with the first community;
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 the first community that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines to there is the interference of PCI auxiliary synchronous signals SSS with m0 relation with the first community;
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 the first community that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines to there is the interference of PCI auxiliary synchronous signals SSS with m1 relation with the first community;
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:
Wherein, 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.
Visible, the embodiment of the present invention provides localization method and the system of problem cells in a kind of LTE long-term evolving network, first determine that the grid of certain community as accurate Serving cell is as service grid, in these service grids, judge that this community is subject to the comparatively serious grid of isotype probability of interference total amount (namely the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell) again, as isotype interference grid, if the accounting of isotype interference grid quantity and service grid is higher than interference threshold, then illustrate for certain community, in its grid as accurate Serving cell, the grid being subject to isotype serious interference is more, thus can determine that this community is the comparatively serious community of isotype interference, namely problem cells is located as.Scheme according to the embodiment of the present invention, can precise quantification orientation problem community, thus provide accurate foundation for Accurate Analysis goes out LTE network disturbance regime, make it possible to community serious to isotype interference overall degree accurately and carry out signal optimizing and adjustment targetedly.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
The localization method flow chart of problem cells 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;
The positioning system structure block diagram of problem cells 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 localization method of problem cells 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, in order to convenience of calculation, can ignore.
S103: using the first community as the grid of accurate Serving cell as the service grid of the first community; Described first community is the Serving cell surely at this detection grid place.
This step, for determining the grid using certain community as accurate Serving cell, is designated as the service grid of this community.
S104: judge in each service grid, the first community is greater than the grid of preset value, as the isotype interference grid of the first community by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell.
This step is used for judging in these service grids that the first community is subject to the comparatively serious grid of isotype probability of interference total amount (namely the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell), it can be used as isotype interference grid.
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, judge in each service grid, the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, and the isotype interference grid as the first community comprises following sub-step:
Sub-step 1: at each service grid place, judges whether there is isotype interference relationships between the first community and other accurate Serving cell and accurate interfered 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, describedly judge that whether there is isotype interference relationships between the first community 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 the first community, if identical, determine to exist with PCI interference relationships with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 3 deliverys with the PCI of the first community to the result of 3 deliverys, if identical, determine the interference that there is PCI mould 3 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 6 deliverys with the PCI of the first community to the result of 6 deliverys, if identical, determine the interference that there is PCI mould 6 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 30 deliverys with the PCI of the first community to the result of 30 deliverys, if identical, determine the interference that there is PCI mould 30 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 50 deliverys with the PCI of the first community to the result of 50 deliverys, if identical, determine the interference that there is PCI mould 50 relation with the first community;
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 the first community, if identical, determine to there is the interference of PCI auxiliary synchronous signals SSS with m0 relation with the first community;
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 the first community, if identical, determine to there is the interference of PCI auxiliary synchronous signals SSS with m1 relation with the first community.
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: 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 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 the first community A comprises { B ... C}, other the accurate interfered cell that there is isotype interference relationships with the first community A comprises { D, E ... T}.Then, the first community 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 the second community B) of there is with it isotype interference relationships
s aB(log
p, lat
p) a kind of method can be:
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, 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:
Wherein:
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.
Sub-step 3: calculate the first community by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell, obtains the isotype probability of interference total amount that the first community is subject to other accurate Serving cell and accurate interfered cell.
Continue to use above-mentioned example: at certain grid place, other the accurate Serving cell that there is isotype interference relationships with the first community A comprises { B ... C}, other the accurate interfered cell that there is isotype interference relationships with the first community A comprises { D, E ... T}.
Then grid (log
p, lat
p) community, place first is by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell:
C
S AB(log
p,lat
p)+…+C
S AC(log
p,lat
p)+C
S AD(log
p,lat
p)+C
S AE(log
p,lat
p)+…+C
S AT(log
p,lat
p)
Sub-step 4: the service grid the first community being greater than preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, as the isotype interference grid of the first community.
The isotype probability of interference total amount that certain community is subject to is larger, then illustrate that the interference that this community is subject to is more serious.
Preset value can according to different application scene setting, and this preset value is lower, then illustrate current application scene to annoyance level require stricter, such as can arrange this preset value is 0.1.
S105: for each community, judges whether isotype interference grid quantity is greater than interference threshold with the accounting of service grid quantity, determines that the community that described accounting is greater than interference threshold is problem cells, carries out the Optimization and tuning of signal according to the problem cells determined.
Illustrate, for the A of community, its grid quantity as accurate Serving cell has 500, in these 500 grids, it is 200 that community A is subject to the grid quantity that isotype probability of interference total amount is greater than preset value (such as 0.1), then calculate 200/500 and whether be greater than interference threshold (such as 15%), if be greater than, then determine that community A is problem cells, otherwise determine that community A is not problem cells.
Certain community as accurate Serving cell grid as service grid, in these service grids, judge that this community is subject to the comparatively serious grid of isotype probability of interference total amount (namely the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell) again, as isotype interference grid, if the accounting of isotype interference grid quantity and service grid is higher than interference threshold, then illustrate for certain community, in its grid as accurate Serving cell, the grid being subject to isotype serious interference is more, thus can determine that this community is the comparatively serious community of isotype interference, namely problem cells is located as.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 localization method of problem cells in a kind of LTE long-term evolving network, first determine that the grid of certain community as accurate Serving cell is as service grid, in these service grids, judge that this community is subject to the comparatively serious grid of isotype probability of interference total amount (namely the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell) again, as isotype interference grid, if the accounting of isotype interference grid quantity and service grid is higher than interference threshold, then illustrate for certain community, in its grid as accurate Serving cell, the grid being subject to isotype serious interference is more, thus can determine that this community is the comparatively serious community of isotype interference, namely problem cells is located as.Scheme according to the embodiment of the present invention, can precise quantification orientation problem community, thus provide accurate foundation for Accurate Analysis goes out LTE network disturbance regime, make it possible to community serious to isotype interference overall degree accurately and carry out signal optimizing and adjustment targetedly.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.
Shown in Figure 3, the embodiment of the present invention additionally provides the navigation system of problem cells 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.
Service grid determination module 303, for using the first community as the grid of accurate Serving cell as the service grid of the first community; Described first community is the Serving cell surely at this detection grid place.
Isotype interference grid determination module 304, for judging in each service grid, the first community is greater than the grid of preset value, as the isotype interference grid of the first community by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell.
Location, problem cells and analysis module 305, for for each community, judge whether isotype interference grid quantity is greater than interference threshold with the accounting of service grid quantity; Determine that the community that described accounting is greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.
Concrete, 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.
As preferably, described isotype interference grid determination module comprises:
Isotype interference type judging unit, at each service grid place, judges whether there is isotype interference relationships between the first community and other accurate Serving cell and accurate interfered cell; There is the interference of mould 50 relation in the interference that described 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, is subject to the isotype probability of interference of the second community that there is with it isotype interference relationships for calculating the first community; Described second community is other accurate Serving cell except the first community or interfered cell surely;
Isotype probability of interference total amount calculating unit, for calculating the first community by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell, obtains the isotype probability of interference total amount that the first community is subject to other accurate Serving cell and accurate interfered cell;
Isotype interference grid determining unit, for the first community to be greater than the service grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, as the isotype interference grid of the first community.
Further, described isotype interference type judging unit comprises:
With PCI interference relationships judgment sub-unit, whether the PCI for the PCI with the first community that judge other accurate Serving cell and accurate interfered cell is identical, if identical, determines to exist with PCI interference relationships with the first community;
PCI mould 3 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 3 deliverys with the PCI of the first community to the result of 3 deliverys, if identical, determines the interference that there is PCI mould 3 relation with the first community;
PCI mould 6 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 6 deliverys with the PCI of the first community to the result of 6 deliverys, if identical, determines the interference that there is PCI mould 6 relation with the first community;
PCI mould 30 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 30 deliverys with the PCI of the first community to the result of 30 deliverys, if identical, determine the interference that there is PCI mould 30 relation with the first community;
PCI mould 50 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 50 deliverys with the PCI of the first community to the result of 50 deliverys, if identical, determine the interference that there is PCI mould 50 relation with the first community;
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 the first community that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines to there is the interference of PCI auxiliary synchronous signals SSS with m0 relation with the first community;
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 the first community that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines to there is the interference of PCI auxiliary synchronous signals SSS with m1 relation with the first community.
Preferably, 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:
Wherein, 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.
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 navigation system of problem cells in a kind of LTE long-term evolving network, first determine that the grid of certain community as accurate Serving cell is as service grid, in these service grids, judge that this community is subject to the comparatively serious grid of isotype probability of interference total amount (namely the first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell) again, as isotype interference grid, if the accounting of isotype interference grid quantity and service grid is higher than interference threshold, then illustrate for certain community, in its grid as accurate Serving cell, the grid being subject to isotype serious interference is more, thus can determine that this community is the comparatively serious community of isotype interference, namely problem cells is located as.Scheme according to the embodiment of the present invention, can precise quantification orientation problem community, thus provide accurate foundation for Accurate Analysis goes out LTE network disturbance regime, make it possible to community serious to isotype interference overall degree accurately and carry out signal optimizing and adjustment targetedly.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.
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. the localization method of problem cells in LTE long-term evolving network, 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;
Using the first community as the grid of accurate Serving cell as the service grid of the first community; Described first community is the Serving cell surely at this detection grid place;
Judge in each service grid, the first community is greater than the grid of preset value, as the isotype interference grid of the first community by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell;
For each community, judge whether isotype interference grid quantity is greater than interference threshold with the accounting of service grid quantity; Determine that the community that described accounting is greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.
2. the localization method of problem cells in LTE long-term evolving network according to claim 1, is characterized in that, describedly determines 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. the localization method of problem cells in LTE long-term evolving network according to claim 1, it is characterized in that, in each service grid of described judgement, first community is greater than the grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, and the isotype interference grid as the first community comprises:
At each service grid place, judge whether there is isotype interference relationships between the first community and other accurate Serving cell and accurate interfered cell; There is the interference of mould 50 relation in the interference that described 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;
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 second community is other accurate Serving cell except the first community or interfered cell surely;
Calculate the first community by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell, obtain the isotype probability of interference total amount that the first community is subject to other accurate Serving cell and accurate interfered cell;
First community is greater than the service grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, as the isotype interference grid of the first community.
4. the localization method of problem cells in LTE long-term evolving network according to claim 3, is characterized in that, describedly judges that whether there is isotype interference relationships between the first community 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 the first community, if identical, determine to exist with PCI interference relationships with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 3 deliverys with the PCI of the first community to the result of 3 deliverys, if identical, determine the interference that there is PCI mould 3 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 6 deliverys with the PCI of the first community to the result of 6 deliverys, if identical, determine the interference that there is PCI mould 6 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 30 deliverys with the PCI of the first community to the result of 30 deliverys, if identical, determine the interference that there is PCI mould 30 relation with the first community;
Judge that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 50 deliverys with the PCI of the first community to the result of 50 deliverys, if identical, determine the interference that there is PCI mould 50 relation with the first community;
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 the first community, if identical, determine to there is the interference of PCI auxiliary synchronous signals SSS with m0 relation with the first community;
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 the first community, if identical, determine to there is the interference of PCI auxiliary synchronous signals SSS with m1 relation with the first community.
5. the localization method of problem cells in LTE long-term evolving network according to claim 3, is characterized in that, 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) method be:
Wherein, 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.
6. the localization method of problem cells in LTE long-term evolving network according to claim 1, 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. the navigation system of problem cells in LTE long-term evolving network, 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;
Service grid determination module, for using the first community as the grid of accurate Serving cell as the service grid of the first community; Described first community is the Serving cell surely at this detection grid place;
Isotype interference grid determination module, for judging in each service grid, the first community is greater than the grid of preset value, as the isotype interference grid of the first community by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell;
Location, problem cells and analysis module, for for each community, judge whether isotype interference grid quantity is greater than interference threshold with the accounting of service grid quantity; Determine that the community that described accounting is greater than interference threshold is problem cells, carry out the Optimization and tuning of signal according to the problem cells determined.
8. the navigation system of problem cells in LTE long-term evolving network according to claim 7, 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. the navigation system of problem cells in LTE long-term evolving network according to claim 7, it is characterized in that, described isotype interference grid determination module comprises:
Isotype interference type judging unit, at each service grid place, judges whether there is isotype interference relationships between the first community and other accurate Serving cell and accurate interfered cell; There is the interference of mould 50 relation in the interference that described 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, is subject to the isotype probability of interference of the second community that there is with it isotype interference relationships for calculating the first community; Described second community is other accurate Serving cell except the first community or interfered cell surely;
Isotype probability of interference total amount calculating unit, for calculating the first community by the isotype probability of interference sum in other accurate Serving cell and accurate interfered cell, obtains the isotype probability of interference total amount that the first community is subject to other accurate Serving cell and accurate interfered cell;
Isotype interference grid determining unit, for the first community to be greater than the service grid of preset value by the isotype probability of interference total amount of other accurate Serving cell and accurate interfered cell, as the isotype interference grid of the first community.
10. the navigation system of problem cells in LTE long-term evolving network according to claim 9, 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 the first community that judge other accurate Serving cell and accurate interfered cell is identical, if identical, determines to exist with PCI interference relationships with the first community;
PCI mould 3 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 3 deliverys with the PCI of the first community to the result of 3 deliverys, if identical, determines the interference that there is PCI mould 3 relation with the first community;
PCI mould 6 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 6 deliverys with the PCI of the first community to the result of 6 deliverys, if identical, determines the interference that there is PCI mould 6 relation with the first community;
PCI mould 30 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 30 deliverys with the PCI of the first community to the result of 30 deliverys, if identical, determine the interference that there is PCI mould 30 relation with the first community;
PCI mould 50 interference relationships judgment sub-unit, for judging that whether the PCI of other accurate Serving cell and accurate interfered cell is identical to the result of 50 deliverys with the PCI of the first community to the result of 50 deliverys, if identical, determine the interference that there is PCI mould 50 relation with the first community;
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 the first community that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines to there is the interference of PCI auxiliary synchronous signals SSS with m0 relation with the first community;
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 the first community that judge the PCI auxiliary synchronous signals SSS of other accurate Serving cell and accurate interfered cell is identical, if identical, determines to there is the interference of PCI auxiliary synchronous signals SSS with m1 relation with the first community;
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:
Wherein, 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.
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