CN108668285B - PCI planning method and device - Google Patents
PCI planning method and device Download PDFInfo
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- CN108668285B CN108668285B CN201710209883.0A CN201710209883A CN108668285B CN 108668285 B CN108668285 B CN 108668285B CN 201710209883 A CN201710209883 A CN 201710209883A CN 108668285 B CN108668285 B CN 108668285B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
Abstract
The embodiment of the invention provides a PCI planning method and a device. The method comprises the following steps: acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned; acquiring a common-frequency base station of a base station to be planned in a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to a first preset rule; acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the direction angle of each cell; and respectively calculating the distances between the same-frequency base station corresponding to the PCIs included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCIs corresponding to the same-frequency base station with the largest distance as the target PCIs of each cell of the base station to be planned. The device is used for executing the method. The method and the device provided by the invention improve the PCI planning efficiency of the newly added base station.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a PCI planning method and a device.
Background
With the rapid development of communication technology, the number of LTE base stations is increasing, and the requirement of people for communication quality is also increasing, and more attention is paid to the problem of Physical Cell Identity (PCI) planning of newly added base stations.
The purpose of Physical Cell Identity (PCI) planning is to reasonably allocate PCIs to each Cell of a base station, ensure that downlink signals of cells with the same frequency and the same PCI do not interfere with each other, and avoid affecting the correct synchronization of a mobile phone and decoding a pilot channel of a normal service Cell. Under the prior art, the PCI deployment planning of the newly added base station is usually implemented by allocating the PCI to each cell by using an offline planning tool or manually by using some basic information (such as cell position, potential neighboring cells, etc.) in the drive test data and the current network data map, and avoiding the interference of PCI modulo 3, modulo 6, and modulo 30. However, the PCI interference data obtained by using the test data has contingency and complex flow, and PCI cannot be optimally output due to incomplete acquisition of the PCI interference data, so that the efficiency of PCI planning for a newly added base station is low.
Therefore, how to provide a method to improve the efficiency of PCI planning for the newly added base station is an urgent issue to be solved in the industry.
Disclosure of Invention
In order to overcome the defects in the prior art, embodiments of the present invention provide a PCI planning method and apparatus.
In one aspect, an embodiment of the present invention provides a PCI planning method, including:
acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned;
acquiring a common-frequency base station of the base station to be planned within a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to the common-frequency base station and the base station to be planned and a first preset rule;
acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angle of each cell;
and respectively calculating the distances between the co-frequency base station corresponding to the PCI included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCI corresponding to the co-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned.
In another aspect, an embodiment of the present invention provides a PCI planning apparatus, including:
the first acquisition unit is used for acquiring the frequency point, the longitude and latitude and the direction angle of each cell of the base station to be planned;
the second obtaining unit is used for obtaining a same-frequency base station of the base station to be planned in a preset area range according to the frequency point, and obtaining a target Delaunay triangulation network with the base station to be planned as a center angular point according to the same-frequency base station and the base station to be planned and a first preset rule;
a third obtaining unit, configured to obtain, according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned, and the corresponding direction angle of each cell, a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule;
and the processing unit is used for respectively calculating the distances between the co-frequency base stations corresponding to the PCIs included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCIs corresponding to the co-frequency base stations with the largest distances as the target PCIs of each cell of the base station to be planned.
According to the PCI planning method and device provided by the embodiment of the invention, the co-frequency base station of the base station to be planned in the preset area range is obtained according to the frequency point, the longitude and latitude of a target Delaunay triangulation network taking the base station to be planned as a center angle point and the direction angle of each corresponding cell are obtained according to a first preset rule, the target PCI to be selected of each cell of the base station to be planned is obtained according to a second preset rule, the distance between the co-frequency base station corresponding to the PCI included in the target PCI to be selected set of each cell of the base station to be planned and the base station to be planned is respectively calculated, and the PCI corresponding to the co-frequency base station with the largest distance is respectively used as the target PCI of each cell of the base station to be planned, so that the PCI planning efficiency of the newly added base station is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a PCI planning method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a Delaunay triangulation network according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a newly added base station and a partial co-frequency base station thereof according to an embodiment of the present invention;
fig. 4 is a schematic overall flow chart of a PCI planning method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a PCI planning apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a PCI planning apparatus according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of an entity apparatus of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic flow chart of a PCI planning method according to an embodiment of the present invention, and as shown in fig. 1, the embodiment provides a PCI planning method including:
s101, acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned;
specifically, the PCI planning apparatus obtains a frequency point, a longitude and latitude, and a direction angle of each cell of a base station to be planned. The base station to be planned can be a newly added base station, the frequency point is a main frequency point of the base station to be planned, and each cell is a cell covered by the base station to be planned, and is generally 3.
S102, acquiring a co-frequency base station of the base station to be planned in a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to the co-frequency base station and the base station to be planned and a first preset rule;
specifically, the device acquires a base station having the same frequency point as the base station to be planned within a preset area range with the base station to be planned as a center, that is, a co-frequency base station of the cell to be planned. The device generates a Delaunay triangulation network with the base station to be planned as a center corner point according to the common-frequency base station and the base station to be planned, and counts the number of the common-frequency base stations layer by layer from the base station to be planned outwards on the Delaunay triangulation network until the total number of the common-frequency base stations is larger than a preset threshold value, so as to obtain the target Delaunay triangulation network. Of course, the device may also obtain the target Delaunay triangulation network in other manners, and may specifically be adjusted according to an actual situation, which is not specifically limited herein.
S103, acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and the latitude of the base station to be planned and the corresponding direction angle of each cell;
specifically, the apparatus acquires a set of PCIs corresponding to each cell of each co-frequency base station included in the target Delaunay triangulation network, as an alternative PCI set; then, the device eliminates interference of a module 3, a module 6 and a module 30 in the candidate PCI set according to a second preset rule, and obtains a set composed of target candidate PCIs of each cell of the base station to be planned, that is, the target candidate PCI set.
S104, respectively calculating the distances between the co-frequency base stations corresponding to the PCIs included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCIs corresponding to the co-frequency base stations with the largest distances as the target PCIs of each cell of the base station to be planned.
Specifically, the device respectively obtains PCIs included in a target to-be-selected PCI set of each cell of the base station to be planned, searches for the co-frequency base station corresponding to each PCI, obtains the longitude and latitude of the co-frequency base station corresponding to each PCI, calculates the distance between the co-frequency base station corresponding to each PCI and the base station to be planned according to the longitude and latitude of the co-frequency base station corresponding to each PCI and the longitude and latitude of the base station to be planned, and takes the PCI corresponding to the co-frequency base station farthest from the base station to be planned as the target PCI of the corresponding cell of the base station to be planned. For example, the base station to be planned is N0The 3 covered cells are respectively A cell, B cell and C cell, the target PCI set to be selected of the A cell is { p }1，p2，p3The device looks for p separately1，p2，p3The corresponding base stations are respectively N1，N2，N3Then the device calculates the base station N to be planned respectively0And the base station N1，N2，N3Is a distance S1，S2，S3And S is1＞S2＞S3The device determines to communicate with the base station N1Corresponding PCI (i.e. p)1) The target PCI is used as the cell of the base station A to be planned; and the device respectively acquires the target PCIs of the cell B and the cell C of the base station to be planned by the same method, namely finishing the PCI planning of the base station to be planned.
According to the PCI planning method provided by the embodiment of the invention, the common-frequency base station of the base station to be planned in the preset area range is obtained according to the frequency point, the longitude and the latitude of the target Delaunay triangulation network taking the base station to be planned as the center angular point and the direction angle of each corresponding cell are obtained according to the first preset rule, the target PCI to be selected of each cell of the base station to be planned is obtained according to the second preset rule, the distances between the common-frequency base station corresponding to the PCI included in the target PCI to be selected set of each cell of the base station to be planned and the base station to be planned are respectively calculated, and the PCI corresponding to the common-frequency base station with the largest distance is respectively used as the target PCI of each cell of the base station to be planned, so that the PCI planning efficiency of the newly added base station is improved.
On the basis of the foregoing embodiment, further, the obtaining, according to the co-frequency base station and the base station to be planned, a target Delaunay triangulation network with the base station to be planned as a center point according to a first preset rule includes:
generating a Delaunay triangulation network with the base station to be planned as a center corner point according to the co-frequency base station and the base station to be planned;
and on the Delaunay triangulation network, counting the number of the same-frequency base stations layer by layer from the base station to be planned outwards until the total number of the same-frequency base stations is greater than a preset threshold value, and obtaining the target Delaunay triangulation network.
Specifically, the device generates a Delaunay triangulation network with the base station to be planned as a center corner point according to the acquired common-frequency base stations and the base station to be planned within the preset area range, counts the number of the common-frequency base stations layer by layer outwards from the base station to be planned on the Delaunay triangulation network, accumulates the number of the common-frequency base stations on each layer, and stops until the total number of the common-frequency base stations is greater than a preset threshold value, so as to obtain the target Delaunay triangulation network. It is understood that the preset threshold may be set to 168; the preset area range may be a circular area range with the base station to be planned as a circle center and with a radius of 5 kilometers, and may be specifically adjusted according to an actual situation, which is not specifically limited herein.
For example, fig. 2 is a schematic diagram of a Delaunay triangulation network according to an embodiment of the present invention, and as shown in fig. 2, a newly added base station 201 is a center corner point, and corner points on each layer from inside to outside starting with the newly added base station 201 are the same-frequency base stations 202. The device calculates the number of the same-frequency base stations 202 in the first layer to be 7, and then the total number of the same-frequency base stations 202 is calculated to be m-7; if m is less than 168, continuing to calculate the number of the co-frequency base stations 202 in the second layer to be 13, and updating m to be 7+13 to be 20; sequentially performing law estimation until the nth layer, and if m is just 168, taking n layers of the Delaunay triangulation network from inside to outside with the newly added base station 201 as a center corner point as the target Delaunay triangulation network; or, when the number m is greater than 168 and stops at the nth layer, taking n-1 layers of the Delaunay triangulation network from inside to outside by taking the newly added base station 201 as a center corner point as the target Delaunay triangulation network.
On the basis of the foregoing embodiment, further, the obtaining, according to the longitude and latitude of the target Delaunay triangulation network and the base station to be planned and the corresponding direction angle of each cell, the target PCI set to be selected of each cell of the base station to be planned according to a second preset rule includes:
calculating influence factors of all cells of the base station to be planned according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angles of all the cells, and acquiring a first PCI set to be selected corresponding to all the cells of the base station to be planned according to the influence factors;
obtaining the PCI of each cell of each same-frequency base station on the outermost layer of the target Delaunay triangulation network as a second PCI set to be selected;
obtaining the PCI of each cell of each same-frequency base station in the innermost layer of the target Delaunay triangulation network as a third PCI set to be selected;
and acquiring the target PCI set to be selected corresponding to each cell of the base station to be planned according to the first PCI set to be selected, the second PCI set to be selected and the third PCI set to be selected.
Specifically, the device calculates an influence factor of each cell of the base station to be planned according to the longitude and latitude of the target Delaunay triangulation network and the base station to be planned and the corresponding direction angle of each cell, and sequentially acquires a first PCI set to be selected corresponding to each cell of the base station to be planned according to the descending order of the influence factor; then, the device acquires the PCI of each cell of each same-frequency base station on the outermost layer of the target Delaunay triangulation network as a second PCI set to be selected; finally, the device acquires the PCI of each cell of each same-frequency base station in the innermost layer of the target Delaunay triangulation network as a third PCI set to be selected; and finally, the device acquires the target PCI set to be selected corresponding to each cell of the base station to be planned according to the first PCI set to be selected, the second PCI set to be selected and the third PCI set to be selected corresponding to each cell of the base station to be planned.
On the basis of the foregoing embodiment, further, the calculating an influence factor of each cell of the base station to be planned according to the longitude and latitude of the target Delaunay triangulation network and the base station to be planned and the direction angle of each corresponding cell, and acquiring a first PCI set to be selected corresponding to each cell of the base station to be planned according to the influence factor includes:
acquiring longitude and latitude of the co-frequency base station at the innermost layer of the target Delaunay triangulation network and direction angles of all cells;
calculating influence factors of each cell of the base station to be planned according to the longitude and latitude of the co-frequency base station at the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned and the direction angle of each cell;
and sequentially eliminating the interference of the module 3 and the module 6 of each cell of the base station to be planned according to the sequence of the influence factors from large to small to obtain the first PCI set to be selected of each cell of the base station to be planned.
Specifically, the device acquires the longitude and latitude of each co-frequency base station at the innermost layer of the target Delaunay triangulation network and the direction angle of each cell thereof, and calculates the influence factor of each cell of the base station to be planned according to the longitude and latitude of the co-frequency base station at the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned and the direction angle of each cell; then, according to the sequence of the influence factors from large to small, the interference of the modulo 3 and the modulo 6 of each cell of the base station to be planned is sequentially eliminated, and the first PCI set to be selected of each cell of the base station to be planned is obtained.
For example, fig. 3 is a diagram of a newly added base station and a partially co-frequency base station thereof according to an embodiment of the present inventionIt is contemplated that, as shown in FIG. 3, the base station to be planned is N0The 3 cells covered by the method are respectively an A cell, a B cell and a C cell. Taking a cell a as an example, the device acquires a direction angle α of the cell a and longitude and latitude of the cell a.
Firstly, in the base station N to be planned0As a center, searching the intra-frequency base station in the innermost layer of the target Delaunay triangulation network within a sector range determined by respectively adding or subtracting 60 degrees to the A cell direction angle alpha, and assuming that the searched intra-frequency base station has X1、X2Two in total, and the same frequency base station X1The cells of (2) are respectively D, E, F, and the co-frequency base station X2Are O, P, Q respectively. Obtaining the same frequency base station X1、X2And the longitude and latitude and the direction angle of each cell, and according to the same-frequency base station X1、X2Latitude and longitude, direction angle of each cell and base station N to be planned0The longitude and latitude and the direction angle of each cell are calculated to obtain the same-frequency base station X1、X2And the base station N to be planned0Distances are respectively d1、d2The same frequency base station X1、X2And the base station N to be planned0The included angles of the connecting lines are respectively beta1、β2。
The device calculates the same frequency base stations X respectively1Cell D, E, F and the co-channel base station X2Cell O, P, Q of (a) to a cell. Using the same frequency base station X1For example, the device is configured to:
ID＝COS(β1)×COS(α-γD+180)/d1
calculating the influence factor of the cell D on the cell A, wherein IDIs the influence factor, beta, of the cell D on the cell A1For the same frequency base station X1And the base station N to be planned0Angle of connecting line, alpha is direction angle of the A cell, gammaDIs the direction angle of the cell D, D1For the same frequency base station X1And the base station N to be planned0Distance. Respectively calculating according to the same methodThe same frequency base station X1E, F and the co-channel base station X2Respectively, cell O, P, Q has an influence factor of I on cell AE、IF、IO、IP、IQ. And the devices respectively acquire the ID、IE、IFHas a maximum value of IESaid I isO、IP、IQHas a maximum value of IOThen the device calculates the impact factor of the A cell as IA＝IE+IO。
The device respectively calculates the base stations N to be planned by the same method0The other two cells B and C of (a) have an influence factor of IBAnd ICThe detailed process is not described herein. The device then measures the impact factor to obtain IA＞IB＞ICPreferentially calculating a first PCI set to be selected of the cell A, specifically: and rejecting PCIs with the same modulo 3 of the PCI corresponding to the cell E and PCIs with the same modulo 3 of the PCI corresponding to the cell O from the candidate PCI set, and rejecting PCIs with the same modulo 6 of the PCI corresponding to the cell E and PCIs with the same modulo 6 of the PCI corresponding to the cell O to obtain a first PCI set to be selected of the cell A. Then, the first candidate PCI set of the cell B and the first candidate PCI set of the cell C are sequentially calculated by the same method, and details of the specific process are not repeated here.
It should be noted that modulo 3 of the B cell and the C cell is different from the a cell; and if the A cell conflicts with the modulo 3 of the B cell and the C cell, the A cell with the highest influence factor is preferentially met.
On the basis of the foregoing embodiment, further, the obtaining the target PCI candidate set corresponding to each cell of the base station to be planned according to the first PCI candidate set, the second PCI candidate set, and the third PCI candidate set includes:
respectively acquiring an intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned to serve as a fourth PCI set to be selected of each cell of the base station to be planned;
and respectively eliminating the modulo 30 interference between the fourth PCI set to be selected of each cell of the base station to be planned and the third PCI set to be selected, and taking the obtained PCI set as the target PCI set to be selected of each cell of the base station to be planned.
Specifically, the device respectively obtains an intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned, and the intersection is used as a fourth PCI set to be selected of each cell of the base station to be planned; and respectively eliminating PCIs (physical cell identifiers) which are the same as the PCIs of the third to-be-selected PCI set modulo 30 from the fourth to-be-selected PCI set of each cell of the base station to be planned, eliminating the modulo 30 interference, and taking the obtained PCI set as the target to-be-selected PCI set of each cell of the base station to be planned.
For example, with continued reference to fig. 3, the base station to be planned is N0For example, if the first candidate PCI set of the 3 covered cells is { p }1，p2，p3，p4，p5，p6，p7，p8，p9，p10And the set (second candidate PCI set) of the PCIs of each cell of each co-frequency base station at the outermost layer of the target Delaunay triangulation network is { p1，p2，p3，p4，p6，p8，p9，p11，p12，p13，p14And intersecting the first PCI set to be selected and the second PCI set to be selected of the cell A to obtain a fourth PCI set to be selected of the cell A, wherein the fourth PCI set to be selected of the cell A is { p }1，p2，p3，p4，p6，p8，p9}. Removing PCIs (physical cell identifiers) which are the same as those in a 30 mode from the set (third candidate PCI set) of the PCIs of each cell of each same-frequency base station in the innermost layer of the target Delaunay triangulation network from the fourth candidate PCI set of the cell A to obtain that the target candidate PCI set of the cell A is { p }1，p2，p3}. The device obtains the target PCI to be selected of the cell B and the cell C in the same methodThe detailed flow is not described herein.
Fig. 4 is a schematic overall flow chart of the PCI planning method according to the embodiment of the present invention, and as shown in fig. 4, the PCI planning method according to the embodiment of the present invention specifically includes the following steps:
s401, acquiring frequency points, longitude and latitude and direction angles of cells of a base station to be planned; then, step S402 is executed;
s402, obtaining a target Delaunay triangulation network; the device generates a Delaunay triangulation network with the base station to be planned as a center corner point according to the acquired common-frequency base stations and the base station to be planned in the preset area range, counts the number of the common-frequency base stations outwards layer by layer from the base station to be planned on the Delaunay triangulation network, accumulates the number of the common-frequency base stations on each layer, and stops until the total number of the common-frequency base stations is greater than a preset threshold value, so as to obtain the target Delaunay triangulation network; then, step S403 is executed;
s403, acquiring a first PCI set to be selected corresponding to each cell of the base station to be planned; the device acquires the longitude and latitude of each same-frequency base station of the innermost layer of the target Delaunay triangulation network and the direction angle of each cell thereof, and calculates the influence factor of each cell of the base station to be planned according to the longitude and latitude of the same-frequency base station of the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned and the direction angle of each cell; then, sequentially eliminating the interference of the module 3 and the module 6 of each cell of the base station to be planned according to the sequence of the influence factors from large to small to obtain the first PCI set to be selected of each cell of the base station to be planned; then, step S404 is executed;
s404, acquiring a second PCI set to be selected; obtaining the PCI of each cell of each co-frequency base station at the outermost layer of the target Delaunay triangulation network as a second PCI set to be selected; then, step S405 is executed;
s405, acquiring a third PCI set to be selected; obtaining the PCI of each cell of each co-frequency base station in the innermost layer of the target Delaunay triangulation network as a third PCI set to be selected; then, step S406 is executed;
s406, acquiring the target PCI to be selected corresponding to each cell of the base station to be planned; the device respectively acquires the intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned to serve as a fourth PCI set to be selected of each cell of the base station to be planned; respectively eliminating PCIs (physical cell identifiers) which are the same as the PCIs of the third to-be-selected PCI set modulo 30 from the fourth to-be-selected PCI set of each cell of the base station to be planned, eliminating the modulo 30 interference, and taking the obtained PCI set as the target to-be-selected PCI set of each cell of the base station to be planned; then, step S407 is executed;
s407, acquiring target PCIs of all cells of the base station to be planned; and respectively calculating the distances between the co-frequency base station corresponding to the PCI included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCI corresponding to the co-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned.
Fig. 5 is a schematic structural diagram of a PCI planning apparatus according to an embodiment of the present invention, and as shown in fig. 5, the PCI planning apparatus according to the embodiment of the present invention includes a first obtaining unit 501, a second obtaining unit 502, a third obtaining unit 503, and a processing unit 504, where:
the first obtaining unit 501 is configured to obtain a frequency point, a longitude and latitude, and a direction angle of each cell of a base station to be planned;
the second obtaining unit 502 is configured to obtain a co-frequency base station of the base station to be planned within a preset area range according to the frequency point, and obtain a target Delaunay triangulation network with the base station to be planned as a center corner point according to the co-frequency base station and the base station to be planned and a first preset rule;
the third obtaining unit 503 is configured to obtain a target PCI set to be selected for each cell of the base station to be planned according to a second preset rule, according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned, and the corresponding direction angle of each cell;
the processing unit 504 is configured to calculate distances between the co-frequency base stations corresponding to the PCIs included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and to take the PCIs corresponding to the co-frequency base stations with the largest distances as the target PCIs of each cell of the base station to be planned.
Specifically, the first obtaining unit 501 obtains a frequency point, a longitude and latitude, and a direction angle of each cell of a base station to be planned; the base station to be planned can be a newly added base station, the frequency point is a main frequency point of the base station to be planned, and each cell is a cell covered by the base station to be planned, and is generally 3. The second obtaining unit 502 obtains a base station having the same frequency point as the base station to be planned within a preset area range with the base station to be planned as a center, that is, a common-frequency base station of the cell to be planned. The second obtaining unit 502 generates a Delaunay triangulation network using the base station to be planned as a center corner point according to the common-frequency base station and the base station to be planned, and counts the number of the common-frequency base stations layer by layer from the base station to be planned outward on the Delaunay triangulation network until the total number of the common-frequency base stations is greater than a preset threshold value, so as to obtain the target Delaunay triangulation network. Of course, the second obtaining unit 502 may also obtain the target Delaunay triangulation network in other manners, which may be specifically adjusted according to actual situations, and is not specifically limited herein. A third obtaining unit 503 obtains a set formed by PCIs corresponding to each cell of each co-frequency base station included in the target Delaunay triangulation network, as an alternative PCI set; then, the third obtaining unit 503 eliminates interference of modulo 3, modulo 6, and modulo 30 in the candidate PCI set according to a second preset rule, and obtains a set composed of target candidate PCIs of each cell of the base station to be planned, that is, the target candidate PCI set. The processing unit 504 obtains PCIs included in the target to-be-selected PCI set of each cell of the base station to be planned, searches for a common-frequency base station corresponding to each PCI, obtains the longitude and latitude of the common-frequency base station corresponding to each PCI, calculates the distance between the common-frequency base station corresponding to each PCI and the base station to be planned according to the longitude and latitude of the common-frequency base station corresponding to each PCI and the longitude and latitude of the base station to be planned, and uses the PCI corresponding to the common-frequency base station farthest from the base station to be planned as the target PCI of the corresponding cell of the base station to be planned.
The PCI planning apparatus provided in the embodiment of the present invention obtains the common-frequency base station of the base station to be planned in the preset area range according to the frequency point, obtains the longitude and latitude of the target Delaunay triangulation network and the longitude and latitude of the base station to be planned, and the direction angle of each corresponding cell, which use the base station to be planned as the center angle point, according to the first preset rule, obtains the target PCI to be selected of each cell of the base station to be planned according to the second preset rule, respectively calculates the distance between the common-frequency base station corresponding to the PCI included in the target PCI to be selected of each cell of the base station to be planned and the base station to be planned, and respectively uses the PCI corresponding to the common-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned, thereby improving the PCI planning efficiency of the newly added base station.
On the basis of the foregoing embodiment, further, the second obtaining unit 502 is specifically configured to:
generating a Delaunay triangulation network with the base station to be planned as a center corner point according to the co-frequency base station and the base station to be planned;
and on the Delaunay triangulation network, counting the number of the same-frequency base stations layer by layer from the base station to be planned outwards until the total number of the same-frequency base stations is greater than a preset threshold value, and obtaining the target Delaunay triangulation network.
Specifically, the second obtaining unit 502 generates a Delaunay triangulation network using the to-be-planned base station as a center point according to the to-be-planned base station and the to-be-planned base station within the preset area range obtained by the first obtaining unit 501, and on the Delaunay triangulation network, the to-be-planned base station starts counting the number of the to-be-planned base stations layer by layer outwards, and accumulates the number of the to-be-planned base stations in each layer until the total number of the to-be-planned base stations is greater than a preset threshold value, and then stops, so as to obtain the target Delaunay triangulation network. It is understood that the preset threshold may be set to 168; the preset area range may be a circular area range with the base station to be planned as a circle center and with a radius of 5 kilometers, and may be specifically adjusted according to an actual situation, which is not specifically limited herein.
Fig. 6 is a schematic structural diagram of a PCI planning apparatus according to another embodiment of the present invention, and as shown in fig. 6, the PCI planning apparatus according to the embodiment of the present invention includes a first obtaining unit 601, a second obtaining unit 602, a third obtaining unit 603, and a processing unit 604, where the first obtaining unit 601, the second obtaining unit 602, and the processing unit 604 are the same as the first obtaining unit 501, the second obtaining unit 502, and the processing unit 504 in the foregoing embodiment, and the third obtaining unit 603 includes a calculating subunit 605, a first obtaining subunit 606, a second obtaining subunit 607, and a processing subunit 608, where:
the calculating subunit 605 is configured to calculate an influence factor of each cell of the base station to be planned according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned, and the direction angle of each corresponding cell, and obtain a first PCI set to be selected corresponding to each cell of the base station to be planned according to the influence factor;
the first obtaining subunit 606 is configured to obtain PCIs of each cell of each co-frequency base station on the outermost layer of the target Delaunay triangulation network, as a second PCI set to be selected;
the second obtaining subunit 607 is configured to obtain PCIs of each cell of each co-frequency base station in the innermost layer of the target Delaunay triangulation network, as a third PCI set to be selected;
the processing subunit 608 is configured to obtain, according to the first to-be-selected PCI set, the second to-be-selected PCI set, and the third to-be-selected PCI set, the target to-be-selected PCI set corresponding to each cell of the base station to be planned.
Specifically, the calculating subunit 605 calculates an influence factor of each cell of the base station to be planned according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned, and the direction angle of each corresponding cell, and sequentially obtains a first PCI set to be selected corresponding to each cell of the base station to be planned according to a descending order of the influence factor; then, the first obtaining subunit 606 obtains PCIs of each cell of each co-frequency base station on the outermost layer of the target Delaunay triangulation network as a second PCI set to be selected; finally, the second obtaining subunit 607 obtains the PCIs of each cell of each co-frequency base station in the innermost layer of the target Delaunay triangulation network as a third PCI set to be selected; finally, the processing subunit 608 obtains the target PCI set to be selected corresponding to each cell of the base station to be planned according to the first PCI set to be selected, the second PCI set to be selected, and the third PCI set to be selected corresponding to each cell of the base station to be planned.
On the basis of the foregoing embodiment, further, the calculating subunit 605 is specifically configured to:
acquiring longitude and latitude of the co-frequency base station at the innermost layer of the target Delaunay triangulation network and direction angles of all cells;
calculating influence factors of each cell of the base station to be planned according to the longitude and latitude of the co-frequency base station at the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned and the direction angle of each cell;
and sequentially eliminating the interference of the module 3 and the module 6 of each cell of the base station to be planned according to the sequence of the influence factors from large to small to obtain the first PCI set to be selected of each cell of the base station to be planned.
Specifically, the calculating subunit 605 acquires the longitude and latitude of each co-frequency base station on the innermost layer of the target Delaunay triangulation network and the direction angle of each cell thereof, and calculates the influence factor of each cell of the base station to be planned according to the longitude and latitude of the co-frequency base station on the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned, and the direction angle of each cell; then, the calculating subunit 605 sequentially excludes the modulo-3 interference and the modulo-6 interference of each cell of the base station to be planned according to the sequence of the impact factors from large to small, and obtains the first PCI set to be selected of each cell of the base station to be planned.
On the basis of the foregoing embodiment, further, the processing subunit 608 is specifically configured to:
respectively acquiring an intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned to serve as a fourth PCI set to be selected of each cell of the base station to be planned;
and respectively eliminating the modulo 30 interference between the fourth PCI set to be selected of each cell of the base station to be planned and the third PCI set to be selected, and taking the obtained PCI set as the target PCI set to be selected of each cell of the base station to be planned.
Specifically, the processing subunit 608 obtains an intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned, respectively, as a fourth PCI set to be selected of each cell of the base station to be planned; and respectively eliminating PCIs (physical cell identifiers) which are the same as the PCIs of the third to-be-selected PCI set modulo 30 from the fourth to-be-selected PCI set of each cell of the base station to be planned, eliminating the modulo 30 interference, and taking the obtained PCI set as the target to-be-selected PCI set of each cell of the base station to be planned.
The embodiment of the apparatus provided in the present invention may be specifically configured to execute the processing flows of the above method embodiments, and the functions of the apparatus are not described herein again, and refer to the detailed description of the above method embodiments.
Fig. 7 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 7, the electronic device may include: a processor (processor)701, a memory (memory)702, and a bus 703, wherein the processor 701 and the memory 702 communicate with each other via the bus 703. The processor 701 may call logic instructions in the memory 702 to perform the following method: acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned; acquiring a common-frequency base station of the base station to be planned within a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to a first preset rule; acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angle of each cell; and respectively calculating the distances between the co-frequency base station corresponding to the PCI included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCI corresponding to the co-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned.
An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the methods provided by the above method embodiments, for example, the method includes: acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned; acquiring a common-frequency base station of the base station to be planned within a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to a first preset rule; acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angle of each cell; and respectively calculating the distances between the co-frequency base station corresponding to the PCI included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCI corresponding to the co-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned.
Embodiments of the present invention provide a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to perform the methods provided by the above method embodiments, for example, the methods include: acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned; acquiring a common-frequency base station of the base station to be planned within a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to a first preset rule; acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angle of each cell; and respectively calculating the distances between the co-frequency base station corresponding to the PCI included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCI corresponding to the co-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned.
In addition, the logic instructions in the memory 703 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A PCI planning method, comprising:
acquiring a frequency point, longitude and latitude and a direction angle of each cell of a base station to be planned;
acquiring a common-frequency base station of the base station to be planned within a preset area range according to the frequency point, and acquiring a target Delaunay triangulation network with the base station to be planned as a center angular point according to the common-frequency base station and the base station to be planned and a first preset rule;
acquiring a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angle of each cell;
respectively calculating the distances between the co-frequency base station corresponding to the PCI included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCI corresponding to the co-frequency base station with the largest distance as the target PCI of each cell of the base station to be planned;
the method for acquiring the target Delaunay triangulation network with the base station to be planned as the center corner point according to the common-frequency base station and the base station to be planned and a first preset rule comprises the following steps:
generating a Delaunay triangulation network with the base station to be planned as a center corner point according to the co-frequency base station and the base station to be planned;
on the Delaunay triangulation network, counting the number of the same-frequency base stations layer by layer from the base station to be planned outwards until the total number of the same-frequency base stations is greater than a preset threshold value, and obtaining the target Delaunay triangulation network;
the obtaining of the target PCI set to be selected of each cell of the base station to be planned according to a second preset rule according to the longitude and latitude of the target Delaunay triangulation network and the longitude and latitude of the base station to be planned and the corresponding direction angle of each cell includes:
calculating influence factors of all cells of the base station to be planned according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned and the corresponding direction angles of all the cells, and acquiring a first PCI set to be selected corresponding to all the cells of the base station to be planned according to the influence factors;
obtaining the PCI of each cell of each same-frequency base station on the outermost layer of the target Delaunay triangulation network as a second PCI set to be selected;
obtaining the PCI of each cell of each same-frequency base station in the innermost layer of the target Delaunay triangulation network as a third PCI set to be selected;
and acquiring the target PCI set to be selected corresponding to each cell of the base station to be planned according to the first PCI set to be selected, the second PCI set to be selected and the third PCI set to be selected.
2. The method according to claim 1, wherein the calculating an influence factor of each cell of the base station to be planned according to the longitude and latitude of the target Delaunay triangulation network and the base station to be planned and the corresponding direction angle of each cell, and obtaining a first PCI set to be selected corresponding to each cell of the base station to be planned according to the influence factor comprises:
acquiring longitude and latitude of the co-frequency base station at the innermost layer of the target Delaunay triangulation network and direction angles of all cells;
calculating influence factors of each cell of the base station to be planned according to the longitude and latitude of the co-frequency base station at the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned and the direction angle of each cell;
and sequentially eliminating the interference of the module 3 and the module 6 of each cell of the base station to be planned according to the sequence of the influence factors from large to small to obtain the first PCI set to be selected of each cell of the base station to be planned.
3. The method of claim 1, wherein the obtaining the target PCI candidate set corresponding to each cell of the base station to be planned according to the first PCI candidate set, the second PCI candidate set, and the third PCI candidate set comprises:
respectively acquiring an intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned to serve as a fourth PCI set to be selected of each cell of the base station to be planned;
and respectively eliminating the modulo 30 interference between the fourth PCI set to be selected of each cell of the base station to be planned and the third PCI set to be selected, and taking the obtained PCI set as the target PCI set to be selected of each cell of the base station to be planned.
4. A PCI planning apparatus, comprising:
the first acquisition unit is used for acquiring the frequency point, the longitude and latitude and the direction angle of each cell of the base station to be planned;
the second obtaining unit is used for obtaining a same-frequency base station of the base station to be planned in a preset area range according to the frequency point, and obtaining a target Delaunay triangulation network with the base station to be planned as a center angular point according to the same-frequency base station and the base station to be planned and a first preset rule;
a third obtaining unit, configured to obtain, according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned, and the corresponding direction angle of each cell, a target PCI set to be selected of each cell of the base station to be planned according to a second preset rule;
the processing unit is used for respectively calculating the distances between the co-frequency base stations corresponding to the PCIs included in the target to-be-selected PCI set of each cell of the base station to be planned and the base station to be planned, and respectively taking the PCIs corresponding to the co-frequency base stations with the largest distances as the target PCIs of each cell of the base station to be planned;
the second obtaining unit is specifically configured to:
generating a Delaunay triangulation network with the base station to be planned as a center corner point according to the co-frequency base station and the base station to be planned;
on the Delaunay triangulation network, counting the number of the same-frequency base stations layer by layer from the base station to be planned outwards until the total number of the same-frequency base stations is greater than a preset threshold value, and obtaining the target Delaunay triangulation network;
the third acquisition unit includes:
the calculation subunit is configured to calculate an influence factor of each cell of the base station to be planned according to the target Delaunay triangulation network, the longitude and latitude of the base station to be planned, and the direction angle of each corresponding cell, and acquire a first PCI set to be selected corresponding to each cell of the base station to be planned according to the influence factor;
a first obtaining subunit, configured to obtain PCIs of each cell of each co-frequency base station on an outermost layer of the target Delaunay triangulation network, as a second PCI set to be selected;
a second obtaining subunit, configured to obtain PCIs of each cell of each co-frequency base station in an innermost layer of the target Delaunay triangulation network, as a third PCI set to be selected;
and the processing subunit is configured to obtain the target PCI to be selected corresponding to each cell of the base station to be planned according to the first PCI to be selected set, the second PCI to be selected set, and the third PCI to be selected set.
5. The apparatus according to claim 4, wherein the computing subunit is specifically configured to:
acquiring longitude and latitude of the co-frequency base station at the innermost layer of the target Delaunay triangulation network and direction angles of all cells;
calculating influence factors of each cell of the base station to be planned according to the longitude and latitude of the co-frequency base station at the innermost layer, the direction angle of each cell, the longitude and latitude of the base station to be planned and the direction angle of each cell;
and sequentially eliminating the interference of the module 3 and the module 6 of each cell of the base station to be planned according to the sequence of the influence factors from large to small to obtain the first PCI set to be selected of each cell of the base station to be planned.
6. The apparatus according to claim 4, wherein the processing subunit is specifically configured to:
respectively acquiring an intersection of the first PCI set to be selected and the second PCI set to be selected of each cell of the base station to be planned to serve as a fourth PCI set to be selected of each cell of the base station to be planned;
and respectively eliminating the modulo 30 interference between the fourth PCI set to be selected of each cell of the base station to be planned and the third PCI set to be selected, and taking the obtained PCI set as the target PCI set to be selected of each cell of the base station to be planned.
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