CN105491574A - Method and device for determining priority of neighbor regions in neighbor region planning - Google Patents
Method and device for determining priority of neighbor regions in neighbor region planning Download PDFInfo
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- CN105491574A CN105491574A CN201410468691.8A CN201410468691A CN105491574A CN 105491574 A CN105491574 A CN 105491574A CN 201410468691 A CN201410468691 A CN 201410468691A CN 105491574 A CN105491574 A CN 105491574A
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Abstract
The invention discloses a method for determining the priority of neighbor regions in neighbor region planning, and the method comprises the steps: A, selecting a distance impact factor of a candidate neighbor region and a current cell, wherein the distance impact factor is related with the distance between the candidate neighbor region and the current cell, and is larger if the distance is shorter; B, calculating an angle impact factor of the candidate neighbor region and the current cell, wherein the angle impact factor is related with the connection line direction of the candidate neighbor region and the current cell, the antenna main lobe direction of the candidate neighbor region and the antenna main lobe direction of the current cell, and the angle impact factor is larger if the connection line direction, the antenna main lobe direction of the candidate neighbor region and the antenna main lobe direction of the current cell are more consistent with each other; C, calculating the sum of the distance impact factor and the angle impact factor, and obtaining the priority of neighbor regions. The invention also discloses a device for determining the priority of neighbor regions in neighbor region planning. According to the scheme of the invention, the method and device can reduce the complexity of priority calculation.
Description
Technical field
The application relates to wireless communication technology field, particularly relates to the method and device of determining priority of adjacent domain in a kind of adjacent section planning.
Background technology
Adjacent section planning is the important component part of wireless network planning in networking, and rational adjacent section planning is the basic demand ensureing grid performance.
LTE adjacent section planning has following basic principle:
The community of geographical position direct neighbor generally will as adjacent area;
Adjacent area General Requirements adjacent area each other, namely A sector is using B sector as adjacent area, and B sector also will using A as adjacent area;
Need in some scenarios to arrange unidirectional adjacent area.
For the urban settings that station spacing is less, adjacent area still can will be considered restricted number and stay certain surplus by polygamy.Current homogeneous-frequency adjacent-domain is maximum can configure 32, and maximum configurable 64 of alien frequencies adjacent area, different system adjacent cell is maximum can configure 64.
Traditional adjacent section planning mode generally adopts artificial planning, this mode efficiency is low and cost is high, along with the scale of mobile network is increasing, hundreds of even several thousand base stations especially can be disposed than the city of comparatively dense in each city, rely on artificial planning more and more to come more unrealistic, therefore need to use planning software to assist and carry out adjacent section planning.
In prior art, the scheme using planning software to carry out adjacent section planning comprises: carry out adjacent section planning by coverage prediction, and the calculating of priority is according to covering overlap or determine according to distance.This scheme has following limitation: need more accurate electronic chart to obtain the accurate overlay area of each community, thus causes the speed planning adjacent area slow, and cost is high, the computational process more complicated of priority and the overlapping index of covering.
Summary of the invention
This application provides the method and apparatus determining priority of adjacent domain in a kind of adjacent section planning, the complexity that priority calculates can be reduced.
The embodiment of the present application provides a kind of method determining priority of adjacent domain in adjacent section planning, comprising:
The distance influence factor of A, calculated candidate adjacent area and current area; The distance dependent of described distance influence factor and candidate adjacent and current area, the nearlyer then distance influence factor of this distance is larger;
The angle factor of influence of B, calculated candidate adjacent area and current area; The antenna main lobe direction of described angle factor of influence and candidate adjacent and the line direction of current area, the antenna main lobe direction of waiting adjacent area and current area is relevant, and this three direction is more consistent, then angle factor of influence is larger;
C, by distance influence factor and angle factor of influence summation, obtain priority of adjacent domain.
Preferably, steps A comprises: the longitude and latitude of each candidate adjacent in gathering according to current area and candidate adjacent, calculate the distance of current area and each candidate adjacent, the distance influence factor Y of each candidate adjacent is calculated according to described distance, the distance influence factor of the candidate adjacent larger with current area distance is then less, and the span of Y is: 0=<Y=<1;
Step B comprises: the angle factor of influence X calculating each candidate adjacent; The span of X is: 0=<X<1; Current area and the line direction of candidate adjacent and the main lobe direction angle of current area antenna are designated as A, span is 0<=A<=90 degree, the angle of candidate adjacent and the angle in direction, current area and the main lobe direction of candidate's adjacent cell antenna is designated as B, span is 0<=B<=90 degree, if A and B is more close to 0, then angle factor of influence X is larger, if A and B is more close to 90 degree, then angle factor of influence X is less;
Step C comprises: arrange the weighted value β of distance influence factor and the weight value α of angle factor of influence;
Calculate the priority value of each candidate adjacent, computing formula is: P=α × X+ β × Y.
Preferably, calculate distance influence factor Y according to formula Y=1-DISi/MaxD, wherein, DISi is the distance of current area and i-th candidate adjacent.
Preferably, the angle factor of influence X of described each candidate adjacent of calculating is:
If 0<=A<=30 degree and 0<=B<=30 degree, then angle factor of influence is set to X1;
If 0<=A<=30 degree and 30 degree of <B<=65 degree or 30 degree of <A<=65 degree and 0<=B<=30 degree, then angle factor of influence is set to X2;
If 30 degree of <A<=65 degree and 30 degree of <B<=65 degree, then angle factor of influence is set to X3;
A and B is (be all greater than 65 degree and be less than 90 degree) during other angles, and factor of influence is set to X4.
Wherein, X1>X2>X3>X4Gre atT.GreaT.GT=0.
Preferably, X1 is set to 0.25, X2 and is set to 0.21, X3 and is set to 0.18, X4 and is set to 0.
Preferably, the weighted value β of distance influence factor is 0.75.
The embodiment of the present application additionally provides the device determining priority of adjacent domain in a kind of adjacent section planning, comprising:
Distance influence factor computing module, for the distance influence factor of calculated candidate adjacent area and current area; The distance dependent of described distance influence factor and candidate adjacent and current area, the nearlyer then distance influence factor of this distance is larger;
Angle factor of influence computing module, for the angle factor of influence of calculated candidate adjacent area and current area; The antenna main lobe direction of described angle factor of influence and candidate adjacent and the line direction of current area, the antenna main lobe direction of waiting adjacent area and current area is relevant, and this three direction is more consistent, then angle factor of influence is larger;
Priority of adjacent domain computing module, for by distance influence factor and the summation of angle factor of influence, obtains priority of adjacent domain.
As can be seen from the above technical solutions, according to the position topological relationship calculation priority of adjacent domain of candidate adjacent and current area, the formula by quantifying carries out the calculating of priority of adjacent domain, reduces the complexity that priority calculates; Take into full account the impact of the distance of main plot and adjacent cell and the factor of antenna directional angle, priority of adjacent domain has been calculated more reasonable.
Accompanying drawing explanation
Fig. 1 is the adjacent section planning schematic flow sheet in the embodiment of the present application;
Fig. 2 is the method flow diagram of the priority of adjacent domain of calculated candidate described in step 103.
Embodiment
This application provides a kind of method determining priority of adjacent domain in adjacent section planning, its fundamental design idea is: according to the position topological relationship calculation priority of adjacent domain of candidate adjacent and current area, the calculating of this priority mainly comprises distance influence factor and angle factor of influence, the distance dependent of described distance influence factor and candidate adjacent and current area, the nearlyer then distance influence factor of this distance is larger; The antenna main lobe direction of described angle factor of influence and candidate adjacent and the line direction of current area, the antenna main lobe direction of waiting adjacent area and current area is relevant, and this three direction is more consistent, then angle factor of influence is larger.
For making the know-why of technical scheme, feature and technique effect clearly, below in conjunction with specific embodiment, technical scheme is described in detail.
Adjacent section planning flow process in the embodiment of the present application as shown in Figure 1, comprises the steps:
Step 101: the network topology parameters obtaining each community.
The acquisition of topological parameter can obtain from the engineering parameter of existing network, and concrete network topology parameters content comprises: the longitude and latitude of community, the azimuth of community, the horizontal half-power angle of antenna etc.
Step 102: select a community of not carrying out planning as current area, determines the candidate adjacent set of current area.
In the embodiment of the present application, candidate adjacent can be selected as follows: will be positioned at all alternatively adjacent area, other communities of current area coverage, wherein coverage is for the center of circle with the position of current area, with the sector region that the default covering ultimate range MaxD of current area is radius, the horizontal subtended angle of sector region is the horizontal field angle (65 degree) of current area and the spreading factor (being traditionally arranged to be 2) preset, and using the main lobe direction of current area antenna as the angular bisector direction of horizontal subtended angle.
Step 103: according to the priority of the network topology parameters calculated candidate adjacent area of adjacent area.
Step 104: according to priority sort to adjacent area, selects N number of candidate's adjacent cell as adjacent area according to priority order from high to low, and wherein N is default maximum adjacent area number.
Step 105: if require adjacent area, each community interworking, all communities export Neighboring Cell List after carrying out pressure adjacent area interworking, the while of namely ensureing that A community is the adjacent area of B, B community is also the adjacent area of A.If do not do requirement, then export Neighboring Cell List.
Wherein, the method calculating candidate adjacent priority in step 103 as shown in Figure 2, comprises the steps:
Step 201: the longitude and latitude of each candidate adjacent in gathering according to current area and candidate adjacent, calculates the distance of current area and each candidate adjacent.Wherein, the distance of current area and i-th candidate adjacent is designated as DIS
i.
Step 202: the distance influence factor Y calculating each candidate adjacent, the distance influence factor of the candidate adjacent larger with current area distance is then less.The span of Y is: 0=<Y=<1.
According to the preferred embodiment of the application, i-th candidate adjacent distance influence factor is: Y=1-DIS
i/ MaxD, MaxD are the ultimate range that covering is preset in current area.
Step 203: the angle factor of influence X calculating each candidate adjacent.The span of X is: 0=<X<1.
Current area and the line direction of candidate adjacent and the main lobe direction angle of current area antenna are designated as A (span is 0<=A<=90 degree), candidate adjacent and the angle in direction, current area and the angle in candidate's adjacent cell antenna main lobe direction are designated as B (span is 0<=B<=90 degree), if A and B is more close to 0, then angle factor of influence X is larger, if A and B is more close to 90 degree, then angle factor of influence X is less.
According to the preferred embodiment of the application, angle factor of influence is set in the following manner:
If 0<=A<=30 degree and 0<=B<=30 degree, then angle factor of influence is set to X1;
If 0<=A<=30 degree and 30 degree of <B<=65 degree or 30 degree of <A<=65 degree and 0<=B<=30 degree, then angle factor of influence is set to X2;
If 30 degree of <A<=65 degree and 30 degree of <B<=65 degree, then angle factor of influence is set to X3;
A and B is (be all greater than 65 degree and be less than 90 degree) during other angles, and factor of influence is set to X4.
Wherein, X1>X2>X3>X4Gre atT.GreaT.GT=0.
According to another preferred embodiment of the application, X1 is set to 0.25, X2 and is set to 0.21, X3 and is set to 0.18, X4 and is set to 0.
Step 204: the weighted value β of distance influence factor and the weight value α of angle factor of influence are set.
According to the difference of scene, can configure the value of different weighted values, the weighted value β generally arranging distance influence factor is 0.75, and the weighted value X of angular factors depends on X1, X2, X3 and X4.
Step 205: the priority value P calculating each candidate adjacent, computing formula is
P＝α×X+β×Y。
The embodiment of the present application additionally provides the device determining priority of adjacent domain in a kind of adjacent section planning, comprising:
Distance influence factor computing module, for the distance influence factor of calculated candidate adjacent area and current area; The distance dependent of described distance influence factor and candidate adjacent and current area, the nearlyer then distance influence factor of this distance is larger;
Angle factor of influence computing module, for the angle factor of influence of calculated candidate adjacent area and current area; The antenna main lobe direction of described angle factor of influence and candidate adjacent and the line direction of current area, the antenna main lobe direction of waiting adjacent area and current area is relevant, and this three direction is more consistent, then angle factor of influence is larger;
Priority of adjacent domain computing module, for by distance influence factor and the summation of angle factor of influence, obtains priority of adjacent domain.
The foregoing is only the preferred embodiment of the application; not in order to limit the protection range of the application; within all spirit in technical scheme and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.
Claims (7)
1. determine a method for priority of adjacent domain in adjacent section planning, it is characterized in that, comprising:
The distance influence factor of A, calculated candidate adjacent area and current area; The distance dependent of described distance influence factor and candidate adjacent and current area, the nearlyer then distance influence factor of this distance is larger;
The angle factor of influence of B, calculated candidate adjacent area and current area; The antenna main lobe direction of described angle factor of influence and candidate adjacent and the line direction of current area, the antenna main lobe direction of waiting adjacent area and current area is relevant, and this three direction is more consistent, then angle factor of influence is larger;
C, by distance influence factor and angle factor of influence summation, obtain priority of adjacent domain.
2. method according to claim 1, it is characterized in that, steps A comprises: the longitude and latitude of each candidate adjacent in gathering according to current area and candidate adjacent, calculate the distance of current area and each candidate adjacent, the distance influence factor Y of each candidate adjacent is calculated according to described distance, the distance influence factor of the candidate adjacent larger with current area distance is then less, and the span of Y is: 0=<Y=<1;
Step B comprises: the angle factor of influence X calculating each candidate adjacent; The span of X is: 0=<X<1; Current area and the line direction of candidate adjacent and the main lobe direction angle of current area antenna are designated as A, span is 0<=A<=90 degree, the angle of candidate adjacent and the angle in direction, current area and the main lobe direction of candidate's adjacent cell antenna is designated as B, span is 0<=B<=90 degree, if A and B is more close to 0, then angle factor of influence X is larger, if A and B is more close to 90 degree, then angle factor of influence X is less;
Step C comprises: arrange the weighted value β of distance influence factor and the weight value α of angle factor of influence;
Calculate the priority value of each candidate adjacent, computing formula is: P=α × X+ β × Y.
3. method according to claim 2, is characterized in that, according to formula Y=1-DIS
i/ MaxD calculates distance influence factor Y, wherein, and DIS
ifor the distance of current area and i-th candidate adjacent.
4. method according to claim 2, is characterized in that, the angle factor of influence X of described each candidate adjacent of calculating is:
If 0<=A<=30 degree and 0<=B<=30 degree, then angle factor of influence is set to X1;
If 0<=A<=30 degree and 30 degree of <B<=65 degree or 30 degree of <A<=65 degree and 0<=B<=30 degree, then angle factor of influence is set to X2;
If 30 degree of <A<=65 degree and 30 degree of <B<=65 degree, then angle factor of influence is set to X3;
A and B is (be all greater than 65 degree and be less than 90 degree) during other angles, and factor of influence is set to X4.
Wherein, X1>X2>X3>X4Gre atT.GreaT.GT=0.
5. method according to claim 4, is characterized in that, X1 is set to 0.25, X2 and is set to 0.21, X3 and is set to 0.18, X4 and is set to 0.
6. method according to claim 2, is characterized in that, the weighted value β of distance influence factor is 0.75.
7. determine a device for priority of adjacent domain in adjacent section planning, it is characterized in that, comprising:
Distance influence factor computing module, for the distance influence factor of calculated candidate adjacent area and current area; The distance dependent of described distance influence factor and candidate adjacent and current area, the nearlyer then distance influence factor of this distance is larger;
Angle factor of influence computing module, for the angle factor of influence of calculated candidate adjacent area and current area; The antenna main lobe direction of described angle factor of influence and candidate adjacent and the line direction of current area, the antenna main lobe direction of waiting adjacent area and current area is relevant, and this three direction is more consistent, then angle factor of influence is larger;
Priority of adjacent domain computing module, for by distance influence factor and the summation of angle factor of influence, obtains priority of adjacent domain.
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| US10972918B2 (en) | 2016-11-15 | 2021-04-06 | Elisa Oyj | Method and apparatus for mobile network designing |
| CN113676913A (en) * | 2021-08-06 | 2021-11-19 | 中国联合网络通信集团有限公司 | Neighbor cell list configuration method and device and server |
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Application publication date: 20160413 |