CN104301908B - Physical Cell Identifier distribution method - Google Patents
Physical Cell Identifier distribution method Download PDFInfo
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- CN104301908B CN104301908B CN201410648217.3A CN201410648217A CN104301908B CN 104301908 B CN104301908 B CN 104301908B CN 201410648217 A CN201410648217 A CN 201410648217A CN 104301908 B CN104301908 B CN 104301908B
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- H—ELECTRICITY
- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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Abstract
The present invention relates to a kind of Physical Cell Identifier distribution method, the method comprising the steps of one, packet, step 2, origin base station is chosen in planning region, step 3, is chosen and the closest secondary primordium station of origin base station, the PCI values of second group of imparting；Step 4, choose with origin base station, secondary primordium station composition triangle girth it is minimum in rear base station, the PCI values in three sectors of rear base station, assigning the 3rd group；Step 5, choose and form one of minimum remaining base station of triangle girth with two base stations therein in the as above base station of assignment, assign next group of PCI values to remaining base station by the method for step 4.The present invention only has 02 three possible values in specific planning process according to mod3, the planning of the Physical Cell Identifier of base station in real network can be more adapted to, and this method has higher practical function without the information according to user feedback to network primary construction.
Description
Technical field
The present invention relates to the technical field that PCI mod3 in LTE network are planned, more particularly to a kind of Physical Cell Identifier point
Method of completing the square.
Background technology
Existing PCI planing methods are broadly divided into three kinds：1) planned using 6 side shape honeycombs of standard, to part
The PCI planning for carrying out other origin base stations is replicated after being planned using cluster in region；2) PCI is preset, the later stage combines real
Each neighbor cell PCI interference volumes that mobile phone feeds back in the engineering of border calculate whether interference volume exceedes default adjustment threshold value, determine
Whether PCI adjustment is carried out；3) antenna feeder interference is carried out to planning region Nei Ge base station sections, according to total day of sector interference calculation base station
Feedback interference and interference sequence, the distribution of Physical Cell Identifier is carried out according to base station interference sequence.
The first planning mode, because existing network station layout is not according to the honeycomb of rule, in this case cluster
The mode of duplication can not realize planning, and therefore, this kind of planning mode is only capable of stopping in theory.Second of planning mode used
Cheng Zhong, in LTE network planning and networking initial stage, because user is less, the interference volume of feedback can not represent the true of network
Real situation.The third planning mode needs substantial amounts of calculating when selecting neighbor cell, does not consider after mod3 only may be used in PCI planning
Can occur 0,1,2 three kind of possibility so that calculating process is complicated, and according to existing network test when network load is more than 50% PCI
RS-SINR values are better than the situation of no mod3 interference when mod3 is disturbed, therefore neighbouring site is only carried out in the network planning
Mod3 interference analyses.
The content of the invention
In view of this, the present invention is directed to propose a kind of Physical Cell Identifier distribution method, with the physics to base station in network
Cell designation carries out more excellent planning.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of Physical Cell Identifier distribution method, this method comprise the following steps：
Step 1, packet, PCI is subjected to PCI mod3 packets according to triplets；
Step 2, origin base station is chosen in planning region, and to the PCI in first group of three sectors imparting of origin base station
Value；
Step 3, choose and be connected to origin base station and time primordium station with the closest secondary primordium station of origin base station, foundation
Between the first line, according to three sectors at the angle of the three of origin base station sectors and the first line and time primordium station and the
Correlation between the angle of one line, to three sectors at secondary primordium station, the PCI values of second group of imparting；
Step 4, choose and form being connected in rear base station, foundation for triangle girth minimum with origin base station, secondary primordium station
Origin base station and the second line between rear base station, and time primordium station and the 3rd line between rear base station are connected to,
According to the angle of three sectors and the 3rd line at the angle of the three of origin base station sectors and the second line and time primordium station it
Between correlation, and the correlation between three sectors of rear base station and the second line and the 3rd line, to rear
Three sectors of base station, assign the 3rd group of PCI values；)
Step 5, in planning region, choose and form triangle with two base stations therein in the as above base station of assignment
One of minimum remaining base station of girth, next group of PCI values are assigned to the base station by the method for step 4；
Step 6, repeat step five, it is assigned to remaining whole base stations.
Further, origin base station is chosen in described step two in planning region to comprise the following steps：
Distance between each base station in planning region is calculated, forms matrix；
The adjacent multiple base station distances summation closest with it to each base station in matrix, selected distance and minimum base
Stand as origin base station.
Further, the adjacent 10 base station distance summation closest with it to each base station in matrix.
Further, in described step three, according in the three of origin base station sectors be located at the first line both sides two
Individual sector and the angle of the first line, and it is located at two sectors and first of the first line both sides in three sectors at secondary primordium station
Correlation between the angle of line, to three sectors at secondary primordium station, the PCI values of second group of imparting.
Further, described step three comprises the following steps：
A, the sector of origin base station and time primordium station adjacent area each other is determined：It is pointed to the origin base station of first line the same side
Sector and the sector at time primordium station calculated with the first line angle sum, angle sum is less than 90 degree, then this two
Sector adjacent area each other；
Otherwise, the first line not sector at the sector of the origin base station of homonymy and time primordium station and the first binding clip are pointed to
Angle sum is compared, two minimum sectors of angle sum adjacent area each other；
B, starting in second group, with adjacent area each other is assigned to the non-sector for being located at the first line both sides in secondary primordium station
The PCI values of the identical mod3 in sector in base station；
C, the sector at the secondary primordium station of adjacent area each other is assigned it is in second group, be located at the first company with non-in origin base station
The identical mod3 in sector of line both sides PCI values；
D, the unassigned PCI values in second group are assigned to the remaining sector in secondary primordium station.
Further, described step four comprises the following steps：
A1, using the method in step A, determine origin base station and the sector of adjacent area each other between rear base station；
B1, using the method in step A, it is determined that secondary primordium station and the sector of adjacent area each other between rear base station；
C1, if in the sector of rear base station and origin base station adjacent area each other, and it is in rear base station and secondary primordium station adjacent each other
The sector in area is same sector, then：
C11, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with rear base station adjacent area each other
Sector uses different mod3 PCI values, then in rear base station with origin base station and secondary primordium the station sector of adjacent area each other, quilt
Assign the PCI values in the 3rd groups different with the sector m od3 values of origin base station and secondary primordium station adjacent area each other；
For in two sectors of rear station spare, by calculate two sectors and origin base station with it is non-in rear base station
Each other two sectors of adjacent area, secondary primordium station with the angle sum in two sectors of the non-adjacent area each other of rear base station, and will
The minimum sector in rear base station of angle sum, assign different from its mod3 into the minimum base station section of angle sum
PCI values；To unappropriated PCI values in remaining the 3rd group of the sector imparting in rear base station；
C12, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with rear base station adjacent area each other
Sector uses identical mod3 PCI values, then judges in rear base station another two sector and origin base station, each sector at secondary primordium station
Angle sum size, draw in the maximum sector of rear base station and origin base station or the secondary primordium station degree of correlation, then assign in rear base
It is in non-adjacent cell of standing and the maximum sector and origin base station of irrelevant degree, with behind rear base station each other the sector m od3 of adjacent area
Identical PCI values；
Judge the sector in rear base station into adjacent area and origin base station, the phase of two other sector of the secondary non-adjacent area in primordium station
Guan Du, draw and in rear base station into the sector that the sector degree of correlation of adjacent area is maximum, then into the sector point of adjacent area in rear base station
Value after the PCI mod3 matched somebody with somebody is the value after the PCI mod3 non-equal with the value after the sector PCI mod3 of degree of correlation maximum；It is surplus
Unappropriated PCI in remaining cell distribution group 3.
C2, if in the sector of rear base station and origin base station adjacent area each other, and it is in rear base station and secondary primordium station adjacent each other
The sector in area is different sectors, then：
C21, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with rear base station adjacent area each other
The PCI mod3 of sector are identical, then are entered as the 3rd in rear base station and the sector of origin base station, the non-adjacent area each other in secondary primordium station
In group, origin base station and the sector PCI mod3 value identical PCI values in rear base station adjacent area each other；
For in two sectors of rear station spare, by calculate two sectors and origin base station with it is non-in rear base station
Each other two sectors of adjacent area, secondary primordium station with the angle sum in two sectors of the non-adjacent area each other of rear base station, and will
The minimum sector in rear base station of angle sum, assign different from its mod3 into the minimum base station section of angle sum
PCI values；To unappropriated PCI values in remaining the 3rd group of the sector imparting in rear base station；
C22, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with rear base station adjacent area each other
The PCI mod3 of sector are differed, calculate rear base station this is non-as two sectors of adjacent area and origin base station and time primordium station
The size of the angle sum of the sector of adjacent area each other, calculate in the minimum related fan of rear base station Zhong Yufei adjacent areas angle sum
Area, to adjacent area in non-origin base station in the 3rd group of this sector assignment or secondary primordium station and each other mod3 of relevant sectors PCI
Value；
For remaining, the non-origin base station or secondary in the sector as adjacent area of rear station spare, the 3rd group of imparting
Adjacent area mod3 PCI values in primordium station；To unappropriated PCI values in remaining the 3rd group of the sector imparting in rear base station.
Relative to prior art, Physical Cell Identifier distribution method of the present invention has the advantage that：
The present invention only has tri- possible values of 0-2 in specific planning process according to mod3, therefore only considers adjacent
The planning of Physical Cell Identifier between base station, without calculating the relation between whole base stations, than existing with preferable hexagon microcellulor
The method of planning can more be adapted to the planning of the Physical Cell Identifier of base station in real network, and this method is without anti-according to user
The information of feedback, there is higher practical function to network primary construction.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is that the PCI of the embodiment of the present invention one is grouped schematic diagram；
Fig. 2 is that schematic diagram is planned in the part of the embodiment of the present invention one；
Fig. 3 is that schematic diagram is planned in the part of the embodiment of the present invention one；
Fig. 4 is the planning schematic diagram of the embodiment of the present invention two；
Fig. 5 is the planning schematic diagram of the embodiment of the present invention three；
Fig. 6 is the planning schematic diagram of the embodiment of the present invention four.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment one
The present embodiment is related to a kind of Physical Cell Identifier distribution method, and this method comprises the following steps：
Step 1, packet, PCI is subjected to PCI mod3 packets according to triplets, in the present embodiment, is divided into 168 groups,
Every group of 3 PCI values, the form that it is formed are as shown in Figure 1.
Step 2, origin base station is chosen in planning region, and to the PCI in first group of three sectors imparting of origin base station
Value, it is concretely comprised the following steps：Distance between each base station in planning region is calculated, forms matrix；To each base station in matrix
Closest with it adjacent 10 base station distance summation, selected distance and minimum base station are origin base station, the present embodiment
In, as shown in Fig. 2 origin base station is base station A, base station A three sectors are respectively A1, A2, A3, and base station A 3 sectors are pressed
PCI assignment is carried out by clock-wise fashion, is entered as first group of 0-2, its result is as shown in Figure 2, and A1 PCI values are 0, A2
PCI values be 1, A3 PCI values be 2.
Step 3, choose with closest base station A secondary primordium station, in the present embodiment, for ease of describing, secondary primordium station claims
For base station B, base station B 3 sectors are respectively B1, B2, B3；The first line AB being connected between base station A and base station B is established,
According between three sectors of the three of base station A sectors and the first line AB angle and base station B and the first line AB angle
Correlation, to base station B three sectors, assign second group of PCI values, its main design idea in the present embodiment is
According to the angle for two sectors and the first line AB for being located at the first line AB both sides in the three of base station A sectors, and base station B
Correlation in three sectors between two sectors of the first line AB both sides and the first line AB angle, to base station
B three sectors, second group of PCI values are assigned, it specifically includes following steps：
Step A, the sector of base station A and base station B adjacent area each other is determined：It is pointed to the base station A's of first line AB the same sides
Sector and base station B sector are calculated with the first line AB angle sums, and angle sum is less than 90 degree, then two sectors
Adjacent area each other；
Otherwise, the first line AB not the base station A of homonymy sector and base station B sector and the first line AB angles are pointed to
Sum is compared, two minimum sectors of angle sum adjacent area each other；
Based on as described above, in the present embodiment, each sector overlaps with the first line AB takes negative value clockwise, counterclockwise
Direction is taken on the occasion of when such as there is angle more than 180 °, angle need to be subtracted each other with 360.
Base station A each sector A1, A2, A3 and the first line AB angles are designated as ∠ A1, ∠ A2, ∠ A3, each sectors of base station B respectively
B1, B2, B3 and the first line AB angles are designated as ∠ B1, ∠ B2, ∠ B3 respectively.Base station A positioned at the first line AB the same side
Sector and base station B sector and the first line AB angles are respectively ∠ A3 and ∠ B1, and ∠ A2 and ∠ B2；Judge | ∠ A2 |+
∠ B2 and ∠ A3+ | ∠ B1 | minimum value, two sectors that judgement forms minimum value if minimum value is less than 90 degree are adjacent area；Such as
Minimum value formed above is more than 90 degree, then judges | ∠ A2+ ∠ B1 | the minimum value with ∠ A3+ ∠ B2, and judge to form minimum
Two sectors of value are adjacent cell.In the present embodiment, sector A3 and sector B1 angle sum is less than 90 degree, then sector A3 and fan
Area B1 adjacent areas each other.
Step B, the non-sector for being located at the first line AB both sides in the B of base station is assigned in second group, with adjacent area each other
The PCI values of the identical mod3 in sector in the A of base station；In the present embodiment, the non-sector for being located at the first line AB both sides in the B of base station, i.e.,
For the sector B3 farthest with the first line AB angles, PCI values that sector B3 is assigned are the sector A3 of adjacent area each other in the A of base station
PCI values 5 under mod3；
Step C, the base station B of adjacent area each other sector B1 is assigned it is in second group, be located at the first company with non-in the A of base station
The identical mod3 of sector A1 of line AB both sides PCI values 3；
Step D, the unassigned PCI values 4 in second group, now, base station B are assigned to the remaining sector B2 in the B of base station
It is assigned and finishes, its result is as shown in Figure 2.
Step 4, choose with base station A, base station B composition triangle girth minimum in rear base station, as shown in figure 3, in rear base
To stand as base station C, it has three sectors C1, C2, C3, establishes the second line AC being connected between base station A and base station C, and
The 3rd line BC being connected between base station B and base station C, according to the three of base station A sectors and the second line AC angle and base
The correlation stood between B three sectors and the 3rd line BC angle, and base station C three sectors and the second line AC
And the 3rd correlation between line BC, to base station C three sectors, assign the 3rd group of PCI values, it is assumed that base station A sectors
A1, A3 and the second line AC angle are designated as ∠ 6, ∠ 7, and base station C sectors C1, C2 and the second line AC angle are designated as ∠ 8, ∠
9；Base station B sectors B1, B3 and the 3rd line BC angle are designated as ∠ 10, ∠ 11, base station C sectors C2, C3's and the 3rd line BC
Angle is designated as ∠ 12, ∠ 13.It specifically includes following steps：
Step A1, using the method in step A, determine between base station A and base station C the sector of adjacent area each other；
Step B1, using the method in step A, determine between base station B and base station C the sector of adjacent area each other；
Step C1, if the base station C sector with base station A adjacent areas each other, and the base station C sector with base station B adjacent areas each other
For same sector, that is, it is the C2 shown in Fig. 3, then：
C11, if the sector of base station A and base station C adjacent area each other, and the sector use of base station B and base station C adjacent area each other are different
Mod3 PCI values, as shown in the present embodiment Fig. 3, the sector of base station A and base station C sector C2 adjacent area each other be A3, base station B and
The sector of base station C sector C2 adjacent areas each other is B1, and sector A3 mod3 PCI values are 2, and sector B1 mod3 PCI is 3,
Then in the C of base station with the base station A and base station B each other sector C2 of adjacent area, be endowed the fan with base station A and base station B adjacent areas each other
PCI values 7 in different the 3rd group of area's mod3 values；
For two sectors C1 and C3 in rear station spare, by calculating the non-with base station C of two sectors and base station A
Each other two sector A1, A2 of adjacent area, base station B the non-adjacent area each other with base station C two sectors B2, B3 angle sum,
It is and the sector in the minimum base station C of angle sum, imparting is different from its mod3 into the minimum base station section of angle sum
PCI values；Unappropriated PCI values in the 3rd group are assigned to remaining sector in the C of base station.Specifically, it is minimum in angle sum
For ∠ 11+ ∠ 13, then illustrate that the degree of correlation is maximum between B3 sectors and C3 sectors, then the maximum sector C3 quilts of the degree of correlation in the C of base station
PCI values are assigned, the PCI values are different from the PCI values after sector B3 mod3 in the B of base station, i.e., can not be 8, and due to sector C2
It is 7 to be invested PCI values, then sector C3 can only be assigned 6, and remaining sector C1 is then assigned 8 in the C of base station.
Step 5, in planning region, choose therein two with (base station A, base station B, base station C) in the as above base station of assignment
Individual base station forms one of minimum remaining base station of triangle girth, and next group is assigned to the base station by the method for step 4
PCI values；
Step 6, repeat step five, it is assigned to remaining whole base stations.
Embodiment two
The present embodiment is related to a kind of Physical Cell Identifier distribution method, its another kind in being distributed as Physical Cell Identifier
Situation, this method and embodiment one are essentially identical, and difference is in the C11 steps in embodiment one, the present embodiment, the step
It is rapid to be specially：
If the sector of base station A and base station C adjacent area each other, and the sector of base station B and base station C adjacent area each other use identical mod3
PCI values, i.e., as shown in figure 4, sector C2 and sector A3 adjacent area each other, sector C2 and sector B3 adjacent areas each other, and sector A3
PCI values are 2, and sector B3 PCI values are 5, it can be seen that be 2 after the mod3 that sector A3 and sector B3 are used, i.e. C2's
It is identical after two adjacent cell PCI values mod3, now, then judge the folder of base station C another twos sector and each sector in base station A, base station B
Angle sum size, base station C and base station A or the maximum sector of the base station B degrees of correlation are drawn, then assign in the C of base station non-adjacent cell and non-
The maximum sector distribution of the degree of correlation with it is in the A of base station, with identical PCI values after base station C each other the sector m od3 of adjacent area.
Specifically, sector C1, sector C3 respectively with sector A1, sector A2, sector A3, sector B1, sector B2, sector B3
Carry out angle sum calculating, angle sum is minimum, then correlation maximum, sector C3 and sector B3 correlation maximums in Fig. 4, then
It is 5 that sector C1, which distributes PCI mod3 values and sector B3 in sector B3PCI mod3 value identicals PCI, Fig. 4 PCI in the 3rd group,
Value is 2 after mod3, then the PCI values that PCI mod3 values are 2 in the 3rd group of sector C1 distribution, specially 8.
Next, judge in the C of base station into the sector C2 and base station A of adjacent area, the phase of two other sector of the non-adjacent areas of base station B
Guan Du, draws and into the sector that the sector degree of correlation of adjacent area is maximum, then the sector C2 in the C of base station into adjacent area is distributed in the C of base station
Value after PCI mod3 is the value after the PCI mod3 non-equal with the value after the sector PCI mod3 of degree of correlation maximum；It is remaining small
Distinguish unappropriated PCI in combo 3.Accept as above concrete numerical value example, judge C2 sectors and sector A1, sector A2, sector B1,
The minimum sector of angle sum formed by the B2 of sector, sector C2 is minimum with sector B1 angles sum in Fig. 4, and sector B1 PCI is
3, mod3 values are 0, then it can not be 0 that C2, which distributes PCI mod3 values, therefore C2 distribution PCI is 7, and the PCI for finally distributing sector C3 is
6。
Embodiment three
The present embodiment also relates to a kind of Physical Cell Identifier distribution method, and it is as another in Physical Cell Identifier distribution
A kind of situation, this method and embodiment one are essentially identical, difference in the C1 steps in embodiment one, the present embodiment,
The step is specially：
The base station C sector with base station A adjacent areas each other, and base station C's is different fans from the sector of base station B adjacent areas each other
Area, as shown in figure 5, the sector of base station C and base station A adjacent area each other is sector C1 and sector A3, base station C and base station B adjacent area each other
Sector be sector C2 and sector B3.
Step C21, sector A3 PCI values are 2, and sector B3 PCI values are 5, it can be seen that, sector A3 and sector B3's
PCI mod3 are identical, then being entered as with the sector C3 of the non-adjacent area each other of base station A, base station B in the 3rd group of base station C, base station A and base
Stand C sector A3 of adjacent area each other PCI mod3 value identical PCI values 8；
For base station C remaining two sectors C1 and C2, by calculating the non-mutually with base station C of two sectors and base station A
For two sectors A1 and A3 of adjacent area, two sectors B1, B2 of the base station B non-adjacent area each other with base station C angle sum, and
By the sector in the minimum base station C of angle sum, the PCI different from its mod3 into the minimum base station section of angle sum is assigned
Value；Unappropriated PCI values in the 3rd group are assigned to remaining sector in the C of base station；
Example IV
The present embodiment also relates to a kind of Physical Cell Identifier distribution method, and it is as another in Physical Cell Identifier distribution
A kind of situation, this method and embodiment three are essentially identical, difference in the C21 steps in embodiment three, the present embodiment,
The step is specially：
C22, if the sector of base station A and base station C adjacent area each other is sector A3 and sector C1, base station B and base station C adjacent area each other
Sector be sector B1 and sector C2, sector A3 PCI values are 2, and sector B1 PCI values are 3, sector B1 and sector A3 PCI
Mod3 is differed, then calculation base station C different two sectors C1, the C2 and the angle of the non-adjacent areas each other of base station A and base station B it
The size of sum, relevant sectors minimum with non-adjacent area angle sum in the C of base station are calculated, that is, calculate sector C1 and sector A1, fan
Sector minimum with angle sum formed by sector B2, sector B3 area A2 and sector C2, as shown in fig. 6, sector C1 and sector
A1 sectors angle sums is minimum, then to adjacent area in non-origin base station in the 3rd group of this sector C1 assignment or secondary primordium station and
The mod3 of relevant sectors PCI values each other, i.e. sector C1 distribution PCI mod3 values can not be identical with A1, A3PCI mod3 values, then
Sector C1 PCI is assigned as 7, is 1 after its mod3 value.
For the remaining sector C2 as adjacent area of base station C, assign adjacent in remaining, non-base station A or base station B in the 3rd group
Area mod3 PCI values, i.e., the value that it is 2 that then C2, which can only be taken after PCI mod3, are assigned as 8 herein, and it is 6 finally to distribute C3PCI.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (6)
1. a kind of Physical Cell Identifier distribution method, it is characterised in that this method comprises the following steps：
Step 1, packet, PCI is subjected to PCI mod3 packets according to triplets；
Step 2, origin base station is chosen in planning region, and to the PCI values in first group of three sectors imparting of origin base station；
Step 3, choose and be connected to the closest secondary primordium station of origin base station, foundation between origin base station and secondary primordium station
The first line, according to three sectors at the angle of the three of origin base station sectors and the first line and time primordium station and the first company
Correlation between the angle of line, to three sectors at secondary primordium station, the PCI values of second group of imparting；
Step 4, chooses and what origin base station, secondary primordium station composition triangle girth were minimum is connected to starting in rear base station, foundation
Base station and the second line between rear base station, and time primordium station and the 3rd line between rear base station are connected to, according to
Between the angle of three sectors and the 3rd line at three sectors of origin base station and the angle of the second line and secondary primordium station
Correlation, and the correlation between three sectors of rear base station and the second line and the 3rd line, in rear base station
Three sectors, assign the 3rd group of PCI values；
Step 5, in planning region, choose and form triangle girth with two base stations therein in the as above base station of assignment
One of minimum remaining base station, next group of PCI values are assigned to the base station by the method for step 4；
Step 6, repeat step five, it is assigned to remaining whole base stations.
2. Physical Cell Identifier distribution method according to claim 1, it is characterised in that planned in described step two
Origin base station is chosen in area to comprise the following steps：
Distance between each base station in planning region is calculated, forms matrix；
The adjacent multiple base station distances summation closest with it to each base station in matrix, selected distance and minimum base station are
Origin base station.
3. Physical Cell Identifier distribution method according to claim 2, it is characterised in that to each base station in matrix and its away from
From nearest adjacent 10 base station distance summation.
4. Physical Cell Identifier distribution method according to claim 1, it is characterised in that in described step three, according to
Positioned at two sectors of the first line both sides and the angle of the first line, and the three of secondary primordium station in three sectors of origin base station
Correlation in individual sector between two sectors of the first line both sides and the angle of the first line, to secondary primordium station
Three sectors, assign second group of PCI values.
5. Physical Cell Identifier distribution method according to claim 4, it is characterised in that described step three includes as follows
Step：
A, the sector of origin base station and time primordium station adjacent area each other is determined：It is pointed to the fan of the origin base station of first line the same side
The sector at area and time primordium station is calculated with the first line angle sum, and angle sum is less than 90 degree, then two sectors
Adjacent area each other；
Otherwise, be pointed to the first line not the sector at the sector of the origin base station of homonymy and time primordium station and the first line angle it
Be compared, two minimum sectors of angle sum adjacent area each other；
B, origin base station in second group, with adjacent area each other is assigned to the non-sector for being located at the first line both sides in secondary primordium station
In the identical mod3 in sector PCI values；
C, the sector at the secondary primordium station of adjacent area each other is assigned it is in second group, be located at the first line two with non-in origin base station
The identical mod3 in sector of side PCI values；
D, the unassigned PCI values in second group are assigned to the remaining sector in secondary primordium station.
6. Physical Cell Identifier distribution method according to claim 5, it is characterised in that described step four includes as follows
Step：
A1, using the method in step A, determine origin base station and the sector of adjacent area each other between rear base station；
B1, using the method in step A, it is determined that secondary primordium station and the sector of adjacent area each other between rear base station；
C1, if in the sector of rear base station and origin base station adjacent area each other, and in rear base station and secondary primordium station adjacent area each other
Sector is same sector, then：
C11, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with the sector of rear base station adjacent area each other
Using different mod3 PCI values, then in rear base station with origin base station and time primordium the station sector of adjacent area each other, be endowed
PCI values in the 3rd group different from the sector m od3 values of origin base station and time primordium station adjacent area each other；
For in two sectors of rear station spare, by calculate two sectors and origin base station with it is non-each other in rear base station
Two sectors of adjacent area, secondary primordium station with the angle sum in two sectors of the non-adjacent area each other of rear base station, and by angle
The minimum sector in rear base station of sum, assign the PCI value different from its mod3 into the minimum base station section of angle sum；
To unappropriated PCI values in remaining the 3rd group of the sector imparting in rear base station；
C12, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with the sector of rear base station adjacent area each other
Using identical mod3 PCI values, then judge in rear base station another two sector and origin base station, the folder of each sector at secondary primordium station
Angle sum size, draw in the maximum sector in rear base station and origin base station or the secondary primordium station degree of correlation, then assign in rear base station
Non- adjacent cell and the maximum sector of irrelevant degree with it is in origin base station, identical with behind rear base station each other the sector m od3 of adjacent area
PCI values；
Judge sector and origin base station in rear base station into adjacent area, the secondary non-adjacent area in primordium station two other sector it is related
Degree, draw and in rear base station into the sector that the sector degree of correlation of adjacent area is maximum, then into the sector distribution of adjacent area in rear base station
PCI mod3 after value be the sector PCI mod3 maximum with the degree of correlation after the non-equal PCI mod3 of value after value；It is remaining
Unappropriated PCI in cell distribution group 3.
C2, if in the sector of rear base station and origin base station adjacent area each other, and in rear base station and secondary primordium station adjacent area each other
Sector is different sectors, then：
C21, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with the sector of rear base station adjacent area each other
PCI mod3 it is identical, then in being entered as the 3rd group in the sector of rear base station and origin base station, the non-adjacent area each other in secondary primordium station,
Origin base station and the sector PCI mod3 value identical PCI values in rear base station adjacent area each other；
For in two sectors of rear station spare, by calculate two sectors and origin base station with it is non-each other in rear base station
Two sectors of adjacent area, secondary primordium station with the angle sum in two sectors of the non-adjacent area each other of rear base station, and by angle
The minimum sector in rear base station of sum, assign the PCI value different from its mod3 into the minimum base station section of angle sum；
To unappropriated PCI values in remaining the 3rd group of the sector imparting in rear base station；
C22, if origin base station with the sector of rear base station adjacent area each other, and secondary primordium station with the sector of rear base station adjacent area each other
PCI mod3 differ, calculate rear base station this is non-each other as two sectors and the origin base station of adjacent area and secondary primordium station
The size of the angle sum of the sector of adjacent area, calculate in the minimum relevant sectors of rear base station Zhong Yufei adjacent areas angle sum, it is right
Adjacent area and the mod3 of relevant sectors PCI values each other in non-origin base station or secondary primordium station in the 3rd group of this sector assignment；
For remaining, non-origin base station or secondary primordium in the sector as adjacent area of rear station spare, the 3rd group of imparting
Adjacent area mod3 PCI values in standing；To unappropriated PCI values in remaining the 3rd group of the sector imparting in rear base station.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130127141A (en) * | 2012-05-14 | 2013-11-22 | 주식회사 케이티 | Method and apparatus for allocating cell identifier |
| CN103716801A (en) * | 2013-12-05 | 2014-04-09 | 广东省电信规划设计院有限公司 | Physical cell identification (PCI) allocation method and system |
| CN103716845A (en) * | 2012-10-09 | 2014-04-09 | 中兴通讯股份有限公司 | PCI distribution method and device |
| CN103781076A (en) * | 2014-01-16 | 2014-05-07 | 上海大唐移动通信设备有限公司 | Physical cell identify distribution method and device |
| CN104025636A (en) * | 2011-12-02 | 2014-09-03 | 爱立信(中国)通信有限公司 | Physical cell identity allocation |
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2014
- 2014-11-14 CN CN201410648217.3A patent/CN104301908B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104025636A (en) * | 2011-12-02 | 2014-09-03 | 爱立信(中国)通信有限公司 | Physical cell identity allocation |
| KR20130127141A (en) * | 2012-05-14 | 2013-11-22 | 주식회사 케이티 | Method and apparatus for allocating cell identifier |
| CN103716845A (en) * | 2012-10-09 | 2014-04-09 | 中兴通讯股份有限公司 | PCI distribution method and device |
| CN103716801A (en) * | 2013-12-05 | 2014-04-09 | 广东省电信规划设计院有限公司 | Physical cell identification (PCI) allocation method and system |
| CN103781076A (en) * | 2014-01-16 | 2014-05-07 | 上海大唐移动通信设备有限公司 | Physical cell identify distribution method and device |
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