CN106612502B - A kind of acquisition methods and system of Physical Cell Identifier PCI - Google Patents
A kind of acquisition methods and system of Physical Cell Identifier PCI Download PDFInfo
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- CN106612502B CN106612502B CN201610012404.1A CN201610012404A CN106612502B CN 106612502 B CN106612502 B CN 106612502B CN 201610012404 A CN201610012404 A CN 201610012404A CN 106612502 B CN106612502 B CN 106612502B
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Abstract
The invention discloses the acquisition methods and system of a kind of Physical Cell Identifier PCI, method therein includes: the first neighboring cell list for obtaining Target cell when maximum adjacent area number is the first reference value；Determine the least first primary synchronization signal value of the number occurred in PCI used in all cells in first neighboring cell list in all primary synchronization signal values；In the first set that the PCI that all primary synchronization signal values are equal to the first primary synchronization signal value is formed, the PCI of the Target cell is determined.Compared with existing cell PCI acquisition methods and system, cell PCI acquisition methods provided by the invention and system, the PCI that Target cell is determined in the PCI having from one group with adjacent area primary synchronization signal value low repeatability, reduces the recurrence probability of the primary synchronization signal value of the PCI of Target cell and the PCI of adjacent area.
Description
Technical field
The invention belongs to field of communication technology, in particular to a kind of the acquisition methods and system of Physical Cell Identifier PCI.
Background technique
When carrying out Physical Cell Identifier PCI planning, need to meet the principle not conflicted.Not conflict principles: guarantee some
Neighboring community's Physical Cell Identifier PCI value of cell is unequal, and optimal Physical Cell Identifier PCI value is interfered in selection as far as possible.
If the identical Physical Cell Identifier PCI of neighbor cell allocation, since at most only one cell can be by user in overlapping region
Detect, when search of initial zone, can only synchronize to one of cell, and the cell be not necessarily it is most suitable.Such case
The case where being exactly cell PCI conflict.
The acquisition of the Physical Cell Identifier PCI of cell is based on the knot after adjacent section planning in existing long term evolution LTE system
Fruit.After carrying out adjacent section planning, neighboring cell list is saved in lane database, in Physical Cell Identifier PCI planning, each cell root
According to the Physical Cell Identifier PCI that selected in neighboring cell list, to determine final Physical Cell Identifier PCI.
Currently, only using a set of neighboring cell list, this method is in neighboring cell list when carrying out Physical Cell Identifier PCI planning
When middle number is excessive, when distributing the result of Physical Cell Identifier PCI primary synchronization signal value, if in neighboring cell list priority compared with
Low distribution PCI will lead to the PCI conflict of the higher cell of priority in this cell PCI and neighboring cell list.
Summary of the invention
The present invention provides the acquisition methods of Physical Cell Identifier PCI a kind of, can reduce used in cell PCI and adjacent area
The probability of the primary synchronization signal value conflict of PCI.
In a first aspect, the present invention provides the acquisition methods of Physical Cell Identifier PCI a kind of, comprising: obtain Target cell
The first neighboring cell list when maximum adjacent area number is the first reference value；
Determine occur in PCI used in all cells in first neighboring cell list in all primary synchronization signal values
The least first primary synchronization signal value of number；
In the first set that the PCI that all primary synchronization signal values are equal to the first primary synchronization signal value is formed, determine
The PCI of the Target cell.
Preferably, the first of the PCI formation that the first primary synchronization signal value is equal in all primary synchronization signal values
In set, the PCI of the Target cell is determined, comprising:
If the second set for the PCI composition that all access times are zero in the first set is nonempty set, described
The PCI of the Target cell is determined in second set.
Preferably, the first of the PCI formation that the first primary synchronization signal value is equal in all primary synchronization signal values
In set, the PCI of the Target cell is determined, further includes:
Obtain second neighboring cell list of the Target cell when maximum adjacent area number is the second reference value；Second reference value
Greater than first reference value；
If all in the first set be not included in second neighboring cell list, and the distance away from the Target cell
The third collection of the composition of PCI used in cell greater than preset multiplex distance is combined into nonempty set, then in the third set
The PCI of the middle determination Target cell.
Preferably, which is characterized in that the PCI for being equal to the first primary synchronization signal value in all primary synchronization signal values
In the first set of formation, the PCI of the Target cell is determined, further includes:
If all in the first set be not included in second neighboring cell list, and the distance away from the Target cell
The 4th collection of the composition of PCI used in cell less than or equal to the multiplex distance is combined into nonempty set, in the 4th set
Determine the PCI of the Target cell.
Preferably, the first of the PCI formation that the first primary synchronization signal value is equal in all primary synchronization signal values
In set, the PCI of the Target cell is determined, further includes:
If the 4th collection is combined into empty set, the cell belonged in second neighboring cell list is chosen and away from the Target cell
PCI of the PCI as the Target cell used in the farthest cell.
On the other hand, the present invention also provides the acquisition system of Physical Cell Identifier PCI a kind of, including module, the are obtained
One determining module and the second determining module；Wherein,
The module that obtains is used to obtain first adjacent area column of the Target cell when maximum adjacent area number is the first reference value
Table；
First determining module is used to determine the first neighbour obtained in all primary synchronization signal values in the acquisition module
The least first primary synchronization signal value of the number occurred in PCI used in all cells in area's list；
Second determining module is used to be equal to first that first determining module obtains in all primary synchronization signal values
In the first set that the PCI of primary synchronization signal value is formed, the PCI of the Target cell is determined.
Preferably, second determining module includes the first judging submodule, the first determining submodule；
First judging submodule is used to judge the of all access times are zero in the first set PCI composition
Whether two set are nonempty set；
Described first determines that submodule is used in the result that first judging submodule obtains be that the second set is
When nonempty set, the PCI of the Target cell is determined from the second set.
Preferably, second determining module further includes acquisition submodule, second judgment submodule, the second determining submodule
Block；
The acquisition submodule is used to obtain second adjacent area of the Target cell when maximum adjacent area number is the second reference value
List；Second reference value is greater than first reference value；
The second judgment submodule all in the first set is not included in second neighboring cell list for judging
In, and the third set of PCI composition used in cell of the distance away from the Target cell greater than preset multiplex distance is
No is nonempty set；
Described second determines that submodule is used in the result that the second judgment submodule obtains be that the third collection is combined into
When nonempty set, the PCI of the Target cell is determined from the third set.
Preferably, second determining module further includes that third judging submodule, third determine submodule；
The third judging submodule all in the first set is not included in second neighboring cell list for judging
In, and the distance away from the Target cell is less than or equal to the 4th collection of the composition of PCI used in the cell of the multiplex distance and is combined into
Nonempty set；
The third determines that result of the submodule for obtaining in the third judging submodule is that the 4th collection is combined into
When nonempty set, the PCI of the Target cell is determined from the 4th set.
Preferably, second determining module further includes the 4th determining submodule；
Described 4th determines that submodule is used in the result that the third judging submodule obtains be that the 4th collection is combined into
When empty set, selection belongs to second neighboring cell list and away from Target cell PCI conduct used in the farthest cell
The PCI of the Target cell.
In the acquisition methods and system of cell PCI provided by the invention, set the maximum adjacent area number of Target cell to
Smaller value obtains neighboring cell list.Obtain the least primary synchronization signal value of access times according to the neighboring cell list, from have the master it is same
Walk the PCI that Target cell is chosen in the PCI of signal value.Since the primary synchronization signal value is the least main synchronization of adjacent area access times
Signal value, so the primary synchronization signal value recurrence probability of the PCI of the PCI and adjacent area of the Target cell with the primary synchronization signal value
It is minimum.
Compared with the PCI acquisition methods and system of existing cell, cell PCI acquisition methods provided by the invention and it is
It is small to reduce target from one group with the PCI for determining Target cell in the PCI with adjacent area primary synchronization signal value low repeatability for system
The recurrence probability of the primary synchronization signal of the PCI of the PCI and adjacent area in area.Meanwhile by this method and system and cell in the prior art
The acquisition methods and system of PCI combine, it is ensured that under the premise of primary synchronization signal value repetitive rate is low, finds out cell and be most suitable for
PCI.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the acquisition methods flow chart of cell PCI provided by one embodiment of the present invention；
Fig. 2 is the acquisition methods flow chart for the cell PCI that another embodiment of the present invention provides；
Fig. 3 is the set relation figure that cell PCI provided by the invention chooses；
Fig. 4 is the schematic diagram that the cell PCI that another embodiment of the present invention provides obtains system.
Specific embodiment
Embodiment 1:
The present embodiment describes the acquisition methods of Physical Cell Identifier PCI a kind of, which includes as shown in Figure 1
Step.
Step 100: obtaining first neighboring cell list of the Target cell when maximum adjacent area number is the first reference value.
It should be understood that Target cell is the undetermined cell of a PCI, the PCI of Target cell can be by this implementation
The method recorded in example determines.First reference value is the maximum adjacent area number of preset Target cell.First neighboring cell list be by
The maximum adjacent area number of Target cell is set as the first reference value, carries out the adjacent area that adjacent section planning obtains to the adjacent area of Target cell
List.Adjacent area refer to signal of communication be covered with overlapping and there are the cell of handoff relation, a cell can have multiple adjacent
Cell.
Step 200: determining in all primary synchronization signal values to go out in PCI used in all cells in the first neighboring cell list
The least first primary synchronization signal value of existing number.
It should be understood that primary synchronization signal value is a component part of PCI value, it can be according to primary synchronization signal value
All PCI points are 3 groups by value 0,1 and 2, and every group includes 168 different marks.
In the step, three primary synchronization signal values are compared in the PCI used in the cell for being contained in the first neighboring cell list,
The number that each primary synchronization signal value occurs, the first primary synchronization signal value is exactly the least primary synchronization signal value of frequency of occurrence.
For example, three primary synchronization signal values of comparison are in the PCI used in the cell for being contained in the first neighboring cell list, it is each
When the number that primary synchronization signal value occurs, the number that the PCI that primary synchronization signal value is 1 occurs is 0, then the first primary synchronization signal value
It is 1.
Alternatively, three primary synchronization signal values of comparison are in the PCI used in the cell for being contained in the first neighboring cell list, it is each
When the number that primary synchronization signal value occurs, in primary synchronization signal value 0,1 and 2, the PCI that primary synchronization signal value is 0 and 1 occurs secondary
Number is identical, and the frequency of occurrence of both less than primary synchronization signal value 2.Then, the cell that comparison is contained in the first neighboring cell list is made
In PCI, the sum for the PCI that the sum and primary synchronization signal value for the PCI that primary synchronization signal value is 0 are 1, by the sum of PCI
Few primary synchronization signal value is as the first primary synchronization signal value.Further, if primary synchronization signal value 0 and primary synchronization signal value 1
The sum of corresponding PCI is identical, then the first primary synchronization signal value is times in primary synchronization signal value 0 or primary synchronization signal value 1
Meaning one.
Step 300: in the first set that the PCI that all primary synchronization signal values are equal to the first primary synchronization signal value is formed,
Determine the PCI of Target cell.
It should be understood that first set is that primary synchronization signal value is equal to first all PCI of primary synchronization signal value, share
The different PCI of 168 secondary synchronization signal values.
In the acquisition methods for the physical area PCI that the present embodiment is recorded, set the maximum adjacent area number of Target cell to
Smaller value obtains neighboring cell list.Obtain the least primary synchronization signal value of access times according to the neighboring cell list, from have the master it is same
Walk the PCI that Target cell is chosen in the PCI of signal value.Since the primary synchronization signal value is the least main synchronization of adjacent area access times
Signal value, so the primary synchronization signal value recurrence probability of the PCI of the PCI and adjacent area of the Target cell with the primary synchronization signal value
It is minimum.
Compared with the PCI acquisition methods of existing cell, the cell PCI acquisition methods that the present embodiment is recorded, from one group of tool
There is and determine in the PCI of adjacent area primary synchronization signal value low repeatability the PCI of Target cell, reduces the PCI and neighbour of Target cell
The recurrence probability of the primary synchronization signal of the PCI in area.
Embodiment 2:
The summary of the invention that the present embodiment is recorded in 1 in conjunction with the embodiments gives another method for determining cell PCI, tool
The flow chart of body is as shown in Figure 2.
As shown in Fig. 2, the step 100 and step 200 recorded in step 100 and step 200 and embodiment 1 are identical.It is different
:
Step 301: judging the first set that the PCI for being equal to the first primary synchronization signal value in all primary synchronization signal values is formed
In, whether the second set for the PCI composition that access times are zero is empty set.
It should be understood that the PCI that access times are zero is the PCI for being also not yet assigned to any cell.
First set in step 301 is identical as the first set in the step 300 in embodiment 1, unlike, the step
Whether the second set for needing first to judge the PCI composition that access times are zero in first set in rapid is empty set.If second set
It is nonempty set, the PCI of Target cell is determined from second set.Specifically, any PCI in second set is chosen as mesh
Mark the PCI of cell.If second set is empty set, 302 are thened follow the steps.
Step 302: obtaining second neighboring cell list of the Target cell when maximum adjacent area number is the second reference value.Wherein,
Second reference value is greater than the first reference value.
It should be understood that the second reference value is the maximum adjacent area number of preset Target cell.Second reference value is greater than
First reference value.Second neighboring cell list is to set the second reference value for the maximum adjacent area number of Target cell, to Target cell
Adjacent area carry out the obtained neighboring cell list of adjacent section planning.
Step 303: judging to be not included in first set in the second neighboring cell list, and the distance away from Target cell is greater than in advance
If multiplex distance cell used in PCI composition third set whether be empty set.
It should be understood that multiplex distance is the distance of the signal interference setting of neighboring community in order to prevent, use is identical
The distance between two cells of PCI need to meet minimum multiplex distance.
If second set is empty set, need to judge to be not included in first set in the second neighboring cell list in the step, and
Whether the third set that the distance away from Target cell is greater than the composition of PCI used in the cell of preset multiplex distance is empty set.
If third collection is combined into nonempty set, the PCI of Target cell is determined from third set.Further, choosing in third set makes
Use the least PCI of number as the PCI of Target cell.If third collection is combined into empty set, step 304 is executed.
Step 304: judge to be not included in first set in the second neighboring cell list, and the distance away from Target cell be less than etc.
Whether the 4th set of the composition of the PCI used in the cell of multiplex distance is empty set.
If third collection is combined into empty set, judge to be not included in first set in the second neighboring cell list, and small away from target
Whether the 4th set that the distance in area is less than or equal to the composition of PCI used in the cell of multiplex distance is empty set.If the 4th set
For nonempty set, the PCI of Target cell is determined from the 4th set.Further, choose the 4th set in away from Target cell away from
PCI from PCI used in farthest cell as Target cell.If the 4th collection is combined into empty set, step 305 is executed.
Step 305: choosing the cell belonged in second neighboring cell list and away from the Target cell apart from farthest small
PCI of the PCI used in area as the Target cell.
If the 4th collection is combined into empty set, the cell belonged in second neighboring cell list is chosen and away from the Target cell distance
PCI of the PCI used in farthest cell as the Target cell.
First set, second set, third set, the 4th set, specific meaning and each set in the present embodiment
Between relationship it is as shown in Figure 3.
Such as Fig. 3, set S1 is first set, is that all primary synchronization signal values in step 301 are equal to the first main synchronization
The set that the PCI of signal value is formed.Set S2 is second set, is that access times are in the first set S1 in step 301
The set of zero PCI composition.Set S3 is third set, is that the second adjacent area is not included in first set S1 in step 303
In list, and the distance away from Target cell is greater than the set of the composition of PCI used in the cell of preset multiplex distance.Set S4
As the 4th set, is not included in the second neighboring cell list in first set S1 in step 304, and the distance away from Target cell
The set of the composition of PCI used in cell less than or equal to multiplex distance.Set S5 is to belong to the second adjacent area in first set S1
The set of cell in list.It is exactly chosen from set S5 in step 305 and Target cell is used apart from farthest cell
PCI of the PCI as Target cell.
S6 in Fig. 3 is the set of PCI of the access times more than or equal to 1 in first set S1, and set S7 is small away from target
The distance in area is less than or equal to the set of PCI used in the cell of multiplex distance.
The relationship of each set is as shown, S1 is the complete or collected works of set S2, S3, S4, S5, S6.Second set S2 is that S6 exists
Supplementary set, that is, S2=C in first set S1S1S6.That is, the second set for the PCI that first set S1 is zero by access times
The set S6 of S2 and access times more than or equal to 1 is formed.
Third set S3 is supplementary set of the union of set S7 and set S5 in set S6, i.e. S3=CS6(S7 ∪ S5), the
Four set S4 are supplementary set i.e. S4=C of the intersection of set S7 and set S5 in set S7S7(S7∩S5)。
In the acquisition methods for the physical area PCI that the present embodiment is recorded, set the maximum adjacent area number of Target cell to
Smaller value obtains neighboring cell list.Obtain the least primary synchronization signal value of access times according to the neighboring cell list, from have the master it is same
Walk the PCI that Target cell is chosen in the PCI of signal value.Since the primary synchronization signal value is the least main synchronization of adjacent area access times
Signal value, so the primary synchronization signal value recurrence probability of the PCI of the PCI and adjacent area of the Target cell with the primary synchronization signal value
It is minimum.
Compared with the PCI acquisition methods of existing cell, the cell PCI acquisition methods that the present embodiment is recorded, from one group of tool
There is and determine in the PCI of adjacent area primary synchronization signal value low repeatability the PCI of Target cell, reduces the PCI and neighbour of Target cell
The recurrence probability of the primary synchronization signal of the PCI in area.Meanwhile by this method in conjunction with the acquisition methods of cell PCI in the prior art,
It can guarantee to find out the most suitable PCI of cell under the premise of primary synchronization signal value repetitive rate is low.
Embodiment 3:
The present embodiment records the acquisition system of Physical Cell Identifier PCI a kind of, including obtain module, the first determining module and
Second determining module.
As shown in figure 4, the output end for obtaining module connects the input terminal of the first determining module, the output of the first determining module
The input terminal of the second determining module of end connection.
It obtains module and is used to obtain first neighboring cell list of the Target cell when maximum adjacent area number is the first reference value.
It should be noted that Target cell is the undetermined cell of a PCI, the PCI of Target cell can be by this implementation
The method recorded in example determines.First reference value is the maximum adjacent area number of preset Target cell.First neighboring cell list obtains
Module carries out the adjacent area of Target cell adjacent under conditions of setting the first reference value for the maximum adjacent area number of Target cell
Section planning obtains the first neighboring cell list.
First determining module is used to determine in all primary synchronization signal values in obtaining the first neighboring cell list that module obtains
The least first primary synchronization signal value of the number occurred in PCI used in all cells；
It should be understood that the first determining module obtains the first primary synchronization signal value using Statistical Comparison, but it is not limited to
The method.The first obtained primary synchronization signal value is output to the second result determining module by the first determining module.
Second determining module is used to be equal to the first main synchronous letter that the first determining module obtains in all primary synchronization signal values
Number value PCI formed first set in, determine the PCI of Target cell.
In the acquisition system for the physical area PCI that the present embodiment is recorded, set the maximum adjacent area number of Target cell to
Smaller value obtains neighboring cell list.Obtain the least primary synchronization signal value of access times according to the neighboring cell list, from have the master it is same
Walk the PCI that Target cell is chosen in the PCI of signal value.Since the primary synchronization signal value is the least main synchronization of adjacent area access times
Signal value, so the primary synchronization signal value recurrence probability of the PCI of the PCI and adjacent area of the Target cell with the primary synchronization signal value
It is minimum.
Compared with the PCI of existing cell obtains system, the cell PCI acquisition methods that the present embodiment is recorded, from one group of tool
There is and determine in the PCI of adjacent area primary synchronization signal value low repeatability the PCI of Target cell, reduces the PCI and neighbour of Target cell
The recurrence probability of the primary synchronization signal of the PCI in area.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of acquisition methods of Physical Cell Identifier PCI characterized by comprising
Obtain first neighboring cell list of the Target cell when maximum adjacent area number is the first reference value；
Determine that the number occurred in PCI used in all cells in first neighboring cell list in primary synchronization signal value is minimum
The first primary synchronization signal value；
In the first set that the PCI that primary synchronization signal value is equal to the first primary synchronization signal value is formed, the target is determined
The PCI of cell；
Wherein, the value of the primary synchronization signal value includes 0,1 and 2.
2. the acquisition methods of Physical Cell Identifier PCI according to claim 1, which is characterized in that described in main synchronous letter
Number value be equal to the first primary synchronization signal value PCI formed first set in, determine the PCI of the Target cell, comprising:
If the second set for the PCI composition that all access times are zero in the first set is nonempty set, described second
The PCI of the Target cell is determined in set.
3. the acquisition methods of Physical Cell Identifier PCI according to claim 2, which is characterized in that described in main synchronous letter
Number value be equal to the first primary synchronization signal value PCI formed first set in, determine the PCI of the Target cell, also wrap
It includes:
If the second set is empty set, obtains second adjacent area of the Target cell when maximum adjacent area number is the second reference value and arrange
Table；Second reference value is greater than first reference value；
If all in the first set be not included in second neighboring cell list, and the distance away from the Target cell is greater than
The third collection of the composition of PCI used in the cell of preset multiplex distance is combined into nonempty set, then in the third set really
The PCI of the fixed Target cell.
4. the acquisition methods of Physical Cell Identifier PCI according to claim 3, which is characterized in that it is characterized in that, described
In the first set that the PCI that primary synchronization signal value is equal to the first primary synchronization signal value is formed, the Target cell is determined
PCI, further includes:
If third collection is combined into empty set, judge to be not included in first set in the second neighboring cell list, and the distance away from Target cell
Whether the 4th set of the composition of PCI used in the cell less than or equal to multiplex distance is empty set；
If all in the first set be not included in second neighboring cell list, and the distance away from the Target cell is less than
The 4th collection of the composition of PCI used in cell equal to the multiplex distance is combined into nonempty set, determines in the 4th set
The PCI of the Target cell.
5. the acquisition methods of Physical Cell Identifier PCI according to claim 4, which is characterized in that described in main synchronous letter
Number value be equal to the first primary synchronization signal value PCI formed first set in, determine the PCI of the Target cell, also wrap
It includes:
If the 4th collection is combined into empty set, the cell belonged in second neighboring cell list is chosen and away from the Target cell distance
PCI of the PCI used in farthest cell as the Target cell.
6. a kind of acquisition system of Physical Cell Identifier PCI, which is characterized in that including obtaining module, the first determining module and the
Two determining modules；Wherein,
The module that obtains is used to obtain first neighboring cell list of the Target cell when maximum adjacent area number is the first reference value；
First determining module is used to determine in primary synchronization signal value in the first neighboring cell list that the acquisition module obtains
The least first primary synchronization signal value of the number occurred in PCI used in all cells；
Second determining module is used for
Primary synchronization signal value is equal to the first set that the PCI for the first primary synchronization signal value that first determining module obtains is formed
In, determine the PCI of the Target cell；
Wherein, the value of the primary synchronization signal value includes 0,1 and 2.
7. the acquisition system of Physical Cell Identifier PCI according to claim 6 a kind of, which is characterized in that described second really
Cover half block includes: the first judging submodule, the first determining submodule；
First judging submodule is used to judge the second collection of the PCI composition that all access times are zero in the first set
Whether close is nonempty set；
Described first determines that submodule is used to be the second set in the result that first judging submodule obtains to be non-empty
When set, the PCI of the Target cell is determined from the second set.
8. the acquisition system of Physical Cell Identifier PCI according to claim 7 a kind of, which is characterized in that described second really
Cover half block further include: acquisition submodule, second judgment submodule, second determine submodule；
If the acquisition submodule is empty set for the second set, obtaining Target cell in maximum adjacent area number is the second ginseng
Examine the second neighboring cell list when value；Second reference value is greater than first reference value；
The second judgment submodule for judge it is all in the first set be not included in second neighboring cell list, and
Whether the third set that the distance away from the Target cell is greater than the composition of PCI used in the cell of preset multiplex distance is non-
Null set；
Described second determines that submodule is used in the result that the second judgment submodule obtains be that the third collection is combined into non-empty
When set, the PCI of the Target cell is determined from the third set.
9. the acquisition system of Physical Cell Identifier PCI according to claim 8 a kind of, which is characterized in that described second really
Cover half block further include: third judging submodule, third determine submodule；
If the third judging submodule is combined into empty set for third collection, judge in the first set it is all be not included in it is described
In second neighboring cell list, and the distance away from the Target cell is less than or equal to PCI group used in the cell of the multiplex distance
Nonempty set is combined at the 4th collection；
The third determines that result of the submodule for obtaining in the third judging submodule is that the 4th collection is combined into non-empty
When set, the PCI of the Target cell is determined from the 4th set.
10. the acquisition system of Physical Cell Identifier PCI according to claim 9 a kind of, which is characterized in that described second really
Cover half block further include: the 4th determines submodule；
Described 4th determines that submodule is used in the result that the third judging submodule obtains be that the 4th collection is combined into empty set
When, selection belongs to second neighboring cell list and described in being used as away from Target cell PCI used in the farthest cell
The PCI of Target cell.
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