CN102740300B - The auto-allocation method and device of physical-layer cell identifier - Google Patents
The auto-allocation method and device of physical-layer cell identifier Download PDFInfo
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- CN102740300B CN102740300B CN201210220468.2A CN201210220468A CN102740300B CN 102740300 B CN102740300 B CN 102740300B CN 201210220468 A CN201210220468 A CN 201210220468A CN 102740300 B CN102740300 B CN 102740300B
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Abstract
The present invention provides the auto-allocation methods and device of a kind of physical-layer cell identifier (PCI), wherein, this method comprises: for each PCI in multiple PCI, calculate separately the multiplexing coefficient of the cell and all cells for having used the PCI of PCI to be allocated, wherein, multiplexing coefficient is used to indicate the relative positional relationship of the first community and the cell for having used the PCI of PCI to be allocated；Determine the maximum multiplexing coefficient of each PCI；Select preset number PCI to cell from multiple PCI according to the sequence from big to small for all maximum multiplexing coefficients determined.The present invention solves the problems, such as that the distribution error rate of PCI in the related technology is high, network O&M is at high cost, to reduce the probability of error, improves the reliability arranged net, meanwhile, the human input of network planning network optimization is reduced, the O&M cost of operator is reduced.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of physical-layer cell identifier (Physical Cell
Identity, referred to as PCI) auto-allocation method and device.
Background technique
L1 mark (Phy-CID, Physical Cell Identity, referred to as PCI) is physical cell identity in other words
The important configuration parameters of wireless area, share 504 in long term evolution (Long-Term Evolution, referred to as LTE) system
Physical cell identity.And the quantity of wireless area will be far longer than the range of PCI mark, therefore, the PCI multiplexing between cell is just
It is inevitable.But third generation mobile Partnership Program (3rd Generation partnership project,
Referred to as 3GPP) regulation PCI cannot conflict, obscure in technical specification, wherein and the PCI of the conflict neighboring community Ji Liangge is identical, mixes
Confuse and refer to that the PCI of the neighboring community Liang Ge an of cell is identical, otherwise user equipment (User Equipment, referred to as UE) nothing
Method identifies cell, and therefore, the multiplexing of PCI just needs to follow Lothrus apterus, aliasing free principle.If PCI not within the scope of or
Person does not have cell PCI, then base station can not provide business.Multiplexing how efficiently to complete PCI is guaranteeing Lothrus apterus, is obscuring
Saving PCI resource simultaneously is problem to be solved in LTE system.Current method is all to use the method manually planned for base
Plan that PCI, the PCI of planning need to guarantee to conflict, cannot obscure in station.The network optimization is needed when clashing, obscuring
Personnel re-start the optimization of PCI.However, cell is numerous in network, using artificial planning PCI, it will increase the probability of error, drop
The low reliability arranged net, meanwhile, the human input of network planning network optimization is big, improves the O&M cost of operator.
Aiming at the problem that at least one above-mentioned in the related technology, currently no effective solution has been proposed.
Summary of the invention
The present invention provides a kind of auto-allocation method of physical-layer cell identifier and devices, at least to solve the relevant technologies
The problem that the distribution error rate of middle PCI is high, network O&M is at high cost.
According to an aspect of the invention, there is provided a kind of auto-allocation method of PCI comprising: in multiple PCI
Each PCI, calculate separately the multiplexing coefficient of the cell of PCI to be allocated with all cells for use the PCI, wherein answer
It is used to indicate the relative positional relationship of cell with the cell for having used the PCI with coefficient；Determine the maximum multiplexing system of each PCI
Number；According to the sequences from big to small for all maximum multiplexing coefficients determined selected from multiple PCI preset number PCI to
Cell.
Preferably, it for each PCI in multiple PCI, calculates separately the cell of PCI to be allocated and has used and be somebody's turn to do
Before the multiplexing coefficient of all cells of PCI, the auto-allocation method of above-mentioned PCI further include: select one from not used PCI
A or multiple PCI are to cell.
Preferably, the multiplexing coefficient for having used all cells of the PCI is calculated according to following one information: having been made
With all cells of the PCI and the distance between the cell of PCI to be allocated；Used all cells of the PCI with it is to be allocated
The distance between cell of PCI and the relative angle weight between all cells of the PCI and cell is used.
Preferably, the multiplexing coefficient for having used all cells of the PCI: R=D+K*A is calculated according to the following formula,
In, R is the multiplexing coefficient for having used all cells of the PCI, and D is to have used between all cells of the PCI and cell
Distance, A is the relative angle weight used between all cells of the PCI and cell, and K is preconfigured value.
Preferably, multiple PCI are the PCI other than having generated conflict or the PCI obscured.
Preferably, all cells are the cell of frequency point identical as cell.
Preferably, it is selected from multiple PCI according to the sequence from big to small for all maximum multiplexing coefficients determined
Preset number PCI gives after above-mentioned cell, the auto-allocation method of above-mentioned PCI further include: the case where preset number is greater than 1
Under, preset number PCI and/or the PCI selected from not used PCI are sent to base station belonging to cell；Base station is from pre-
If selecting a PCI in the number PCI and/or not used PCI selected for above-mentioned cell.
Preferably, the auto-allocation method of above-mentioned PCI further include: base station is established by X2 and X2 updates the use to PCI
State is detected；In the case where base station detects the cell of PCI to be allocated, base station is according to testing result from preset number
A PCI and from the PCI selected in not used PCI is that above-mentioned cell selects an available PCI, and by the knot of selection
Fruit is reported to network management.
Preferably for each PCI in multiple PCI, network management calculates separately the cell of PCI to be allocated and has used and is somebody's turn to do
The multiplexing coefficient of all cells of PCI, wherein multiplexing coefficient is used to indicate the cell of PCI to be allocated and has used the PCI's
The relative positional relationship of cell；Network management determines the maximum multiplexing coefficient of each PCI；Network management is according to all maximum multiplexings determined
The sequence from big to small of coefficient selects preset number PCI to cell from multiple PCI.
Preferably, the sequences from big to small of coefficients are multiplexed from multiple PCI according to all maximums determined in network management
After selection preset number PCI is to cell, the auto-allocation method of above-mentioned PCI further include: the case where preset number is 1
Under, the PCI distributed for above-mentioned cell is sent to the network element of the cell by network management.
Preferably, the auto-allocation method of above-mentioned PCI further include: base station is established by X2 and X2 updates the use to PCI
State is detected；In the case where preset number is 1, and in the case where base station detects the cell of PCI to be allocated, base
Station will test result and be reported to network management, and network management is above-mentioned cell distribution PCI according to testing result.
Preferably, network management be according to testing result cell distribution PCI include: network management determine testing result be clash or
In the case where obscuring, network management selects cell of the cell as PCI to be allocated from the cell centering for clashing or obscuring,
In, the cell is most for number is clashed or obscured in cell pair, and the least cell of call setup number；Network management is
The cell distributes PCI.
Preferably, the auto-allocation method of above-mentioned PCI further include: base station is established by X2 and X2 updates the use to PCI
State is detected；In the case where preset number is greater than 1, and in the case where base station detects that cell does not have available PCI,
Base station will test result and be reported to network management, and network management is that above-mentioned cell redistributes PCI according to testing result.
Preferably, network management is that above-mentioned cell is distributed after PCI, the auto-allocation method of above-mentioned PCI further include: network management will be
The PCI information of above-mentioned cell distribution is shown in self-organizing network monitoring；Network management receive confirmation continue instruction after, issue for
The PCI of cell distribution.
Preferably, network management is that cell is distributed after PCI, the auto-allocation method of above-mentioned PCI further include: network management will be above-mentioned
The PCI information of cell distribution is shown in self-organizing network monitoring；The PCI that network management issues as cell distribution.
According to another aspect of the present invention, the automatic allocation device of PCI a kind of is provided comprising: computing module is used for
To each PCI in multiple PCI, the multiplexing system of the cell and all cells for having used the PCI of PCI to be allocated is calculated separately
Number, wherein multiplexing coefficient is used to indicate the relative positional relationship of the cell and the cell for having used the PCI of PCI to be allocated；Really
Cover half block, for determining the maximum multiplexing coefficient of each PCI；Distribution module, for according to all maximum multiplexing systems determined
Several sequences from big to small selects preset number PCI to above-mentioned cell from multiple PCI.
In the present invention, it for each PCI in multiple PCI, calculates separately the cell of PCI to be allocated and has used and be somebody's turn to do
Multiplexing coefficient between all cells of PCI and the first community of PCI to be allocated, the multiplexing coefficient is for indicating PCI to be allocated
Cell with use the PCI cell relative positional relationship, be multiplexed coefficient it is higher, reliability is higher, that is, clash,
The probability obscured is smaller, then, it is determined that the maximum multiplexing coefficient of each PCI, finally, according to all maximum multiplexing systems determined
Several sequences from big to small selects preset number PCI to cell from multiple PCI, with ensure to distribute to the maximum extent
The reliability of PCI improves the reliability arranged net to reduce the probability of PCI distribution error, meanwhile, reduce the people of network planning network optimization
Power investment, reduces the O&M cost of operator.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the auto-allocation method of PCI according to an embodiment of the present invention；
Fig. 2 is the structural block diagram of the automatic allocation device of PCI according to an embodiment of the present invention；
Fig. 3 is the flow chart of the auto-allocation method of another kind PCI according to an embodiment of the present invention；
Fig. 4 is the flow chart for the method that PCI list according to an embodiment of the present invention distributes automatically；
Fig. 5 is the interaction diagrams according to an embodiment of the present invention with SON monitoring；
Fig. 6 is the structural block diagram of the distributor of another kind PCI according to an embodiment of the present invention；
Fig. 7 is the signal of the relativeness of the deflection of two cells used in PCI distribution according to an embodiment of the present invention
Figure；
Fig. 8 is the initially allocated flow chart of PCI according to an embodiment of the present invention；
Fig. 9 is the process flow diagram of conflict confusion message according to an embodiment of the present invention；And
Figure 10 is PCI invalid value according to an embodiment of the present invention or the process flow diagram of unallocated PCI.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
The auto-allocation method of PCI a kind of is present embodiments provided, as shown in Figure 1, the auto-allocation method of the PCI includes
Step S102 to step S106.
Step S102: it for each PCI in multiple PCI, calculates separately the cell of PCI to be allocated and has used and be somebody's turn to do
The multiplexing coefficient of all cells of PCI, wherein multiplexing coefficient is used to indicate the cell of PCI to be allocated and has used the PCI's
The relative positional relationship of cell.
Step S104: the maximum multiplexing coefficient of each PCI is determined.
Step S106: it is selected from multiple PCI according to the sequence from big to small for all maximum multiplexing coefficients determined
Preset number PCI is to cell.
Through the above steps, for each PCI in multiple PCI, calculate separately used all cells of the PCI with
Multiplexing coefficient between the cell of PCI to be allocated, the multiplexing coefficient are used to indicate the cell of PCI to be allocated and have used to be somebody's turn to do
The relative positional relationship of the cell of PCI, multiplexing coefficient is higher, and reliability is higher, that is, it is smaller to clash the probability obscured, so
Afterwards, the maximum multiplexing coefficient of each PCI is determined, finally, according to from big to small suitable for all maximum multiplexing coefficients determined
Sequence selects preset number PCI to cell from multiple PCI, with the reliability for the PCI for ensuring to distribute to the maximum extent, to drop
The probability of low PCI distribution error, improves the reliability arranged net, meanwhile, the human input of network planning network optimization is reduced, operator is reduced
O&M cost.
Preferably, before the distribution for carrying out above-mentioned PCI, the cell information of the cell of PCI to be allocated is first obtained, for example,
The cell of the information such as cell ID, frequency point, longitude and latitude, deflection and original PCI value and the above-mentioned cell for having used the PCI
Information, for example, the information such as cell ID, frequency point, longitude and latitude and deflection, in order to accurately calculate the cell of PCI to be allocated
With the multiplexing coefficient for all cells for having used the PCI.
Preferably, the distribution method of above-mentioned PCI can use under the scene of no not used PCI, can also deposit
It is used under the scene of not used PCI, meets the demand of different application scene.
For the efficiency for improving PCI distribution, the reliability of PCI distribution is improved, in the preferred embodiment, for multiple
Each PCI in PCI, calculate separately the cell of PCI to be allocated and all cells for having used the PCI multiplexing coefficient it
Before, select one or more PCI to the cell of above-mentioned PCI to be allocated from not used PCI.I.e. as all PCI(, that is, existing
504 PCI) in there are when not used PCI, preferentially select PCI from not used PCI for cell.For example, when being above-mentioned
Cell is distributed under the scene of a PCI, not used PCI is preferentially judged whether there is, if it is present can be not used
Select a PCI to above-mentioned cell in PCI, if it does not exist, then being according to multiplexing in the auto-allocation method for passing through above-mentioned PCI
Number distributes PCI for cell, at this point, above-mentioned preset number is 1；It is excellent under scene for the estimated multiple PCI of distribution of above-mentioned cell
Not used PCI is first judged whether there is, if it does, it is estimated to judge whether the number of existing not used PCI is greater than again
The number of PCI is distributed, if it is greater, then can directly be estimated PCI of above-mentioned cell selection from not used PCI, as
The candidate PCI of cell after can choose whole not used PCI, then passes through the distribution method of above-mentioned PCI if fruit is less than
It is middle according to multiplexing coefficient be cell select PCI, at this point, above-mentioned preset number be expected to be cell distribution PCI number subtract
The number of seleced not used PCI.
Preferably, not used PCI can not also be judged whether there is, root in the distribution method of above-mentioned PCI is directly passed through
To select PCI for cell according to multiplexing coefficient, at this point, then preset number is 1, if in advance if it is expected that distributing 1 PCI for cell
Be calculated as PCI and distribute multiple PCI, then above-mentioned preset number with it is expected that number it is identical.
It has been used in the preferred embodiment according to following one information to calculate to improve the reliability of PCI distribution
The multiplexing coefficient of all cells of the PCI: the distance between all cells and cell of the PCI have been used；Having used should
The distance between all cells of PCI and cell and the relative angle between all cells of the PCI and cell is used to weigh
Value.
It, can be not used there is no not used PCI or existing in all PCI in above preferred embodiment
When the number of PCI is less than the number for needing the PCI distributed for cell, the institute for having used the PCI is calculated by above- mentioned information
There is the multiplexing coefficient of cell Yu PCI cell to be allocated, it is ensured that the reliability of PCI distribution reduces PCI and conflict occurs, obscure
Probability.
Preferably, all cells of the PCI and answering for PCI cell to be allocated have been used calculating by above- mentioned information
It during with coefficient, can realize in the following ways, R=D+K*A, wherein R is all cells for having used the PCI
Multiplexing coefficient, D is the distance between all cells for having used the PCI and above-mentioned cell, and A is to have used the PCI's
Relative angle weight between all cells and above-mentioned cell, K are preconfigured value.
In order to further improve the reliability of PCI distribution, in the preferred embodiment, above-mentioned multiple PCI are in addition to
The PCI except conflict or the PCI obscured is generated, i.e., above-mentioned multiple PCI are a part in all PCI, for example, above-mentioned multiple
PCI is that all PCI subtract the PC for having generated conflict or having obscured, to effectively improve the reliability of PCI distribution.
Adequately, PCI is effectively distributed, in the preferred embodiment, the above-mentioned all cells for having used multiple PCI
For the cell of frequency point identical as cell.
In order to meet the needs of different application scene, in the preferred embodiment, all maximum multiple according to what is determined
With the sequence from big to small of coefficient from selected in multiple PCI preset number PCI to cell after, in preset number greater than 1
In the case where, preset number PCI and/or the PCI selected from not used PCI are sent to base station belonging to cell；Base
It stands from preset number PCI and/or the not used PCI selected (for example, being above-mentioned small directly from not used PCI
It when area selects multiple spare PCI, is then come for one PCI of cell selection using directly answering from the not used PCI selected
It is then from preset number PCI is that above-mentioned cell selects one in aforementioned manners by multiplexing coefficient come in the case where selecting PCI
A PCI come using, if there are not used PCI, and of the number of not used PCI less than the spare PCI of above-mentioned cell
In the case where number, then PCI is first selected from not used PCI, then PCI is selected by the multiplexing coefficient in the above method, this
When from preset number PCI and the not used PCI selected for above-mentioned cell select a PCI come using) for cell selection
One PCI.Preset number PCI and/or the PCI selected from not used PCI are being sent to base station belonging to cell
Afterwards, it selects a PCI to use for cell from the PCI distributed by base station, realizes and distribute multiple spare PCI for cell,
That is the distributed allocation of PCI, when cell needs reselect the PCI used, base station can be small from above-mentioned spare PCI
Area reselects a PCI, for example, in the course of network operation, when base station detects that above-mentioned cell needs to reselect PCI and makes
Used time (for example, detect conflict, cell, the cell of PCI failure obscured etc.), base station then can be directly from above-mentioned spare
A PCI is reselected in PCI for the cell.
In order to ensure the use state of the PCI of network cell, in the preferred embodiment, the automatic distribution side of above-mentioned PCI
Method further include: base station is established by X2 and X2 update detects the use state of PCI；It has been detected in base station to be allocated
In the case where the cell of PCI, what base station was selected from preset number PCI and or from not used PCI according to testing result
It is that above-mentioned cell selects an available PCI, and the result of selection is reported to network management in PCI.
In above preferred embodiment, in the course of network operation, in order to realize the optimization of network PCI, base station passes through X2
It establishes and X2 update detects the use state of PCI, can be to detect whether conflict, obscure appearance, if having certain small
The phenomenon that PCI failure in area, when detecting above-mentioned any phenomenon, (for example, detecting conflict, the cell obscured, PCI lose
The cell etc. of effect), under the scene for the distributed allocation that the cell is PCI, i.e., the cell is assigned spare PCI, then base station
Directly a PCI is reselected from preset number PCI and or from the i.e. spare PCI of the PCI(selected in not used PCI)
It is used to the cell, then, the result after distribution is reported to network management by base station, and network management shows allocation result in SON control
In the heart.
In order to which the network O&M cost of PCI distribution is effectively reduced, the accuracy rate of low PCI distribution is improved, in this preferred implementation
In example, for each PCI in multiple PCI, network management calculates separately the cell of PCI to be allocated and has used owning for the PCI
The multiplexing coefficient of cell, wherein multiplexing coefficient is used to indicate the phase of the cell and the cell for having used the PCI of PCI to be allocated
To positional relationship；Above-mentioned network management determines the maximum multiplexing coefficient of each PCI；Above-mentioned network management is according to all maximum multiplexings determined
The sequence from big to small of coefficient selects preset number PCI to cell from multiple PCI.
In above preferred embodiment, realizes and distribute PCI automatically by network, avoid passing through and manually plan base station
PCI improves the accuracy rate of low PCI distribution so that the network O&M cost of PCI distribution be effectively reduced.
In order to improve the flexibility of the present embodiment, in the preferred embodiment, in network management according to all maximums determined
Be multiplexed coefficient sequence from big to small from multiple PCI select preset number PCI to cell after, preset number be 1
In the case where, the PCI distributed for cell is sent to the network element of cell by network management.It needs for the small differentiation of above-mentioned PCI to be allocated
When with 1 PCI, the PCI distributed is synchronized to the network element of cell by network management, i.e. centralised allocation mode is distributed PCI for cell.
In the course of network operation, in order to realize the optimization of network PCI, in the preferred embodiment, above-mentioned PCI's is automatic
Distribution method further include: base station is established by X2 and X2 update detects the use state of PCI；It is 1 in preset number
In the case of, and in the case where base station detects the cell of above-mentioned PCI to be allocated, base station will test result and be reported to network management,
Network management is cell distribution PCI according to testing result.
In above preferred embodiment, in the course of network operation, in order to realize the optimization of network PCI, base station passes through X2
It establishes and X2 update detects the use state of PCI, can be to detect whether conflict, obscure appearance, if having certain small
The phenomenon that PCI failure in area, when detecting above-mentioned any phenomenon, (for example, detecting conflict, the cell obscured, PCI lose
The cell etc. of effect), under the scene for the centralised allocation that the cell is PCI, base station will test result and be reported to network management, by network management
To redistribute PCI according to testing result for above-mentioned cell.
In order to improve the reliability of PCI distribution, in the preferred embodiment, network management is above-mentioned small differentiation according to testing result
It include: that network management determines that testing result is in the case where clashing or obscuring with PCI, network management is from the cell for clashing or obscuring
Centering selects a cell as the cell of above-mentioned PCI to be allocated, wherein the cell of the PCI to be allocated is cell centering generation
Conflict or to obscure number most, and the least cell of call setup number；The cell that network management is the PCI to be allocated is distributed
PCI。
In above preferred embodiment, when occurring the phenomenon that base station has detected conflict, obscured, there is conflict, obscures
Cell PCI be centralised allocation mode when, it (includes the letter for the cell pair for clashing, obscuring that base station, which will test result,
Breath) it is reported to network management, network management from cell centering selects one, and to clash or obscure number most, and call setup number is minimum
Cell of the cell as PCI to be allocated to reduce PCI occur conflict to be again that the cell distributes PCI, obscure
Probability.
In the course of network operation, in order to realize the optimization of network PCI, in the preferred embodiment, above-mentioned PCI's is automatic
Distribution method further include: base station is established by X2 and X2 update detects the use state of PCI；It is greater than 1 in preset number
In the case where, and in the case where base station detects that cell does not have available PCI, base station will test result and be reported to network management, net
Pipe redistributes preset number PCI according to testing result for cell.I.e. in the cell for detecting distribution PCI in need, and should
The PCI of cell is distributed allocation mode, and in the case where detecting that the cell does not have spare PCI, base station will test result and report
It is that above-mentioned cell redistributes PCI by network management to network management.
In order to meet the needs of different application scene, in the preferred embodiment, network management is the cell of above-mentioned PCI to be allocated
It distributes after PCI, network management shows the PCI information distributed for above-mentioned cell in self-organizing network monitoring；It is small that network management, which issues,
The PCI information distributed is handed down to base station when for centralised allocation mode by the PCI information of area's distribution, is divided when for distribution
When with mode, the PCI information distributed is handed down to the base station where above-mentioned cell；Or network management will distribute for above-mentioned cell
PCI information is shown in self-organizing network monitoring；After network management receives the instruction that confirmation continues, the PCI for cell distribution is issued,
The PCI information displaying that above-mentioned cell is distributed is after self-organizing network monitoring is upper, when user, which confirms, continues next step, then
The PCI that network management issues as the distribution of above-mentioned cell, when user terminates, user, which can choose, carries out manual allocation PCI, at this point, on
The process for stating distribution PCI terminates.
Preferably, in the lte networks, propose self-organizing network (self organizing network, referred to as
SON concept), i.e. network parameter can be automatically configured and be adjusted, and the distribution method of above-mentioned PCI can be carried out with self-organizing network
Interaction, the PCI information of distribution is shown by SON monitoring, user can according to need to choose whether to continue above-mentioned point
The process of method of completing the square, to reduce the cost of network O&M.
In the preferred embodiment, the automatic allocation device of preferred PCI a kind of is provided, as shown in Fig. 2, the PCI
Distributor includes: computing module 202, for for each PCI in multiple PCI, calculate separately the cell of PCI to be allocated with
Used the multiplexing coefficient of all cells of the PCI, wherein multiplexing coefficient be used to indicate the cell of above-mentioned PCI to be allocated with
The relative positional relationship of the cell of the PCI is used；Determining module 204 is connected to computing module 202, each for determining
The maximum multiplexing coefficient of PCI；Distribution module 206 is connected to determining module 204, for according to all maximum multiplexings determined
The sequence from big to small of coefficient selects preset number PCI to cell from multiple PCI.
In above preferred embodiment, for each PCI in multiple PCI, computing module 202, which calculates separately, have been used
Multiplexing coefficient between all cells of the PCI and the cell of PCI to be allocated, the multiplexing coefficient is for indicating PCI's to be allocated
The relative positional relationship of cell and the cell for having used the PCI, multiplexing coefficient is higher, and reliability is higher, that is, clashes mixed
The probability to confuse is smaller, and determining module 204 determines the maximum multiplexing coefficient of each PCI, and then, distribution module 206 is according to determining
The sequences from big to small of all maximum multiplexing coefficients select preset number PCI to cell from multiple PCI, with maximum limit
Degree ground ensures that the reliability of the PCI distributed improves the reliability arranged net to reduce the probability of error, meanwhile, reduce network planning net
Excellent human input reduces the O&M cost of operator.
For the efficiency for improving PCI distribution, the reliability of PCI distribution, in the preferred embodiment, above-mentioned distribution module are improved
206 are also used to select one or more PCI to the cell of above-mentioned PCI to be allocated from not used PCI.
For the reliability for improving PCI distribution, in the preferred embodiment, computing module 202 is also used to according to following one
Information calculates the multiplexing coefficients of all cells Yu PCI cell to be allocated that have used the PCI: having used the institute of the PCI
There are the distance between cell and cell；It has used the distance between all cells and cell of the PCI and has used the PCI
All cells and cell between relative angle weight.
Preferably, during calculating the multiplexing coefficient for having used all cells of the PCI by above- mentioned information,
Computing module 202 is also used to realize in the following ways, R=D+K*A, wherein R is to have used owning for the PCI
The multiplexing coefficient of cell, D are to have used the distance between all cells and cell of the PCI, and A is to have used the PCI's
Relative angle weight between all cells and cell, K are preconfigured value.
In order to meet the needs of different application scene, in the preferred embodiment, the automatic allocation device of above-mentioned PCI is also wrapped
Include: the first sending module is connected to distribution module 206, for according to all maximum multiplexing coefficients for determining from greatly to
Small sequence from selected in multiple PCI preset number PCI to cell after, in the case where preset number is greater than 1, will preset
Number PCI and/or the PCI selected from not used PCI are sent to base station belonging to cell, so that base station is from preset number
(for example, more for the selection of above-mentioned cell directly from not used PCI in a PCI and/or above-mentioned not used PCI selected
It is then to select a PCI to come using directly using above-mentioned side for cell from the not used PCI selected when a spare PCI
Method be then from preset number PCI is that above-mentioned cell selects a PCI come in the case where selecting PCI by multiplexing coefficient
It uses, if there are not used PCI, and the case where number of the number of not used PCI less than above-mentioned cell spare PCI
Under, then PCI is first selected from not used PCI, then PCI is selected by the multiplexing coefficient in the above method, at this time from default
In the number PCI and not used PCI selected for above-mentioned cell select a PCI come using) for cell select a PCI.
In order to improve the flexibility of the present embodiment, in the preferred embodiment, the automatic allocation device of above-mentioned PCI is also wrapped
Include: the second sending module is connected to distribution module 206, in the case where preset number is 1, the PCI that will be distributed for above-mentioned cell
The network element being sent to where cell, for example, the base station where above-mentioned cell.
In order to improve the reliability of PCI distribution, in the preferred embodiment, the automatic allocation device of above-mentioned PCI further include:
Selecting module, for after receiving the testing result that base station reports, determining that testing result is the case where clashing or obscure
Under, under the scene for the centralised allocation that the cell is PCI, select a cell to make from the cell centering for clashing or obscuring
For the cell of above-mentioned PCI to be allocated, wherein the cell of the PCI to be allocated is most for number is clashed or obscured in cell pair,
And the least cell of call setup number；Above-mentioned distribution module 206 is also used to distribute for the cell of the PCI to be allocated
PCI。
In order to meet the needs of different application scene, in the preferred embodiment, the automatic allocation device of above-mentioned PCI is also wrapped
Include: display module is connected to distribution module 206, and the PCI information for that will be above-mentioned cell distribution is shown in self-organizing network prison
In control；First sending module or the second sending module, are connected to display module, are also used to issue the PCI information for cell distribution.
Or first sending module or the second sending module, it is connected to display module, after being also used to receive the instruction that confirmation continues, under
Hair is the PCI of above-mentioned cell distribution.
Above-mentioned each preferred embodiment is described in detail below in conjunction with attached drawing.
The distribution method of above-mentioned PCI is mainly used for two kinds of scenes, the first is the whole network or part website when initially arranging net
The automatic distribution of PCI is for second the PCI optimization during the network operation, and including following several situations: newly one base of deployment
Stand or the automatic distribution of a cell PCI, during the network operation PCI clash PCI when obscuring redistribute and
Cell does not have PCI or PCI when being invalid value, and PCI is redistributed, for there are two types of the PCI distribution again during the network operation
Mode is concentrated one is Network Management System and distributes an available PCI automatically for conflict or the cell obscured, another is net
Network management system is that base station issues available PCI list, obscures or occur base when PCI is distribution or is invalid when clashing
It stands and available PCI oneself is selected to use in available PCI list.
In the present embodiment, for distributing 1 PCI, Fig. 3 is the stream that PCI according to an embodiment of the present invention is distributed automatically
Cheng Tu, as shown in figure 3, distributively process includes step S302 to step S310 to the PCI automatically.
S302: network management obtains the cell letter for the cell (cell for being equivalent to above-mentioned PCI to be allocated) for needing to distribute PCI
Breath, for example, the information such as cell ID, frequency point, longitude and latitude, deflection and original PCI value.
S304: network management obtains the cell information of all frequency points identical as the cell of PCI to be allocated, for example, cell ID, frequency
The information such as point, longitude and latitude and deflection.
S306: with PCI be index, be equivalent to above-mentioned multiple PCI according to PCI() access times from small to large sequence (when
So it is also possible to sequence from big to small, i.e., is arranged successively according to the size of PCI access times) it is arranged, judge whether to deposit
It is 0) that then therefrom selecting a multiplexing number is 0 if there is not used PCI(, that is, multiplexing number in not used PCI
PCI is used to new cell (cell for being equivalent to PCI to be allocated), if there is no not used PCI, then goes to step S308.
S308: for above-mentioned multiple PCI, network management successively calculates the multiplexing of new cell and all cells using each PCI
Coefficient, multiplexing coefficient is higher between cell, then the reliability for being multiplexed PCI is higher.The method of calculating is: RAB=DAB+K*AAB,
The value of middle K is configured by user by Network Management System, DABIndicate that cell A to the linear distance of cell B, needs basis
Longitude and latitude is calculated, AABIndicate that the relative angle weight of area A and cell B, relative angle weight are carried out according to the table 1 in annex
Value, it is preferable that for allocation algorithm, user can according to need selection and be carried out based on distance or based on distance and angle
The multiplexing of PCI, K value indicate the influence coefficient of angle, the highest cell of multiplexing coefficient of each PCI are found out, then, to upper
It states the multiplexing coefficient found out to be sized, judges whether that there is also untreated PCI, if so, step S308 is then repeated,
If it does not exist, then going to step S310.
Step S310: network management selects highest multiplexing coefficient from the multiplexing coefficient found out, and the multiplexing coefficient is corresponding
The PCI that uses of cell distribute to the cell of PCI to be allocated.Preferably, network management is raw to network element by newly assigned PCI automatic synchronization
The PCI of distribution is handed down to base station by effect or network management, and base station resets cell PCI, and will setting result report network management (for
The PCI initially to arrange net is distributed automatically and is not needed to be synchronized to network element, by user by hand by the whole table of all configuration datas after being assigned
Network element is synchronized to come into force), PCI is set if it is base station, then network management updates corresponding PCI and the result for distributing PCI automatically is shown
In SON monitoring.
In the present embodiment, for distributing PCI list, Fig. 4 is that PCI list according to an embodiment of the present invention distributes automatically
Flow chart, as shown in figure 4, distributively process includes step S402 to step S410 automatically for the PCI list.
S402: network management obtains the cell information for needing to distribute PCI list, for example, cell ID, frequency point, longitude and latitude, deflection
And the information such as original PCI value.
S404: network management obtains the cell information of all frequency points identical as PCI list cell to be allocated, for example, cell ID, frequency
The information such as point, longitude and latitude and deflection.
S406: with PCI be index, be equivalent to above-mentioned multiple PCI according to PCI() access times from small to large sequence (when
So it is also possible to sequence from big to small, i.e., is arranged successively according to the size of PCI access times) it is arranged, judge whether to deposit
It is 0), to judge whether the number of not used PCI is big if there is not used PCI(, that is, multiplexing number in not used PCI
In N(N indicate PCI list in PCI number, can configure), if so, therefrom select N number of multiplexing number for 0 PCI to newly
Cell (cell for being equivalent to above-mentioned PCI to be allocated) uses, and if there is no not used PCI or there are not used PCI
Number is less than N, then goes to step S408.
Step S408: for above-mentioned multiple PCI, network management successively calculates new cell and all cells using each PCI
Multiplexing coefficient matrix, reusability coefficient is higher between cell, then the reliability for being multiplexed PCI is higher.The method of calculating is: RAB
=DAB+K*AAB, wherein the value of K by configuring from the background, DABIndicate that cell A to the linear distance of cell B, is needed according to longitude and latitude
It is calculated, AABIndicate that the relative angle weight of area A and cell B, relative angle weight carry out value according to the table 1 in annex,
Then the highest cell of multiplexing coefficient for finding out each PCI is sized the above-mentioned multiplexing coefficient found out, sentences
Disconnected whether there is also untreated PCI, if so, step S408 is then repeated, if it does not exist, then going to step S410.
Step S410: network management selects top n or the N-M high PCI of multiplexing coefficient to newly from the multiplexing coefficient found out
Cell uses, and above-mentioned M is the not used PCI number selected.Preferably, network management is by newly assigned PCI automatic synchronization to network element
It comes into force or the PCI of distribution is handed down to base station by network management, base station resets cell PCI, and reports network management (right setting result
It is distributed automatically in the PCI initially to arrange net and does not need to be synchronized to network element, it is by hand that all configuration datas are whole by user after being assigned
Table is synchronized to network element and comes into force), if it is base station, PCI, then the result exhibition that network management updates corresponding PCI and distributes PCI automatically are set
Show in SON monitoring.
Fig. 5 is the interaction diagrams according to an embodiment of the present invention with SON monitoring, as shown in figure 5, should be monitored with SON
Interaction flow includes step S502 step S14.
Step S502:SON monitoring unit receives the allocation result message of allocation unit transmission.
Step S504: judging whether it is controlled mode, if it is, step S506 is gone to, if it is not, then going to step
S512。
Step S506: judging whether user confirms continuation, if it is, step S508 is gone to, if it is not, then process knot
Beam.
Step S508: judging whether to need to modify allocation result, if it is not, then step S510 is gone to, if it is, will use
The PCI of family setting is as the PCI that comes into force.
Step S510: using the PCI distributed automatically as the PCI to come into force.
Step S512: issuance unit, which resets cell PCI and is synchronized to base station, to come into force, while result being shown in SON
On monitoring center or the PCI of distribution is issued base station by network management, and base station resets and result is reported network management after the PCI of cell.
Step S514: PCI, the result exhibition that network management updates corresponding PCI and distributes PCI automatically are reset if it is base station
Show in SON monitoring.
Fig. 6 is the structural block diagram of the distributor of another kind PCI according to an embodiment of the present invention, as shown in fig. 6, the PCI
Distributor include: receiving unit 602, allocation unit 604(be equivalent to above-mentioned computing module 202, determining module 204 and
Distribution module 206), issuance unit 606(is equivalent to above-mentioned first sending module and the second sending module) and SON control unit
608。
It in the present embodiment, is that PCI according to an embodiment of the present invention initially divides with reference to Fig. 3, Fig. 5, Fig. 6 and Fig. 7, Fig. 8
The flow chart matched, as shown in figure 8, the initially allocated process of the PCI includes step S802 to step S820.
Step S802: importing the engineering parameter of all base stations by network management, and longitude and latitude, antenna including all cells incline
Angle, sector etc..
Step S804: importing all layout datas of base station by network management system, needs to set PCI in layout data certainly
The switch of distribution is moved, or newly increase a base station and cell by network management system in operational network (planning can be passed through
Parameterized template imports, and can also be added by hand).
Step S806: the PCI that network management reads cell distributes switch automatically, is then cell according to the following steps if opening
Automatic distribution PCI then goes to step S820 if closing.
Step S808 to step S816 is the same as the step S308 to step S316 in Fig. 3.
Step S808: allocation unit obtains the cell information for needing to distribute PCI, including cell ID, frequency point, longitude and latitude, side
To the information such as angle and original PCI value.
Step S810: network management obtain all frequency points identical as the cell of PCI to be allocated cell information (including cell ID,
The information such as frequency point, longitude and latitude and deflection).
Step S812: it is index with PCI, is equivalent to above-mentioned multiple PCI according to PCI() sequence of access times from small to large
(can certainly be sequence from big to small, i.e., be arranged successively according to the size of PCI access times) be arranged, and is judged whether
There are not used PCI, are 0) that then therefrom selecting a multiplexing number is 0 if there is not used PCI(, that is, multiplexing number
The PCI of (being not used) is used to new cell (cell for being equivalent to PCI to be allocated), if there is no not used PCI, is then turned
A PCI is selected to be multiplexed to step S814.
Step S814: for above-mentioned multiple PCI, network management successively calculates answering for new cell and all cells using the PCI
With coefficient matrix, reusability coefficient is higher between cell, then the reliability for being multiplexed PCI is higher.The method of calculating is: RAB=
DAB+K*AAB, wherein the value of K by configuring from the background, DABIndicate cell A to cell B linear distance, need according to longitude and latitude into
Row calculates, AABIndicate the relative angle weight of area A and cell B, relative angle weight carries out value according to the table 1 in annex, excellent
Selection of land, for allocation algorithm, user can according to need selection and carry out answering for PCI based on distance or based on distance and angle
With K value indicates the influence coefficient of angle, indicates that the deflection vector of cell A, " B arrow " indicate the deflection of cell B with " A arrow "
Vector, " AB arrow " indicate that from cell A to cell B line vector, " BA arrow " is indicated from cell B to cell A line vector, A arrow and B
Arrow is defined as A arrow in the same direction and swears with B in the ipsilateral of AB line；A swears that being defined as A arrow backwards with B arrow swears with B in the two sides of AB line,
Two cell deflection relational graphs are as shown in Figure 7.Highest one of a multiplexing coefficient is selected after calculating relative angle weight
PCI。
Step S816: step S814 is repeated, the multiplexing coefficient of new cell Yu all cells is calculated, then therefrom selects one
The highest PCI of coefficient is multiplexed to use to new cell.
Step S818: network management updates respective cell PCI and shows PCI allocation result on SON monitoring center (if it is fortune
Newly-increased cell during row then needs for allocation result to be synchronized to base station and comes into force or be issued to network element, after network element is arranged successfully
Result is reported into network management, network management shows result on SON monitoring center).
Step S820: judging whether that there is also the cells of PCI to be allocated, if repeated there are also the cell of PCI to be allocated
Step S806 to S818, if it does not exist, then process terminates.
It in the present embodiment, is that conflict according to an embodiment of the present invention is obscured and disappears with reference to Fig. 3, Fig. 5, Fig. 6 and Fig. 7, Fig. 9
The process flow diagram of breath, as shown in figure 9, the process flow includes step S902 to step S920.
Step S902: PCI self-optimization function is enabled on network management.
Step S904: base station by X2 establish and X2 update carry out PCI conflict, obscure detection (X2 establish with X2 more
The maintenance for also needing to carry out available PCI list state when new, if the adjacent area of other cells of our station or certain cell has used this
The PCI, then be set to and used by some PCI in cell PCI list), judgement is centralised allocation or distribution when detection
Distribution, will test result if it is centralised allocation and reports network management, and reporting information includes that conflict, the cell obscured are (small to information
Area's overall identification (Eutran Cell Goal Identify, referred to as ECGI)), the PCI value for conflicting, obscuring, type of message
(conflict or obscure), if it is distributed allocation, base station oneself selects an available PCI (to be not used by from available PCI list
) and report network management (type of message is distributed allocation).
Step S906: network management receiving unit receives the message that base station reports, and judges type of message, obscures if it is conflict,
Then from cell centering select occur conflict obscure number at most and cell in the least cell of call setup number as again
The cell for distributing PCI, goes to step S908, if it is distributed allocation, then the PCI that directly reports base station as new PCI,
Then go to step S920.
Step S908: will need to redistribute the reporting district information SON monitoring center of PCI, wait user's decision, if
User, which confirms, to continue, then goes to step S910, if user terminates, process terminates.
Step S910: with step S808 to S816.
Step S918: judging whether that there is also the cells of PCI to be allocated, if repeating to walk there are also the cell of PCI to be allocated
Rapid S910 to S918, if it does not exist, then going to step S920.
Step S920: network management will need the PCI information updated to show in SON monitoring, go to Fig. 5.
It in the present embodiment, is that conflict according to an embodiment of the present invention is obscured and disappears with reference to Fig. 3, Fig. 5, Fig. 6 and Fig. 7, Fig. 9
The process flow diagram of breath, the process flow can also include the following steps.
Step S1 to S3 is the same as step S902 to S906.
Step S4: it will need to redistribute PCI reporting district information SON monitoring center.
Step S5: with step S910 to S918.
Step S6: network management shows the cell information for needing to redistribute PCI and new PCI in SON monitoring.
Step S7: the cell parameter reset is synchronized to base station and comes into force and show implementing result by network management issuance unit
On SON monitoring center or the PCI of distribution is handed down to base station by network management, and base station resets cell PCI, and result will be arranged
Report network management.
Step S8: being arranged PCI if it is base station, then network management updates corresponding PCI and the result for distributing PCI automatically is shown
In SON monitoring.
It in the present embodiment, is that the PCI list detection of the embodiment of the present invention disappears below with reference to Fig. 4, Fig. 5, Fig. 6 and Fig. 7
The process flow of breath, the process flow include the following steps.
Step S1: PCI self-optimization function is enabled on network management.
Step S2: the update for carrying out available PCI list is established by X2 and updated in base station, if available without PCI, to
Network management reports the unavailable message of PCI list.
Step S3: network management receiving unit receives the information that reports of base station, and by the unavailable information reporting of PCI list to SON
Monitoring center, to user's decision, user's confirmation then continues in next step, and user, which terminates then process, to terminate.
Step S4: network management receiving unit transmits the message to allocation unit, and allocation unit acquisition needs to distribute PCI list
The information such as cell information, including cell ID, frequency point, longitude and latitude, deflection and original PCI value.
Step S5: allocation unit obtains cell information (including the cell of all frequency points identical as PCI list cell to be allocated
ID, frequency point, longitude and latitude and deflection).
Step S6: it is index with PCI, is arranged, therefrom selected N number of according to the sequence of PCI access times from small to large
Multiplexing number be 0(be not used) PCI to new cell use (N indicate PCI list in PCI number, can configure), if
There is no not used PCI, perhaps there are not used PCI, still number is less than N then according to below step selection N or N-M
(M represents selected not used PCI number out) PCI is multiplexed.
Step S7: for above-mentioned multiple PCI, network management successively calculates the multiplexing of new cell and all cells using the PCI
Coefficient matrix, reusability coefficient is higher between cell, then the reliability for being multiplexed PCI is higher.The method of calculating is: RAB=DAB+
K*AAB, wherein the value of K by configuring from the background, DABThe linear distance for indicating cell A to cell B, needs to be counted according to longitude and latitude
It calculates, AABIndicate the relative angle weight of area A and cell B, relative angle weight carries out value according to the table 1 in annex, with " A arrow "
Indicate that the deflection vector of cell A, " B arrow " indicate that the deflection vector of cell B, " AB arrow " are indicated from cell A to cell B line
Vector, " BA arrow " indicate that from cell B to cell A line vector, A arrow is defined as A arrow with B arrow in the same direction and swears with B in the same of AB line
Side；A arrow is defined as A arrow with B arrow in the two sides of AB line with B arrow backwards, and two cell deflection relational graphs are as shown in Figure 8.It calculates
The multiplexing highest cell of coefficient is found out after relative angle weight out.
Step S8: repeat step S6, calculate the multiplexing coefficient of new cell Yu all cells, then therefrom selection top n or
The person N-M high PCI of multiplexing coefficient is used to new cell.
Step S9: the PCI list information redistributed is reported SON monitoring center by network management, user's decision is waited, if really
Recognize continuation, then continue in next step, if terminated, process terminates.
Step S10: network management issuance unit: resetting the PCI list of cell and be synchronized to base station and come into force, while will execute
As a result it shows on SON monitoring center or the PCI list of distribution is handed down to base station by network management, base station resets cell PCI
List, and setting result is reported into network management.
Step S11: PCI list, the then result that network management updates corresponding PCI list and will distribute automatically are set if it is base station
It shows in SON monitoring.
Step S12: if the cell of distribution PCI list also in need, repeats step S3 to step S10.
It in the present embodiment, is another kind PCI according to an embodiment of the present invention below with reference to Fig. 4, Fig. 5, Fig. 6 and Fig. 7
List detects the process flow of message, which can also include the following steps.
Step S1 to S7 is the same as above embodiment step S1 to S3.
Step S8: the PCI list information redistributed is reported SON monitoring center by network management.
Step S9: network management issuance unit: resetting the PCI list of cell and be synchronized to base station and come into force, while will execute
As a result it shows on SON monitoring center or the PCI list of distribution is handed down to base station by network management, base station resets cell PCI
List, and setting result is reported into network management.
Step S10: PCI list, the then result that network management updates corresponding PCI list and will distribute automatically are set if it is base station
It shows in SON monitoring.
Step S11: if the cell of distribution PCI list also in need, repeats step S3 to step S5.
It in the present embodiment, is PCI invalid value according to an embodiment of the present invention with reference to Fig. 3, Fig. 5, Fig. 6 and Fig. 7, Figure 10
Or the process flow diagram of unallocated PCI, as shown in Figure 10, which includes step S1002 to step S1006.
Step S1002: it is detected when restarting or cell PCI changes or by way of being periodically detected base station
PCI value whether distribute or whether be it is invalid, when detection need to judge PCI allocation model for centralization or distribution, if
It is that centralization then will test result and report network management, reporting parameter includes cell Cell Global Identification (the Eutran Cell of invalid value
Goal Identify, referred to as ECGI), i.e. mobile station national code (Mobile Country Code, referred to as MCC), mobile
Network code (Mobile Network Code, referred to as MNC), Base Station Identification (Identifier, referred to as ID), cell ID,
If it is distributed allocation, then network management (including the PCI of selection in message) is reported from one PCI of selection in available PCI list.
Step S1004: network management receiving unit receives the message that base station reports, and judges type of message, judges whether it is collection
Chinese style distribution, if it is centralised allocation, then executes step S904 to the S908 in embodiment, if it is distributed allocation,
Then step S1006 directly is continued to execute using the PCI reported as new PCI.
Step S1006: network management shows the cell information for needing to redistribute PCI and new PCI in SON monitoring,
Go to Fig. 5.
It in the present embodiment, is PCI invalid value according to an embodiment of the present invention with reference to Fig. 3, Fig. 5, Fig. 6 and Fig. 7, Figure 10
Or the process flow diagram of unallocated PCI, the process flow can also include the following steps.
Step S1 to S12 is the same as step S1002 to S1004.
Subsequent step is the same as S910 to S912.
1 relative angle weight table of table
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
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 (15)
1. a kind of auto-allocation method of physical-layer cell identifier PCI characterized by comprising
For each PCI in multiple PCI, the cell of PCI to be allocated and all cells for having used the PCI are calculated separately
It is multiplexed coefficient, wherein the multiplexing coefficient is used to indicate the cell of the PCI to be allocated and the cell for having used the PCI
Relative positional relationship；
Determine the maximum multiplexing coefficient of each PCI；
Preset number is selected from the multiple PCI according to the sequence from big to small for all maximum multiplexing coefficients determined
PCI gives the cell of the PCI to be allocated；
The multiplexing coefficient for having used all cells of the PCI is calculated according to following information: described to have used owning for the PCI
The distance between cell and the cell of the PCI to be allocated and all cells for having used the PCI with it is described to be allocated
Relative angle weight between the cell of PCI；
Wherein, the multiplexing coefficient for having used all cells of the PCI is calculated according to the following formula:
R=D+K*A, wherein the R is the multiplexing coefficient for having used all cells of the PCI, and the D is described made
With all cells of the PCI and the distance between the cell of the PCI to be allocated, the A is the institute for having used the PCI
There is the relative angle weight between cell and the cell of the PCI to be allocated, the K is preconfigured value.
2. the method according to claim 1, wherein being counted respectively for each PCI in the multiple PCI
Before the cell for calculating the PCI to be allocated and the multiplexing coefficient of all cells for having used the PCI, further includes:
Select one or more PCI to the cell of the PCI to be allocated from not used PCI.
3. the method according to claim 1, wherein for calculating answering for all cells for having used the PCI
With the information of coefficient further include:
The distance between the cell of all cells for having used the PCI and the PCI to be allocated.
4. the method according to claim 1, wherein the multiple PCI is in addition to having generated conflict or having obscured
PCI except PCI.
5. the method according to claim 1, wherein all cells are the cell with the PCI to be allocated
The cell of identical frequency point.
6. according to the method described in claim 2, it is characterized in that, according to all maximum multiplexing coefficients for determining from big
To small sequence after selecting cell of the preset number PCI to the PCI to be allocated in the multiple PCI, further includes:
In the case where the preset number is greater than 1, selected by the preset number PCI and/or from the not used PCI
The PCI selected is sent to base station belonging to the cell of the PCI to be allocated；
The base station is the cell of the PCI to be allocated from the preset number PCI and/or the not used PCI selected
Select a PCI.
7. according to the method described in claim 6, it is characterized in that, the method also includes:
The base station is established by X2 and X2 update detects the use state of PCI；
In the case where the base station detects the cell of the PCI to be allocated, the base station according to the testing result from
The cell for being the PCI to be allocated in the preset number PCI and/or selected not used PCI selection one can
PCI, and the result of selection is reported to network management.
8. method according to any one of claim 1 to 7, which is characterized in that
For each PCI in the multiple PCI, network management calculates separately the cell of the PCI to be allocated and has used the PCI
All cells multiplexing coefficient, wherein the multiplexing coefficient is used to indicate the cell of the PCI to be allocated and use this
The relative positional relationship of the cell of PCI；
The network management determines the maximum multiplexing coefficient of each PCI；
The network management selects in advance according to the sequence from big to small for all maximum multiplexing coefficients determined from the multiple PCI
If number PCI gives the cell of the PCI to be allocated.
9. according to the method described in claim 8, it is characterized in that, in the network management according to all maximum multiplexing systems determined
Several sequences from big to small from the multiple PCI select preset number PCI give the PCI to be allocated cell after,
Further include:
In the case where the preset number is 1, the PCI distributed for the cell of the PCI to be allocated is sent to by the network management
The network element of the cell of the PCI to be allocated.
10. according to the method described in claim 8, it is characterized in that, the method also includes:
Base station is established by X2 and X2 update detects the use state of PCI；
In the case where the preset number is 1, and the case where the base station detects the cell of the PCI to be allocated
Under, the testing result is reported to the network management by the base station, and the network management is described to be allocated according to the testing result
The cell of PCI distributes PCI.
11. according to the method described in claim 10, it is characterized in that, the network management according to the testing result be it is described to point
Cell with PCI distributes PCI
The network management determines that the testing result is in the case where clashing or obscuring, and the network management is from clashing or obscure
Cell centering select a cell as the cell of the PCI to be allocated, wherein the cell of the PCI to be allocated is described
It is clashed in the cell pair of PCI to be allocated or to obscure number most, and the least cell of call setup number；
The cell that the network management is the PCI to be allocated distributes PCI.
12. according to the method described in claim 8, it is characterized in that, the method also includes:
Base station is established by X2 and X2 update detects the use state of PCI；
In the case where the preset number is greater than 1, and detect that the cell of the PCI to be allocated not can be used in the base station
PCI in the case where, the testing result is reported to the network management by the base station, and the network management is according to the testing result
The cell of the PCI to be allocated redistributes PCI.
13. method according to claim 11 or 12, which is characterized in that the network management is the cell of the PCI to be allocated
It distributes after PCI, further includes:
The network management shows the PCI information distributed for the cell of the PCI to be allocated in self-organizing network monitoring；
After the network management receives the instruction that confirmation continues, the PCI of the cell distribution for the PCI to be allocated is issued.
14. method according to claim 11 or 12, which is characterized in that the network management is the cell of the PCI to be allocated
It distributes after PCI, further includes:
The network management shows the PCI information distributed for the cell of the PCI to be allocated in self-organizing network monitoring；
The network management issues the PCI information of the cell distribution for the PCI to be allocated.
15. a kind of automatic allocation device of physical-layer cell identifier PCI characterized by comprising
Computing module, for calculating separately the cell of PCI to be allocated and having used the PCI to each PCI in multiple PCI
All cells multiplexing coefficient, wherein the multiplexing coefficient is used to indicate the cell of the PCI to be allocated and use this
The relative positional relationship of the cell of PCI；
Determining module, for determining the maximum multiplexing coefficient of each PCI；
Distribution module, for the sequence from big to small according to all maximum multiplexing coefficients determined from the multiple PCI
Select preset number PCI to the cell to be allocated；
The multiplexing coefficient for having used all cells of the PCI is calculated according to following information: described to have used owning for the PCI
The distance between cell and the cell of the PCI to be allocated and all cells for having used the PCI with it is described to be allocated
Relative angle weight between the cell of PCI；
Wherein, the multiplexing coefficient for having used all cells of the PCI is calculated according to the following formula:
R=D+K*A, wherein the R is the multiplexing coefficient for having used all cells of the PCI, and the D is described made
With all cells of the PCI and the distance between the cell of the PCI to be allocated, the A is the institute for having used the PCI
There is the relative angle weight between cell and the cell of the PCI to be allocated, the K is preconfigured value.
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| CN103716801B (en) * | 2013-12-05 | 2017-01-25 | 广东省电信规划设计院有限公司 | Physical cell identification (PCI) allocation method and system |
| CN105208580B (en) * | 2014-06-28 | 2019-05-24 | 北京神州泰岳软件股份有限公司 | Physical-layer cell identifier PCI optimization method and system in LTE network |
| CN104735717B (en) * | 2015-04-15 | 2018-07-27 | 广东海格怡创科技有限公司 | Cell PCI configuration methods and system |
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