WO2013082926A1

WO2013082926A1 - A method and apparatus for automatically detecting and allocating physical cell identity

Info

Publication number: WO2013082926A1
Application number: PCT/CN2012/076607
Authority: WO
Inventors: 韩小琴
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-12-06
Filing date: 2012-06-07
Publication date: 2013-06-13
Also published as: CN103152743B; CN103152743A

Abstract

The present invention provides a method for automatically detecting and allocating physical cell identity (PCI), comprising: obtaining the planning data of the cell of the base station and setting the required parameters for automatically allocating PCI by the cell; dividing the network area of the base station into clusters according to the planning data and the required parameters for automatically allocating PCI by the cell, and obtaining the edge clusters and center area clusters; computing and obtaining the PCI range usable for the center area clusters and the PCI range pre-set for the edge clusters; automatically allocating PCI for the cell of the base station according to the PCI range usable for the center area clusters and the PCI range pre-set for the edge clusters. The present invention also provides an apparatus for automatically detecting and allocating PCI. The application of the present invention can reduce the PCI conflict and confusion among cells, and resolve the conflict between the finitude of the PCI amount and the hugeness of cell amount.

Description

Method and device for automatically detecting and allocating physical layer cell identifier

Technical field

The present invention relates to a third generation mobile communication (3G, 3rd-generation) Long Term Evolution (LTE) system in the field of wireless communications, in particular to an automatic detection and allocation of physical layer cell identifiers (PCI, or Phy-CID). , Physical Cell Identity ) method and device. Background technique

The PCI or Layer 1 (LI, Layer 1) identifier is an important configuration parameter of the radio cell in the LTE system, and has 504 cell identifiers. The number of wireless cells is much larger than the range of PCI identification, so PCI multiplexing between cells is inevitable. The third-generation partner project (3GPP, The 3rd Generation Partnership Project) technical specification stipulates that the PCI cannot be conflicted or confused, otherwise the user equipment (UE, User Equipment) cannot identify the cell; wherein the conflict is the two adjacent cells. PCI cannot be the same. Confusion means that the PCI of two adjacent cells of a cell cannot be the same. Therefore, the reuse of PCI needs to follow the principle of no conflict and no confusion. If the PCI is out of range or there is no cell PCI, the base station cannot provide services. How to allocate PCI and save PCI resources while ensuring collision-free confusion is a problem that needs to be solved in LTE systems.

At present, the method of allocating PCI is to manually plan the PCI for the base station by using the manual planning method, and the planned PCI needs to ensure that the conflict cannot be confused. Network optimizers are required to re-optimize PCI in the event of conflict confusion. However, there are many cells in the network, and manual planning will increase the probability of error, reduce the reliability of the network, increase the manpower input of network planning and optimization, and increase the operation and maintenance cost of operators.

It can be seen that the method for allocating PCI in the prior art cannot reduce the PCI conflict and confusion between cells, and cannot solve the contradiction between the limitation of the number of PCIs and the huge number of cells. Summary of the invention

The technical problem to be solved by the present invention is to provide a method and device for automatically detecting and allocating PCI, which can reduce PCI conflict and confusion between cells, and solve the problem of the limitation of the number of PCIs and the huge number of cells.

To solve the above technical problem, an embodiment of the present invention provides a method for automatically detecting and allocating PCI, including:

Obtaining planning data of a cell of the base station and setting parameters required for the cell to automatically allocate PCI;

And performing clustering on the network area of the base station according to the planning data and parameters required for the cell to automatically allocate PCI, to obtain a boundary cluster and a central area cluster;

Calculating a PCI range available for obtaining the cluster of the central region, and a PCI range pre-set for the boundary cluster;

The PCI of the base station is automatically allocated according to the PCI range available to the central area cluster and the PCI range preset by the boundary cluster.

The clustering of the network area of the base station is performed according to the planning data and parameters required for the cell to automatically allocate PCI, and the boundary cluster and the central area cluster are obtained, including:

Obtaining a network area range of the base station according to the planning data;

And dividing the network area into a boundary cluster in the space and a central area except the boundary cluster according to parameters required for the cell to automatically allocate PCI;

The central area is divided into a plurality of central area clusters.

The dividing the central area into a plurality of central area clusters includes:

Calculating a cell cluster area including a plurality of cells;

The central area is divided into a plurality of central area clusters according to the cell cluster area.

The calculating, by using the calculation, the area of the cell cluster including multiple cells, including: Calculating an average area of the cells obtained in the central area;

a first product obtained by multiplying the average area of the cell by a minimum number of cells in the cluster; a second product obtained by multiplying a cluster minimum width and a cluster minimum height in a parameter required for the cell to automatically allocate PCI;

Taking the larger of the first product and the second product as the cell cluster area. After the dividing the central area into a plurality of central area clusters, the method further includes:

Performing coordinate setting on the plurality of central area clusters;

Sorting the coordinates of the plurality of central region clusters according to a preset order, and arranging the numbered groups of the plurality of central region clusters that are sorted, and the multiplexed clusters use the same PCI range.

The numbering of the plurality of central area clusters in a preset order, and the numbering of the plurality of central area clusters that are sorted are multiplexed, including:

Sorting the coordinates of the plurality of central region clusters in increasing order;

The coordinates of the cluster of the leftmost central region in the central region are x=l, and the coordinates of the cluster at the top of the central region are y=l;

The number of the plurality of central area clusters multiplexed = ((X-1) mod 2) + (( y-1 ) mod 2 ) x2.

The calculating, by the calculation, the available PCI range of the central area cluster, including: obtaining a preset PCI range of the base station;

According to the PCI range of the base station and the number of cluster multiplexing, the PCI range available for the central area cluster is calculated.

The automatically allocating PCI to the cell of the base station according to the PCI range available to the cluster of the central area and the PCI range set by the boundary cluster, including:

Obtaining physical location information of all cells in the network area of the base station, and PCI, and physical location information of a cell that needs to reallocate the PCI; Querying, according to physical location information of the cell, a boundary or a central area cluster of the cell, obtaining a PCI range of the boundary cluster or an available PCI range of the central area cluster;

Counting the number of PCI usages of the cells in the cluster in which the cell is located;

According to the number of uses of the PCI, PCI is automatically allocated for a cell that needs to re-allocate PCI. The automatically allocating PCI for the cell that needs to re-allocate the PCI according to the number of uses of the PCI, including:

If there is a PCI with 0 times, select PCI with 0 times, and automatically allocate PCI for the cell that needs to re-allocate PCI;

Otherwise, the distance between the new cell and the cell using the PCI is greater than the anti-collision threshold, and the PCI with the distance between the new cell and all other cells being less than or equal to twice the anti-aliasing threshold is used by the new cell;

The new cell is a cell that needs to re-allocate PCI.

The cell that needs to be reassigned to the PCI is: determined by: when the neighbor relationship of the base station changes or the cell parameters change, triggering the detection of the PCI conflict confusion, and obtaining the conflicting cell information and conflict confusion PCI value and message type; selecting a cell with the most conflicting confusion times and the least number of call establishments in the cell, as the cell for reallocating PCI;

Or

When the base station restarts, or the X2 interface performs information exchange or a switch operation occurs, triggering PCI collision confusion detection or periodic detection mode to detect PCI conflict confusion, obtaining conflict-confined cell pair information, conflict-conflicted PCI value, and message Type; select the cell with the most conflicting confusion and the least number of call establishments in the cell as the cell that re-allocates the PCI.

The automatically allocating the PCI for the cell that needs to be reassigned to the PCI includes: the base station to report the determined re-allocated PCI to the network management system, and the network management system performs the selection of the cell for reallocating the PCI; or,

The base station itself selects a cell that needs to re-allocate the PCI and reports the network management system, and the network management system re-allocates the PCI for the cell that re-allocates the PCI.

After the PCI is automatically allocated to the cell that needs to be reassigned, the method further includes:

The PCI distribution result is displayed on the monitoring center of the network management system, and the selected configuration mode is obtained, and the terminal in the current cell is moved out, and after receiving the confirmation, the PCI of the cell is reset according to the selected configuration manner. And synchronizing the PCI of the re-set cell to the network element; or transmitting the PCI allocation result to the base station, where the base station resets the PCI of the cell, and reports the setting result to the network management system, and updates Corresponding PCI and the results of automatically allocating PCI are displayed on the monitoring center;

Or

Displaying the result of the PCI distribution on the monitoring center of the network management system, and automatically resetting the PCI of the cell, and then synchronizing the reset cell PCI to the network element; or sending the PCI allocation result to the base station The PCI of the cell is reset by the base station, and the setting result is reported to the network management system, the corresponding PCI is updated, and the result of automatically allocating the PCI is displayed on the monitoring center of the network management system.

The present invention also provides an apparatus for automatically detecting and allocating a physical layer cell identifier, the apparatus comprising: a first obtaining module, a dividing module, a second obtaining module, and a PCI allocating module; wherein, the first obtaining module is configured to obtain self management The planning data of the cell of the base station and the parameters required for automatically assigning the PCI to the cell, and sending the planning data and parameters required for the cell to automatically allocate PCI to the dividing module;

a dividing module, configured to perform clustering on a network area of the base station according to the planning data sent by the first obtaining module and parameters required for the cell to automatically allocate PCI, and obtain a boundary cluster and a central area cluster Send to the second acquisition module; a second obtaining module, configured to receive a boundary cluster and a central region cluster sent by the dividing module, calculate a PCI range that is available for the central region cluster, and a PCI range preset for the boundary cluster, where the central region is The PCI range available for the cluster, and the PCI range preset for the border cluster are sent to the PCI allocation module;

a PCI allocation module, configured to automatically allocate a PCL to a cell of the base station according to a PCI range available to the central area cluster sent by the second obtaining module and a PCI range preset by the boundary cluster

The dividing module includes: a first obtaining submodule, a first dividing submodule, and a second dividing submodule; wherein

a first obtaining submodule, configured to obtain a network area range of the base station according to the planning data, and send a network area range of the base station to the first dividing submodule;

a first sub-module, configured to divide the network area sent by the first obtained sub-module into a boundary cluster in a space and a central area except the boundary cluster according to parameters required for the cell to automatically allocate PCI And transmitting the central area to the second partitioning submodule;

And a second dividing submodule, configured to divide the central area sent by the first dividing submodule into a plurality of central area clusters.

The beneficial effects of the above technical solution of the present invention are as follows:

In the foregoing solution, the network area of the base station is divided into a boundary cluster and a central area cluster, where the boundary cluster is four border clusters of the east, the south, the west, and the north of the network area, and the PCI range is set for the boundary cluster, and the center The regional cluster automatically allocates PCI, which reduces the PCI conflict and confusion between cells, and solves the problem of the limitation of the number of PCIs and the huge number of cells. Furthermore, the reliability of the network is enhanced, and the network planning and optimization of human resources are reduced. Small, and reduce operating and maintenance costs. DRAWINGS

1 is a schematic flow chart of a method for automatically detecting and distributing PCI according to the present invention; 2 is a schematic diagram of a cluster division process in the method of the present invention;

3 is a schematic diagram of an automatic process of PCI allocation in the method of the present invention;

4 is a schematic diagram of a processing flow of a PCI conflict obfuscation message in the method of the present invention; FIG. 5 is a schematic diagram of an interaction process between the method and the SON monitoring center of the network management system in the method of the present invention;

6 is a schematic diagram of a process flow of PCI invalid value or unallocated PCI in the method of the present invention; FIG. 7 is a schematic structural diagram of an apparatus for automatically detecting and allocating PCI according to the present invention. detailed description

The technical problems, the technical solutions, and the advantages of the present invention will become more apparent from the following detailed description.

As shown in FIG. 1 , a method for automatically detecting and allocating PCI according to an embodiment of the present invention includes: Step 11: Obtain planning data of a cell of a base station, and set parameters required for the cell to automatically allocate PCI;

Step 12: Perform clustering on the network area of the base station according to the planning data and parameters required for the cell to automatically allocate PCI, to obtain a boundary cluster and a central area cluster;

Step 13: Calculate a PCI range available for obtaining the cluster of the central region, and a PCI range preset for the boundary cluster;

Step 14: automatically allocate PCI to the cell of the base station according to the PCI range available to the central area cluster and the PCI range preset by the boundary cluster.

In this embodiment, the parameters required for the cell to automatically allocate PCI include: network boundary parameters and cluster size related parameters;

The network area range of the base station is determined by the base station center location of the base station plus the boundary cell radius; by dividing the network area of the base station into a boundary cluster and a central area cluster, where the boundary cluster is east of the network area , four clusters of south, west, and north, and set the PCI range for the boundary cluster, and the central cluster automatically allocates PCI, which causes PCI conflict and confusion between cells. Reduce, solve the contradiction between the limited number of PCI and the huge number of cells.

In the foregoing method embodiment shown in FIG. 1, preferably, the foregoing step 12 includes:

Step 121: Obtain a network area range of the base station according to the planning data.

Step 122: Divide the network area into a boundary cluster in a space and a central area except the boundary cluster according to parameters required for the cell to automatically allocate PCI;

Step 123: Divide the central area into a plurality of central area clusters.

Further, the step 123 includes: calculating a cell cluster area including a plurality of cells; and dividing the central area into a plurality of central area clusters according to the cell cluster area;

The calculating, by obtaining the cell cluster area including the multiple cells, includes: calculating an average area of the cells of the central area; and multiplying the average area of the cells by a first number of cells in the cluster; a second product obtained by multiplying a cluster minimum width and a cluster minimum height in parameters required for automatically allocating PCI; taking the larger of the first product and the second product as the cell cluster area; The minimum number of cells in the cluster is taken as the maximum value of the average area of the central area of the cluster and the minimum height of the cluster minimum width X cluster. Then, the cluster is square, and the width and height of the cluster are calculated. At this time, the central area is divided into several square clusters. The average area of the cell of the central area cell = the area of the central area / the number of cells of the central area; the number of cells of the central area is determined according to the boundary coordinate value of the central area and the boundary coordinate range of the central area The number of cells in the central area determined by the latitude and longitude coordinates of the cell center.

Further, in the above method, after the step 123, the method further includes: performing coordinate setting on the plurality of central area clusters; sorting coordinates of the plurality of central area clusters according to a preset order; The numbering of multiple central area clusters for multiplexing, and the multiplexed clusters use the same PCI range;

The sorting the coordinates of the plurality of central area clusters according to a preset order includes: sorting coordinates of the plurality of central area clusters in an increasing order;

The number setting for multiplexing the sorted plurality of central area clusters includes: The coordinates of the cluster of the leftmost central region in the central region are χ=1, and the coordinates of the upper cluster of the central region are y=l; the number of the clusters of the plurality of central regions is multiplexed = ((X-1) Mod 2 ) + ( ( y-1 ) mod 2 ) x2.

In an embodiment of all the foregoing methods, in step 13, the calculating, obtaining the PCI range that is available to the central area cluster includes: obtaining a preset PCI range of the base station; according to a PCI range of the base station, and a clustering Using the number of times, the PCI range available for the cluster of the central region is calculated. For example, the network management can obtain the PCI range of different base stations, and then calculate the available PCI range for each cluster; wherein, the calculated available PCI range is: PCI range/cluster multiplexing times, and the number of PCIs in the cluster needs to be greater than the minimum number of PCIs in the cluster. Otherwise, the clustering needs to be re-divided or the minimum number of PCIs in the cluster is modified, and then the available PCI is evenly distributed among the multiplexing clusters.

In another embodiment of the present invention, the foregoing step 14 may include:

Obtaining physical location information of all cells in the network area of the base station, and PCI, and physical location information of a cell that needs to reallocate PCI;

Querying, according to physical location information of the cell, a boundary or a central area cluster of the cell, obtaining a PCI range of the boundary cluster or an available PCI range of the central area cluster;

According to the number of uses of the PCI, PCI is automatically allocated for a cell that needs to re-allocate PCI. Further, the automatically allocating PCIs for the cells that need to re-allocate the PCI according to the number of uses of the PCI includes: if there is a PCI with 0 times of use, selecting a PCI with a number of times of 0, which is a cell that needs to be re-allocated PCI The PCI is automatically allocated; otherwise, the distance between the new cell and the cell using the PCI is greater than the anti-collision threshold, and the PCI with the distance between the new cell and all other cells being less than or equal to twice the anti-aliasing threshold is used by the new cell. The new cell is a cell that needs to reallocate PCI.

Further, the cell that needs to re-allocate the PCI is determined by: when the neighbor relationship of the base station changes or the cell parameters change, triggering the PCI conflict confusion detection Measure, obtain conflicting cell-to-information, conflict-conflicted PCI value, and message type; select a cell with the most conflicting confusion times and the least number of call establishments in the cell as the cell that re-allocates PCI;

Or,

When the base station performs the information exchange and the switch on the X2 interface, it triggers the detection of the PCI conflict confusion or the period of the periodic detection to detect the PCI conflict confusion, and obtains the cell-pair information of the conflict confusion, the PCI value of the conflict confusion, and the message type; The cell with the most confusion and the least number of call establishments in the cell is used as the cell for reallocating the PCI.

The base station performs the cell re-allocation of the PCI to the network management system, and the network management system selects a cell that needs to re-allocate the PCI, and the base station selects the cell that needs to re-allocate the PCI and reports the In the network management system, the network management system re-allocates the PCI for the cell that re-allocates the PCI.

The detailed implementation process of the foregoing method embodiments will be described below with reference to specific drawings: First Specific Implementation Embodiment:

For example, as shown in FIG. 2, the method for dividing a cell cluster of the foregoing base station and the PCI automatic allocation process of the cell on the network management system includes:

Step S101: Import all the planning data of the base station through the network management system, plan the PCI of the unplanned cell of the base station, or newly add a base station and a cell through the network management system in the already operated network.

Step S102: Import or set related cluster allocation parameters (that is, parameters required for automatically allocating PCI in the above-mentioned cell) through the network management system.

Here, the related cluster allocation parameters include: a network boundary parameter and a cluster size related parameter, where the network boundary parameter includes: a boundary cell radius, a boundary width, and a boundary height, and the cluster size related parameters include: a cluster reuse factor, a cell cluster The minimum width, the minimum height of the cell cluster, the maximum width of the cell cluster, the maximum height of the cell cluster, the maximum number of cells in the cluster, the minimum number of cells in the cluster, the minimum number of available PCIs in the cluster, and the shortest distance requirement to satisfy the minimum number of cells in the cluster. Step S103: The network management system obtains the network area of the base station managed by itself according to the planning data. Here, the range of the network area is composed of the most boundary cell center position plus the boundary cell radius.

Step S104: Perform cluster division by the network management system.

Specifically, according to the geographical location information of the cell, such as the boundary width and the boundary height, the network range is divided into four boundary clusters of east, south, west, and north, and the remaining is a central area, and the boundary cluster uses a pre-set boundary PCI range.

Step S105: Divide the central area into clusters.

Specifically, calculating the average area of the central area cell, that is, the area of the central area/the number of cells in the central area, and then calculating the area of the cell cluster by taking the minimum number of cells in the cluster, the average area of the central area of the central area, and the minimum height of the cluster minimum width X cluster minimum height. Value, then assume that the cluster is square, calculate the width and height of the cluster, and divide the central area into several square clusters;

Step S106: Count the number of cells in the cluster.

Specifically, the number of cells needs to be greater than the minimum number of cells in the cluster, and is smaller than the maximum number of cells in the cluster. When the minimum number is counted, the cell with the small interval less than the shortest distance is not counted, that is, the cell with a small distance is ignored. Prevent the cell from being too large to increase the probability of PCI collision. If it is not satisfied, you need to reset the cluster size or the minimum number of cells and the shortest distance requirement, and re-divide.

Step S107: Perform coordinate setting of the cluster of the central area, and then perform number setting of the multiplexing cluster. Here, the coordinates of the leftmost cluster of the central region are x=l, the coordinates of the uppermost cluster of the central region are y=l, and then the coordinates are incremented from left to right and from top to bottom; The specific method of number setting is cluster multiplexing number = ((xl) mod 2) + ((yl) mod 2) x2, and the multiplexed clusters use the same PCI range.

Step S108: The network management system obtains the PCI range of different base stations, and then calculates an available PCI range for each cluster.

Here, the method for calculating the available PCI range is: PCI range divided by number of cluster multiplexing, cluster The number of internal PCIs needs to be larger than the minimum number of PCIs in the cluster. Otherwise, the clusters need to be re-divided or the minimum number of PCIs in the clusters should be modified, and then the available PCIs are evenly distributed among the multiplexing clusters. For the calculation method of the central region cluster of a base station, the same.

Step S109: Enable the PCI automatic allocation function on the network management system.

Step S110: Perform automatic PCI allocation on the network management system.

As shown in FIG. 3, the process of automatically allocating PCI on the network management system in step S110 may include:

Step S1101: The network management system acquires all the physical location of the cell and the PCI information in the network area of the base station, and the geographical location information of the cell that needs to re-allocate the PCI;

Step S1102: Query the geographic location of the cell in which the PCI is allocated, query the boundary of the cell or the central area cluster, obtain the PCI range of the boundary cluster or the available PCI range of the central area cluster, and count the intra-cluster cell where the cell is located. The number of PCI uses, arranged in descending order;

Step S1103: First, select unused PCI (that is, PCI with 0 times of use). If there is no unused PCI, select the distance between the new cell and the cell using the PCI is greater than the anti-collision threshold, and the new cell and all other cells The PCI whose distance is less than or equal to twice the anti-aliasing threshold is used by the new cell, and the number of PCI usage is updated every time one PCI is allocated;

Step S1104: The network management system updates the corresponding cell PCI, and displays the PCI allocation result on the monitoring center of the network management system.

The second specific implementation of the foregoing method of the present invention is: implementing the cell cluster division of the foregoing base station and the PCI automatic optimization process of the cell on the network management system, including: processing process of the PCI conflict confusion message and interaction between the base station and the network management system Process

The processing flow of the PCI conflict obfuscation message is as shown in FIG. 4, and includes:

Step S201: Enable the PCI self-optimization function on the network management system.

Step S202: When the neighbor relationship of the base station changes or the cell parameters change, the base station The detection of the PCI conflict confusion is triggered, and the detection result is reported to the network management system.

Here, the detection result includes: cell confusion information (cell ECGI) of conflict confusion, PCI value of conflict confusion, message type (conflict or confusion).

Step S203: The network management system receives the detection result reported by the base station, and selects the cell with the most occurrences and the least number of call establishments in the cell as the cell that re-allocates the PCI.

Step S204: The network management system reports the cell information that needs to be re-allocated to the monitoring center of the self-organizing network (SON, Self Organization Network) to determine whether it is currently in the controlled mode. If not, step S205 is performed; if yes, it is determined whether to receive The confirmation message sent to the user, if received, proceeds to step S205, and if not received, ends the processing flow.

Step S205: The network management system allocates PCI to the cell.

Specifically, the following steps are included:

Step S2051: Obtain all physical location of the cell of the base station, PCI information, and physical location information of the cell that needs to be re-allocated PCI.

Step S2052: Query the cluster where the cell is located according to the physical location of the cell, thereby obtaining the PCI range in the cluster, and counting the number of PCI usages in the cluster, and arranging them in descending order.

Step S2053: First, the unused PCI is selected. If there is no unused PCI, the distance between the new cell and the cell using the PCI is greater than the anti-collision threshold, and the distance between the new cell and all other cells is lower than the anti-aliasing threshold. '], equal to twice the PCI for the new d, zone use, each time a PCI is allocated, update the number of PCI uses.

After the step S205 is completed, the interaction process with the SON monitoring center of the network management system is as shown in FIG. 5, including:

Step S206: The network management system displays the PCI allocation result on the SON monitoring center of the network management system to determine whether it is currently in the controlled mode. If not, step S210 is performed; if yes, step S207 is performed;

Step S207: Receive a configuration mode set by the user, and determine whether the configuration mode set by the user is In order to configure immediately, if yes, step S208 is performed; if not, step S209 is performed.

Step S208: The user is prompted to re-allocate the network impact of the PCI and the UE in the current cell is migrated, and the user is confirmed to receive the confirmation information. If yes, go to step S210; otherwise, the process ends.

Step S209: determining whether the configuration mode set by the user is a predetermined time configuration, and if yes, determining whether the predetermined time has arrived, if the time arrives, executing step S210; otherwise, continuing to determine whether the predetermined time has arrived; otherwise, determining the user setting The configuration is manual, and step S211 is performed.

Step S210: The network management system sets the cell PCI to the automatically allocated PCI, and sends the automatically allocated PCI to the base station and takes effect. Alternatively, the network management system sends the allocation result to the base station, and the base station resets the PCI according to the allocation result and sets The result is reported to the network management system, and step S212 is performed.

Step S211: The network management system sets the cell PCI to the manually set PCI, and sends the manually set PCI to the base station and takes effect. Alternatively, the network management system sends the allocation result to the base station, and the base station resets the cell PCI according to the allocation result, and Report the settings to the NMS.

Step S212: The network management system reports the setting result to the SON monitoring center.

Specifically, if the network management system is configured with the PCI, the network management system directly displays the setting result of the automatic allocation of the PCI on the SON monitoring center; if the base station sets the PCI according to the allocation result delivered by the network management system, the network management system sets the setting reported by the base station. The results are displayed on the SON Monitoring Center of the network management system.

A third specific implementation embodiment of the above method of the present invention:

The method for dividing the cell cluster of the foregoing base station and the PCI automatic optimization process of the cell is still implemented on the network management system, and the method includes:

Step S301: Enable the PCI self-optimization function on the network management device in step S201 of the second embodiment.

Step S302: The base station triggers detection when restarting, performing information exchange and switching on the X2 port. The PCI conflict is confusing, and the message is reported to the network management system;

Steps S303 - S310 are the same as steps S203 - S210 in the second specific implementation embodiment described above. A fourth specific implementation embodiment of the above method of the present invention:

Step S401: Step S201 of the second specific implementation embodiment;

Step S402: The base station reports the detection result to the network management system by means of the period detection. Steps S403-S410 are the same as steps S203-S210 in the second specific implementation embodiment. A fifth specific implementation embodiment of the above method of the present invention:

The method further comprises: dividing the cell cluster of the foregoing base station and the PCI auto-optimization process of the cell on the network management system, the method comprising:

Step S501: Step S201 of the second specific implementation embodiment;

Step S502: The base station detects the PCI conflict confusion result and reports the network management, and the detection manner includes the detection methods described in steps S202, S302, and S402 in the foregoing second, third, and fourth embodiments. Step S503: In the second specific implementation embodiment. Step S203;

Step S504: The network management system reports the cell information that needs to be reassigned to the SON monitoring center.

Step S505: The same as Embodiment 1 step S111;

Step S506: The same as Embodiment 1 step S112;

Step S507: Step S113 is the same as Embodiment 1.

Step S508: The network management system displays the PCI allocation result on the SON monitoring center, and immediately reconfigures the PCI;

Step S509: The network management system synchronizes the reset cell parameters to the network element or the network management system sends the allocated PCI to the base station, and the base station resets the cell PCI, and reports the setting result to the network management system. Step S510: If the network management system sets the PCI, the PCI automatic allocation result is directly displayed on the SON monitoring center. If the base station sets the PCI, the network management system updates the corresponding PCI and displays the result of the PCI automatic allocation on the SON monitoring center.

A sixth specific implementation embodiment of the above method of the present invention:

The process of dividing the cell cluster of the foregoing base station and the PCI automatic optimization process of the cell is still implemented on the network management system. As shown in FIG. 6, the method includes:

Step S601: When the base station detects whether the PCI value is allocated or is invalid, the base station system reports the detection result to the network management system when the base station changes or the cell PCI changes.

The Eutran cell global identifier in the cell where the reporting parameter includes an invalid value

(ECGI, Eutran Cell Goal Identify), namely Mobile Country Code (MCC), Mobile Network Code (MNC), Base Station Identity (ID), Cell ID.

Step S602: The network management system receives the detection result reported by the base station, and reports the cell information that needs to be re-allocated to the SON monitoring center, and determines whether it is currently in the controlled mode. If not, step S603 is performed; if yes, it is determined whether it is received. The confirmation message sent by the user, if received, proceeds to step S603, and if not received, ends the processing flow.

Step S603: The network management system allocates PCI to the cell.

The following steps are the same as steps S206 to S212 of the second specific implementation embodiment described above.

A seventh specific implementation embodiment of the above method of the present invention:

Step S701 is the same as step S601 of the sixth specific implementation embodiment;

The following steps are the same as steps S504 to S510 of the fifth specific implementation embodiment described above.

As shown in FIG. 7, in accordance with the above method, an embodiment of the present invention further provides an automatic check. The apparatus 70 for measuring and assigning a physical layer cell identifier includes:

a first obtaining module, configured to obtain planning data of a cell of a base station managed by itself, and set parameters required for the cell to automatically allocate PCI, and send the planning data and parameters required for automatically allocating PCI by the cell to a dividing module ;

a dividing module, configured to perform clustering on a network area of the base station according to the planning data sent by the first obtaining module and parameters required for the cell to automatically allocate PCI, and obtain a boundary cluster and a central area cluster Send to the second acquisition module;

a second obtaining module, configured to receive a boundary cluster and a central region cluster sent by the dividing module, calculate a PCI range that is available for the central region cluster, and a PCI range preset for the boundary cluster, where the central region is The PCI range available for the cluster, and the PCI range preset for the border cluster are sent to the PCI allocation module;

The dividing module includes:

Further, all the features in the foregoing method embodiments are applicable to the embodiment of the device, and the same technical effects can be achieved, and details are not described herein again.

The above is a preferred embodiment of the present invention, it should be noted that Many modifications and refinements can be made by those skilled in the art without departing from the principles of the invention, and such modifications and refinements are also considered to be within the scope of the invention.

Claims

Claim

A method for automatically detecting and allocating a physical layer cell identifier PCI, which is characterized by:

The method according to claim 1, wherein the clustering of the network area of the base station is performed according to the planning data and parameters required for the cell to automatically allocate PCI, to obtain a boundary cluster and The central area cluster, including:

The central area is divided into a plurality of central area clusters.

The method according to claim 2, wherein the dividing the central area into a plurality of central area clusters comprises:

Calculating a cell cluster area including a plurality of cells;

The method according to claim 3, wherein the calculating the area of the cell cluster including the plurality of cells comprises:

Calculating an average area of the cells obtained in the central area; a first product obtained by multiplying the average area of the cell by a minimum number of cells in the cluster; a second product obtained by multiplying a cluster minimum width and a cluster minimum height in a parameter required for the cell to automatically allocate PCI;

Taking the larger of the first product and the second product as the cell cluster area.

The method according to claim 2, wherein after the dividing the central area into a plurality of central area clusters, the method further comprises:

Performing coordinate setting on the plurality of central area clusters;

The method according to claim 5, wherein the sorting the coordinates of the plurality of central region clusters in a preset order, and multiplexing the sorted plurality of central region clusters Settings, including:

The coordinates of the cluster of the leftmost central region in the central region are χ=1, and the coordinates of the cluster at the top of the central region are y=l;

The number of the plurality of central area clusters multiplexed = ( ( X-1 ) mod 2 ) + ( ( y-1 ) mod

2) x2.

The method according to claim 1, wherein the calculating obtains a PCI range available to the central area cluster, including:

Obtaining a preset PCI range of the base station;

The method according to claim 1, wherein the automatically allocating PCI to the cell of the base station according to the PCI range available to the cluster of the central area and the PCI range preset by the boundary cluster includes: Obtaining physical location information of all cells in the network area of the base station, and PCI, and physical location information of a cell that needs to reallocate PCI;

Querying, according to the physical location information of the cell, d, a boundary where the zone is located, or a cluster of the central zone, obtaining a PCI range of the boundary cluster or an available PCI range of the central zone cluster;

According to the number of uses of the PCI, PCI is automatically allocated for a cell that needs to re-allocate PCI.

The method according to claim 8, wherein the automatically allocating PCI for a cell that needs to re-allocate PCI according to the number of times of using the PCI includes:

The new cell is a cell that needs to re-allocate PCI.

10. The method according to claim 9, wherein the cell that needs to reallocate PCI is: determined by:

When the neighbor relationship of the base station changes or the cell parameters change, triggering the detection of the PCI conflict confusion, obtaining the cell-pair information of the conflict confusion, the PCI value of the conflict confusion, and the message type; selecting the most conflicting confusion and establishing the call in the cell The least number of cells, as the cell that redistributes PCI;

Or

The method according to claim 10, wherein the automatically allocating PCI for a cell that needs to reallocate a PCI includes:

The base station reports the determined cell of the reassigned PCI to the network management system, and the network management system reassigns the PCI to the reported cell;

Or,

The method according to claim 11, wherein after the automatically allocating PCI for a cell that needs to be reassigned PCI, the method further includes:

Or

An apparatus for automatically detecting and assigning a physical layer cell identifier, the apparatus comprising: a first obtaining module, a dividing module, a second obtaining module, and a PCI allocating module; wherein, the first obtaining module is configured to obtain Planning data of a cell of a self-managed base station and setting parameters required for the cell to automatically allocate PCI, the planning data and the cell are automatically The parameters required to allocate PCI are sent to the partitioning module;

The device according to claim 13, wherein the dividing module comprises: a first obtaining submodule, a first dividing submodule, and a second dividing submodule;