CN103152743A - Method and device of automatic detection and allocation of physical layer cellular identifiers - Google Patents

Abstract

The present invention provides a method and device for automatically detecting and distributing physical layer cell identifiers, wherein the method includes: obtaining planning data of a cell of a base station and setting parameters required for the cell to automatically assign a physical layer cell identifier PCI; according to the planning The data and the parameters divide the network area of the base station into clusters to obtain border clusters and central area clusters; obtain the available PCI range of the central area cluster and the preset PCI range for the border cluster; according to the The PCI range available to the central region cluster and the preset PCI range of the boundary cluster are used to automatically allocate PCIs to cells of the base station. The solution of the present invention can reduce PCI conflict and confusion between cells.

Description

A method and device for automatically detecting and assigning physical layer cell identifiers

technical field

The present invention relates to the third-generation mobile communication long-term evolution 3GPP LTE system in the field of wireless communication, in particular to a method and device for automatically detecting and assigning physical layer cell identifiers.

Background technique

The physical layer cell identity or L1 identity (PCI, or Phy-CID, Physical Cell Identity) is an important configuration parameter of the wireless cell in the LTE system, and there are 504 cell identities in total. However, the number of wireless cells is far greater than the scope of the PCI identification, so PCI multiplexing between cells is inevitable. However, the 3GPP technical specification stipulates that the PCIs cannot conflict or be confused. Conflict means that the PCIs of two adjacent cells cannot be the same. Confusion means that the PCIs of two adjacent sub-cells in a cell cannot be the same. Otherwise, the UE cannot identify the cell. To use it, you need 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 efficiently complete PCI multiplexing and save PCI resources while ensuring no conflict and confusion is a problem to be solved in the LTE system. The current method is to plan the PCI for the base station by manual planning, and the planned PCI needs to ensure that there is no conflict and confusion. When conflicts and confusion occur, network optimization personnel need to re-optimize PCI. There are many cells in the network. Using manual planning will increase the probability of errors and reduce the reliability of network deployment. At the same time, it will increase the manpower input for network planning and optimization, and increase the operation and maintenance costs of operators.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method and device for automatically detecting and distributing physical layer cell identifiers, which can solve the contradiction between the limited number of PCIs and the huge number of cells.

In order to solve the above technical problems, embodiments of the present invention provide a method for automatically detecting and assigning physical layer cell identities, including:

Obtaining the planning data of the cell of the base station and setting the parameters required for the cell to automatically assign the physical layer cell identity PCI;

dividing the network area of the base station into clusters according to the planning data and the parameters to obtain boundary clusters and central area clusters;

obtaining the PCI range available for the center cluster and the preset PCI range for the border cluster;

Automatically allocate PCIs to the cells of the base station according to the available PCI ranges of the central area cluster and the preset PCI ranges of the border clusters.

Wherein, the step of dividing the network area of the base station into clusters according to the planning data and the parameters to obtain boundary clusters and central area clusters includes:

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

dividing the network area into boundary clusters in the space and a central area except the boundary clusters according to the parameters;

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

Wherein, the step of dividing the central area into a plurality of central area clusters includes:

Obtain the area of a cell cluster comprising a plurality of cells;

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

Wherein, the step of obtaining the cell cluster area comprising multiple cells comprises:

Obtaining the average area of the cells in the central area;

Obtaining the first product obtained by multiplying the average area of the cell by the minimum number of cells in the cluster;

Obtain the second product obtained by multiplying the cluster minimum width by the cluster minimum height;

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

Wherein, the step of dividing the central area into a plurality of central area clusters further includes:

performing coordinate setting on the plurality of central area clusters;

sorting the coordinates of the plurality of central area clusters according to a preset order;

Multiplex numbering is performed on the sorted plurality of central area clusters, and the multiplexed clusters use the same PCI range.

Wherein, the step of sorting the coordinates of the plurality of central area clusters according to a preset order includes:

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

The step of multiplexing the sorted central area clusters includes:

Let the coordinates of the leftmost central area cluster in the central area be x=1, set the coordinates of the uppermost cluster in the central area to be y=1; the numbering of multiplexing of the multiple central area clusters=((X- 1)mod 2)+((y-1)mod 2)×2.

Wherein, the step of obtaining the available PCI range of the central area cluster includes:

Obtain the PCI range of the base station;

According to the PCI range of the base station and the cluster multiplexing times, the available PCI range of the cluster in the central area is obtained.

Wherein, the step of automatically assigning the PCI to the cells of the base station according to the available PCI range of the central area cluster and the preset PCI range of the boundary cluster includes:

Obtaining physical location information and PCIs of all cells of the base station, and physical location information of cells that need to reassign PCIs;

Query the boundary or central area cluster where the cell is located according to the physical location information of the cell, and obtain the PCI range of the boundary cluster or the available PCI range of the central area cluster;

Counting the usage times of the PCI of the cell in the cluster where the cell is located;

According to the usage times of the PCI, the PCI is automatically allocated to the cell that needs to re-allocate the PCI.

Wherein, according to the usage times of the PCI, the step of automatically assigning the PCI to the sub-district that needs to redistribute the PCI includes:

If there is a PCI with a usage count of 0, select the PCI with a usage count of 0, and automatically assign a PCI to the cell that needs to reassign the PCI; otherwise, the distance between the selected new cell and the cell that uses the PCI is greater than the anti-collision threshold, and the new cell The PCIs whose distances from all other cells are less than or equal to two times below the anti-confusion threshold are used by the new cell, and the new cell is a cell that needs to re-allocate the PCI.

Among them, the cell that needs to re-allocate PCI is determined by the following method:

The base station detects PCI conflict and confusion by triggering the change of neighbor cell relationship and cell parameter change, and obtains the information of the conflicting and confusing cell pair, the PCI value of conflict and confusion, and the message type; and selects the cell with the most conflict and confusion and the least number of call establishments The cell is used as the cell for reassigning the PCI;

or

The base station detects PCI conflict and confusion by restarting, X2 interface interaction, switch trigger or periodic detection, and obtains the information of the conflicting and confusing cell pair, the PCI value of the conflict and confusing, and the message type; and selects the most conflicting and confusing times and the number of call establishments in the cell The least cell is used as the cell for reallocating the PCI.

Wherein, the base station reports the determined cells where the PCIs are reassigned to the network management system, and the network management system selects the cells where the PCIs are reassigned; A network management system, wherein the network management system re-allocates PCIs for the cells to which the PCIs are re-allocated.

Wherein, after the step of automatically assigning PCI to the cell of the base station, it also includes:

Displaying the PCI allocation result on the monitor of the network management system, obtaining the configuration mode selected by the user, moving out the terminals in the current community, and resetting the PCI of the community according to the selected configuration mode after confirmation by the user, Synchronize the PCI of the reset cell to the network element to take effect; or send the PCI allocation result to the base station, and the base station resets the PCI of the cell, and reports the setting result to the network management system, and updates Corresponding PCI and display the result of automatically assigning PCI on the monitoring;

or

Display the PCI allocation result on the monitoring of the network management system, and immediately automatically reset the PCI of the community, and synchronize the reset community PCI to the network element to take effect; or send the PCI allocation result to the base station, and The base station resets the PCI of the cell, reports the setting result to the network management system, updates the corresponding PCI, and displays the result of automatic allocation of the PCI on the monitor.

The present invention also provides a device for automatically detecting and assigning physical layer cell identifiers, including:

The first obtaining module is used to obtain the planning data of the cell of the base station and set the parameters required for the cell to automatically assign the physical layer cell identity PCI;

A division module, configured to divide the network area of the base station into clusters according to the planning data and the parameters, to obtain boundary clusters and central area clusters;

The second obtaining module is used to obtain the available PCI range of the central area cluster and the preset PCI range for the border cluster;

The PCI allocation module is configured to automatically allocate PCIs to the cells of the base station according to the available PCI ranges of the central area cluster and the preset PCI ranges of the border clusters.

Wherein, the division module includes:

A first obtaining submodule, configured to obtain the network area range of the base station according to the planning data;

A first division submodule, configured to divide the network area into boundary clusters in the space and a central area except the boundary clusters according to the parameters;

The second dividing sub-module is used to divide the central area into a plurality of central area clusters.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above solution, the network area of the base station is divided into boundary clusters and central area clusters, wherein the boundary clusters are the four boundary clusters of the east, south, west and north of the network area, and the PCI range is set for the boundary clusters, while the center Regional clusters automatically allocate PCIs, reducing PCI conflicts and confusion among cells, and solving the contradiction between the limited number of PCIs and the large number of cells, thereby enhancing the reliability of network deployment, reducing the manpower input for network planning and optimization, and Reduce operation and maintenance costs.

Description of drawings

Fig. 1 is a schematic flow chart of the method for automatically detecting and distributing physical layer cell identifiers of the present invention;

Fig. 2 is a schematic flow chart of cluster division in the method of the present invention;

Fig. 3 is a schematic diagram of the PCI allocation process in the method of the present invention;

Fig. 4 is the schematic diagram of the processing flow of PCI conflict confusion message in the method of the present invention;

5 is a schematic flow diagram of the interaction between the existing network management system of the base station in the method of the present invention;

Fig. 6 is the schematic diagram of the processing flow of PCI invalid value or unallocated PCI in the method of the present invention;

Fig. 7 is a schematic structural diagram of a device for automatically detecting and allocating physical layer cell identities according to the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

As shown in Figure 1, a method for automatically detecting and distributing physical layer cell identities in an embodiment of the present invention includes:

Step 11, obtaining the planning data of the cell of the base station and setting the parameters required for the cell to automatically assign the physical layer cell identity PCI;

Step 12, dividing the network area of the base station into clusters according to the planning data and the parameters to obtain boundary clusters and central area clusters;

Step 13, obtaining the available PCI range of the central region cluster and the preset PCI range for the border cluster;

Step 14, according to the available PCI range of the central area cluster and the preset PCI range of the border cluster, automatically assign PCI to the cell of the base station.

In this embodiment, the parameters preferably include: network boundary parameters and cluster size related parameters; the range of the network area is determined by the center position of the most border cell of the base station plus the radius of the border cell; by dividing the network area of the base station into Border clusters and central area clusters, where the border clusters are the east, south, west, and north border clusters of the network area, and the PCI range is set for the border clusters, while the central area clusters automatically allocate PCIs, so that PCI conflicts between cells And confusion is reduced, and the contradiction between the limited number of PCIs and the huge number of cells is solved.

In the above method embodiment shown in Figure 1, preferably, the above step 12 includes:

Step 121, obtaining the network area range of the base station according to the planning data;

Step 122, dividing the network area into boundary clusters in the space and a central area except the boundary clusters according to the parameters;

Step 123, dividing the central area into multiple central area clusters.

Further, the step 123 includes: obtaining the area of a cell cluster including multiple cells; dividing the central area into multiple central area clusters according to the area of the cell cluster.

Wherein, the step of obtaining the area of a cell cluster comprising multiple cells includes: obtaining the average area of the cells in the central area; specifically, the average area of the cells in the central area=the area of the central area/the number of cells in the central area; further obtaining the average area of the cells in the central area The first product obtained by multiplying the area by the minimum number of cells in the cluster; and the second product obtained by multiplying the minimum width of the cluster by the minimum height of the cluster; taking the larger of the first product and the second product as the obtained The cluster area of the above plots; that is, take the maximum value of the minimum number of plots in the cluster × the average area of the central area and the minimum width of the cluster × the minimum height of the cluster, and then assume that the cluster is a square, calculate the width and height of the cluster, and divide the central area into Several square clusters were formed.

Further, in the above method, after the step of dividing the central area into a plurality of central area clusters, it further includes: setting the coordinates of the plurality of central area clusters; The coordinates of the clusters are sorted; the multiplexed numbering of the sorted central area clusters is set, and the multiplexed clusters use the same PCI range.

Further, the step of sorting the coordinates of the plurality of central area clusters in a preset order includes: sorting the coordinates of the plurality of central area clusters in an increasing order;

The step of multiplexing the sorted central area clusters includes: setting the coordinate of the leftmost central area cluster in the central area as x=1, and setting the coordinate of the uppermost cluster in the central area The coordinate is y=1; the multiplexing number of the multiple central area clusters=((X-1)mod 2)+((y-1)mod 2)×2.

In the embodiments of all the above methods, in the step 13, the step of obtaining the PCI range available for the cluster in the central area includes: obtaining the PCI range of the base station; according to the PCI range of the base station, and the number of cluster multiplexing , to obtain the available PCI range of the central area cluster. For example, the network management can obtain the PCI range of different base stations, and then calculate the available PCI range for each cluster. The calculation method is: PCI range/cluster multiplexing times. The number of PCIs in the cluster must be greater than the minimum number of PCIs in the cluster. Otherwise, the cluster needs to be reconfigured. Divide or modify the minimum number of PCIs in a cluster, and then distribute the available PCIs evenly in multiplexed clusters.

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

Obtaining physical location information and PCIs of all cells of the base station, and physical location information of cells that need to reassign PCIs;

Query the boundary or central area cluster where the cell is located according to the physical location information of the cell, and obtain the PCI range of the boundary cluster or the available PCI range of the central area cluster;

Counting the usage times of the PCI of the cell in the cluster where the cell is located;

According to the usage times of the PCI, the PCI is automatically allocated to the cell that needs to re-allocate the PCI.

Further, the step of automatically assigning PCIs to cells that need to reassign PCIs according to the number of times of use of the PCIs includes: if there is a PCI whose number of times of use is 0, then select a PCI whose number of times of use is 0, and allocate PCIs that need to be reassigned. Otherwise, select the PCI whose distance between the new cell and the cell using the PCI is greater than the anti-collision threshold, and the number of times the distance between the new cell and all other cells is lower than the anti-confusion threshold is less than or equal to twice to the new cell Here, the new cell is a cell that needs to re-allocate the PCI.

Further, the cell that needs to re-allocate the PCI is determined in the following manner: the base station triggers the detection of PCI conflict confusion through the change of the neighbor cell relationship and the cell parameter change, and obtains the conflict confusion cell pair information, the conflict confusion PCI value and the message type; and Select the cell with the largest number of conflicts and confusions and the least number of call establishments in the cell as the cell for reassigning the PCI; or the base station detects PCI conflicts and confusions by restarting, X2 interface interaction, switch triggering or periodic detection, and obtains the conflicting and confusing cells For information, PCI value of conflict confusion and message type; and select the cell with the largest number of conflict confusion and the least number of call establishments among the cells as the cell for reassigning the PCI.

Wherein, the base station reports the determined cells where the PCIs are reassigned to the network management system, and the network management system selects the cells where the PCIs are reassigned; A network management system, wherein the network management system re-allocates PCIs for the cells to which the PCIs are re-allocated.

The detailed implementation process of the above-mentioned method embodiment is described below in combination with specific drawings:

The first specific implementation embodiment:

To realize the division of the cell cluster of the above-mentioned base station and the PCI automatic allocation process of the cell on the network management system, as shown in Figure 2, the method includes:

Step S101: Import all planning data of the base station through the network management system, plan the PCI of an unplanned cell or add a new base station and cell through the network management system in the already running network;

Step S102: Import or set relevant cluster allocation parameters (i.e. the parameters required for the above-mentioned automatic allocation of the physical layer cell identity PCI) through the network management system, including network boundary parameters and cluster size related parameters, wherein the network boundary parameters include: boundary cell radius , border width and border height, cluster size related parameters include: cluster reuse factor, minimum width of cell cluster, minimum height of cell cluster, maximum width of cell cluster, maximum height of cell cluster, maximum number of cells in a cluster, minimum number of cells in a cluster, The minimum number of available PCIs in the cluster, the shortest distance requirements to meet the minimum number of cells in the cluster, etc.;

Step S103: The network management system obtains the network area of the base station managed by the network management system according to the planning data: the center position of the most border cell plus the radius of the border cell;

Step S104: divide the clusters through the network management system, divide the network range into four boundary clusters of east, south, west and north according to the geographical location information of the cell, such as boundary width and boundary height, and the rest is the central area, and the boundary clusters use Pre-set boundary PCI range;

Step S105: divide the central area into clusters: calculate the average area of the central area, that is, the area of the central area/the number of the central area, and then calculate the area of the cluster, the method is to take the minimum number of small areas in the cluster × the average area of the central area and the number of clusters The maximum value of the minimum width × the minimum height of the cluster, and then assume that the cluster is a square, calculate the width and height of the cluster, and divide the central area into several square clusters at this time;

Step S106: Count the number of cells in the cluster. The number of cells needs to be greater than the minimum number of cells in the cluster and less than the maximum number of cells in the cluster. When the minimum number is counted, the cells whose inter-cell distance is less than the minimum distance requirement are not included in the statistics. That is, ignore cells with small distances to prevent too large a cell from increasing the probability of PCI conflicts. If it does not meet the requirements, you need to reset the cluster size or the minimum number of cells and the shortest distance requirements, and re-divide;

Step S107: Set the coordinates of the clusters in the central area, the coordinates of the leftmost cluster in the central area are x=1, and the coordinates of the uppermost cluster in the central area are y=1; then carry out the coordinates from left to right and from top to bottom Increment; then set the number of the multiplexing cluster, the specific method is cluster multiplexing number = ((x-1) mod2) + ((y-1) mod 2) × 2, the multiplexing cluster uses the same PCI range;

Step S108: The network management system obtains the PCI ranges of different base stations, and then calculates the available PCI range for each cluster. The calculation method is: PCI range/cluster multiplexing times. The number of PCIs in the cluster needs to be greater than the minimum number of PCIs in the cluster, otherwise it needs to be performed again Cluster division or modification of the minimum number of PCIs in a cluster, and then evenly distribute the available PCIs in multiplexed clusters; the calculation method for the central area cluster of a base station is the same;

Step S109: enabling the PCI automatic allocation function on the network management system;

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

As shown in Figure 3, the automatic allocation process of PCI may include:

Step S111: the network management system obtains the physical locations and PCI information of all the cells in the network area of the base station, and the geographical location information of the cells that need to reassign the PCI;

Step S112: Query the cluster where the cell is located according to the geographic location of the cell where the PCI needs to be allocated, so as to obtain the PCI range in the cluster, count the usage times of the PCI in the cluster, and arrange them in descending order;

Step S113: firstly select an unused PCI (i.e. a PCI whose number of times of use is 0), if there is no unused PCI, then select the distance between the new cell and the cell using this PCI to be greater than the anti-collision threshold, and the new cell and all other cells The number of times the distance is lower than the anti-confusion threshold is less than or equal to two PCIs are used by the new cell, and each time a PCI is allocated, the number of times the PCI is used is updated;

Step S114: The network management updates the PCI of the corresponding cell, and displays the PCI allocation result on the monitoring center of the network management system.

The second concrete realization embodiment of above-mentioned method of the present invention:

Still realize the division of the cell cluster of the above-mentioned base station and the PCI automatic optimization process of the cell on the network management system, as shown in Figure 4 and Figure 5, the method includes:

Step S201: enabling the PCI self-optimization function on the network management system;

Step S202: The base station detects the PCI conflict confusion triggered by the change of the neighbor cell relationship and the cell parameter change, and reports the detection result to the network management system. The reported information includes the conflict confusion cell pair information (cell ECGI), the conflict confusion PCI value, and the message type (conflict or confusion);

Step S203: the network management system receives the message reported by the base station, and then selects the cell with the largest number of occurrences and the smallest number of call establishments in the cell as the cell for reallocating the PCI;

Step S204: The network management system reports the information of the cells that need to reassign the PCI to the SON monitoring center, and continues to execute after the user confirms;

Step S205: the network management system acquires the physical locations and PCI information of all the cells of the base station and the physical location information of the cells that need to reassign the PCI;

Step S206: Query the cluster where the cell is located according to the physical location of the cell, so as to obtain the PCI range in the cluster, count the number of PCI usages in the cluster, and arrange them in descending order;

Step S207: First select an unused PCI, if there is no unused PCI, select the number of times 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-confusion threshold PCIs that are less than or equal to two times are used by the new cell, and each time a PCI is allocated, the number of PCI usages is updated;

Step S208: The network management system displays the PCI allocation results on the SON monitor, and after the user selects the configuration mode (immediately, manually, and scheduled time), prompts the possible network impact caused by reallocating the PCI, and moves the UE in the current cell out, and the user After confirmation, reset the PCI of the community according to the pre-configuration method;

Step S209: The network management system synchronizes the reset cell parameters to the network element to take effect or the network management sends the assigned PCI to the base station, the base station resets the cell PCI, and reports the setting result to the network management.

Step S210: If the network manager sets the PCI, the network manager directly displays the PCI automatic allocation result on the SON monitor; if the base station sets the PCI, the network manager updates the corresponding PCI and displays the PCI automatic allocation result on the SON monitor.

The third specific implementation embodiment of the above-mentioned method of the present invention:

Still realize the division of the cell cluster of the above-mentioned base station and the PCI automatic optimization process of the cell on the network management system, as shown in Figure 4 and Figure 5, the method includes:

Step S301: enable the PCI self-optimization function on the network management with the step S201 of the second specific implementation embodiment above;

Step S302: The base station detects PCI conflict confusion by restarting, interacting with the X2 port, and triggering the switch, and reports the message to the network management system;

Steps S303-S310 are the same as steps S203-S210 in the above second specific implementation embodiment.

The fourth specific implementation embodiment of the above-mentioned method of the present invention:

Still realize the division of the cell cluster of the above-mentioned base station and the PCI automatic optimization process of the cell on the network management system, as shown in Figure 4 and Figure 5, the method includes:

Step S401: Same as step S201 in the above-mentioned second specific implementation embodiment;

Step S402: the base station reports the detection result to the network management system through periodic detection;

Steps S403-S410 are the same as steps S203-S210 in the above second specific implementation embodiment.

The fifth specific implementation embodiment of the above-mentioned method of the present invention:

Still realize the division of the cell cluster of the above-mentioned base station and the PCI automatic optimization process of the cell on the network management system, as shown in Figure 4 and Figure 5, the method includes:

Step S501: Same as step S201 in the second specific implementation embodiment above;

Step S502: The base station reports the result of detecting PCI conflict confusion to the network management, and the detection method includes the detection methods described in steps S202, S302, and S402 in the second, third, and fourth specific implementation examples above;

Step S503: Same as step S203 in the second specific implementation embodiment above;

Step S504: the network management system reports the information of the cell that needs to be redistributed to the SON monitoring center;

Step S505: Same as step S111 in Embodiment 1;

Step S506: Same as step S112 in Embodiment 1;

Step S507: Same as Step S113 in Embodiment 1;

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

Step S509: the network management system synchronizes the reset cell parameters to the network element to take effect or the network management sends the assigned PCI to the base station, the base station resets the cell PCI, and reports the setting result to the network management system;

Step S510: If the network manager sets the PCI, directly display the PCI automatic allocation result on the SON monitor; if the base station sets the PCI, the network management system updates the corresponding PCI and displays the PCI automatic allocation result on the SON monitor.

The sixth specific implementation embodiment of the above-mentioned method of the present invention:

Still realize the division of the cell cluster of the above-mentioned base station and the PCI automatic optimization process of the cell on the network management system, as shown in Figure 4, Figure 5, and Figure 6, the method includes:

Step S601: When the base station restarts or when the PCI of the cell changes, or through periodic detection, it detects whether the PCI value is allocated or whether it is an invalid value, reports the detection result to the network management, and reports the cell ECGI (Eutran Cell Goal Identify) whose parameters include invalid values , that is, mobile country code MCC, mobile network code MNC, base station ID, cell ID;

The following steps are the same as step S204 to step S210 in the above-mentioned second specific implementation embodiment.

The seventh specific implementation embodiment of the above-mentioned method of the present invention:

Still realize the division of the cell cluster of the above-mentioned base station and the PCI automatic optimization process of the cell on the network management system, as shown in Figure 4, Figure 5, and Figure 6, the method includes:

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

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

As shown in FIG. 7, corresponding to the above method, an embodiment of the present invention also provides an apparatus 70 for automatically detecting and assigning physical layer cell identities, including:

The first obtaining module is used to obtain the planning data of the cell of the base station and set the parameters required for the cell to automatically assign the physical layer cell identity PCI;

A division module, configured to divide the network area of the base station into clusters according to the planning data and the parameters, to obtain boundary clusters and central area clusters;

The second obtaining module is used to obtain the available PCI range of the central area cluster and the preset PCI range for the border cluster;

The PCI allocation module is configured to automatically allocate PCIs to the cells of the base station according to the available PCI ranges of the central area cluster and the preset PCI ranges of the border clusters.

Wherein, the division module includes:

A first obtaining submodule, configured to obtain the network area range of the base station according to the planning data;

A first division submodule, configured to divide the network area into boundary clusters in the space and a central area except the boundary clusters according to the parameters;

The second dividing sub-module is used to divide the central area into a plurality of central area clusters.

Furthermore, all the features in the above method embodiments are applicable to the device embodiment, and can also achieve the same technical effect, and will not be repeated here.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (14)

1. A method for automatically detecting and distributing physical layer cell identifiers, characterized in that, comprising: Obtaining the planning data of the cell of the base station and setting the parameters required for the cell to automatically assign the physical layer cell identity PCI; dividing the network area of the base station into clusters according to the planning data and the parameters to obtain boundary clusters and central area clusters; obtaining the PCI range available for the center cluster and the preset PCI range for the border cluster; Automatically allocate PCIs to the cells of the base station according to the available PCI ranges of the central area cluster and the preset PCI ranges of the border clusters. 2. The method according to claim 1, wherein the step of dividing the network area of the base station into clusters according to the planning data and the parameters to obtain boundary clusters and central area clusters comprises: Obtaining the network area range of the base station according to the planning data; dividing the network area into boundary clusters in the space and a central area except the boundary clusters according to the parameters; The central area is divided into a plurality of central area clusters. 3. The method according to claim 2, wherein the step of dividing the central area into a plurality of central area clusters comprises: Obtain the area of a cell cluster comprising a plurality of cells; The central area is divided into multiple central area clusters according to the area of the cell cluster. 4. The method according to claim 3, wherein the step of obtaining the area of a cell cluster comprising a plurality of cells comprises: Obtaining the average area of the cells in the central area; Obtaining the first product obtained by multiplying the average area of the cell by the minimum number of cells in the cluster; Obtain the second product obtained by multiplying the cluster minimum width by the cluster minimum height; Taking the larger of the first product and the second product as the cell cluster area. 5. The method according to claim 2, 3 or 4, wherein the step of dividing the central area into a plurality of central area clusters further comprises: performing coordinate setting on the plurality of central area clusters; sorting the coordinates of the plurality of central area clusters according to a preset order; Multiplex numbering is performed on the sorted plurality of central area clusters, and the multiplexed clusters use the same PCI range. 6. The method according to claim 5, wherein the step of sorting the coordinates of the plurality of central area clusters according to a preset order comprises: sorting the coordinates of the plurality of central region clusters in increasing order; The step of multiplexing the sorted multiple central area clusters includes: Let the coordinates of the leftmost central area cluster in the central area be x=1, set the coordinates of the uppermost cluster in the central area to be y=1; the numbering of multiplexing of the multiple central area clusters=((X- 1)mod 2)+((y-1)mod 2)×2. 7. The method according to claim 1, wherein the step of obtaining the available PCI range of the central area cluster comprises: Obtain the PCI range of the base station; According to the PCI range of the base station and the cluster multiplexing times, the available PCI range of the cluster in the central area is obtained. 8. The method according to claim 1 or 7, wherein, according to the available PCI range of the central area cluster and the preset PCI range of the boundary cluster, the cells of the base station are automatically assigned the PCI range Steps include: Obtaining physical location information and PCIs of all cells of the base station, and physical location information of cells that need to reassign PCIs; Query the boundary or central area cluster where the cell is located according to the physical location information of the cell, and obtain the PCI range of the boundary cluster or the available PCI range of the central area cluster; Counting the usage times of the PCI of the cell in the cluster where the cell is located; According to the usage times of the PCI, the PCI is automatically allocated to the cell that needs to re-allocate the PCI. 9. The method according to claim 8, characterized in that, according to the number of times of use of the PCI, the step of automatically assigning the PCI to the sub-district that needs to redistribute the PCI comprises: If there is a PCI with a usage count of 0, select the PCI with a usage count of 0, and automatically assign a PCI to the cell that needs to reassign the PCI; otherwise, the distance between the selected new cell and the cell that uses the PCI is greater than the anti-collision threshold, and the new cell The PCIs whose distances from all other cells are less than or equal to two times below the anti-confusion threshold are used by the new cell, and the new cell is a cell that needs to re-allocate the PCI. 10. The method according to claim 9, wherein the sub-district that needs to redistribute PCI is determined in the following manner: The base station detects PCI conflict and confusion by triggering the change of neighbor cell relationship and cell parameter change, and obtains the information of the conflicting and confusing cell pair, the PCI value of conflict and confusion, and the message type; and selects the one with the most conflict and confusion and the least number of call establishments in the cell The cell is used as the cell for reassigning the PCI; or The base station detects PCI conflict and confusion by restarting, X2 interface interaction, switch trigger or periodic detection, and obtains the information of the conflicting and confusing cell pair, the PCI value of the conflict and confusing, and the message type; and selects the most conflicting and confusing times and the number of call establishments in the cell The least cell is used as the cell for reallocating the PCI. 11. The method according to claim 10, wherein the base station reports the determined sub-district of redistributed PCI to a network management system, and the network management system selects the sub-district of redistributed PCI; or the base station Self-select the cells that need to re-allocate PCIs and report to the network management system, and the network management system re-allocates PCIs for the cells that need to re-allocate PCIs. 12. The method according to claim 11, further comprising: Displaying the PCI allocation result on the monitor of the network management system, obtaining the configuration mode selected by the user, moving out the terminals in the current community, and resetting the PCI of the community according to the selected configuration mode after confirmation by the user, Synchronize the PCI of the reset cell to the network element to take effect; or send the PCI allocation result to the base station, and the base station resets the PCI of the cell, and reports the setting result to the network management system, and updates Corresponding PCI and display the result of automatically assigning PCI on the monitoring; or Display the PCI allocation result on the monitoring of the network management system, and immediately automatically reset the PCI of the community, and synchronize the reset community PCI to the network element to take effect; or send the PCI allocation result to the base station, and The base station resets the PCI of the cell, reports the setting result to the network management system, updates the corresponding PCI, and displays the result of automatic allocation of the PCI on the monitor. 13. A device for automatically detecting and distributing physical layer cell identities, comprising: The first obtaining module is used to obtain the planning data of the cell of the base station and set the parameters required for the cell to automatically assign the physical layer cell identity PCI; A division module, configured to divide the network area of the base station into clusters according to the planning data and the parameters, to obtain boundary clusters and central area clusters; The second obtaining module is used to obtain the available PCI range of the central area cluster and the preset PCI range for the border cluster; The PCI allocation module is configured to automatically allocate PCIs to the cells of the base station according to the available PCI ranges of the central area cluster and the preset PCI ranges of the border clusters. 14. The device according to claim 13, wherein the dividing module comprises: A first obtaining submodule, configured to obtain the network area range of the base station according to the planning data; A first division submodule, configured to divide the network area into boundary clusters in the space and a central area except the boundary clusters according to the parameters; The second dividing sub-module is used to divide the central area into a plurality of central area clusters.

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