CN101959222A - Method and system for self-optimization of neighbor list in wireless communication network - Google Patents

Abstract

The invention discloses a method and a system for self-optimizing a wireless communication network neighbor list, wherein the method comprises the following steps: the wireless network controller sends a message for triggering the self-optimization of the neighbor cell list to a network management platform; and the network management platform judges whether the self-optimization of the neighbor list is carried out or not according to the self-optimization parameters of the neighbor list, and if so, the network management platform carries out the operation of deleting the neighbor or adding the neighbor to the neighbor list according to the judgment result. The invention can effectively solve the problems of the missing configuration and the redundant configuration of the adjacent cells, so that the adjacent cell list can automatically converge to the optimal state in a complex and changeable wireless environment, the adjacent cell optimization efficiency can be improved, the system construction cost can be reduced, and the system switching performance can be improved.

Description

Method and system for self-optimization of neighbor list in wireless communication network

technical field

The invention relates to the field of wireless communication, in particular to a method and a system for self-optimizing a neighbor list of a wireless communication network.

Background technique

Ensuring service continuity for mobile users is a basic function of a wireless communication system, and handover of UE serving cells is the main means to ensure service continuity.

In a cellular mobile communication system, UE (User Equipment, mobile station, or user equipment) needs to measure the radio quality of adjacent cells in order to switch serving cells. Due to the limitation of UE measurement capability and measurement efficiency, the number of neighboring cells that UE can simultaneously measure is limited (such as WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access)/LTE (Long Term Evolution, long-term evolution) FDD (Frequency In the Division Duplex (Frequency Division Duplex) system, there are up to 32 co-frequency adjacent cells, up to 32 inter-frequency adjacent cells, and up to 32 inter-system adjacent cells). Which neighbor cells to be specifically measured by the UE is determined according to the neighbor cell list configured on the network side.

The number of neighboring cells around a certain cell is not only related to the distance between cells, but also closely related to the wireless environment in which the cell is located. Due to the complex wireless environment, especially the urban environment with dense high-rise buildings, it is difficult to accurately determine which neighboring cells should be configured for a certain cell at the initial stage of network planning. Too many neighbor cell configurations may exceed UE measurement capability; too few neighbor cell configurations may miss some neighbor cell configurations, affecting handover performance. Therefore, the accurate configuration of the neighbor list has a great influence on the performance of the wireless network.

The configuration of the neighboring cell list adopts the static configuration method in the current conventional implementation: the network planning engineer plans the neighboring cell during network construction, and statically configures the neighboring cell list through the OMC (Operation Maintenance Controller, network management platform); In the process, the network optimization engineer checks the neighbor cell leakage configuration and redundant configuration according to the network performance index and the change of the business environment, and optimizes the neighbor cell list. When missing configuration of neighboring cells is found, the missing configuration neighboring cells are added to the neighboring cell list by manual input method; when redundancy of neighboring cell configurations is found, redundant neighboring cells are deleted from the neighboring cell list by manual output method. Among them, the process of adjacent cell missing configuration and redundant configuration detection requires a lot of manpower and material resources, and the wireless environment changes over time, resulting in adjacent cell missing configuration and redundant configuration detection are often accompanied by the operation process of the entire network. The most tedious link in the process of network construction and optimization. At present, there have been a large number of attempts of auxiliary methods for neighborhood optimization, but there is no mature solution.

Contents of the invention

The technical problem to be solved by the present invention is to solve the problem of missing configuration and redundant configuration of neighboring cells in wireless communication network, and propose a method and system for self-optimizing the neighboring cell list of wireless communication network.

In order to solve the above-mentioned technical problems, the present invention provides a method for self-optimizing a neighbor list of a wireless communication network, including:

The wireless network controller sends a message to trigger the self-optimization of the neighbor list to the network management platform;

The network management platform judges whether to perform self-optimization of the neighbor list according to the parameters of the neighbor list self-optimization, and if so, deletes neighbors or adds neighbors to the neighbor list according to the judgment result.

Further, the above method can also have the following characteristics:

The message that triggers the self-optimization of the neighbor list includes a neighbor deletion trigger message and a neighbor addition trigger message;

For the situation of adjacent cell redundant configuration, the method specifically includes:

The radio network controller sends a neighbor cell deletion trigger message to the network management platform; the network management platform selects the neighbor cell with the least number of handover triggers among all the neighbor cells in the currently activated cell set as the target neighbor cell to be deleted, and automatically selects the neighbor cell according to the neighbor cell list. The optimized parameter judges whether to delete the operation of the adjacent cell, if so, then deletes the target adjacent cell to be deleted from the adjacent cell list of the current active set cell;

For the case of missing configuration of adjacent cells, the method specifically includes:

The radio network controller sends a neighbor cell increase trigger message to the network management platform, and notifies the network management platform of the potential handover target cell; the network management platform judges whether to perform the operation of adding a neighbor cell according to the self-optimized parameters of the neighbor cell list, If yes, add the potential handover target cell into the neighbor cell list of the cells in the current active set.

Further, the above method can also have the following characteristics:

When the radio network controller finds that the cells in the current active set have changed, it judges whether the combined number of adjacent cells of the cells in the active set exceeds the trigger threshold for deleting adjacent cells, and if so, sends a trigger message for deleting adjacent cells to the network management platform.

Further, the above method can also have the following characteristics:

The parameters of the self-optimization of the neighbor list include a neighbor list update sample number threshold and a neighbor delete threshold;

The network management platform judges whether to delete the neighbor cell according to the parameters of the neighbor cell list self-optimization, and if so, deletes the target neighbor cell to be deleted from the neighbor cell list of the current active set cell, specifically refers to:

If the network management platform judges that the sum of the number of handovers triggered by the neighboring cells of the currently active concentrated cell is greater than the threshold for updating the number of samples of the neighboring cell list, and the number of handovers triggered by the target neighboring cell to be deleted is less than the threshold for deleting the adjacent cell, then the The target neighbor cell to be deleted is deleted from the neighbor cell list of the current active set cell.

Further, the above method can also have the following characteristics:

If the network management platform judges that the sum of the number of handovers triggered by the adjacent cells of the currently activated cell is greater than the threshold for updating the sample number of adjacent cell lists, and the number of handovers triggered by the target adjacent cell to be deleted is greater than or equal to the threshold for deleting adjacent cells, then The network management platform alerts that the current cell is in a strong interference area, and network coverage optimization is required.

Further, the above method can also have the following characteristics:

When the radio network controller finds that a cell out of the neighbor list is a potential handover target cell through detection set measurement or periodic detection of neighbor cells, it sends a trigger message for adding a neighbor cell to the network management platform, and through adding The trigger message carries the identification information of the handover target cell, and notifies the network management platform of the potential handover target cell.

Further, the above method can also have the following characteristics:

The parameters of the self-optimization of the neighbor list include a trigger threshold for neighbor addition;

The network management platform judges whether to perform the operation of adding a neighbor according to the parameters of the self-optimization of the neighbor list, and if so, adds the potential handover target cell to the neighbor list of the currently active set cell, specifically refers to:

If the network management platform judges that the number of the union of adjacent cells of the cells in the current active set is less than the trigger threshold for adding adjacent cells, the potential handover target cell is added to the list of adjacent cells of the cells in the current active set.

Further, the above method can also have the following characteristics:

If the network management platform judges that the number of adjacent cell unions of the currently activated cells is greater than or equal to the trigger threshold for adding adjacent cells, the network management platform will give an alarm, and the current cell is in a strong interference area, and network coverage optimization is required.

In order to solve the above technical problems, the present invention also provides a system for self-optimizing the neighbor list of a wireless communication network, including a wireless network controller and a network management platform,

The wireless network controller is used to send a message triggering the self-optimization of the neighbor list to the network management platform;

The network management platform is used to judge whether to perform self-optimization of the neighbor list according to the parameters of the neighbor list self-optimization, and if so, delete or add neighbor cells to the neighbor list according to the judgment result.

Further, the above system can also have the following characteristics:

The radio network controller is further configured to send a trigger message for deleting adjacent cells to the network management platform; and, the radio network controller is further configured to send a trigger message for adding adjacent cells to the network management platform to inform the potential handover target cell network management platform;

The network management platform is further configured to select, after receiving the neighbor cell deletion trigger message, the neighbor cell with the least number of triggered handovers as the target neighbor cell to be deleted, and judge whether to delete the neighbor cell according to the parameters of the self-optimization of the neighbor cell list Operation, if yes, delete the target neighbor cell to be deleted from the neighbor cell list of the current active set cell; and, the network management platform is further configured to, according to the The list is self-optimized to determine whether to add neighbor cells, and if so, add the potential handover target cell to the neighbor list of cells in the current active set.

The invention proposes a method and a system for self-optimizing the neighbor list of the wireless communication network aiming at the heavy workload problems of neighbor cell missing configuration and redundant configuration detection and neighbor list optimization in the wireless communication network. The present invention can effectively solve the problem of missing configuration and redundant configuration of neighboring cells, so that the list of neighboring cells can automatically converge to the best state in complex and changeable wireless environments, which can improve the efficiency of neighboring cell optimization, reduce system construction costs, Improve system switching performance.

Description of drawings

Fig. 1 is a flow chart of an embodiment of the present invention for the situation of adjacent cell redundant configuration;

Fig. 2 is the WCDMA system adjacent cell automatic deletion flowchart of application example of the present invention;

Fig. 3 is that the OMC of the application example of the present invention carries out the adjacent cell deletion judgment flow chart;

FIG. 4 is a flow chart of an embodiment of the present invention for the case of adjacent cell leakage configuration;

Fig. 5 is the WCDMA system neighbor cell automatic increase flowchart of application example of the present invention;

Fig. 6 is a flow chart of the OMC making a decision on adding adjacent cells in an application example of the present invention.

Detailed ways

In the present invention, the message that triggers the self-optimization of the neighbor list is sent to the OMC by the RNC (Radio Network Controller, radio network controller), and the OMC judges whether to carry out the self-optimization of the neighbor list according to the parameters of the neighbor list self-optimization, if so, then According to the judgment result, an operation of self-optimizing the neighbor list (deleting neighbors or adding neighbors) is performed on the neighbor list.

Wherein, the message triggering the self-optimization of the neighboring cell list includes a neighboring cell deletion trigger message and a neighboring cell addition trigger message;

The parameters for the self-optimization of the neighbor list include: the trigger threshold for deleting the neighbor cell DelNbrThreshold, the threshold for deleting the neighbor cell DelNbrPermittedThreshold, the trigger threshold for adding the neighbor cell AddNbrThreshold, and the threshold SampleThreshold for updating the neighbor list.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, for the situation of adjacent cell redundancy configuration, the method specifically includes:

Step 101, RNC sends a neighbor cell deletion trigger message to OMC;

Preferably, when the RNC finds that the cells in the current active set have changed, it is judged whether the union number of adjacent cells of the cells in the current active set (i.e. the number of all adjacent cells in the cell in the current active set) exceeds the trigger threshold for deleting adjacent cells, if so, Then send a neighbor cell deletion trigger message to the OMC;

The neighbor cell deletion trigger message carries the identification information of the currently activated cell;

Step 102, the OMC selects the neighbor cell with the least number of handover triggers among all the neighbor cells in the currently activated cell set as the target neighbor cell to be deleted, and judges whether to delete the neighbor cell according to the self-optimized parameters of the neighbor cell list, and if so, deletes the neighbor cell The target neighbor cell to be deleted is deleted from the neighbor cell list of the cells in the current active set.

Preferably, the OMC counts the number of handovers triggered by each neighboring cell in the neighboring cell list of each cell in units of cells, and sorts the number of handovers triggered by all neighboring cells of the currently activated cells contained in the neighbor cell deletion trigger message, Select the neighbor cell with the least number of handover triggers as the target neighbor cell to be deleted;

Preferably, if the OMC judges that the sum of the number of handovers triggered by the neighboring cells of the currently activated cell is greater than the threshold for updating the number of samples in the neighboring cell list, and the number of handovers triggered by the target neighboring cell to be deleted is less than the threshold for deleting the neighboring cell, then the The target neighbor cell to be deleted is deleted from the neighbor cell list of the current active set cell;

If the OMC judges that the sum of the number of handovers triggered by the adjacent cells of the currently active concentrated cell is greater than the threshold for updating the sample number of the adjacent cell list, and the number of handovers triggered by the target adjacent cell to be deleted is greater than or equal to the threshold for deleting the adjacent cell, then the OMC will give an alarm , the current cell is in a strong interference area, and network coverage optimization is required.

As shown in FIGS. 2 to 3 , an application example is used to describe the process of redundant configuration of neighboring cells in detail.

Fig. 2 is the WCDMA system adjacent cell automatic deletion flowchart of application example of the present invention, comprises the following steps:

Step 201, the RNC judges that the number of adjacent cell unions of the active concentrated cell has exceeded the trigger threshold DelNbrThreshold for deleting the adjacent cell when the active concentrated cell changes, and then executes step 202;

Step 202, the RNC sends a neighbor cell deletion message to the OMC, which includes the currently activated cell identity;

In step 203, the OMC makes a decision to delete a neighboring cell, see FIG. 3 for details.

Fig. 3 is that the OMC of the application example of the present invention carries out the adjacent cell deletion judgment flow chart, comprises the following steps:

Step 301, OMC receives the neighbor cell deletion trigger message, obtains the cell identifier of the current active set in it, that is, knows the cell in the current active set; obtains the configured neighbor cell delete threshold DelNbrPermittedThreshold, neighbor cell list update sample number threshold SampleThreshold parameters locally ;

Step 302, the OMC sorts the number of handovers triggered by all neighboring cells of the currently activated cell, and the neighboring cell with the least number of triggered handovers is used as the target neighboring cell to be deleted;

In step 303, the OMC determines whether the sum of the number of handovers triggered by neighboring cells of the cell in the current active set is greater than the threshold for updating samples of the neighboring cell list? If it is 304; otherwise, no operation;

In step 304, the OMC judges whether the number of handovers triggered by the target cell to be deleted is less than the threshold for the adjacent cell to be deleted? If yes, execute step 305; otherwise, execute step 306;

Step 305, deleting the target cell to be deleted from the neighbor list of cells in the current active set, and ending this process;

Step 306, the OMC sends an alarm, notifying the administrator that the current cell is in a strong interference area, and network coverage optimization is required (this situation needs to be manually handled by the administrator), and this process ends.

As shown in Figure 4, for the situation of adjacent cell leakage configuration, the method specifically includes:

Step 401, the RNC sends a neighboring cell increase trigger message to the OMC, and notifies the OMC of the potential handover target cell;

Preferably, when the RNC finds that a cell outside the neighbor list is a potential handover target cell by detecting the set measurement or periodically detecting the neighbor cell, it sends a neighbor cell increase trigger message to the OMC;

Among them, for a system that supports detection set measurement, the potential handover target cell is the cell that triggers the detection set measurement report; for a system that does not support detection set measurement, it can be judged whether it is a potential cell by periodically detecting surrounding cells. handover target cell;

Preferably, the RNC notifies the OMC of the potential handover target cell by carrying the identification information of the potential handover target cell in the neighbor cell addition trigger message;

The neighbor cell addition trigger message also carries the identification information of the currently activated cells;

In step 402, the OMC judges whether to add a neighboring cell based on the self-optimized parameters of the neighboring cell list, and if so, adds the potential handover target cell to the neighboring cell list of the cells in the current active set.

Preferably, if the OMC judges that the number of the union of adjacent cells of the cells in the current active set is less than the trigger threshold for adding adjacent cells, then adding the potential handover target cell to the list of adjacent cells of the cells in the current active set;

If the OMC judges that the number of adjacent cell unions of the currently activated cells is greater than or equal to the trigger threshold for adding adjacent cells, the OMC will give an alarm that the current cell is in a strong interference area and needs to be optimized for network coverage.

As shown in FIGS. 5 to 6 , an application example is used to describe in detail the process of leak configuration of neighboring cells.

Fig. 5 is the WCDMA system neighbor cell automatic increase flowchart of the application example of the present invention, take this application example as the example of the neighbor cell automatic increase in the system that supports detection set measurement, comprises the following steps:

Step 501, the RNC sends a measurement control message for establishing the detection set measurement to the UE, and starts the detection set measurement;

Step 502, UE performs detection set measurement;

Step 503, when the UE finds that the neighboring cells in the detection set (neighboring cells outside the neighboring cell list) meet the measurement reporting rules, report to the RNC through a measurement report message;

Step 504, after the RNC receives the detection set measurement report message, it sends a neighbor cell increase trigger message to the OMC, by carrying in the message the identification information of the cell (i.e. the potential handover target cell) that triggers the detection set measurement report and the currently activated cell Notify the OMC of the cell that triggers the detection set measurement report and the cell in the current active set;

In step 505, the OMC makes a judgment on adding neighboring cells, see FIG. 6 for details.

The OMC of Fig. 6 application example of the present invention carries out adjacent cell increase judgment flow chart, comprises the following steps:

Step 601, the OMC receives the neighbor cell increase trigger message, learns the potential handover target cell and the cell in the current active set; and obtains the locally configured neighbor cell increase trigger threshold AddNbrPermittedThreshold parameter;

Step 602, the OMC judges whether the number of adjacent cells in the currently activated cell is less than the adjacent cell can increase the trigger threshold AddNbrPermittedThreshold, if so, execute step 603; otherwise, execute step 604;

Step 603, the OMC adds the target cell to the neighbor cell list of the currently active set cell, and ends the procedure;

In step 604, the OMC sends an alarm, notifying the administrator that the current cell is in a strong interference area, and network coverage optimization is required (this situation needs to be manually handled by the administrator), and this process ends.

The system for self-optimizing the neighbor list of the wireless communication network according to the embodiment of the present invention includes RNC and OMC,

Wherein, the RNC is used to send a message triggering the self-optimization of the neighbor list to the OMC;

The OMC is used to judge whether to perform the self-optimization of the neighbor list according to the parameters of the neighbor list self-optimization, and if so, delete or add neighbor cells to the neighbor list according to the judgment result.

Specifically,

The RNC is used to determine whether the number of adjacent cell unions of cells in the current active set exceeds the trigger threshold for deleting adjacent cells when it is found that the cells in the current active set have changed, and if so, send a trigger message for deleting adjacent cells to the OMC; and , the RNC is used to send a neighbor cell increase trigger message to the OMC when it finds that a cell outside the neighbor cell list is a potential handover target cell through detection set measurement or periodic detection of adjacent cells, and informs the potential handover target cell OMC;

The OMC includes: a sequentially connected performance statistics module, a judgment module and an alarm module,

Wherein, the performance statistics module is used to count the number of handovers triggered by each neighbor cell in the neighbor cell list of each cell in units of cells;

Preferably, the data organization of switching times statistics can adopt an array structure: Cell[1...MaxCellNum].NbrList[1...32].HoNum, where [] represents an array, such as Cell[i].NbrList[j ].HoNum indicates the number of handovers triggered by the jth neighbor cell of cell i; if the cell that triggers the handover is a neighbor cell of multiple cells in the active set, the number of handovers should be counted into the corresponding multiple cells at the same time when counting the number of handovers;

The judging module is configured to obtain, from the performance statistics module, the number of handovers triggered by all neighboring cells of the cell in the current active set after receiving the neighbor cell deletion trigger message, and select the neighboring cell with the least number of triggered handovers as the one to be deleted. Target neighboring cell, when judging that the sum of the number of handovers triggered by the neighboring cells of the currently activated cell is greater than the threshold for updating the sample number of the neighboring cell list, and the number of handovers triggered by the target neighboring cell to be deleted is less than the threshold for deleting the adjacent cell, delete the pending cell The deleted target neighbor cell is deleted from the neighbor cell list of the cell in the current active set; it is judged that the sum of the number of handovers triggered by the neighbor cells of the cell in the current active set is greater than the threshold for updating the sample number of the neighbor cell list, and the handover triggered by the target neighbor cell to be deleted When the number of times is greater than or equal to the threshold that the neighbor cell can be deleted, the alarm module is notified to warn; When the trigger threshold is increased in the area, the potential handover target cell will be added to the neighbor cell list of the current active set cell; when it is judged that the number of adjacent cell unions of the currently active set cell is greater than or equal to the neighbor cell increase trigger threshold, the notification will be made. Alarm module alarm;

The judging module is configured to give an alarm according to the received warning notification from the judging module, and notify the administrator that the current cell is in a strong interference area, and network coverage optimization is required.

The present invention is applicable to systems such as WCDMA, CDMA2000, TD-SCDMA (Time-Division Synchronization Code Division-Multiple-Access, Time-Division-Synchronization Code Division Multiple) and other systems that do not support macro-diversity, and are a special case where the maximum number of cells in the active concentration is 1. The union of the adjacent cells of the active concentrated cells is the adjacent cells of the current cell, so the present invention is also applicable to systems that do not support macro-diversity.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. A method for self-optimizing a wireless communication network neighbor list, comprising: The wireless network controller sends a message to trigger the self-optimization of the neighbor list to the network management platform; The network management platform judges whether to perform self-optimization of the neighbor list according to the parameters of the neighbor list self-optimization, and if so, deletes neighbors or adds neighbors to the neighbor list according to the judgment result. 2. The method of claim 1, wherein The message that triggers the self-optimization of the neighbor list includes a neighbor deletion trigger message and a neighbor addition trigger message; For the situation of adjacent cell redundant configuration, the method specifically includes: The radio network controller sends a neighbor cell deletion trigger message to the network management platform; the network management platform selects the neighbor cell with the least number of handover triggers among all the neighbor cells in the currently activated cell set as the target neighbor cell to be deleted, and automatically selects the neighbor cell according to the neighbor cell list. The optimized parameter judges whether to delete the operation of the adjacent cell, if so, then deletes the target adjacent cell to be deleted from the adjacent cell list of the current active set cell; For the case of missing configuration of adjacent cells, the method specifically includes: The radio network controller sends a neighbor cell increase trigger message to the network management platform, and notifies the network management platform of the potential handover target cell; the network management platform judges whether to perform the operation of adding a neighbor cell according to the self-optimized parameters of the neighbor cell list, If yes, add the potential handover target cell into the neighbor cell list of the cells in the current active set. 3. The method of claim 2, wherein When the radio network controller finds that the cells in the current active set have changed, it judges whether the combined number of adjacent cells of the cells in the active set exceeds the trigger threshold for deleting adjacent cells, and if so, sends a trigger message for deleting adjacent cells to the network management platform. 4. The method of claim 2, wherein, The parameters of the self-optimization of the neighbor list include a neighbor list update sample number threshold and a neighbor delete threshold; The network management platform judges whether to delete the neighbor cell according to the parameters of the neighbor cell list self-optimization, and if so, deletes the target neighbor cell to be deleted from the neighbor cell list of the current active set cell, specifically refers to: If the network management platform judges that the sum of the number of handovers triggered by the neighboring cells of the currently active concentrated cell is greater than the threshold for updating the number of samples of the neighboring cell list, and the number of handovers triggered by the target neighboring cell to be deleted is less than the threshold for deleting the adjacent cell, then the The target neighbor cell to be deleted is deleted from the neighbor cell list of the current active set cell. 5. The method of claim 4, wherein, If the network management platform judges that the sum of the number of handovers triggered by the adjacent cells of the currently activated cell is greater than the threshold for updating the sample number of adjacent cell lists, and the number of handovers triggered by the target adjacent cell to be deleted is greater than or equal to the threshold for deleting adjacent cells, then The network management platform alerts that the current cell is in a strong interference area, and network coverage optimization is required. 6. The method of claim 2, wherein, When the radio network controller finds that a cell out of the neighbor list is a potential handover target cell through detection set measurement or periodic detection of neighbor cells, it sends a trigger message for adding a neighbor cell to the network management platform, and through adding The trigger message carries the identification information of the handover target cell, and notifies the network management platform of the potential handover target cell. 7. The method of claim 2, wherein, The parameters of the self-optimization of the neighbor list include a trigger threshold for neighbor addition; The network management platform judges whether to perform the operation of adding a neighbor according to the parameters of the self-optimization of the neighbor list, and if so, adds the potential handover target cell to the neighbor list of the currently active set cell, specifically refers to: If the network management platform judges that the number of the union of adjacent cells of the cells in the current active set is less than the trigger threshold for adding adjacent cells, the potential handover target cell is added to the list of adjacent cells of the cells in the current active set. 8. The method of claim 7, wherein, If the network management platform judges that the number of adjacent cell unions of the currently activated cells is greater than or equal to the trigger threshold for adding adjacent cells, the network management platform will give an alarm, and the current cell is in a strong interference area, and network coverage optimization is required. 9. A system for self-optimizing the neighbor list of a wireless communication network, comprising a wireless network controller and a network management platform, characterized in that, The wireless network controller is used to send a message triggering the self-optimization of the neighbor list to the network management platform; The network management platform is used to judge whether to perform self-optimization of the neighbor list according to the parameters of the neighbor list self-optimization, and if so, delete or add neighbor cells to the neighbor list according to the judgment result. 10. The system of claim 9, wherein: The radio network controller is further configured to send a trigger message for deleting adjacent cells to the network management platform; and, the radio network controller is further configured to send a trigger message for adding adjacent cells to the network management platform to inform the potential handover target cell network management platform; The network management platform is further configured to select, after receiving the neighbor cell deletion trigger message, the neighbor cell with the least number of triggered handovers as the target neighbor cell to be deleted, and judge whether to delete the neighbor cell according to the parameters of the self-optimization of the neighbor cell list Operation, if yes, delete the target neighbor cell to be deleted from the neighbor cell list of the current active set cell; and, the network management platform is further configured to, according to the The list is self-optimized to determine whether to add neighbor cells, and if so, add the potential handover target cell to the neighbor list of cells in the current active set.

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