WO2013078841A1

WO2013078841A1 - Mobility load balancing method and system

Info

Publication number: WO2013078841A1
Application number: PCT/CN2012/076095
Authority: WO
Inventors: 韩小琴
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-12-02
Filing date: 2012-05-25
Publication date: 2013-06-06
Also published as: CN103139839A

Abstract

Provided are a mobility load balancing method and system, the method comprising: acquiring the load coefficient of a serving cell controlled by a base station and the load coefficients of all the neighboring cells of the serving cell; judging whether the load coefficient of the serving cell is greater than the load coefficients of all the neighboring cells; if the load coefficient of the serving cell is greater than the load coefficients of all the neighboring cells, then judging whether to conduct load balancing for the serving cell according to the load coefficient of the serving cell and a load coefficient average value, the load coefficient average value being the average value of the load coefficient of the serving cell and the load coefficients of all the neighboring cells of the serving cell; if it is judged that load balancing needs to be conducted for the serving cell, then conducting cell handoff on a part of the terminals in the serving cell. The present invention solves the problem of higher network operation and maintenance cost in the relevant art due to difficult load management and low efficiency, thus reducing load management difficulty, improving the load management efficiency of the system, and reducing network operation and maintenance cost.

Description

TECHNICAL FIELD The present invention relates to the field of wireless communications, and in particular to a method and system for mobile load balancing. In the case that the resources in the LTE (Long-Term Evolution) cell are limited, as the number of users and the number of services increase, the load of the cell increases gradually. However, the increase of the cell load affects the user. The performance of the indicator of the service, if the load of the cell cannot be effectively reduced in time, when the load of the system increases to the warning line of the system, the performance of the system will be drastically deteriorated or even cause the system to collapse. The situation is mainly as follows: Key Performance Indication (KPI) alarms such as rate, handover success rate, downlink power load alarm, neighboring area interference alarm, etc. The role of load management is to monitor the load of the current serving cell in real time and obtain the load of the neighboring cell of the current serving cell. The load sharing mechanism prevents the load of individual cells from being too high. At the same time, if sudden load surge occurs, load management The algorithm can reduce the cell load in a timely and rapid manner by means of active demolition and the like to maintain system stability. However, the traditional load management method is to monitor network performance indicators in real time, and manually analyze network performance indicators to determine whether to modify load-related parameters to achieve load balancing. However, this manual implementation of load management methods requires Manual analysis of network performance indicators results in more difficult load management and lower efficiency. At the same time, network operation and maintenance costs are higher. SUMMARY OF THE INVENTION The present invention provides a method and system for mobile load balancing to solve at least the problem that the load management method in the related art is difficult to implement, and the efficiency is low, resulting in high network operation and maintenance cost. According to an aspect of the present invention, a method for mobile load balancing is provided, which includes: acquiring a load coefficient of a serving cell managed by a base station and a load coefficient of all neighboring cells of the serving cell; determining whether a load factor of the serving cell is greater than all If the load factor of the serving cell is greater than the load factor of all neighboring cells, it is determined whether the load cell is load balanced according to the load factor of the serving cell and the average value of the load factor, wherein the average load factor is The load factor of the serving cell and the load system of all neighboring areas of the serving cell The mean value of the number; if it is determined that the serving cell is load balanced, the cell handover is performed on some terminals in the serving cell. Preferably, the step of determining whether to load balance the serving cell according to the load factor of the serving cell and the average value of the load factor comprises: calculating a square of a difference between the load coefficient of the serving cell and the average value of the load factor; determining the load factor of the serving cell and Whether the square of the difference of the average value of the load factor is greater than a preset threshold. If it is greater, it determines that the serving cell is load balanced. Preferably, the step of performing cell handover on a part of the serving cell includes: the base station sending a parameter modification request message to the network management, where the parameter modification request message carries the updated cell handover parameter of the serving cell and the parameter modification mode indication The cell handover parameter of the updated serving cell is used for determining a cell handover by the terminal in the serving cell; the base station receives the synchronization message returned by the network management device in response to the parameter modification request message; and the base station according to the updated handover parameter of the serving cell A part of the serving cell performs a cell handover decision. When the result of the decision indicates that some of the terminals in the serving cell need to perform cell handover, the cell handover is performed on some of the terminals. Preferably, the step of receiving, by the base station, the synchronization message returned by the network management device in response to the parameter modification request message comprises: after receiving the parameter modification request message, the network management device determines, according to the indication identifier of the parameter modification mode, the adopted parameter modification mode; When the mode is the controlled mode, the network management device waits to receive the input command information. When the received command information indicates that the parameter is modified, the network management system modifies the locally stored cell handover parameter of the serving cell to the updated service in the parameter modification request message. The cell handover parameter of the cell; when the indication indicator indicates that the parameter modification mode is the free mode, the network management unit modifies the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message; After the cell handover parameter of the locally stored serving cell is modified to the cell handover parameter of the updated serving cell in the parameter modification request message, the network management carries the modification result in the synchronization message and sends the result to the base station. Preferably, the step of performing cell handover on a part of the serving cell includes: the base station sending a parameter modification request message to the network management, where the parameter modification request message carries the updated cell handover parameter of the serving cell and the parameter modification mode indication An identifier, where the cell handover parameter of the updated serving cell is used for determining a cell handover by a part of the terminal in the serving cell; after the base station receives the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, the base station changes the parameter The acknowledgment message indicates that the cell handover parameter of the locally stored serving cell is changed to the cell handover parameter of the updated serving cell in the parameter modification request message when the parameter modification is performed; or the base station modifies the cell handover parameter of the locally stored serving cell to a cell handover parameter of the updated serving cell in the parameter modification request message; the base station performs a cell handover decision on a part of the serving cell according to the updated handover parameter of the serving cell; and the decision result indicates that the serving cell needs to be When the terminal portion of the cell handover, the base station performs a cell handover to a terminal portion. Preferably, the step of receiving, by the base station, the parameter modification confirmation message returned by the network management device in response to the parameter modification request message comprises: after receiving the parameter modification request message, the network management device determines the parameter modification mode adopted according to the indication identifier of the parameter modification mode; When the parameter modification mode is the controlled mode, the network management device waits to receive the input instruction information, and when the received instruction information indicates that the parameter modification is performed, the network management device returns a parameter modification confirmation message for performing parameter modification to the base station; When the instruction information indicates that the parameter modification is canceled, the network management device returns a parameter modification confirmation message for canceling the parameter modification to the base station. Preferably, the step of the base station performing cell handover on a part of the serving cell includes: determining, by the base station, whether the neighboring cell of the serving cell is a cell under the control of the base station; if the neighboring cell is not the cell under the control of the base station, the base station notifying the neighboring cell The peer base station modifies the cell handover parameter in the neighboring cell with respect to the serving cell; the peer base station checks whether the neighbor cell list of the neighboring cell has a serving cell; if there is a serving cell, the peer base station notifies the network management of the neighboring cell The cell handover parameter of the serving cell is modified, or the peer base station modifies the cell handover parameter of the neighbor cell with respect to the serving cell; if the neighbor cell is the cell under the jurisdiction of the base station, the base station notifies the network management to perform cell handover to the neighbor cell. The parameter is modified, or the base station performs cell modification parameters on the neighboring cell. Preferably, after the cell handover is performed on some terminals in the serving cell, the mobile load balancing method further includes: determining whether the square of the difference between the load factor of the serving cell and the average value of the load factor is less than or equal to each other on a continuous predetermined period Presetting the threshold; if the square is less than or equal to the preset threshold for a predetermined period of time, determining that the load balancing is successful; if the squared unevenness is less than or equal to the preset threshold for consecutive predetermined periods, then switching the cell of the serving cell The parameter is modified to the cell handover parameter of the serving cell before the update. According to another aspect of the present invention, a mobile load balancing system is provided, including: a base station, where the base station includes: an acquiring unit, configured to acquire a load coefficient of a serving cell managed by the base station, and all neighboring cells of the serving cell The first determining unit is configured to determine whether the load factor of the serving cell is greater than the load coefficient of all neighboring cells; the second determining unit is configured to determine that the load factor of the serving cell is greater than the load coefficient of all neighboring cells When, according to the load factor of the serving cell and the average value of the load factor, it is determined whether load balancing is performed on the serving cell, wherein the load factor average is the average of the load factor of the serving cell and the load coefficient of all neighboring cells of the serving cell; And being configured to perform cell handover on some terminals in the serving cell when determining that load balancing is performed on the serving cell. Preferably, the second determining unit comprises: a calculating module, configured to calculate a square of a difference between a load factor of the serving cell and an average value of the load factor; the first determining module is configured to determine a load factor of the serving cell and an average value of the load factor Whether the square of the difference is greater than a preset threshold, and if it is greater, it is determined that load balancing is performed on the serving cell. Preferably, the load balancing unit includes: a first sending module, configured to send a parameter modification request message to the network management, where the parameter modification request message carries the updated cell handover parameter of the serving cell and the indication identifier of the parameter modification mode, and updates The cell handover parameter of the serving cell is used for the cell handover decision of the part of the serving cell; the receiving module is configured to receive the synchronization message returned by the network management device in response to the parameter modification request message; the first decision module is set to be updated according to the The handover parameter of the serving cell performs a cell handover decision on some terminals in the serving cell; the first load balancing module is configured to perform cell handover on some terminals when the decision result indicates that some terminals in the serving cell need to perform cell handover. . Preferably, the mobile load balancing system further includes: a network management system, wherein the network management system includes: a receiving unit configured to receive a parameter modification request message; and a third determining unit configured to modify the mode according to the parameter after receiving the parameter modification request message The indication identifier determines the parameter modification mode adopted; the processing unit is configured to wait for receiving the input instruction information when the indication identifier indicates that the parameter modification mode is the controlled mode, and when the received instruction information indicates that the parameter modification is performed, the local The cell handover parameter of the stored serving cell is modified to the cell handover parameter of the updated serving cell in the parameter modification request message; when the indication identifier indicates that the parameter modification mode is the free mode, the cell handover parameter of the locally stored serving cell is modified to a cell handover parameter of the updated serving cell in the parameter modification request message; the first sending unit is configured to modify the cell handover parameter of the locally stored serving cell to the cell of the updated serving cell in the parameter modification request message Switch After a few, in response to a parameter modification request message to the base station is carried in the modification results in the synchronization message. Preferably, the load balancing unit is configured to: send a parameter modification request message to the network management, where the parameter modification request message carries the cell handover parameter of the updated serving cell and the indication identifier of the parameter modification mode, where The cell handover parameter of the updated serving cell is used for determining a cell handover by a part of the serving cell; the first processing module is configured to: after the base station receives the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, The parameter modification confirmation message indicates that the cell handover parameter of the serving cell stored locally by the base station is modified to the cell handover parameter of the updated serving cell in the parameter modification request message when the parameter modification is performed; or the cell handover of the serving cell locally stored by the base station is performed. The parameter is modified to the cell handover parameter of the updated serving cell in the parameter modification request message; the second determining module is configured to perform a cell handover decision on a part of the serving cell according to the updated handover parameter of the serving cell; negative Equalization module, arranged, in the judgment result indicates the need for some terminals serving cell to perform cell handover of the terminal part of a cell switching. Preferably, the network management system further includes: a second receiving unit, configured to determine, according to the indication identifier of the parameter modification mode, the parameter modification mode adopted after receiving the parameter modification request message; and the second sending unit is configured to indicate the parameter modification mode in the indication identifier When in the controlled mode, waiting for receiving the input instruction information, when the received instruction information indicates to perform parameter modification, returning a parameter modification confirmation message for indicating parameter modification to the base station; When the received instruction information indicates that the parameter modification is canceled, the parameter modification confirmation message for instructing cancellation of the parameter modification is returned to the base station. Preferably, the load balancing unit includes: a third determining module, configured to determine whether the neighboring cell of the serving cell is a cell under the control of the base station; and the second processing module is configured to notify the jurisdiction if the neighboring cell is not a cell under the jurisdiction of the base station The neighboring base station of the neighboring cell modifies the cell handover parameter in the neighboring cell with respect to the serving cell; if the neighboring cell is the cell under the jurisdiction of the base station, the network management unit is notified to modify the cell handover parameter of the neighboring cell, or directly to the neighboring cell Modify the cell handover parameters. Preferably, the base station further includes: a fourth determining unit, configured to determine whether the square of the difference between the load factor of the serving cell and the average value of the load factor on the continuous predetermined period is less than or equal to a preset threshold, if the order is continuous If the square of the period is less than or equal to the preset threshold, the load balancing is determined to be successful; wherein the load balancing unit is further configured to: when it is determined that the squared unevenness is less than or equal to the preset threshold in consecutive predetermined periods, the cell of the serving cell is used. The handover parameter is modified to the cell handover parameter of the serving cell before the update. In the present invention, when it is determined that the load factor of the serving cell is greater than the load factor of all neighboring cells, that is, when the serving cell load is maximum, the load balancing of the serving cell is determined according to the load factor of the serving cell and the average value of the load factor. The load factor average is the average of the load factor of the serving cell and the load factor of all neighboring cells of the serving cell, which solves the difficulty in implementing the load management method in the related art, and the efficiency is low, resulting in a relatively low network operation and maintenance cost. The high problem reduces the difficulty of load management, improves the efficiency of the system for load management, and reduces the network operation and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a preferred structural diagram of a system for mobile load balancing according to an embodiment of the present invention; FIG. 2 is another preferred structural diagram of a system for mobile load balancing according to an embodiment of the present invention; 3 is a preferred flowchart of a method for mobile load balancing according to an embodiment of the present invention; FIG. 4 is a preferred flowchart of a base station performing load balancing determination according to an embodiment of the present invention; A preferred flowchart of the network management of the embodiment for performing handover parameter modification; 6 is a preferred flowchart of a handover parameter modification performed by a base station according to an embodiment of the present invention; FIG. 7 is a preferred flowchart of a network management system for performing load balancing effect evaluation according to an embodiment of the present invention; A preferred flowchart of the load balancing effect evaluation performed by the base station of the embodiment of the invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. In the following embodiments, the communication may be implemented by a wireless connection or a wired connection or a combination of both, which is not limited by the present invention. Embodiment 1 FIG. 1 is a schematic structural diagram of a mobile load balancing system according to an embodiment of the present invention. As shown in FIG. 1, the mobile load balancing system includes: a base station 102, where the base station 102 includes: an acquiring unit 1021, configured to obtain a load factor of a serving cell under the control of the base station and a load coefficient of all neighboring cells of the serving cell. The first determining unit 1022 is configured to communicate with the acquiring unit 1021, and set whether to determine whether the load coefficient of the serving cell is greater than all neighbors. The load factor of the zone; the second determining unit 1023, in communication with the first determining unit 1022, is configured to determine the load factor and the load factor average of the serving cell when determining that the load factor of the serving cell is greater than the load factor of all neighboring cells Determining whether load balancing is performed on the serving cell, where the load factor average is the average of the load factor of the serving cell and the load factor of all neighboring cells of the serving cell; the load balancing unit 1024 is in communication with the second determining unit 1023, and is set to When it is determined that the serving cell is load balanced, the part in the serving cell Terminal performs cell handover. In the above preferred embodiment, when it is determined that the load factor of the serving cell is greater than the load factor of all neighboring cells, that is, when the serving cell load is maximum, the load cell is loaded according to the load factor and the load factor average of the serving cell. Equilibrium, wherein the load factor average is the average of the load factor of the serving cell and the load factor of all neighboring cells of the serving cell, which solves the difficulty in implementing the load management method in the related art, and the efficiency is low, resulting in network operation and maintenance. The problem of higher cost reduces the difficulty of load management, improves the efficiency of the system for load management, and reduces the network operation and maintenance cost. Preferably, the foregoing embodiment may be implemented based on an LTE network, and proposes a concept of a SON (Self Organization Network), that is, network parameters may be automatically configured and adjusted to reduce the cost of network operation and maintenance, and load balancing is also SON. One of the functions is to automatically monitor network performance indicators and analyze performance indicators in real time, and automatically complete load balancing. In order to improve the accuracy of the embodiment, a preferred second determining unit 1023 is provided in the preferred embodiment. The second determining unit 1023 includes: a calculating module 10231, configured to calculate a load factor and a load factor of the serving cell. The square of the difference between the average values; the first determining module 10232, in communication with the calculating module 10231, is configured to determine whether the square of the difference between the load factor of the serving cell and the average value of the load factor is greater than a preset threshold, and if greater, determine Load balancing the serving cell. In this embodiment, when it is determined that the square of the difference between the load factor of the serving cell and the average value of the load factor is greater than a preset threshold, it is determined that load balancing is performed on the serving cell, which improves the accuracy of the embodiment. In order to improve the accuracy of the embodiment, a preferred load balancing unit 1024 is provided in the preferred embodiment. The load balancing unit 1024 includes: a first sending module 10241, configured to send a parameter modification request message to the network management, where The parameter modification request message carries the cell handover parameter of the updated serving cell and the indication identifier of the parameter modification mode, and the cell handover parameter of the updated serving cell is used for determining the cell handover by some terminals in the serving cell; 10242, in communication with the first sending module 10241, configured to receive a synchronization message returned by the network management device in response to the parameter modification request message. The determining module 10243 is configured to communicate with the receiving module 1042, and is configured to be in the serving cell according to the updated handover parameter of the serving cell. The part of the terminal performs the cell handover decision. The load balancing module 10244 communicates with the decision module 10243, and is configured to perform cell handover on some of the terminals when the decision result indicates that the cell handover needs to be performed on some terminals in the serving cell. In the preferred embodiment, after receiving the synchronization message returned by the network management device in response to the parameter modification request message, the cell handover is performed on some terminals in the serving cell according to the updated cell handover parameter of the serving cell, thereby improving the accuracy of the embodiment. Sex. In order to improve the flexibility of use of the embodiment, the mobile load balancing system is improved in the preferred embodiment. As shown in FIG. 2, the mobile load balancing system includes: a network management unit 104, wherein the network management unit 104 includes: a receiving unit The first determining unit 1042 is configured to receive the parameter modification request message, and the third determining unit 1042 is configured to communicate with the receiving unit 1041, and set to determine the adopted parameter modification mode according to the indication identifier of the parameter modification mode after receiving the parameter modification request message; 1043, in communication with the third determining unit 1042, configured to wait for receiving the input instruction information when the indication identifier indicates that the parameter modification mode is the controlled mode, and to store the locally stored serving cell when the received instruction information indicates that the parameter modification is performed. The cell handover parameter is modified to the cell handover parameter of the updated serving cell in the parameter modification request message. When the indication identifier indicates that the parameter modification mode is the free mode, the cell handover parameter of the locally stored serving cell is modified to a parameter modification request message. Updated service community a cell handover parameter; the first sending unit 1044, in communication with the processing unit 1043, is configured to: after successfully modifying the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message, The modification result is carried in the synchronization message and sent to the base station in response to the parameter modification request message. In the preferred embodiment, after receiving the parameter modification request message, the network management device changes the cell handover parameter of the locally stored serving cell to the updated service in the parameter modification request message in different parameter modification modes. The cell handover parameter of the cell can be manually implemented in the process of automatically changing the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message, thereby improving the present The flexibility of use of the embodiments. In order to improve the use flexibility of the embodiment, the load balancing unit 1024 is improved in the preferred embodiment. The load balancing unit 1024 includes: a second sending module 10245, configured to send a parameter modification request message to the network management, where The parameter modification request message carries the cell handover parameter of the updated serving cell and the indication identifier of the parameter modification mode, where the cell handover parameter of the updated serving cell is used for determining a cell handover for some terminals in the serving cell; The first processing module 10246 is configured to communicate with the second sending module 10245, and is configured to: after the base station receives the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, locally storing the base station when the parameter modification confirmation message indicates that the parameter modification is performed. The cell handover parameter of the serving cell is modified to the cell handover parameter of the updated serving cell in the parameter modification request message; or the cell handover parameter of the serving cell locally stored by the base station is modified to the updated serving cell in the parameter modification request message. Community cut The second decision module 10247 is configured to communicate with the first processing module 10246, and is configured to perform a cell handover decision on a part of the serving cells according to the updated handover parameter of the serving cell; the second load balancing module 10248, and the second The decision module 10247 communicates, and is configured to perform cell handover on some of the terminals when the decision result indicates that it is necessary to perform cell handover on some terminals in the serving cell. In the preferred embodiment, after receiving the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, the base station changes the cell handover parameter of the locally stored serving cell to the parameter modification request message in the different parameter modification mode. The cell handover parameter of the updated serving cell may be manually participated in the process of automatically changing the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message, thereby The use flexibility of this embodiment is improved. In order to improve the flexibility of use of the embodiment, the network management unit 104 is improved in the preferred embodiment. The network management unit 104 includes: a second receiving unit 1045, configured to receive an indication of the parameter modification mode after receiving the parameter modification request message. Determining the adopted parameter modification mode; the second sending unit 1046 is in communication with the second receiving unit 1045, and is configured to wait for receiving the input instruction information when the indication identifier indicates that the parameter modification mode is the controlled mode, and receiving the instruction information When the parameter modification is performed, the parameter modification confirmation message for indicating the parameter modification is returned to the base station; when the received instruction information indicates that the parameter modification is canceled, the parameter modification confirmation message for instructing cancellation of the parameter modification is returned to the Base station. In the preferred embodiment, after receiving the parameter modification request message, in a different parameter modification mode, a parameter modification confirmation message for indicating parameter modification is returned to the base station, thereby improving the flexibility of use of the embodiment. In order to improve the flexibility of use of the embodiment, the load balancing unit 1024 is improved in the preferred embodiment. The load balancing unit 1024 includes: a third determining module 10249, configured to determine a neighboring cell of the serving cell. Whether it is a cell under the jurisdiction of the base station; the second processing module 102410 communicates with the third determining module 10249, and is configured to notify the opposite base station of the neighboring cell to the neighboring cell if the neighboring cell is not the cell under the jurisdiction of the base station. The cell handover parameter of the serving cell is modified. If the neighboring cell is a cell under the control of the base station, the network management unit is notified to modify the cell handover parameter of the neighboring cell, or directly modify the cell handover parameter of the neighboring cell. In the preferred embodiment, when the neighboring cell of the serving cell is the intra-station neighboring cell or the inter-station neighboring cell, the cell switching parameter of the neighboring cell of the serving cell can be modified, thereby improving the flexibility of use of the embodiment. In order to improve the usability of the embodiment, the base station 102 is improved in the preferred embodiment. The base station 102 includes: a fourth determining unit 1025, configured to determine a load factor and a load of the serving cell on a continuous predetermined period. Whether the square of the difference of the mean values of the coefficients is less than or equal to a preset threshold. If the squares are less than or equal to the preset threshold for a predetermined period of time, the load balancing is determined to be successful; wherein the load balancing unit is further configured to determine that When the squared unevenness in the predetermined predetermined period is less than or equal to the preset threshold, the cell handover parameter of the serving cell is modified to the cell handover parameter of the serving cell before the update. In this embodiment, when the load balancing is unsuccessful, the cell handover parameter of the serving cell may be modified to the cell handover parameter of the serving cell before the update, thereby improving the flexibility of use of the present invention. In the preferred embodiment, after the load balancing is completed, the effect of the load balancing is evaluated. When the load balancing effect is not good, the cell handover parameter of the serving cell may be modified to the cell handover parameter of the serving cell before the update. Thereby, the accuracy of the embodiment is improved, and the usability of the embodiment is enhanced. Embodiment 2 On the basis of FIG. 1-2, an embodiment of the present invention provides a method for mobile load balancing. As shown in FIG. 3, the mobile load balancing method includes:

S302: Obtain a load factor of a serving cell under the jurisdiction of the base station and a load coefficient of all neighboring cells of the serving cell;

S304: Determine whether a load factor of the serving cell is greater than a load coefficient of all neighboring cells;

S306: If the load factor of the serving cell is greater than the load coefficient of all neighboring cells, determine whether to load balance the serving cell according to the load factor of the serving cell and the average value of the load factor, where the average value of the load factor is the load factor of the serving cell. The average of the load factors of all neighboring areas of the serving cell;

S308: If it is determined that load balancing is performed on the serving cell, perform cell handover on some terminals in the serving cell. In the above embodiment, when it is determined that the load factor of the serving cell is greater than the load factor of all neighboring cells, that is, when the serving cell load is maximum, the load cell equalization is determined according to the load factor and the load factor average of the serving cell. The average value of the load factor is the average of the load factor of the serving cell and the load factor of all neighboring cells of the serving cell, which solves the difficulty in implementing the load management method in the related art, and the efficiency is low, resulting in network operation and maintenance cost. The higher the problem, the more difficult the load management is, the efficiency of the system for load management is improved, and the network operation and maintenance cost is reduced. Preferably, the foregoing embodiment may be implemented based on an LTE network, and proposes a concept of SON, that is, network parameters may be automatically configured and adjusted to reduce the cost of network operation and maintenance, and load balancing is also one of SON functions, that is, automatic real-time operation. Monitor network performance metrics and analyze performance metrics and automate load balancing. In order to improve the accuracy of the embodiment, in the preferred embodiment, a preferred method for determining whether to perform mobile load balancing on a serving cell according to a load factor and a load factor average value of a serving cell is provided. The method includes: The square of the difference between the load factor of the cell and the average value of the load factor; determining whether the square of the difference between the load factor of the serving cell and the average value of the load factor is greater than a preset threshold, and if greater than, determining load balancing of the serving cell. In the preferred embodiment, when it is determined whether the square of the difference between the load factor of the serving cell and the average value of the load factor is greater than a preset threshold, it is determined that load balancing is performed on the serving cell, which improves the accuracy of the embodiment. In order to improve the accuracy of the embodiment, in the preferred embodiment, a method for performing cell handover on a part of a serving cell is provided. The method for performing cell handover in a part of the serving cell includes: Sending a parameter modification request message, where the parameter modification request message carries the cell handover parameter of the updated serving cell and the indication identifier of the parameter modification mode, where the cell handover parameter of the updated serving cell is used for the part in the serving cell The terminal performs a cell handover decision; the base station receives the synchronization message returned by the network management device in response to the parameter modification request message; the base station performs a cell handover decision on some of the terminals in the serving cell according to the updated handover parameter of the serving cell; When some terminals in the serving cell perform cell handover, the cell handover is performed on some of the terminals. In the preferred embodiment, after receiving the synchronization message returned by the network management device in response to the parameter modification request message, the cell handover is performed on some terminals in the serving cell according to the updated cell handover parameter of the serving cell, thereby improving the accuracy of the embodiment. Sex. In the preferred embodiment, the mobile load balancing method is improved. The mobile load balancing method includes: after the network management receives the parameter modification request message, according to the indication of the parameter modification mode. Determining the parameter modification mode adopted; when the indication identifier indicates that the parameter modification mode is the controlled mode, the network management device waits to receive the input instruction information, and when the received instruction information indicates that the parameter modification is performed, the network management unit stores the locally stored serving cell The handover parameter is modified to the cell handover parameter of the updated serving cell in the parameter modification request message; when the indication identifier indicates that the parameter modification mode is the free mode, the network management will locally save The cell handover parameter of the stored serving cell is modified to the cell handover parameter of the updated serving cell in the parameter modification request message; the cell handover parameter of the locally stored serving cell is successfully modified to the updated service in the parameter modification request message. After the cell handover parameter of the cell, the network management carries the modification result in the synchronization message and sends the result to the base station. In the preferred embodiment, after receiving the parameter modification request message, the network management system changes the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message in different parameter modification mode. The manual participation operation may be implemented in the process of automatically completing the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message, thereby improving the use flexibility of the embodiment. In the preferred embodiment, the method for performing cell handover on some terminals in the serving cell is improved in the preferred embodiment. The method for performing cell handover on some terminals in the serving cell includes: Sending a parameter modification request message, where the parameter modification request message carries the cell handover parameter of the updated serving cell and the indication identifier of the parameter modification mode, where the cell handover parameter of the updated serving cell is used for the part in the serving cell The terminal performs the cell handover decision. After the base station receives the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, the base station modifies the locally stored cell handover parameter of the serving cell to the parameter when the parameter modification confirmation message indicates that the parameter modification is performed. Modifying the cell handover parameter of the updated serving cell in the request message; or, the base station modifies the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message; Serving cell handover parameters of the serving cell of the terminal portion of a cell switching decision performed; when the judgment result indicates the need for some terminals serving cell to perform cell handover, the base station performs a cell handover to a terminal portion. In a preferred embodiment of the present invention, after receiving the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, the base station modifies the cell handover parameter of the locally stored serving cell into a parameter modification request message in different parameter modification modes. The cell handover parameter of the updated serving cell may be manually participated in the process of automatically changing the cell handover parameter of the locally stored serving cell to the cell handover parameter of the updated serving cell in the parameter modification request message, Thereby the use flexibility of the embodiment is improved. In the preferred embodiment, the method for receiving, by the base station, the parameter modification confirmation message returned by the network management device in response to the parameter modification request message is improved, and the base station receives the network management system response to the parameter modification request message. The returned parameter modification confirmation message includes: after receiving the parameter modification request message, the network management device determines the parameter modification mode adopted according to the indication identifier of the parameter modification mode; when the indication identifier indicates that the parameter modification mode is the controlled mode, the network management waits for receiving The input instruction information, when the received instruction information indicates that the parameter is modified, the network management device returns a parameter modification confirmation message for indicating parameter modification to the base station; when the received instruction information indicates that the parameter modification is canceled, the network management system uses The parameter modification confirmation message indicating that the parameter modification is canceled is returned to the base station. In a preferred embodiment of the present invention, a parameter modification request message is received Then, in the parameter modification mode, the parameter modification confirmation message for indicating the parameter modification is returned to the base station, thereby improving the use flexibility of the embodiment. In the preferred embodiment, the method for performing cell handover on a part of the serving cell in the serving cell is improved in the preferred embodiment. The method for performing cell switching on a part of the serving cell in the serving cell includes: The base station determines whether the neighboring cell of the serving cell is a cell under the control of the base station; if the neighboring cell is not the cell under the jurisdiction of the base station, the base station notifies the opposite base station of the neighboring cell to modify the cell handover parameter in the neighboring cell relative to the serving cell. The peer base station checks whether the neighboring cell list of the neighboring cell has a serving cell; if there is a serving cell, the peer base station notifies the network management to modify the cell handover parameter in the neighboring cell relative to the serving cell, or the peer base station pairs the neighboring cell The cell handover parameter is modified with respect to the serving cell; if the neighboring cell is the cell under the jurisdiction of the base station, the base station notifies the network management to modify the cell handover parameter of the neighboring cell, or the base station performs the cell handover parameter modification to the neighboring cell. In order to improve the usability of the embodiment, the mobile load balancing method is improved in the preferred embodiment. The mobile load balancing method further includes: determining a load factor and a load factor of the serving cell on a continuous predetermined period. Whether the square of the difference of the average values is less than or equal to the preset threshold; if the squares are less than or equal to the preset threshold for a predetermined period of consecutive periods, it is judged that the load balancing is successful; if the squared unevenness is less than or equal to the continuous predetermined period The preset threshold is used to modify the cell handover parameter of the serving cell to the cell handover parameter of the serving cell before the update. In the preferred embodiment, when the load balancing is unsuccessful, the cell handover parameter of the serving cell may be modified to the cell handover parameter of the serving cell before the update, thereby improving the flexibility of use of the embodiment. In this embodiment, after the load balancing is completed, the effect of completing the load balancing is evaluated. When the effect of the load balancing is not good, the cell handover parameter of the serving cell may be modified to the cell handover parameter of the serving cell before the update, thereby The accuracy of the embodiment is improved, and the usability of the embodiment is enhanced. Embodiment 3 The above respective preferred embodiments will be described in detail below with reference to the accompanying drawings. A preferred embodiment of the present invention provides a method for performing load balancing determination by a base station. As shown in FIG. 4, the method for performing load balancing determination by the base station includes:

S402: The load balancing period arrives, and the base station acquires load coefficients of all neighboring cells of the serving cell and the serving cell. Preferably, the method for the base station to calculate the load coefficients of the neighboring cells of the serving cell and the serving cell is:

LB D = \ 3 (DLT ₊ lf ^LT - ^DmG) ₊ DLG > x DlBandwidth, where the total downlink resource utilization (Down Link Total, referred to as DLT) is the total physical resource block (Physical Resource Block, PRB) usage rate of the downlink, and the Down Link Guaranteed Bit Rate (DLG) is the guaranteed bit rate (Guaranteed). Bit Rate (referred to as GBR) The PRB utilization rate of the service in the downlink, and the Down Guaranteed Bit Rate (hereinafter referred to as DLNG) is the Non Guaranteed Bit Rate (NGBR) service. The PRB utilization rate of the downlink is occupied, and the DLBandwidth is the downlink system bandwidth of the cell. When the cell load balancing coefficient is larger, it indicates that the more resources remaining in the system, the lower the cell load, and the calculation method of the uplink load coefficient of the cell is the same as the downlink load factor of the above cell. The calculation method is not repeated here.

S404: The base station determines whether the mobile load balancing switch is turned on when the load balancing period arrives, that is, whether to start the mobile load balancing, if yes, proceed to step S406, if not, proceed to step S402 to wait for the next load balancing period;

S406: The load factor reported by the base station to the serving cell and all neighboring cells of the serving cell is displayed to the network management.

S408: The base station determines whether the network management is performing load balancing on the serving cell. If yes, the process goes to FIG. 7. If no, the process goes to step S410. S410: The base station calculates between the neighboring cells of the serving cell and the serving cell. The difference between the load factors, find a pair of cells with the largest difference in load factors;

S412: The base station calculates an average value of load coefficients of all neighboring cells of the serving cell and the serving cell, and then determines whether the serving cell is the cell with the highest load, and if yes, proceeds to step S414, and if not, proceeds to step S402 to wait for a load balancing period; S414: The base station calculates whether the square of the difference between the load factor of the serving cell and the average value of the load factor is greater than a preset threshold, where the average value of the load factor refers to the serving cell and all neighboring cells of the serving cell The average of the load factors, if yes, proceed to step S416, if not, proceed to step S402 to wait for the next load balancing period;

S416: The base station puts the serving cell with a load balancing flag, and reports the modified value of the serving cell, the neighboring cell of the serving cell, the handover parameter to be modified, and the handover parameter to be modified to the network management, and carries the operation mode as controlled or free. (also known as uncontrolled). In a preferred embodiment of the present invention, a method for modifying a handover parameter of a network management system is provided. As shown in FIG. 5, the method for modifying a handover parameter of the network management system includes:

S502: After receiving the message reported by the base station, the network management device reports the message to the SON monitoring. S504: determining whether the mode is controlled, and if so, proceeding to step S506, if not, proceeding to step S508;

S506: determining whether the user has confirmed, if the user confirms, proceeding to step S508, if the user cancels, the process ends;

S508: The network management modifies the handover parameter of the serving cell (the individual cell offset), and the modified result is sent to the network element in the same manner, and the result is reported to the SON monitoring;

S510: After receiving the parameter modification message, the base station re-provisions the CEU (Cell Edge UE, cell edge user) in the cell;

S512: The base station determines whether the neighboring cell of the serving cell is an intra-station neighboring cell, and if it is an intra-station neighboring cell, re-organizes the message reporting network management. If it is an inter-station neighboring cell, the base station is notified by the X2 port, and the peer base station determines the serving cell. Whether there is a neighboring area sent by the base station in the neighboring area, if it is, report it to the network management system; if not, it will not process it;

S514: After receiving the message reported by the base station, the network management system modifies the handover parameter of the neighboring cell of the serving cell, and after the modification succeeds, the message is sent to the base station, and the result is reported to the SON monitoring. In a preferred embodiment of the present invention, a method for performing handover parameter modification by a base station is provided. As shown in FIG. 6, the method for performing handover parameter modification by the base station includes:

S602: The base station reports a message.

S604: The base station determines whether it is in the controlled mode, if yes, proceed to step S606, if not, then go to step S610;

S606: The base station determines whether the network management device sends an acknowledgement message, and if yes, proceeds to step S608, and if not, the process ends;

S608: After receiving the network management confirmation message, the base station determines whether the user confirms the continuation. If the user confirms the continuation, the process goes to step S610. If the user cancels, the process ends.

S610: If the free mode, the base station modifies the handover parameter of the serving cell (the cell individual offset), and re-allocates the CEU in the serving cell, and reports the result to the network management system. If the mode is in the controlled mode, it determines whether the network management device delivers the continuation. If the continuation is performed, the base station modifies the handover parameter of the serving cell and re-provisions the CEU in the cell, and reports the result to the network management. S612: The base station determines whether the neighboring cell of the serving cell is an in-station neighboring cell, and if it is an in-station neighboring cell, directly modifies the switching parameter of the neighboring cell of the serving cell, and if it is the inter-station neighboring zone, notifies the peer base station to modify the service through the X2 port. The handover parameter of the neighboring cell of the cell is reported to the network management system. In a preferred embodiment of the present invention, a method for evaluating a load balancing effect of a preferred network management system is provided. As shown in FIG. 7, the method for evaluating a load balancing effect of the network management system includes:

S702: The base station determines whether the load balancing effect determination counter Tjudge is equal to the pre-configured value T, if not, proceeding to step S704, and if yes, proceeding to step S706;

S704: The base station adds 1 to the load balancing effect determination counter Tjudge, and then determines whether the square of the difference between the load factor and the load factor mean of the serving cell is less than a preset threshold, and if yes, the cell load balance recovery counter T_rec is incremented by 1, and the process goes to step S402.

S706: determining whether the load balancing effect is good, determining whether the cell load balancing recovery counter _{T_reC} is greater than T/2. If it is greater than, the current load balancing is completed, and the load balancing effect is good. If not greater than, the current load balancing effect is not Ok, and the organization evaluation report is reported to the network administrator;

S708: the network management receiving effect evaluation message; S710: the network management analysis effect evaluation message, if the load balancing effect is good, proceeding to step S712, if the load balancing effect is not good, then proceeding to step S714;

S712: clearing the equalization mark and the related counter and displaying the result on the SON monitoring;

S714: The network management system rolls back the switching parameters and sends the result to the network element, and then displays the result on the SON monitoring. In a preferred embodiment of the present invention, a method for performing load balancing effect evaluation by a preferred base station is provided. As shown in FIG. 8, the method for performing load balancing effect evaluation by the base station includes:

S802: The base station determines whether the load balancing effect determination counter Tjudge is equal to the pre-configured value T, if not, proceeding to step S804, and if yes, proceeding to step S806;

S804: The base station adds 1 to the load balancing effect determination counter Tjudge, and then determines whether the square of the difference between the load factor and the load factor mean of the serving cell is less than a preset threshold, and if yes, the cell load balance recovery counter T rec plus 1, go to step S402; S806: determining whether the load balancing effect is good, determining whether the cell load balancing recovery counter _{T_reC} is greater than T/2. If it is greater than, the current load balancing is completed, and the load balancing effect is good. If not greater than, the current load balancing effect is not Ok, and the organization evaluation report is reported to the network administrator;

S808: the network management receiving effect evaluation message; S810: the network management analysis effect evaluation message, if the load balancing effect is good, proceeding to step S812, if the load balancing effect is not good, then proceeding to step S814;

S812: Clear the equalization mark and the related counter and display the result on the SON monitor;

S814: The base station rolls back the handover parameter and reports the result to the network management.

S816: The network management synchronizes the corresponding switching parameters and displays the result on the SON monitoring. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

1. A method of mobile load balancing, comprising:

Obtaining a load factor of a serving cell under the jurisdiction of the base station and a load coefficient of all neighboring cells of the serving cell;

Determining whether the load factor of the serving cell is greater than the load coefficient of all neighboring cells; if the load factor of the serving cell is greater than the load factor of all neighboring cells, determining according to the load factor and the load factor average of the serving cell Whether the load balancing is performed on the serving cell, where the average value of the load factor is an average value of a load factor of the serving cell and a load coefficient of all neighboring cells of the serving cell;

If it is determined that load balancing is performed on the serving cell, cell handover is performed on some terminals in the serving cell.

The method according to claim 1, wherein the step of determining whether to load balance the serving cell according to the load factor of the serving cell and the average value of the load factor comprises:

Calculating a square of a difference between a load factor of the serving cell and an average value of the load factor; determining whether a square of a difference between a load factor of the serving cell and an average value of the load factor is greater than a preset threshold, and if greater than, Then, it is determined that load balancing is performed on the serving cell.

The method according to claim 1, wherein the step of performing cell switching on a part of the serving cells comprises:

The base station sends a parameter modification request message to the network management, where the parameter modification request message carries the updated cell handover parameter of the serving cell and an indication identifier of the parameter modification mode, where the updated serving cell The cell handover parameter is used to determine a cell handover for some terminals in the serving cell;

Receiving, by the base station, a synchronization message returned by the network management device in response to the parameter modification request message; determining, by the base station, a cell handover according to the updated handover parameter of the serving cell to a part of the terminal in the serving cell ;

When the result of the decision indicates that a cell handover needs to be performed on some terminals in the serving cell, the base station performs cell handover on the part of the terminal.

The method according to claim 3, wherein the step of receiving, by the base station, the synchronization message returned by the network management device in response to the parameter modification request message comprises:

After receiving the parameter modification request message, the network management device determines the parameter modification mode adopted according to the indication of the parameter modification mode;

When the indication identifier indicates that the parameter modification mode is the controlled mode, the network management device waits to receive the input instruction information, and when the received instruction information indicates that the parameter modification is performed, the network management unit stores the serving cell locally. The cell handover parameter is modified to the updated cell handover parameter of the serving cell in the parameter modification request message; when the indication identifier indicates that the parameter modification mode is a free mode, the network management device stores the service locally The cell handover parameter of the cell is modified to the updated cell handover parameter of the serving cell in the parameter modification request message;

After successfully modifying the cell handover parameter of the locally stored serving cell to the updated cell handover parameter of the serving cell in the parameter modification request message, the network management carries the modification result in the synchronization message. Issued to the base station.

After the base station receives the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, the base station will locally store the cell of the serving cell when the parameter modification confirmation message indicates that parameter modification is performed. The handover parameter is modified to the updated cell handover parameter of the serving cell in the parameter modification request message; or the base station modifies the locally stored cell handover parameter of the serving cell into the parameter modification request message. The updated cell handover parameter of the serving cell;

Determining, by the base station, a cell handover to a part of the terminals in the serving cell according to the updated handover parameter of the serving cell;

The method according to claim 5, wherein the step of receiving, by the base station, the parameter modification confirmation message returned by the network management device in response to the parameter modification request message comprises:

When the indication identifier indicates that the parameter modification mode is the controlled mode, the network management device waits to receive the input instruction information, and when the received instruction information indicates that the parameter modification is performed, the network management device is used to indicate that the parameter modification is performed. The parameter modification confirmation message is returned to the base station; when the received instruction information indicates that the parameter modification is cancelled, the network management unit returns the parameter modification confirmation message for canceling the parameter modification to the base station. .

The method according to any one of claims 1 to 6, wherein the step of the base station performing cell handover on some terminals in the serving cell includes:

Determining, by the base station, whether a neighboring cell of the serving cell is a cell that is controlled by the base station; if the neighboring cell is not a cell that is controlled by the base station, the base station notifies a peer base station that is in the neighboring cell Modifying a cell handover parameter of the neighboring cell with respect to the serving cell; the peer base station checks whether a neighbor cell list of the neighboring cell exists for the serving cell; if the serving cell exists, The peer base station notifies the network management unit to modify the cell handover parameter of the neighboring cell with respect to the serving cell, or the peer base station performs cell handover parameters of the neighboring cell with respect to the serving cell. Modify

If the neighboring cell is a cell that is controlled by the base station, the base station notifies the network management to modify the cell handover parameter of the neighboring cell, or the base station performs cell modification parameter modification on the neighboring cell. .

The method according to claim 1, wherein after performing cell switching on a part of the serving cells, the method further includes:

Determining whether the square of the difference between the load factor of the serving cell and the average value of the load factor is less than or equal to a preset threshold on a continuous predetermined period;

If the square is less than or equal to the preset threshold on consecutive predetermined periods, it is determined that the load balancing is successful;

If the squared unevenness is less than or equal to the preset threshold on consecutive predetermined periods, the cell handover parameter of the serving cell is modified to a cell handover parameter of the serving cell before the update.

A mobile load balancing system, comprising: a base station, where the base station includes:

An obtaining unit, configured to acquire a load factor of a serving cell under the jurisdiction of the base station and a load coefficient of all neighboring cells of the service cell;

a first determining unit, configured to determine whether a load factor of the serving cell is greater than a load coefficient of all neighboring cells;

The second determining unit is configured to determine, according to the load factor and the load factor average value of the serving cell, whether to load balance the serving cell when determining that the load coefficient of the serving cell is greater than the load coefficient of all neighboring cells The average value of the load factor is an average value of a load factor of the serving cell and a load factor of all neighboring cells of the serving cell;

The load balancing unit is configured to perform cell handover on some of the serving cells when it is determined that load balancing is performed on the serving cell.

The system according to claim 9, wherein the second determining unit comprises: a calculating module, configured to calculate a square of a difference between a load coefficient of the serving cell and an average value of the load factor;

The first determining module is configured to determine whether a square of a difference between the load factor of the serving cell and the average value of the load factor is greater than a preset threshold, and if greater, determine that load balancing is performed on the serving cell.

11. The system of claim 9, wherein the load balancing unit comprises:

The first sending module is configured to send a parameter modification request message to the network management, where the parameter modification request message carries the updated cell handover parameter of the serving cell and an indication identifier of the parameter modification mode, where the updated The cell handover parameter of the serving cell is used to determine a cell handover for some terminals in the serving cell;

a receiving module, configured to receive a synchronization message returned by the network management device in response to the parameter modification request message;

a first decision module, configured to perform a cell handover decision on a part of the serving cell according to the updated handover parameter of the serving cell;

The first load balancing module is configured to perform cell handover on the part of the terminal when the determination result indicates that a part of the terminal in the serving cell needs to perform cell handover.

The system according to claim 11, further comprising: a network management, wherein the network management comprises: a receiving unit, configured to receive the parameter modification request message;

a third determining unit, configured to determine, according to the indication identifier of the parameter modification mode, the parameter modification mode adopted after receiving the parameter modification request message;

The processing unit is configured to wait for receiving the input instruction information when the indication identifier indicates that the parameter modification mode is the controlled mode, and when the received instruction information indicates that the parameter modification is performed, the locally stored serving cell is The cell handover parameter is modified to the updated cell handover parameter of the serving cell in the parameter modification request message; when the indication identifier indicates that the parameter modification mode is a free mode, the locally stored cell of the serving cell is switched. The parameter is modified to the updated cell handover parameter of the serving cell in the parameter modification request message;

a first sending unit, configured to: after successfully modifying the locally stored cell handover parameter of the serving cell to the updated cell handover parameter of the serving cell in the parameter modification request message, in response to the parameter modification The request message carries the modification result in the synchronization message and sends the result to the base station.

The system according to claim 9, wherein the load balancing unit comprises:

The second sending module is configured to send a parameter modification request message to the network management, where the parameter modification request message carries the updated cell handover parameter of the serving cell and an indication identifier of the parameter modification mode, where the update The cell handover parameter of the serving cell is used for determining a cell handover for some terminals in the serving cell;

a first processing module, configured to: after the base station receives the parameter modification confirmation message returned by the network management device in response to the parameter modification request message, locally storing the base station when the parameter modification confirmation message indicates that parameter modification is performed The cell handover parameter of the serving cell is modified to the cell handover parameter of the updated serving cell in the parameter modification request message; or the cell handover parameter of the serving cell locally stored by the base station is modified to The updated cell handover parameter of the serving cell in the parameter modification request message;

a second decision module, configured to perform a cell handover decision on a part of the serving cell according to the updated handover parameter of the serving cell;

The second load balancing module is configured to perform cell switching on the part of the terminal when the result of the determination indicates that the cell of the part of the serving cell needs to be switched.

The system of claim 13, wherein the network management system further comprises: a second receiving unit, configured to determine, after receiving the parameter modification request message, the parameter modification mode adopted according to the indication identifier of the parameter modification mode;

The second sending unit is configured to wait for receiving the input instruction information when the indication identifier indicates that the parameter modification mode is the controlled mode, and is used to indicate the parameter modification when the received instruction information indicates that the parameter modification is performed. The parameter modification confirmation message is returned to the base station; when the received instruction information indicates cancellation of parameter modification, the parameter modification confirmation message for instructing cancellation of parameter modification is returned to the base station.

The system according to any one of claims 9 to 14, wherein the load balancing unit comprises: a third determining module, configured to determine whether a neighboring cell of the serving cell is a cell under the jurisdiction of the base station ;

a second processing module, configured to: if the neighboring cell is not a cell that is controlled by the base station, notify a peer base station that is in the neighboring cell to perform a cell handover parameter in the neighboring cell with respect to the serving cell And modifying, if the neighboring cell is a cell that is controlled by the base station, notifying the network management to modify the cell handover parameter of the neighboring cell, or directly modifying the cell handover parameter of the neighboring cell.

The system according to claim 9, wherein the base station further comprises: a fourth determining unit, configured to determine a difference between a load factor of the serving cell and an average value of the load factor over a continuous predetermined period Whether the square of the value is less than or equal to a preset threshold, and if the square is less than or equal to a preset threshold on consecutive predetermined periods, it is determined that the load balancing is successful;

The load balancing unit is further configured to modify the cell handover parameter of the serving cell to the serving cell before the update when it is determined that the squared unevenness is less than or equal to a preset threshold on consecutive predetermined periods. Cell handover parameters.