WO2016177109A1 - 一种负载均衡方法、装置及存储介质 - Google Patents

一种负载均衡方法、装置及存储介质 Download PDF

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Publication number
WO2016177109A1
WO2016177109A1 PCT/CN2016/076338 CN2016076338W WO2016177109A1 WO 2016177109 A1 WO2016177109 A1 WO 2016177109A1 CN 2016076338 W CN2016076338 W CN 2016076338W WO 2016177109 A1 WO2016177109 A1 WO 2016177109A1
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cell
optimized
load
qoffset2
target cell
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PCT/CN2016/076338
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English (en)
French (fr)
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刘芙蕾
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/0883—Load balancing or load distribution between entities in ad-hoc networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists

Definitions

  • the present invention relates to the field of wireless networks, and in particular, to a method, an apparatus, and a storage medium for idle state mobile load balancing in a self-organizing network (SON, Self-Organization Network).
  • SON Self-Organization Network
  • the wireless network of Universal Mobile Telecommunications System has been widely used.
  • the methods of network optimization include manual optimization and automatic optimization.
  • automatic optimization is one of self-organizing network functions, which is through automatic monitoring of network indicators. For example, a counter value or a key performance indicator (KPI) determines whether the network performance is degraded. When the network performance deteriorates, the corresponding wireless parameter value is adjusted for the deteriorated indicator to improve the network performance.
  • KPI key performance indicator
  • the goals of network optimization in self-organizing networks include network coverage, network capacity, network load, and so on.
  • high load parameter configuration can be adopted in the high load time of the network, so that the load of the network can be reasonably shunted and the network load is reduced;
  • the normal load time can be configured with common parameters to ensure the basic coverage and performance of the network.
  • the idle partial reselection parameters are adjusted and optimized. When these parameters are adjusted according to the network wireless performance indicators, the network load can be reduced by load shunting to some extent.
  • system broadcast message update is required. If the number of cells to be adjusted or system messages are updated frequently, system message storms may occur, and the system may be aggravated.
  • the measurement parameters are not configured properly, the user will not initiate the reselection measurement, and thus cannot reselect.
  • the embodiment of the present invention is to provide a load balancing method, device, and storage medium, which can overcome the system message storm caused by the mobile load balancing method in the existing UMTS self-organizing network and the reselection measurement parameters are not performed according to the network wireless performance indicators. The problem of adjustment.
  • the embodiment of the invention provides a load balancing method, and the method includes:
  • the offload target cell is a neighboring cell of the optimized cell that meets a preset condition.
  • the method further includes: when the optimized cell has multiple neighboring cells that meet the preset condition, randomly selecting N cells from the plurality of neighboring cells that meet the preset condition as the offload target cell.
  • adjusting the reselection parameters of the optimized cell and the offload target cell, and optimizing the reselection measurement parameters of the cell include:
  • the reselection parameter Qoffset2 of the optimized cell and the offload target cell is adjusted, so that the user is offloaded from the optimized cell to Divide the target cell and increase the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold (sintersearch) of the optimized cell;
  • the reselection parameter Qoffset2 of the optimized cell and the offload target cell is adjusted, and the user is offloaded from the offload target cell to Optimize the cell and lower the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold (sintersearch) of the optimized cell.
  • the controlling the cell system message in the ad hoc network includes:
  • the Qoffset2 of the offload target cell and the other optimized cells are not adjusted
  • the Qoffset2 of the other optimized cell and the offload target cell is adjusted to the idle time configuration
  • the Qoffset2 of the optimized cell and the offload target cell is adjusted to be a idle configuration.
  • the controlling the cell system message in the ad hoc network includes:
  • the Qoffset2 of the offload target cell and the other optimized cells are not adjusted
  • the Qoffset2 of the other optimized cell and the offload target cell is adjusted to the idle time configuration
  • the offload target cell and the optimized cell Qoffset2 are not adjusted.
  • the busy time configuration includes: a reselection parameter Qoffset2 value that enables a user to offload from the optimized cell to the offload target cell, and an intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold (sintersearch) value;
  • the busy time configuration includes: a reselection parameter Qoffset2 value when the user cannot be offloaded from the optimized cell to the offload target cell, and an intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold Value (sintersearch) value.
  • the embodiment of the invention further provides a load balancing device, the device comprising: a parameter adjustment module and a message control module, wherein
  • the parameter adjustment module is configured to: when a cell in the ad hoc network needs to perform load balancing, adjust reselection parameters of the optimized cell and the offload target cell, and optimize reselection measurement parameters of the cell;
  • the message control module is configured to control a cell system message in the ad hoc network
  • the offload target cell is a neighboring cell of the optimized cell that meets a preset condition.
  • the device further includes a cell number control module, configured to: when the optimized cell has multiple neighboring cells that meet the preset condition, randomly select N from the plurality of neighboring cells that meet the preset condition Each cell serves as a shunt target cell.
  • the parameter adjustment module is configured to:
  • the reselection parameter Qoffset2 of the optimized cell and the offload target cell is adjusted, so that the user is offloaded from the optimized cell to Divide the target cell and increase the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold (sintersearch) of the optimized cell;
  • the reselection parameter Qoffset2 of the optimized cell and the offload target cell is adjusted, and the user is offloaded from the offload target cell to Optimize the cell and lower the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold (sintersearch) of the optimized cell.
  • the message control module is configured to: when the Qoffset2 of the optimized cell and the offload target cell is configured as busy, within a preset time:
  • the Qoffset2 of the offload target cell and the other optimized cells are not adjusted
  • the Qoffset2 of the optimized cell and the offload target cell is adjusted to be a idle configuration.
  • the message control module is configured to: when the Qoffset2 of the optimized cell and the offload target cell is idle, in a preset time:
  • the Qoffset2 of the offload target cell and the other optimized cells are not adjusted
  • the Qoffset2 of the other optimized cell and the offload target cell is adjusted to the idle time configuration
  • the offload target cell and the optimized cell Qoffset2 are not adjusted.
  • the busy time configuration includes: a reselection parameter Qoffset2 value that enables a user to offload from the optimized cell to the offload target cell, and an intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold ( Sintersearch) value;
  • the busy time configuration includes: a reselection parameter Qoffset2 value when the user cannot be offloaded from the optimized cell to the offload target cell, and a sintrasearch/inter-frequency measurement threshold value (sintersearch) value.
  • a reselection parameter Qoffset2 value when the user cannot be offloaded from the optimized cell to the offload target cell
  • sintersearch sintrasearch/inter-frequency measurement threshold value
  • the embodiment of the invention further provides a computer storage medium storing a computer program for performing the load balancing method of the embodiment of the invention.
  • the load balancing method, device, and storage medium provided by the embodiments of the present invention adjust the reselection parameters of the optimized cell and the offload target cell and optimize the reselection measurement parameters of the cell when the cell in the ad hoc network needs to perform load balancing;
  • the cell system messages in the self-organizing network are controlled. In this way, it is possible to overcome the problem that the system message storm caused by a large number of system broadcast message updates and the reselection measurement parameters are not adjusted according to the network wireless performance indicators existing in the mobile load balancing function of the existing UMTS self-organizing network, so that the load shunting is more effective. Also effective Reduce the number of system messages and reduce system load.
  • FIG. 1 is a schematic flowchart of a load balancing method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a networking of an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a method for adjusting reselection parameters of an optimized cell and a offload target cell and optimizing reselection measurement parameters of a cell according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for controlling a number of traffic off target cells according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a load balancing apparatus according to an embodiment of the present invention.
  • the reselection parameters of the optimized cell and the offload target cell are adjusted, and the reselection measurement parameters of the cell are optimized; the cell system message in the ad hoc network is controlled.
  • the offload target cell is a neighboring cell of the optimized cell that meets a preset condition.
  • the high load time period and the normal load time period of the optimized cell are first identified in the ad hoc network.
  • the high load period is called busy time
  • the normal load period is called idle time.
  • the optimized cell adopts the high-load configuration, that is, the busy-time configuration, so that the load of the optimized cell is shunted to the surrounding neighboring area, thereby reducing the optimized cell load;
  • the idle time the optimized cell adopts the common load configuration, that is, the idle time configuration, ensuring optimization. Cell and neighbor coverage and load distribution. Under normal circumstances, there may be several busy hour configuration and idle time configuration changes within 24 hours a day.
  • the adjustment of the reselection parameters is based on the cell pair, that is, the optimized cell and the same frequency/inter-frequency neighboring cell of the optimized cell. Therefore, when the busy time configuration and the idle time configuration change occur, if the neighbor cells of the optimized cell are numerous, the system broadcast messages of multiple cells need to be updated, and a large number of system messages increase the load of the system equipment. Therefore, when performing load balancing, it is also necessary to control the system message update control and the number of neighbor cells that need to adjust parameters. Also, if reselection measurement The parameter sintrasearch/sintersearch configuration is unreasonable. Only adjusting the reselection parameter Qoffset can not achieve the desired effect. Therefore, when performing load balancing, the reselection measurement parameter sintrasearch/sintersearch needs to be adjusted.
  • FIG. 1 is a schematic flowchart of a load balancing method according to an embodiment of the present invention. As shown in FIG. 1 , the load balancing method in this embodiment includes the following steps:
  • Step 101 When the cell in the ad hoc network needs to perform load balancing, adjust reselection parameters of the optimized cell and the offload target cell, and optimize reselection measurement parameters of the cell.
  • the offload target cell is a neighboring cell of the optimized cell that meets a preset condition.
  • the offload target cell when the optimized cell is a cell with a load higher than a first preset threshold, the offload target cell may be a neighboring cell of the optimized cell with a load lower than a second preset threshold; When the optimized cell is a cell with a load lower than the second preset threshold, the offload target cell may be a neighboring cell of the optimized cell with a load higher than a first preset threshold;
  • adjusting the reselection parameters of the optimized cell and the offload target cell, and the reselection measurement parameters of the optimized cell include:
  • the adjustment principle of the optimized cell and the offload target cell to Qoffset2 is to enable the user to offload from the optimized cell to the neighbor.
  • the area adjusts the reselection parameter Qoffset2 of the optimized cell and the offload target cell, so that the user offloads from the optimized cell to the offload target cell, and raises the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold of the optimized cell ( Sintersearch) enables users of optimized cells to trigger reselection measurements earlier.
  • the adjustment principle of the optimized cell and the offload target cell to Qoffset2 is to optimize the cell to absorb the user as much as possible, and adjust Optimize the reselection parameter Qoffset2 of the cell and the offload target cell,
  • the user offloads the offloaded target cell to the optimized cell, and lowers the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold (sintersearch) of the optimized cell, making it more difficult for the user of the optimized cell to trigger the reselection measurement.
  • FIG. 2 is a schematic structural diagram of a networking of an embodiment of the present invention. As shown in FIG. 2, some cells to be optimized are selected in a wireless network, and an ad hoc network task is created to optimize parameters of a high load when adjusting an idle state. Optimize cell load by reducing busy time.
  • FIG. 3 is a schematic flowchart of a method for adjusting reselection parameters of an optimized cell and a traffic off-target cell and reselecting measurement parameters of a cell according to an embodiment of the present invention. According to the network structure shown in FIG. 2, the reselection measurement parameter is performed according to the embodiment of the present invention. Take the intra-frequency measurement threshold (sintrasearch) as an example, including the following steps:
  • Step 101A Determine a first preset threshold value and a second preset threshold value
  • the transmit power in the network wireless performance data may be selected as an indicator for estimating the cell load, for example, using 50% of the maximum transmit power of the cell as the first preset threshold, and using 40% of the maximum transmit power of the cell.
  • the method further includes setting, at the same time, the number N of the offload target cells that can adjust the parameters each time is not greater than 3.
  • Step 101B Determine a offload target cell of each optimized cell
  • the optimized cell A is taken as an example to optimize the same-frequency neighboring cell of the cell A, including the cells B, C, and D.
  • the power performance index KPI of the cell B is 35%, and the power performance index KPI of the cell C is 25%.
  • the power performance index KPI of the cell D is 55%; among all the intra-frequency neighboring cells of the optimized cell, there are cells B and C that meet the preset condition that the power performance index KPI is lower than the second preset threshold value by 40%;
  • the number N of the shunt target cells that can be adjusted each time can be adjusted to be no more than 3, and the actually adjustable neighboring areas that meet the preset conditions are only 2, therefore, the cell Both B and C can be used as the shunt target cell for optimizing cell A.
  • Step 101C Adjust the reselection parameter Qoffset2 of the optimized cell and the offload target cell and the sintrasearch of the optimized cell;
  • the adjustment may be performed according to the step size, for example, may be 2 dB;
  • the Qoffset2 of the cell B (or C) is adjusted to optimize the Qoffset2 of the cell A corresponding to the cell A (or C), so that the user is offloaded from the optimized cell to the neighboring cell.
  • the optimized cell needs to be lowered.
  • the sintrasearch makes it more difficult for the user of the optimized cell to trigger the reselection measurement; in the embodiment of the present invention, the adjustment may be performed according to the step size, for example, may be 2 dB; at the same time, the cell A corresponding to the offload target cell B (or C) needs to be adjusted.
  • Qoffset2 the small-divided target cell B (or C) corresponds to the Qoffset2 of the optimized cell A, so that the user offloads from the target off-cell to the optimized cell.
  • Step 102 Control cell system messages in the ad hoc network.
  • the cell with low load may become a shunt target cell of multiple high-load cells, that is, the optimized cell; and the time of adjusting parameters of each high-load cell is different, so that the cell system message with low load is continuously updated. , causing signaling storms and increasing system load. Therefore, system messages need to be controlled to avoid frequent updates of the system broadcast message SIB11/12 (system information block type 11/12).
  • the controlling the cell system message in the ad hoc network includes:
  • the timer T is started, and the timer T is within a preset time:
  • the offload target cell is not used as the target cell for the other optimized cell to be offloaded.
  • the offload target cell and the other are not adjusted.
  • Optimizing the Qoffset2 of the cell when other optimized cells are idle, that is, when the other optimized cell load is lower than the second preset threshold, the Qoffset2 of the other optimized cell and the offload target cell is adjusted to the idle time configuration;
  • the idle time arrives, that is, when the optimized cell load is lower than the second preset threshold, the Qoffset2 of the optimized cell and the offload target cell is adjusted to be idle configuration.
  • the offload target cell is not used as the target cell for the other optimized cell to be offloaded.
  • the offload target cell and the other are not adjusted.
  • Optimizing the Qoffset2 of the cell when other optimized cells are idle, that is, when the other optimized cell load is lower than the second preset threshold, the Qoffset2 of the other optimized cell and the offload target cell is adjusted to the idle time configuration; When the idle time comes, that is, when the optimized cell load is higher than the first preset threshold, the offload target cell and the optimized cell Qoffset2 are not adjusted.
  • the offload target cell can be used as a shunt target cell of other neighboring optimized cells, and the above process is repeated;
  • the timer T Before the timer T expires, when the offload target cell becomes a high load cell, the timer is stopped.
  • the busy time configuration includes: a reselection parameter Qoffset2 value that enables a user to offload from the optimized cell to the offload target cell, and a sintrasearch/inter-frequency measurement threshold value (sintersearch) value;
  • the busy time configuration includes: a reselection parameter Qoffset2 value when the user cannot be offloaded from the optimized cell to the offload target cell, and an intra-frequency measurement threshold value (sintrasearch) / Inter-frequency measurement threshold (sintersearch) value.
  • the network structure shown in FIG. 2 is taken as an example, and the cell B is a low-load cell, that is, the power performance index KPI is lower than the second preset threshold.
  • the value of the cell A, D, E, and F is a high-load cell, that is, the power performance index KPI of the cells A, D, E, and F is higher than the first preset threshold.
  • cells A, D, E, and F are optimized cells, and cell B is used as the traffic off-target cell for optimizing cells A, D, E, and F. Under normal circumstances, cell A needs to be adjusted during busy or idle time of cell A.
  • Qoffset2 of the cell B adjusting the Qoffset2 of the cell D and the cell when the cell D is busy or idle; adjusting the Qoffset2 of the cell E and the cell B when the cell E is busy or idle; and busy or idle in the cell F At this time, Qoffset2 of cell F and cell B are adjusted.
  • the Qoffset2 between the cell A and the cell B is adjusted to the busy configuration of the A, the system message of the cell B is triggered to be updated, and the cell B timer T is started. ;
  • Qoffset2 between the cell D and the cell B, or Qoffset2 between the cells E and B, or Qoffset2 between the cell F and the cell B are not performed.
  • the Qoffset2 between the cell A and the cell B is adjusted to be the idle time configuration of the cell A.
  • the timer T expires, the timer T is cleared. If the busy time of cell A or D or E or F comes, the above process is repeated.
  • the timer T is stopped.
  • the method further includes: when the optimized cell has multiple neighboring cells that meet the preset condition, randomly selecting N cells from the plurality of neighboring cells that meet the preset condition as the shunting target. Community.
  • the adjustment of the reselection parameters is based on the cell pair, that is, the optimized cell and its co-frequency/inter-frequency neighboring cell.
  • the N neighboring cells may be randomly selected in the trafficisable neighboring cell as the optimized cell to be adjusted in the same frequency/inter-frequency neighboring cell, that is, the splitting target cell.
  • the parameter adjustment is performed only for the selected offload target cell.
  • FIG. 4 is a schematic flowchart of a method for controlling the number of traffic distribution target cells according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
  • Step 401 Determine a first preset threshold value and a second preset threshold value.
  • the transmit power in the network wireless performance data is selected as an indicator for estimating the cell load.
  • Step 402 Determine all low-load co-frequency/inter-frequency neighboring cells of each optimized cell.
  • the offload target cell is a divertible low load co-frequency neighboring cell of the optimized cell.
  • the cell in the same-frequency neighboring cell that satisfies the power performance index KPI lower than the second preset threshold in the cell A has the cells B, C, and D, that is, the power performance index K of the B. ⁇ 40%, C's power performance index KPI ⁇ 40%, D's power performance index KPI ⁇ 40%, so the cell has cells B, C, D for all the low-load co-frequency/inter-frequency neighbors of the optimized cell A Area;
  • Step 403 Select N cells from all low-load co-frequency/inter-frequency neighboring cells as the offload target cell of the optimized cell.
  • the target cell is shunted.
  • the selection of the first preset threshold and the second preset threshold in the embodiment of the present invention is only taking the power performance index as an example, but is not limited thereto, and all indicators that can distinguish the busy hour and the idle time of the cell
  • the selection basis of the first preset threshold value and the second preset threshold value of the number of the embodiments of the present invention can be used.
  • FIG. 5 is a schematic structural diagram of a load balancing device according to an embodiment of the present invention. As shown in FIG. 5, the device includes: a parameter adjusting module 51 and a message control module 52, where
  • the parameter adjustment module 51 is configured to: when a cell in the ad hoc network needs to perform load balancing, adjust reselection parameters of the optimized cell and the offload target cell, and optimize reselection measurement parameters of the cell;
  • the offload target cell is a neighboring cell of the optimized cell that meets a preset condition.
  • the offload target cell when the optimized cell is a cell with a load higher than a first preset threshold, the offload target cell may be a neighboring cell of the optimized cell with a load lower than a second preset threshold;
  • the offload target cell When the optimized cell is a cell whose load is lower than the second preset threshold, the offload target cell may a neighboring cell of the optimized cell with a load higher than a first preset threshold;
  • the parameter adjustment module 51 is configured to:
  • the adjustment principle of the optimized cell and the offload target cell to Qoffset2 is to enable the user to offload from the optimized cell to the neighbor.
  • the parameter adjustment module 51 adjusts the reselection parameter Qoffset2 of the optimized cell and the offload target cell, so that the user offloads from the optimized cell to the offload target cell, and raises the intra-frequency measurement threshold (sintrasearch) of the optimized cell.
  • the frequency measurement threshold (sintersearch) enables the user of the optimized cell to trigger the reselection measurement earlier.
  • the adjustment principle of the optimized cell and the offload target cell to Qoffset2 is to optimize the cell to absorb the user as much as possible.
  • the parameter adjustment module 51 adjusts the reselection parameter Qoffset2 of the optimized cell and the offload target cell, and the user offloads the offload target cell to the optimized cell, and lowers the intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement threshold of the optimized cell.
  • the value (sintersearch) makes it more difficult for users of optimized cells to trigger reselection measurements.
  • the message control module 52 is configured to control a cell system message in the ad hoc network
  • the power performance index KPI when the load of a certain cell is low, for example, the power performance index KPI is lower than the second preset threshold, and the surrounding neighboring area load is high, for example, the power performance index KPI is higher than the first preset threshold.
  • the cell with low load may become a shunt target cell of multiple high-load cells, that is, the optimized cell; and the time of adjusting parameters of each high-load cell is different, so that the cell system message with low load is continuously updated. , causing signaling storms and increasing system load. Therefore, the message control module 52 needs to control the system message to avoid frequent update of the system broadcast message SIB11/12 (system information block type 11/12).
  • the message control module 52 is configured to:
  • the message control is performed when the Qoffset2 of the optimized cell and the offload target cell are busy.
  • Module 52 starts timer T, within the preset time of timer T:
  • the traffic offgoing target cell is not used as the target cell for the other optimized cell to be offloaded.
  • the message control module 52 does not adjust the shunt. Qoffset2 of the target cell and the other optimized cells;
  • the message control module 52 adjusts the Qoffset2 of the other optimized cell and the offload target cell to the idle time configuration
  • the message control module 52 adjusts the Qoffset2 of the optimized cell and the offload target cell to a idle time configuration.
  • the traffic offgoing target cell is not used as the target cell for the other optimized cell to be offloaded.
  • the message control module 52 does not adjust the shunt. Qoffset2 of the target cell and the other optimized cells;
  • the message control module 52 adjusts the Qoffset2 of the other optimized cell and the offload target cell to the idle time configuration
  • the message control module 52 When the idle time of the optimized cell arrives, that is, when the optimized cell load is higher than the first preset threshold, the message control module 52 does not adjust the Qoffset2 of the offload target cell and the optimized cell.
  • the message control module 52 clears the timer T, and the offload target cell can serve as a shunt target cell of other neighboring optimized cells, and repeats the foregoing process;
  • the message control module 52 stops the timer when the offload target cell becomes a high load cell before the expiration of the timer T.
  • the busy time configuration includes: a reselection parameter Qoffset2 value that enables a user to offload from the optimized cell to the offload target cell, and an intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement a sintersearch value; the busy time configuration includes: a reselection parameter Qoffset2 value when the user cannot be offloaded from the optimized cell to the offload target cell, and an intra-frequency measurement threshold (sintrasearch)/inter-frequency measurement gate Limit value (sintersearch).
  • the device further includes a cell number control module 53 configured to: when the optimized cell has multiple neighboring cells that meet the preset condition, from the multiple neighboring cells that meet the preset condition N cells are randomly selected as the offload target cell.
  • the adjustment of the reselection parameters is based on the cell pair, that is, the optimized cell and its co-frequency/inter-frequency neighboring cell.
  • the cell number control module 53 randomly selects N neighboring cells in the trafficisable neighboring cells as the optimized cell to be adjusted in the same frequency/inter-frequency neighboring cell, that is, the shunting Target cell.
  • the optimized cell is busy or idle, the parameter adjustment is performed only for the selected offload target cell.
  • Each module in the load balancing apparatus proposed in the embodiment of the present invention may be implemented by a processor, and may also be implemented by a specific logic circuit; wherein the processor may be a processor on a mobile terminal or a server, in practice
  • the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field programmable gate array (FPGA).
  • CPU central processing unit
  • MPU microprocessor
  • DSP digital signal processor
  • FPGA field programmable gate array
  • the load balancing method described above is implemented in the form of a software function module and sold or used as a stand-alone product, it may also be stored in a computer readable storage medium.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • program codes such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is used to execute the load balancing method of the embodiment of the present invention.
  • the reselection parameters of the optimized cell and the offload target cell are adjusted, and the reselection measurement parameters of the cell are optimized; and the cell system message in the ad hoc network is controlled.
  • the system message storm caused by a large number of system broadcast message updates and the reselection measurement parameters are not adjusted according to the network wireless performance indicators existing in the mobile load balancing function of the existing UMTS self-organizing network, so that the load shunting is more effective.

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Abstract

本发明提供了一种负载均衡方法，所述方法包括：当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；对自组织网络中的小区系统消息进行控制；其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。本发明还提供了一种负载均衡装置及存储介质。

Description

一种负载均衡方法、装置及存储介质 技术领域
本发明涉及无线网络领域，尤其涉及自组织网络(SON，Self-Organization Network)中空闲态移动负载均衡的方法、装置及存储介质。
背景技术
目前通用移动通信系统(UMTS，Universal Mobile Telecommunications System)的无线网络已经被广泛应用，网络优化的方法包括人工优化和自动优化，其中，自动优化是自组织网络功能之一，是通过自动监控网络指标，如计数器(counter)值或主要性能指示(KPI，key performance indicator))，确定网络性能是否恶化；当网络性能恶化时，针对恶化的指标，调整相应的无线参数值，使网络性能改善。
自组织网络中网络优化的目标包括网络覆盖，网络容量，网络负载等。其中，对于网络负荷的优化，在确定出网络的高负荷时间和正常负荷时间后，可以在网络的高负荷时间采用高负荷参数配置，使网络的负荷进行合理分流，降低网络负荷；在网络的正常负荷时间可采用普通参数配置，保证网络的基本覆盖和性能。
在确定合理的高负荷参数配置的过程中，需要根据网络的性能指标不断地进行逐步调整，使相关性能指标达到最优，从而获得合理的高负荷参数配置。但是，合理的高负荷参数配置并不是一直保持不变地，当网络中用户分布情况发生变化，或者用户行为发生变化时，网络无线性能指标也会发生改变，此时需要根据网络情况的变化重新调整参数配置，也即参数优化的过程。
在UMTS自组织网络中，进行移动负载均衡最常用的方法之一是对空 闲态的部分重选参数进行调整优化，当这些参数根据网络无线性能指标进行调整后，在一定程度上可以通过负荷分流从而降低网路负荷。但是，目前的空闲态移动负载均衡方法中还存在很多问题，例如，调整重选参数后，需要进行系统广播消息更新，如果调整的小区众多或者系统消息更新频繁，会引起系统消息风暴，加重系统负荷；同时，调整重选参数后，如果测量参数配置不合理，用户不会发起重选的测量，进而也无法进行重选。
发明内容
有鉴于此，本发明实施例期望提供一种负载均衡方法、装置及存储介质，能够克服现有UMTS自组织网络中移动负载均衡方法引起的系统消息风暴以及重选测量参数没有根据网络无线性能指标进行调整的问题。
为达到上述目的，本发明实施例的技术方案是这样实现的：
本发明实施例提供了一种负载均衡方法，所述方法包括：
当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；
对自组织网络中的小区系统消息进行控制；
其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
上述方案中，所述方法还包括：当所述优化小区存在多个符合预设条件的邻区时，从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。
上述方案中，所述当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数包括：
当优化小区负载高于第一预设门限值且分流目标小区的负载低于第二预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，使用户从优化小区分流到分流目标小区，并调高优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)；
当优化小区负载低于第二预设门限值且分流目标小区的负载高于第一预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，用户从分流目标小区分流到优化小区，并调低优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)。
上述方案中，所述对自组织网络中的小区系统消息进行控制包括：
当优化小区与分流目标小区的Qoffset2为忙时配置时，在预设时间内：
当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
当优化小区负载低于第二预设门限值时，调整所述优化小区与所述分流目标小区的Qoffset2为闲时配置。
上述方案中，所述对对自组织网络中的小区系统消息进行控制包括：
优化小区与分流目标小区的Qoffset2为闲时配置时，在预设时间内：
当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
当优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述优化小区的Qoffset2。
上述方案中，所述忙时配置包括：使用户能够从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值；
所述忙时配置包括：使用户不能从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限 值(sintersearch)值。
本发明实施例还提供了一种负载均衡装置，所述装置包括：参数调整模块、消息控制模块，其中，
所述参数调整模块，配置为当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；
所述消息控制模块，配置为对自组织网络中的小区系统消息进行控制；
其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
上述方案中，所述装置还包括小区数目控制模块，配置为：当所述优化小区存在多个符合预设条件的邻区时，从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。
上述方案中，所述参数调整模块配置为：
当优化小区负载高于第一预设门限值且分流目标小区的负载低于第二预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，使用户从优化小区分流到分流目标小区，并调高优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)；
当优化小区负载低于第二预设门限值且分流目标小区的负载高于第一预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，用户从分流目标小区分流到优化小区，并调低优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)。
上述方案中，所述消息控制模块配置为：当优化小区与分流目标小区的Qoffset2为忙时配置时，在预设时间内：
当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流 目标小区的Qoffset2调整为闲时配置；
当优化小区负载低于第二预设门限值时，调整所述优化小区与所述分流目标小区的Qoffset2为闲时配置。
上述方案中，所述消息控制模块配置为：优化小区与分流目标小区的Qoffset2为闲时配置时，在预设时间内：
当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
当优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述优化小区的Qoffset2。
上述方案中，所述所述忙时配置包括：使用户能够从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值；
所述忙时配置包括：使用户不能从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质存储有计算机程序，该计算机程序用于执行本发明实施例的负载均衡方法。
本发明实施例所提供的负载均衡方法、装置及存储介质，当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；对自组织网络中的小区系统消息进行控制。如此，能够克服现有UMTS自组织网络中移动负载均衡功能存在的由于大量系统广播消息更新可能引起的系统消息风暴以及重选测量参数没有根据网络无线性能指标进行调整的问题，使负荷分流更加有效，同时有效 减少了系统消息数量，降低了系统负荷。
附图说明
图1为本发明实施例负载均衡方法流程示意图；
图2为本发明实施例组网结构示意图；
图3为本发明实施例调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数的方法流程示意图；
图4为本发明实施例分流目标小区数目控制方法流程示意图；
图5为本发明实施例负载均衡装置结构示意图。
具体实施方式
本发明实施例中，当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；对自组织网络中的小区系统消息进行控制；其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
本发明实施例中，自组织网络中首先识别出优化小区的高负荷时间段和正常负荷时间段。本发明实施例中，高负荷时间段称为忙时，反之，正常负荷时间段称之为闲时。在忙时，优化小区采用高负荷配置即忙时配置，使优化小区的负荷分流到周围的邻区，从而降低优化小区负荷；在闲时，优化小区采用普通负荷配置即闲时配置，保证优化小区和邻区覆盖以及负荷分配。正常情况下，一天24小时内可能会存在数次忙时配置和闲时配置变更，由于重选参数的调整都是基于小区对的，即优化小区以及优化小区的同频/异频邻区，因此，在发生忙时配置和闲时配置变更时，如果优化小区的邻区众多，则会有多个小区的系统广播消息需要更新，大量的系统消息增加了系统设备的负荷。因此，在进行负载均衡时，还需要对系统消息更新控制，以及需要调整参数的邻区数量进行控制。另外，如果重选测量 参数sintrasearch/sintersearch配置不合理，仅调整重选参数Qoffset也达不到期望的效果，因此，在进行负载均衡时，还需要对重选测量参数sintrasearch/sintersearch进行调整。
下面结合附图及实施例，对本发明实施例技术方案的实施作详细描述。图1为本发明实施例一负载均衡方法流程示意图，如图1所示，本实施例负载均衡方法包括以下步骤：
步骤101：当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；
其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
例如，当所述优化小区为负载高于第一预设门限值的小区时，所述分流目标小区可以为负载低于第二预设门限值的所述优化小区的邻区；当所述优化小区为负载低于第二预设门限值的小区时，所述分流目标小区可以为负载高于第一预设门限值的所述优化小区的邻区；
本发明实施例中，所述当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数包括：
当优化小区负载高于第一预设门限值且分流目标小区的负载低于第二预设门限值时，优化小区与分流目标小区对Qoffset2的调整原则是使用户从优化小区分流到邻区，则调整优化小区与分流目标小区的重选参数Qoffset2，使用户从优化小区分流到分流目标小区，并调高优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)，使优化小区的用户更早的触发重选测量。
当优化小区负载低于第二预设门限值且分流目标小区的负载高于第一预设门限值时，优化小区与分流目标小区对Qoffset2的调整原则是优化小区尽量吸收用户时，调整优化小区与分流目标小区的重选参数Qoffset2，用 户从分流目标小区分流到优化小区，并调低优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)，使优化小区的用户更难触发重选测量。
图2为本发明实施例组网结构示意图，如图2所示，在无线网络中选出一些待优化的小区，创建一个自组织网络任务，实现通过调整空闲态优化小区高负荷时参数，从而降低忙时优化小区负荷。图3为本发明实施例调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数的方法流程示意图，根据图2所示组网结构，本发明实施例所述重选测量参数以同频测量门限值(sintrasearch)为例，包括以下步骤：
步骤101A：确定第一预设门限值和第二预设门限值；
本发明实施例中，可以选取网络无线性能数据中的发射功率作为评估小区负荷的指标，例如，使用小区最大发射功率的50％作为第一预设门限值，使用小区最大发射功率的40％作为第二预设门限值，本发明实施例中，当前发射功率占小区最大发射功率的百分比可以使用功率性能指标KPI来表示，即功率性能指标KPI＝60％即表示当前发射功率为小区最大发射功率的60％。
本发明实施例中，所述方法还包括同时设置每次能够调整参数的分流目标小区的个数N不大于3。
步骤101B：确定每个优化小区的分流目标小区；
本步骤中，以优化小区A为例，优化小区A的同频邻区包括小区B、C、D，其中，小区B的功率性能指标KPI为35％，小区C的功率性能指标KPI为25％，小区D的功率性能指标KPI为55％；优化小区的所有同频邻区中，符合预设条件即功率性能指标KPI低于第二预设门限值40％的有小区B和C；同时，由于设置的每次能够调整参数的分流目标小区的个数N不得大于3，而实际可调整的符合预设条件的邻区只有2个，因此，小区 B和C都可作为优化小区A的分流目标小区。
步骤101C：调整优化小区和分流目标小区的重选参数Qoffset2以及优化小区的sintrasearch；
本步骤中，如果优化小区A的功率性能指标KPI>第一预设门限值50％，并且分流目标小区B(或C)的功率性能指标KPI<第二预设门限值40％，则需要调高优化小区的sintrasearch，使优化小区的用户更早的触发重选测量；本发明实施例中，可以根据步长进行调整，例如可以为2dB；同时，需要调小优化小区A对应分流目标小区B(或C)的Qoffset2，调大分流目标小区B(或C)对应优化小区A的Qoffset2，使用户从优化小区分流到邻区，。
如果优化小区A的功率性能指标KPI<第二预设门限值40％，并且邻区B(或C)的功率性能指标KPI>第一预设门限值50％，则需要调低优化小区的sintrasearch，使优化小区的用户更难触发重选测量；本发明实施例中，可以根据步长进行调整，例如可以为2dB；同时，需要调大优化小区A对应分流目标小区B(或C)的Qoffset2，调小分流目标小区B(或C)对应优化小区A的Qoffset2，使用户从目标分流小区分流到优化小区。
步骤102：对自组织网络中的小区系统消息进行控制；
本发明实施例中，当某小区负荷低，如功率性能指标KPI低于第二预设门限值，而周围邻区负荷都很高，如功率性能指标KPI高于第一预设门限值时，则所述负荷低的小区可能会成为周围多个高负荷小区即优化小区的分流目标小区；而由于各高负荷小区调整参数的时间不同，所以会使该负荷低的小区系统消息不断更新，造成信令风暴，增加系统负荷。因此，需要对系统消息进行控制，避免系统广播消息SIB11/12(system information block type 11/12)的频繁更新。
所述对自组织网络中的小区系统消息进行控制包括：
当优化小区与分流目标小区的Qoffset2为忙时配置时，启动定时器T，在定时器T的在预设时间内：
分流目标小区不作为其它优化小区进行分流的目标小区，其它优化小区忙时到来时，即当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；当其它优化小区闲时到来时，即当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；当优化小区的闲时到来时，即当优化小区负载低于第二预设门限值时，调整所述优化小区与所述分流目标小区的Qoffset2为闲时配置。
优化小区与分流目标小区的Qoffset2为闲时配置时，在预设时间内：
分流目标小区不作为其它优化小区进行分流的目标小区，其它优化小区忙时到来时，即当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；当其它优化小区闲时到来时，即当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；当优化小区的闲时到来时，即当优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述优化小区的Qoffset2。
当定时器T到期时，定时器T清零。分流目标小区可作为其他相邻优化小区的分流目标小区，并重复上述过程；
在定时器T到期之前，当分流目标小区变成高负荷小区时，则停止定时器。
其中，所述忙时配置包括：使用户能够从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值；所述忙时配置包括：使用户不能从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值 (sintrasearch)/异频测量门限值(sintersearch)值。
本发明实施例对自组织网络中的小区系统消息进行控制方法中，仍然以图2所述组网结构为例，小区B为低负荷小区，即功率性能指标KPI低于第二预设门限值；小区A、D、E、F为高负荷小区，即小区A、D、E、F的功率性能指标KPI高于第一预设门限值。则小区A、D、E、F为优化小区，小区B同时作为优化小区A、D、E、F的分流目标小区；在正常情况下，需要在小区A的忙时或闲时，调整小区A和小区B的Qoffset2，在小区D的忙时或闲时，调整小区D和小区的Qoffset2；在小区E的忙时或闲时调整小区E和小区B的Qoffset2；在小区F的忙时或闲时，调整小区F和小区B的Qoffset2。
小区A、D、E，F中，小区A的忙时首先到来时，将小区A和小区B间的Qoffset2调整为A的忙时配置，触发小区B的系统消息更新，开启小区B定时器T；
定时器T到时前：
如果小区B采用的是小区A的忙时配置，则：
当小区D或E或F的忙时到来时，不进行小区D和小区B间的Qoffset2、或小区E和B间的Qoffset2、或小区F和小区B间的Qoffset2的调整。
当小区D或E或F的闲时到来时，若小区D和小区B间的Qoffset2、或小区E和小区B间的Qoffset2、或小区F和小区B间的Qoffset2采用的是忙时配置，则需要调整为闲时配置。
当小区A的闲时到来，调整小区A和小区B间的Qoffset2为小区A的闲时配置。
如果小区B采用的是小区A的闲时配置，则：
当小区D或E或F的忙时到来时，不进行小区D和小区B间的Qoffset2、或小区E和小区B间的Qoffset2，或小区F和小区B间的Qoffset2的调整。
当小区D或E或F的闲时到来时，若小区D和小区B间的Qoffset2、或小区E和小区B间的Qoffset2、或小区F和小区B间的Qoffset2采用的是忙时配置，则需要调整为闲时配置。
当小区A的忙时到来，不调整小区A和小区B间的Qoffset2，也即小区A和小区B间的Qoffset2的值保持不变。
定时器T到时，则定时器T清零。若小区A或D或E或F的忙时到来时，重复上述过程。
当小区B变成高负荷小区时，且定时器T未到时，则停止定时器T。
本发明实施例中，所述方法还包括：当所述优化小区存在多个符合预设条件的邻区时，从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。
本发明实施例中，重选参数的调整都是基于小区对的，即优化小区及其同频/异频邻区。当优化小区符合预设条件的可分流邻区数目较多时，可在这些可分流邻区中随机选择N个邻区，作为优化小区待调整同频/异频邻区，即分流目标小区。当优化小区忙时或闲时到来时，只对选定的分流目标小区进行参数调整。
在一实施例中，当存在多个符合预设条件的邻区时，需要从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。以图2所示组网结构为例，图4为本发明实施例所述分流目标小区数目控制方法流程示意图，如图4所示，包括以下步骤：
步骤401：确定第一预设门限值和第二预设门限值；
选取网络无线性能数据中的发射功率作为评估小区负荷的指标，例如，根据功率性能指标KPI确定第一预设门限值和第二预设门限值，功率性能指标KPI＝50％为第一预设门限值，功率性能指标KPI＝40％为第二预设门限值，并设置每次能够调整参数的最大分流目标小区个数N＝2。
步骤402：确定每个优化小区的所有低负荷同频/异频邻区；
其中，所述分流目标小区为所述优化小区的可分流的低负荷同频邻区。以优化小区A为例，优化小区A的同频邻区中满足功率性能指标KPI低于第二预设门限值的小区有小区B、C、D三个小区，即B的功率性能指标KPI<40％，C的功率性能指标KPI<40％，D的功率性能指标KPI<40％，所以，小区有小区B、C、D为所述优化小区A的所有低负荷同频/异频邻区；
步骤403：从所有低负荷同频/异频邻区中选取N个小区作为优化小区的分流目标小区；
本发明实施例中，由于每次能够调整参数的最大邻区个数N＝2，所以在B，C，D三个小区中随机选择两个小区，例如小区B和小区D作为优化小区A的分流目标小区。
本发明实施例中所述第一预设门限值与第二预设门限值的选取仅仅是以功率性能指标为例，但并不限于此，所有能区分小区忙时和闲时的指标，均可以作为本发明实施例作数的第一预设门限值与第二预设门限值的选取基础。
本发明实施例还提供了一种负载均衡装置，图5为本发明实施例负载均衡装置结构示意图，如图5所示，所述装置包括：参数调整模块51、消息控制模块52，其中，
所述参数调整模块51，配置为当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；
其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
例如，当所述优化小区为负载高于第一预设门限值的小区时，所述分流目标小区可以为负载低于第二预设门限值的所述优化小区的邻区；当所述优化小区为负载低于第二预设门限值的小区时，所述分流目标小区可以 为负载高于第一预设门限值的所述优化小区的邻区；
本发明实施例中，所述参数调整模块51配置为：
当优化小区负载高于第一预设门限值且分流目标小区的负载低于第二预设门限值时，优化小区与分流目标小区对Qoffset2的调整原则是使用户从优化小区分流到邻区，则所述参数调整模块51调整优化小区与分流目标小区的重选参数Qoffset2，使用户从优化小区分流到分流目标小区，并调高优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)，使优化小区的用户更早的触发重选测量。
当优化小区负载低于第二预设门限值且分流目标小区的负载高于第一预设门限值时，优化小区与分流目标小区对Qoffset2的调整原则是优化小区尽量吸收用户时，则所述参数调整模块51调整优化小区与分流目标小区的重选参数Qoffset2，用户从分流目标小区分流到优化小区，并调低优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)，使优化小区的用户更难触发重选测量。
所述消息控制模块52，配置为对自组织网络中的小区系统消息进行控制；
本发明实施例中，当某小区负荷低，如功率性能指标KPI低于第二预设门限值，而周围邻区负荷都很高，如功率性能指标KPI高于第一预设门限值时，则所述负荷低的小区可能会成为周围多个高负荷小区即优化小区的分流目标小区；而由于各高负荷小区调整参数的时间不同，所以会使该负荷低的小区系统消息不断更新，造成信令风暴，增加系统负荷。因此，所述消息控制模块52需要对系统消息进行控制，避免系统广播消息SIB11/12(system information block type 11/12)的频繁更新。
本发明实施例中，所述消息控制模块52配置为：
当优化小区与分流目标小区的Qoffset2为忙时配置时，所述消息控制 模块52启动定时器T，在定时器T的在预设时间内：
分流目标小区不作为其它优化小区进行分流的目标小区，其它优化小区忙时到来时，即当其他优化小区负载高于第一预设门限值时，所述消息控制模块52不调整所述分流目标小区与所述其他优化小区的Qoffset2；
当其它优化小区闲时到来时，即当其他优化小区负载低于第二预设门限值时，所述消息控制模块52将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
当优化小区的闲时到来时，即当优化小区负载低于第二预设门限值时，所述消息控制模块52调整所述优化小区与所述分流目标小区的Qoffset2为闲时配置。
优化小区与分流目标小区的Qoffset2为闲时配置时，在预设时间内：
分流目标小区不作为其它优化小区进行分流的目标小区，其它优化小区忙时到来时，即当其他优化小区负载高于第一预设门限值时，所述消息控制模块52不调整所述分流目标小区与所述其他优化小区的Qoffset2；
当其它优化小区闲时到来时，即当其他优化小区负载低于第二预设门限值时，所述消息控制模块52将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
当优化小区的闲时到来时，即当优化小区负载高于第一预设门限值时，所述消息控制模块52不调整所述分流目标小区与所述优化小区的Qoffset2。
当定时器T到期时，所述消息控制模块52将定时器T清零，分流目标小区可作为其他相邻优化小区的分流目标小区，并重复上述过程；
在定时器T到期之前，当分流目标小区变成高负荷小区时，所述消息控制模块52停止定时器。
其中，所述忙时配置包括：使用户能够从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测 量门限值(sintersearch)值；所述忙时配置包括：使用户不能从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值。
本发明实施例中，所述装置还包括小区数目控制模块53，配置为：当所述优化小区存在多个符合预设条件的邻区时，从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。
本发明实施例中，重选参数的调整都是基于小区对的，即优化小区及其同频/异频邻区。当优化小区符合预设条件的可分流邻区数目较多时，小区数目控制模块53在这些可分流邻区中随机选择N个邻区，作为优化小区待调整同频/异频邻区，即分流目标小区。当优化小区忙时或闲时到来时，只对选定的分流目标小区进行参数调整。
本发明实施例中提出的负载均衡装置中的各个模块都可以通过处理器来实现，当然也可通过具体的逻辑电路实现；其中所述处理器可以是移动终端或服务器上的处理器，在实际应用中，处理器可以为中央处理器(CPU)、微处理器(MPU)、数字信号处理器(DSP)或现场可编程门阵列(FPGA)等。
本发明实施例中，如果以软件功能模块的形式实现上述负载均衡方法，并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read Only Memory，ROM)、磁碟或者光盘等各种可以存储程序代码的介质。这样，本发明实施例不限制于任何特定的硬件和软件结合。
相应地，本发明实施例还提供一种计算机存储介质，该计算机存储介质中存储有计算机程序，该计算机程序用于执行本发明实施例的上述负载均衡方法。
以上所述仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；对自组织网络中的小区系统消息进行控制。如此，能够克服现有UMTS自组织网络中移动负载均衡功能存在的由于大量系统广播消息更新可能引起的系统消息风暴以及重选测量参数没有根据网络无线性能指标进行调整的问题，使负荷分流更加有效，同时有效减少了系统消息数量，降低了系统负荷。

Claims (13)

  1. 一种负载均衡方法，所述方法包括：
    当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；
    对自组织网络中的小区系统消息进行控制；
    其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
  2. 根据权利要求1所述方法，其中，所述方法还包括：当所述优化小区存在多个符合预设条件的邻区时，从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。
  3. 根据权利要求1所述方法，其中，所述当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数包括：
    当优化小区负载高于第一预设门限值且分流目标小区的负载低于第二预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，使用户从优化小区分流到分流目标小区，并调高优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)；
    当优化小区负载低于第二预设门限值且分流目标小区的负载高于第一预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，用户从分流目标小区分流到优化小区，并调低优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)。
  4. 根据权利要求1所述方法，其中，所述对自组织网络中的小区系统消息进行控制包括：
    当优化小区与分流目标小区的Qoffset2为忙时配置时，在预设时间内：
    当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
    当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
    当优化小区负载低于第二预设门限值时，调整所述优化小区与所述分流目标小区的Qoffset2为闲时配置。
  5. 根据权利要求1所述方法，其中，所述对对自组织网络中的小区系统消息进行控制包括：
    优化小区与分流目标小区的Qoffset2为闲时配置时，在预设时间内：
    当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
    当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
    当优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述优化小区的Qoffset2。
  6. 根据权利要求4或5所述方法，其中，
    所述忙时配置包括：使用户能够从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值；
    所述忙时配置包括：使用户不能从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值。
  7. 一种负载均衡装置，所述装置包括：参数调整模块、消息控制模块，其中，
    所述参数调整模块，配置为当自组织网络中的小区需要进行负载均衡时，调整优化小区和分流目标小区的重选参数以及优化小区的重选测量参数；
    所述消息控制模块，配置为对自组织网络中的小区系统消息进行控制；
    其中，所述分流目标小区为符合预设条件的所述优化小区的邻区。
  8. 根据权利要求7所述装置，其中，所述装置还包括小区数目控制模块，配置为：当所述优化小区存在多个符合预设条件的邻区时，从所述多个符合预设条件的邻区中随机选取N个小区作为分流目标小区。
  9. 根据权利要求7所述装置，其中，所述参数调整模块配置为：
    当优化小区负载高于第一预设门限值且分流目标小区的负载低于第二预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，使用户从优化小区分流到分流目标小区，并调高优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)；
    当优化小区负载低于第二预设门限值且分流目标小区的负载高于第一预设门限值时，调整优化小区与分流目标小区的重选参数Qoffset2，用户从分流目标小区分流到优化小区，并调低优化小区的同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)。
  10. 根据权利要求7所述装置，其中，所述消息控制模块配置为：当优化小区与分流目标小区的Qoffset2为忙时配置时，在预设时间内：
    当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述其他优化小区的Qoffset2；
    当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
    当优化小区负载低于第二预设门限值时，调整所述优化小区与所述分流目标小区的Qoffset2为闲时配置。
  11. 根据权利要求7所述装置，其中，所述消息控制模块配置为：优化小区与分流目标小区的Qoffset2为闲时配置时，在预设时间内：
    当其他优化小区负载高于第一预设门限值时，不调整所述分流目标小 区与所述其他优化小区的Qoffset2；
    当其他优化小区负载低于第二预设门限值时，将其他优化小区与分流目标小区的Qoffset2调整为闲时配置；
    当优化小区负载高于第一预设门限值时，不调整所述分流目标小区与所述优化小区的Qoffset2。
  12. 根据权利要求10至11所述装置，其中，所述所述忙时配置包括：使用户能够从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值；
    所述忙时配置包括：使用户不能从优化小区分流到分流目标小区时的重选参数Qoffset2值、以及同频测量门限值(sintrasearch)/异频测量门限值(sintersearch)值。
  13. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令用于执行权利要求1至6任一项所述的负载均衡方法。
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