WO2016011752A1 - 负荷均衡方法及装置 - Google Patents

负荷均衡方法及装置 Download PDF

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Publication number
WO2016011752A1
WO2016011752A1 PCT/CN2014/092073 CN2014092073W WO2016011752A1 WO 2016011752 A1 WO2016011752 A1 WO 2016011752A1 CN 2014092073 W CN2014092073 W CN 2014092073W WO 2016011752 A1 WO2016011752 A1 WO 2016011752A1
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Prior art keywords
load balancing
frequency
frequency point
measurement
preset threshold
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PCT/CN2014/092073
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English (en)
French (fr)
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姬利军
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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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular to a load balancing method and apparatus.
  • FIG. 1 is a schematic diagram of a load balancing processing method according to the related art, such as As shown in FIG. 1, the general processing flow of load balancing is to determine whether or not load balancing needs to be performed when a load balancing period arrives. When the radio load of the serving cell reaches a certain threshold, the absolute available capacity of the serving cell and all neighboring cells is compared. If the available capacity remaining in the serving cell is the least, it is considered that load balancing can be performed.
  • the UE selects and selects a resource that occupies a large number of physical resource blocks (PRBs) and a UE with a lower priority.
  • the UE sends all the frequency points of the neighboring cells to perform A4 event measurement, and the UE reports the corresponding measurement.
  • the target cell list order is determined, and finally the UE switches to the lightest neighboring area to achieve the purpose of reducing the load.
  • the coverage of the frequency point is not distinguished, and the load situation of the corresponding neighboring area at each frequency point is not considered.
  • the UE reports the measurement report according to the signal quality of the neighboring area, and the measurement report carries
  • the load condition of the neighboring area may not meet the conditions, or the load itself is in a heavier state, and the overall balance of the system cannot be achieved.
  • the UE issues a lot of different frequency points, the UE needs to perform measurement of each frequency point, and there is more power consumption, which is not conducive to the continuous operation of the UE.
  • the neighboring area under the frequency measurement reported by the UE may not reach the condition of light load, which is not conducive to the overall load balancing of the system; on the other hand, the inter-frequency measurement of the UE to increase the frequency will increase. Power loss is not conducive to continuous operation of the UE.
  • the embodiments of the present invention provide a load balancing method and apparatus to solve at least the problem that the load balancing scheme in the related art increases the power consumption of the UE.
  • a load balancing method including: determining that a serving cell needs to perform load balancing; selecting a user equipment UE that performs load balancing according to a preset condition; and following a priority of a frequency point from high to low Determining whether there is a neighboring area with a load rate lower than a preset threshold at each frequency point, and selecting a frequency point of the first N neighboring areas with a load rate lower than a preset threshold as a target frequency point, and sending the measurement to the UE, where N is a positive integer; selecting a target handover cell of the UE according to the measurement result reported by the UE and performing handover.
  • the method further includes: setting a priority for the frequency points of all the neighboring areas, wherein the setting of the coverage is compared. Good frequency points have higher priority.
  • the priority of each frequency point is determined by the priority of the frequency point.
  • the neighboring area with the load rate less than the preset threshold is determined according to the priority of the frequency point, and the priority of each frequency point is determined according to the priority of the frequency point.
  • the load rate in the direction of load balancing is less than the neighboring area of the preset threshold.
  • the method further includes: determining whether the number of times that the load balancing needs to be performed satisfies the first preset threshold on the premise that the UE switching based on the load balancing does not occur; if yes, All the frequency points except the unavailable frequency point are sent to the UE as the target frequency point for measurement; and the target switching cell of the UE is selected according to the measurement result reported by the UE.
  • the method further includes: determining whether the number of times of performing load balancing meets a second preset threshold; According to the priority of the frequency point, it is determined from the highest to the low frequency whether there is a neighboring area whose load rate is less than the preset threshold, and the top N frequency points of the neighboring area with the load rate less than the preset threshold are selected as the target.
  • the UE performs measurement on the frequency point; and selects a target handover cell of the UE according to the measurement result reported by the UE.
  • the number of times that the load balancing needs to be determined is reset to 0; and/or, In the case where a load balancing based UE handover occurs, the number of times the load balancing needs to be determined is reset to zero.
  • Selecting the first N frequency points of the neighboring cell with the load rate less than the preset threshold as the target frequency is sent to the UE for measurement, and the first N load rate is selected among the frequency points corresponding to the frequency band supported by the UE.
  • the frequency of the neighboring cell that is smaller than the preset threshold is sent to the UE as a target frequency for measurement.
  • a load balancing apparatus including: a determining module, configured to determine that a serving cell needs to perform load balancing; and a selecting module, configured to select a user equipment UE that performs load balancing according to a preset condition;
  • the sending module is configured to determine, according to the priority of the frequency point, whether there is a neighboring area whose load rate is less than a preset threshold, and select the first N neighboring areas whose load rate is less than the preset threshold.
  • the frequency point is sent to the UE as a target frequency for measurement, and N is a positive integer.
  • the load balancing module is configured to select a target handover cell of the UE according to the measurement result reported by the UE and perform handover.
  • the device further includes: a setting module, configured to set a priority for frequency points of all neighboring regions, wherein a frequency point with a better coverage condition is set to have a higher priority.
  • a setting module configured to set a priority for frequency points of all neighboring regions, wherein a frequency point with a better coverage condition is set to have a higher priority.
  • the sending module includes: a determining unit, configured to determine, according to the priority of the frequency point, whether there is a neighboring area at a load rate that is less than a preset threshold in a direction in which load balancing is required.
  • the device further includes: a statistic module, configured to determine whether the number of times that load balancing needs to be performed satisfies a first preset threshold on a premise that the load balancing based UE handover does not occur; the sending module is further configured to If the result of the statistic module is YES, all frequency points except for the unavailable frequency point are sent to the UE as the target frequency point for measurement; the load balancing module is further configured. Selecting a target handover cell of the UE according to the measurement result reported by the UE.
  • the serving cell needs to perform load balancing; the UE that performs load balancing is selected according to the preset condition; and the priority of the frequency point is determined from high to low, and whether the load rate is lower than the preset threshold at each frequency point.
  • the neighboring cell and selects the frequency of the first N neighboring cells whose load rate is less than the preset threshold as the target frequency, and sends the measurement to the UE, where N is a positive integer; and the selected result is selected according to the measurement result reported by the UE.
  • the method of the UE switching the cell and performing the handover solves the problem that the load balancing scheme in the related art increases the power consumption of the UE.
  • the network administrator can flexibly adjust according to the network coverage.
  • the target frequency of load balancing achieves better load balancing effect, reduces the power consumption of the UE in the inter-frequency measurement, and enhances the endurance capability.
  • FIG. 1 is a schematic diagram of a load balancing processing method according to the related art
  • FIG. 2 is a flow chart of a load balancing method according to an embodiment of the present invention.
  • FIG. 3 is a block diagram showing the structure of a load balancing apparatus according to an embodiment of the present invention.
  • FIG. 4 is a flow chart showing the overall process of load balancing according to a preferred embodiment of the present invention.
  • FIG. 2 is a flowchart of a load balancing method according to an embodiment of the present invention. As shown in FIG. 2, the method includes the following steps:
  • Step S202 determining that the serving cell needs to perform load balancing
  • Step S204 selecting a UE that performs load balancing according to a preset condition
  • Step S206 judging whether there is a neighboring area with a load rate less than a preset threshold in each frequency point according to the priority of the frequency point, and selecting a frequency point of the first N neighboring areas with a load rate less than a preset threshold as The target frequency is sent to the UE for measurement, where N is a positive integer;
  • Step S208 Select a target handover cell of the UE according to the measurement result reported by the UE, and perform handover.
  • the UE after selecting the UE for load balancing, according to the priority of the frequency point, it is determined in order from the highest to the low, whether there is a neighboring area whose load rate is less than the preset threshold, and the first N are selected.
  • the frequency of the neighboring cell with the load rate being less than the preset threshold is sent to the UE as the target frequency point for A4 event measurement; the target handover cell of the UE is selected according to the measurement result reported by the UE, and the handover is performed, thereby
  • the UE only needs to measure the selected N frequency points of the neighboring cells whose load rate is less than the preset threshold, and does not need to measure the frequency points of all the neighboring cells, and solves the load balancing scheme in the related art, so that the UE consumes
  • the problem of increased power in the case of ensuring continuous service of the UE, allows the network administrator to flexibly adjust the target frequency of the load balancing according to the network coverage, achieve better load balancing effect, and reduce the consumption
  • the preset condition is generally the same as the method of selecting the UE in the load balancing scheme in the related art, and is not described in detail in this embodiment.
  • the frequency points of all the neighboring cells may be pre-set with a priority, wherein the priority may be set according to a higher priority of the frequency points with better coverage.
  • the neighboring areas whose load rate is less than the preset threshold in the direction in which load balancing is required may be determined according to the priority of the frequency points from high to low.
  • the UE for load balancing after selecting the UE for load balancing according to the preset condition, it may also be determined whether the number of times that the load balancing needs to be performed satisfies the first preset threshold on the premise that the UE switching based on the load balancing does not occur (hereinafter also Recorded as PauseJudgementNum); if yes, all the frequency points except the frequency point that is not available are sent to the UE as the target frequency point for measurement; and the UE is selected according to the measurement result reported by the UE. The target switches the cell. In this way, load balancing failure due to unreasonable setting of the preset threshold of the above load rate can be avoided.
  • PauseJudgementNum the number of times that the load balancing needs to be performed satisfies the first preset threshold on the premise that the UE switching based on the load balancing does not occur
  • the number of times that load balancing needs to be performed may be counted as follows: statistics determine the number of times that load balancing needs to be performed, if a load balancing based UE occurs in the statistical process. If the handover is performed, the UE is switched based on the load balancing. If the number of times of the statistics reaches the first preset threshold, all the frequency points except the unavailable frequency point are used. The target frequency is sent to the UE for measurement, and the target handover cell of the UE is selected according to the measurement result reported by the UE.
  • the number of times of load balancing meets the second preset threshold ( It is also recorded as PauseExcuteNum) in the following; if yes, it is determined according to the priority of the frequency point from high to low, whether there is a neighboring area whose load rate is less than the preset threshold under each frequency point, and the top N existing load rate is less than the pre-selection.
  • the frequency of the neighboring area of the threshold is sent to the UE as a target frequency for measurement; and the target handover cell of the UE is selected according to the measurement result reported by the UE.
  • the number of times that the load balancing needs to be determined is reset to 0; Or, in the case where a load balancing based UE handover occurs, the number of times the load balancing needs to be determined is reset to zero.
  • the frequency may be selected in the following manner: Among the frequency points corresponding to the frequency band supported by the UE, the first N frequency points of the neighboring area with the load rate less than the preset threshold are sent to the UE for measurement.
  • a load balancing device is further provided in the embodiment, and the device is configured to implement the above-mentioned embodiments and preferred embodiments, and the description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a structural block diagram of a load balancing apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes a determining module 32, a selecting module 34, a sending module 36, and a load balancing module 38. Details of each module are described below. Description:
  • the determining module 32 is configured to determine that the serving cell needs to perform load balancing; the selecting module 34 is connected to the determining module 32, and is configured to select a UE for load balancing according to a preset condition; the sending module 36 is connected to the selecting module 34, and is set to According to the priority of the frequency point, it is determined whether there is a neighboring area whose load rate is less than the preset threshold under each frequency point, and the first N frequency points of the neighboring area with the load rate less than the preset threshold are selected as the target frequency point.
  • the UE is sent to the UE for measurement, and N is a positive integer.
  • the load balancing module 38 is connected to the sending module 36, and is configured to select a target switching cell of the UE according to the measurement result reported by the UE and perform handover.
  • the device may further include: a setting module, connected to the sending module 36, configured to set a priority for frequency points of all neighboring cells, wherein a frequency point with a better coverage condition is set to have a higher priority.
  • a setting module connected to the sending module 36, configured to set a priority for frequency points of all neighboring cells, wherein a frequency point with a better coverage condition is set to have a higher priority.
  • the sending module 36 may include: a determining unit, configured to determine, according to the priority of the frequency point, whether the load rate is less than a preset threshold in a direction in which load balancing is required, in each frequency point. Neighborhood.
  • the device may further include: a statistic module, connected to the sending module 36, configured to determine whether the number of times that load balancing needs to be performed satisfies the first preset threshold on the premise that the load balancing based UE handover does not occur.
  • the sending module 36 is further configured to: when the determination result of the statistics module is yes, send all frequency points except frequency points that are not available as the target frequency point to the The UE performs measurement; the load balancing module 38 is further configured to select a target handover cell of the UE according to the measurement result reported by the UE.
  • an LTE (Long Term Evolution) mobile communication system is taken as an example to provide a measurement-based load balancing method and apparatus.
  • the method sets a configurable priority for each frequency point, and the priority reflects the coverage of each frequency point in the network.
  • a well-covered frequency priority setting is higher, and a lower-frequency priority setting is lower.
  • the priorities of the different frequency points can be the same, and the frequency points with the higher priority are preferentially delivered.
  • the frequency with the priority of 0 is not considered for delivery.
  • the neighboring cell load situation at the highest priority frequency is counted before the measurement frequency is sent to the UE, and it is determined whether at least one of the neighboring cells has a load rate less than the corresponding LTE in the direction in which load balancing is required.
  • the neighboring cell overload threshold is selected and one or several (N) frequency points satisfying the condition are selected as the target frequency point and sent to the UE for measurement (Optimized Method mode).
  • the higher priority frequency does not meet the above conditions, then the same processing is performed considering the second highest priority frequency. If the frequency is still not selected, the A4 measurement is not sent to the UE.
  • the PauseJudgmentNum In order to avoid the coverage of the selected frequency point signal in the area where the UE is located, after the PauseJudgmentNum needs to perform load balancing, if the base station has not been subjected to the load balancing based handover of the UE, then the frequency is changed to all the priorities are not 0. The points are all issued in the way of A4 measurement (ie Normal Method). After the PauseExcuteNum needs to perform load balancing, it is restored to the original mode (ie, the optimized method, that is, the load balancing method in the above embodiment).
  • the above carrier frequency priority, PauseJudgmentNum and PauseExcuteNum are configurable.
  • Step 1 The eNB load balancing function is enabled, the load balancing period is reached, and the load of a certain cell in the eNB reaches the threshold. After comparing the absolute available cell capacity with all the neighboring cells, if the load of the cell is the highest, load balancing needs to be performed.
  • Step 2 Determine whether it is in the Normal Method state, and if yes, determine whether the load balancing execution number is greater than or equal to PauseExcuteNum, and the result is also converted to the Optimized Method state, restarting the statistical load balancing execution times and generating load balancing based The number of UE handovers; otherwise, the method is continued and corresponding statistics are performed.
  • the load balancing time exceeds PauseJudgmentNum and the eNB does not have UE load balancing based on load balancing, it will be converted to the Normal Method state and the statistics load balancing execution number will be restarted. If the load balancing based UE switching occurs, The number of load balancing executions and the number of UE switching times based on load balancing are restarted. In addition, the method is continued and corresponding statistics are performed.
  • Step 3 The decision needs to use the Optimized Method to perform statistical analysis on the frequency of the neighboring cell of the cell, starting from the frequency point with the highest frequency priority, and observing whether the load rate of at least one neighboring zone in the neighboring zone corresponding to the frequency point is lower than Neighborhood overload threshold. If the highest priority frequency point satisfies such a condition, the frequency point is sent to the selected UE for A4 measurement; if the highest priority frequency point does not satisfy the condition, then the next high priority frequency point is continued. select. In short, the frequency point that satisfies the condition can be selected in the higher priority frequency point, that is, stopped.
  • the selected frequency point is sent to the UE to perform measurement reconfiguration for A4 measurement.
  • Step 4 After receiving the UE measurement report, the base station performs load reduction processing, and switches the UE to the target neighboring area with the lowest load in the measurement report, and the number of UE switching times based on load balancing increases by one.
  • the load balancing function is optimized on the basis of the related technology, and the network administrator can flexibly adjust the target frequency of the load balancing according to the network coverage condition while ensuring the continuous service of the UE.
  • the network administrator can flexibly adjust the target frequency of the load balancing according to the network coverage condition while ensuring the continuous service of the UE.
  • FIG. 4 is a schematic diagram of a whole process of load balancing according to a preferred embodiment of the present invention. As shown in FIG. 4, the overall process of load balancing in the preferred embodiment includes five cases (case 1-5).
  • the first step the load balancing period of eNB1 arrives, and the load situation of a certain serving cell and its neighboring area is compared, and it is judged that load balancing needs to be performed.
  • the second step According to the statistical value judgment, in the previous JudgmentNum execution load balancing, there is a load balancing based handover of the UE. This load balancing execution is still performed according to the Optimized Method state.
  • Step 3 Select the measurement frequency point: the adjacent area with the load below the threshold is selected at the highest priority neighbor frequency, and the frequency is selected.
  • the fourth step the eNB1 sends the A4 measurement configuration of the frequency to the selected UE, and the UE detects that the neighboring area reaches the reporting threshold and reports the A4 measurement report.
  • Step 5 The base station switches to the neighboring cell list with the lowest load, according to the neighboring area load level in the measurement report, and the UE is switched to the cell under the lowest load eNB2.
  • the first step the load balancing period of eNB1 arrives, and the load situation of a certain serving cell and its neighboring area is compared, and it is judged that load balancing needs to be performed.
  • the second step According to the statistical value, the load balancing execution is still performed according to the optimizedMethod state.
  • Step 3 Select the measurement frequency point: the adjacent area with the load below the threshold is selected at the highest priority neighbor frequency, and the frequency is selected.
  • the fourth step the eNB1 sends the A4 measurement configuration of the frequency to the selected UE, and the UE detects that the neighboring area reaches the reporting threshold and reports the A4 measurement report.
  • Step 5 The base station switches to the neighboring cell list with the lowest load, according to the neighboring area load level in the measurement report, and the UE is switched to the cell under the lowest load eNB2.
  • the first step the load balancing period of eNB1 arrives, and the load situation of a certain serving cell and its neighboring area is compared, and it is judged that load balancing needs to be performed.
  • the second step According to the statistical value judgment, no load-based handover has occurred in the UE in the previous JudgmentNum execution load balancing. This load balancing execution is converted to the Normal Method state.
  • the third step: eNB1 delivers all A4 measurement configurations with the priority of 0 frequency to the selected UE.
  • the UE detects that the neighboring area reaches the reporting threshold and reports the A4 measurement report.
  • the report carries the cell under eNB2.
  • the fourth step the base station according to the measurement of the neighboring area load in the measurement report, discharges the list of neighboring areas from low to high, and the UE is switched to the cell under the eNB2 with the lowest load.
  • the first step the load balancing period of eNB1 arrives, and the load situation of a certain serving cell and its neighboring area is compared, and it is judged that load balancing needs to be performed.
  • Step 2 According to the statistical value, the number of previous load balancing has reached PauseExecuteNum times. This load balancing execution is converted to the Optimized Method state.
  • the third step selecting the measurement frequency point: the neighboring area with the load below the threshold is not present in the neighboring frequency with the highest priority, and the neighboring area with the lower load than the threshold is present under the next highest priority frequency. This high priority frequency point is selected.
  • the fourth step the eNB1 sends the A4 measurement configuration of the frequency to the selected UE, and the UE detects that the neighboring area reaches the reporting threshold and reports the A4 measurement report.
  • Step 5 The base station switches to the neighboring cell list with the lowest load, according to the neighboring area load level in the measurement report, and the UE is switched to the cell under the lowest load eNB2.
  • the first step the load balancing period of eNB1 arrives, and the load situation of a certain serving cell and its neighboring area is compared, and it is judged that load balancing needs to be performed.
  • Step 2 According to the statistical value, the number of previous load balancing is less than PauseExecuteNum. This load balancing execution is still performed according to the Normal Method state.
  • the third step: eNB1 delivers the A4 measurement configuration with the priority of 0 to the selected UE.
  • the UE detects that the neighboring area reaches the reporting threshold and reports the A4 measurement report.
  • the report carries the cell under eNB2.
  • the fourth step the eNB1 sends the A4 measurement configuration of the frequency to the selected UE, and the UE detects that the neighboring area reaches the reporting threshold and reports the A4 measurement report.
  • Step 5 The base station switches to the neighboring cell list with the lowest load, according to the neighboring area load level in the measurement report, and the UE is switched to the cell under the lowest load eNB2.
  • the measurement-based load balancing method and apparatus in the preferred embodiment are only exemplified by the LTE communication system, but are not limited thereto, as long as the method and apparatus related to the measurement-based load balancing can use the load balancing in the preferred embodiment. Program.
  • a software is provided that is configured to perform the technical solutions described in the above embodiments and preferred embodiments.
  • a storage medium in which the above software is stored, including but not limited to an optical disk, a floppy disk, a hard disk, an erasable memory, and the like.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network 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 thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the load balancing method and apparatus have the following beneficial effects: the problem that the load balancing scheme in the related art increases the power consumption of the UE, and the situation of ensuring the continuous service of the UE is achieved.
  • the network administrator can flexibly adjust the target frequency of load balancing according to the network coverage, achieve better load balancing effect, reduce the power consumption of the UE in the inter-frequency measurement, and enhance the endurance capability.

Abstract

本发明公开了一种负荷均衡方法及装置，其中，该方法包括：确定服务小区需要进行负荷均衡；根据预设条件选择进行负荷均衡的UE；按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。通过本发明，解决了相关技术中的负荷均衡方案使得UE耗电量增加的问题，在保证UE持续业务的情况下，可以令网络管理者根据网络覆盖情况灵活调整负荷均衡的目标频点，达到更好的负荷均衡效果，减少UE在异频测量上的耗电，增强续航能力。

Description

负荷均衡方法及装置 技术领域
本发明涉及通信领域，具体而言，涉及一种负荷均衡方法及装置。
背景技术
在相关技术中，基于测量的负荷均衡是通过切换走占用较多资源的用户设备(User Equipment，简称为UE)来达到降负荷的目的，图1是根据相关技术的负荷均衡处理方法示意图，如图1所示，负荷均衡的一般处理流程为：在一个负荷均衡周期到达时，进行是否需要执行负荷均衡的判断。当服务小区无线负荷达到一定的门限，将服务小区和所有邻区的绝对可用容量进行比较，如果服务小区所剩的可用容量是最少的，认为可以执行负荷均衡。然后进行UE选择，选择占用较多物理资源块(Physical Resource Block，简称为PRB)资源和优先级比较低的UE，给UE下发所有邻区的频点进行A4事件测量，UE上报相应的测量报告后，根据测量报告中携带的邻区负荷是否超过邻区过负荷门限以及负荷轻重来决定切换目标小区列表顺序，最终以UE切换到某个负荷最轻的邻区达到降负荷的目的。
该种方法在向UE下发测量时，没有区分频点的覆盖情况，并且没有考虑每个频点下对应邻区的负荷情况，UE根据邻区信号质量情况上报测量报告，测量报告中携带的邻区负荷情况有可能都不满足条件，或者负荷本身也处于较重的状态，不能达到系统整体的均衡目的。另外，对UE下发了较多的异频频点时，UE要进行各个频点的测量，会有更多的耗电，不利于UE持续工作。
综上所述，一方面UE测量上报的频点下邻区有可能都不能达到负荷较轻的条件，不利于系统整体的负荷均衡；另一方面UE做多个频点的异频测量会增加电能损耗，不利于UE持续工作。
针对相关技术中的负荷均衡方案使得UE耗电量增加的问题，目前尚未提出有效的解决方案。
发明内容
本发明实施例提供了一种负荷均衡方法及装置，以至少解决相关技术中的负荷均衡方案使得UE耗电量增加的问题。
根据本发明的一个实施例，提供了一种负荷均衡方法，包括：确定服务小区需要进行负荷均衡；根据预设条件选择进行负荷均衡的用户设备UE；按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。
在按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区之前，还包括：对所有邻区的频点设置优先级，其中，设置覆盖情况较好的频点的优先级较高。
按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区包括：按照频点的优先级从高到低依次判断各个频点下是否存在在需要进行负荷均衡的方向上负荷率小于预设门限的邻区。
在根据预设条件选择进行负荷均衡的UE之后，还包括：判断在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数是否满足第一预设阈值；如果是，则对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量；根据所述UE上报的测量结果选择所述UE的目标切换小区。
在对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量之后，还包括：判断进行负荷均衡的次数是否满足第二预设阈值；如果是，则按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量；根据所述UE上报的测量结果选择所述UE的目标切换小区。
在对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量的情况下，将确定需要进行负荷均衡的次数重置为0；和/或，在发生了基于负荷均衡的UE切换的情况下，将确定需要进行负荷均衡的次数重置为0。
选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量包括：选择所述UE支持的频段对应的频点中，前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量。
根据本发明的另一实施例，提供了一种负荷均衡装置，包括：确定模块，设置为确定服务小区需要进行负荷均衡；选择模块，设置为根据预设条件选择进行负荷均衡的用户设备UE；下发模块，设置为按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的 频点作为目标频点下发给所述UE进行测量，N为正整数；负荷均衡模块，设置为根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。
所述装置还包括：设置模块，设置为对所有邻区的频点设置优先级，其中，设置覆盖情况较好的频点的优先级较高。
所述下发模块包括：判断单元，设置为按照频点的优先级从高到低依次判断各个频点下是否存在在需要进行负荷均衡的方向上负荷率小于预设门限的邻区。
所述装置还包括：统计模块，设置为判断在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数是否满足第一预设阈值；所述下发模块，还设置为在所述统计模块的判断结果为是的情况下，对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量；所述负荷均衡模块，还设置为根据所述UE上报的测量结果选择所述UE的目标切换小区。
通过本发明实施例，采用确定服务小区需要进行负荷均衡；根据预设条件选择进行负荷均衡的UE；按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换的方式，解决了相关技术中的负荷均衡方案使得UE耗电量增加的问题，在保证UE持续业务的情况下，可以令网络管理者根据网络覆盖情况灵活调整负荷均衡的目标频点，达到更好的负荷均衡效果，减少UE在异频测量上的耗电，增强续航能力。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据相关技术的负荷均衡处理方法示意图；
图2是根据本发明实施例的负荷均衡方法的流程图；
图3是根据本发明实施例的负荷均衡装置的结构框图；
图4是根据本发明优选实施例的负荷均衡整体处理流程示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
在本实施例中，提供了一种负荷均衡方法，图2是根据本发明实施例的负荷均衡方法的流程图，如图2所示，该方法包括如下步骤：
步骤S202，确定服务小区需要进行负荷均衡；
步骤S204，根据预设条件选择进行负荷均衡的UE；
步骤S206，按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；
步骤S208，根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。
本实施例通过上述步骤，在选择出进行负荷均衡的UE后，按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行A4事件测量；根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换，从而使得UE仅需要对选择出的前N个存在负荷率小于预设门限的邻区的频点进行测量，而无需对所有邻区的频点进行测量，解决了相关技术中的负荷均衡方案使得UE耗电量增加的问题，在保证UE持续业务的情况下，可以令网络管理者根据网络覆盖情况灵活调整负荷均衡的目标频点，达到更好的负荷均衡效果，减少UE在异频测量上的耗电，增强续航能力。
其中，上述预设条件通常为占用较多资源和优先级比较低，与相关技术中的负荷均衡方案中选择UE的方式相同，在本实施例中不做赘述。
优选地，可以对所有邻区的频点预先设置优先级，其中，可以按照覆盖情况较好的频点的优先级较高的方式进行设置。
优选地，可以按照频点的优先级从高到低依次判断各个频点下是否存在在需要进行负荷均衡的方向上负荷率小于预设门限的邻区。
优选地，在根据预设条件选择进行负荷均衡的UE之后，还可以判断在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数是否满足第一预设阈值(在下文中还记为PauseJudgementNum)；如果是，则对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量；根据所述UE上报的测量结果选择所述UE的目标切换小区。通过这种方式，可以避免由于对上述负荷率的预设门限设置的不合理导致的负荷均衡失效。其中，上述在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数可以按照如下方式统计：统计确定需要进行负荷均衡的次数，如果在统计过程中发生了基于负荷均衡的UE切换，则重置该次数，如果未发生基于负荷均衡的UE切换，则在统计的该次数达到上述第一预设阈值的情况下，则对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量，并根据所述UE上报的测量结果选择所述UE的目标切换小区。
优选地，在对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量之后，还可以判断进行负荷均衡的次数是否满足第二预设阈值(在下文中还记为PauseExcuteNum)；如果是，则按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量；根据所述UE上报的测量结果选择所述UE的目标切换小区。通过上述方式，实现了相关技术中的负荷均衡方案与本实施例中的负荷均衡方案的兼容。
优选地，在对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量的情况下，将确定需要进行负荷均衡的次数重置为0；和/或，在发生了基于负荷均衡的UE切换的情况下，将确定需要进行负荷均衡的次数重置为0。
优选地，在步骤S206的选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量过程中，还可以具体按照如下方式选择频点：选择所述UE支持的频段对应的频点中，前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量。
对应于上述方法，在本实施例中还提供了一种负荷均衡装置，该装置设置为实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图3是根据本发明实施例的负荷均衡装置的结构框图，如图3所示，该装置包括确定模块32、选择模块34、下发模块36和负荷均衡模块38，下面对各个模块进行详细说明：
确定模块32，设置为确定服务小区需要进行负荷均衡；选择模块34，与确定模块32相连，设置为根据预设条件选择进行负荷均衡的UE；下发模块36，与选择模块34相连，设置为按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；负荷均衡模块38，与下发模块36相连，设置为根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。
优选地，所述装置还可以包括：设置模块，与下发模块36相连，设置为对所有邻区的频点设置优先级，其中，设置覆盖情况较好的频点的优先级较高。
优选地，所述下发模块36可以包括：判断单元，设置为按照频点的优先级从高到低依次判断各个频点下是否存在在需要进行负荷均衡的方向上负荷率小于预设门限的邻区。
优选地，所述装置还可以包括：统计模块，与下发模块36相连，设置为判断在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数是否满足第一预设阈值；所述下发模块36，还设置为在所述统计模块的判断结果为是的情况下，对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量；所述负荷均衡模块38，还设置为根据所述UE上报的测量结果选择所述UE的目标切换小区。
下面结合优选实施例进行说明，以下优选实施例结合了上述实施例及其优选实施方式。
在以下优选实施例中，以LTE(Long Term Evolution，长期演进)移动通信系统为例进行说明，提供了一种基于测量的负荷均衡方法和装置。其中，该方法对每个频点设定可配置的优先级，该优先级体现的是网络中各个频点的覆盖情况。覆盖良好的频点优先级设置较高，覆盖较差的频点优先级设置较低。不同频点的优先级可以相同，优先级高的频点优先考虑下发，优先级为0的频点不考虑下发。在向UE下发测量频点前对最高优先级频点下的邻区负荷情况进行统计，判断在这些邻区中是否至少有一个邻区在需要进行负荷均衡的方向上负荷率小于相应的LTE邻小区过负荷门限，选择满足条件的一个或几个(N个)频点作为目标频点下发给UE进行测量(Optimized Method方式)。
如果较高优先级的频点无法满足上述条件，那么考虑次高优先级的频点进行同样的处理，如果仍然没有选出频点，那么就不下发A4测量给UE。
为了避免UE所处的区域所选择的频点信号覆盖不好，统计PauseJudgmentNum次需要执行负荷均衡后，如果基站一直没有UE发生基于负荷均衡的切换，那么转换为将所有优先级不为0的频点都下发A4测量的方式(即Normal Method)进行。在PauseExcuteNum次需要执行负荷均衡后，再恢复成原来的方式(即Optimized Method，也即上述实施例中的负荷均衡方式)。
其中，上述载频优先级，PauseJudgmentNum和PauseExcuteNum都是可以配置的。
本优选实施例所述的基于测量的负荷均衡方法和装置，其处理分为以下几个步骤：
步骤一、eNB负荷均衡功能打开，负荷均衡周期到达，eNB下某个小区负荷达到门限，和所有邻区比较绝对可用小区容量后，如果该小区负荷最高，需要执行负荷均衡。
步骤二、判断是否处于Normal Method状态，结果为是则进而判断是否有负荷均衡执行次数大于等于PauseExcuteNum，结果也为是那么转换为Optimized Method状态，重新开始统计负荷均衡执行次数和发生基于负荷均衡的UE切换次数；否则继续执行该种方法和进行相应统计。
如果处于Optimized Method状态，执行负荷均衡次数超过PauseJudgmentNum，并且eNB没有UE发生基于负荷均衡的UE切换，将转换为Normal Method状态，重新开始统计负荷均衡执行次数；如果发生过基于负荷均衡的UE切换，负荷均衡执行次数和发生基于负荷均衡的UE切换次数都重新开始统计；除此以外，继续执行该种方法和进行相应统计。
步骤三、判决需要使用Optimized Method，对该小区邻区频点进行统计分析，从频点优先级最高的频点开始，观察该频点对应邻区中是否至少有一个邻区的负荷率低于邻区过负荷门限。如果最高优先级的频点满足这样的条件，则向选择的UE下发这些频点进行A4测量；如果最高优先级的频点中没有满足条件的，那么在次高优先级频点中继续进行选择。总之，在较高优先级的频点中能选出满足条件的频点，即停止。
判决需要使用Normal Method，将所有优先级不为0的频点选定。
将选定的频点给UE下发测量重配进行A4测量。
步骤四、基站收到UE测量报告后，进行降负荷处理，将UE切换到测量报告中负荷最低的目标邻区，发生基于负荷均衡的UE切换次数加1。
通过本优选实施例中的负荷均衡方法，在相关技术的基础上，优化了负荷均衡功能，在保证UE持续业务的情况下，可以令网络管理者根据网络覆盖情况灵活调整负荷均衡的目标频点，达到更好的负荷均衡效果，减少UE在异频测量上的耗电，增强续航能力。
图4是根据本发明优选实施例的负荷均衡整体处理流程示意图，如图4所示，本优选实施例中的负荷均衡整体处理流程包括5种情况(case 1-5)
实施例1：
当前处于Optimized Method状态，在JudgmentNum次执行负荷均衡中有UE发生基于负荷均衡的切换如图4中case 1所示。
第一步：eNB1的负荷均衡周期到达，对比某个服务小区和其邻区负荷情况，判断需要执行负荷均衡。
第二步：根据统计值判断，在之前JudgmentNum次执行负荷均衡中有UE发生过基于负荷均衡的切换。本次负荷均衡执行仍按照Optimized Method状态进行。
第三步：选取下发测量频点：在优先级最高的邻区频点下存在负荷低于门限的邻区，该频点被选定。
第四步：eNB1下发该频点的A4测量配置给选出的UE，UE检测到部分邻区达到上报门限，上报A4测量报告。
第五步：基站根据测量报告中邻区负荷高低，排出负荷从低到高的邻区列表，UE被切换到负荷最低的eNB2下的小区。
实施例2：
当前处于Optimized Method状态，在小于JudgmentNum次执行负荷均衡中没有UE发生基于负荷均衡的切换如图4中case 2所示。
第一步：eNB1的负荷均衡周期到达，对比某个服务小区和其邻区负荷情况，判断需要执行负荷均衡。
第二步：根据统计值判断，本次负荷均衡执行仍然按照OptimizedMethod状态进行。
第三步：选取下发测量频点：在优先级最高的邻区频点下存在负荷低于门限的邻区，该频点被选定。
第四步：eNB1下发该频点的A4测量配置给选出的UE，UE检测到部分邻区达到上报门限，上报A4测量报告。
第五步：基站根据测量报告中邻区负荷高低，排出负荷从低到高的邻区列表，UE被切换到负荷最低的eNB2下的小区。
实施例3：
当前处于Optimized Method状态，在JudgmentNum次执行负荷均衡中没有UE发生基于负荷均衡的切换如图4中case 3所示。
第一步：eNB1的负荷均衡周期到达，对比某个服务小区和其邻区负荷情况，判断需要执行负荷均衡。
第二步：根据统计值判断，在之前JudgmentNum次执行负荷均衡中没有UE发生过基于负荷均衡的切换。本次负荷均衡执行转换为Normal Method状态进行。
第三步：eNB1下发所有优先级不为0频点的A4测量配置给选出的UE，UE检测到部分邻区达到上报门限，上报A4测量报告，报告中携带eNB2下的小区。
第四步：基站根据测量报告中邻区负荷高低，排出负荷从低到高的邻区列表，UE被切换到负荷最低的eNB2下的小区。
实施例4：
当前处于Normal Method状态，在PauseExecuteNum次执行负荷均衡后，如图4中case 4所示。
第一步：eNB1的负荷均衡周期到达，对比某个服务小区和其邻区负荷情况，判断需要执行负荷均衡。
第二步：根据统计值判断，之前执行负荷均衡次数已经达到PauseExecuteNum次。本次负荷均衡执行转换为Optimized Method状态进行。
第三步：选取下发测量频点：在优先级最高的邻区频点下不存在负荷低于门限的邻区，次高优先级的邻区频点下存在负荷低于门限的邻区，该次高优先级频点被选定。
第四步：eNB1下发该频点的A4测量配置给选出的UE，UE检测到部分邻区达到上报门限，上报A4测量报告。
第五步：基站根据测量报告中邻区负荷高低，排出负荷从低到高的邻区列表，UE被切换到负荷最低的eNB2下的小区。
实施例5：
当前处于Normal Method状态，在小于PauseExecuteNum次执行负荷均衡后，如图4中case 5所示。
第一步：eNB1的负荷均衡周期到达，对比某个服务小区和其邻区负荷情况，判断需要执行负荷均衡。
第二步：根据统计值判断，之前执行负荷均衡次数小于PauseExecuteNum。本次负荷均衡执行仍然按照Normal Method状态进行。
第三步：eNB1下发所有优先级不为0频点的A4测量配置给选出的UE，UE检测到邻区达到上报门限，上报A4测量报告，报告中携带eNB2下的小区。
第四步：eNB1下发该频点的A4测量配置给选出的UE，UE检测到部分邻区达到上报门限，上报A4测量报告。
第五步：基站根据测量报告中邻区负荷高低，排出负荷从低到高的邻区列表，UE被切换到负荷最低的eNB2下的小区。
本优选实施例中基于测量的负荷均衡方法和装置只以LTE通信系统为例，但不仅限于此，只要涉及到该基于测量的负荷均衡的方法和装置均可以使用本优选实施例中的负载均衡方案。
在另外一个实施例中，还提供了一种软件，该软件设置为执行上述实施例及优选实施例中描述的技术方案。
在另外一个实施例中，还提供了一种存储介质，该存储介质中存储有上述软件，该存储介质包括但不限于光盘、软盘、硬盘、可擦写存储器等。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种负荷均衡方法及装置，具有以下有益效果：解决了相关技术中的负荷均衡方案使得UE耗电量增加的问题，达到了在保证UE持续业务的情况下，可以令网络管理者根据网络覆盖情况灵活调整负荷均衡的目标频点，达到更好的负荷均衡效果，减少UE在异频测量上的耗电，增强续航能力的效果。

Claims (11)

  1. 一种负荷均衡方法，包括：
    确定服务小区需要进行负荷均衡；
    根据预设条件选择进行负荷均衡的用户设备UE；
    按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；
    根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。
  2. 根据权利要求1所述的方法，其中，在按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区之前，还包括：
    对所有邻区的频点设置优先级，其中，设置覆盖情况较好的频点的优先级较高。
  3. 根据权利要求1所述的方法，其中，按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区包括：
    按照频点的优先级从高到低依次判断各个频点下是否存在在需要进行负荷均衡的方向上负荷率小于预设门限的邻区。
  4. 根据权利要求1所述的方法，其中，在根据预设条件选择进行负荷均衡的UE之后，还包括：
    判断在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数是否满足第一预设阈值；
    如果是，则对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量；根据所述UE上报的测量结果选择所述UE的目标切换小区。
  5. 根据权利要求4所述的方法，其中，在对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量之后，还包括：
    判断进行负荷均衡的次数是否满足第二预设阈值；
    如果是，则按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点 作为目标频点下发给所述UE进行测量；根据所述UE上报的测量结果选择所述UE的目标切换小区。
  6. 根据权利要求4所述的方法，其中，
    在对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量的情况下，将确定需要进行负荷均衡的次数重置为0；和/或，
    在发生了基于负荷均衡的UE切换的情况下，将确定需要进行负荷均衡的次数重置为0。
  7. 根据权利要求1所述的方法，其中，选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量包括：
    选择所述UE支持的频段对应的频点中，前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量。
  8. 一种负荷均衡装置，包括：
    确定模块，设置为确定服务小区需要进行负荷均衡；
    选择模块，设置为根据预设条件选择进行负荷均衡的用户设备UE；
    下发模块，设置为按照频点的优先级从高到低依次判断各个频点下是否存在负荷率小于预设门限的邻区，并选择前N个存在负荷率小于预设门限的邻区的频点作为目标频点下发给所述UE进行测量，N为正整数；
    负荷均衡模块，设置为根据所述UE上报的测量结果选择所述UE的目标切换小区并进行切换。
  9. 根据权利要求8所述的装置，其中，所述装置还包括：
    设置模块，设置为对所有邻区的频点设置优先级，其中，设置覆盖情况较好的频点的优先级较高。
  10. 根据权利要求8所述的装置，其中，所述下发模块包括：
    判断单元，设置为按照频点的优先级从高到低依次判断各个频点下是否存在在需要进行负荷均衡的方向上负荷率小于预设门限的邻区。
  11. 根据权利要求8所述的装置，其中，所述装置还包括：
    统计模块，设置为判断在未发生基于负荷均衡的UE切换的前提下，确定需要进行负荷均衡的次数是否满足第一预设阈值；
    所述下发模块，还设置为在所述统计模块的判断结果为是的情况下，对除不可用的频点之外的所有频点都作为所述目标频点下发给所述UE进行测量；
    所述负荷均衡模块，还设置为根据所述UE上报的测量结果选择所述UE的目标切换小区。
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