CN105282791A - Load balancing method and device - Google Patents
Load balancing method and device Download PDFInfo
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- CN105282791A CN105282791A CN201410362376.7A CN201410362376A CN105282791A CN 105282791 A CN105282791 A CN 105282791A CN 201410362376 A CN201410362376 A CN 201410362376A CN 105282791 A CN105282791 A CN 105282791A
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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
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- 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
Abstract
The invention discloses a load balancing method and device. The method includes the steps of: determining that a serving cell needs to perform load balancing; selecting UE that performs load balancing according preset conditions; judging whether an adjacent cell whose load rate is smaller than a preset threshold exists under each frequency point according to the priority of frequency points in sequence from high to low, and selecting the previous N frequency points where adjacent cells whose load rates are smaller than the preset threshold as target frequency points to be issued to the UE for measurement, wherein N is a positive integer; and selecting a target switching cell of the UE according to a measurement result reported by the UE and performing switching. Through the load balancing method provided by the invention, the problem that load balancing schemes in related technologies enable power consumption of UE to be increased is solved, and can enable a network administrator to flexibly adjust the target frequency point of load balancing according to a network coverage condition while ensuring continuous services of the UE, thereby achieving a relatively good load balancing effect, reducing power consumption of the UE in pilot frequency measurement, and enhancing a cruising ability.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of load equalization method and device.
Background technology
In the related, the subscriber equipment (UserEquipment walking to take compared with multiple resource by switching based on the load balancing of measuring, referred to as UE) reach the object of load down, Fig. 1 is the load equilibrium processing method schematic diagram according to correlation technique, as shown in Figure 1, the general handling process of load balancing is: when a load balancing cycle arrives, carry out the judgement the need of performing load balancing.When Serving cell reaches certain thresholding without specific electric load, the absolute active volume of Serving cell and all adjacent areas is compared, if the remaining active volume in Serving cell is minimum, thinks and can perform load balancing.Then UE selection is carried out, selection takies more Physical Resource Block (PhysicalResourceBlock, referred to as PRB) resource and the lower UE of priority ratio, the frequency issuing all adjacent areas to UE carries out A4 affair, after UE reports corresponding measurement report, whether exceed adjacent area overload thresholding according to the neighboring cell load of carrying in measurement report and load weight decides switching target small area tab sequential, be finally switched to UE the object that the lightest adjacent area of certain load reaches load down.
This kind of method is when to UE sending measuring, do not distinguish the coverage condition of frequency, and the load condition of corresponding adjacent area under not considering each frequency, UE is according to neighboring cell signal quality situation reporting measurement reports, the neighboring cell load situation of carrying in measurement report does not likely satisfy condition, or load itself is also in heavier state, the balanced object of entire system can not be reached.In addition, when having issued more alien frequencies frequency to UE, UE will carry out the measurement of each frequency, has more power consumption, is unfavorable for UE continuous firing.
In sum, under the frequency that one side UE measurement reports, adjacent area likely all can not reach the lighter condition of load, is unfavorable for the load balancing of entire system; The different-frequency measure that another aspect UE does multiple frequency can increase electric energy loss, is unfavorable for UE continuous firing.
For the problem that the load balancing scheme in correlation technique makes UE power consumption increase, at present effective solution is not yet proposed.
Summary of the invention
For the problem that the load balancing scheme in correlation technique makes UE power consumption increase, the invention provides a kind of load equalization method and device, at least to solve the problem.
According to an aspect of the present invention, provide a kind of load equalization method, comprising: determine that Serving cell needs to carry out load balancing; The user equipment (UE) of load balancing is carried out according to pre-conditioned selection; The adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer; Select the target handover cell of described UE according to the measurement result that described UE reports and switch.
Preferably, whether exist before load factor is less than the adjacent area of pre-determined threshold under the priority according to frequency judges each frequency from high to low successively, also comprise: to the frequency point setting priority of all adjacent areas, wherein, the priority arranging the good frequency of coverage condition is higher.
Preferably, whether there is the adjacent area that load factor is less than pre-determined threshold under judging each frequency from high to low successively according to the priority of frequency to comprise: whether there is load factor on the direction needing to carry out load balancing under judging each frequency from high to low successively according to the priority of frequency and be less than the adjacent area of pre-determined threshold.
Preferably, after the UE carrying out load balancing according to pre-conditioned selection, also comprise: judge do not occurring under the prerequisite switched based on the UE of load balancing, determine whether the number of times needing to carry out load balancing meets the first predetermined threshold value; If so, then be all handed down to described UE as described target frequency to all frequencies except disabled frequency to measure; The measurement result reported according to described UE selects the target handover cell of described UE.
Preferably, after all frequencies except disabled frequency being all handed down to described UE as described target frequency and measuring, also comprise: whether the number of times judging to carry out load balancing meets the second predetermined threshold value; If, whether there is the adjacent area that load factor is less than pre-determined threshold under then judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures; The measurement result reported according to described UE selects the target handover cell of described UE.
Preferably, when to all frequencies except disabled frequency all as described target frequency be handed down to described UE measure, the number of times determining to need to carry out load balancing is reset to 0; And/or, when there occurs the UE switching based on load balancing, the number of times determining to need to carry out load balancing is reset to 0.
Preferably, select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency to carry out measurement and comprises: in the frequency that the frequency range selecting described UE to support is corresponding, and top n exists frequency that load factor is less than the adjacent area of pre-determined threshold and is handed down to described UE as target frequency and measures.
According to a further aspect in the invention, provide a kind of load balancing device, comprising: determination module, for determining that Serving cell needs to carry out load balancing; Select module, for carrying out the user equipment (UE) of load balancing according to pre-conditioned selection; Issue module, the adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively for the priority according to frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer; Load balancing module, the measurement result for reporting according to described UE is selected the target handover cell of described UE and is switched.
Preferably, described device also comprises: arrange module, and for the frequency point setting priority to all adjacent areas, wherein, the priority arranging the good frequency of coverage condition is higher.
Preferably, issue module described in comprise: whether judging unit, exist load factor on the direction needing to carry out load balancing and be less than the adjacent area of pre-determined threshold under the priority according to frequency judges each frequency from high to low successively.
Preferably, described device also comprises: statistical module, is not occurring under the prerequisite switched based on the UE of load balancing for judging, determines whether the number of times needing to carry out load balancing meets the first predetermined threshold value; Describedly issue module, also for when the judged result of described statistical module is for being, all as described target frequency, described UE being handed down to all frequencies except disabled frequency and measuring; Described load balancing module, the measurement result also for reporting according to described UE selects the target handover cell of described UE.
By the present invention, adopt and determine that Serving cell needs to carry out load balancing; The UE of load balancing is carried out according to pre-conditioned selection; The adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer; The measurement result reported according to described UE is selected the target handover cell of described UE and is carried out the mode that switches, the problem that the load balancing scheme solved in correlation technique makes UE power consumption increase, when ensureing UE sustained traffic, network manager can be made according to the target frequency of the flexible Load adjustment equilibrium of network coverage situation, reach better load balancing effect, reduce the power consumption of UE on different-frequency measure, strengthen flying power.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the load equilibrium processing method schematic diagram according to correlation technique;
Fig. 2 is the flow chart of the load equalization method according to the embodiment of the present invention;
Fig. 3 is the structured flowchart of the load balancing device according to the embodiment of the present invention;
Fig. 4 is the schematic flow sheet of load balancing disposed of in its entirety according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
In the present embodiment, provide a kind of load equalization method, Fig. 2 is the flow chart of the load equalization method according to the embodiment of the present invention, and as shown in Figure 2, the method comprises the steps:
Step S202, determines that Serving cell needs to carry out load balancing;
Step S204, carries out the UE of load balancing according to pre-conditioned selection;
Step S206, the adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer;
Step S208, selects the target handover cell of described UE according to the measurement result that described UE reports and switches.
The present embodiment passes through above-mentioned steps, after selecting the UE carrying out load balancing, whether there is the adjacent area that load factor is less than pre-determined threshold under judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency carries out A4 affair, select the target handover cell of described UE according to the measurement result that described UE reports and switch, thus make UE only need to there is to the top n selected the frequency that load factor is less than the adjacent area of pre-determined threshold to measure, and without the need to measuring the frequency of all adjacent areas, the problem that the load balancing scheme solved in correlation technique makes UE power consumption increase, when ensureing UE sustained traffic, network manager can be made according to the target frequency of the flexible Load adjustment equilibrium of network coverage situation, reach better load balancing effect, reduce the power consumption of UE on different-frequency measure, strengthen flying power.
Wherein, be above-mentionedly pre-conditionedly generally that to take comparatively multiple resource and priority ratio lower, select the mode of UE identical with the load balancing scheme in correlation technique, do not repeat in the present embodiment.
Preferably, priority can be pre-set to the frequency of all adjacent areas, wherein, can arrange according to the mode that the priority of the good frequency of coverage condition is higher.
Preferably, whether there is load factor on the direction needing to carry out load balancing under each frequency can being judged from high to low successively according to the priority of frequency and be less than the adjacent area of pre-determined threshold.
Preferably, after the UE carrying out load balancing according to pre-conditioned selection, can also judge do not occurring under the prerequisite switched based on the UE of load balancing, determine whether the number of times needing to carry out load balancing meets the first predetermined threshold value (being also designated as PauseJudgementNum hereinafter); If so, then be all handed down to described UE as described target frequency to all frequencies except disabled frequency to measure; The measurement result reported according to described UE selects the target handover cell of described UE.In this way, the unreasonable load balancing caused owing to arranging the pre-determined threshold of above-mentioned load factor can be avoided to lose efficacy.Wherein, above-mentionedly do not occurring under the prerequisite switched based on the UE of load balancing, determine that the number of times needing to carry out load balancing can be added up in the following manner: statistics determines the number of times needing to carry out load balancing, if the UE that there occurs in statistic processes based on load balancing switches, then reset this number of times, if the UE do not occurred based on load balancing switches, then when this number of times added up reaches above-mentioned first predetermined threshold value, then all be handed down to described UE as described target frequency to all frequencies except disabled frequency to measure, and the target handover cell of described UE is selected according to the measurement result that described UE reports.
Preferably, after all frequencies except disabled frequency being all handed down to described UE as described target frequency and measuring, can also judge whether the number of times carrying out load balancing meets the second predetermined threshold value (being also designated as PauseExcuteNum hereinafter); If, whether there is the adjacent area that load factor is less than pre-determined threshold under then judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures; The measurement result reported according to described UE selects the target handover cell of described UE.By the way, the compatibility of the load balancing scheme in correlation technique and the load balancing scheme in the present embodiment is achieved.
Preferably, when to all frequencies except disabled frequency all as described target frequency be handed down to described UE measure, the number of times determining to need to carry out load balancing is reset to 0; And/or, when there occurs the UE switching based on load balancing, the number of times determining to need to carry out load balancing is reset to 0.
Preferably, there is in the selection top n of step S206 frequency that load factor is less than the adjacent area of pre-determined threshold to be handed down to described UE as target frequency and to carry out in measuring process, specifically can also select frequency in the following manner: in the frequency that the frequency range selecting described UE to support is corresponding, there is frequency that load factor is less than the adjacent area of pre-determined threshold and be handed down to described UE as target frequency and measure in top n.
Corresponding to said method, additionally provide a kind of load balancing device in the present embodiment, this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, term " module " can realize the software of predetermined function and/or the combination of hardware.Although the device described by following examples preferably realizes with software, hardware, or the realization of the combination of software and hardware also may and conceived.
Fig. 3 is the structured flowchart of the load balancing device according to the embodiment of the present invention, and as shown in Figure 3, this device comprises determination module 32, selects module 34, issues module 36 and load balancing module 38, is described in detail below to modules:
Determination module 32, for determining that Serving cell needs to carry out load balancing; Select module 34, be connected with determination module 32, for carrying out the UE of load balancing according to pre-conditioned selection; Issue module 36, be connected with selection module 34, the adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively for the priority according to frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer; Load balancing module 38, and issues module 36 and is connected, and the measurement result for reporting according to described UE is selected the target handover cell of described UE and switched.
Preferably, described device can also comprise: arrange module, and issues module 36 and is connected, and for the frequency point setting priority to all adjacent areas, wherein, the priority arranging the good frequency of coverage condition is higher.
Preferably, issue module 36 described in can comprise: whether judging unit, exist load factor on the direction needing to carry out load balancing and be less than the adjacent area of pre-determined threshold under the priority according to frequency judges each frequency from high to low successively.
Preferably, described device can also comprise: statistical module, and issues module 36 and is connected, and occurring under the prerequisite switched based on the UE of load balancing, determining whether the number of times needing to carry out load balancing meets the first predetermined threshold value for judging; Describedly issue module 36, also for when the judged result of described statistical module is for being, all as described target frequency, described UE being handed down to all frequencies except disabled frequency and measuring; Described load balancing module 38, the measurement result also for reporting according to described UE selects the target handover cell of described UE.
Be described below in conjunction with preferred embodiment, following preferred embodiment combines above-described embodiment and preferred implementation thereof.
In following preferred embodiment, be that example is described with LTE (LongTermEvolution, Long Term Evolution) mobile communication system, provide a kind of load equalization method based on measurement and device.Wherein, the method sets configurable priority to each frequency, and what this priority embodied is the coverage condition of each frequency in network.Covering good frequency priority arranges higher, covers poor frequency priority and arranges lower.The priority of different frequent points can be identical, and the frequency that priority is high is paid the utmost attention to and issued, priority be 0 frequency do not consider to issue.Adding up the neighboring cell load situation under limit priority frequency before UE sending measuring frequency, judge in these adjacent areas, whether have at least adjacent area load factor on the direction needing to carry out load balancing to be less than corresponding LTE adjacent cell overload thresholding, select one or several (N number of) frequency satisfied condition to be handed down to UE as target frequency and carry out measuring (OptimizedMethod mode).
If the frequency of higher priority cannot meet above-mentioned condition, so consider that the frequency of time high priority carries out same process, if still do not select frequency, so just do not issue A4 and measure to UE.
In order to avoid the frequency quorum sensing inhibitor selected by the region residing for UE is bad, add up after needing to perform load balancing for PauseJudgmentNum time, occur based on the switching of load balancing if base station never has UE, be so converted to all priority be not 0 frequency all issue the mode (i.e. NormalMethod) that A4 measures and carry out.After needing to perform load balancing at PauseExcuteNum time, then revert to original mode (i.e. OptimizedMethod is also the load balancing mode in above-described embodiment).
Wherein, above-mentioned carrier frequency priority, PauseJudgmentNum and PauseExcuteNum can configure.
The load equalization method based on measurement described in this preferred embodiment and device, its process is divided into following step:
Step one, eNB load balancing function are opened, and the load balancing cycle arrives, and under eNB, certain cell load reaches thresholding, and after the capacity of more absolute available cell, all adjacent areas, if this cell load is the highest, need to perform load balancing.
Step 2, judge whether to be in NormalMethod state, result for being, and then has judged whether that load balancing performs number of times and is more than or equal to PauseExcuteNum, result, also for being so be converted to OptimizedMethod state, restarting to add up load balancing and performing number of times and the UE switching times occurred based on load balancing; Otherwise continue perform this kind of method and carry out corresponding statistics.
If be in OptimizedMethod state, perform load balancing number of times more than PauseJudgmentNum, and eNB there is no UE to occur to switch based on the UE of load balancing, will be converted to NormalMethod state, restarts statistics load balancing and performs number of times; If the UE occurred based on load balancing switches, load balancing performs number of times and occurs all to restart statistics based on the UE switching times of load balancing; In addition, continue perform this kind of method and carry out corresponding statistics.
Step 3, judgement need to use OptimizedMethod, carry out statistical analysis to this adjacent area, community frequency, from the frequency that frequency priority is the highest, observe in the corresponding adjacent area of this frequency whether have the load factor of an adjacent area at least lower than adjacent area overload thresholding.If the frequency of limit priority meets such condition, then issue these frequencies to the UE selected and carry out A4 measurement; If do not satisfied condition in the frequency of limit priority, so proceed to select in secondary high priority frequency.In a word, the frequency satisfied condition can be selected in the frequency of higher priority, namely stop.
Judgement needs to use NormalMethod, is not that the frequency of 0 is selected by all priority.
Selected frequency is carried out A4 measurement to UE sending measuring reprovision.
After step 4, base station receive UE measurement report, carry out load down process, UE is switched to the target adjacent area that load in measurement report is minimum, the UE switching times occurred based on load balancing adds 1.
By the load equalization method in this preferred embodiment, on the basis of correlation technique, optimize load balancing function, when ensureing UE sustained traffic, network manager can be made according to the target frequency of the flexible Load adjustment equilibrium of network coverage situation, reach better load balancing effect, reduce the power consumption of UE on different-frequency measure, strengthen flying power.
Fig. 4 is the schematic flow sheet of load balancing disposed of in its entirety according to the preferred embodiment of the invention, and as shown in Figure 4, the load balancing disposed of in its entirety flow process in this preferred embodiment comprises 5 kinds of situations (case1-5)
Embodiment 1:
Currently be in OptimizedMethod state, to perform in load balancing for JudgmentNum time have UE occur switching based on load balancing as Fig. 4 in shown in case1.
The load balancing cycle of the first step: eNB1 arrives, and contrasts certain Serving cell and its neighboring cell load situation, and judging needs to perform load balancing.
Second step: judge according to statistical value, the switching having UE to occur based on load balancing in JudgmentNum execution load balancing before.This load balancing performs still to be carried out according to OptimizedMethod state.
3rd step: choose sending measuring frequency: there is the adjacent area of load lower than thresholding under the adjacent area frequency that priority is the highest, this frequency is selected.
The A4 that 4th step: eNB1 issues this frequency measures configuration and detects that part adjacent area reaches to the UE selected, UE and report thresholding, reports A4 measurement report.
5th step: base station is according to neighboring cell load height in measurement report, and discharge load Neighboring Cell List from low to high, UE is switched to the community under the minimum eNB2 of load.
Embodiment 2:
Currently be in OptimizedMethod state, be less than perform for JudgmentNum time in load balancing do not have UE occur switching based on load balancing as Fig. 4 in shown in case2.
The load balancing cycle of the first step: eNB1 arrives, and contrasts certain Serving cell and its neighboring cell load situation, and judging needs to perform load balancing.
Second step: judge according to statistical value, this load balancing performs still to be carried out according to OptimizedMethod state.
3rd step: choose sending measuring frequency: there is the adjacent area of load lower than thresholding under the adjacent area frequency that priority is the highest, this frequency is selected.
The A4 that 4th step: eNB1 issues this frequency measures configuration and detects that part adjacent area reaches to the UE selected, UE and report thresholding, reports A4 measurement report.
5th step: base station is according to neighboring cell load height in measurement report, and discharge load Neighboring Cell List from low to high, UE is switched to the community under the minimum eNB2 of load.
Embodiment 3:
Currently be in OptimizedMethod state, to perform in load balancing for JudgmentNum time do not have UE occur switching based on load balancing as Fig. 4 in shown in case3.
The load balancing cycle of the first step: eNB1 arrives, and contrasts certain Serving cell and its neighboring cell load situation, and judging needs to perform load balancing.
Second step: judge according to statistical value, the switching not having UE to occur based on load balancing in JudgmentNum execution load balancing before.This load balancing execution is converted to NormalMethod state and carries out.
It is not that the A4 of 0 frequency measures configuration and detects that part adjacent area reaches to the UE selected, UE and report thresholding that 3rd step: eNB1 issues all priority, reports A4 measurement report, carries the community under eNB2 in report.
4th step: base station is according to neighboring cell load height in measurement report, and discharge load Neighboring Cell List from low to high, UE is switched to the community under the minimum eNB2 of load.
Embodiment 4:
Currently be in NormalMethod state, after performing load balancing at PauseExecuteNum time, as shown in case4 in Fig. 4.
The load balancing cycle of the first step: eNB1 arrives, and contrasts certain Serving cell and its neighboring cell load situation, and judging needs to perform load balancing.
Second step: judge according to statistical value, performs load balancing number of times before and reaches PauseExecuteNum time.This load balancing execution is converted to OptimizedMethod state and carries out.
, there is the adjacent area of load lower than thresholding in the 3rd step: choose sending measuring frequency: there is not the adjacent area of load lower than thresholding under the adjacent area frequency that priority is the highest, this time high priority frequency is selected under the adjacent area frequency of secondary high priority.
The A4 that 4th step: eNB1 issues this frequency measures configuration and detects that part adjacent area reaches to the UE selected, UE and report thresholding, reports A4 measurement report.
5th step: base station is according to neighboring cell load height in measurement report, and discharge load Neighboring Cell List from low to high, UE is switched to the community under the minimum eNB2 of load.
Embodiment 5:
Currently be in NormalMethod state, after being less than and performing load balancing PauseExecuteNum time, as shown in case5 in Fig. 4.
The load balancing cycle of the first step: eNB1 arrives, and contrasts certain Serving cell and its neighboring cell load situation, and judging needs to perform load balancing.
Second step: judge according to statistical value, performs load balancing number of times before and is less than PauseExecuteNum.This load balancing performs still to be carried out according to NormalMethod state.
It is not that the A4 of 0 frequency measures configuration and detects that adjacent area reaches to the UE selected, UE and report thresholding that 3rd step: eNB1 issues all priority, reports A4 measurement report, carries the community under eNB2 in report.
The A4 that 4th step: eNB1 issues this frequency measures configuration and detects that part adjacent area reaches to the UE selected, UE and report thresholding, reports A4 measurement report.
5th step: base station is according to neighboring cell load height in measurement report, and discharge load Neighboring Cell List from low to high, UE is switched to the community under the minimum eNB2 of load.
In this preferred embodiment based on the load equalization method measured and device only for LTE communication system, but be not limited only to this, as long as relate to this method and apparatus based on the load balancing of measuring all can use load balancing scheme in this preferred embodiment.
In another embodiment, additionally provide a kind of software, this software is for performing the technical scheme described in above-described embodiment and preferred embodiment.
In another embodiment, additionally provide a kind of storage medium, store above-mentioned software in this storage medium, this storage medium includes but not limited to CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a load equalization method, is characterized in that, comprising:
Determine that Serving cell needs to carry out load balancing;
The user equipment (UE) of load balancing is carried out according to pre-conditioned selection;
The adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer;
Select the target handover cell of described UE according to the measurement result that described UE reports and switch.
2. whether method according to claim 1, is characterized in that, exist before load factor is less than the adjacent area of pre-determined threshold, also comprise under the priority according to frequency judges each frequency from high to low successively:
To the frequency point setting priority of all adjacent areas, wherein, the priority arranging the good frequency of coverage condition is higher.
3. method according to claim 1, is characterized in that, whether there is the adjacent area that load factor is less than pre-determined threshold comprise according to the priority of frequency under judging each frequency from high to low successively:
Whether there is load factor on the direction needing to carry out load balancing under judging each frequency from high to low successively according to the priority of frequency and be less than the adjacent area of pre-determined threshold.
4. method according to claim 1, is characterized in that, after the UE carrying out load balancing according to pre-conditioned selection, also comprises:
Judge do not occurring under the prerequisite switched based on the UE of load balancing, determine whether the number of times needing to carry out load balancing meets the first predetermined threshold value;
If so, then be all handed down to described UE as described target frequency to all frequencies except disabled frequency to measure; The measurement result reported according to described UE selects the target handover cell of described UE.
5. method according to claim 4, is characterized in that, after all frequencies except disabled frequency being all handed down to described UE as described target frequency and measuring, also comprises:
Judge whether the number of times carrying out load balancing meets the second predetermined threshold value;
If, whether there is the adjacent area that load factor is less than pre-determined threshold under then judging each frequency from high to low successively according to the priority of frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures; The measurement result reported according to described UE selects the target handover cell of described UE.
6. method according to claim 4, is characterized in that,
When to all frequencies except disabled frequency all as described target frequency be handed down to described UE measure, the number of times determining to need to carry out load balancing is reset to 0; And/or,
When there occurs the UE switching based on load balancing, the number of times determining to need to carry out load balancing is reset to 0.
7. method according to claim 1, is characterized in that, select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency to carry out measurement and comprise:
In the frequency that the frequency range selecting described UE to support is corresponding, there is frequency that load factor is less than the adjacent area of pre-determined threshold and be handed down to described UE as target frequency and measure in top n.
8. a load balancing device, is characterized in that, comprising:
Determination module, for determining that Serving cell needs to carry out load balancing;
Select module, for carrying out the user equipment (UE) of load balancing according to pre-conditioned selection;
Issue module, the adjacent area that load factor is less than pre-determined threshold whether is there is under judging each frequency from high to low successively for the priority according to frequency, and select top n to exist frequency that load factor is less than the adjacent area of pre-determined threshold is handed down to described UE as target frequency measures, N is positive integer;
Load balancing module, the measurement result for reporting according to described UE is selected the target handover cell of described UE and is switched.
9. device according to claim 8, is characterized in that, described device also comprises:
Arrange module, for the frequency point setting priority to all adjacent areas, wherein, the priority arranging the good frequency of coverage condition is higher.
10. device according to claim 8, is characterized in that, described in issue module and comprise:
Whether judging unit, exist load factor on the direction needing to carry out load balancing and be less than the adjacent area of pre-determined threshold under the priority according to frequency judges each frequency from high to low successively.
11. devices according to claim 8, is characterized in that, described device also comprises:
Statistical module, is not occurring under the prerequisite switched based on the UE of load balancing for judging, determines whether the number of times needing to carry out load balancing meets the first predetermined threshold value;
Describedly issue module, also for when the judged result of described statistical module is for being, all as described target frequency, described UE being handed down to all frequencies except disabled frequency and measuring;
Described load balancing module, the measurement result also for reporting according to described UE selects the target handover cell of described UE.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410362376.7A CN105282791A (en) | 2014-07-25 | 2014-07-25 | Load balancing method and device |
| PCT/CN2014/092073 WO2016011752A1 (en) | 2014-07-25 | 2014-11-24 | Load balancing method and device |
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| CN201410362376.7A CN105282791A (en) | 2014-07-25 | 2014-07-25 | Load balancing method and device |
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| CN105282791A true CN105282791A (en) | 2016-01-27 |
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| CN (1) | CN105282791A (en) |
| WO (1) | WO2016011752A1 (en) |
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| WO2016011752A1 (en) | 2016-01-28 |
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