CN106714239A - LTE network load automatic balancing method and system - Google Patents
LTE network load automatic balancing method and system Download PDFInfo
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- CN106714239A CN106714239A CN201611150745.1A CN201611150745A CN106714239A CN 106714239 A CN106714239 A CN 106714239A CN 201611150745 A CN201611150745 A CN 201611150745A CN 106714239 A CN106714239 A CN 106714239A
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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
Abstract
The invention discloses an LTE network load automatic balancing method and system, and belongs to the field of mobile communication. The LTE network load automatic balancing method comprises the steps of calculating a key index when each network cell is busiest, and sieving a high-load cell according to a threshold; generating an adjustment scheme for a high-load cell based on an algorithm; executing the adjustment scheme and turning back an execution result; and carrying out intelligent assessment for cells which are subjected to the adjustment scheme successfully. The LTE network load automatic balancing method support optimization and load balancing of cross-network and cross-device manufacturers; and in comparison with traditional manual optimization, the LTE network load automatic balancing method can save a lot of labor costs, and can greatly improve the network optimization effect.
Description
Technical field
The present invention relates to mobile communication technology field, and in particular to a kind of LTE network loads the method for automatic equalization and is
System.
Background technology
With 4G networkings, number of users gradually increases, and " hot spot region " of traffic high aggregation is because of user's concentration, traffic
Amount is high, high to network service quality requirement.In high flow capacity hot spot region, the demand high of user is not necessarily effectively ensured.By
In the reduction of radius of society, the uneven phenomenon of user distribution is extremely serious, and it is heavier certain cell load often occur, and its adjacent area
Load is smaller, and the UE in cell edge can be switched to adjacent cell by such case high capacity cell, small so as to reach LTE
Interval load balancing so that power system capacity reaches maximization, improves the experience of high load capacity community user, optimizes network performance.And
The personnel of this need of work optimization at present analyze substantial amounts of statistics and carry out parameter adjustment and solved daily, exist and ask as follows
Topic：
Ductility during issue handling：Optimization personnel can only be analyzed by historical statistics, be found in network optimization engineer high negative
Index is continuous worsening to for a long time after lotus cell, it is impossible to ensure that problem is timely solved.
Data analysis magnanimity：Optimization personnel need to be analyzed the statistics of each period monitoring, replicate analysis
A large amount of performance statistics.
Human input chronicity：Cause the randomness of high load capacity cell because of the randomness of user distribution, therefore high load capacity is small
The solution in area is a long-term process, it is necessary to fixed input personnel cost is higher.
The content of the invention
For problems of the prior art, it is an object of the invention to provide a kind of LTE network load automatic equalization
Method and system, by the method and system can realize LTE network load automatic equalization, real-time monitoring high load capacity cell
Line parameter of going forward side by side adjustment reaches the effect of load sharing.Human resources are saved, network capacity and quality is lifted, optimizes Internet resources
Utilization rate.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of method that LTE network loads automatic equalization, comprises the following steps：
(1) the peak hour key index of each network cell is calculated, high load capacity cell is filtered out according to thresholding；
(2) Adjusted Option is generated to high load capacity cell according to algorithm；
(3) perform the Adjusted Option and return to implementing result；
(4) cell run succeeded to Adjusted Option carries out intelligent evaluation.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the step (1) is including such as
Lower sub-step：
(1-1) obtains the parameter information of Zhong Ge network cells in region to be optimized, and according to setting time granularity, gathers each net
The performance statistic of network cell；
(1-2) goes out high load capacity cell according to the parameter information and performance statistic of each network cell according to conditional filtering；
The condition must include following condition two, three, and including condition one or four in one:
Condition one：RRC connection number maximums are more than threshold value；
Condition two：Up PRB average utilizations, descending PRB average utilizations, effective RRC connects average, eats dishes without rice or wine up
Business byte number, downlink business byte number of eating dishes without rice or wine meets threshold value and logical relation；
Condition three：Adjustment cell is outdoor cell；
Condition four：Adjustment cell has alien frequencies adjacent area.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, calculates each net in step (1)
Determine period peak hour, peak hour definition, it is necessary to performance statistic calculate during the peak hour key index of network cell
It is as follows：The period of [up PRB takes average]+[descending PRB takes average] maximum, if multiple periods then press again
Determine period peak hour according to the up byte number in community user face+descending byte number maximum in community user face.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the up PRB is averagely sharp
Average * 100% can be used with rate=up PUSCH PRB take average/up PUSCH PRB；
Descending PRB average utilizations=descending PDSCH PRB take average/descending PDSCH PRB can use average *
100%；
It is determined that the method that adjustment cell has alien frequencies adjacent area is：Exist with current area frequency not in alien frequencies adjacent frequency table
Same alien frequencies frequency.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the step (2) is including such as
Lower sub-step：
(2-1) starting load equilibrium implementation strategy；
(2-2) judges to set coverage cell altogether；
(2-3) poll adjustment alien frequencies load key parameter；
The cell reselection priority adjustment of (2-4) adjacent area；
(2-5) adjusts timer.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the starting load equilibrium is held
Row strategy, including open load balancing switch, configuration alien frequencies load balancing parameter, configuration load equilibrium alien frequencies frequency, with being empty
Not busy state selection frequency policing parameter, configuration load equilibrium A4 events, the T320 timers for being configured to load balance.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the configuration alien frequencies load is equal
Weighing apparatus parameter includes that load balancing triggers pattern, alien frequencies load balancing number of users thresholding, the biasing of load balancing number of users, load balancing
Maximum switches out number of users, load balancing user selection PRB thresholdings, number of users difference threshold, alien frequencies load balancing transfer UE classes
Type, alien frequencies Idle state MLB number of users thresholdings, alien frequencies load evaluation cycle, load balancing frequency selection strategy, load balance user
Selection punishment timer, load balancing adjacent area scope, Idle state UE selection frequency point ranges, load balancing target frequency mark is born
Balance frequency priority, Idle state UE selection frequency strategies are carried, the alien frequencies RSRP based on load triggers thresholding, A4 measurement triggering classes
Type is set.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the judgement sets covering altogether
Cell includes the judgement and the definition of adjacent area parameter of co-sited or co-located alien frequencies adjacent area；Wherein, co-sited cell is by identical
ENODEBID judges that co-located cell judged by longitude and latitude.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the poll adjustment alien frequencies is born
Carrying key parameter includes：
(2-3-1) adjusts alien frequencies load balancing number of users thresholding；
(2-3-2) adjusts alien frequencies Idle state MLB number of users thresholdings；
(2-3-3) adjustment load balancing maximum switches out number of users；
(2-3-4) adjusts the alien frequencies load evaluation cycle.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the poll adjustment alien frequencies is born
Carrying the specific adjustment mode of key parameter is：
(2-3-1) adjusts alien frequencies load balancing number of users thresholding
Judge connected state number of users thresholding：If alien frequencies load balancing number of users thresholding>45, then alien frequencies load balancing user
Number thresholding reduces 10；
(2-3-2) adjusts alien frequencies Idle state MLB number of users thresholdings；
Judge alien frequencies Idle state MLB number of users thresholdings：If alien frequencies Idle state MLB number of users thresholdings>45, then alien frequencies is idle
State MLB number of users thresholdings subtract 10；
(2-3-3) adjustment load balancing maximum switches out number of users
Judge that load balancing maximum switches out number of users, if load balancing maximum switches out number of users<=20, then load
Balanced maximum switches out number of users and plus 5；
(2-3-4) adjusts the alien frequencies load evaluation cycle：
The alien frequencies load evaluation cycle is judged, if the alien frequencies load evaluation cycle>6, the alien frequencies load evaluation cycle subtracts 2.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, the adjacent area cell reselection is excellent
First level adjustment includes：
Judge priority：If Serving cell gravity treatment priority is more than alien frequencies frequency gravity treatment priority, modification mode is as follows：
It is and current service cell same priority by alien-frequency district priority modification；Change alien-frequency district priority in itself；Modification is current
The alien frequencies adjacent frequency priority of cell definitions.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, in step (2-4), judges clothes
Business cell reselection priority is more than the method for alien frequencies frequency gravity treatment priority：Parameter cell weight in parameter list CELLRESEL
Priority is selected more than the parameter alien frequencies frequency point cell gravity treatment priority in alien frequencies adjacent frequency table.
Further, the method for automatic equalization being loaded according to a kind of LTE network as described above, the adjustment timer bag
Include：
(2-5-1) adjusts UE inactivity timers
Judge current area, if current area UE inactivity timers are more than or equal to 10, be adjusted to 8 seconds；
(2-5-2) adjusts the T320 timers for load balance
If judging that current area is used for the T320 timers of load balance less than 20, it is adjusted to 20 minutes.
Further, the method for automatic equalization being loaded according to a kind of LTE network as described above, under the implementing result includes
Hair result and final implementing result, wherein issue result and including all issuing, all not issuing, partly issue；Finally perform knot
Fruit includes all successes, all part success, failure.
Further, the method for loading automatic equalization according to a kind of LTE network as described above, described pair of adjustment cell is carried out
Intelligent evaluation includes the assessment to load index and performance statistics index.
According to another aspect of the present invention, the system that a kind of LTE network loads automatic equalization is additionally provided, including it is following
Module：
Cell screening module, the peak hour key index for calculating each network cell, high load capacity is filtered out according to thresholding
Cell；
Tactful configuration module, for generating Adjusted Option to high load capacity cell according to algorithm；
Directive generation module, performs the Adjusted Option and returns to implementing result；
Intelligent evaluation module, the cell for being run succeeded to Adjusted Option carries out intelligent evaluation.
The beneficial effects of the present invention are：Method and system of the present invention, supports the automatic equalization of LTE network load
Assessment；Support the parameter adjustment of cell level；A large amount of human costs are saved, cost performance is high, and can ensure to provide unremitting excellent
Change service；High load capacity cell is adjusted in time, alien frequencies macro station cell load automatic equalization is realized, high load capacity cell ratio is reduced；
Optimization network resource utilization；Underload cell load sharing, points out network resource utilization；The method and system optimization and negative
It is controllable and obvious that lotus shares effect.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the method and system of LTE network load automatic equalization of offer in specific embodiment；
Fig. 2 is a kind of module map of the method and system of LTE network load automatic equalization of offer in specific embodiment.
Specific embodiment
With reference to Figure of description, the present invention is described in further detail with specific embodiment.
Fig. 1 shows a kind of method of LTE network load automatic equalization provided in the specific embodiment of the invention and is
System, the method may comprise steps of：
Step S1：Acquisition parameter performance data, screens high load capacity cell, and high load capacity cell and Key Performance Indicator are added
It is added in the selection result table.
In present embodiment, the high load capacity cell is the high load capacity cell of LTE network.
For the whole cells got, calculating sifting condition first refers to all key indexs, and formula is according to specification
Definition, the high load capacity cell that will meet screening conditions is added in the selection result table, and cell is can save energy as what is primarily determined that.
Screening index calculation in present embodiment, it is specific as follows：
(1) parameter information of Zhong Ge network cells in region to be optimized is obtained, and according to setting time granularity, gathers each network
The performance statistic of cell；
(2) according to the parameter information and performance statistic of each network cell, high load capacity cell is gone out according to conditional filtering；
Condition one：RRC connection number maximums are more than threshold value；
Condition two：Up PRB average utilizations, descending PRB average utilizations, effective RRC connects average, eats dishes without rice or wine up
Business byte number, downlink business byte number of eating dishes without rice or wine meets threshold value and logical relation.
Condition three：Adjustment cell is outdoor cell；
Condition four：Adjustment cell has alien frequencies adjacent area.
Logical relation:(condition 1 or condition 4) and condition 2 and condition 3.
For the present embodiment, can be set according to such as Lower Threshold：
1st, RRC connections number maximum>200；
2nd, cover type：It is outdoor；
3rd, there is alien frequencies adjacent area；
4th, (up PRB average utilizations>50% or descending PRB average utilizations>And (effective RRC connection is average 50%)
Number>And (uplink service byte number of eating dishes without rice or wine 30)>1000MB or downlink business byte number of eating dishes without rice or wine>5000MB)；
Logical relation:(condition 1 or condition 4) and condition 2 and condition 3.
The screening of high load capacity cell is completed, these cells can be added to the selection result table, as the time of schemes generation below
Select cell.
In present embodiment, after high load capacity cell list is obtained, also including being carried out to high load capacity cell list in real time more
Newly, the mode of renewal is to obtain the black and white cell list in region to be optimized, and the black and white deleted in high load capacity cell list is small
Area；Using the existing black and white cell list in existing network, black cell mainly includes that high-level alarm is small to the black and white cell list
Cell of area and KPI index errors etc., white cell refers to the not closable cell of artificial setting.
Step S2：Adjusted Option is generated to the high load capacity cell for filtering out according to algorithm team, and result is added to adjustment
Scheme list；Specific Adjusted Option is as follows：
1st, load balancing is opened
(1) alien frequencies load balance switch is started；
(2) configuration load balance parameters (differentiation bandwidth)；
(3) configuration load equilibrium alien frequencies frequency；
(4) configuration Idle state selection frequency policing parameter；
(5) configuration load equilibrium A4 events；
(6) T320 timers are configured；
(7) covering (co-sited, co-located) alien frequencies adjacent area altogether is set and overlaps covering parameter；
2nd, alien frequencies load balancing number of users thresholding is adjusted：
Alien frequencies load balancing number of users thresholding>45, then alien frequencies load balancing number of users thresholding reduction 10；
3rd, alien frequencies Idle state MLB number of users thresholdings are adjusted：
Alien frequencies Idle state MLB number of users thresholdings>45, then alien frequencies Idle state MLB number of users thresholdings subtract 10；
4th, adjustment load balancing maximum switches out number of users
Load balancing maximum switches out number of users<=20, then load balancing maximum switch out number of users and plus 5；
5th, the alien frequencies load evaluation cycle is adjusted：When the alien frequencies load evaluation cycle (second)>6, alien frequencies load evaluation cycle (second)
Subtract 2
6th, number of users difference threshold is adjusted：When number of users difference threshold is more than 5, successively decrease 3 every time；
7th, covering alien-frequency district priority adjustment altogether；
8th, UE inactivity timers are adjusted:Current area is judged, if current area UE inactivity timers are more than or equal to
10, then it is adjusted to 8 seconds；
9th, T320 timers are adjusted：If the T320 timers that current area is used for load balancing are less than 20, it is adjusted to
20 minutes.
Configuration load balance parameters need to distinguish bandwidth and carry out parameter setting in this example, because in LTE networkings at present
F2 frequency ranges can be using the bandwidth of 10M, and this can be variant in corresponding to parameter setting.2-9 strategies are a kind of poll adjustable strategies, such as
Cell continued high load then can repeatedly be adjusted to key parameter.
It should be noted that such scheme is a kind of embodiment, in actual applications, step-length can be as needed carried out
Adjustment.
Step S3：According to setting is performed, timing execute instruction simultaneously returns to implementing result, and result is added into instruction performs knot
In fruit table.
Here it can be that manual being immediately performed can also be that timing is performed to perform setting, depending on the configuration knot of user
Really.And implementing result also includes issuing result and final implementing result.Issuing result includes that whole is issued, whole is not issued, portion
Divide and issue；Final implementing result includes all successes, all part success, failure.User can be allowed fully to grasp instruction perform
Situation.
Because LTE parameter modifications are to log in modification according to IP address, each ENODEB has independent IP address, in order to
Improving execution efficiency can carry out instruction folding after schemes generation, and it is identical that merging condition just performs object ENODEB.Avoid weight
Same ENODEB is logged in again, that is, reducing efficiency also increases the load of network management system.
Step S4：Intelligent evaluation is carried out to having adjusted cell, assessment result is added in adjustment cell evaluation list.One
As in the case of be upper one adjustment cycle result to be estimated using current adjustment cycle data relate to, and the crucial KIP of LTE network
Index, and load index, load index can be consistent with screening conditions.Crucial KPI indexs have wireless cutting off rate, wireless to connect
The critical index such as rate, handover success rate, can be added as needed on.
In actual applications, can be adjusted according to optimization region actual conditions in screening thresholding, can also Xian Dui areas
Domain load condition is analyzed, and such as thresholding can be set somewhat higher by provincial capital or economically developed city, and, warp few with respect to user
Thresholding can be set lower by Ji low developed area.
Additionally, by obtaining the black and white cell list in network in real time, being carried out in time to the cell in adjustment cell list
Update, to avoid black cell or white cell occur in adjustment cell.
Based on the method shown in Fig. 1, the side that a kind of LTE network loads automatic equalization is additionally provided in the embodiment of the present invention
Method and system architecture diagram 2, as shown in Fig. 2 the system includes：Cell screening module 1, tactful configuration module 2, instruction generation mould
Block 3 and intelligent evaluation module 4.
Cell screening module 1, calculates the peak hour key index of each network cell, filters out high load capacity according to thresholding small
Area, including, the parameter information of Zhong Ge network cells in region to be optimized is obtained, and according to setting time granularity, gather each network small
The performance statistic in area；According to the parameter information and performance statistic of each network cell, high load capacity is gone out according to conditional filtering
Cell；
Tactful configuration module 2, for configuring the parameter name that is related to of measurement to the adjustment of high load capacity cell, thresholding, step-length,
Rule of judgment and logical relation etc..Can flexibly be set according to the multiple dimension such as equipment manufacturer, region, city.
Directive generation module 3, for being configured to modification parameter command form, including condition, modification parameter table name etc.
Ensure the correct execution of instruction；
Intelligent evaluation module 4, for being configured to evaluation condition and thresholding, assessment here is held just for Adjusted Option
The successful high load capacity cell of row.
In order to be better understood from the present invention, the present invention is further described with reference to specific embodiment.
Embodiment
The idiographic flow of the network optimized approach of the LTE network load automatic equalization provided in the present embodiment is as follows：
First, high load capacity cell is screened
Step 1, the parameter information for obtaining Zhong Ge network cells in region to be optimized, and according to setting time granularity, collection is each
The performance statistic of network cell；The peak hour key index of each network cell is calculated, it is necessary to calculate performance data
Determine period peak hour.
Peak hour defines：The period of [up PRB takes average]+[descending PRB takes average] maximum, if
Multiple periods then determine most according still further to the up byte number in community user face (MB)+community user face descending byte number (MB) maximum
The busy period.
Step 2, parameter information and performance statistic according to each network cell, go out high load capacity small according to conditional filtering
Area；
Condition one：RRC connection number maximums are more than threshold value；
Condition two：Up PRB average utilizations, descending PRB average utilizations, effective RRC connects average, eats dishes without rice or wine up
Business byte number, downlink business byte number of eating dishes without rice or wine meets threshold value and logical relation.
Condition three：Adjustment cell is outdoor cell；
Condition four：Adjustment cell has alien frequencies adjacent area.
In the present embodiment, screening thresholding sets as follows；
1st, RRC connections number maximum>200；
2nd, MPS process type：It is outdoor；
3rd, cell has alien frequencies adjacent area；
4th, (up PRB average utilizations>50% or descending PRB average utilizations>And (effective RRC connection is average 50%)
Number>And (uplink service byte number of eating dishes without rice or wine 30)>1000MB or downlink business byte number of eating dishes without rice or wine>5000MB)；
Logical relation:(condition 1 or condition 4) and condition 2 and condition 3.
Cell has alien frequencies adjacent area to judge：To FreqBand in parameter list EUTRANINTERNFREQ (high load capacity cell)
In FreqBand (the alien frequencies frequency of the small definition of high load capacity) and FreqBand (high load capacity cell) and FreqBand, (high load capacity is small fixed
The alien frequencies frequency of justice) only in F or D frequency ranges.
Up PRB average utilizations=up PUSCH PRB take average/up PUSCH PRB can use average *
100%.
Descending PRB average utilizations=descending PDSCH PRB take average/descending PDSCH PRB can use average *
100%.
Cover type is obtained by LTE basic datas.
2nd, Adjusted Option is generated
High load capacity cell to filtering out above carries out instruction generation according to configured good strategy.
Open load balancing：
Rule of judgment 1：Judge whether not opening dynamic load equilibrium：
MLBALGOSWITCH=InterFreqMlbSwitch-1
Rule of judgment 2：Judge that the cell whether there is F-band, D frequency range alien frequencies adjacent frequencies.
Meet conditions above then carries out parameter adjustment according to following order：
1st, alien frequencies load balance switch is started
Open alien frequencies load balance switch (InterFreqMlbSwitch) and alien frequencies Idle state load balance switch
(InterFreqIdleMlbSwitch)。
2nd, configuration load balance parameters (differentiation bandwidth)
Load balancing triggering pattern, alien frequencies load balancing number of users thresholding, load balancing number of users is directed to bias, bear
Carry balanced maximum and switch out number of users, load balancing user selection PRB thresholdings, number of users difference threshold, alien frequencies load balancing turn
Move UE types, alien frequencies Idle state MLB numbers of users thresholding, the alien frequencies load evaluation cycle (second), load balancing frequency selection strategy, negative
Carry balancing user selection punishment timer, load balancing adjacent area scope, Idle state UE selections frequency point ranges, load balancing target frequently
Point identification, load balance frequency priority, Idle state UE selection frequencies strategy, the alien frequencies RSRP triggerings thresholding based on load, A4
Measurement triggering type.Design parameter sets and see the table below shown in 1：
Table 1
3rd, the configuration load equilibrium frequent point of alien frequencies
In the alien frequencies adjacent frequency of current area, for F D frequencies, modification " load balancing target frequency mark " be fair
Perhaps；
Configuration load equilibrium priority (MlbFreqPriority)：In the alien frequencies adjacent frequency of current area, by D frequently
Section load balance frequency priority is configured to 7, F1 frequency range load balance frequency priority, and to be configured to 7, F2 frequency range load balancing excellent
First level is set to 6.
4th, configuration Idle state selection frequency policing parameter；
5th, configuration load equilibrium A4 events；
6th, T320 timers are configured；
The 7th, covering (co-sited, co-located) alien frequencies adjacent area altogether is set；
1) coverage cell judges altogether
(1) the common coverage cell of co-sited：In F-band cell, ENODEBID is identical with deflection, and cellid different cells is mutual
It is the common coverage cell of co-sited；
(2) co-located coverage cell altogether：Consistent according to longitude and latitude in basic data, ECI is different to judge there is co-located alien frequencies
Whether website, have whether the co-located station of D frequency ranges, D frequency ranges website have the co-located station of F-band mainly for there is F-band website.
2) it is alien frequencies adjacent area to judge whether the cell is configured with common coverage cell；
3) definition covers adjacent area altogether：Change " overlap covering marking " in common coverage cell for having added alien frequencies adjacent area
(OverlapInd) it is yes, configuration superimposed coverage area (OverlapRange) is 1 (same).
2) covering alien-frequency district priority adjusts sub-process altogether；
Judge 1：CellReselectPriority (high load capacity) is worked as according to parameter list CELLRESEL>
CellReselectPriority (covers alien-frequency district) altogether.
Judge 2：CellReselectPriority (high load capacity)>CellReselectPriority (alien frequencies frequency point cells
Gravity treatment priority), the parameter list used in deterministic process is the cell reselection parameters table (CELLRESEL) in Huawei's network management system
With alien frequencies adjacent frequency table (EUTRANINTERNFREQ), alien frequencies is F/D frequency range cells.
Meet one condition of any of the above then change CellReselPriority (covering alien-frequency district altogether)=
CellReselPriority (screening cell).
2nd, alien frequencies load balancing number of users thresholding is adjusted
Alien frequencies load balancing number of users thresholding>45, then alien frequencies load balancing number of users thresholding reduction 10.
3rd, alien frequencies Idle state MLB number of users thresholdings are adjusted
Alien frequencies Idle state MLB number of users thresholdings>45, then alien frequencies Idle state MLB number of users thresholdings subtract 10.
4th, adjustment load balancing maximum switches out number of users
Load balancing maximum switches out number of users<=20, then load balancing maximum switch out number of users and plus 5.
5th, the alien frequencies load evaluation cycle is adjusted
Judge alien frequencies load evaluation cycle (second) alien frequencies load evaluation cycle (second)>6, the alien frequencies load evaluation cycle (second) subtracts
2。
Before practical solution generation, system can be verified to corresponding adjusting parameter, and being such as revised as a certain fixed value can sentence
Whether disconnected currency is modified values, does not generate instruction if it is, it is to avoid generation redundant instruction.
Instruction generation further relates to the correct format that each parameter is changed in producer's system, if desired for the condition for providing, if
The instruction of generation does not meet producer's requirement, then cannot correctly perform.
3rd, instruction is performed
Instruction execution has two ways system to perform and manually perform, and can be determined according to the configuration of user oneself.But
To avoid instructing frequently modification, system can only be changed once within an adjustment cycle, and such as user has manually performed, cannot be right again
The cell performs equivalent modifications order.Until next adjustment cycle.
4th, intelligent evaluation
Intelligent evaluation is related to load index to assess and Key Performance Indicator assessment, and analysis and regulation cell is carried out from two dimensions
Index situation.
1st, performance indications
【Index 1】, [wireless percent of call completed (after adjustment)-wireless percent of call completed (before adjustment)]/wireless percent of call completed (before adjustment)
【Index 2】, [wireless drop rate (after adjustment)-wireless drop rate (before adjustment)]/wireless drop rate (before adjustment)
【Index 3】, [handover success rate (after adjustment)-handover success rate (before adjustment)]/handover success rate (before adjustment).
2nd, performance evaluation result
(1) performance improvement
Condition 1：【Index 1】>=3% and -5%<【Index 2】<5% and -3%<【Index 3】<3%
Condition 2：【Index 2】<=5% and -3%<【Index 1】<3% and -3%<【Index 3】<3%
Condition 3：【Index 3】>=3% and -5%<【Index 2】<5% and -3%<【Index 1】<3%
Relation：Condition 1 or condition 2 or condition 3.
(2) penalty
Condition 1：【Index 1】<=-3%
Condition 2：【Index 2】>=5%
Condition 3：【Index 1】<=-3%
Relation：Condition 1 or condition 2 or condition 3.
(3) property retention
Condition 1：- 3%<【Index 1】<3%
Condition 2：- 5%<【Index 2】<5%
Condition 3：- 3%<【Index 3】<3%
Relation：Condition 1 and condition 2 and condition 3.
3rd, load index
Index 1, [RRC connections number maximum (after adjustment)-RRC connects number maximum (before adjustment)]/RRC connection numbers are maximum
Value is (before adjustment)
Index 2, [(up PRB average utilizations (after adjustment)-up PRB average utilizations (before adjustment)]/up PRB
Average utilization (before adjustment)
Index 3, descending PRB average utilizations (after adjustment)-descending PRB average utilizations (before adjustment)]/descending PRB put down
Equal utilization rate (before adjustment)
Index 4, effective RRC connect average (after adjustment)-effectively RRC and connect average (before adjustment)]/effective RRC companies
Connect average (before adjustment).
4th, load evaluation result
(1) load is reduced
Condition 1：【Index 1】<=-20%
Condition 2：【Index 2】<=-20% or【Index 3】<=-20%
Condition 3：【Index 4】<=-20%
Relation：Condition 1 or (condition 2 and condition 3).
(2) load increases
Condition 1：【Index 1】>=20%
Condition 2：【Index 2】>=20% or【Index 3】>=20%
Condition 3：【Index 4】>=20%
Relation：Condition 1 or condition 2 or condition 3.
(3) load keeps
Condition 1：- 20%<【Index 1】<20%
Condition 2：- 20%<【Index 2】<20% or -20%<【Index 3】<20%
Condition 3：- 20%<【Index 4】<20%
Relation：Condition 1 and condition 2 and condition 3.
Each threshold value as implied above is the one kind in the present embodiment, and phase can be as needed carried out in actual applications
The adjustment answered.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technology
Within, then the present invention is also intended to comprising these changes and modification.
Claims (16)
1. a kind of method that LTE network loads automatic equalization, comprises the following steps：
(1) the peak hour key index of each network cell is calculated, high load capacity cell is filtered out according to thresholding；
(2) Adjusted Option is generated to high load capacity cell according to algorithm；
(3) perform the Adjusted Option and return to implementing result；
(4) cell run succeeded to Adjusted Option carries out intelligent evaluation.
2. the method that a kind of LTE network according to claim 1 loads automatic equalization, it is characterised in that：The step (1)
Including following sub-step：
(1-1) obtains the parameter information of Zhong Ge network cells in region to be optimized, and according to setting time granularity, gathers each network small
The performance statistic in area；
(1-2) goes out high load capacity cell according to the parameter information and performance statistic of each network cell according to conditional filtering；It is described
Condition must include following condition two, three, and including condition one or four in one:
Condition one：RRC connection number maximums are more than threshold value；
Condition two：Up PRB average utilizations, descending PRB average utilizations, effective RRC connects average, uplink service of eating dishes without rice or wine
Byte number, downlink business byte number of eating dishes without rice or wine meets threshold value and logical relation；
Condition three：Adjustment cell is outdoor cell；
Condition four：Adjustment cell has alien frequencies adjacent area.
3. the method that a kind of LTE network according to claim 2 loads automatic equalization, it is characterised in that：Step (1) is fallen into a trap
Determine period peak hour, it is necessary to performance statistic calculate when calculating the peak hour key index of each network cell, it is most busy
When be defined as follows：The period of [up PRB takes average]+[descending PRB takes average] maximum, if multiple periods
Then determine period peak hour according still further to the up byte number in community user face+descending byte number maximum in community user face.
4. the method that a kind of LTE network according to claim 2 loads automatic equalization, it is characterised in that：The up PRB
Average utilization=up PUSCH PRB take average/up PUSCH PRB can use average * 100%；
Descending PRB average utilizations=descending PDSCH PRB take average/descending PDSCH PRB can use average * 100%；
It is determined that the method that adjustment cell has alien frequencies adjacent area is：Exist in alien frequencies adjacent frequency table different from current area frequency
Alien frequencies frequency.
5. the method that a kind of LTE network according to claim 1 and 2 loads automatic equalization, it is characterised in that：The step
(2) including following sub-step：
(2-1) starting load equilibrium implementation strategy；
(2-2) judges to set coverage cell altogether；
(2-3) poll adjustment alien frequencies load key parameter；
The cell reselection priority adjustment of (2-4) adjacent area；
(2-5) adjusts timer.
6. the method that a kind of LTE network according to claim 5 loads automatic equalization, it is characterised in that：Described startup is born
Balanced implementation strategy is carried, including opens load balancing switch, configuration alien frequencies load balancing parameter, configuration load equilibrium alien frequencies frequently
Point, configuration Idle state selection frequency policing parameter, configuration load equilibrium A4 events, it is configured to the T320 of load balance regularly
Device.
7. the method that a kind of LTE network according to claim 6 loads automatic equalization, it is characterised in that：The configuration is different
Frequency load balancing parameter includes that load balancing triggers pattern, and alien frequencies load balancing number of users thresholding, load balancing number of users is biased,
Load balancing maximum switches out number of users, load balancing user selection PRB thresholdings, number of users difference threshold, alien frequencies load balancing
Transfer UE types, alien frequencies Idle state MLB number of users thresholdings, alien frequencies load evaluation cycle, load balancing frequency selection strategy, load
Balancing user selection punishment timer, load balancing adjacent area scope, Idle state UE selection frequency point ranges, load balancing target frequency
Mark, load balance frequency priority, Idle state UE selection frequency strategies, the alien frequencies RSRP based on load triggers thresholding, and A4 is surveyed
Amount triggering type is set.
8. the method that a kind of LTE network according to claim 5 loads automatic equalization, it is characterised in that：The judgement sets
Put judgement and the definition of adjacent area parameter of the common coverage cell including co-sited or co-located alien frequencies adjacent area；Wherein, co-sited cell passes through phase
Judge with ENODEBID, co-located cell is judged by longitude and latitude.
9. the method that a kind of LTE network according to claim 5 loads automatic equalization, it is characterised in that：The poll is adjusted
Whole alien frequencies load key parameter comprises the following steps：
(2-3-1) adjusts alien frequencies load balancing number of users thresholding；
(2-3-2) adjusts alien frequencies Idle state MLB number of users thresholdings；
(2-3-3) adjustment load balancing maximum switches out number of users；
(2-3-4) adjusts the alien frequencies load evaluation cycle.
10. the method that a kind of LTE network according to claim 9 loads automatic equalization, it is characterised in that：The poll is adjusted
Whole alien frequencies loads the specific adjustment mode of key parameter：
(2-3-1) adjusts alien frequencies load balancing number of users thresholding
Judge connected state number of users thresholding：If alien frequencies load balancing number of users thresholding>45, then alien frequencies load balancing number of users door
Limit reduces 10；
(2-3-2) adjusts alien frequencies Idle state MLB number of users thresholdings；
Judge alien frequencies Idle state MLB number of users thresholdings：If alien frequencies Idle state MLB number of users thresholdings>45, then alien frequencies Idle state
MLB number of users thresholdings subtract 10；
(2-3-3) adjustment load balancing maximum switches out number of users
Judge that load balancing maximum switches out number of users, if load balancing maximum switches out number of users<=20, then load balancing
Maximum switches out number of users and plus 5；
(2-3-4) adjusts the alien frequencies load evaluation cycle：
The alien frequencies load evaluation cycle is judged, if the alien frequencies load evaluation cycle>6, the alien frequencies load evaluation cycle subtracts 2.
The method that a kind of 11. LTE networks according to claim 5 load automatic equalization, it is characterised in that：The adjacent area is small
The adjustment of area's gravity treatment priority includes：
Judge priority：If Serving cell gravity treatment priority is more than alien frequencies frequency gravity treatment priority, modification mode is as follows：Will be different
Frequency native region priority is revised as and current service cell same priority；Change alien-frequency district priority in itself；Modification current area
The alien frequencies adjacent frequency priority of definition.
The method that a kind of 12. LTE networks according to claim 11 load automatic equalization, it is characterised in that：Step (2-4)
In, judge that Serving cell gravity treatment priority is more than the method for alien frequencies frequency gravity treatment priority：Ginseng in cell reselection parameters table
Number cell reselection priority is more than the parameter alien frequencies frequency point cell gravity treatment priority in alien frequencies adjacent frequency table.
The method that a kind of 13. LTE networks according to claim 5 load automatic equalization, it is characterised in that：The adjustment is fixed
When device include：
(2-5-1) adjusts UE inactivity timers
Judge current area, if current area UE inactivity timers are more than or equal to 10, be adjusted to 8 seconds；
(2-5-2) adjusts the T320 timers for load balance
If judging that current area is used for the T320 timers of load balance less than 20, it is adjusted to 20 minutes.
The method that a kind of 14. LTE networks according to claim 1 load automatic equalization, it is characterised in that：It is described to perform knot
Fruit includes issuing result and final implementing result, wherein issue result and including all issuing, all not issuing, partly issue；Most
Whole implementing result includes all successes, all part success, failure.
The method that a kind of 15. LTE networks according to claim 1 load automatic equalization, it is characterised in that：Described pair of adjustment
Cell carries out intelligent evaluation includes the assessment to load index and performance statistics index.
The system that a kind of 16. LTE networks load automatic equalization, it is characterised in that including with lower module：
Cell screening module, the peak hour key index for calculating each network cell, high load capacity cell is filtered out according to thresholding；
Tactful configuration module, for generating Adjusted Option to high load capacity cell according to algorithm；
Directive generation module, performs the Adjusted Option and returns to implementing result；
Intelligent evaluation module, the cell for being run succeeded to Adjusted Option carries out intelligent evaluation.
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