CN103415041B

CN103415041B - A kind of method and device of load of base station equilibrium

Info

Publication number: CN103415041B
Application number: CN201310305965.7A
Authority: CN
Inventors: 张建民; 李斌; 裴玉
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2016-09-28
Anticipated expiration: 2033-07-19
Also published as: CN103415041A

Abstract

The invention provides the method and device of a kind of load of base station equilibrium, the method comprise the steps that when source base station is in overload state, initiate resource request information to adjacent base station；Receiving the resource response information of described adjacent base station, described resource response information includes responding successful information；Target BS is determined according to described response successful information；If described target BS meets default base station switching condition, carry out user's migration to described target BS.The present invention can make what user resources more rationalized to be assigned in different base station, thus promotes the resource utilization that network is overall.

Description

A kind of method and device of load of base station equilibrium

Technical field

The present invention relates to communication technical field, the method particularly relating to the equilibrium of a kind of load of base station, And, the device of a kind of load of base station equilibrium.

Background technology

In a communications system, the randomness of customer location and the multiformity of business demand, can cause little Load distribution unbalanced situation in district's occurs, the most a part of cell load is overweight, even produces data Congested, another part community relative free, light load simultaneously.Unbalanced in above-mentioned load distribution Situation when occurring, by base station, existing load-balancing technique mainly judges that certain base station is (little District) load higher time, by switching, amendment community select the measure such as reselecting parameters or redirection, Make certain customers leave this community, transfer to the lighter adjacent cell of load around or with covering Community, has thus reached to be redistributed to load from high community the purpose of low community.

But, existing load-balancing technique simply considers when this cell load is too high, by part User moves to, with in the adjacent base station (adjacent cell) covered or specify, so be migrated to as user With in the community covered, only it is the reduction of cell load, but does not alleviate load of base station；Or use Family be migrated to load higher but allow equilibrium incision adjacent base station cell in, although make this base station Load reduction, but there will be in network the load of portion of base stations apparently higher than peripheral base station Situation, and then the resource utilization causing network overall is the highest.

Therefore, to be to provide a kind of load of base station equal for those skilled in the art's technical problem to be solved Weighing apparatus mechanism, carries out load balancing switching in order to automatically select optimum adjacent base station (adjacent cell), uses What family resource was more rationalized is assigned in different base station, thus promotes the resource utilization that network is overall.

Summary of the invention

The technical problem to be solved is to provide the method for a kind of load of base station equilibrium, uses What family resource was more rationalized is assigned in different base station, thus promotes the resource utilization that network is overall.

Accordingly, present invention also offers the device of a kind of load of base station equilibrium, above-mentioned in order to ensure The realization of method and application.

In order to solve the problems referred to above, the method that the invention discloses the equilibrium of a kind of load of base station, including:

When source base station is in overload state, initiate resource request information to adjacent base station；

Receiving the resource response information of described adjacent base station, described resource response information includes responding successfully Information；

Target BS is determined according to described response successful information；

If described target BS meets default base station switching condition, use to described target BS Family migrates.

Preferably, judge whether source base station is in overload state in the following way:

Obtaining state and the load evaluation value of source base station, the state of described source base station includes activated state；

When the state of described source base station is activated state, it is judged that whether described load evaluation value is more than the One predetermined threshold value；

The most then it is judged as that described source base station is in overload state.

Preferably, described response successful information includes the resources left capacity of the community in respective base station Parameter, described foundation response successful information determines that the step of target BS includes:

Obtain the adjacent base station number of all returns described response successful information；

When the adjacent base station number of described return described response successful information is one, by described return The adjacent base station of response successful information is as target BS；

When the described adjacent base station number returning response successful information is multiple, return response by described The multiple adjacent base station composition candidate list of base stations of successful information；

The adjacent cell place of resources left capacity parameter maximum is selected from described candidate list of base stations Base station is as target BS.

Preferably, the described neighbour selecting resources left capacity parameter maximum from candidate list of base stations is little The base station at place, district farther includes as the sub-step of target BS:

Obtain same frequency or alien-frequency district selection priority that source base station is formerly arranged；

If described co-frequency cell is identical with the selection priority of alien-frequency district, then resources left is selected to hold The base station at the adjacent cell place that amount parameter is maximum is as target BS；

If described co-frequency cell is different from the selection priority of alien-frequency district, then obtain in co-frequency cell The maximum of resources left capacity parameter, and the maximum of resources left capacity parameter in alien-frequency district Value, and calculate both differences；

If the selection priority of described co-frequency cell is higher than described alien-frequency district, and in co-frequency cell Resources left capacity parameter is little compared with the resources left capacity parameter in alien-frequency district, then in described difference During more than or equal to the second predetermined threshold value, select resources left capacity parameter maximum in alien-frequency district The base station at adjacent cell place is target BS；When described difference is less than the second predetermined threshold value, select In co-frequency cell, the base station at the adjacent cell place that resources left capacity parameter is maximum is target BS；

If the selection priority of described alien-frequency district is higher than described co-frequency cell, and in alien-frequency district Resources left capacity parameter is little compared with the resources left capacity parameter in co-frequency cell, then in described difference During more than or equal to the second predetermined threshold value, select resources left capacity parameter maximum in co-frequency cell The base station at adjacent cell place is target BS；When described difference is less than the second predetermined threshold value, select In alien-frequency district, the base station at the adjacent cell place that resources left capacity parameter is maximum is target BS.

Preferably, whether described target BS meets default base station switching condition, uses such as lower section Method judges:

The resources left capacity parameter of the Target cell in acquisition target BS；

Judge the resources left capacity parameter of Target cell in described target BS whether more than or etc. In the 5th predetermined threshold value；

If described resources left capacity parameter is more than or equal to the 5th predetermined threshold value, at described candidate's base Stand and described target BS is deleted in list, generate new candidate list of base stations；

From described new candidate list of base stations, determine target BS, return described acquisition target BS In the step of resources left capacity parameter of Target cell；

If described candidate list of base stations does not meet the target BS of default base station switching condition, Then the adjacent base station of other from described candidate list of base stations selects target BS.

Preferably, if described target BS meets default base station switching condition, to described target base Station carries out the step of user's migration and includes:

If the resources left capacity parameter of the Target cell in described target BS presets threshold less than the 5th Value, sends handover request to described target BS；

Receive the confirmation message of target BS；

Obtain all users being active under source base station, and by configuring survey to described user Amount, receives the measurement report of described user, to obtain the described user signal intensity at Target cell, According to described signal intensity by weak, described user being ranked up by force；

Choose the preceding one or more users of sequence to carry out migrating preparation；

Receive the resource status more new information that target BS reports, described resource status more new information bag Include the resources left capacity parameter that the Target cell in target BS is current, if described resources left is held The one or more user, more than the 3rd predetermined threshold value, is migrated by amount parameter.

Preferably, described method also includes:

When reaching following condition, source base station sends stopping message informing target BS to be stopped reporting money Source state more new information:

The Load balanced control switch of source base station cuts out；

And/or

The load evaluation value of source base station is less than or equal to the 6th predetermined threshold value；

And/or

The Load balanced control switch of target BS cuts out；

And/or

The resources left capacity parameter of the Target cell in target BS is preset more than or equal to the 5th Threshold value；

And/or

Source base station sends handover request, and described handover request includes the resource being ready for migrated users Take minima, when the Current resource residual capacity parameter and the 5th of the Target cell in target BS When the difference of predetermined threshold value is less than the resource occupation minima being ready for migrated users, target BS Notice source base station switching prepares unsuccessfully, and source base station stops user and migrates, and notifies that target BS stops Report resource status more new information.

Preferably, the resource response information of described adjacent base station also includes responding failure information, described source The state of base station includes that dormant state, described method also include:

When all of adjacent base station all returns response failure information, again initiating resource to adjacent base station please Seek information, until receiving the response successful information of adjacent base station, or, until described resource request Number of times reach the 4th predetermined threshold value；

When the number of times of described resource request reaches four predetermined threshold value, described source base station enters dormancy State.

Preferably, described method also includes:

When the dormancy time of the described source base station being in dormant state reaches Preset Time thresholding, described Source base station enters activated state；

If described source base station is still within overload state, the most again initiate resource request to adjacent base station Information.

Present invention also offers the device of a kind of load of base station equilibrium, including:

Resource request information initiation module, for when source base station is in overload state, to adjacent base Stand and initiate resource request information；

Resource response information receiving module, for receiving the resource response information of described adjacent base station, institute State resource response information to include responding successful information；

Target BS determines module, for determining target BS according to described response successful information；

User's transferring module, is used for when described target BS meets default base station switching condition, User's migration is carried out to described target BS.

Preferably, described response successful information includes the resources left capacity of the community in respective base station Parameter, described target BS determines that module includes:

Adjacent base station number obtains submodule, for obtaining the neighbour of all returns described response successful information Base station number；

First object base station determines submodule, for as the neighbour of described return described response successful information When base station number is one, using the described adjacent base station of response successful information that returns as target BS；

Candidate list of base stations composition submodule, for when the described adjacent base station returning response successful information When number is multiple, by the described multiple adjacent base station composition candidate base station row returning response successful information Table；

Second target BS determines submodule, for selecting resource to remain from described candidate list of base stations The base station at the adjacent cell place that remaining capacity parameter is maximum is as target BS.

Preferably, described second target BS determines that submodule farther includes:

Priority acquiring unit, for obtaining same frequency or the alien-frequency district selection that source base station is formerly arranged Priority；

First object base station determines unit, if excellent with the selection of alien-frequency district for described co-frequency cell First level is identical, then select the base station at adjacent cell place of resources left capacity parameter maximum as target Base station；

Difference computational unit, for different from the selection priority of alien-frequency district in described co-frequency cell Time, obtain the maximum of resources left capacity parameter in co-frequency cell, and resource in alien-frequency district The maximum of residual capacity parameter, and calculate both differences；

Second target BS determines unit, for the selection priority in described co-frequency cell higher than institute State resources left capacity parameter in alien-frequency district, and co-frequency cell compared with in alien-frequency district resource Residual capacity parameter hour, and when described difference is more than or equal to the second predetermined threshold value, select different Frequently in community, the base station at the adjacent cell place that resources left capacity parameter is maximum is target BS；Institute When stating difference less than the second predetermined threshold value, select resources left capacity parameter maximum in co-frequency cell The base station at adjacent cell place is target BS；

3rd target BS determines unit, for the selection priority in described alien-frequency district higher than institute The resources left capacity parameter stated in co-frequency cell, and alien-frequency district remains compared with the resource in co-frequency cell Remaining capacity parameter hour, and when described difference is more than or equal to the second predetermined threshold value, select with frequency In community, the base station at the adjacent cell place that resources left capacity parameter is maximum is target BS；Described When difference is less than the second predetermined threshold value, select the neighbour that in alien-frequency district, resources left capacity parameter is maximum The base station at place, community is target BS.

Preferably, described user's transferring module includes:

Handover request sends submodule, and the resource for the Target cell in described target BS remains When remaining capacity parameter is less than five predetermined threshold value, send handover request to described target BS；

Confirm message sink submodule, for receiving the confirmation message of target BS；

User's sorting sub-module, for obtaining all users being active under source base station, and By configuring measurement to described user, receive the measurement report of described user, to obtain described user At the signal intensity of Target cell, according to described signal intensity by weak, described user being arranged by force Sequence；

User chooses submodule, is used for choosing the preceding one or more users of sequence and carries out migrating standard Standby；

Migrate submodule, for receiving the resource status more new information that target BS reports, described money The resources left capacity parameter that state Target cell during more new information includes target BS in source is current, When described resources left capacity parameter is more than three predetermined threshold value, by the one or more user Migrate.

Preferably, described device also includes:

Stopping message transmission module, for when reaching following condition, source base station sends and stops message Notice target BS stops reporting resource status more new information:

The Load balanced control switch of source base station cuts out；

And/or

The Load balanced control switch of target BS cuts out；

And/or

The resources left capacity parameter of the Target cell in target BS presets threshold more than or equal to the 5th Value；

And/or

Preferably, the resource response information of described adjacent base station also includes responding failure information, described source The state of base station includes that dormant state, described device also include:

Resource request information sending module again, for responding unsuccessfully when all of adjacent base station all returns During information, again initiate resource request information to adjacent base station, until receiving responding into of adjacent base station Merit information, or, until the number of times of described resource request reaches the 4th predetermined threshold value；

Dormant state modular converter, for presetting when the number of times of described source base station resource request reaches the 4th During threshold value, enter dormant state.

Preferably, described device also includes:

Activated state modular converter, for when described in be in dormant state the dormancy time of source base station reach During Preset Time thresholding, described source base station enters activated state；

Resource request information initiation module again, for being still within overload shape at described source base station During state, the most again initiate resource request information to adjacent base station.

Compared with prior art, the present invention includes advantages below:

First, the embodiment of the present invention is when source base station is in overload state, periodically to adjacent base Standing and initiate resource request information, until there being adjacent base station to respond response successful information, responding sound from described The adjacent base station selecting optimum in the adjacent base station of successful information is answered to carry out user's migration as target BS, What the use making user resources more rationalized is assigned in different base station, improves Internet resources entirety Utilization rate；

Second, improve load-balancing function further, optimize opening of Load balanced control switching function Algorithm that is dynamic and that close, and reduce the signaling traffic load of X2 interface to a certain extent.

Accompanying drawing explanation

Fig. 1 is the flow chart of steps of the embodiment of the method one of a kind of load of base station of present invention equilibrium；

Fig. 2 is load balancing decision flow in the embodiment of the method two that a kind of load of base station of the present invention equalizes The flow chart of journey；

Fig. 3 is that in the embodiment of the method two that a kind of load of base station of the present invention equalizes, target BS selects stream The flow chart of journey；

Fig. 4 is load balancing switching stream in the embodiment of the method two that a kind of load of base station of the present invention equalizes The flow chart of journey；

Fig. 5 is the structured flowchart of the device embodiment of a kind of load of base station of present invention equilibrium.

Detailed description of the invention

Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with The present invention is further detailed explanation for the drawings and specific embodiments.

The core idea of the embodiment of the present invention is, on existing load-balancing technique, adds Automatically selecting of optimum equalization handover-target base station (adjacent cell), makes the use of user resources more close Being assigned in different base station of physics and chemistry, improves the utilization rate that Internet resources are overall；The present invention is also simultaneously Improve the algorithm that spatial load forecasting opens and closes, optimize load-balancing algorithm, and to a certain degree On decrease load balancing switching X2 interface signaling traffic load.

Embodiment one

With reference to Fig. 1, it is shown that the step stream of the embodiment of the method one of a kind of load of base station of present invention equilibrium Cheng Tu, specifically includes following steps:

Step 101, when source base station is in overload state, initiates resource request information to adjacent base station；

In a communications system, the randomness of customer location and the multiformity of business demand, can cause little Load distribution unbalanced situation in district's occurs, i.e. there is a part of cell load overweight, even produces The overload state of data congestion.When base station is in overload state, can be to all adjacent base stations Initiating resource request information, now, the base station initiating resource request information is referred to as source base station.

In a kind of preferred exemplary of the embodiment of the present invention, described resource request information can include source Base station measurement ID, adjacent base station measurement ID, community ID, registration information, Report Properties information (need Adjacent base station is wanted to report the relevant parameter of resource situation) etc..

In one preferred embodiment of the invention, source base station can be judged whether in the following way It is in overload state:

(1) obtaining state and the load evaluation value of source base station, the state of described source base station includes swashing State alive；

In implementing, when the load control switch of base station is opened, the shape of base station can be obtained State and load evaluation value.Specifically, the state of base station can include activated state and dormant state, Base station in a dormant state time can not initiate resource request information, but resource request letter can be received Breath.During it addition, base station enters dormant state, can start doze output, therefore base station is from dormant state Two approach can be had to activated state, a resource request information being to receive adjacent base station, another It is that doze output is to the time.

And described load evaluation value can be opened cell load by base station and be controlled switch (base station has out Close the setting controlled), start the function of base station self-inspection resource load condition and obtain.

(2) when the state of described source base station is activated state, it is judged that described load evaluation value is the biggest In the first predetermined threshold value；The most then it is judged as that described source base station is in overload state；If it is not, Then it is judged as that described source base station is in non-overload state；

Specifically, described first predetermined threshold value is properly termed as again resource request threshold value (when source base The load evaluation value stood higher than after a threshold value, sends resource request information to adjacent cell, i.e. this Thresholding is resource request threshold value), if the load evaluation value of base station is higher than resource request threshold value, then Being judged as that described base station is in overload state, otherwise, described base station is non-overload state.

Step 103, receives the resource response information of described adjacent base station, and described resource response information includes Response successful information；

Specifically, described adjacent base station can be one or more, when the one or more adjacent base Resource response information is replied after receiving resource request information in station, and described resource response information can include Response successful information or response failure information, can include respective base station in described response successful information In the resources left capacity parameter of community, in order to be beneficial to source base station and choose target BS.

When the resource response information of all adjacent base stations be all to respond failure information, source base station again to Resource request information is initiated in all adjacent base stations, until receiving the response successful information of adjacent base station, or Person, until the number of times of described resource request reaches the 4th predetermined threshold value, described 4th predetermined threshold value can (do not receiving the response successful information of adjacent base station with referred to as number of retransmissions thresholding or receiving adjacent base station During response failure information, source base station repeats to send resource request information again, and above-mentioned mistake is repeated The total degree of journey is number of retransmissions thresholding (everyway at Signalling exchange has application)), when described When the number of times of resource request reaches number of retransmissions thresholding, described source base station enters dormant state, described negative Carry Balance route switching function to close.When the dormancy time of the described source base station being in dormant state reaches During Preset Time thresholding, or when described source base station receives the resource request information of other base stations, institute Stating source base station and enter activated state, described load balancing controls switching function and is again turned on, with this Optimize startup and the algorithm of closedown of Load balanced control switching function；If the most described source base station is still So it is in overload state, the most again initiates resource request information to adjacent base station.

Step 105, determines target BS according to described response successful information；

In one preferred embodiment of the invention, described response successful information includes in respective base station The resources left capacity parameter of community, described step 105 can include following sub-step:

Sub-step S11, obtains the adjacent base station number of all returns described response successful information；

Sub-step S13, when the adjacent base station number of described return described response successful information is one, Using the described adjacent base station of response successful information that returns as target BS；

Sub-step S14, when the described adjacent base station number returning response successful information is multiple, by institute State the multiple adjacent base station composition candidate list of base stations returning response successful information；

Sub-step S15, selects the neighbour that resources left capacity parameter is maximum from described candidate list of base stations The base station at place, community is as target BS.

In implementing, if the base station replying response successful information is one, by described reply The base station of response successful information is as target BS, when the response successful information receiving multiple adjacent base station Time, the described multiple adjacent base station replying response successful information is added candidate list of base stations by source base station, And the adjacent base station therefrom selecting resources left capacity parameter maximum carries out user's migration, and (base station can To be the target BS of multiple source base station).

In one preferred embodiment of the invention, described sub-step S15 may further include as Lower sub-step:

Sub-step S151, obtains same frequency or alien-frequency district selection priority that source base station is formerly arranged；

In implementing, source base station can be obtained and formerly arrange base station carries out load balancing switching Same frequency or the selection priority of alien-frequency district.Arranging of described selection priority can include with frequency Different from the selection priority of alien-frequency district；The selection priority of co-frequency cell is higher than alien-frequency district Select priority；The selection priority of co-frequency cell is less than the selection priority etc. of alien-frequency district.

Sub-step S153, if described co-frequency cell is identical with the selection priority of alien-frequency district, then selects Select the base station at the maximum adjacent cell place of resources left capacity parameter as target BS；

In the present embodiment, if described co-frequency cell is identical with the selection priority of alien-frequency district, choosing Select the base station at the maximum adjacent cell place of described resources left capacity parameter as target BS, if two When the resources left capacity parameter of person is the most identical, then select resources left capacity parameter in co-frequency cell The base station at maximum adjacent cell place is as target BS.

Sub-step S155, if described co-frequency cell is different from the selection priority of alien-frequency district, then obtains Take the maximum of resources left capacity parameter in co-frequency cell, and in alien-frequency district, resources left is held The maximum of amount parameter, and calculate both differences；

Sub-step S157, if the selection priority of described co-frequency cell is higher than described alien-frequency district, and Resources left capacity parameter in co-frequency cell is little compared with the resources left capacity parameter in alien-frequency district, Then when described difference is more than or equal to the second predetermined threshold value, resources left in alien-frequency district is selected to hold The base station at the adjacent cell place that amount parameter is maximum is target BS；Preset less than second in described difference During threshold value, in selection co-frequency cell, the base station at the adjacent cell place that resources left capacity parameter is maximum is Target BS；

Sub-step S159, if the selection priority of described alien-frequency district is higher than described co-frequency cell, and Resources left capacity parameter in alien-frequency district is little compared with the resources left capacity parameter in co-frequency cell, Then when described difference is more than or equal to the second predetermined threshold value, resources left in co-frequency cell is selected to hold The base station at the adjacent cell place that amount parameter is maximum is target BS；Preset less than second in described difference During threshold value, in selection alien-frequency district, the base station at the adjacent cell place that resources left capacity parameter is maximum is Target BS.

In the present embodiment, if described co-frequency cell is different from the selection priority of alien-frequency district, and The resources left capacity parameter of high priority adjacent cell is the least, and the resource of low priority adjacent cell remains Remaining capacity parameter is the biggest, then subtracted by the resources left capacity parameter maximum of low priority adjacent cell Remove the resources left capacity parameter maximum of high priority adjacent cell, if the difference obtained is more than second Predetermined threshold value, wherein, described second predetermined threshold value again can claim equalize adjacent cell select threshold value ( When judging the selection priority with, alien-frequency district, due to the base station, adjacent cell place of low priority Load evaluation value is relatively low, when the difference of its load evaluation value with high priority is greater than certain thresholding, The base station, adjacent cell place selecting low priority is target BS, and this threshold value is equilibrium adjacent cell choosing Select threshold value), source base station selects the low selection priority adjacent cell institute that resources left capacity parameter is maximum Base station carry out user's migration as target；Otherwise, source base station selects resources left capacity parameter The maximum high base station selecting priority adjacent cell place carries out user's migration as target.

Step 107, if described target BS meets default base station switching condition, to described target base Station carries out user's migration.

In one preferred embodiment of the invention, whether described target BS meets default base station Switching condition, can adopt and judge with the following method:

(1) the resources left capacity parameter of the Target cell in acquisition target BS；

(2) judge whether the resources left capacity parameter of the Target cell in described target BS is more than Or equal to the 5th predetermined threshold value；

(3) if described resources left capacity parameter is more than or equal to the 5th predetermined threshold value, in described time Select and station list is deleted described target BS, generate new candidate list of base stations；

(4) from described new candidate list of base stations, determine target BS, return described acquisition target The step of the resources left capacity parameter of the Target cell in base station；

(5) if described candidate list of base stations does not meet the target base of default base station switching condition Stand, then the adjacent base station of other from described candidate list of base stations selects target BS.

Specifically, the number of the community in target BS can be one, in described target BS Community be referred to as Target cell, if the resources left capacity of the Target cell in current goal base station Parameter more than the 5th predetermined threshold value, described 5th predetermined threshold value be properly termed as equilibrium receive threshold value ( During load balancing, target BS gives the available resources that load balancing moves into user to be had certain Limiting, stop too much user to move into, this limits value is equilibrium and receives threshold value) and source base station When load evaluation value is higher than resource request threshold value, source base station is other neighboring stations in candidate list of base stations Send resource request information, will again choose optimal objective base station from candidate list of base stations and use Family migrates, and regenerates candidate list of base stations.If it is the fullest in described candidate list of base stations The adjacent base station that foot requires, resource is initiated in all adjacent base station outside candidate list of base stations by source base station please Seek information, and generate new candidate list of base stations, the most again choose optimal objective base station and use Family migrates.

In one preferred embodiment of the invention, described step 107 can include following sub-step:

Sub-step S21, if the resources left capacity parameter of the Target cell in described target BS is less than 5th predetermined threshold value, sends handover request to described target BS；

Sub-step S23, receives the confirmation message of target BS；

Specifically, if the resources left capacity parameter of the Target cell in described target BS is less than 5th predetermined threshold value, source base station sends handover request (ACK message) to the target BS selected and accuses Knowing that this base station, as target BS, is carried out target BS switching and prepared, target BS is replied confirmation and is disappeared Cease laggard line period reports resource status more new information.

Sub-step S25, obtains all users being active under source base station, and by described User configures measurement, receives the measurement report of described user, to obtain described user at Target cell Signal intensity, adjacent cell according to described adjacent cell signal intensity by weak, described user being carried out by force Sequence；

Sub-step S27, chooses the preceding one or more users of sequence and carries out migrating preparation；

Sub-step S29, receives the resource status more new information that target BS reports, described resource status The resources left capacity parameter that Target cell during more new information includes target BS is current, if described Resources left capacity parameter is more than the 3rd predetermined threshold value, the one or more user is migrated.

Wherein, described 3rd predetermined threshold value is for judging the money of the Target cell in current target BS Whether source residual capacity parameter allows active user to access, if the money of the Target cell in target BS Source residual capacity parameter then allows user to access more than the 3rd predetermined threshold value.In embodiments of the present invention, Source base station receives after the confirmation message of target BS use being active all under this base station Family (user of described state of activation includes the user carrying out business and do not carries out the user of business) is entered Row A3(triggers the event measured) measure, heavily join particularly as follows: source base station sends to activated state user Putting message, wherein with measuring the relevant informations such as ID, user can be to source base after receiving reconfiguration message Stand and send measurement report, measurement report mainly comprises the RSRP of this community and adjacent cell (Reference Signal Receiving Power, Reference Signal Received Power) and RSRQ Information such as (Reference Signal Receiving Quality, Reference Signal Received Quality).Source base Stand and receive the letter of Target cell (Target cell refers to the community in target BS) according still further to user Number intensity carries out, by by force to weak arrangement, receiving the user that adjacent cell RSRP is strong or RSRQ is high and entering The priority of row load balancing switching is high.

It should be noted that described A3 measures a kind of example of the only embodiment of the present invention, at base It can also be provided that other affairs in standing, the embodiment of the present invention to this without being any limitation as.

It addition, in order to reduce the signaling traffic load of X2 mouth between source base station and target BS, for following several One of the situation of kind or its combination, source base station sends stopping message informing target BS to be stopped reporting money Source state more new information:

(1) load control switch of source base station is closed；

(2) the load evaluation value of source base station be less than or equal to the 6th predetermined threshold value, the wherein said 6th Predetermined threshold value is properly termed as recovering threshold value (after source base station has migrated user, due to load evaluation value After a threshold value, send stop message, close Load balanced control switching function, i.e. this Thresholding is for recovering threshold value)；

(3) load control switch of target BS is closed；

(4) the resources left capacity parameter of the Target cell in target BS is pre-more than or equal to the 5th If threshold value；

(5) source base station sends handover request, and described handover request includes being ready for migrated users Resource occupation minima, when the Target cell in target BS Current resource residual capacity parameter with Load balancing receives the difference of threshold value less than the resource occupation minima being ready for migrated users Time, target BS notice source base station switching prepares unsuccessfully, and source base station stops user and migrates, and notifies Target BS stops reporting resource status more new information.

The embodiment of the present invention, on existing load-balancing technique, adds optimum equalization switching target Automatically selecting of base station (adjacent cell), makes what the use of user resources more rationalized to be assigned to difference In base station, improve the utilization rate that Internet resources are overall；The present invention also improves spatial load forecasting and opens simultaneously The algorithm opening and closing, optimizes load-balancing algorithm, and decreases load balancing to a certain extent The signaling traffic load of switching X2 interface.

Embodiment two

In the present embodiment, the step shown in Fig. 1 can be reduced to load balancing judgement flow process, Target BS selects flow process, three flow processs of load balancing switching flow, is described in detail below:

One, load balancing judgement flow process: with reference to the flow process of the load balancing judgement flow process shown in Fig. 2 Figure, when the load evaluation value of source base station is higher than resource request threshold value, this base station is to all adjacent bases Standing and initiate resource request information, resource is replied after receiving resource request information in one or more adjacent base stations Response message, shown resource response information can include responding successful information and response failure information, Particularly as follows:

1, when response failure information is all replied in all adjacent base stations, source base station is again to all adjacent base stations Send resource request information, please until having adjacent base station reply response successful information or arrival to send resource The number of times seeking information arrives the number of retransmissions of resource request；

2, source base station send resource request information number of times arrive resource request number of retransmissions time, mistake After certain time thresholding is waited, if this base station is still in overload state, the most periodically send out Play resource request information, until there being adjacent base station to reply response successful information or the load evaluation of source base station Value is less than recovering threshold value, and (wherein the certain time thresholding of source base station initiation resource request information is should The dormant state of base station, is activated state during initiation resource request information)；

3, when source base station is in resource request dormant state, after receiving the resource request information of adjacent base station, This base station is entered activated state by dormant state, the most periodically carries out initiating resource request information.

Two, target BS selects flow process: select the flow process of flow process with reference to the target BS shown in Fig. 3 Figure, (containing resource in this response successful information after the response successful information receiving multiple adjacent base station Residual capacity parameter, beneficially source base station choose target BS), reply is responded successful information by source base station Adjacent base station add candidate list of base stations, and therefrom select the maximum adjacent base of resources left capacity parameter Station carries out user's migration, and (base station can be the target base that multiple source base station load balancing switches Stand), (note: when only receiving the resource status response replied an adjacent base station, do not carry out target base Stand and select flow process), particularly as follows:

1, when arranging the same frequency meeting equilibrium switching or alien-frequency district selects priority difference, preferentially Select resources left capacity in the cell type (co-frequency cell or alien-frequency district) that priority is high maximum The base station at adjacent cell place carry out user's migration；Or, selecting preferential with frequency or alien-frequency district Level is different, and when the resources left capacity parameter of high priority adjacent cell is the least, if described low excellent The resources left capacity parameter maximum of first level adjacent cell deducts the resources left of high priority adjacent cell When the difference that maximum capacity obtains selects threshold value more than or equal to equilibrium adjacent cell, source base station selects Select the base station at the adjacent cell place that resources left capacity parameter is maximum in low priority adjacent cell to use Family migrates；If the resources left capacity parameter maximum of described low priority adjacent cell deducts high preferential The difference that the resources left maximum capacity of level adjacent cell obtains selects threshold value less than equilibrium adjacent cell Time, source base station selects the adjacent cell place that in high priority adjacent cell, resources left capacity parameter is maximum Base station carry out user's migration；

2, arranging when selecting priority identical with frequency or alien-frequency district of load balancing switching, source base The base station at the adjacent cell place that resources left capacity is maximum in prioritizing selection co-frequency cell of standing carries out user Migrate；

If the resources left capacity parameter of the Target cell in 3 current goal base stations exceedes equilibrium and connects Receive threshold value and source base station load evaluation value higher than resource request threshold value time, source base station is to candidate's base Other adjacent base stations in list of standing send resource request information, again will choose from candidate list of base stations Optimal objective base station carries out user's migration, and regenerates candidate list of base stations；

If not meeting the adjacent base station required in 4 candidate list of base stations, source base station can be to candidate Resource request information is initiated in all adjacent base station outside station list, and generates new candidate list of base stations, The most again choose optimal objective base station and carry out user's migration.

Three, load balancing switching flow: with reference to the flow process of the load balancing switching flow shown in Fig. 4 Figure source base station to select target BS send ACK message inform this base station as target BS, it Rear target BS periodically reports resource status more new information, particularly as follows:

1, when the load evaluation value of source base station is higher than migrating threshold value (when source base station opens load balancing After controlling switching function, after load meansigma methods again raises and arrives certain threshold value, to target base Stand transmission handover preparation request, and the user for preparing to move out, and this threshold value is for migrating threshold value) and mesh When the resources left capacity parameter of the Target cell in mark base station receives threshold value less than load balancing, Source base station informs that target BS switching prepares, and target BS replys ACK message；

2, after source base station receives ACK message, to users being active all under this base station Carrying out A3 measurement, the RSRP intensity size receiving Target cell according to user arranges, The priority of load balancing switching strong for RSRP is high；

3, source base station may select one or more user and sends handover request and migrate, user's success Until source base station load evaluation value is less than migrating threshold value after migration, source base station stops user and migrates.

Further, in order to reduce the signaling traffic load of X2 mouth, for following several situations, source base station Can send message inform target BS stop resource status update information reporting:

1, source base station closes load control switch or its load evaluation value less than recovering threshold value；

2, target BS closes load control switch, then terminate resource status and update information reporting；

3, other users attachment is had to cause the resources left capacity of its Target cell due to target BS When parameter receives threshold value higher than load balancing, source base station updates according to periodic resource status and disappears Breath learns this load condition of target BS, then notice target BS stops reporting resource status to update Message；

4, after source base station carries out A3 measurement transmission handover request, when the target in target BS is little The Current resource residual capacity parameter in district and load balancing receive the difference of threshold value less than being ready for During the resource occupation minima of migrated users, target BS notice source base station switching prepares unsuccessfully, source Base station stops user and migrates, and notifies that target BS stops reporting resource status more new information；

5, when source base station sends handover request message, due to the Target cell in target BS now Resources left capacity parameter higher than load balancing receive threshold value, target BS notice source base station cut Exchanging for and disappear, source base station stops user and migrates, and notifies that target BS stops reporting resource status to update Message.

It should be noted that for embodiment of the method, in order to be briefly described, therefore it is all expressed as A series of combination of actions, but those skilled in the art should know, and the present invention is by being retouched The restriction of the sequence of movement stated because according to the present invention, some step can use other orders or Person is carried out simultaneously.Secondly, those skilled in the art also should know, reality described in this description Executing example and belong to preferred embodiment, involved action and module not necessarily present invention institute is necessary 's.

Embodiment three

With reference to Fig. 5, it is shown that the structural frames of the device embodiment of a kind of load of base station of present invention equilibrium Figure, specifically includes with lower module:

Resource request information initiation module 501, for when source base station is in overload state, to neighbour Resource request information is initiated in base station；

Resource response information receiving module 503, for receiving the resource response information of described adjacent base station, Described resource response information includes responding successful information；

Target BS determines module 505, for determining target BS according to described response successful information；

In one preferred embodiment of the invention, described response successful information includes in respective base station The resources left capacity parameter of community, it is as follows that described target BS determines that module 505 can include Submodule:

In one preferred embodiment of the invention, described second target BS determines that submodule enters one Step can include such as lower unit:

Second target BS determines unit, for the selection priority in described co-frequency cell higher than institute The resources left capacity parameter stated in alien-frequency district, and co-frequency cell remains compared with the resource in alien-frequency district Remaining capacity parameter hour, and when described difference is more than or equal to the second predetermined threshold value, select alien frequencies In community, the base station at the adjacent cell place that resources left capacity parameter is maximum is target BS；Described When difference is less than the second predetermined threshold value, select the neighbour that in co-frequency cell, resources left capacity parameter is maximum The base station at place, community is target BS；

User's transferring module 507, for meeting default base station switching condition at described target BS Time, carry out user's migration to described target BS.

In one preferred embodiment of the invention, whether described target BS meets default base station Switching condition, adopts and judges with the following method:

In one preferred embodiment of the invention, described user's transferring module 507 can include as Lower submodule:

Handover request sends submodule, and the resource for the Target cell in described target BS remains When remaining capacity parameter is less than the first predetermined threshold value, send handover request to described target BS；

User's sorting sub-module, for obtaining all users being active under source base station, and By configuring measurement to described user, receive the measurement report of described user, to obtain described user At the signal intensity of Target cell, according to described signal intensity by weak, described user being carried out by force Sequence；

Preferably, described device also includes:

The Load balanced control switch of source base station cuts out；

And/or

The Load balanced control switch of target BS cuts out；

And/or

Preferably, described device also includes:

For the device embodiment shown in Fig. 5, due to its phase basic with preceding method embodiment Seemingly, so describe is fairly simple, relevant part sees the part of embodiment of the method and illustrates.

Each embodiment in this specification all uses the mode gone forward one by one to describe, each embodiment emphasis Illustrate is all the difference with other embodiments, identical similar part between each embodiment See mutually.For device embodiment, due to itself and embodiment of the method basic simlarity, So describe is fairly simple, relevant part sees the part of embodiment of the method and illustrates.

Those skilled in the art it should be appreciated that embodiments of the invention can be provided as method, system, Or computer program.Therefore, the present invention can use complete hardware embodiment, complete software real The form of the embodiment in terms of executing example or combining software and hardware.And, the present invention can use One or more computer-usable storage medium wherein including computer usable program code (include But it is not limited to disk memory, CD-ROM, optical memory etc.) the upper computer program product implemented The form of product.

The present invention is with reference to method, equipment (system) and computer program according to embodiments of the present invention The flow chart of product and/or block diagram describe.It should be understood that can be realized by computer program instructions Each flow process in flow chart and/or block diagram and/or square frame and flow chart and/or square frame Flow process in figure and/or the combination of square frame.These computer program instructions can be provided to general-purpose computations The processor of machine, special-purpose computer, Embedded Processor or other programmable data processing device with Produce a machine so that held by the processor of computer or other programmable data processing device The instruction of row produces for realizing at one flow process of flow chart or multiple flow process and/or one, block diagram The device of the function specified in square frame or multiple square frame.

These computer program instructions may be alternatively stored in and can guide at computer or other programmable datas In the computer-readable memory that reason equipment works in a specific way so that being stored in this computer can The instruction read in memorizer produces the manufacture including command device, and this command device realizes in flow process The merit specified in one flow process of figure or multiple flow process and/or one square frame of block diagram or multiple square frame Energy.

These computer program instructions also can be loaded into computer or other programmable data processing device On so that on computer or other programmable devices, perform sequence of operations step to produce calculating The process that machine realizes, thus the instruction performed on computer or other programmable devices provides and is used for Realize in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame The step of the function specified.

Although preferred embodiments of the present invention have been described, but those skilled in the art once The substantially creative concept of cicada, then can make other change and amendment to these embodiments.So, Claims are intended to be construed to include preferred embodiment and fall into all changes of the scope of the invention More and amendment.

Finally, in addition it is also necessary to explanation, in this article, the relation of such as first and second or the like Term is used merely to separate an entity or operation with another entity or operating space, and not Necessarily require or imply and there is the relation of any this reality or suitable between these entities or operation Sequence.And, term " includes ", " comprising " or its any other variant are intended to nonexcludability Comprise, so that include that the process of a series of key element, method, article or equipment not only include Those key elements, but also include other key elements being not expressly set out, or also include for this The key element that process, method, article or equipment are intrinsic.In the case of there is no more restriction, The key element limited by statement " including ... ", it is not excluded that including the process of described key element, side Method, article or equipment there is also other identical element.

Above the method and device of a kind of load of base station provided by the present invention equilibrium is carried out in detail Introducing, principle and the embodiment of the present invention are set forth by specific case used herein, The explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Meanwhile, For one of ordinary skill in the art, according to the thought of the present invention, in detailed description of the invention and should All will change with in scope, in sum, this specification content should not be construed as this Bright restriction.

Claims

1. the method for a load of base station equilibrium, it is characterised in that including:

If described target BS meets default base station switching condition, use to described target BS Family migrates；

Wherein, described response successful information includes the resources left capacity ginseng of the community in respective base station Number, described foundation response successful information determines that the step of target BS includes:

The adjacent cell place of resources left capacity parameter maximum is selected from described candidate list of base stations Base station is as target BS；

Whether described target BS meets default base station switching condition, adopts and judges with the following method:

Method the most according to claim 1, it is characterised in that judge source in the following way Whether base station is in overload state:

Method the most according to claim 1, it is characterised in that described from candidate list of base stations The base station at the adjacent cell place that middle selection resources left capacity parameter is maximum is as the sub-step of target BS Suddenly farther include:

Method the most according to claim 1, it is characterised in that if described target BS meets The base station switching condition preset, the step carrying out user's migration to described target BS includes:

Receive the confirmation message of target BS；

Method the most according to claim 4, it is characterised in that also include:

The Load balanced control switch of source base station cuts out；

And/or

The Load balanced control switch of target BS cuts out；

And/or

Method the most according to claim 1, it is characterised in that the resource of described adjacent base station is rung Answering information also to include responding failure information, the state of described source base station includes dormant state, described method Also include:

Method the most according to claim 6, it is characterised in that described method also includes:

8. the device of a load of base station equilibrium, it is characterised in that including:

User's transferring module, is used for when described target BS meets default base station switching condition, User's migration is carried out to described target BS；

Wherein, described response successful information includes the resources left capacity ginseng of the community in respective base station Number, described target BS determines that module includes:

Second target BS determines submodule, for selecting resource to remain from described candidate list of base stations The base station at the adjacent cell place that remaining capacity parameter is maximum is as target BS；

From described new candidate list of base stations, determine target BS, return described acquisition target BS In the resources left capacity parameter of Target cell；

Device the most according to claim 8, it is characterised in that judge source in the following way Whether base station is in overload state:

Device the most according to claim 8, it is characterised in that described second target BS Determine that submodule farther includes:

11. devices according to claim 8, it is characterised in that described user's transferring module Including:

12. devices according to claim 11, it is characterised in that also include:

The Load balanced control switch of source base station cuts out；

And/or

The Load balanced control switch of target BS cuts out；

And/or

13. devices according to claim 8, it is characterised in that the resource of described adjacent base station Response message also includes responding failure information, and the state of described source base station includes dormant state, described dress Put and also include:

14. devices according to claim 13, it is characterised in that described device also includes: