CN105916178B - A kind of method and device of load balancing - Google Patents
A kind of method and device of load balancing Download PDFInfo
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- CN105916178B CN105916178B CN201610399060.4A CN201610399060A CN105916178B CN 105916178 B CN105916178 B CN 105916178B CN 201610399060 A CN201610399060 A CN 201610399060A CN 105916178 B CN105916178 B CN 105916178B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 230000006854 communication Effects 0.000 abstract description 51
- 238000004891 communication Methods 0.000 abstract description 50
- 230000008569 process Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 7
- 230000002776 aggregation Effects 0.000 description 6
- 238000004220 aggregation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000023402 cell communication Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
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Classifications
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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
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/16—Performing reselection for specific purposes
- H04W36/22—Performing reselection for specific purposes for handling the traffic
Abstract
The embodiment of the invention discloses a kind of method and devices of load balancing, are related to field of communication technology, can improve the communication quality of terminal in the case where proof load equilibrium.The method of the embodiment of the present invention comprises determining that first community, the first community are the cell that signal strength is greater than first threshold in the adjacent cell of main plot, and the main plot is the cell in overload；When the first community includes at least two cell, determine that the baseline scale value of each first community, the baseline scale value are used to indicate average signal Yu interference plus noise the ratio SINR of all terminals in cell；The first community for determining that the baseline scale value is greater than second threshold is Target cell；Target terminal in the main plot is accessed into the Target cell.The present invention is suitable for load balancing process.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of method and devices of load balancing.
Background technique
In communication process, terminal can select PCell (English: Primary Cell, Chinese: main according to self-demand
Cell), it so frequently can lead to more under the same eNB (English: Evolved Node B, Chinese: evolved base station)
It is in the presence of that load is uneven between a cell.Great amount of terminals may be resident in i.e. some cells, and because of the resource in the cell
It is limited, and causes network congestion, influence the communication quality of terminal in cell；And in other cells, then because terminal quantity compared with
Less or the number of services that is carrying out is less and excessive resource redundancy occur, also means that, the resource in these cells
It is not fully used, causes the waste of frequency spectrum resource.
In order to solve the problems, such as load imbalance between cell, when eNB detects the load of cell more than pre-determined threshold,
Determine cell-overload, then starting load balancing procedure.Namely by the way that the part in the cell for being in overload is whole
End, which switches to, around loads lesser cell, to make to reach load balancing between cell.
However, realizing load balancing using aforesaid way, the load state of each cell has been taken into consideration only.Also it just means
, when terminal switches to Target cell from source cell, although ensure that the communication quality of other terminals in source cell, the end
After terminating Target cell, often makes the load rise of Target cell, not only influenced in Target cell each end in this way
The communication quality at end, while not can guarantee the communication quality of the terminal itself yet.
Summary of the invention
The embodiment of the present invention provides a kind of method and device of load balancing, can proof load equilibrium in the case where,
Improve the communication quality of terminal.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, the embodiment of the present invention provides a kind of method of load balancing, which comprises
Determine that first community, the first community are that signal strength is greater than the small of first threshold in the adjacent cell of main plot
Area, the main plot are the cell in overload；
When the first community includes at least two cell, the baseline scale value of each first community, the base are determined
Quasi- ratio value is used to indicate average signal Yu interference plus noise the ratio SINR of all terminals in cell；
The first community for determining that the baseline scale value is greater than second threshold is Target cell；
Target terminal in the main plot is accessed into the Target cell.
Second aspect, the embodiment of the present invention provide a kind of device of load balancing, and described device includes:
Determination unit, for determining that first community, the first community are that signal strength is greater than in the adjacent cell of main plot
The cell of first threshold, the main plot are the cell in overload；
The determination unit is also used to determine each first community when the first community includes at least two cell
Baseline scale value, the baseline scale value is used to indicate average signal Yu the interference plus noise ratios of all terminals in cell
SINR；
The determination unit, the first community for being also used to determine that the baseline scale value is greater than second threshold is that target is small
Area；
Switch unit is small for the target terminal in the main plot to be accessed the target that the determination unit determines
Area.
The method and device of a kind of load balancing provided in an embodiment of the present invention, by signal in the cell in overload
The adjacent cell that intensity is greater than first threshold is determined as first community, will be in cell if first community includes at least two cells
The first community that the average SINR of all terminals is greater than second threshold is determined as Target cell, later, by the mesh in overloaded cells
Mark terminal, which switches in Target cell, to be communicated.Target cell is switched to from source cell because of terminal in compared to the prior art,
And make the load rise of Target cell, to influence the communication quality of each terminal in Target cell, while it not can guarantee yet and connecing
Enter the communication quality of the terminal after Target cell itself, the present invention is averaged by all terminals in signal strength and cell
SINR screens the adjacent cell of overloaded cells, using the preferable cell of communication quality as Target cell, so that terminal is from source
When cell switches to Target cell, each terminal in Target cell will not because of Target cell load rise and influence to communicate
Quality.It is communicated simultaneously because terminal has accessed the preferable cell of communication quality, also can guarantee the communication quality of terminal itself.
Therefore, the communication quality of terminal can be improved in the case where proof load equilibrium.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is a kind of method flow diagram of load balancing provided in an embodiment of the present invention；
Fig. 2 is the method flow diagram of another load balancing provided in an embodiment of the present invention；
Fig. 3 is the method flow diagram of another load balancing provided in an embodiment of the present invention；
Fig. 4 is the method flow diagram of another load balancing provided in an embodiment of the present invention；
Fig. 5 is the method flow diagram of another load balancing provided in an embodiment of the present invention；
Fig. 6 is a kind of apparatus structure schematic diagram of load balancing provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of method of load balancing, as shown in Figure 1, this method can be executed by base station, it should
Method flow includes:
101, first community is determined.
Wherein, first community is the cell that signal strength is greater than first threshold in the adjacent cell of main plot, and main plot is place
In the cell of overload.
Base station receives the measurement report that terminal reports, wherein measurement report includes main plot and its neighbour where target terminal
RSRP (English: Reference Signal Receiving Power, Chinese: Reference Signal Received Power) measurement knot of cell
In fruit, the resources occupation rate of each cell, the terminal quantity of each cell and cell each terminal SINR (English:
Signal to Interference plus Noise Ratio, Chinese: Signal to Interference plus Noise Ratio).
Each cell has certain bearing capacity, if being more than this bearing capacity, overloads.It counts and assesses and is each
The loading condition of cell, it may be considered that the parameter that will affect cell load may include maximum terminal quantity, using wireless
At least one of resource, hardware load index etc..Terminal quantity evaluation can be used to characterize the load feelings of cell in the present invention
Condition.
According to the terminal quantity of cell each in measurement report, the payload size of the available each cell of determination, in conjunction with
Preset overload threshold, wherein overload threshold is fixedly adjustable whole for distinguishing one of overloaded cells and non-overloaded cell
Threshold value.In embodiments of the present invention, the cell that can determine that terminal quantity is greater than overload threshold is overloaded cells, and terminal quantity is small
In or equal to overload threshold cell be non-overloaded cell.When base station determines that main plot is overloaded cells, preset time is obtained
The measurement report of interior generation, the RSRP of the adjacent cell of main plot where obtaining target terminal.Wherein, when preset time refers to current
A period of time before quarter, at the time of current time refers to that base station determines main plot overload.Although in view of the state meeting of cell
Changed with the variation of time, but the state at two neighboring moment does not have bigger difference, therefore, current time it
The state of cell can represent the cell status at current time substantially in preceding a period of time.It also means that, in this period
Data collected are able to reflect the state of current time main plot.If the RSRP of adjacent cell is greater than first threshold Th_1, really
The fixed adjacent cell is first community.It should be noted that overload threshold, preset time here, can be those skilled in the art
The constant pre-set according to historical experience or actual demand.
102, when first community includes at least two cell, the baseline scale value of each first community is determined.
Wherein, baseline scale value is used to indicate the average SINR of all terminals in cell.
I-th of first community is obtained by calculating according to formula Proportion_Ti=∑ (SINRk_Ti)/Num_Ti
Baseline scale value.
Wherein, SINRk_Ti is the SINR value that k-th of terminal reports in i-th of first community of current time, and i and k are
Positive integer greater than 0, Num_Ti are the terminal quantity that each first community reports within a preset time.
103, the first community for determining that baseline scale value is greater than second threshold is Target cell.
As the baseline scale value Proportion_Ti of i-th of first community, meet formula Proportion_Ti >=Th_2
When, determine that the first community is Target cell.Wherein, Th_2 is second threshold.
104, the target terminal in main plot is accessed into Target cell.
After determining Target cell, base station can send to target terminal and reconfigure RRC (English: Radio Resource
Control, Chinese: radio resource control) Connection Reconfigration message, triggering target terminal initiation
Switching action；After target terminal completes cell switching, target terminal, which sends to reconfigure to base station, completes RRC Connection
Reconfigration Complete message, signals base terminal have accessed Target cell；Base station receives RRC
After Connection Reconfigration Complete message, the resource that the terminal is occupied in source cell, source cell are discharged
Refer to the main plot accessed before target terminal access Target cell.
A kind of method of load balancing provided in an embodiment of the present invention is big by signal strength in the cell in overload
It is determined as first community in the adjacent cell of first threshold, if first community includes at least two cells, by ends all in cell
The first community that the average SINR at end is greater than second threshold is determined as Target cell, later, by the target terminal in overloaded cells
It switches in Target cell and is communicated.Target cell is switched to from source cell because of terminal in compared to the prior art, and makes mesh
The load rise for marking cell, to influence the communication quality of each terminal in Target cell, while not can guarantee access target yet
The communication quality of the terminal itself after cell, the present invention is by the average SINR of all terminals in signal strength and cell to mistake
The adjacent cell for carrying cell is screened, using the preferable cell of communication quality as Target cell, so that terminal switches from source cell
When to Target cell, each terminal in Target cell will not because of Target cell load rise and influence communication quality.Together
When communicated since terminal has accessed the preferable cell of communication quality, also can guarantee the communication quality of terminal itself.Therefore, energy
Enough in the case where proof load equilibrium, the communication quality of terminal is improved.
In order to ensure terminal is during carrying out cell switching, will not be caused on a large scale because change of network environment is excessive
Network migration terminal can be switched to communication quality and main plot phase in an implementation of the embodiment of the present invention
Close cell is communicated.Therefore, on the basis of implementation as shown in Figure 1, it is also implemented as reality as shown in Figure 2
Existing mode.Wherein, the first community that step 103 determines that baseline scale value is greater than second threshold is Target cell, can be specifically real
Now it is step 1031, is executing step 102 when first community includes at least two cell, determining the benchmark of each first community
After ratio value, step 105 can also be performed to step 107:
1031, when there are when a second community, determine that second community is Target cell in first community.
Wherein, second community is the cell that benchmark ratio value is greater than second threshold.
105, when there are the baseline scale values and target that when at least two second communities, determine main plot in first community
The baseline scale value of the secondary cell of terminal.
The baseline scale of main plot is obtained by calculating according to formula Proportion_P=∑ (SINRk_P)/Num_P
Value Proportion_P.Wherein, SINRk_P is the SINR value that reports of k-th of terminal in current time main plot, Num_P be
In preset time, terminal quantity that main plot reports.
The auxiliary of target terminal is obtained by calculating according to formula Proportion_P_S=∑ (SINRk_S)/Num_P_S
The baseline scale value Proportion_P_S of cell.Wherein, SINRk_S is k-th in the secondary cell of current target terminal
The SINR value that terminal reports, Num_P_S are the terminal quantity that the secondary cell of target terminal reports within a preset time.
106, the average value of the baseline scale value of the baseline scale value of main plot and each secondary cell of target terminal is determined.
107, the second community for determining that the first absolute value is less than third threshold value is Target cell.
Wherein, the first absolute value is the absolute value of the baseline scale value of second community and the difference of average value.
As the baseline scale value Proportion_Ti of i-th of second community, meet formula | Proportion_Ti-
(Proportion_P+Proportion_P_S)/(m+1) | when≤Th_3, determine that the first community is Target cell.Wherein, m
For the positive integer less than or equal to 5, the number of the secondary cell of target terminal is indicated, Th_3 is third threshold value.Due in LTE (English
Text: Long Term Evolution, Chinese: long term evolution) in Rel-10 agreement, a terminal is at best able to 5 auxiliary loads of polymerization
Wave, therefore, m are the positive integer less than or equal to 5.
A kind of method of load balancing provided in an embodiment of the present invention, the cell that baseline scale value is greater than second threshold are true
It is set to second community, if there are a second communities in first community, it is determined that the second community is Target cell, if first is small
There are at least two second communities in area, it is determined that baseline scale value and average value are less than the cell of third threshold value for target
Cell.When switching to Target cell from source cell because of terminal in compared to the prior art, and make the load rise of Target cell, from
And the communication quality of each terminal in Target cell is influenced, it not can guarantee the communication quality of the terminal itself, the present invention passes through yet
Baseline scale value and the difference of average value screen second community, and terminal can be switched to communication quality and main plot phase
Close cell is communicated, can be with so that too big variation will not occur for the communication quality for accessing cell before and after terminal switching cell
The decline for accessing cell communication quality behind terminal switching cell is avoided, causes to cause terminal to cut again because terminal communication quality is poor
Change, and can be to avoid terminal switching cell after, Target cell load increase, cause because Target cell communication quality decline due to make
Switched out at terminal in Target cell, thus caused by network Large-scale Migration.Therefore, can be guaranteed using the above method
In the case where load balancing, the communication quality of terminal is improved, and can be to avoid big caused by due to change of network environment is excessive
Scale network migration.
In order to improve the communication quality after terminal access Target cell, in an implementation of the embodiment of the present invention,
Target cell needs to possess stronger carrier aggregation capacity and stronger resource transmission ability, and also meaning that can be by mesh
Mark terminal switches to the stronger cell of integration capability and is communicated.Wherein, integration capability is for indicating carrier aggregation capacity and money
Source transmittability.Therefore, on the basis of implementation as shown in Figure 2, it is also implemented as realization side as shown in Figure 3
Formula.Wherein, the second community that step 107 determines that the first absolute value is less than third threshold value is Target cell, can be implemented as
Step 1071, in the baseline scale of each secondary cell for the baseline scale value and target terminal for executing the determining main plot of step 106
After the average value of value, step 108 and step 109 can also be performed:
1071, when there are when a third cell, determine that third cell is Target cell in second community.Wherein, third
Cell is the cell that the first absolute value is less than third threshold value.
108, when, there are when at least two third cells, determining the ability parameter of each third cell in second community.
Wherein, ability parameter is for reflecting that the quantity of secondary cell that third cell can polymerize, the resource of third cell account for
With the resources occupation rate for the secondary cell that rate and third cell can polymerize.
According to formula Capability_Ti_Sj=α [(1+n)/5]+β [∑ (PRB_Ti+PRB_Ti_Sj)/n], and alpha+beta
=1, by calculating, obtain the ability parameter Capability_Ti_Sj of i-th of third cell.
Wherein, α is the carrier aggregation capacity factor, for more than or equal to 0, and be less than or equal to 1 numerical value, for indicating small
The weight of cell carrier aggregation capacity in area's integration capability.β is resource transmission capability facfor, for more than or equal to 0, and be less than or
Number equal to 1, for indicating the weight of local resource transmittability in cell integration capability.It should be noted that the value of α, β can
It is expected that situation or terminal traffic demand are set according to network, expectation target cell has stronger carrier aggregation capacity
When, biggish α can be set, when expectation target cell has stronger resource transmission ability, biggish β can be set.
N is the positive integer less than or equal to 5, indicates that i-th of third cell corresponds to the number of secondary carrier, PRB_Ti i-th
The resource idleness of a third cell, PRB_Ti_Sj are the resource idleness of corresponding j-th of the secondary cell of i-th of third cell.
In embodiments of the present invention, the resource free time can be obtained according to the resources occupation rate in the measurement report obtained in preset time
Rate, i are greater than 0 positive integer, and j is the positive integer less than or equal to n.
109, the third cell for determining that ability parameter is greater than the 4th threshold value is Target cell.
When the ability parameter Capability_Ti_Sj of i-th of third cell meet formula Capability_Ti_Sj >=
When Th_4, determine that the third cell is Target cell.Wherein, Th_4 is the 4th threshold value.
Baseline scale value and average value are less than third by a kind of method of load balancing provided in an embodiment of the present invention
The cell of threshold value is determined as third cell, if there are a third cells in second community, it is determined that the third cell is target
Cell, if there are at least two third cells in second community, it is determined that ability parameter be greater than the 4th threshold value third cell be
Target cell.When switching to Target cell from source cell because of terminal in compared to the prior art, and make the load liter of Target cell
Height not can guarantee the communication quality of the terminal itself to influence the communication quality of each terminal in Target cell yet, the present invention
Third cell is screened by cell carrier polymerizing power and resource transmission ability, terminal carrier wave can be switched into and gathered
Conjunction ability is communicated with the stronger cell of resource transmission ability.It, will since the stronger cell communication quality of integration capability is better
Terminal switches to the strong cell of integration capability and is communicated, and also means that the communication quality that terminal can be improved.Therefore, it uses
Method can guarantee in the case where load balancing, further increase terminal and access the communication quality after Target cell.
In order to determine the stronger only one Target cell of integration capability, in an implementation of the embodiment of the present invention
In, Target cell can be the strongest cell of integration capability, later by target terminal switch to the strongest cell of integration capability into
Row communication.Therefore, on the basis of implementation as shown in Figure 3, it is also implemented as implementation as shown in Figure 4.Its
In, the third cell that step 109 determines that ability parameter is greater than the 4th threshold value is Target cell, can be implemented as step
1091, step 108 is being executed when there are the ability ginsengs for when at least two third cells, determining each third cell in second community
After number, step 110 can also be performed:
1091, when there are when four cell, determine that the 4th cell is Target cell in third cell.
Wherein, the 4th cell is the third cell that ability parameter is greater than the 4th threshold value.
110, when, there are when at least two four cells, determining at least two the 4th cells, ability is joined in third cell
The maximum cell of number is Target cell.
When in third cell there are when at least two four cells, can be descending according to ability parameter by the 4th cell
It is ranked up, and the ranking results of ability parameter is denoted as set A, i.e. A=A1 >=A2 >=... >=Ax }, x is just greater than 0
Integer.In embodiments of the present invention, it can choose in A the maximum cell of ability parameter as Target cell.
Ability parameter is greater than the third cell of the 4th threshold value by a kind of method of load balancing provided in an embodiment of the present invention
It is determined as the 4th cell, if there are the 4th cells in third cell, it is determined that the 4th cell is Target cell, if third
There are at least two the 4th cells in cell, it is determined that the maximum cell of ability parameter is Target cell.Compared to the prior art
It is middle when switching to Target cell from source cell because of terminal, and make the load rise of Target cell, to influence each in Target cell
The communication quality of a terminal, not can guarantee the communication quality of the terminal itself yet, and the present invention passes through integration capability is strongest small
Area is determined as Target cell, can determine the stronger only one Target cell of integration capability, comprehensive so as to switch terminal
The strongest cell of conjunction ability is communicated.Since the stronger cell communication quality of integration capability is better, terminal is switched into synthesis
The strongest cell of ability is communicated, and the communication quality of terminal can be improved.Therefore, can be guaranteed using method in load balancing
In the case where, it determines only one Target cell, can be improved communication quality to improve after terminal accesses the Target cell.
In order to improve communication quality of the terminal after completing cell switching, in a realization side of the embodiment of the present invention
In formula, secondary carrier can be configured for the terminal with carrier aggregation capacity.Therefore, on the basis of implementation as shown in Figure 1
On, it is also implemented as implementation as shown in Figure 5.Wherein, the determining baseline scale value of step 103 is being executed greater than the second threshold
The first community of value be Target cell after, step 111 can also be performed:
111, the corresponding secondary cell of Target cell is configured for Target cell.
If target terminal has the ability of carrier wave polymerization, base station can be according to the resources occupation rate active of Target cell
After receiving the request that terminal needs to add secondary carrier for the corresponding secondary cell of Target cell configuration Target cell or base station, it is
Target cell configures the corresponding secondary cell of Target cell.
It should be noted that in embodiments of the present invention, first threshold, second threshold, third threshold value, the 4th threshold value can be with
Be those skilled in the art rule of thumb or design requirement setting constant.
The method of a kind of load balancing provided in an embodiment of the present invention, after determining Target cell, for Target cell configuration pair
The secondary cell answered.When switching to Target cell from source cell because of terminal in compared to the prior art, and make the load of Target cell
It increases, to influence the communication quality of each terminal in Target cell, also not can guarantee the communication quality of the terminal itself, this hair
It is bright to increase terminal transmission bandwidth, improve the transmission rate of terminal data by configuring corresponding secondary cell for Target cell,
So as to effectively improve the communication quality after terminal access Target cell.Therefore, can be guaranteed using method equal in load
Communication quality in the case where weighing apparatus, after effectively improving terminal access Target cell.
The embodiment of the present invention provides a kind of device 20 of load balancing, as shown in fig. 6, the device 20 is for executing such as Fig. 1
To any one method of Fig. 5, which includes:
Determination unit 201, for determining first community, first community is that signal strength is greater than the in the adjacent cell of main plot
The cell of one threshold value, main plot are the cell in overload.
Determination unit 201 is also used to determine the benchmark of each first community when first community includes at least two cell
Ratio value, baseline scale value are used to indicate average signal Yu interference plus noise the ratio SINR of all terminals in cell.
Determination unit 201, the first community for being also used to determine that baseline scale value is greater than second threshold is Target cell.
Switch unit 202, the Target cell for determining the target terminal access determination unit 201 in main plot.
In an implementation of the embodiment of the present invention, determination unit 201 is specifically used for when there are one in first community
When a second community, determine that second community is Target cell, second community is the cell that benchmark ratio value is greater than second threshold.
Determination unit 201 is also used to when, there are when at least two second communities, determining the benchmark of main plot in first community
The baseline scale value of the secondary cell of ratio value and target terminal.
Determination unit 201 is also used to determine the benchmark of the baseline scale value of main plot and each secondary cell of target terminal
The average value of ratio value.
Determination unit 201, be also used to determine the first absolute value be less than third threshold value second community be Target cell, first
Absolute value is the absolute value of the baseline scale value of second community and the difference of average value.
In an implementation of the embodiment of the present invention, determination unit 201 is specifically used for when there are one in second community
When a third cell, determine that third cell is Target cell, third cell is the cell that the first absolute value is less than third threshold value.
Determination unit 201 is also used to when, there are when at least two third cells, determining each third cell in second community
Ability parameter, ability parameter is used to reflect the resource occupation of the quantity of secondary cell that third cell can polymerize, third cell
The resources occupation rate for the secondary cell that rate and third cell can polymerize.
Determination unit 201, the third cell for being also used to determine that ability parameter is greater than the 4th threshold value is Target cell.
In an implementation of the embodiment of the present invention, determination unit 201 is specifically used for when there are one in third cell
When a four cell, determine that the 4th cell is Target cell, the 4th cell is the cell that ability parameter is greater than the 4th threshold value.
Determination unit 201 is also used to when, there are when at least two four cells, determining at least two the 4th in third cell
In cell, the maximum cell of ability parameter is Target cell.
In an implementation of the embodiment of the present invention, device 20 further include:
Configuration unit 203, the Target cell for determining for determination unit 201 configure the corresponding secondary cell of Target cell.
A kind of device of load balancing provided in an embodiment of the present invention is big by signal strength in the cell in overload
It is determined as first community in the adjacent cell of first threshold, if first community includes at least two cells, by ends all in cell
The first community that the average SINR at end is greater than second threshold is determined as Target cell, later, by the target terminal in overloaded cells
It switches in Target cell and is communicated.Target cell is switched to from source cell because of terminal in compared to the prior art, and makes mesh
The load rise for marking cell, to influence the communication quality of each terminal in Target cell, while not can guarantee access target yet
The communication quality of the terminal itself after cell, the present invention is by the average SINR of all terminals in signal strength and cell to mistake
The adjacent cell for carrying cell is screened, using the preferable cell of communication quality as Target cell, so that terminal switches from source cell
When to Target cell, each terminal in Target cell will not because of Target cell load rise and influence communication quality.Together
When communicated since terminal has accessed the preferable cell of communication quality, also can guarantee the communication quality of terminal itself.Therefore, energy
Enough in the case where proof load equilibrium, the communication quality of terminal is improved.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for device reality
For applying example, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to embodiment of the method
Part explanation.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (English: Read-Only Memory, referred to as: ROM) or random access memory (English:
Random Access Memory, referred to as: RAM) etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (8)
1. a kind of method of load balancing, which is characterized in that the described method includes:
Determine that first community, the first community are the cell that signal strength is greater than first threshold in the adjacent cell of main plot, institute
Stating main plot is the cell in overload；
When the first community includes at least two cell, the baseline scale value of each first community, the benchmark ratio are determined
Example value is for indicating average signal Yu interference plus noise the ratio SINR of all terminals in cell；
The first community for determining that the baseline scale value is greater than second threshold is Target cell；
Target terminal in the main plot is accessed into the Target cell；
The first community that the determination baseline scale value is greater than second threshold is Target cell, comprising:
When in the first community there are when a second community, determining that the second community is the Target cell, described the
Two cells are the cell that the baseline scale value is greater than the second threshold；
After the baseline scale value of each first community of the determination, comprising:
When there are the baseline scale values for when at least two second communities, determining the main plot and described in the first community
The baseline scale value of the secondary cell of target terminal；
Determine the average value of the baseline scale value of the baseline scale value of the main plot and each secondary cell of the target terminal；
The second community for determining that the first absolute value is less than third threshold value is the Target cell, and first absolute value is second small
The absolute value of the difference of the baseline scale value and average value in area.
2. the method according to claim 1, wherein the first absolute value of the determination is less than the second of third threshold value
Cell is the Target cell, comprising:
When in the second community there are when a third cell, determining that the third cell is the Target cell, described the
Three cells are the cell that first absolute value is less than the third threshold value；
In the baseline scale value of each secondary cell of the baseline scale value and target terminal of the determination main plot
After average value, comprising:
When, there are when at least two third cells, determining the ability parameter of each third cell, the energy in the second community
Force parameter is for reflecting the quantity of secondary cell that third cell can polymerize, the resources occupation rate of third cell and described the
The resources occupation rate for the secondary cell that three cells can polymerize；
The third cell for determining that the ability parameter is greater than the 4th threshold value is the Target cell.
3. according to the method described in claim 2, it is characterized in that, the determination ability parameter is greater than the of the 4th threshold value
Three cells are the Target cell, comprising:
When in the third cell there are when four cell, determining that the 4th cell is the Target cell, described the
Four cells are the cell that the ability parameter is greater than the 4th threshold value；
After the ability parameter of each third cell of the determination, comprising:
When, there are when at least two four cells, determining at least two the 4th cell, ability is joined in the third cell
The maximum cell of number is the Target cell.
4. method according to any one of claims 1 to 3, which is characterized in that after determining the Target cell, packet
It includes:
The corresponding secondary cell of the Target cell is configured for the Target cell.
5. a kind of device of load balancing, which is characterized in that described device includes:
Determination unit, for determining that first community, the first community are that signal strength is greater than first in the adjacent cell of main plot
The cell of threshold value, the main plot are the cell in overload；
The determination unit is also used to determine the base of each first community when the first community includes at least two cell
Quasi- ratio value, the baseline scale value are used to indicate average signal Yu interference plus noise the ratio SINR of all terminals in cell；
The determination unit, the first community for being also used to determine that the baseline scale value is greater than second threshold is Target cell；
Switch unit, for the target terminal in the main plot to be accessed the Target cell that the determination unit determines；
The determination unit is specifically used for when, there are when a second community, determining the second community in the first community
For the Target cell, the second community is the cell that the baseline scale value is greater than the second threshold；
The determination unit is also used to when, there are when at least two second communities, determining the main plot in the first community
Baseline scale value and the target terminal secondary cell baseline scale value；
The determination unit is also used to determine the baseline scale value of the main plot and each secondary cell of the target terminal
The average value of baseline scale value；
The determination unit, the second community for being also used to determine that the first absolute value is less than third threshold value is the Target cell, institute
State the absolute value of the difference of baseline scale value and the average value that the first absolute value is second community.
6. device according to claim 5, which is characterized in that the determination unit is specifically used for working as the second community
It is middle there are when a third cell, determine the third cell be the Target cell, the third cell be described first absolutely
It is less than the cell of the third threshold value to value；
The determination unit is also used to when, there are when at least two third cells, determining that each third is small in the second community
The ability parameter in area, quantity, the money of third cell of the secondary cell that the ability parameter is used to reflect that third cell can polymerize
The resources occupation rate for the secondary cell that source occupancy and the third cell can polymerize；
The determination unit, the third cell for being also used to determine that the ability parameter is greater than the 4th threshold value is the Target cell.
7. device according to claim 6, which is characterized in that the determination unit is specifically used for working as the third cell
It is middle there are when four cell, determine the 4th cell be the Target cell, the 4th cell be the ability join
Number is greater than the cell of the 4th threshold value；
The determination unit is also used to when there are when at least two four cells, determining described at least two in the third cell
In a 4th cell, the maximum cell of ability parameter is the Target cell.
8. according to the device any in claim 5 to 7, which is characterized in that described device further include:
Configuration unit, it is corresponding auxiliary small that the Target cell for determining for the determination unit configures the Target cell
Area.
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| CN108632903A (en) * | 2017-03-20 | 2018-10-09 | 中国移动通信集团浙江有限公司 | Wireless network load-balancing method and device |
| CN111918336B (en) * | 2019-05-07 | 2023-04-28 | 中国移动通信集团湖北有限公司 | Method, device, base station and computer storage medium for determining split cell |
| CN113015204B (en) * | 2019-12-20 | 2024-03-22 | 中国移动通信集团陕西有限公司 | Network cell load balancing method and device |
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