CN106535259A - Cell load balancing method and cell load balancing device - Google Patents
Cell load balancing method and cell load balancing device Download PDFInfo
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- CN106535259A CN106535259A CN201510579366.3A CN201510579366A CN106535259A CN 106535259 A CN106535259 A CN 106535259A CN 201510579366 A CN201510579366 A CN 201510579366A CN 106535259 A CN106535259 A CN 106535259A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
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- 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
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a cell load balancing method and a cell load balancing device. The cell load balancing method comprises steps that GBR available capacity, PDCCH available capacity, and NonGBR available capacity of a current cell are acquired, and the minimum available capacity of the above mentioned three capacities is defined as the comprehensive available capacity of the current cell; a comprehensive available capacity of a cell adjacent to the current cell transmitted by the base of the cell adjacent to the current cell is acquired, and the cell load balancing is carried out according to the comprehensive capacity of the current cell and the comprehensive capacity of the cell adjacent to the current cell. By defining the minimum available capacity of the GBR available capacity, the PDCCH available capacity, and the NonGBR available capacity as the comprehensive available capacity of the current cell, the load balancing of the current cell is carried out. The to-be-switched terminal of the current cell is switched to a target cell, and the current cell can be unloaded without causing the overload phenomenon of the load of the target cell, and therefore the object of balancing the load between the cells is realized.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of cell load method and device in a balanced way.
Background technology
During existing mobile load balance (Mobility Load Balancing, MLB) is realized, when
When current cell load has exceeded the overload threshold value of actual set, current area and adjacent area exchange load letter
Breath, the Target cell for selecting low-load adjacent area to unload as load, by handoff parameter self-adaptative adjustment, will
UE (User Equipment, user terminal), with load-reason switching target small area, reaches current cell load
The purpose of reduction.
In conventional Mobile load balancing method, the base station belonging to current area can count the load of current area
Situation, when thresholding of the load more than setting, to the base affiliated respectively of all adjacent cells in adjacent cell list
Transmission resource status of standing are reported.Adjacent cell replys the loading condition of this cell, chooses suitable adjacent cell to working as
Front cell carries out loading unloading until the loading condition of current area stops less than high capacity thresholding.
It follows that current mobility load balance is to start under the high load condition of current area, waits and work as
Front cell load stops when being less than thresholding.This Mobile load balancing method can not be between balanced neighbor cell
Load, simply by load balancing by the load control of high capacity current area in the targeted loads thresholding for setting
Under.The unbalanced problem of inter-cell load that cannot in this way solve, may result in the money of idle district
Leave unused in source.
The content of the invention
The embodiment of the present invention provides a kind of cell load method and device in a balanced way, to solve because minizone is negative
Carry unbalanced, and cause the problem of the resources idle of idle district.
A kind of cell load provided in an embodiment of the present invention method in a balanced way, including：
Obtain active volume, the physical downlink control channel PDCCH of guarantee bit rate GBR of current area
Active volume and non-guaranteed bit rate NonGBR active volume；
By the active volume of GBR of the current area for obtaining, the active volume of PDCCH and NonGBR
Active volume in the minimum active volume of active volume value, the synthesis for being defined as the current area available holds
Amount；
The synthesis for obtaining the adjacent area of the current area that the base station belonging to the adjacent area of the current area sends can
Use capacity；
According to the available appearance of synthesis of the adjacent area of the comprehensive active volume and the current area of the current area
Amount, carries out cell load balanced.
It is preferred that the active volume of the GBR of the current area is determined by following step：
Obtain the GBR occupancy numbers of the current area, Physical Resource Block PRB and can use number；
Number is taken according to the GBR of the current area and the ratio of number can be used with PRB, determine described current little
The actual load of the GBR in area；
According to the actual load and the ratio of target load of the GBR of the current area, determine described current little
The relative load of the GBR in area；
The available appearance of the GBR of the current area is determined according to the relative load of the GBR of the current area
Amount.
It is preferred that the active volume of the PDCCH of the current area is determined by following step：
Obtaining the control channel unit CCE occupancy numbers of the current area, CCE can be with sum；
Number is taken according to the CCE of the current area and CCE can use the ratio of sum, determined described current little
The actual load of the PDCCH in area；
According to the actual load and the ratio of target load of the PDCCH of the current area, determine described current
The relative load of the PDCCH of cell；
Determined according to the relative load of the PDCCH of the current area current area PDCCH can
Use capacity.
It is preferred that the active volume of the NonGBR of the current area is determined by following step：
Obtain the NonGBR occupancy numbers of the current area, PRB and can use number；
Number is taken according to the NonGBR of the current area and the ratio of number can be used with PRB, determine described current
The actual load of the NonGBR of cell；
According to the ratio of the actual load and target load of the NonGBR of the current area, it is determined that described work as
The relative load of the NonGBR of front cell；
Determine the NonGBR's of the current area according to the relative load of the NonGBR of the current area
Active volume.
It is preferred that the current area that sends of the base station belonging to the adjacent area for obtaining the current area
The comprehensive active volume of adjacent area, including：
Load information interaction is set up with the base station belonging to the adjacent area to be connected；
Resource status report request is sent to the base station belonging to the adjacent area；
Receive the resource status report of the adjacent area that the base station belonging to the adjacent area sends, the money of the adjacent area
Source state report includes the comprehensive active volume of adjacent area.
It is preferred that after the base station to belonging to the adjacent area sends resource status report request, also wrapping
Include：
If the resource of the adjacent area that the base station belonging to the adjacent area sends is not received in setting time length
State report, then discharged the load information interaction set up with the base station belonging to the adjacent area and be connected.
It is preferred that the adjacent area of the comprehensive active volume and the current area according to the current area
Comprehensive active volume, carries out cell load equilibrium, including：
When the comprehensive active volume of the current area is less than the first capacity threshold, the current area is determined
Target Neighboring Cell List, the comprehensive active volume of the Target cell in the target Neighboring Cell List are more than or equal to second
The comprehensive active volume of capacity threshold and Target cell is big with the difference of the comprehensive active volume of the current area
In the 3rd capacity threshold；
Determine that the first object that the to be switched terminal in the current area and the to be switched terminal intend switching is little
Area；
The to be switched terminal is switched to into the first object cell.
It is preferred that described switch to the first object cell by the to be switched terminal, including：
If having multiple Target cells in the target Neighboring Cell List of the current area, can by the synthesis of Target cell
It is defined as the first object cell with the maximum Target cell of capacity；
The to be switched terminal is switched to into the first object cell of the determination.
It is preferred that little in the first object that the to be switched terminal in the current area is switched to the determination
After area, also include：
Determine whether to obtain the request of the refusal switching that the first object cell sends；
If so, the to be switched terminal of the current area is then switched to the target adjacent area row of the current area
The second Target cell in table, the comprehensive active volume of second Target cell is except the first object is little
Maximum Target cell outside area.
It is preferred that determining the to be switched terminal according to one of following conditions or combination in any：
The frequency range of terminal is consistent with the frequency range of Target cell；
Terminal is not set up the carrying of current Quality class letter QCI；
Terminal does not use dual carrier；
Terminal sets up GBR traffic, then the comprehensive active volume of the current area belonging to the terminal is included by institute
The GBR active volumes for stating current area determine；
Terminal supports A4 measurements.
Correspondingly, the embodiment of the present invention additionally provides a kind of cell load device in a balanced way, including：
First acquisition unit, for the active volume of guarantee bit rate GBR of current area, physical down
The active volume of the active volume and non-guaranteed bit rate NonGBR of control channel PDCCH；
Determining unit, the active volume of GBR of the current area for obtaining, PDCCH can
With the active volume that active volume value in the active volume of capacity and NonGBR is minimum, it is defined as described current
The comprehensive active volume of cell；
Second acquisition unit, it is described current for obtain that the base station belonging to the adjacent area of the current area sends
The comprehensive active volume of the adjacent area of cell；
Load Balance Unit, for the comprehensive active volume according to the current area and the current area
The comprehensive active volume of adjacent area, carries out cell load balanced.
It is preferred that the first acquisition unit specifically for：
The active volume of the GBR of the current area is determined according to following step：
Obtain the GBR occupancy numbers of the current area, Physical Resource Block PRB and can use number；
Number is taken according to the GBR of the current area and the ratio of number can be used with PRB, determine described current little
The actual load of the GBR in area；
According to the actual load and the ratio of target load of the GBR of the current area, determine described current little
The relative load of the GBR in area；
The available appearance of the GBR of the current area is determined according to the relative load of the GBR of the current area
Amount.
It is preferred that the first acquisition unit specifically for：
The active volume of the PDCCH of the current area is determined according to following step：
Obtaining the control channel unit CCE occupancy numbers of the current area, CCE can be with sum；
Number is taken according to the CCE of the current area and CCE can use the ratio of sum, determined described current little
The actual load of the PDCCH in area；
According to the actual load and the ratio of target load of the PDCCH of the current area, determine described current
The relative load of the PDCCH of cell；
Determined according to the relative load of the PDCCH of the current area current area PDCCH can
Use capacity.
It is preferred that the first acquisition unit specifically for：
The active volume of the NonGBR of the current area is determined according to following step：
Obtain the NonGBR occupancy numbers of the current area, PRB and can use number；
Number is taken according to the NonGBR of the current area and the ratio of number can be used with PRB, determine described current
The actual load of the NonGBR of cell；
According to the ratio of the actual load and target load of the NonGBR of the current area, it is determined that described work as
The relative load of the NonGBR of front cell；
Determine the NonGBR's of the current area according to the relative load of the NonGBR of the current area
Active volume.
It is preferred that the second acquisition unit specifically for：
Load information interaction is set up with the base station belonging to the adjacent area to be connected；
Resource status report request is sent to the base station belonging to the adjacent area；
Receive the resource status report of the adjacent area that the base station belonging to the adjacent area sends, the money of the adjacent area
Source state report includes the comprehensive active volume of adjacent area.
It is preferred that the second acquisition unit specifically for：
After the base station to belonging to the adjacent area sends resource status report request, if in setting time
The resource status report of the adjacent area that the base station belonging to the adjacent area sends is not received in length, is then discharged
The load information interaction set up with the base station belonging to the adjacent area is connected.
It is preferred that the Load Balance Unit specifically for：
When the comprehensive active volume of the current area is less than the first capacity threshold, the current area is determined
Target Neighboring Cell List, the comprehensive active volume of the Target cell in the target Neighboring Cell List are more than or equal to second
The comprehensive active volume of capacity threshold and Target cell is big with the difference of the comprehensive active volume of the current area
In the 3rd capacity threshold；
Determine that the first object that the to be switched terminal in the current area and the to be switched terminal intend switching is little
Area；
The to be switched terminal is switched to into the first object cell.
It is preferred that the Load Balance Unit specifically for：
If having multiple Target cells in the target Neighboring Cell List of the current area, can by the synthesis of Target cell
It is defined as the first object cell with the maximum Target cell of capacity；
The to be switched terminal is switched to into the first object cell of the determination.
It is preferred that the Load Balance Unit is additionally operable to：
Determine whether to obtain the request of the refusal switching that the first object cell sends；
If so, the to be switched terminal of the current area is then switched to the target adjacent area row of the current area
The second Target cell in table, the comprehensive active volume of second Target cell is except the first object is little
Maximum Target cell outside area.
It is preferred that the Load Balance Unit specifically for：
The to be switched terminal is determined according to one of following conditions or combination in any：
The frequency range of terminal is consistent with the frequency range of Target cell；
Terminal is not set up the carrying of current Quality class letter QCI；
Terminal does not use dual carrier；
Terminal sets up GBR traffic, then the comprehensive active volume of the current area belonging to the terminal is included by institute
The GBR active volumes for stating current area determine；
Terminal supports A4 measurements.
The embodiment of the present invention shows, the active volume of the GBR by obtaining current area, PDCCH can
With capacity and the active volume of NonGBR, by the active volume of the GBR of the current area for obtaining,
The minimum active volume of active volume value in the active volume of the active volume and NonGBR of PDCCH, it is determined that
For the comprehensive active volume of the current area, obtain what the base station belonging to the adjacent area of the current area sent
The comprehensive active volume of the adjacent area of the current area, according to comprehensive active volume and the institute of the current area
The comprehensive active volume of the adjacent area of current area is stated, cell load is carried out balanced.By the active volume of GBR,
One of the active volume of PDCCH, active volume of NonGBR or combination in any are determining current area
Comprehensive active volume, then according to the current area and its comprehensive active volume of adjacent area, enters to current area
To be switched terminal in current area is switched to Target cell by row load balancing, both can be to current area
Unloaded, the load of Target cell will not be caused again overload phenomenon occur, the load for realizing minizone is equal
The purpose of weighing apparatus.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in embodiment description
The accompanying drawing that needs are used is briefly introduced, it should be apparent that, drawings in the following description are only the present invention's
Some embodiments, for one of ordinary skill in the art, in the premise for not paying creative labor
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of system architecture schematic diagram in the embodiment of the present invention；
Fig. 2 is a kind of schematic flow sheet of cell load method in a balanced way in the embodiment of the present invention；
Fig. 3 is a kind of comprehensive active volume schematic diagram of current area in the embodiment of the present invention；
Fig. 4 is a kind of comprehensive active volume schematic diagram of adjacent area in the embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of the comprehensive active volume difference of adjacent area and current area in the embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of inter-cell load information exchange in the embodiment of the present invention；
Fig. 7 is a kind of schematic diagram of inter-cell load information exchange in the embodiment of the present invention；
Fig. 8 is a kind of schematic diagram of load balancing switching in the embodiment of the present invention；
Fig. 9 is a kind of structural representation of cell load device in a balanced way in the embodiment of the present invention.
Specific embodiment
In order that the purpose of the application, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this Shen
Please be described in further detail, it is clear that described embodiment is only the application some embodiments,
Rather than the embodiment of whole.Based on the embodiment in the application, those of ordinary skill in the art are not doing
The all other embodiment obtained under the premise of going out creative work, belongs to the scope of the application protection.
As shown in figure 1, a kind of the be suitable for networking communication system framework of the embodiment of the present invention, based on the system
Group-network construction is capable of achieving the load balancing of cell.The key component in communication system is listed in Fig. 1,
Including：It is base station (such as the base station 1～4 in Fig. 1), terminal, current area (cell 1 in figure) and current
The adjacent area (as cell 2～7 is the adjacent area of cell 1) of cell, base station 1 is the base station belonging to cell 1.
Terminal can be the electronic equipment with radio communication function such as mobile phone, panel computer, notebook computer.
Terminal can be communicated with base station 1 in the coverage of cell 1.Between base station 1 and other base stations
Can be communicated by X2 interface.
Based on foregoing description, a kind of cell load provided in an embodiment of the present invention side in a balanced way as shown in Figure 2
Method flow process, the flow process can by cell load in a balanced way device performing, the device is may be located in base station,
It can also be base station.
As shown in Fig. 2 the concrete steps of the flow process include：
Step 201, obtains the GBR's (Guaranteed Bit Rate, it is ensured that bit rate) of current area
Active volume, PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel)
The active volume of active volume, NonGBR (Non-Guaranteed Bit Rate, non-guaranteed bit rate).
Step 202, by the active volume of the GBR of the current area for obtaining, the active volume of PDCCH
Minimum active volume, is defined as the current area with active volume value in the active volume of NonGBR
Comprehensive active volume.
Step 203, obtains the adjacent area of the current area that the base station belonging to the adjacent area of the current area sends
Comprehensive active volume.
Step 204, according to the synthesis of the adjacent area of the comprehensive active volume and the current area of the current area
Active volume, carries out cell load balanced.
In embodiments of the present invention, comprehensive active volume is CAC, and the comprehensive active volume of current area is
CACS, the comprehensive active volume of adjacent area is CACT.The comprehensive active volume is used for the residual negative for representing cell
Capacity is carried, the comprehensive active volume is bigger, represent that the current load of cell is less, the comprehensive active volume is got over
It is little, represent that the current load of cell is bigger.In order to reduce overhead, up comprehensive active volume can be with
Think equal to descending comprehensive active volume.
In conventional Mobile load balancing method, current cell load is to PRB (Physical with UE
Resource Block, Physical Resource Block) utilization rate weighing, and the business of UE include GBR and
The business of NonGBR.Wherein, GBR traffic need to ensure certain service rate, and NonGBR business is not
Service rate need to be ensured.If NonGBR service rates can reach in the case of PRB resources abundance
The AMBR (Aggregated Maximum Bit Rate, Aggregate Maximum Bit Rate) of configuration, due to AMBR
The ratio of the general configuration of value is larger so that a small amount of NonGBR user may occupy most of PRB resources of cell,
Now think that the PRB utilization rates of cell are higher, the cell is high capacity cell, then trigger load balancing
Process.But actually NonGBR business be without the need for guaranteed rate, in cell still can with accessing user,
The cell load so weighed with the utilization rate of PRB can not reflect the actual access capability of cell, so as to meeting
Cause the waste of local resource.In above-described embodiment by introduce the active volume of GBR, PDCCH can
With capacity, the active volume of NonGBR, cell load can be preferably carried out balanced.
In step 201, the active volume of the GBR of current area can be determined according to following step：
Obtain the GBR occupancy numbers of current area, Physical Resource Block PRB and can use number, according to current area
GBR takes the ratio that number and PRB can use number, determine the actual load of the GBR of current area, according to working as
The actual load of the GBR of front cell and the ratio of target load, determine that the GBR of current area is born relatively
Lotus, determines the active volume of the GBR of current area according to the relative load of the GBR of current area.It is preferred that
Ground, can determine according to formula (3) according to the actual load of the GBR of formula (1) current area
The relative load of the GBR of current area, can according to formula (3) determine current area GBR it is available
Capacity.
Formula (1) is：
GBR LOAD=(A/B) * 100% ... ... ... ... ... ... ... (1)
Wherein, actual loads of the GBR LOAD for the GBR of current area, A are average for current area
GBR takes number, and B can use number for the consecutive mean PRB of current area.
Formula (2) is：
GBR relative load=min (GBR LOAD/Targetload, 100%) ... ... (2)
Wherein, actual loads of the GBR LOAD for the GBR of current area, Targetload is target load.
Carry out taking minima with the ratio of target load and 100% according to the actual load of GBR of current area, can
To obtain the relative load of the GBR of the current area.
Formula (3) is：
ACGBRThe relative load ... ... ... ... ... ... ... (3) of=100%-GBR
Wherein, ACGBRFor the active volume of the GBR of current area.
Correspondingly, the active volume of the PDCCH of current area can be determined according to following step：
CCE (Control Channel Element, control channel unit) the occupancy numbers of acquisition current area,
CCE can be taken number according to the CCE of current area and CCE can use the ratio of sum, it is determined that being worked as with sum
The actual load of the PDCCH of front cell, according to the actual load and target load of the PDCCH of current area
Ratio, determine the relative load of the PDCCH of current area, according to the relative of the PDCCH of current area
Load determines the active volume of the PDCCH of current area.Can be according to the PDCCH of formula (4) current area
Actual load, the relative load of the PDCCH of current area can be determined according to formula (5), can be with root
The active volume of the PDCCH of current area is determined according to formula (6).
Formula (4) is：
PDCCH LOAD=(C/D) * 100% ... ... ... ... ... ... ... (4)
Wherein, actual loads of the PDCCH LOAD for the PDCCH of current area, C are current area
Average CCE takes number, and D can be with sum for the CCE of current area.
Formula (5) is：
PDCCH relative load=min (PDCCH LOAD/Targetload, 100%) ... ... (5)
Wherein, actual loads of the PDCCH LOAD for the PDCCH of current area, Targetload is mesh
Mark load.Taken with 100% with the ratio of target load according to the actual load of PDCCH of current area
Minima, can obtain the relative load of the PDCCH of the current area.
Formula (6) is：
ACPDCCHThe relative load ... ... ... ... ... ... ... (6) of=100%-PDCCH
Wherein, ACGBRFor the active volume of the PDCCH of current area.
The active volume of the NonGBR of current area can be determined according to following step：
Obtain the NonGBR occupancy numbers of current area, PRB and can use number, according to the NonGBR of current area
Take number and the ratio of number can be used with PRB, determine the actual load of the NonGBR of current area, according to current
The actual load of the NonGBR of cell and the ratio of target load, determine the phase of the NonGBR of current area
To load, determined according to the relative load of the NonGBR of current area current area NonGBR it is available
Capacity.Can be according to the actual load of the NonGBR of formula (7) current area, can be according to formula (8)
Determine the relative load of the NonGBR of current area, current area can be determined according to formula (9)
The active volume of NonGBR.
Formula (7) is：
NonGBR LOAD=(E/F) * 100% ... ... ... ... ... ... ... (7)
Wherein, actual loads of the NonGBR LOAD for the NonGBR of current area, E is current area
NonGBR take number, F can use number for the dynamic N onGBR PRB of current area.
Formula (8) is：
NonGBR relative load=min (NonGBR LOAD/Targetload, 100%) ... (8)
Wherein, actual loads of the NonGBR LOAD for the NonGBR of current area, Targetload is mesh
Mark load.Taken with 100% with the ratio of target load according to the actual load of NonGBR of current area
Minima, can obtain the relative load of the NonGBR of the current area.
Formula (9) is：
ACNonGBRThe relative load ... ... ... ... ... ... (9) of=100%-NonGBR
Wherein, ACNonGBRFor the active volume of the NonGBR of current area.
Above-mentioned active volume is bigger, illustrates that the load of cell is relatively small, is adapted to terminal switching is entered.
In the embodiment of the present invention, the GBR of current area take number, PRB can with number, CCE take number,
It is all the dynamic average in a period of time that CCE can take number with sum and NonGBR.
In step 202., above-mentioned CACSDetermination mode can include one of in the following manner：
If obtaining the active volume of the physical downlink control channel PDCCH of current area, by current area
The active volume of PDCCH is defined as the comprehensive active volume of current area.
If obtaining the active volume and the active volume of PDCCH of the GBR of current area, by current area
The active volume of GBR and the active volume of PDCCH in the active volume of minimum be defined as current area
Comprehensive active volume.
If obtaining the active volume and the active volume of NonGBR of the GBR of current area, by current area
The active volume of GBR and the active volume of NonGBR in the active volume of minimum be defined as current area
Comprehensive active volume.
If obtaining the active volume and the active volume of NonGBR of the PDCCH of current area, will be current
The active volume of the minimum in the active volume of the active volume and NonGBR of the PDCCH of cell is defined as
The comprehensive active volume of current area.
If the active volume of GBR of acquisition current area, the active volume of PDCCH and NonGBR's can
With capacity, then by the active volume of the GBR of current area, the active volume of PDCCH and NonGBR
The active volume of the minimum in active volume is defined as the comprehensive active volume of current area.
Preferably, by the active volume of the GBR of the current area for obtaining, the active volume of PDCCH
Minimum active volume, is defined as the current area with active volume value in the active volume of NonGBR
Comprehensive active volume.The embodiment of the present invention can determine according to formula (10) that the synthesis of current area can use
Capacity.
Formula (10) is：
CACS=min (ACGBR, ACPDCCH, ACNonGBR)…………………………(10)
Wherein, CACSFor the comprehensive active volume of current area, ACGBRFor current area GBR can
With capacity, ACGBRFor the active volume of the PDCCH of current area, ACNonGBRFor current area
The active volume of NonGBR.
CACSValue it is bigger, represent current area load it is less, CACSValue it is less, represent current little
The load in area is larger.
Aforesaid way can be arbitrarily selected according to practical application, and the embodiment of the present invention is only example effect, to this
It is not limited.
In step 203, the comprehensive active volume of the adjacent area of the current area can be obtained in the following manner：
Firstly, it is necessary to set up load information interaction with the base station belonging to adjacent area be connected.By X2 interface with RSR
The mode of (Resource Status Request, resource status report) carries out load information interaction.Each adjacent area
Affiliated base station can count the comprehensive active volume of its adjacent area each under coverage, then be connect by X2
Mouth carries out load information interaction with other base stations.In this way, the base station belonging to current area can be obtained
Obtain the comprehensive active volume of each adjacent area of the current area.
Then, RSR requests are sent to the base station belonging to the adjacent area.The RSR is asked for belonging to adjacent area
Base station requests send its management adjacent area RSR, the base station belonging to adjacent area after RSR request is received,
The RSR of the adjacent area for itself counting is fed back.
Finally, the RSR of the adjacent area that the base station belonging to the adjacent area sends is received, in the RSR of the adjacent area
Including the comprehensive active volume of adjacent area.Such that it is able to obtain the comprehensive active volume of each adjacent area of current area.
Wherein, after the above-mentioned base station to belonging to adjacent area sends resource status report request, if in setting
Between the RSR of the adjacent area that the base station belonging to the adjacent area sends is not received in length, then discharge with it is described
The load information interaction connection that base station belonging to adjacent area is set up.Meanwhile, build with the base station belonging to the adjacent area again
Vertical load information interaction connection, sends RSR requests to the base station, again until receiving the base belonging to adjacent area
Stand send adjacent area RSR till.
Setting time length empirically can be arranged.In the setting time length, if belonging to adjacent area
The comprehensive active volume of the adjacent area of BTS management changes, then can periodically feed back the adjacent area of its management
Comprehensive active volume, current area own base station can periodically update the Neighboring Cell List of the current area
In each adjacent area comprehensive active volume.
Correspondingly, the comprehensive active volume of adjacent area is the adjacent area own base station according to the available of the GBR of the adjacent area
The minimum active volume of active volume value in the active volume of capacity, the active volume of PDCCH and NonGBR
It is determined that, specific determination process may refer to the determination process of the comprehensive active volume of current area, herein
Repeat no more.
In step 204, whether the Starting mode of load balancing is to judge the comprehensive active volume of current area
Less than the first capacity threshold, when the comprehensive active volume of current area is less than first threshold, can just start
Load balancing.First capacity threshold empirically can be configured in practical application.Such as Fig. 3 institutes
Show, the comprehensive active volume of the current area is less than MaxCACThresh, the MaxCACThresh is the
One capacity threshold, in Fig. 3, black cylinder represents the relative load of current area.Illustrate the current area needs
It is unloaded.
Determine that the comprehensive active volume of current area, less than after the first capacity threshold, needs in step 203
The target adjacent area row of the Target cell composition current area for meeting condition are chosen from the Neighboring Cell List of current area
Table.The condition can be that the comprehensive active volume of Target cell is more than or equal to the second capacity threshold and Target cell
The difference of comprehensive active volume and the comprehensive active volume of the current area be more than the 3rd capacity threshold.Its
In, the second capacity threshold and the 3rd capacity threshold empirically can be configured in practical application.Such as Fig. 4
With shown in Fig. 5, in Fig. 4, expression adjacent area synthesis active volume is more than CACHeadroom, the CACHeadroom
For the second capacity threshold, illustrate that there is the ability for receiving load the adjacent area.Fig. 5 represents that the synthesis of adjacent area is available to be held
Amount deducts the difference △ CAC of the comprehensive active volume of current area, and the △ CAC are more than DeltaCac, should
DeltaCac be the 3rd capacity threshold, CACT-CACS>DeltaCac, the synthesis that the minizone of setting allows bear
Capacity difference is carried, works as CACT-CACS≤ deltaCac explanation cell loads are balanced, it is no longer necessary to load balancing.
The Neighboring Cell List of current area is that the base station belonging to current area is sent according to all UE in current area
A4 measurement reports generate, it is preliminary generate Neighboring Cell List after, also need to enter traveling one to the Neighboring Cell List
The screening of step, needs to delete the cell for not meeting switching condition.Such as：It is unsatisfactory for RSRP (Reference Signal
Received Power, Reference Signal Received Power)/RSRQ (Reference Signal Received Quality,
Reference Signal Received Quality) setting level cell, the cell of different system, be put into load balancing switching
The cell of blacklist, no CAC information or CACT<The cell of the second capacity threshold, is unsatisfactory for CACT
-CACS>The cell of the 3rd capacity threshold, twice, between CAC reproducting periods, load balance is switched to this
Cell of the number of adjacent area more than the maximum switching times of setting.
For example, when the terminal in current area starts A4 to be measured, the base station belonging to current area will be
Receive in the time of 3s terminal transmission A4 measurement reports, if regulation time at least one measurement
Report is received by base station, then the Neighboring Cell List of current area will be generated.Then by further filtration,
The undesirable cells of RSRP/RSRQ can be removed.
The embodiment of the present invention can determine the to be switched terminal according to one of following conditions or combination in any：
The frequency range of terminal is consistent with the frequency range of Target cell, terminal is not set up QCI (Quality of service
Class Identifier, service quality rating mark) carrying, terminal using dual carrier, terminal set up
GBR traffic, then the comprehensive active volume of the Serving cell belonging to the terminal include by the Serving cell
GBR active volumes determine, terminal supports A4 measurements.Can also be the correlation function of terminal support, such as eventually
Support alien frequencies switching in end.Above-mentioned condition, can be with independent assortment in practical application, and the embodiment of the present invention is to this
It is not limited.
When the above-mentioned first object cell determined has multiple, then according to the comprehensive active volume of Target cell
Size be ranked up, the maximum Target cell of the comprehensive active volume of Target cell is defined as into described first
Target cell, then the to be switched terminal is switched to the first object cell of the determination.First mesh
The Target cell that cell is comprehensive active volume maximum is marked, the ability that can receive to be switched terminal is most strong.
During this, it is also possible to according to comprehensive active volume and the comprehensive active volume of current area of Target cell
The size of difference is ranked up.
After the first object cell that the to be switched terminal in the current area is switched to the determination,
The request for judging whether to obtain the refusal switching that first object cell sends is also needed to, if it is little to obtain first object
The request of the refusal switching that area sends, then switch to the to be switched terminal of the current area described current little
The second Target cell in the target Neighboring Cell List in area, second Target cell can for the synthesis of Target cell
With Target cell of the capacity sequence after the first object cell.Meanwhile, the first object cell is added
Enter load balancing switching blacklist, it is to avoid become Target cell when next load balancing switches.
Above-described embodiment shows, the active volume of the GBR by obtaining current area, PDCCH it is available
The active volume of capacity and NonGBR, by obtain the current area GBR active volume,
The minimum active volume of active volume value in the active volume of the active volume and NonGBR of PDCCH, it is determined that
For the comprehensive active volume of the current area, obtain what the base station belonging to the adjacent area of the current area sent
The comprehensive active volume of the adjacent area of the current area, according to comprehensive active volume and the institute of the current area
The comprehensive active volume of the adjacent area of current area is stated, cell load is carried out balanced.By the active volume of GBR,
One of the active volume of PDCCH, active volume of NonGBR or combination in any are determining current area
Comprehensive active volume, then according to the current area and its comprehensive active volume of adjacent area, enters to current area
To be switched terminal in current area is switched to Target cell by row load balancing, both can be to current area
Unloaded, the load of Target cell will not be caused again overload phenomenon occur, the load for realizing minizone is equal
The purpose of weighing apparatus.
Correspondingly, the embodiment of the present invention additionally provides a kind of method that inter-cell load information is exchanged, such as Fig. 6
It is shown, load information interaction is carried out with RSR with X2 interface between cell and cell.
As shown in fig. 6, set up current area connecting with the load information that exchanges of adjacent area, current area is to adjacent area
Resource status report request is sent, the resource status report request is provided with setting time length, in setting time
In length, current area can periodically receive the resource status report of adjacent area transmission.
Preferably, if as shown in fig. 7, in setting time length, current area does not receive adjacent area
Resource status are reported, then after setting time length terminates, by the load information interaction Connection Release with adjacent area.
If now also needing to the load information of adjacent area, said process can be re-executed, until receiving adjacent area
Till resource status are reported.
Preferably, the embodiment of the present invention additionally provides a kind of cell load changing method in a balanced way, such as Fig. 8 institutes
Show, current area sends handover request to first object cell, first object cell can carry out accessing switching control
System, if first object cell is not intended to access new terminal, can send refusal switching to current area
Ask, then current area sends handover request to the second Target cell, the second Target cell of request allows switching,
Till current area receives permission handover request.
Based on identical inventive concept, Fig. 9 shows that a kind of cell load provided in an embodiment of the present invention is balanced
Device structure, the device can perform cell load method flow in a balanced way, and the device may be located at base
In standing, it also can be base station.
As shown in figure 9, the device is specifically included：
First acquisition unit 901, for obtaining one or more current cell parameters, the current cell parameters
Including：Ensure the active volume of bit rate GBR, the active volume of physical downlink control channel PDCCH,
The active volume of non-guaranteed bit rate NonGBR；
Determining unit 902, for the minimum available appearance of active volume value in the current cell parameters that will obtain
Amount, is defined as the comprehensive active volume of the corresponding current area of the current cell parameters, and the synthesis can use
Capacity is used for the remaining load capacity for representing cell；
Second acquisition unit 903, for obtaining the comprehensive active volume of the adjacent area of the current area；
Load Balance Unit 904, for the comprehensive active volume according to the current area and the current area
Adjacent area comprehensive active volume, carry out load balancing.
Preferably, the first acquisition unit 901 specifically for：
The active volume of the GBR of the current area is determined according to following step：
Obtain the GBR occupancy numbers of the current area, Physical Resource Block PRB and can use number；
Number is taken according to the GBR of the current area and the ratio of number can be used with PRB, determine described current little
The actual load of the GBR in area；
According to the actual load and the ratio of target load of the GBR of the current area, determine described current little
The relative load of the GBR in area；
The available appearance of the GBR of the current area is determined according to the relative load of the GBR of the current area
Amount.
Preferably, the first acquisition unit 901 specifically for：
The active volume of the PDCCH of the current area is determined according to following step：
Obtaining the control channel unit CCE occupancy numbers of the current area, CCE can be with sum；
Number is taken according to the GBR of the current area and the ratio of number can be used with PRB, determine described current little
The actual load of the PDCCH in area；
According to the actual load and the ratio of target load of the PDCCH of the current area, determine described current
The relative load of the PDCCH of cell；
Determined according to the relative load of the PDCCH of the current area current area PDCCH can
Use capacity.
Preferably, the first acquisition unit 901 specifically for：
The active volume of the NonGBR of the current area is determined according to following step：
Obtain the NonGBR occupancy numbers of the current area, PRB and can use number；
Number is taken according to the NonGBR of the current area and the ratio of number can be used with PRB, determine described current
The actual load of the NonGBR of cell；
According to the ratio of the actual load and target load of the NonGBR of the current area, it is determined that described work as
The relative load of the NonGBR of front cell；
Determine the NonGBR's of the current area according to the relative load of the NonGBR of the current area
Active volume.
Preferably, the second acquisition unit 903 specifically for：
Load information interaction is set up with the base station belonging to the adjacent area to be connected；
Resource status report request is sent to the base station belonging to the adjacent area；
Receive the resource status report of the adjacent area that the base station belonging to the adjacent area sends, the money of the adjacent area
Source state report includes the comprehensive active volume of adjacent area.
Preferably, the second acquisition unit 903 specifically for：
After the base station to belonging to the adjacent area sends resource status report request, if in setting time
The resource status report of the adjacent area that the base station belonging to the adjacent area sends is not received in length, is then discharged
The load information interaction set up with the base station belonging to the adjacent area is connected.
Preferably, the Load Balance Unit 904 specifically for：
If having multiple Target cells in the target Neighboring Cell List of the current area, can by the synthesis of Target cell
It is defined as the first object cell with the maximum Target cell of capacity；
The to be switched terminal is switched to into the first object cell of the determination.
Preferably, the Load Balance Unit 904 is additionally operable to：
Determine whether to obtain the request of the refusal switching that the first object cell sends；
If so, the to be switched terminal of the current area is then switched to the target adjacent area row of the current area
The second Target cell in table, the comprehensive active volume of second Target cell is except the first object is little
Maximum Target cell outside area.
Preferably, the Load Balance Unit 904 specifically for：
The to be switched terminal is determined according to one of following conditions or combination in any：
The frequency range of terminal is consistent with the frequency range of Target cell；
Terminal is not set up the carrying of QCI；
Terminal does not use dual carrier；
Terminal sets up GBR traffic, then the comprehensive active volume of the current area belonging to the terminal is included by institute
The GBR active volumes for stating current area determine；
Terminal supports A4 measurements.
The application is with reference to according to the method for the embodiment of the present application, equipment (system), and computer program
Flow chart and/or block diagram describing.It should be understood that can by computer program instructions flowchart and/
Or each flow process and/or square frame and flow chart and/or the flow process in block diagram in block diagram and/or
The combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedded
The processor of datatron or other programmable data processing devices is producing a machine so that by computer
Or the instruction of the computing device of other programmable data processing devices is produced for realizing in one stream of flow chart
The device of the function of specifying in journey or one square frame of multiple flow processs and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in and can guide computer or other programmable data processing devices
In the computer-readable memory for working in a specific way so that be stored in the computer-readable memory
Instruction produces the manufacture for including command device, and the command device is realized in one flow process of flow chart or multiple streams
The function of specifying in one square frame of journey and/or block diagram or multiple square frames.
These computer program instructions can be also loaded in computer or other programmable data processing devices, made
Obtain and series of operation steps is performed on computer or other programmable devices to produce computer implemented place
Reason, so as to the instruction performed on computer or other programmable devices is provided for realizing in flow chart one
The step of function of specifying in flow process or one square frame of multiple flow processs and/or block diagram or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know base
This creative concept, then can make other change and modification to these embodiments.So, appended right will
Ask and be intended to be construed to include preferred embodiment and fall into the had altered of the application scope and change.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this Shen to the application
Spirit and scope please.So, if the application these modification and modification belong to the application claim and
Within the scope of its equivalent technologies, then the application is also intended to comprising these changes and modification.
Claims (20)
1. a kind of cell load method in a balanced way, it is characterised in that include：
Obtain active volume, the physical downlink control channel PDCCH of guarantee bit rate GBR of current area
Active volume and non-guaranteed bit rate NonGBR active volume；
By the active volume of GBR of the current area for obtaining, the active volume of PDCCH and NonGBR
Active volume in the minimum active volume of active volume value, the synthesis for being defined as the current area available holds
Amount；
The synthesis for obtaining the adjacent area of the current area that the base station belonging to the adjacent area of the current area sends can
Use capacity；
According to the available appearance of synthesis of the adjacent area of the comprehensive active volume and the current area of the current area
Amount, carries out cell load balanced.
2. the method for claim 1, it is characterised in that the GBR's of the current area is available
Capacity is determined by following step：
Obtain the GBR occupancy numbers of the current area, Physical Resource Block PRB and can use number；
Number is taken according to the GBR of the current area and the ratio of number can be used with PRB, determine described current little
The actual load of the GBR in area；
According to the actual load and the ratio of target load of the GBR of the current area, determine described current little
The relative load of the GBR in area；
The available appearance of the GBR of the current area is determined according to the relative load of the GBR of the current area
Amount.
3. the method for claim 1, it is characterised in that the PDCCH's of the current area can
Determined by following step with capacity：
Obtaining the control channel unit CCE occupancy numbers of the current area, CCE can be with sum；
Number is taken according to the CCE of the current area and CCE can use the ratio of sum, determined described current little
The actual load of the PDCCH in area；
According to the actual load and the ratio of target load of the PDCCH of the current area, determine described current
The relative load of the PDCCH of cell；
Determined according to the relative load of the PDCCH of the current area current area PDCCH can
Use capacity.
4. the method for claim 1, it is characterised in that the NonGBR's of the current area can
Determined by following step with capacity：
Obtain the NonGBR occupancy numbers of the current area, PRB and can use number；
Number is taken according to the NonGBR of the current area and the ratio of number can be used with PRB, determine described current
The actual load of the NonGBR of cell；
According to the ratio of the actual load and target load of the NonGBR of the current area, it is determined that described work as
The relative load of the NonGBR of front cell；
Determine the NonGBR's of the current area according to the relative load of the NonGBR of the current area
Active volume.
5. the method for claim 1, it is characterised in that the adjacent area of the acquisition current area
The comprehensive active volume of the adjacent area of the current area that affiliated base station sends, including：
Load information interaction is set up with the base station belonging to the adjacent area to be connected；
Resource status report request is sent to the base station belonging to the adjacent area；
Receive the resource status report of the adjacent area that the base station belonging to the adjacent area sends, the money of the adjacent area
Source state report includes the comprehensive active volume of adjacent area.
6. method as claimed in claim 5, it is characterised in that in the base station to belonging to the adjacent area
After sending resource status report request, also include：
If the resource of the adjacent area that the base station belonging to the adjacent area sends is not received in setting time length
State report, then discharged the load information interaction set up with the base station belonging to the adjacent area and be connected.
7. the method for claim 1, it is characterised in that the synthesis according to the current area
The comprehensive active volume of the adjacent area of active volume and the current area, carries out cell load equilibrium, including：
When the comprehensive active volume of the current area is less than the first capacity threshold, the current area is determined
Target Neighboring Cell List, the comprehensive active volume of the Target cell in the target Neighboring Cell List are more than or equal to second
The comprehensive active volume of capacity threshold and Target cell is big with the difference of the comprehensive active volume of the current area
In the 3rd capacity threshold；
Determine that the first object that the to be switched terminal in the current area and the to be switched terminal intend switching is little
Area；
The to be switched terminal is switched to into the first object cell.
8. method as claimed in claim 7, it is characterised in that described that the to be switched terminal is switched to
The first object cell, including：
If having multiple Target cells in the target Neighboring Cell List of the current area, can by the synthesis of Target cell
It is defined as the first object cell with the maximum Target cell of capacity；
The to be switched terminal is switched to into the first object cell of the determination.
9. method as claimed in claim 8, it is characterised in that will be to be switched in the current area
After terminal switches to the first object cell of the determination, also include：
Determine whether to obtain the request of the refusal switching that the first object cell sends；
If so, the to be switched terminal of the current area is then switched to the target adjacent area row of the current area
The second Target cell in table, the comprehensive active volume of second Target cell is except the first object is little
Maximum Target cell outside area.
10. the method as described in any one of claim 7 to 9, it is characterised in that according to following conditions it
One or combination in any determine the to be switched terminal：
The frequency range of terminal is consistent with the frequency range of Target cell；
Terminal is not set up the carrying that service quality rating identifies QCI；
Terminal does not use dual carrier；
Terminal sets up GBR traffic, then the comprehensive active volume of the Serving cell belonging to the terminal is included by institute
The GBR active volumes for stating Serving cell determine；
Terminal supports A4 measurements.
11. a kind of cell loads device in a balanced way, it is characterised in that include：
First acquisition unit, for the active volume of guarantee bit rate GBR of current area, physical down
The active volume of the active volume and non-guaranteed bit rate NonGBR of control channel PDCCH；
Determining unit, the active volume of GBR of the current area for obtaining, PDCCH can
With the active volume that active volume value in the active volume of capacity and NonGBR is minimum, it is defined as described current
The comprehensive active volume of cell；
Second acquisition unit, it is described current for obtain that the base station belonging to the adjacent area of the current area sends
The comprehensive active volume of the adjacent area of cell；
Load Balance Unit, for the comprehensive active volume according to the current area and the current area
The comprehensive active volume of adjacent area, carries out cell load balanced.
12. devices as claimed in claim 11, it is characterised in that the first acquisition unit specifically for：
The active volume of the GBR of the current area is determined according to following step：
Obtain the GBR occupancy numbers of the current area, Physical Resource Block PRB and can use number；
Number is taken according to the GBR of the current area and the ratio of number can be used with PRB, determine described current little
The actual load of the GBR in area；
According to the actual load and the ratio of target load of the GBR of the current area, determine described current little
The relative load of the GBR in area；
The available appearance of the GBR of the current area is determined according to the relative load of the GBR of the current area
Amount.
13. devices as claimed in claim 11, it is characterised in that the first acquisition unit specifically for：
The active volume of the PDCCH of the current area is determined according to following step：
Obtaining the control channel unit CCE occupancy numbers of the current area, CCE can be with sum；
Number is taken according to the CCE of the current area and CCE can use the ratio of sum, determined described current little
The actual load of the PDCCH in area；
According to the actual load and the ratio of target load of the PDCCH of the current area, determine described current
The relative load of the PDCCH of cell；
Determined according to the relative load of the PDCCH of the current area current area PDCCH can
Use capacity.
14. devices as claimed in claim 11, it is characterised in that the first acquisition unit specifically for：
The active volume of the NonGBR of the current area is determined according to following step：
Obtain the NonGBR occupancy numbers of the current area, PRB and can use number；
Number is taken according to the NonGBR of the current area and the ratio of number can be used with PRB, determine described current
The actual load of the NonGBR of cell；
According to the ratio of the actual load and target load of the NonGBR of the current area, it is determined that described work as
The relative load of the NonGBR of front cell；
Determine the NonGBR's of the current area according to the relative load of the NonGBR of the current area
Active volume.
15. devices as claimed in claim 11, it is characterised in that the second acquisition unit specifically for：
Load information interaction is set up with the base station belonging to the adjacent area to be connected；
Resource status report request is sent to the base station belonging to the adjacent area；
Receive the resource status report of the adjacent area that the base station belonging to the adjacent area sends, the money of the adjacent area
Source state report includes the comprehensive active volume of adjacent area.
16. devices as claimed in claim 15, it is characterised in that the second acquisition unit specifically for：
After the base station to belonging to the adjacent area sends resource status report request, if in setting time
The resource status report of the adjacent area that the base station belonging to the adjacent area sends is not received in length, is then discharged
The load information interaction set up with the base station belonging to the adjacent area is connected.
17. devices as claimed in claim 11, it is characterised in that the Load Balance Unit specifically for：
When the comprehensive active volume of the current area is less than the first capacity threshold, the current area is determined
Target Neighboring Cell List, the comprehensive active volume of the Target cell in the target Neighboring Cell List are more than or equal to second
The comprehensive active volume of capacity threshold and Target cell is big with the difference of the comprehensive active volume of the current area
In the 3rd capacity threshold；
Determine that the first object that the to be switched terminal in the current area and the to be switched terminal intend switching is little
Area；
The to be switched terminal is switched to into the first object cell.
18. devices as claimed in claim 17, it is characterised in that the Load Balance Unit specifically for：
If having multiple Target cells in the target Neighboring Cell List of the current area, can by the synthesis of Target cell
It is defined as the first object cell with the maximum Target cell of capacity；
The to be switched terminal is switched to into the first object cell of the determination.
19. devices as claimed in claim 18, it is characterised in that the Load Balance Unit specifically for：
Determine whether to obtain the request of the refusal switching that the first object cell sends；
If so, the to be switched terminal of the current area is then switched to the target adjacent area row of the current area
The second Target cell in table, the comprehensive active volume of second Target cell is except the first object is little
Maximum Target cell outside area.
20. devices as described in any one of claim 17 to 19, it is characterised in that the load balancing
Unit specifically for：
The to be switched terminal is determined according to one of following conditions or combination in any：
The frequency range of terminal is consistent with the frequency range of Target cell；
Terminal is not set up the carrying that service quality rating identifies QCI；
Terminal does not use dual carrier；
Terminal sets up GBR traffic, then the comprehensive active volume of the Serving cell belonging to the terminal is included by institute
The GBR active volumes for stating Serving cell determine；
Terminal supports A4 measurements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510579366.3A CN106535259A (en) | 2015-09-11 | 2015-09-11 | Cell load balancing method and cell load balancing device |
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| CN201510579366.3A CN106535259A (en) | 2015-09-11 | 2015-09-11 | Cell load balancing method and cell load balancing device |
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| CN111343702A (en) * | 2020-02-18 | 2020-06-26 | 中国电信股份有限公司 | 5G system energy-saving control method and system and computer readable storage medium |
| CN112333107A (en) * | 2020-11-12 | 2021-02-05 | 中国联合网络通信集团有限公司 | Method, device and storage medium for determining strategy for sending downlink data |
| CN114615708A (en) * | 2022-05-11 | 2022-06-10 | 广州世炬网络科技有限公司 | Method and device for accessing terminal to user plane of centralized unit in balanced manner |
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