CN102685776A - Method for reducing cell load through CoMP technology and cell - Google Patents
Method for reducing cell load through CoMP technology and cell Download PDFInfo
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- CN102685776A CN102685776A CN201110054652XA CN201110054652A CN102685776A CN 102685776 A CN102685776 A CN 102685776A CN 201110054652X A CN201110054652X A CN 201110054652XA CN 201110054652 A CN201110054652 A CN 201110054652A CN 102685776 A CN102685776 A CN 102685776A
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- cell
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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
- H04W28/086—Load balancing or load distribution among access entities
- H04W28/0861—Load balancing or load distribution among access entities between base stations
- H04W28/0864—Load balancing or load distribution among access entities between base stations of different hierarchy levels, e.g. Master Evolved Node B [MeNB] or Secondary Evolved node B [SeNB]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
Abstract
The invention discloses a method for reducing the cell load through a CoMP technology, which comprises the steps of: selecting user equipment UE when the cell load reaches to a predetermined value; changing a coordinated cell of the UE into a master cell when the cell is the master cell of a CoMP cell set of the UE; exiting the CoMP cell set of the UE when the cell is a coordinated cell of the CoMP cell set of the UE; and deleting the UE. According to the method for reducing the cell load through the CoMP technology and the cell provided by the invention, the UE is avoided the changing or abnormal releasing of the UE is avoided, simultaneously, the cell load is reduced effectively, the call drop rate of the UE and probability of switching can be reduced, and the key performance index of the system is improved.
Description
Technical field
The present invention relates to the communications field, specially refer to a kind of method and sub-district that reduces cell load through the CoMP technology.
Background technology
In the load management scene of existing GSM, use switching or call drop to reduce the load of sub-district usually.For Long Term Evolution (Long Term Evolution; LTE) system; When the load of sub-district reached the thresholding of setting, the balanced method with load control of applied load reduced cell load usually, i.e. a subscriber equipment (User Equipment of selected this sub-district; UE), make it to switch to Target cell; Professional call drop perhaps takes place.Guarantee the quality of service that the sub-district provides through this dual mode, but these two kinds of switchings all can influence the QoS that is switched UE or professional call drop UE takes place, and reduce user experience.
Summary of the invention
Main purpose of the present invention is that a kind of method and sub-district that reduces cell load through the CoMP technology is provided, and under the situation that does not influence the UE QoS, reduces cell load.
The present invention proposes a kind of method through CoMP technology reduction cell load, comprising:
When cell load reaches a preset value, select a user equipment (UE);
When said sub-district is the main plot of CoMP cell set of said UE, the cooperation cell of this UE is changed to the main plot;
When said sub-district is the cooperation cell of CoMP cell set of said UE, withdraw from the CoMP cell set of this UE;
Delete said UE.
Preferably, after carrying out said deletion UE, also comprise:
Whether the main plot of said UE increases cooperation cell according to the QoS decision of this UE.
Preferably, carrying out saidly when the sub-district is the main plot of CoMP cell set of UE, the cooperation cell of this UE changed to after the main plot, also comprising:
Main plot is after changing notified other cooperation cell of said UE.
Preferably, said when cell load reaches a preset value, select a user equipment (UE) to comprise:
Select a UE according to the priority of each UE in the sub-district, the throughput and the Traffic Channel quality of existing business.
Preferably, said when the sub-district is the main plot of CoMP cell set of UE, the cooperation cell of this UE is changed to the main plot comprise:
Obtain the load and the QoS information of each cooperation cell;
According to the load and the QoS information of each cooperation cell, select cooperation cell conduct main plot after changing, and withdraw from the CoMP cell set of this UE.
The present invention also proposes a kind of sub-district that reduces cell load through the CoMP technology, comprising:
Select the UE module, be used for when cell load reaches a preset value, selecting a user equipment (UE);
The change module is used for when said sub-district is the main plot of CoMP cell set of said UE, and the cooperation cell of this UE is changed to the main plot;
Withdraw from module, be used for when said sub-district is the cooperation cell of CoMP cell set of said UE, withdrawing from the CoMP cell set of this UE;
Removing module is used to delete said UE.
Preferably, said sub-district through CoMP technology reduction cell load also comprises:
Newly-increased module is used for whether increasing cooperation cell according to the QoS decision of said UE.
Preferably, said sub-district through CoMP technology reduction cell load also comprises:
Notification module is used for main plot is after changing notified other cooperation cell of said UE.
Preferably, said selection UE module also is used for:
Select a UE according to the priority of each UE in the sub-district, the throughput and the Traffic Channel quality of existing business.
Preferably, said change module comprises:
Acquiring unit is used to obtain the load and the QoS information of each cooperation cell;
Selected cell is used for load and QoS information according to each cooperation cell, selects cooperation cell conduct main plot after changing, and withdraws from the CoMP cell set of this UE.
A kind of method and sub-district that reduces cell load through the CoMP technology provided by the invention; Avoid UE switch or call drop in; Effectively reduce the load of sub-district; Reduce the cutting off rate of UE and the probability that switches, improved system Key Performance Indicator (Key Performance Index, KPI).
Description of drawings
Fig. 1 reduces the schematic flow sheet of method one embodiment of cell load through the CoMP technology for the present invention;
Fig. 2 reduces the schematic flow sheet of the another embodiment of method of cell load through the CoMP technology for the present invention;
Fig. 3 is the schematic flow sheet of the present invention through change process among method one embodiment of CoMP technology reduction cell load;
Fig. 4 reduces the schematic flow sheet of sub-district one embodiment of cell load through the CoMP technology for the present invention;
Fig. 5 reduces the schematic flow sheet of the another embodiment in sub-district of cell load through the CoMP technology for the present invention;
Fig. 6 is the schematic flow sheet of the present invention through change module among sub-district one embodiment of CoMP technology reduction cell load.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to Fig. 1, a kind of method one embodiment through CoMP technology reduction cell load of the present invention is proposed, comprising:
Step S10, when cell load reaches a preset value, select a user equipment (UE);
Think that when the load of sub-district surpasses a preset value this cell load transships, then the UE of a UE as load control selected in this sub-district from the UE instance of CoMP cell set, and purpose is to reduce UE number in the sub-district, reduces cell load at short notice rapidly.
Step S11, when said sub-district is the main plot of CoMP cell set of said UE, the cooperation cell of this UE is changed to the main plot;
After UE is selected; Whether the sub-district of judging traffic overload belongs to the main plot in the CoMP cell set of this UE; If then trigger main plot immigration load control flow: the main plot is at first to communicate by letter with each cooperation cell of UE in the sub-district of traffic overload; From each cooperation cell, select a cooperation cell, consult with this cooperation cell then, the main plot is migrated to this cooperation cell.
Step S12, when said sub-district is the cooperation cell of CoMP cell set of said UE, withdraw from the CoMP cell set of this UE;
If the sub-district of traffic overload is the cooperation cell of this UE; Then trigger cooperation cell immigration load control flow: cooperation cell is sent the traffic overload indication to the main plot; It is about to delete this UE the notice main plot; The content of message includes but not limited to following information: this cooperation cell ID, the ID of UE, UE QoS information etc.
Step S13, delete said UE.
When the sub-district of traffic overload is the main plot of CoMP cell set of UE, the cooperation cell of this UE changed to the main plot after, this UE of this sub-district deletion.Perhaps, when the sub-district of traffic overload is the cooperation cell of CoMP cell set of UE, withdraw from the CoMP cell set of this UE after, same local this UE of deletion.
In the present embodiment, the sub-district of traffic overload avoid UE to switch or call drop in, effectively reduce the load of sub-district, reduce the cutting off rate of UE and the probability that switches, improved the Key Performance Indicator of system.
With reference to Fig. 2, a kind of another embodiment of method through CoMP technology reduction cell load of the present invention is proposed, after execution in step S11, also comprise:
Step S14, other cooperation cell of inciting somebody to action main plot notice UE after changing.
The sub-district of traffic overload selects cooperation cell as after changing main plot from cooperation cell, consults with this cooperation cell, the main plot is migrated to this cooperation cell after, send the main plot Notification of Changes to other cooperation cell again.
After execution in step S13, also comprise:
Whether the main plot of step S15, said UE increases cooperation cell according to the QoS decision of this UE.
After main plot generation migration or cooperation cell withdraw from the CoMP cell set; Main plot in the CoMP cell set; According to factors such as the load of each cooperation cell in the current C oMP cell set, UE Traffic Channel quality, UE QoSs, whether decision need expand the CoMP cell set.Increase if need; Then in the adjacent area, search the sub-district except that cooperation cell and original main plot; Require UE to report the down channel quality situation of these sub-districts; And the load, resource operating position and the uplink signal-channel quality situation that require these sub-district feedbacks self, new cooperation cell is selected according to the QoS requirement of above-mentioned information and UE in the main plot.At last, the main plot is sent reallocation message and is given this UE, carries up-to-date CoMP collection cell information in the message, after UE receives, responds reprovision and accomplishes message, and carry out transfer of data with up-to-date CoMP collection sub-district.
In the present embodiment; After the sub-district of traffic overload reduces load through main plot migration or the mode that withdraws from the CoMP cell set; Main plot after changing notifies other cooperation cell above-mentioned change, and whether increases cooperation cell newly according to the QoS decision of UE, for follow-up load down is prepared.
In the above-described embodiments, step S10 can comprise:
Select a UE according to the priority of each UE in the sub-district, the throughput and the Traffic Channel quality of existing business.
When the load of sub-district surpassed a preset value, the UE of a UE as load control selected in this sub-district from the UE instance of CoMP cell set.Selection principle can be: take all factors into consideration the factors such as throughput and Traffic Channel quality of priority, the existing business of each UE, choose User Priority is lower, business throughput is big and Traffic Channel the is second-rate UE UE as load down.
In the present embodiment, the comprehensive condition through each UE in the sub-district is selected the UE of load control, and the method for other control UE that can be used to select to load also is applicable to the present invention.
With reference to Fig. 3, in the above-described embodiments, step S11 can comprise:
Step S111, the load that obtains each cooperation cell and QoS information;
When the sub-district of traffic overload during for the main plot of the CoMP cell set of selected UE, at first communicate by letter with each cooperation cell of UE in the sub-district of traffic overload, obtains the situation such as load, UE Traffic Channel quality of cooperation cell.
Step S112, according to the load and the QoS information of each cooperation cell, select a cooperation cell as after changing main plot, and withdraw from the CoMP cell set of this UE.
Lower, a UE Traffic Channel quality better cell of load is selected in the sub-district of traffic overload from cooperation cell.After this cooperation cell negotiation, the main plot is migrated to this cooperation cell.Also can select according to actual conditions.
With reference to Fig. 4, a kind of sub-district one embodiment through CoMP technology reduction cell load of the present invention is proposed, comprising:
Withdraw from module 30, be used for when said sub-district is the cooperation cell of CoMP cell set of said UE, withdrawing from the CoMP cell set of this UE;
Removing module 40 is used to delete said UE.
Think that when the load of sub-district surpasses a preset value this cell load transships, then select UE module 10 from the UE instance of CoMP cell set, to select the UE of a UE as load control, purpose is to reduce UE number in the sub-district, reduces cell load at short notice rapidly.
After UE is selected; Whether the sub-district of judging traffic overload belongs to the main plot in the CoMP cell set of this UE; If then trigger main plot immigration load control flow: change module 20 is at first communicated by letter with each cooperation cell of UE; From each cooperation cell, select a cooperation cell, consult with this cooperation cell then, the main plot is migrated to this cooperation cell.
If the sub-district of traffic overload is the cooperation cell of this UE; Then trigger cooperation cell immigration load control flow: withdraw from module 30 and send the traffic overload indication to the main plot; It is about to delete this UE the notice main plot; The content of message includes but not limited to following information: this cooperation cell ID, the ID of UE, UE QoS information etc.
When the sub-district of traffic overload is the main plot of CoMP cell set of UE, the cooperation cell of this UE changed to the main plot after, removing module 40 these UE of deletion.Perhaps, when the sub-district of traffic overload is the cooperation cell of CoMP cell set of UE, withdraw from the CoMP cell set of this UE after, same removing module 40 these UE of deletion.
In the present embodiment, the sub-district of traffic overload avoid UE to switch or call drop in, effectively reduce the load of sub-district, reduce the cutting off rate of UE and the probability that switches, improved the Key Performance Indicator of system.
With reference to Fig. 5, a kind of another embodiment in sub-district through CoMP technology reduction cell load of the present invention is proposed, in a last embodiment, also comprise:
Newly-increased module 60 is used for whether increasing cooperation cell according to the QoS decision of said UE.
The sub-district of traffic overload selects cooperation cell as after changing main plot from cooperation cell, consults with this cooperation cell, the main plot is migrated to this cooperation cell after, send the main plot Notification of Changes by notification module 50 to other cooperation cell again.
Migration or cooperation cell take place in the main plot withdraw from the CoMP cell set after, newly-increased module 60 is according to factors such as the load of each cooperation cell in the current C oMP cell set, UE Traffic Channel quality, UE QoSs, whether decision need expand the CoMP cell set.Increase if need; Then in the adjacent area, search the sub-district except that cooperation cell and original main plot; Require UE to report the down channel quality situation of these sub-districts; And the load, resource operating position and the uplink signal-channel quality situation that require these sub-district feedbacks self, newly-increased module 60 is selected new cooperation cell according to the QoS requirement of above-mentioned information and UE.At last, send reallocation message and give this UE, carry up-to-date CoMP collection cell information in the message, after UE receives, respond reprovision and accomplish message, and carry out transfer of data with up-to-date CoMP collection sub-district.
In the present embodiment; After the sub-district of traffic overload reduces load through main plot migration or the mode that withdraws from the CoMP cell set; Notification module 50 notifies other cooperation cell above-mentioned change; And whether newly-increased module 60 increases cooperation cell newly according to the QoS decision of UE, for follow-up load down is prepared.
In the above-described embodiments, select UE module 10 also to can be used for:
Select a UE according to the priority of each UE in the sub-district, the throughput and the Traffic Channel quality of existing business.
When the load of sub-district surpasses a preset value, select UE module 10 from the UE instance of CoMP cell set, to select the UE of a UE as load control.Selection principle can be: take all factors into consideration the factors such as throughput and Traffic Channel quality of priority, the existing business of each UE, choose User Priority is lower, business throughput is big and Traffic Channel the is second-rate UE UE as load down.
In the present embodiment, the comprehensive condition through each UE in the sub-district is selected the UE of load control, and the method for other control UE that can be used to select to load also is applicable to the present invention.
With reference to Fig. 6, in the above-described embodiments, change module 20 can comprise:
Acquiring unit 21 is used to obtain the load and the QoS information of each cooperation cell;
Selected cell 22 is used for load and QoS information according to each cooperation cell, selects cooperation cell conduct main plot after changing, and withdraws from the CoMP cell set of this UE.
When the sub-district of traffic overload during for the main plot of the CoMP cell set of selected UE, acquiring unit 21 is at first communicated by letter with each cooperation cell of UE, obtains the situation such as load, UE Traffic Channel quality of cooperation cell.Selected cell 22 is selected lower, a UE Traffic Channel quality better cell of load from cooperation cell.After this cooperation cell negotiation, the main plot is migrated to this cooperation cell, and withdraw from the CoMP cell set of this UE.Also can select according to actual conditions.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (10)
1. the method through CoMP technology reduction cell load is characterized in that, comprising:
When cell load reaches a preset value, select a user equipment (UE);
When said sub-district is the main plot of CoMP cell set of said UE, the cooperation cell of this UE is changed to the main plot;
When said sub-district is the cooperation cell of CoMP cell set of said UE, withdraw from the CoMP cell set of this UE;
Delete said UE.
2. the method through CoMP technology reduction cell load as claimed in claim 1 is characterized in that, after carrying out said deletion UE, also comprises:
Whether the main plot of said UE increases cooperation cell according to the QoS decision of this UE.
According to claim 1 or claim 2 pass through the method that CoMP technology reduces cell load, it is characterized in that, carrying out saidly when the sub-district is the main plot of CoMP cell set of UE, the cooperation cell of this UE is changed to after the main plot, also comprise:
Main plot is after changing notified other cooperation cell of said UE.
According to claim 1 or claim 2 pass through the method that CoMP technology reduces cell load, it is characterized in that, said when cell load reaches a preset value, select a user equipment (UE) to comprise:
Select a UE according to the priority of each UE in the sub-district, the throughput and the Traffic Channel quality of existing business.
According to claim 1 or claim 2 pass through the method that CoMP technology reduces cell load, it is characterized in that, said when the sub-district is the main plot of CoMP cell set of UE, the cooperation cell of this UE is changed to the main plot comprises:
Obtain the load and the QoS information of each cooperation cell;
According to the load and the QoS information of each cooperation cell, select cooperation cell conduct main plot after changing, and withdraw from the CoMP cell set of this UE.
6. a sub-district that reduces cell load through the CoMP technology is characterized in that, comprising:
Select the UE module, be used for when cell load reaches a preset value, selecting a user equipment (UE);
The change module is used for when said sub-district is the main plot of CoMP cell set of said UE, and the cooperation cell of this UE is changed to the main plot;
Withdraw from module, be used for when said sub-district is the cooperation cell of CoMP cell set of said UE, withdrawing from the CoMP cell set of this UE;
Removing module is used to delete said UE.
7. the sub-district that reduces cell load through the CoMP technology as claimed in claim 6 is characterized in that, also comprises:
Newly-increased module is used for whether increasing cooperation cell according to the QoS decision of said UE.
8. like claim 6 or the 7 described sub-districts that reduce cell load through the CoMP technology, it is characterized in that, also comprise:
Notification module is used for main plot is after changing notified other cooperation cell of said UE.
9. like claim 6 or the 7 described sub-districts that reduce cell load through the CoMP technology, it is characterized in that said selection UE module also is used for:
Select a UE according to the priority of each UE in the sub-district, the throughput and the Traffic Channel quality of existing business.
10. like claim 6 or the 7 described sub-districts that reduce cell load through the CoMP technology, it is characterized in that said change module comprises:
Acquiring unit is used to obtain the load and the QoS information of each cooperation cell;
Selected cell is used for load and QoS information according to each cooperation cell, selects cooperation cell conduct main plot after changing, and withdraws from the CoMP cell set of this UE.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN201110054652.XA CN102685776B (en) | 2011-03-08 | 2011-03-08 | The method and device that cell load is reduced by CoMP technology |
PCT/CN2011/082245 WO2012119461A2 (en) | 2011-03-08 | 2011-11-15 | Method for decreasing cell load by way of coordinated multiple point technology and evolved nodeb |
Applications Claiming Priority (1)
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CN201110054652.XA CN102685776B (en) | 2011-03-08 | 2011-03-08 | The method and device that cell load is reduced by CoMP technology |
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CN102685776A true CN102685776A (en) | 2012-09-19 |
CN102685776B CN102685776B (en) | 2017-03-15 |
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CN201110054652.XA Expired - Fee Related CN102685776B (en) | 2011-03-08 | 2011-03-08 | The method and device that cell load is reduced by CoMP technology |
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WO (1) | WO2012119461A2 (en) |
Cited By (1)
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CN102740360A (en) * | 2011-04-12 | 2012-10-17 | 中兴通讯股份有限公司 | Cell load control method and apparatus thereof |
Families Citing this family (1)
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CN106162884B (en) * | 2015-03-25 | 2019-07-26 | 电信科学技术研究院 | A kind of method for managing resource and equipment |
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Also Published As
Publication number | Publication date |
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WO2012119461A2 (en) | 2012-09-13 |
WO2012119461A3 (en) | 2012-11-01 |
CN102685776B (en) | 2017-03-15 |
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