CN102256367A - Scheduling method and device for reducing inter-cell interference - Google Patents
Scheduling method and device for reducing inter-cell interference Download PDFInfo
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- CN102256367A CN102256367A CN2010101844428A CN201010184442A CN102256367A CN 102256367 A CN102256367 A CN 102256367A CN 2010101844428 A CN2010101844428 A CN 2010101844428A CN 201010184442 A CN201010184442 A CN 201010184442A CN 102256367 A CN102256367 A CN 102256367A
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Abstract
The invention provides a scheduling method and a scheduling method device for reducing inter-cell interference. The method comprises the following steps of: analyzing overload indication transmitted by neighbor cells through a base station to obtain interference source user equipment and a corresponding interfered physical resource block thereof; setting a scheduling priority of the interference source user equipment to be higher than those of other user equipment; and selecting other physical resource blocks except the corresponding interfered physical resource block in the process of scheduling the interference source user equipment. By the method, the interference source user equipment causing interference can be timely scheduled, so that the interference source user equipment timely departs from the interfered physical resource block, and repeated interference is avoided.
Description
Technical field
The present invention relates to universal mobile telecommunications system (Universal Mobile TelecommunicationSystem, UMTS) Long Term Evolution (Long Term Evolution, LTE) field, the particularly dispatching method and the device of reduction presence of intercell interference in the LTE system.
Background technology
In order to improve the utilance of resource, adopt the scheduling of resource technology in the LTE system, (User Equipment UE) shares Radio Resource, and in simple terms, it is UE distribution Physical Resource Block (PRB) that scheduling UE refers to make a plurality of subscriber equipmenies a plurality of sub-districts in.
At present, according to the dispatching priority operation dispatching, the ordering of dispatching priority is determined by the calculating priority level factor in the LTE system, and priority factors comprises user throughput, packet time delay etc.
Interference between the sub-district is the intrinsic problem of cell mobile communication systems, and is no exception in the LTE system.(High Interference Indication is HII) with overload indication (Overload Indication, scheme OI) based on the high interference indication in LTE system employing at present.Base station (eNode B, E-UTRAN NodeB) PRB that uses HII may be disturbed to the neighbor cell circular, the PRB that uses OI to be disturbed to the neighbor cell circular, the eNode B of neighbor cell is by analyzing the interference source UE that OI just can determine to cause in the PRB that disturbed and this sub-district this interference.
The disturbing factor of minizone is not considered in the ordering of the dispatching priority in the LTE system at present, like this when having had interference source UE in this sub-district, if the dispatching priority of interference source UE is lower, then eNode B can not reschedule this interference source UE as early as possible, can not distribute other resources for interference source UE, make this interference source UE take the resource of having been disturbed for a long time, this will cause disturbing generation repeatedly.
Summary of the invention
The invention provides a kind of dispatching method that reduces presence of intercell interference, this method can in time be dispatched the UE that causes interference, avoids interference repeatedly to take place.
The invention provides a kind of dispatching device that reduces presence of intercell interference, this device can in time be dispatched the UE that causes interference, avoids interference repeatedly to take place.
Technical solution of the present invention is achieved in that
A kind of dispatching method that reduces presence of intercell interference, key are that this method comprises:
The interference source subscriber equipment of described overload indication circular and the disturbed Physical Resource Block of correspondence thereof are analyzed in the overload indication that A, base station reception of neighboring cell send;
B, the dispatching priority that described interference source subscriber equipment is set are higher than other subscriber equipmenies;
When C, base station dispatch described interference source subscriber equipment according to dispatching priority, select other Physical Resource Block except that the disturbed Physical Resource Block of its correspondence.
A kind of dispatching device that reduces presence of intercell interference, key are that this device comprises:
Analysis module, the interference source subscriber equipment of described overload indication circular and the disturbed Physical Resource Block of correspondence thereof are analyzed in the overload indication that reception of neighboring cell sends, and analysis result is sent to the dispatching priority order module;
The dispatching priority order module, according to the analysis result that analysis module provides, the dispatching priority that described interference source subscriber equipment is set is higher than other subscriber equipmenies;
Scheduler module when dispatching described interference source subscriber equipment according to dispatching priority, is selected other Physical Resource Block except that the disturbed Physical Resource Block of its correspondence.
As seen, the present invention reduces the dispatching method of presence of intercell interference, the OI that eNode B utilizes neighbor cell to send determines dispatching priority, for interference source UE is provided with high dispatching priority, and when scheduling interference source UE, select other PRB except that disturbed PRB, so just can in time dispatch the UE that causes interference, make interference source UE in time leave disturbed PRB, avoid interference repeatedly and take place.
Description of drawings
Fig. 1 reduces the flow chart of the dispatching method of presence of intercell interference for the present invention;
Fig. 2 is an area interference schematic diagram in the application example of method shown in Figure 1;
Fig. 3 reduces the structural representation of the dispatching device of presence of intercell interference for the present invention.
Embodiment
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Fig. 1 reduces the flow chart of the dispatching method of presence of intercell interference for the present invention, and this flow process comprises:
The OI that step 11:eNode B reception of neighboring cell sends analyzes interference source UE and disturbed PRB that OI circulates a notice of.
In this step, eNode B can preserve OI earlier after receiving the OI of neighbor cell transmission, is handling all after dates, the OI that analysis is preserved through one.Here the said processing cycle, refer to one section regular time window, when eNode B constantly received the OI that neighbor cell sends, the OI that can constantly receive in preservation, and all after date of processing at interval repeated above-mentioned analysis operation.
Step 12: the dispatching priority that described interference source UE is set is higher than other UE.
When step 13:eNode B dispatches described interference source UE according to dispatching priority, select other PRB except that the disturbed PRB of its correspondence.
As seen, the present invention reduces the dispatching method of presence of intercell interference, the OI that eNode B utilizes neighbor cell to send determines dispatching priority, for interference source UE is provided with high dispatching priority, and when scheduling interference source UE, select other PRB except that disturbed PRB, so just can in time dispatch the UE that causes interference, make interference source UE in time leave disturbed PRB, avoid interference repeatedly and take place.
If in the above-mentioned steps 11, analyzing and drawing interference source UE is more than two, leaves the disturbed PRB of its correspondence for further making interference source UE faster, may further include between the above-mentioned steps 12 and 13:
Step 121: the interference decentralization of analyzing each interference source UE correspondence.
Interference decentralization described in this step, refer to interference source UE and each PRB on the frequency band is caused the degree of scatter of interference, PRB0-PRB5 continuous distribution successively for example, when UE disturb be PRB0 and PRB4, another UE disturb be PRB2 and PRB3 the time, the former the interference decentralization of correspondence is wide, and the interference decentralization of latter's correspondence is narrow.
Step 122: the dispatching priority that disturbs the wide interference source UE of decentralization is set is higher than the narrow interference source UE of interference decentralization, the dispatching priority that disturbs between the identical interference source UE of decentralization is set arbitrarily.
The execution purpose of above-mentioned steps 121 and step 122 is, when interference source UE is two when above, sort once more according to the dispatching priority of the width that disturbs decentralization to interference source UE, the corresponding interference surface of disturbing the wide UE of decentralization to cause is wider, more need to be scheduled as early as possible, to avoid more the interference to repeat to take place, therefore disturb the wide interference source UE of decentralization should have higher dispatching priority.For disturbing the just in time identical interference source UE of decentralization,, dispatching priority can be set arbitrarily because the interference surface that causes is identical.
Enumerate an application example of the dispatching method that the present invention reduces presence of intercell interference below, Fig. 2 is should be with the interference schematic diagram of minizone in the example.
Should use in the example, the Serving cell of UE0 and UE1 is sub-district 3, and the neighbor cell of sub-district 3 is sub-district 0 and sub-district 1.ENode B in the sub-district 3 is according to the following steps operation dispatching.
Step 31: the eNode B of sub-district 1 receives the OI of sub-district 0 and sub-district 3 transmissions respectively, analyze OI circular UE0 that sub-district 0 sends to the PRB0 of sub-district 0 have interference, and UE1 the PRB4 of sub-district 0 is had interference, the OI circular UE0 that sub-district 1 sends to the PRB2 of sub-district 1 have interference, and UE1 the PRB4 of sub-district 1 is had interference.
Step 32: it is wideer than the interference decentralization of UE1 correspondence that the eNode of sub-district 1 analyzes the interference decentralization that draws the UE0 correspondence.
Step 33: the dispatching priority that the eNode of sub-district 1 is provided with UE0 is higher than UE1, and the dispatching priority of UE1 is higher than other non-interference source UE.
Step 34: when the eNode of sub-district 1 dispatches UE0, select other PRB except that PRB0 and PRB2; During scheduling UE1, select other PRB except that PRB4.
Fig. 3 reduces the structural representation of the dispatching device of presence of intercell interference for the present invention, and this device comprises: analysis module, dispatching priority order module and scheduler module.
Above-mentioned analysis module, the OI that reception of neighboring cell sends analyzes the interference source UE of described OI circular and the disturbed PRB of correspondence thereof, and analysis result is sent to the dispatching priority order module.
Above-mentioned dispatching priority order module, according to the analysis result that analysis module provides, the dispatching priority that interference source UE is set is higher than other UE.
Above-mentioned scheduler module when dispatching described interference source UE, is selected other PRB except that the disturbed PRB of its correspondence.
When interference source UE is more than two, with introduce in the full text method identical, can further consider the interference decentralization when dispatching priority sorts, in this case, above-mentioned analysis module comprises: receiving element, first is analyzed performance element, second and is analyzed performance element and transmitting element.
Above-mentioned receiving element, the OI that reception of neighboring cell sends sends to first with OI and analyzes performance element.Further, this receiving element can be preserved the OI that receives, and waits for that is handled all after dates, OI is sent to first analyze performance element.Identical with described in the preamble method of the processing cycle here.
Above-mentioned first analyzes performance element, analyzes the interference source UE and the corresponding disturbed PRB thereof of OI circular, analysis result is sent to second analyze performance element.
Above-mentioned second analyzes performance element, analyzes the interference decentralization of each interference source UE correspondence.
Above-mentioned transmitting element, the analysis result that first analytic unit and second analytic unit are drawn sends to the dispatching priority order module.
Further, above-mentioned dispatching priority order module comprises: the first ordering performance element and the second ordering performance element.
The above-mentioned first ordering performance element, according to the analysis result that transmitting element provides, the dispatching priority that interference source UE is set is higher than other UE.
The above-mentioned second ordering performance element according to the analysis result that transmitting element provides, is provided with the dispatching priority that disturbs the wide interference source UE of decentralization and is higher than the narrow interference source UE of interference decentralization.
Above-mentioned integral unit is integrated the ranking results that the first ordering performance element and the second ordering performance element draw, and offers scheduler module.
The dispatching device of reduction presence of intercell interference provided by the invention, according to the dispatching method executable operations of previously described reduction presence of intercell interference, concrete details and implementation effect repeat no more here.
The dispatching device of reduction presence of intercell interference provided by the invention is positioned at eNode B one side, can be integrated among the eNode B.
In sum, more than be preferred embodiment of the present invention only, be not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a dispatching method that reduces presence of intercell interference is characterized in that, this method comprises:
The interference source subscriber equipment of described overload indication circular and the disturbed Physical Resource Block of correspondence thereof are analyzed in the overload indication that A, base station reception of neighboring cell send;
B, the dispatching priority that described interference source subscriber equipment is set are higher than other subscriber equipmenies;
When C, base station dispatch described interference source subscriber equipment according to dispatching priority, select other Physical Resource Block except that the disturbed Physical Resource Block of its correspondence.
2. the method for claim 1 is characterized in that, described interference source subscriber equipment is more than two;
Further comprise between described step B and the step C:
Analyze the interference decentralization of each interference source subscriber equipment correspondence;
The dispatching priority that disturbs the wide interference source subscriber equipment of decentralization is set is higher than the narrow interference source subscriber equipment of interference decentralization; The dispatching priority that disturbs between the identical interference source subscriber equipment of decentralization is set arbitrarily.
3. the method for claim 1, it is characterized in that, in the described steps A, after the overload indication that the base station reception of neighboring cell sends, analyze before the interference source subscriber equipment and corresponding disturbed Physical Resource Block thereof of described overload indication circular, further comprise:
The overload indication that receives is preserved in the base station, and waits for a processing cycle.
4. a dispatching device that reduces presence of intercell interference is characterized in that, this device comprises:
Analysis module, the interference source subscriber equipment of described overload indication circular and the disturbed Physical Resource Block of correspondence thereof are analyzed in the overload indication that reception of neighboring cell sends, and analysis result is sent to the dispatching priority order module;
The dispatching priority order module, according to the analysis result that analysis module provides, the dispatching priority that described interference source subscriber equipment is set is higher than other subscriber equipmenies;
Scheduler module when dispatching described interference source subscriber equipment according to dispatching priority, is selected other Physical Resource Block except that the disturbed Physical Resource Block of its correspondence.
5. device as claimed in claim 4 is characterized in that, described analysis module comprises: receiving element, first is analyzed performance element, second and is analyzed performance element and transmitting element;
Described receiving element, the overload indication that reception of neighboring cell sends, the indication of will transshipping sends to first and analyzes performance element;
Described first analyzes performance element, analyzes the interference source subscriber equipment and the corresponding disturbed Physical Resource Block thereof of described overload indication circular, analysis result is sent to second analyze performance element;
Described second analyzes performance element, analyzes the interference decentralization of each interference source subscriber equipment correspondence;
Described transmitting element, the analysis result that first analytic unit and second analytic unit are drawn sends to the dispatching priority order module.
6. device as claimed in claim 5 is characterized in that, described dispatching priority order module comprises: the first ordering performance element, second ordering performance element and the integral unit;
The described first ordering performance element, according to the analysis result that described transmitting element provides, the dispatching priority that the interference source subscriber equipment is set is higher than other subscriber equipmenies;
The described second ordering performance element according to the analysis result that described transmitting element provides, is provided with the dispatching priority that disturbs the wide interference source subscriber equipment of decentralization and is higher than the narrow interference source subscriber equipment of interference decentralization; The dispatching priority that disturbs between the identical interference source subscriber equipment of decentralization is set arbitrarily;
Described integral unit is integrated the ranking results that the described first ordering performance element and the second ordering performance element draw, and offers described scheduler module.
7. device as claimed in claim 5 is characterized in that described receiving element is further used for, and preserves the overload indication that receives, and is waiting for that is handled all after dates, and the indication of will transshipping again sends to first and analyzes performance element.
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| CN2010101844428A CN102256367A (en) | 2010-05-20 | 2010-05-20 | Scheduling method and device for reducing inter-cell interference |
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| CN2010101844428A CN102256367A (en) | 2010-05-20 | 2010-05-20 | Scheduling method and device for reducing inter-cell interference |
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Cited By (6)
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| CN103517436A (en) * | 2012-06-25 | 2014-01-15 | 株式会社日立制作所 | Power control in LTE-advanced heterogeneous networks |
| WO2014032277A1 (en) * | 2012-08-31 | 2014-03-06 | 华为技术有限公司 | Scheduling method, base station and base station controller |
| CN106471855A (en) * | 2014-07-01 | 2017-03-01 | 瑞典爱立信有限公司 | Prediction scheduling of resource |
| CN107121602A (en) * | 2017-03-21 | 2017-09-01 | 广州小鹏汽车科技有限公司 | Vehicle-mounted central control system interference source finding method |
| CN103139917B (en) * | 2011-11-29 | 2017-12-12 | 中兴通讯股份有限公司 | Cause recognition methods, the apparatus and system of the user equipment of uplink interference |
| CN111083790A (en) * | 2018-10-19 | 2020-04-28 | 成都鼎桥通信技术有限公司 | Scheduling control method and device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103139917B (en) * | 2011-11-29 | 2017-12-12 | 中兴通讯股份有限公司 | Cause recognition methods, the apparatus and system of the user equipment of uplink interference |
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| CN106471855A (en) * | 2014-07-01 | 2017-03-01 | 瑞典爱立信有限公司 | Prediction scheduling of resource |
| CN106471855B (en) * | 2014-07-01 | 2020-03-17 | 瑞典爱立信有限公司 | Predictive resource scheduling |
| CN107121602A (en) * | 2017-03-21 | 2017-09-01 | 广州小鹏汽车科技有限公司 | Vehicle-mounted central control system interference source finding method |
| CN111083790A (en) * | 2018-10-19 | 2020-04-28 | 成都鼎桥通信技术有限公司 | Scheduling control method and device |
| CN111083790B (en) * | 2018-10-19 | 2022-09-09 | 成都鼎桥通信技术有限公司 | Scheduling control method and device |
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Application publication date: 20111123 |