CN102026207A - Inter-cell interference coordination method and device in heterogeneous network - Google Patents
Inter-cell interference coordination method and device in heterogeneous network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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Abstract
The invention provides an inter-cell interference coordination method and a device in a heterogeneous network. The method comprises the steps of configuring a limited interference source selection threshold and an interference contrast threshold according to parameter configuration of the limited interference source selection threshold and the interference contrast threshold, which are selected by a base station; measuring adjacent cell interference and reporting to the base station; and using the base station to contrast interference measured value with the interference contrast threshold, when the measured value is greater than the threshold, using the base station to determine interference coordinate strategy according to the contrast result between the measured values of the base stations and the user sides in different types in the heterogeneous network and the interference contrast threshold. By adopting the technical scheme, the inter-cell interference can be effectively reduced.
Description
Technical field
The present invention relates to the mobile communication technology field, more specifically, relate to disturbance coordination method and device in a kind of heterogeneous network.
Background technology
In follow-on broadband wireless communication network, how to solve in the cordless communication network and to support bigger bandwidth to become a key factor that improves inter-cell user terminal throughput and user terminal average throughput under the bandwidth in current wireless communication system and be faced with formidable challenges.
At present, long-term technology evolution (Long Term Evolution in third generation partner program, LTE) in, particularly in heterogeneous network, owing to exist dissimilar base station (BS) to have different self performance, such as transmitting power, throughput, peak rate, load states etc. all may be different, the difficulty of bringing for the distribution of Physical Cell Identifier, particularly when dissimilar base station numbers is big, can give conflict in the distribution of Physical Cell Identifier avoid bringing very big difficulty, simultaneously, because all there is overlay area separately the base station of reasonable ground type, bring stern challenge to Inter-Cell Interference Coordination.
Summary of the invention
The objective of the invention is to propose disturbance coordination method and device in a kind of heterogeneous network, to reduce presence of intercell interference.
For achieving the above object, the present invention proposes disturbance coordination method in a kind of heterogeneous network, selects threshold value and disturbs the parameter that is provided with of comparison threshold value limited interference source selection threshold value to be set and to disturb comparison threshold value according to base station selected limited interference source; Measure adjacent area interference and report the base station; Base station contrast interference measure with disturb comparison threshold value, when measured value during greater than threshold value, the base station is determined the interference coordination strategy according to the measured value of dissimilar base station in the heterogeneous network and user side with the comparing result that disturbs comparison threshold value.
Further, contrast interference measure in described base station is selected threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source.
Further, Physical Cell Identifier is selected according to limited interference source in described base station, and all base stations in maintenance and the limited interference source, the Physical Cell Identifier quadrature of user side.
Further, dissimilar base station in the described heterogeneous network and user side are redistributed resource according to new strategy change Physical Cell Identifier, adjust transmitting power.
Further, if described interference measure less than disturbing comparison threshold value, dissimilar base station in the heterogeneous network and user side are provided with new limited interference source and select threshold value, disturb comparison threshold value.
In addition, the present invention also proposes interference coordination device in a kind of heterogeneous network, and described device comprises unit, measuring unit, comparing unit and determining unit are set, wherein:
The described unit that is provided with is selected threshold value according to base station selected limited interference source and is disturbed the parameter that is provided with of comparison threshold value limited interference source selection threshold value to be set and to disturb comparison threshold value;
Described measuring unit is used to measure adjacent area interference and reports the base station;
Described comparing unit is used for base station contrast interference measure and disturbs comparison threshold value;
Described determining unit is used for when above-mentioned measured value during greater than threshold value, and the base station is determined the interference coordination strategy according to the measured value of dissimilar base station in the heterogeneous network and user side with the comparing result that disturbs comparison threshold value.
Further, described device also comprises selected cell, and described selected cell is used for described selected cell and is used for base station contrast interference measure and selects threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source.
Further, Physical Cell Identifier is selected according to limited interference source in described base station, and all base stations in maintenance and the limited interference source, the Physical Cell Identifier quadrature of user side.
Further, dissimilar base station in the described heterogeneous network and user side are redistributed resource according to new strategy change Physical Cell Identifier, adjust transmitting power.
Further, if described interference measure less than disturbing comparison threshold value, dissimilar base station in the heterogeneous network and user side are provided with new limited interference source and select threshold value, disturb comparison threshold value.
Beneficial effect of the present invention: compared with prior art, technical solution of the present invention is by the collision probability to Physical Cell Identifier in base stations dissimilar in the remarkable heterogeneous network that has reduced in Physical Cell Identifier distribution and the identification of being provided with of limited interference source and the user side detectable region, consider the characteristic of dissimilar base stations in the heterogeneous network in the coordinating district interference, determine different interference coordination strategies, effectively reduced presence of intercell interference.
Description of drawings
Fig. 1 is the schematic flow sheet of disturbance coordination method in the embodiment of the invention heterogeneous network;
Fig. 2 is the configuration diagram of interference coordination device in the embodiment of the invention heterogeneous network.
Embodiment
Technical solution of the present invention is at physical area disturbance coordination method and device based on limited interference source.In technical solution of the present invention, for the dissimilar base station in the heterogeneous network, such as Femto sub-district, Home eNodeB, microcellulor (Micro Cell) etc., user side is measured the disturbed condition of adjacent cell base station, for example, measure interference signal intensity, path loss etc., report the base station; The base station is provided with limited interference source according to user side and selects threshold value, and this threshold value can be according to measuring information setting such as interference signal intensity, path loss; Base station measurement of comparison value and threshold value are determined the dissimilar base station in the heterogeneous network, the limited interference source of user side; The dissimilar base station in the heterogeneous network, the Physical Cell Identifier of user side are determined according to limited interference source in the base station, and keep quadrature, that is, Physical Cell Identifier is conflict not; Dissimilar base station in the heterogeneous network such as transmitting power, throughput, peak rate, load state etc., is provided with the interference comparison threshold value according to self performance; The base station is determined the interference coordination strategy according to the measured value of the dissimilar base station in the heterogeneous network, user side with the comparing result that disturbs comparison threshold value; The interference coordination strategy of base station comprise change dissimilar base station in the heterogeneous network Physical Cell Identifier, redistribute different resources, adjust transmitting power, but be not limited thereto.The collision probability that Physical Cell Identifier in base stations dissimilar in the remarkable heterogeneous network that has reduced in Physical Cell Identifier distribution and the identification and the user side detectable region is set of limited interference source.Consider the characteristic of dissimilar base stations in the heterogeneous network in the coordinating district interference, determined different interference coordination strategies, effectively reduce presence of intercell interference.Limited interference source and Physical Cell Identifier can be static, semi-static, half dynamically, dynamic-configuration, with dissimilar base stations, user side performance requirement in the adapted to isomerous network.Dissimilar base station can be provided with different interference comparison threshold value or adopt a plurality of threshold values according to the performance of self in the heterogeneous network, to satisfy the demands.Physical Cell Identifier in the interference coordination, redistributing different resources, adjust strategies such as transmitting power and can use separately, also can be the use of uniting of several or whole strategies, plays to adjust to disturb to satisfy and disturbs the comparison threshold value requirement.Dissimilar base stations can be provided with different limited interference source and select threshold value in the heterogeneous network, or adopts a plurality of threshold values, to satisfy the demands.
Below in conjunction with the drawings and specific embodiments technical solution of the present invention is done detailed description.
Please refer to shown in Figure 1ly, is the schematic flow sheet of disturbance coordination method in the embodiment of the invention heterogeneous network, and it comprises the steps:
S101: base station selected limited interference source is selected threshold value, is disturbed the parameter that is provided with of comparison threshold value;
S102: the base station is provided with limited interference source according to the parameter of selecting and selects threshold value;
S103: the base station is provided with the interference comparison threshold value according to the parameter of selecting;
S104: base station and user sides dissimilar in the heterogeneous network are measured adjacent area interference, and reporting base station;
S105: contrast interference measure in base station is selected threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source;
S106: Physical Cell Identifier is selected according to limited interference source in the base station, and all base stations in maintenance and the limited interference source, the Physical Cell Identifier quadrature of user side;
S107: base station contrast interference measure with disturb comparison threshold value, when measured value during, forward step S108 to greater than threshold value, otherwise, forward step S110 to;
S108: the base station is determined the interference coordination strategy according to the measured value of dissimilar base station in the heterogeneous network and user side with the comparing result that disturbs comparison threshold value;
S109: dissimilar base station in the heterogeneous network and user side are redistributed resource according to new strategy change Physical Cell Identifier, adjust transmitting power;
S110: dissimilar base station in the heterogeneous network and user side are provided with new limited interference source and select threshold value, disturb comparison threshold value, and forward step S104 to and remeasure.
Please refer to shown in Figure 2ly, is the configuration diagram of interference coordination device in the embodiment of the invention heterogeneous network, and it comprises unit, measuring unit, comparing unit, selected cell and determining unit are set.
Described be provided with the unit be used for when base station selected limited interference source select threshold value, disturb comparison threshold value parameter is set after, the base station is provided with limited interference source according to the parameter of selecting and selects threshold value; Also be used for the base station and the interference comparison threshold value be set according to the parameter of selecting; And, be used among the step S110 of said method embodiment the dissimilar base station in the heterogeneous network and user side and new limited interference source is set selects threshold value, disturb comparison threshold value.
Described measuring unit is used for the dissimilar base station of heterogeneous network and user side is measured adjacent area interference.
Described comparing unit is used for base station contrast interference measure and selects threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source.
Described selected cell is used for base station contrast interference measure and selects threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source.
Described determining unit is used for the base station and determines the interference coordination strategy according to the dissimilar base station of heterogeneous network and the measured value of user side with the comparing result that disturbs comparison threshold value.
Technical solution of the present invention is by the collision probability to Physical Cell Identifier in base stations dissimilar in the remarkable heterogeneous network that has reduced in Physical Cell Identifier distribution and the identification of being provided with of limited interference source and the user side detectable region, consider the characteristic of dissimilar base stations in the heterogeneous network in the coordinating district interference, determine different interference coordination strategies, effectively reduced presence of intercell interference.
Certainly; the present invention also can have numerous embodiments; in the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making various corresponding changes or variation according to the present invention; in every case any modification of being done within the spirit and principles in the present invention, be equal to replacements, improvement, all should be included within protection scope of the present invention.
Claims (10)
1. disturbance coordination method in the heterogeneous network is characterized in that, selects threshold value and disturbs the parameter that is provided with of comparison threshold value limited interference source is set selects threshold value and disturb comparison threshold value according to base station selected limited interference source; Measure adjacent area interference and report the base station; Base station contrast interference measure with disturb comparison threshold value, when measured value during greater than threshold value, the base station is determined the interference coordination strategy according to the measured value of dissimilar base station in the heterogeneous network and user side with the comparing result that disturbs comparison threshold value.
2. the method for claim 1 is characterized in that, contrast interference measure in described base station is selected threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source.
3. method as claimed in claim 2 is characterized in that Physical Cell Identifier is selected according to limited interference source in described base station, and all base stations in maintenance and the limited interference source, the Physical Cell Identifier quadrature of user side.
4. the method for claim 1 is characterized in that, dissimilar base station in the described heterogeneous network and user side are redistributed resource according to new strategy change Physical Cell Identifier, adjust transmitting power.
5. the method for claim 1 is characterized in that, if described interference measure less than disturbing comparison threshold value, dissimilar base station in the heterogeneous network and user side are provided with new limited interference source and select threshold value, disturb comparison threshold value.
6. interference coordination device in the heterogeneous network is characterized in that, described device comprises unit, measuring unit, comparing unit and determining unit are set, wherein:
The described unit that is provided with is selected threshold value according to base station selected limited interference source and is disturbed the parameter that is provided with of comparison threshold value limited interference source selection threshold value to be set and to disturb comparison threshold value;
Described measuring unit is used to measure adjacent area interference and reports the base station;
Described comparing unit is used for base station contrast interference measure and disturbs comparison threshold value;
Described determining unit is used for when above-mentioned measured value during greater than threshold value, and the base station is determined the interference coordination strategy according to the measured value of dissimilar base station in the heterogeneous network and user side with the comparing result that disturbs comparison threshold value.
7. device as claimed in claim 6, it is characterized in that, described device also comprises selected cell, described selected cell is used for described selected cell and is used for base station contrast interference measure and selects threshold value with limited interference source, and selection greater than the dissimilar base stations of threshold value and user side as limited interference source.
8. device as claimed in claim 7 is characterized in that Physical Cell Identifier is selected according to limited interference source in described base station, and all base stations in maintenance and the limited interference source, the Physical Cell Identifier quadrature of user side.
9. device as claimed in claim 6 is characterized in that, dissimilar base station in the described heterogeneous network and user side are redistributed resource according to new strategy change Physical Cell Identifier, adjust transmitting power.
10. device as claimed in claim 6 is characterized in that, if described interference measure less than disturbing comparison threshold value, dissimilar base station in the heterogeneous network and user side are provided with new limited interference source and select threshold value, disturb comparison threshold value.
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| CN201010585262.0A CN102026207B (en) | 2010-12-13 | 2010-12-13 | Inter-cell interference coordination method and device in heterogeneous network |
| PCT/CN2011/074583 WO2012079337A1 (en) | 2010-12-13 | 2011-05-24 | Inter-cell interference coordination method and device in heterogeneous network |
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| CN201010585262.0A CN102026207B (en) | 2010-12-13 | 2010-12-13 | Inter-cell interference coordination method and device in heterogeneous network |
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| CN102316468A (en) * | 2011-08-19 | 2012-01-11 | 新邮通信设备有限公司 | Coexistence interference indicating method in long term evolution (LTE) trigger equipment and user equipment (UE) |
| WO2011144102A3 (en) * | 2011-05-27 | 2012-04-26 | 华为技术有限公司 | Method for cell interference coordination and base station |
| CN102438247A (en) * | 2011-11-03 | 2012-05-02 | 中兴通讯股份有限公司 | Physical cell identification allocating and obtaining method, base station and user equipment |
| WO2012079337A1 (en) * | 2010-12-13 | 2012-06-21 | 中兴通讯股份有限公司 | Inter-cell interference coordination method and device in heterogeneous network |
| CN102625336A (en) * | 2012-03-02 | 2012-08-01 | 中兴通讯股份有限公司 | Interference management method and device in heterogenous network |
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|---|---|
| CN102026207B (en) | 2014-09-10 |
| WO2012079337A1 (en) | 2012-06-21 |
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