CN104469815B - A method and user equipment for triggering network-assisted interference cancellation and suppression - Google Patents
A method and user equipment for triggering network-assisted interference cancellation and suppression Download PDFInfo
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- CN104469815B CN104469815B CN201310419585.6A CN201310419585A CN104469815B CN 104469815 B CN104469815 B CN 104469815B CN 201310419585 A CN201310419585 A CN 201310419585A CN 104469815 B CN104469815 B CN 104469815B
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- neighboring community
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
- H04J11/0056—Inter-base station aspects
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本发明涉及一种用户设备触发网络辅助干扰消除和抑制的方法，包括:检测相邻小区产生的干扰;根据所述检测的结果对所述造成干扰的相邻小区进行筛选;以及向所述用户设备所处的本小区的基站报告经过筛选的造成干扰的所述相邻小区的信息，用于供所述本小区基站对消除和抑制干扰的辅助信息的内容以及接收所述辅助信息的对象进行确定。本发明还涉及执行上述方法的用户设备。
The present invention relates to a method for user equipment to trigger network-assisted interference cancellation and suppression, comprising: detecting interference generated by adjacent cells; screening the adjacent cells causing interference according to the detection results; The base station of the cell where the device is located reports the filtered information of the adjacent cells that cause interference, which is used by the base station of this cell for the content of the auxiliary information for eliminating and suppressing interference and the object receiving the auxiliary information. Sure. The present invention also relates to user equipment performing the above method.
Description
Technical field
The invention mainly relates to the communication technologys, in particular to for triggering network assistance interference elimination and inhibiting
The method of (Network Assisted Interference Cancellation and Suppression, abbreviation NAICS)
And user equipment (UE).
Background technique
The requirement of data application is supported to drive research and development with high handling capacity and spectrum efficiency mobile network at present
Based on orthogonal frequency division multiplexer (Orthogonal Frequency Division Multiplexing, referred to as
OFDM 4G network) includes the demand of WiMAX, 3GPPLTE and LTE-A.LTE and LTE-A is interference limiting system, is located at tool
In the region for having intensive cell.Therefore, the important research project of LTE and lte-a system is Inter-Cell Interference Coordination.?
In the discussion of Release-8/9, the Inter-Cell Interference Coordination (inter- between the macrocell based on RNTP/HII/OI is proposed
Cell interference coordination, abbreviation ICIC).In the discussion of Release-10, CoMP and almost blank
Subframe is proposed for the interference coordination between macrocell and Microcell.In Release-11, the CRS's with network assistance
FeICIC AF panel and elimination are proposed for further performance improvement.
In order to deal with the data service with exponential increase, intensive cell arrangements and improved cell spectrum effect are needed
Rate.Cochannel interference (co-channel interference) (is either caused still by inter-cell interference by dispatching jointly
User in cell causes) it is all main limiting factor for obtaining better network capabilities.With the coordination phase of transmission equipment side
Than being also capable of providing significant performance gain in the AF panel of receiving side or elimination.Therefore, for the NAICS of LTE by
It is confirmed as the research project of Release-12.
Summary of the invention
The FeICIC AF panel and elimination mechanism of CRS in Release-11 with network assistance is mainly by network
Side triggering, and carrying out only relating to a small amount of network information during interference elimination.However, NAIC progress is to be directed to
The interference of physical down link sharing channel (physical downlink shared channel, abbreviation PDSCH) is eliminated, because
This can be related to a large amount of network information.In this case, each for eliminating if eliminating trigger mechanism using existing interference
The auxiliary information of neighboring community indiscriminate can issue all UE, it is desirable to which there is each UE a large amount of memory space to be used for
These a large amount of network informations are stored, also there is complicated computing capability to be used to carry out iterative calculation repeatedly.In addition, to every
It is not to require to carry out interference cancellation operation at any time for a UE, only just needs to be disappeared when interference reaches certain level
It removes.Accordingly, it is desirable to provide a kind of processing capacity without significantly changing UE, and for each UE more targetedly
NAICS trigger mechanism.
In order to overcome the above problem, one embodiment of the application provides a kind of user equipment triggering network assistance interference
The method eliminated and inhibited, comprising: the interference that detection neighboring community generates;It is interfered according to the result of the detection to described
Neighboring community screened;And the interfering by screening to the base station report of this cell locating for the user equipment
The neighboring community information, for for described cell base station to eliminate and inhibit interference auxiliary information content and
The object for receiving the auxiliary information is determined.
Particularly, the interference that the detection neighboring community generates include to the reference signal of described cell with it is described adjacent
The ratio between both the power of the reference signal of cell is detected, and obtain;And/or the detection user equipment is in described cell
Data transmission quality.
Particularly, the reference signal of described cell and the reference signal of the neighboring community are believed including at least common reference
Number, demodulated reference signal or channel state information reference signals.
Particularly, when the reference signal of described cell and the neighboring community is demodulated reference signal, the demodulation
Scrambling mark is included at least in reference signal, for obtaining demodulated reference signal sequence, to obtain the function of the reference signal
Rate is horizontal.
Particularly, carrying out screening to the neighboring community interfered according to the result of the detection includes that will meet
The ratio between described cell reference signals and neighboring community's reference signal power are in the neighboring community of predetermined interval as process
The neighboring community of screening.
Particularly, the standard screened to the neighboring community interfered is to preset in a user device
, or configured by described cell base station.
Particularly, the detection user equipment is included at least in the data transmission quality of described cell, to channel
The case where quality instruction or hybrid automatic repeat-request, is detected.
Particularly, the method further includes being disturbed according to the testing result to the data transmission quality to screen
Physical Resource Block pair, and the information report by the Physical Resource Block screened to process to the neighboring community interfered
It accuses to the base station of described cell.
Another embodiment of the application provides a kind of user equipment for implementing either above-mentioned method.
The method of NAICS is triggered provided in the embodiment of the present invention and user equipment has been filled up in the LTE technology of 3GPP
Blank in relation to NAICS trigger mechanism provides the mechanism of the UE triggering NAICS of low cost a kind of.This mechanism not only for
More there is specific aim, and the disturbing factor in terms of also contemplating data while interfering in terms of considering power for UE,
The case where interference is eliminated is carried out so as to more accurate screening out, improves the efficiency for carrying out interference elimination.
Detailed description of the invention
Fig. 1 show the method flow diagram that NAICS is triggered by UE provided according to an embodiment of the present invention;
Fig. 2 show the part the DM-RS configuration information for X2 interface provided according to an embodiment of the present invention and illustrates
Figure;
Fig. 3 show the UE provided according to an embodiment of the present invention into the part messages that this cell base station is reported
Hold schematic diagram;
Fig. 4 show the part messages content schematic diagram that the UE provided according to an embodiment of the present invention is reported;With
And
Fig. 5 show the structural schematic diagram of the UE of the execution triggering NAICS method provided according to an embodiment of the present invention.
Specific embodiment
The manufacture and use of embodiments herein are discussed further below.However, it should be understood that the present invention provides
Many feasible inventive concepts that can implement under various specific backgrounds.The specific embodiment discussed is only to illustrate to manufacture
With use concrete mode of the invention, do not limit the scope of the invention.
Fig. 1 is shown according to the method flow diagram for triggering NAICS provided by the application one embodiment by UE.In step
The interference that rapid 102, UE generates neighboring community detects.To neighboring community generate interference carry out detection may include it is multiple
Aspect.According to one embodiment, the detection may include the ginseng of reference signal and neighboring community to this cell where UE
The ratio between both the power for examining signal is detected, and obtain.
According to one embodiment, the reference signal of this cell and neighboring community can be public reference signal (cell-
Specific reference signal, abbreviation CRS).In the LTE system using CRS, UE can by this cell and
The reception power (reference signal received power, abbreviation RSRP) of the CRS reference signal of neighboring community carries out
The ratio between both detection, and obtain.Lte-a system no longer uses CRS signal, then can also be by demodulated reference signal
(demodulation reference signal, abbreviation DM-RS) or channel state information reference signals (channel state
, lnformation reference signal, abbreviation CSI-RS) interference of neighboring community is detected.
According to one embodiment, in the system using DM-RS, the DM-RS signal of different community can share identical money
Source position.Since different DM-RS signals is to be packaged to transmit with PDSCH, repeated to make by neighboring community in called resource
Under the premise of, if UE can obtain the DM-RS signal sequence of neighboring community, so that it may know that neighboring community produces PDSCH
Raw interference.
It can be further detailed by example below.Assuming that there are a serving cell A and two in system
A the cell B and C adjacent with A.Signal received by UE in A is Y, and the DM-RS sequence of these three cells is respectively SA,
SBAnd Sc, the power invariability matrix that precoding is carried out to corresponding base station is respectively XA, XBAnd Xc, and precoding is experienced wireless
Channel is HA, HBAnd Hc.So Y can be indicated by formula below (1):
Since pre-encode operation can't change the power level of transmitting signal, equivalent channelWarp can also be represented
Transmission power after crossing channel path loss is horizontal.That is, if UE can know SA, SBAnd ScSequence, so that it may obtain,,Mean power.
According to the generation mechanism of existing DM-RS sequence it is found that the initialization of sequence is identified instruction n by scramblingsCIDWith add
Disturb markInfluence, wherein nSCIDValue be " 0 " or " 1 ", andBe then 0 ..., 503 } between
Integer.Therefore, as long as UE knows the two parameters of the DM-RS signal of adjacent cell transmission, so that it may know DM-RS signal
Power level.So either in order to trigger NAICS, or in order to realize that the interference of PDSCH to PDSCH is eliminated, UE is required
Know the configuration information of the DM-RS signal of neighboring community.Therefore, existing DM-RS is configured and carries out certain adjustment.
Fig. 2 show the part the DM-RS configuration information schematic diagram for X2 interface.Certainly, the configuration information of DM-RS may be used also
With by the way of a lot of other, as long as can be realized makes to could be aware that respective neighboring community DM-RS signal between cell each other
Scrambling mark.
According to another embodiment of application, the detection to neighbor cell interference can also include transmitting matter to the data of UE
Amount is detected.The reason of carrying out this operation is, in existing wireless resource management/Radio Link Management (radio
Resource management, abbreviation RRM/radio link management, abbreviation RLM) detection in, although neighboring community
Power may be more much higher than the power of this cell, will not but if the traffic of neighboring community is extremely limited
Serious interference is caused to the UE of this cell.In this case, cochannel interference not will cause very big performance loss.Base
In this reason, (channel quality indicator, abbreviation CRI) and mixing can also be indicated channel quality certainly
Dynamic retransmission request (hybrid automatic repeat request, abbreviation HARQ) is detected, to know the data of UE
Transmission quality situation.
In step 104, UE can be screened neighboring community according to the testing result of step 102.Because not needing
The neighboring community of all generation interference detected is all carried out eliminating interference processing.It is only more than predetermined refer to for testing result
The interference that target neighboring community generates just needs to be eliminated.This scheduled index can be in the production process of UE just by
Pre-set, it is also possible to by base station configuration, and for example, by system broadcast information (SIB-x) or the specific RRC of UE
Signaling sends UE to.
According to one embodiment, [- 9dB ,+9dB] can be for the range of the desired indicator of power ratio, that is to say, that this
The neighboring community that the reference signal power of cell and the reference signal power ratio of neighboring community fall in this range can be made
For the neighboring community of the generation interference by screening.Certainly, this range is only an example, according to different applicable cases
Different indexs can be set.
According to another embodiment, UE can also be according to scheduled index, based on detected CQI, the parameters such as HARQ
Serious Physical Resource Block is disturbed to (physical resource block, abbreviation PRB) to filter out.
In step 106, the information of the neighboring community that interferes of the UE to the base station report of this cell by screening.Fig. 3
It is shown the message partial content schematic diagram for the neighboring community that UE is reported to this cell base station by screening, this report can adopt
It is transmitted with any type of message.According to one embodiment, the mark of the neighboring community by screening can be according to power
Being arranged sequentially in report from high to low.
According to another embodiment, for data transmission quality situation, UE can to this cell base station report through being sieved
The information of the heavily disturbed PRB pair of choosing, and the information of neighboring community that these PRB pairs are interfered.Shown in Fig. 4
The message partial content schematic diagram by the heavily disturbed PRB pair by screening is reported to this cell base station for UE,
In include the mark of PRB pair and generate the mark of the neighboring community of interference to it.This report can use any form
Message transmitted.Furthermore it is also possible to which PRB group reports disturbed condition as unit, PRB group may include predetermined quantity
PRB pair.
According to the information that UE is reported, the base station of this cell can be issued according to the selection result received for different UE
Targeted auxiliary information, for eliminating and inhibiting influence caused by the neighboring community interfered to the particular UE.
Method documented by the application can be adapted for the UE in serving cell (serving ce11) or other cells.
According to one embodiment, UE can be decided whether to carry out to base station according to above-mentioned testing result report to
Trigger NAICS.If dry either in terms of reference signal power, or caused by data transmission, neighboring community
If disturbing below predeterminated level, UE may be selected by not reported to the base station of this cell.
Fig. 5 show the structural schematic diagram of the UE for executing the above method provided according to the application one embodiment.
UE500 includes that receiving module 502 and sending module 504 are used to execute the operation that sends and receivees in the above method, and monitoring
Module 506 is used to execute detection and the operation such as judgement and control in the above method.
Those skilled in the art are easy for learning, can change material and method in the scope of the utility model.Also
It should be understood that the utility model provides many applicable wounds other than the specific context for illustrating embodiment
New property concept.Correspondingly, appended claims be intended to by such process, machine, manufacture, substance synthesis, device, method or
Step is included in their scope.
Claims (9)
1. a kind of method that user equipment triggering network assistance interference is eliminated and inhibited, comprising:
Detect the interference that neighboring community generates；
The neighboring community interfered is screened according to the result of the detection；And
The letter of the neighboring community interfered to the base station report of this cell locating for the user equipment by screening
Breath, for the content for eliminating and inhibiting the auxiliary information interfered and receiving the auxiliary information for described cell base station
Object is determined.
2. the method as described in claim 1, wherein the interference that the detection neighboring community generates includes
The power of the reference signal and the reference signal of the neighboring community of described cell is detected, and obtains the two
Than；And/or
The user equipment is detected in the data transmission quality of described cell.
3. method according to claim 2, wherein the reference signal of the reference signal of described cell and the neighboring community
Including at least one of the following: public reference signal, demodulated reference signal and channel state information reference signals.
4. method as claimed in claim 3, wherein when the reference signal of described cell and the neighboring community is demodulation ginseng
Scrambling mark is included at least when examining signal, in the demodulated reference signal, for obtaining demodulated reference signal sequence, to obtain
The power level of the reference signal.
5. method according to claim 2, wherein according to the result of the detection to the neighboring community interfered into
Row screening includes that will meet the ratio between described cell reference signals and neighboring community's reference signal power described in the predetermined interval
Neighboring community is as the neighboring community by screening.
6. method according to claim 2, wherein the standard screened to the neighboring community interfered is preparatory
It is arranged in a user device, or configured by described cell base station.
7. method according to claim 2, wherein the detection user equipment transmits matter in the data of described cell
Amount includes at least, and detects to the case where channel quality instruction or hybrid automatic repeat-request.
8. the method for claim 7, further including being screened according to the testing result to the data transmission quality by dry
The Physical Resource Block pair disturbed, and will be to letter of the Physical Resource Block to the neighboring community interfered for passing through screening
Base station of the breath report to described cell.
9. a kind of based on the user equipment that method triggering network assistance interference is eliminated and inhibited either described in claim 1-8.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419585.6A CN104469815B (en) | 2013-09-13 | 2013-09-13 | A method and user equipment for triggering network-assisted interference cancellation and suppression |
| PCT/IB2014/002107 WO2015036861A2 (en) | 2013-09-13 | 2014-09-11 | Method and user equipment for triggering network assisted interference cancellation and suppression |
| TW103131575A TW201532453A (en) | 2013-09-13 | 2014-09-12 | Method and user equipment for triggering network assisted interference cancellation and suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310419585.6A CN104469815B (en) | 2013-09-13 | 2013-09-13 | A method and user equipment for triggering network-assisted interference cancellation and suppression |
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| Publication Number | Publication Date |
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| CN104469815A CN104469815A (en) | 2015-03-25 |
| CN104469815B true CN104469815B (en) | 2019-04-05 |
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| CN201310419585.6A Active CN104469815B (en) | 2013-09-13 | 2013-09-13 | A method and user equipment for triggering network-assisted interference cancellation and suppression |
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| Country | Link |
|---|---|
| CN (1) | CN104469815B (en) |
| TW (1) | TW201532453A (en) |
| WO (1) | WO2015036861A2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209301A (en) * | 2015-04-30 | 2016-12-07 | 电信科学技术研究院 | A kind of interference information indicating method, interference delet method and device |
| CN113597018A (en) * | 2015-07-07 | 2021-11-02 | 索尼公司 | Auxiliary communication device and method, wireless access point and method thereof |
| CN106487488A (en) * | 2015-08-25 | 2017-03-08 | 电信科学技术研究院 | The sending, receiving method of control signaling, the network equipment and receiving device |
| WO2017201674A1 (en) | 2016-05-24 | 2017-11-30 | 广东欧珀移动通信有限公司 | Method and device for eliminating inter-cell interference |
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| US8855570B2 (en) * | 2009-02-05 | 2014-10-07 | Telefonaktiebolaget L M Ericsson (Publ) | Coexistence of plural wireless communication transceivers in close proximity |
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2013
- 2013-09-13 CN CN201310419585.6A patent/CN104469815B/en active Active
-
2014
- 2014-09-11 WO PCT/IB2014/002107 patent/WO2015036861A2/en not_active Ceased
- 2014-09-12 TW TW103131575A patent/TW201532453A/en unknown
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| CN101959207A (en) * | 2009-07-17 | 2011-01-26 | 联芯科技有限公司 | Method and device for measuring neighboring cell |
| CN102056127A (en) * | 2009-11-03 | 2011-05-11 | 杰脉通信技术(上海)有限公司 | Method for selecting same-frequency interference cell list on TDD UE side |
| WO2012154100A1 (en) * | 2011-05-12 | 2012-11-15 | Telefonaktiebolaget L M Ericsson (Publ) | Methods in base stations, base stations, computer programs and computer program products |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104469815A (en) | 2015-03-25 |
| TW201532453A (en) | 2015-08-16 |
| WO2015036861A3 (en) | 2015-08-06 |
| WO2015036861A2 (en) | 2015-03-19 |
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Address after: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Patentee after: Nokia Communications (Shanghai) Co., Ltd. Country or region after: China Patentee after: ALCATEL LUCENT Country or region after: France Address before: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Patentee before: NOKIA SHANGHAI BELL Co.,Ltd. Country or region before: China Patentee before: ALCATEL LUCENT Country or region before: France |