CN102082622A - UL CoMP (Uplink Coordinated Multi-Point) efficient data merging method based on direct transmission after judgment - Google Patents
UL CoMP (Uplink Coordinated Multi-Point) efficient data merging method based on direct transmission after judgment Download PDFInfo
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Abstract
The invention discloses a UL CoMP (Uplink Coordinated Multi-Point) efficient data merging method based on direct transmission after judgment, belonging to the technical field of radio communication, and in particular relating to a multi-base-station corporative information interaction and radio communication system information merging detecting method. The method achieves the purposes of reducing the feedback quantity required by passing through an interface X2, furthest improving the system performance on the basis of the low feedback quantity, and achieving better compromise between the feedback quantity and the system performance.
Description
Technical field
The invention belongs to wireless communication technology field, particularly mutual the and wireless communication system information merging detection method of many base stations cooperative information.
Background technology
In radio communication, the application that communication for coordination is the most successful is exactly a cooperative multipoint transmission, and it is the enhancement mode transmission technology of wanting most of LTE Advance, is the effective ways that solve Cell Edge User and average throughput.In mobile communication system, because the UE of cell edge is in interference-limited environment, (Inter-Cell Interference ICI), can reduce this regional average throughput so generally can to adopt fractional frequency reuse modes such as (FFR) to suppress presence of intercell interference.IMT-A covers for cell edge and the requirement of capacity in order to satisfy, and must adopt technology such as coordinate multipoint (CoMP), network MIM0.
In up link,, can realize that the grand diversity in spatial domain to improve transmission performance, improves the up throughput of the UE of cell edge by the antenna number that increases by the mode that many eNB cooperations receive.This method does not need the ascending resource allocation strategy is adjusted, and is a kind of simple method.And the cooperation between base stations of up many base station reception data and data merge mode for cooperative multipoint transmission, are key issues that needs solution.
Summary of the invention
The present invention proposes the judgement back and directly transmit the method that (DT) realizes that the ascending multi-point collaboration communication data merges, adopt this method can reduce the feedback quantity that X2 interface needs in a large number, and on performance, also merge (SC) and promote much, between feedback quantity and performance, found one well to trade off than existing selection.
Innovation part of the present invention is: proposed the judgement back and directly transmitted the method that (DT) realizes that the ascending multi-point collaboration communication data merges, and revised X2 interface and need the feedback data pattern, found good balance between reduction feedback quantity and the elevator system performance.
The present invention proposes the reception data and its bit error rate that obtains by current channel conditions estimation of the collaborative base station of feedback on the basis of directly feeding back different base station reception data; Can recently detect merging by the log-likelihood that recently replaces direct every bit directly to calculate with whole Bit Error Rate Computation log-likelihood at dominant base.
1, system configuration
UL CoMP supposes that Multi-cell UE resides at eNB as shown in Figure 1
A, eNB
BAnd eNB
CThe edge of these three websites, we select eNB
AAs the main eNB of this UE, then two other becomes auxiliary eNB.In the uplink process, the upstream data of Multi-cell UE is eNB respectively
A, eNB
BAnd eNB
CThese three websites receive.
Each eNB can carry out verification to the data flow that receives separately, between main eNB and auxiliary eNB, carry out data interaction by X2 interface then, share the information after receiving separately, the data that the last strategy of setting according to us will receive separately merge, and merge our final uplink information at main eNB.
2, based on the directly transmission of judgement back
2.1 based on the directly transmission method brief introduction of judgement back
Existing X2 interface message transmission strategy comprises to be selected to merge and two kinds of strategies of high specific merging, but there is the too high and excessive problem of X2 interface feedback quantity of the error rate respectively, we have proposed the strategy based on the direct transmission in judgement back, in the direct transmission method in judgement back, three eNB detect judgement and verification to the data that receive respectively, two kinds of check results may occur:
If a. have an eNB verification correct, then the UL transmission success.If eNB
AReceive correctly, then do not have data to transmit by X2interface, otherwise, need be from eNB
BOr eNB
CTo eNB
AThe transmission data, each upstream data bit needs the X2interface flow of 1bit.
If b. whether there is the eNB verification correct.ENB
BAnd eNB
CThe data result that will obtain after will adjudicating by X2interface directly is passed to eNB
A, need simultaneously and will estimate that by current channel conditions the bit error rate that obtains is transferred to eNB
A, at eNB
AThe result who receives is merged detection obtain final result.Each upstream data bit needs the X2interface flow (the bit-error rate results data volume is very little, can ignore) of 2bit.Suppose that the transmission data are b[n] ∈ 0,1}, (n=1 ... N).If eNB
BAnd eNB
CThe data that judgement obtains after receiving are respectively
With
The judgement bit error rate is respectively P
BAnd P
CENB
ADirect reception detects the log-likelihood ratio that obtains:
2.2 based on the step of directly transmitting after the judgement
The first step: at eNB
A, eNB
BAnd eNB
CCarry out data check respectively,, then directly send and confirm transmission success to UE if there is an eNB verification correct.
Second step: if eNB
AVerification is correct, directly to the upper strata data delivery, and this transmission success.
The 3rd step: if eNB
ACheck errors, but eNB
BAnd eNB
CHave one correct, then from correct eNB to eNB
ATransmit correct data by X2 interface, by eNB
ATo the upper strata data delivery, this transmission success.
The 4th step: if all eNB check errors, then eNB
BAnd eNB
CDirectly to eNB
AData result after the transmission judgement reaches the bit error rate that each website estimates from current channel conditions.
The 5th step: use eNB
BAnd eNB
CBit error rate P
BAnd P
CCalculate log-likelihood ratio separately
With
The 7th step: merge according to 3 websites log-likelihood ratio separately that calculates above and to draw last judgement data result:
Description of drawings
Fig. 1 UL CoMP schematic diagram.
Claims (2)
1. based on the UL CoMP efficient data merging method of directly transmitting after the judgement, when existing the eNB data check correct, directly adopt its checking data, and under all eNB data check error situations, then adopt from eNB and directly transmit judgement data and current eNB estimation bit error rate to main eNB, the bit error rate that adopts the overall channel situation to draw replaces the individual data Bit Error Rate Computation to go out log-likelihood ratio, carries out final efficient data and merges.
2. according to the described efficient data of claim 1 merging method, provide the merging processing method, comprise following step:
Step 1: at eNB
A, eNB
BAnd eNB
CCarry out data check respectively,, then directly send and confirm transmission success to UE if there is an eNB verification correct;
Step 2: if eNB
AVerification is correct, directly to the upper strata data delivery, and this transmission success;
Step 3: if eNB
ACheck errors, but eNB
BAnd eNB
CHave one correct, then from correct eNB to eNB
ATransmit correct data by X2 interface, by eNB
ATo the upper strata data delivery, this transmission success;
Step 4: if all eNB check errors, then eNB
BAnd eNB
CDirectly to eNB
AData result after the transmission judgement reaches the bit error rate that each website estimates from current channel conditions;
Step 7: merge according to 3 websites log-likelihood ratio separately that calculates above and to draw last judgement data result:
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014187211A1 (en) * | 2013-05-23 | 2014-11-27 | 中兴通讯股份有限公司 | Error correction method and apparatus for radio link data |
CN104283644A (en) * | 2014-11-03 | 2015-01-14 | 大唐移动通信设备有限公司 | Data decoding method and equipment with uplink coordinated multiple points |
US9496998B2 (en) | 2012-05-25 | 2016-11-15 | Huawei Technologies Co., Ltd. | Method, apparatus and system for uplink data transmission |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101257338A (en) * | 2007-03-02 | 2008-09-03 | 上海贝尔阿尔卡特股份有限公司 | Method and device for transmitting signal with distributed aerial |
CN101483458A (en) * | 2009-02-13 | 2009-07-15 | 东南大学 | Information interactive combining method in collaboration multi-point receiving |
-
2009
- 2009-11-27 CN CN2009102164128A patent/CN102082622A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101257338A (en) * | 2007-03-02 | 2008-09-03 | 上海贝尔阿尔卡特股份有限公司 | Method and device for transmitting signal with distributed aerial |
CN101483458A (en) * | 2009-02-13 | 2009-07-15 | 东南大学 | Information interactive combining method in collaboration multi-point receiving |
Non-Patent Citations (2)
Title |
---|
ALCATEL-LUCENT SHANGHAI BELL, ALCATEL-LUCENT: "Efficient uplink coordinated multi-point reception with reduced backhauling cost", 《3GPP TSG RAN WG1 #56 R1-091478》 * |
ZTE: "Uplink CoMP Joint Processing Schemes", 《3GPP TSG-RAN WG1 #55 R1-090414》 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9496998B2 (en) | 2012-05-25 | 2016-11-15 | Huawei Technologies Co., Ltd. | Method, apparatus and system for uplink data transmission |
WO2014187211A1 (en) * | 2013-05-23 | 2014-11-27 | 中兴通讯股份有限公司 | Error correction method and apparatus for radio link data |
US9838155B2 (en) | 2013-05-23 | 2017-12-05 | Xi'an Zhongxing New Software Co., Ltd. | Error correction method and apparatus for radio link data |
CN104283644A (en) * | 2014-11-03 | 2015-01-14 | 大唐移动通信设备有限公司 | Data decoding method and equipment with uplink coordinated multiple points |
CN104283644B (en) * | 2014-11-03 | 2018-06-19 | 大唐移动通信设备有限公司 | A kind of data decoding method and equipment of uplink collaboration multiple spot |
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Application publication date: 20110601 |