CN104185215B - The merging treatment method of control information - Google Patents
The merging treatment method of control information Download PDFInfo
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- CN104185215B CN104185215B CN201310192253.9A CN201310192253A CN104185215B CN 104185215 B CN104185215 B CN 104185215B CN 201310192253 A CN201310192253 A CN 201310192253A CN 104185215 B CN104185215 B CN 104185215B
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Abstract
This application discloses a kind of merging treatment method of control information, cooperation cell will be transferred to main serving cell to the state-detection value, correlation peak and the noise variance that are obtained after uplink antenna data processing in this method, and the merging treatment of control information is completed by main serving cell.Using the present invention, it is possible to reduce the volume of transmitted data of minizone, system resource is saved, at the same time it can also obtain the performance gain of cooperative multipoint transmission scene lower edge user.
Description
Technical field
The present invention relates to mobile communication technology, more particularly to the merging treatment side of control information in cooperative multipoint transmission
Method.
Background technology
Cooperative multipoint transmission（CoMP：Coordinated Multiple Points）Technology is based on each cooperative base station information
It is shared, the interference of original adjacent area is changed into known useful information, cell edge interference problem is efficiently solved, improves cell
Edge throughput and throughput of system, expand cell coverage area.In the uplink, the side of more eNB cooperative receptions is passed through
Formula, it is possible to achieve spatial domain macro-diversity improves Cell Edge User equipment to improve transmission performance（UE）Uplink throughput.It is this
Method need not adjust ascending resource allocation strategy, simple and easy, but it is to need to solve that more cooperation between base stations and data, which merge mode,
Key issue certainly.
In up CoMP system, the processing to ascending control information is to all cells using unification by main serving cell
Uplink receiving data merge what the mode of processing was realized, be specially：The up day that all cooperation cells will each receive
Line number evidence（Business information and control information）Main serving cell is transferred to, main serving cell receives up further according to all cells
Antenna data carries out multiple antennas integrated base-band processing, obtains the coherent detection information of uplink（Whether there are data including up
Successfully etc. whether transmission and transmission）.
Traditional merging treatment scheme to ascending control information, it can be obtained in theory for lifting marginal user performance
Best gain is obtained, however, it is desirable to the uplink antenna data received are sent to main serving cell by all cooperation cells, this
Sample, the transmission of a large amount of uplink antenna data can cause interface transmission data amount larger, and then cause the link between different districts
Expense is larger.
The content of the invention
In view of this, it is more cooperating it is a primary object of the present invention to provide a kind of merging treatment method of control information
Can be while effectively lifting marginal user performance gain using this method under point transmitting scene, the data for reducing minizone pass
Throughput rate.
In order to achieve the above object, technical scheme proposed by the present invention is：
A kind of merging treatment method of control information, including：
A, each serving cell for carrying out multipoint cooperative enters to this cell in the ascending control information that present sub-frame receives
Row OFDM demodulation, obtain data symbol and the frequency-region signal of reference symbol；
B, each serving cell is using the reference signal and frequency expansion sequence itself generated, to the data of this cell
Symbol and the frequency-region signal of reference symbol carry out related operation, and to each antenna in correlation result in the SC- of each time slot
FDMA symbols, summed in time domain and frequency domain；
C, used by each summed result and ascending control information of the serving cell according to this cell
PUCCH format, PUCCH ACK detections are carried out, obtain corresponding state-detection value；When the serving cell is cooperation cell,
The state-detection value of this cell is sent to main serving cell；
D, each serving cell is adjudicated according to the summed result of this cell it is determined that being used for discontinuous transmitting DTX
Correlation peak and noise variance value；When the serving cell is cooperation cell, the institute of this cell is sent to main serving cell
State correlation peak and the noise variance value；
E, the main serving cell judges according to the correlation peak and noise variance value of each serving cell
Whether the subframe has data transfer, and according to the judged result, sets dispatch request（SR）Transmission mark or ACK transmission marks
Will；
F, when judged result instruction has data transfer, main serving cell examines the state of all serving cells
Measured value is summed, and is examined the ACK information bit corresponding to the minimum state parameter of summed result intermediate value as the transmission of the subframe
Survey result.
In summary, in the merging treatment method of control information proposed by the present invention, cooperation cell will be to uplink antenna number
Main serving cell is transferred to according to the state-detection value, correlation peak and the noise variance that are obtained after processing, it is complete by main serving cell
Into the merging treatment of control information.So, compared to conventional method, it is possible to reduce the volume of transmitted data of minizone, save system
Resource, while the performance gain of cooperative multipoint transmission scene lower edge user can also be obtained.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in further detail.
The present invention core concept be：Part processing is first carried out to the uplink antenna data received by cooperation cell, obtained
To corresponding state-detection value, correlation peak, noise variance value, these information are then issued into main serving cell again, by main clothes
Cell of being engaged in is according to state-detection value, correlation peak, the noise variance value of all cells, to be controlled the merging treatment of information,
Obtain the coherent detection information of final uplink.So, due to only needing transmission state detected value, correlation peak, noise side
Difference and non-primary uplink antenna data, therefore, the volume of transmitted data of minizone can be effectively reduced, and then reduce different districts
Between link overhead, further, since merging treatment final or that control information is completed by main serving cell, network issue end
The control information at end（SR/ACK/NACK signals）Only sent from the main serving cell of terminal, therefore obvious performance can be obtained
Gain.
Fig. 1 is the schematic flow sheet of the embodiment of the present invention one, as shown in figure 1, the embodiment mainly includes：
Step 101, carry out the upload control that each serving cell of multipoint cooperative receives to this cell in present sub-frame
Information carries out OFDM demodulation, obtains data symbol and the frequency-region signal of reference symbol.
In this step, with existing method except that each serving cell is required for the ascending control information to receiving
OFDM demodulation is carried out, rather than the data received are directly issued into main serving cell by cooperation cell, by main serving cell pair
The data of all cells are handled to obtain the testing result of current transmission, so, it is possible to reduce the volume of transmitted data of minizone.
In this step, it is specific carry out OFDM demodulation obtain the method for data symbol and the frequency-region signal of reference symbol compared with
System, it will not be repeated here.
Step 102, each serving cell are using the reference signal and frequency expansion sequence itself generated, to the institute of this cell
The frequency-region signal for stating data symbol and reference symbol carries out related operation, and to each antenna in correlation result in each time slot
Single-carrier frequency division multiple access（SC-FDMA）Symbol, summed in time domain and frequency domain.
The reference signal and frequency expansion sequence of itself generation will be utilized in this step by each cell, respectively to described in this cell
Data symbol and the frequency-region signal of reference symbol carry out related operation, and correlated results is summed in time domain and frequency domain,
Specific method will not be repeated here compared with the reception data handling procedure of single cell in system.
Step 103, each serving cell are adopted according to the summed result and ascending control information of this cell
Physical uplink control channel（PUCCH）Form, PUCCH ACK detections are carried out, obtain corresponding state-detection value；
When the serving cell is cooperation cell, the state-detection value of this cell is sent to main serving cell.
Here, for cooperation cell, it is necessary to be that the state-detection value reports main serving cell by ACK testing results,
So that testing result of the main serving cell hereafter based on each cell determines the transmission testing result of present sub-frame.
In this step, when carrying out ACK detections, it will be carried out according to currently employed PUCCH format.Need what is illustrated
It is that ascending control information includes PUCCH format 1/1a/1b and PUCCH format 2/2a/2b, and the present invention will be only for form 1/1a/
1b, abbreviation form 1x.Wherein, form 1 is dispatch request（SR）Signal, form 1a are 1 bit ACK, and form 1b is 2 bit ACKs.
Specifically, if the form of the PUCCH is 1a, corresponding state-detection value is 2 state detected value T=[t_0 t_1], wherein,
The state parameter that it is 1 for indicating ACK bit information that t_0, which is, the state parameter that it is 0 for indicating ACK bit information that t_1, which is,；
If the form of the PUCCH is 1b, corresponding state-detection value is 4 state detected value T=[t_00 t_01 t_10 t_11],
Wherein, the state parameter that it is 00 for indicating ACK bit information that t_01, which is, t_01 are for indicating that ACK bit information is 01
State parameter, the state parameter that it is 10 for indicating ACK bit information that t_10, which is, t_11 are for indicating that ACK bit information is
11 state parameter.
It is preferred that this step can be according to the method for Maximum Likelihood Detection, to carry out PUCCH ACK detections, specific method
Grasped, will not be repeated here by those skilled in the art.
Step 104, each serving cell are according to the summed result of this cell, it is determined that the phase for DTX judgements
Close peak value and noise variance value；When the serving cell is cooperation cell, the phase of this cell is sent to main serving cell
Close peak value and noise variance value.
Step 105, the main serving cell according to the correlation peak and noise variance value of each serving cell,
Judge whether there is data transfer in the subframe, and according to the judged result, dispatch request is set（SR）Transmission mark or ACK
Transmission mark.
It is preferred that judge whether there is data transfer specifically to use following two methods in the subframe in this step：
Method one：Judge whether A/B is more than default threshold value, if it is, determining that the subframe has data transfer, otherwise
Determine that the subframe does not have data transfer；Wherein, A is the maximum in the correlation peak of all serving cells, and B is all
The average value of the noise variance value of serving cell.
Method two：Judge whether A/B is more than default threshold value, if it is, determining that the subframe has data transfer, otherwise
Determine that the subframe does not have data transfer；Wherein, A is the maximum in the correlation peak of all serving cells, and B is described
The noise variance value of serving cell corresponding to A.
The difference of above two method is the value of the B, and B is the noise side of all serving cells in method one
The average value of difference, can so improve estimated accuracy, and B is the noise variance value of serving cell corresponding to the A in method two,
Treating capacity can be so reduced, those skilled in the art can select suitable method according to being actually needed in actual applications.It is described
Threshold value, it can be needed by those skilled in the art according to actual performance by emulating setting appropriate value.
After the judgement is completed in this step, if the PUCCH format that the ascending control information uses for 1, basis
The judged result, the SR transmission mark is set；If the PUCCH format that the ascending control information uses is 1a or 1b
When, then according to the judged result, the ACK transmission mark is set.
Step 106, when judged result instruction has data transfer, main serving cell is by all serving cells
State-detection value is summed, using the ACK information bit corresponding to the minimum state parameter of summed result intermediate value as the subframe
Transmit testing result.
In this step, when judged result instruction has data transfer, main serving cell is by all serving cells
The summation of state-detection value, the ACK information bit corresponding to the minimum state parameter of summed result intermediate value is the subframe
Testing result is transmitted, so, it can be ensured that transmit the accuracy of testing result.It is specific as follows to state shown in formula：
When ascending control information is using PUCCH format 1a,
When ascending control information is using PUCCH format 1b,
From above-mentioned technical proposal, for the present invention unlike existing method, existing method is by the reception number of all cells
According to putting together, the unified OFDM demodulation etc. that carries out is handled, and then carries out DTX judgements further according to PUCCH format and ACK is detected, and
It is of the invention then be independently carried out by each cell receive data processing and corresponding state-detection, so, it is only necessary to will be used for
Correlation peak, noise variance value and the state-detection result for ACK detections of DTX judgements issue main serving cell,
DTX detections finally are carried out according to the above-mentioned data of each cell by main serving cell again, determine the transmission detection knot of present sub-frame
Fruit.This process resource that make use of each cell, a small amount of control information is shared from cooperation cell to main serving cell, finally by
Main serving cell complete control information merging treatment method, can effectively lifting marginal user performance gain while,
The link overhead between different districts is effectively reduced, reduces the processing load of each serving cell.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of merging treatment method of control information, it is characterised in that including：
A, each serving cell for carrying out multipoint cooperative is carried out to this cell in the ascending control information that present sub-frame receives
OFDM demodulation, obtain data symbol and the frequency-region signal of reference symbol；
B, each serving cell is using the reference signal and frequency expansion sequence itself generated, to the data symbol of this cell
Related operation is carried out with the frequency-region signal of reference symbol, and SC-FDMA of each antenna in correlation result in each time slot is accorded with
Number, summed in time domain and frequency domain；
C, each serving cell is according to PUCCH lattice used by the summed result and ascending control information of this cell
Formula, PUCCH ACK detections are carried out, obtain corresponding state-detection value；When the serving cell is cooperation cell, to main clothes
Business cell sends the state-detection value of this cell；
D, each serving cell is according to the summed result of this cell, it is determined that the phase for discontinuous transmitting DTX judgement
Close peak value and noise variance value；When the serving cell is cooperation cell, the phase of this cell is sent to main serving cell
Close peak value and noise variance value；
E, the main serving cell is judged described according to the correlation peak and noise variance value of each serving cell
Whether subframe has data transfer, and according to the judged result, sets dispatch request SR transmission mark or ACK transmission marks；
F, when judged result instruction has data transfer, main serving cell is by the state-detection value of all serving cells
Summation, knot is detected using the ACK information bit corresponding to the minimum state parameter of summed result intermediate value as the transmission of the subframe
Fruit.
2. according to the method for claim 1, it is characterised in that according to the method for Maximum Likelihood Detection in step c, carry out
PUCCH ACK detections.
3. according to the method for claim 1, it is characterised in that step c further comprises：
If the PUCCH format is 1a, corresponding state-detection value is 2 state detected value T=[t_0t_1], wherein, t_0 is
For indicating ACK bit information as 1 state parameter, the state parameter that it is 0 for indicating ACK bit information that t_1, which is,；
If the PUCCH format is 1b, corresponding state-detection value is 4 state detected value T=[t_00t_01t_10t_11],
Wherein, the state parameter that it is 00 for indicating ACK bit information that t_00, which is, t_01 are for indicating that ACK bit information is 01
State parameter, the state parameter that it is 10 for indicating ACK bit information that t_10, which is, t_11 are for indicating that ACK bit information is
11 state parameter.
4. according to the method for claim 1, it is characterised in that judge whether there is data in the subframe described in step e
Transmission includes：
Judge whether A/B is more than default threshold value, if it is, determining that the subframe has data transfer, otherwise determine the son
Frame does not have data transfer；Wherein, A is the maximum in the correlation peak of all serving cells, and B is all serving cells
The average value of the noise variance value.
5. according to the method for claim 1, it is characterised in that judge whether there is data in the subframe described in step e
Transmission includes：
Judge whether A/B is more than default threshold value, if it is, determining that the subframe has data transfer, otherwise determine the son
Frame does not have data transfer；Wherein, A is the maximum in the correlation peak of all serving cells, and B is to be taken corresponding to the A
The noise variance value for cell of being engaged in.
6. according to the method for claim 1, it is characterised in that the step e further comprises：
When the PUCCH format is 1, according to the judged result, the SR transmission mark is set；
When the PUCCH format is 1a or 1b, according to the judged result, the ACK transmission mark is set.
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| CN201310192253.9A CN104185215B (en) | 2013-05-22 | 2013-05-22 | The merging treatment method of control information |
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| US11218287B2 (en) | 2017-09-29 | 2022-01-04 | Beijing Xiaomi Mobile Software Co., Ltd. | Signal transmission method and device |
| CN110289892B (en) * | 2019-05-23 | 2022-07-15 | 武汉虹信科技发展有限责任公司 | Data transmission method and communication base station |
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| CN102118811A (en) * | 2009-12-31 | 2011-07-06 | 普天信息技术研究院有限公司 | Method and user equipment for feeding information back to network side |
| CN102340383A (en) * | 2010-07-23 | 2012-02-01 | 中兴通讯股份有限公司 | Feedback method and device for channel information in coordinated multipoint transmission/reception (COMP) |
| CN102821473A (en) * | 2011-06-09 | 2012-12-12 | 中兴通讯股份有限公司 | Method and system for cooperative scheduling of CoMP (coordinated multipoint transmission) terminal |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101605395A (en) * | 2009-07-06 | 2009-12-16 | 北京邮电大学 | Feedback method of channel status information in the multiuser mimo system |
| CN102026280A (en) * | 2009-09-11 | 2011-04-20 | 中国移动通信集团公司 | Feedback method and equipment for channel state information |
| CN102064925A (en) * | 2009-11-18 | 2011-05-18 | 中兴通讯股份有限公司 | Adaptive retransmission method, device and system |
| CN102118811A (en) * | 2009-12-31 | 2011-07-06 | 普天信息技术研究院有限公司 | Method and user equipment for feeding information back to network side |
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