CN103138902B - Data transmission method for uplink and device - Google Patents
Data transmission method for uplink and device Download PDFInfo
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- CN103138902B CN103138902B CN201110377974.8A CN201110377974A CN103138902B CN 103138902 B CN103138902 B CN 103138902B CN 201110377974 A CN201110377974 A CN 201110377974A CN 103138902 B CN103138902 B CN 103138902B
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Abstract
The invention discloses a kind of data transmission method for uplink and device, this method includes：The RSRP information that service transmission point is reported according to receiving point, determines the cooperation transmitting point set of candidate；The channel condition information that service transmission point feeds back according to receiving point, selects the cooperation for sending data to launch point set among the cooperation transmitting point set of candidate；Service transmission point with for send data cooperate transmitting point set in cooperation launch point by cooperation mode give receiving point transmission data.The present invention is not on the basis of feedback overhead is increased so that the selection of cooperation transmitting point set is more accurate, improves the performance of coordinate multipoint data transmission.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of data transmission method for uplink and device.
Background technology
With the fast development of wireless communication technology, the frequency spectrum resource of wretched insufficiency is increasingly becoming restriction Development of Wireless Communications
Principal element, how to make full use of limited frequency spectrum resource, improve the great difficult problem that the availability of frequency spectrum is radio communication.It is more defeated
Enter multi output (Multiple-Input Multiple-Output, referred to as MIMO) technology because it can not increase the feelings of bandwidth
Efficiency of transmission and the availability of frequency spectrum are improved under condition and obtain extensive favor.MIMO technology make use of sky by launching and receiving diversity
Between diversity gain, antenna array gain make use of by beam forming technique, spatial reuse make use of by space multiplexing technique
Gain.Specifically, the weak dependence of diversity gain utilization space channel, and the selectivity in binding time/frequency, transmitting are obtained
Diversity provides more copies for the transmission of signal, and it is the multiple copies that have received transmission signal in space to receive diversity, and then
The reliability of signal transmission is improved, so as to improve the signal to noise ratio for receiving signal, such as space-frequency block codes (Space Frequency
Block Code)；The strong correlation of array gain utilization space channel is obtained, by installing small spacing aerial array so that empty
Between in the electromagnetic wave of transmission interference is produced to form the antenna pattern of highly directive so that the main lobe of antenna pattern is adaptive
Answer ground to point to arrival bearing user, so as to improve signal to noise ratio, improve power system capacity or coverage, such as single current beam forming
(Single StreamBeamforming)；Weak dependence of the spatial multiplex gains also with space channel is obtained, multiple
Different data flows are transmitted on separate space channel, so as to improve the peak rate of data transfer, such as multi-user
MIMO (Mutiple UserMultiple-Input Multiple-Output, referred to as MU-MIMO) can be in same asset
Data are sent on block (Resource Block, referred to as RB) simultaneously for multiple users.
In LTE Release 8/9, defining public reference signal, (Common Reference Signal are referred to as
CRS).User equipment (User Equipment, referred to as UE) can carry out channel measurement by CRS, be UE and Cell
The different MIMO transmission pattern of (enhancedNode Base station) selection and scheduling of resource provide basic reference letter
Breath.The supported transmission modes of LTERelease 8/9 include diversity, open loop Single User MIMO (Single User MIMO, letter
Referred to as SU-MIMO), closed loop Single User MIMO and closed loop MU-MIMO.
In LTE Release 10, new reference signal is defined：Channel information reference signal (Channel
StateInformation-Reference Signal, referred to as CSI-RS) it is exclusively used in channel measurement.UE can pass through CSI-RS
Measure and calculate to base station feedback pre-coding matrix index (Precoding Matrix Indicator, referred to as
PMl), channel quality information indicates (Channel Quality Indicator, referred to as CQI) and order instruction (Rank
Indicator, referred to as RI) etc. information.CSI-RS is further raising cell spectrum utilization rate, especially cell edge frequency spectrum
Utilization rate is there is provided possible, because CSI-RS is coordinate multipoint (Cooperative Multi-Point, referred to as CoMP) technology
Application provide may, CoMP technologies make MIMO technology be no longer limited to single cell, but multi-plot joint processing and can assist
Adjust, as shown in Figure 1.Descending CoMP technologies mainly include following two forms：
(1) cooperative scheduling/cooperative beam figuration (Coordinated Scheduling/Coordinated
Beamforming, referred to as CS/CB)：Data are only launched from serving cell, but UE scheduling or BF modes are total to by cooperation point
With completion.
(2) joint transmitting (Joint Transmission, referred to as JT)：Data by each cooperation point Combined Treatment,
I.e. each UE data are combined by all cooperation points launches, and to improve the quality of reception, eliminates interference.
No matter CS/CB or JT all suffers from a matter of utmost importance：The select permeability of cooperation cell set.At present, cooperate small
The selection principle of area's set is selected according to RSRP (Reference Signal Receiving Power) parameter.
RSRP is in Measurement bandwidth, the linear average for the signal power (unit W) that carrying CRS received over subcarriers is arrived, and typically takes
Reference signal on CRS R0, i.e. port 0.Gather cooperation cell：{ service Cell is less than thresholding with the RSRP ratios for the Cell that cooperates },
I.e.：Wherein RSRPsrvRepresent service Cell RSRP values, RSRPcoRepresent cooperation
Cell RSRP values.
But RSRP measurement period is than larger, typically physical layer RSRP measurement periods in 100ms rank, and
The frequency of use of cooperation cell set typically has 1000 times/second inside, it is clear that cooperation cell set updates slow, influence association
Make the correctness of the selection of set of cells.
The content of the invention
For in correlation technique, the selection of cooperation transmitting point set be based on RSRP, because RSRP measurement period is big,
Cause cooperation transmitting point set update it is slower so that influence cooperate launch point Resource selection correctness the problem of and propose this hair
It is bright, therefore, the invention provides a kind of data transmission method for uplink and device, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of data transmission method for uplink, including：Service transmission point is according to receiving point
The RSRP information reported, determines the cooperation transmitting point set of candidate；The channel status that service transmission point feeds back according to receiving point is believed
Breath, selects the cooperation for sending data to launch point set among the cooperation transmitting point set of candidate；Service transmission point is with using
Cooperation launch point in the cooperation transmitting point set of transmission data gives receiving point to send data by cooperation mode.
Preferably, the channel condition information that service transmission point feeds back according to receiving point, among the cooperation launch point of candidate
Selecting the cooperation for sending data to launch point set includes：The channel condition information that service transmission point feeds back according to receiving point,
Give receiving point configurating channel status information measurement transmitting point set；Service transmission point calculates channel condition information measurement transmitting point set
Close the launch point intersection of sets collection that cooperates with candidate；Service transmission point selects the cooperation for sending data to send out among common factor
Exit point set.
Preferably, service transmission point is among common factor, and selecting the cooperation for sending data to launch point set includes：Service
Launch point is among common factor, and selection meets formula CQIsrv-CQIco≤ Thresh cooperation launch point is constituted for sending data
Cooperation transmitting point set, wherein, CQIsrvRepresent service transmission point to the CQI value of receiving point, CQIcoRepresent cooperation launch point to connecing
The CQI value of sink, 3≤Thresh≤4.
Preferably, the channel condition information fed back in service transmission point according to receiving point, point set is launched in the cooperation of candidate
Selected among conjunction after the cooperation transmitting point set for sending data, the above method also includes：Service transmission point is in common factor
The one or more cooperation launch points for being unsatisfactory for formula are excluded, amendment cooperation transmitting point set is formed.
Preferably, the channel condition information fed back in service transmission point according to receiving point, point set is launched in the cooperation of candidate
Selected among conjunction for send data cooperation launch point set after, in addition to：Service transmission point and amendment cooperation launch point
Cooperation launch point in set sends data by cooperation mode to receiving point.
Preferably, the RSRP information that service transmission point is reported according to receiving point, determines the cooperation transmitting point set bag of candidate
Include：Selection meets formulaCooperation launch point composition candidate cooperation transmitting point set, its
In, RSRPsrvRepresent the RSRP values of service transmission point, RSRPcoRepresent the RSRP values of cooperation launch point, 0≤Thresh 1≤10.
According to another aspect of the present invention there is provided a kind of data sending device, including：Determining module, for servicing hair
The RSRP information that exit point is reported according to receiving point, determines the cooperation transmitting point set of candidate；Selecting module, for service transmission point
The channel condition information fed back according to receiving point, selects the cooperation for sending data among the cooperation transmitting point set of candidate
Launch point set；Sending module, launches for service transmission point with for sending the cooperation in the transmitting point set that cooperates of data
Point sends data by cooperation mode to receiving point.
Preferably, selecting module includes：Configure submodule, the channel status fed back for service transmission point according to receiving point
Information, gives receiving point configurating channel status information measurement transmitting point set；Calculating sub module, channel is calculated for service transmission point
The launch point intersection of sets collection that cooperates of point set and candidate is launched in status information measurement；Submodule is selected, for service transmission point
Among common factor, the cooperation for sending data is selected to launch point set.
Preferably, selection submodule includes：Selecting unit, for service transmission point among common factor, selection meets formula
CQIsrv-CQIcoPoint set is launched in the cooperation that≤Thresh cooperation launch point constitutes for sending data, wherein, CQIsrvRepresent
Service transmission point is to the CQI value of receiving point, CQIcoRepresent cooperation launch point to the CQI value of receiving point, 3≤Thresh≤4.
Preferably, said apparatus also includes：Processing module, the one of formula will be unsatisfactory for for service transmission point in common factor
Individual or multiple cooperation launch points are excluded, and form amendment cooperation transmitting point set.
The channel condition information that the present invention is fed back using receiving point, point set is launched in the cooperation based on the RSRP candidates selected
Further corrected in conjunction.Therefore, the present invention is not on the basis of feedback overhead is increased so that cooperation transmitting point set
Selection is more accurate, improves the performance of coordinate multipoint data transmission.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the CoMP schematic diagrames according to correlation technique；
Fig. 2 is the flow chart of data transmission method for uplink according to embodiments of the present invention；
Fig. 3 is according to the RSRP of the preferred embodiment of the present invention one measurements and measuring assembly schematic diagram；
Fig. 4 is according to the CQI of the preferred embodiment of the present invention one measurements and measuring assembly schematic diagram；
Fig. 5 is the CoMP set schematic diagram according to the preferred embodiment of the present invention one；
Fig. 6 is the CoMP set schematic diagram according to the preferred embodiment of the present invention two；
Fig. 7 is the CoMP set schematic diagram according to the preferred embodiment of the present invention three；
Fig. 8 is RSRP the and CQI instrumentation plans according to the preferred embodiment of the present invention four；
Fig. 9 is the structured flowchart of data sending device according to embodiments of the present invention；
Figure 10 is the structured flowchart of the data sending device according to the preferred embodiment of the present invention one；
Figure 11 is the structured flowchart of the data sending device according to the preferred embodiment of the present invention two.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The invention provides a kind of data transmission method for uplink, Fig. 2 is the stream of data transmission method for uplink according to embodiments of the present invention
Cheng Tu, as shown in Fig. 2 including steps S202 to step S206.
Step S202, the RSRP information that service transmission point is reported according to receiving point determines the cooperation transmitting point set of candidate；
Step S204, the channel condition information that service transmission point feeds back according to receiving point launches point set in the cooperation of candidate
The cooperation for sending data is selected to launch point set among conjunction；
Step S206, service transmission point passes through association with for sending the cooperation launch point in the transmitting point set that cooperates of data
Make mode and send data to receiving point.
In correlation technique, the selection of cooperation transmitting point set is, based on RSRP, because RSRP measurement period is big, to cause
Cooperation transmitting point set updates slower, so as to influence the correctness of cooperation launch point Resource selection.In the embodiment of the present invention, utilize
The channel condition information of receiving point feedback, is further repaiied in the cooperation transmitting point set of the candidate selected based on RSRP
Just.Therefore, the present invention is not on the basis of feedback overhead is increased so that the selection of cooperation transmitting point set is more accurate, improves
The performance that coordinate multipoint data are sent.
Wherein, step S204 includes：The channel condition information that service transmission point feeds back according to receiving point, gives receiving point configuration
Channel condition information measurement transmitting point set；Service transmission point calculates channel condition information measurement transmitting point set and the association of candidate
Make launch point intersection of sets collection；Service transmission point selects the cooperation for sending data to launch point set among above-mentioned common factor.
In order to preferably support CoMP, the scene especially launched in descending joint, it is necessary to which UE feeds back necessary channel to cooperation launch point
Status information, such as pre-coding matrix instruction (Precoding Matrix Index, referred to as PMI), CQI, order instruction (Rank
Index, referred to as RI) etc..So in this preferred embodiment, calculating channel condition information measurement transmitting point set and the association of candidate
Make launch point intersection of sets collection, and select the cooperation for sending data to launch point set among above-mentioned common factor, thus can
Ensure select be used for send data cooperation transmitting point set be UE can to its feeding back channel state information launch point.
Service transmission point selects the cooperation for sending data to launch point set real by the following method among common factor
It is existing：Service transmission point is among common factor, and selection meets formula CQIsrv-CQIco≤ Thresh cooperation launch point is constituted for sending out
The cooperation of data is sent to launch point set, wherein, CQIsrvRepresent service transmission point to the CQI value of receiving point, CQIcoRepresent cooperation hair
Exit point is to the CQI value of receiving point, 3≤Thresh≤4.In this preferred embodiment, in channel condition information measurement transmitting point set
Concentrated with the launch point intersection of sets that cooperates of candidate, the cooperation launch point of formula is met using the short CQI value selection of measurement period
Constitute the cooperation for sending data and launch point set, thus further ensure the accuracy of cooperation transmitting point selection.
After the cooperation transmitting point set for sending data is selected, there is the following two kinds situation to need to selected cooperation
Transmitting point set delete/add, and is introduced in detail below.
(1) UE position is not moved, and CQI measurement period is short, has carried out the measurement of new channel condition information, institute
Cooperation launch point CQI value in the cooperation transmitting point set of choosing may change；But RSRP measurement period is longer, so
RSRP values do not update.
Under these conditions, service transmission point determines that one or more of point set is launched in the cooperation for sending data
Cooperation launch point is unsatisfactory for formula；Service transmission point excludes one or more in point set is launched in the cooperation for sending data
Cooperate launch point.
(2) UE position is moved, and CQI measurement period is short, has carried out the measurement of new channel condition information, selected
Cooperation transmitting point set in cooperation launch point CQI value may change；But RSRP measurement period is longer, so RSRP
Value does not update.
Under these conditions, service transmission point determines that one or more of common factor cooperation launch point meets formula；Service
Launch point increases one or more cooperation launch points in point set is launched in the cooperation for sending data.
In above-mentioned two situations, later CQI value is changed according to cooperation launch point, to the association for being used to send data selected
Make transmitting point set to be upgraded in time, further ensure the accuracy of cooperation transmitting point selection.
Step S202 is realized by following steps：Selection meets formulaCooperation transmitting
The cooperation transmitting point set of point composition candidate, wherein, RSRPsrvRepresent the RSRP values of service transmission point, RSRPcoRepresent cooperation hair
The RSRP values of exit point, 0≤Thresh 1≤10.Meet the RSRP that above-mentioned formula is meant that service transmission point and the launch point that cooperates
Ratio is less than threshold value, and the threshold value is generally 10dB.
Above-mentioned channel condition information refers to channel condition information measurement transmitting point set to the channel quality letter between receiving point
Breath, channel condition information measurement transmitting point set is that have the high-rise measuring reference signals configured to determine.
The implementation process of the embodiment of the present invention is described in detail below in conjunction with example and accompanying drawing.
Preferred embodiment one
Fig. 3 is that, according to the RSRP of the preferred embodiment of the present invention one measurements and measuring assembly schematic diagram, Fig. 3 contains a shifting
The part of dynamic communication network, including 7 transmitting terminal Cell 0, Cell 1, Cell 2, Cell 3, Cell 4, Cell 5, Cell
6.During receiving terminal is mobile terminal UE, this preferred embodiment, only illustrated with exemplified by a UE 0, UE 0 service transmission end is
Cell 0。
UE 0 RSRP measuring assemblies can be configured or specified by high-level signaling, as shown in figure 3, in this preferred embodiment
Specify RSRP measuring assemblies be：[Cell 0, Cell 1, Cell 2, Cell 3, Cell 6], corresponding RSRP is obtained through measurement
Measured value, respectively RSRP 0, RSRP 1, RSRP 2, RSRP 3, RSRP 6.
For the function in the data transfers such as link circuit self-adapting, physical layer will also specify the measurement of channel condition information for UE
Set.Fig. 4 is according to the CQI of the preferred embodiment of the present invention one measurements and measuring assembly schematic diagram, as shown in figure 4, this is preferred real
Applying the CQI measuring assemblies specified in example is：[Cell 0, Cell 1, Cell 2, Cell 6], obtains corresponding CQI through measurement and surveys
Value, respectively CQI 0, CQI 1, CQI 2, CQI 6.
Because the purpose of RSRP measurements is not only data transfer, in addition to transmitting terminal is reselected, i.e. the work(such as switching
Energy.So, set and the CQI set measured of usual RSRP measurements may be different.
Fig. 5 is the CoMP set schematic diagram according to the preferred embodiment of the present invention one.In order to preferably support CoMP, especially exist
The scene of descending joint transmitting is, it is necessary to which UE feeds back necessary channel condition information, such as PMI, CQI, RI etc. to cooperation launch point.
So, common candidate cooperation transmitting point set be UE can to its feeding back channel state information launch point.
The RSRP measured values of the subset of the specified RSRP measuring assemblies of high level, see whether meet formula
In the preferred embodiment, as shown in figure 5, according to service transmission point Cell 0 RSRP measured values RSRP 0 and other launch points
RSRP measured values RSRP 1, whether meet following formula between RSRP 2 and RSRP 6：Generally
Thresh1=10dB.
It is computed, the cooperation transmitting point set for meeting condition is：[Cell 1, Cell 2, Cell 6].
So the cooperation transmitting point set of candidate is：[Cell 1, Cell 2, Cell 6].
Further, the cooperation transmitting point set measured according to UE 0 channel condition information to above-mentioned candidate is adjusted
Whole, step is as follows：
UE 0 is respectively to Cell 0, Cell 1, Cell 2, Cell 6 CQI measured values：CQI 0, CQI 1, CQI 2,
CQI 6。
Usual CQI is represented by modulation coding mode (Modulation Coding Scheme, MCS), and MCS is modulation methods
The combination of formula and different code checks, the modulation system that general mobile communication is supported is QPSK (Quadrature
PhaseShift Keying, referred to as QPSK), quadrature amplitude modulation (Quadrature Amplitude Modulation, letter
Referred to as QAM), wherein, QAM includes 16QAM and 64QAM, and typical code check then has 1/2,2/3,3/4,5/6 etc., do not arranged one by one here
Lift.Finally, CQI is represented by MCS indexes, for example, raised by modulation system, and will with the elevated order of code check under modulation system
Available combination index of reference represents, MCS1 to MCS16 totally 16 kinds of MCS.
CQI is unsatisfactory in the cooperation transmitting point set of above-mentioned candidatesrv-CQIco≤ Thresh2 cooperation launch point, will
Moved from the set, wherein 3≤Thresh 2≤4.Concrete operations are relevant with CoMP algorithm and MCS configurations, but basic principle
It is to ensure that service transmission point does not exceed 10dB with the signal to noise ratio that the launch point that cooperates correctly is demodulated.
In this preferred embodiment, CQI 0 is MCS2, represents 16QAM, 1/2 code check, and CQI 6 is then QPSK, 1/2 code check,
So it is contemplated that not cooperated with Cell 6.
So, in this preferred embodiment, service transmission point Cell 0 and cooperation launch point Cell1, Cell2 pass through CoMP side
Formula is that UE 0 is serviced.
Preferred embodiment two
Fig. 6 is the CoMP set schematic diagram according to the preferred embodiment of the present invention two, as shown in fig. 6, in this preferred embodiment,
UE 0 is not moved, because CQI measurement period is short, and UE 0 has carried out new channel condition information measurement, the CQI value of launch point
It may change.
In this preferred embodiment, because surrounding environment changes, now Cell 2 declines than larger soon, causes channel matter
Amount declines, and the Cell 2 newly measured CQI value is simultaneously unsatisfactory for formula：CQIsrv-CQIco≤ Thresh2, so in preferred embodiment
Cell 2 is excluded in the cooperation transmitting point set finally determined in one, obtaining new cooperation transmitting point set is：[Cell 1].
So, in this preferred embodiment, service transmission point Cell 0 and cooperation launch point Cell 1 are by CoMP modes
UE 0 is serviced.
Preferred embodiment three
This preferred embodiment is that, based on preferred embodiment two, Fig. 7 is the CoMP collection according to the preferred embodiment of the present invention three
Schematic diagram is closed, as shown in fig. 7, UE 0 there occurs movement, a new position is moved to, causes decline to change, but now
RSRP measured value is not updated, and because CQI measurement period is shorter, CQI value is updated.
The scripts of Cell 6 also measure collection in the cooperation transmitting point set of UE 0 candidate in UE 0 channel condition information
In closing, in this preferred embodiment, the Cell 6 newly measured CQI value meets formula：CQIsrv-CQIco≤ Thresh2, so
Cell 6 is added in the cooperation transmitting point set determined in preferred embodiment two, obtaining new cooperation transmitting point set is：[Cell
1, Cell6].
So, in this preferred embodiment, service transmission point Cell 0 and cooperation launch point Cell1, Cell6 pass through CoMP side
Formula is that UE 0 is serviced.
Preferred embodiment four
Fig. 8 is RSRP the and CQI instrumentation plans according to the preferred embodiment of the present invention four, as shown in figure 8, high-rise configuration
Cell 0 and Cell 1 RSRP one-shot measurement are based on preceding 6 resource units, and are judged according to RSRP, and Cell 1 is
Cooperate launch point, but according to UE CQI feedback, its service transmission point Cell 0 is its distribution or intends distribution other resource list
Member, from the point of view of CQI 0 and CQI 1, if CQI 0 and the difference of CQI 1 are excessive, Cell 1 is not suitable as cooperation transmitting
Point, main reason is that RSRP measurement resources may be different from CQI measurement resources, and frequency selectivity is likely to result in different frequency bands
On resource channel quality difference it is larger.
It should be noted that the transmitting terminal (launch point) in the present invention can be that base station, Home eNodeB, relay station etc. are set
Standby or communication terminal, notebook computer, HPC etc..Similarly, receiving terminal (receiving point) is used for receiving end/sending end
Data-signal, can be the terminal devices such as mobile phone, notebook computer, HPC or base station, the control such as relay station
Equipment.
It should be noted that can be in such as one group computer executable instructions the step of the flow of accompanying drawing is illustrated
Performed in computer system, and, although logical order is shown in flow charts, but in some cases, can be with not
The order being same as herein performs shown or described step.
The embodiments of the invention provide a kind of data sending device, the data sending device can be used for realizing above-mentioned data
Sending method.Fig. 9 is the structured flowchart of data sending device according to embodiments of the present invention, as shown in figure 9, including determining module
91st, selecting module 92 and sending module 93.This structure is described in detail below.
Determining module 91, the RSRP information reported for service transmission point according to receiving point determines the cooperation transmitting of candidate
Point set；Selecting module 92, is connected to determining module 91, and the channel status fed back for service transmission point according to receiving point is believed
Breath, selects the cooperation for sending data to launch point set among the cooperation transmitting point set for the candidate that determining module 91 is determined
Close；Sending module 93, is connected to selecting module 92, for service transmission point with the selection of selecting module 92 for sending data
Cooperation launch point in cooperation transmitting point set sends data by cooperation mode to receiving point.
Figure 10 is the structured flowchart of the data sending device according to the preferred embodiment of the present invention one, as shown in Figure 10, selection
Module 92 includes：Configure submodule 922, the channel condition information fed back for service transmission point according to receiving point, to receiving point
Configurating channel status information measurement transmitting point set；Calculating sub module 924, is connected to configuration submodule 922, for service transmission
Point calculates the channel condition information measurement transmitting point set of the configuration configuration of submodule 922 and the launch point intersection of sets that cooperates of candidate
Collection；Submodule 926 is selected, calculating sub module 924 is connected to, the common factor calculated for service transmission point in calculating sub module 924
Among, select the cooperation for sending data to launch point set.
Preferably, selection submodule 926 includes：Selecting unit 9262, for service transmission point among common factor, selection is full
Sufficient formula CQIsrv-CQIcoPoint set is launched in the cooperation that≤Thresh cooperation launch point constitutes for sending data, wherein,
CQIsrvRepresent service transmission point to the CQI value of receiving point, CQIcoRepresent cooperation launch point to receiving point CQI value, 3≤
Thresh≤4。
Figure 11 is the structured flowchart of the data sending device according to the preferred embodiment of the present invention two, as shown in figure 11, above-mentioned
Device also includes：Processing module 94, is connected to selecting module 92, and the one of formula will be unsatisfactory in common factor for service transmission point
Individual or multiple cooperation launch points are excluded, and form amendment cooperation transmitting point set.
It should be noted that the data sending device described in device embodiment corresponds to above-mentioned embodiment of the method, its
Concrete implementation process had carried out detailed description in embodiment of the method, will not be repeated here.
In summary, there is provided a kind of data transmission method for uplink and device according to the abovementioned embodiments of the present invention.The present invention exists
On the basis of not increasing feedback overhead so that the selection of cooperation transmitting point set is more accurate, improves coordinate multipoint data hair
The performance sent.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored
Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they
In multiple modules or step single integrated circuit module is fabricated to realize.So, the present invention is not restricted to any specific
Hardware and software is combined.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of data transmission method for uplink, it is characterised in that including：
The RSRP information that service transmission point is reported according to receiving point, determines the cooperation transmitting point set of candidate；
The channel condition information that the service transmission point feeds back according to the receiving point, point set is launched in the cooperation of the candidate
Among select for send data cooperation launch point set；
The service transmission point with it is described be used for send data cooperate launch point set in cooperation launch point pass through cooperation part
Formula sends data to the receiving point；
Wherein, the RSRP information that service transmission point is reported according to receiving point, determining the cooperation transmitting point set of candidate includes：Selection
Meet formulaCooperation launch point constitute the cooperation transmitting point set of the candidate, wherein,
RSRPsrvRepresent the RSRP values of the service transmission point, RSRPcoThe RSRP values of the expression cooperation launch point, 0≤Thresh1≤
10。
2. according to the method described in claim 1, it is characterised in that the letter that the service transmission point feeds back according to the receiving point
Channel state information, selecting the cooperation for sending data to launch point set among the cooperation launch point of the candidate includes：
The channel condition information that the service transmission point feeds back according to the receiving point, gives receiving point configurating channel state letter
Breath measurement transmitting point set；
The service transmission point calculates the transmitting point set that cooperates of the channel condition information measurement transmitting point set and the candidate
The common factor of conjunction；
The service transmission point is among the common factor, the selection cooperation transmitting point set for being used to send data.
3. method according to claim 2, it is characterised in that the service transmission point selects institute among the common factor
Stating the cooperation transmitting point set for sending data includes：
The service transmission point is among the common factor, and selection meets formula CQIsrv-CQIco≤ Thresh cooperation launch point group
Launch point set into the cooperation for being used to send data, wherein, CQIsrvRepresent the service transmission point to the receiving point
CQI value, CQIcoRepresent the cooperation launch point to the CQI value of the receiving point, 3≤Thresh≤4.
4. method according to claim 3, it is characterised in that fed back in the service transmission point according to the receiving point
Channel condition information, selects the cooperation for being used to send data to launch point set among the cooperation transmitting point set of the candidate
After conjunction, in addition to：
The service transmission point excludes the one or more cooperation launch points for being unsatisfactory for the formula in the common factor, is formed
Amendment cooperation transmitting point set.
5. method according to claim 4, it is characterised in that fed back in the service transmission point according to the receiving point
Channel condition information, selects the cooperation for being used to send data to launch point set among the cooperation transmitting point set of the candidate
After conjunction, in addition to：Cooperation launch point in the service transmission point and amendment cooperation transmitting point set is given by cooperation mode
The receiving point sends data.
6. a kind of data sending device, it is characterised in that including：
Determining module, the RSRP information reported for service transmission point according to receiving point determines the cooperation transmitting point set of candidate；
Selecting module, the channel condition information fed back for the service transmission point according to the receiving point, the candidate's
The cooperation for sending data is selected to launch point set among cooperation transmitting point set；
Sending module, is used to send the cooperation transmitting in the transmitting point set that cooperates of data for the service transmission point with described
Point sends data by cooperation mode to the receiving point；
Wherein, the determining module is additionally operable to selection and meets formulaCooperation launch point composition
The cooperation transmitting point set of the candidate, wherein, RSRPsrvRepresent the RSRP values of the service transmission point, RSRPcoRepresent described
The RSRP values of cooperation launch point, 0≤Thresh1≤10.
7. device according to claim 6, it is characterised in that the selecting module includes：
Submodule is configured, the channel condition information fed back for the service transmission point according to the receiving point is received to described
Point configurating channel status information measurement transmitting point set；
Calculating sub module, the channel condition information measurement transmitting point set and the candidate are calculated for the service transmission point
Cooperation launch point intersection of sets collection；
Submodule is selected, for the service transmission point among the common factor, the selection cooperation hair for being used to send data
Exit point set.
8. device according to claim 7, it is characterised in that the selection submodule includes：
Selecting unit, for the service transmission point among the common factor, selection meets formula CQIsrv-CQIco≤Thresh
The cooperation launch point composition cooperation transmitting point set for being used to send data, wherein, CQIsrvRepresent the service transmission point
To the CQI value of the receiving point, CQIcoRepresent the cooperation launch point to the CQI value of the receiving point, 3≤Thresh≤4.
9. device according to claim 8, it is characterised in that described device also includes：
Processing module, sends out the one or more cooperations for being unsatisfactory for the formula in the common factor for the service transmission point
Exit point is excluded, and forms amendment cooperation transmitting point set.
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| CN101594644A (en) * | 2009-07-02 | 2009-12-02 | 西安电子科技大学 | Support the signaling interaction method that the CoMP operational set is selected |
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| CN102118863A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Methods and devices for feeding back channel state information and determining multi-point cooperation mode |
| WO2011100676A1 (en) * | 2010-02-12 | 2011-08-18 | Research In Motion Limited | Reference signal for a coordinated multi-point network implementation |
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Patent Citations (4)
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|---|---|---|---|---|
| CN101594644A (en) * | 2009-07-02 | 2009-12-02 | 西安电子科技大学 | Support the signaling interaction method that the CoMP operational set is selected |
| CN102118863A (en) * | 2009-12-31 | 2011-07-06 | 华为技术有限公司 | Methods and devices for feeding back channel state information and determining multi-point cooperation mode |
| WO2011100676A1 (en) * | 2010-02-12 | 2011-08-18 | Research In Motion Limited | Reference signal for a coordinated multi-point network implementation |
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