CN103138902A - Method and device for sending data - Google Patents
Method and device for sending data Download PDFInfo
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- CN103138902A CN103138902A CN2011103779748A CN201110377974A CN103138902A CN 103138902 A CN103138902 A CN 103138902A CN 2011103779748 A CN2011103779748 A CN 2011103779748A CN 201110377974 A CN201110377974 A CN 201110377974A CN 103138902 A CN103138902 A CN 103138902A
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Abstract
The invention discloses a method and a device for sending data. The method includes that a service launching point determines a candidate cooperative launching point set according to reference signal received power (RSRP) reported by a receiving point; the service launching point selects cooperative launching points for sending data from the candidate cooperative launching point set according to channel state information fed back by the receiving point; and the service launching point and the cooperative launching points for sending the data in the cooperative launching point set send data in a cooperative mode. According to the method and the device, the selection of the cooperative launching point set is accurate without adding feedback expenditures, and cooperative multipoint data sending performances are improved.
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
Along with the fast development of wireless communication technology, the frequency spectrum resource of wretched insufficiency becomes the principal element of restriction Development of Wireless Communications gradually, how to take full advantage of limited frequency spectrum resource, and improving the availability of frequency spectrum is the great difficult problem of radio communication.Multiple-input and multiple-output (Multiple-Input Multiple-Output is referred to as MIMO) technology can be in the situation that do not increase that bandwidth improves efficiency of transmission and the availability of frequency spectrum obtains extensive favor because of it.The MIMO technology has been utilized space diversity gain by transmitting and receiving diversity, has utilized antenna array gain by beam forming technique, has utilized the spatial reuse gain by space multiplexing technique.Particularly, obtain the weak dependence that diversity gain utilizes space channel, and the selectivity on binding time/frequency, transmit diversity provides more copy for the transmission of signal, receive diversity is to have received a plurality of copies that transmit in the space, and then improve the reliability of signal transmission, thereby improve the signal to noise ratio that receives signal, for example space-frequency block codes (Space Frequency Block Code); Obtain array gain and utilize the strong correlation of space channel, by little spacing aerial array is installed, thereby make the electromagnetic wave that transmits in the space produce and interfere the antenna pattern that forms highly directive, make the main lobe of antenna pattern point to adaptively arrival bearing user, thereby raising signal to noise ratio, improve power system capacity or coverage, for example single current beam forming (Single StreamBeamforming); Obtaining the spatial reuse gain is also the weak dependence that utilizes space channel, transmit different data flow on a plurality of separate space channels, thereby improve the peak rate of transfer of data, multiuser MIMO (Mutiple UserMultiple-Input Multiple-Output for example, referred to as MU-MIMO) can send data for a plurality of users simultaneously on same resource block (Resource Block is referred to as RB).
In LTE Release 8/9, defined public reference signal (Common Reference Signal is referred to as CRS).Subscriber equipment (User Equipment is referred to as UE) can carry out channel measurement by CRS, provides basic reference information for UE and Cell (enhancedNode Base station) select different MIMO transmission mode and scheduling of resource.The supported transmission mode of LTERelease 8/9 comprises diversity, open loop Single User MIMO (Single User MIMO is referred to as SU-MIMO), closed loop Single User MIMO and closed loop MU-MIMO.
In LTE Release 10, defined new reference signal: channel information reference signal (Channel StateInformation-Reference Signal is referred to as CSI-RS) is exclusively used in channel measurement.UE can measure and calculate pre-coding matrix index (Precoding Matrix Indicator to base station feedback by CSI-RS, referred to as PMl), channel quality information indication (Channel Quality Indicator, referred to as CQI) and order indication information such as (Rank Indicator are referred to as RI).CSI-RS provides possibility for further improving cell spectrum utilance, especially the cell edge availability of frequency spectrum, because CSI-RS is coordinate multipoint (Cooperative Multi-Point, referred to as CoMP) application of technology provides may, the CoMP technology makes the MIMO technology no longer be confined to single residential quarter, but but multi-plot joint is processed and coordination, as shown in Figure 1.Descending CoMP technology mainly comprises following two kinds of forms:
(1) cooperative scheduling/cooperative beam figuration (Coordinated Scheduling/Coordinated Beamforming is referred to as CS/CB): data are only from the Serving cell emission, but UE scheduling or BF mode are jointly to be completed by cooperation point.
(2) unite emission (Joint Transmission is referred to as JT): data are by each cooperation point Combined Treatment, and namely the data of each UE are united emission by all cooperation points, to improve the quality of reception, eliminate and disturb.
CS/CB or JT face a matter of utmost importance: the selection problem of cooperation cell set.At present, the selection principle of cooperation cell set is all to select according to RSRP (Reference Signal Receiving Power) parameter.RSRP is in Measurement bandwidth, and the linear average of the signal power (W of unit) that receives on the subcarrier of carrying CRS is generally got CRS R0, i.e. reference signal on port 0.The cooperation cell set: { the RSRP ratio of service Cell and the Cell that cooperates is less than thresholding }, that is:
RSRP wherein
srvThe RSRP value of expression service Cell, RSRP
coThe RSRP value of expression cooperation Cell.
But the measuring period of RSRP is larger, generally on the rank of the RSRP measuring period of physical layer at 100ms, and the frequency of utilization of cooperation cell set generally has 1000 times/second interior, and obviously cooperation cell set renewal is slow, affects the correctness of the selection of cooperation cell set.
Summary of the invention
In correlation technique, the selection of cooperation launch point set is based on RSRP, because the measuring period of RSRP is large, the launch point set that causes cooperating is upgraded slower, thereby the problem of the correctness of impact cooperation launch point Resource selection and propose the present invention, for this reason, the invention provides a kind of data transmission method for uplink and device, to address the above problem at least.
According to an aspect of the present invention, provide a kind of data transmission method for uplink, having comprised: the service launch point is determined candidate's cooperation launch point set according to the RSRP information that acceptance point reports; The service launch point selects to be used for sending the cooperation launch point set of data according to the channel condition information of acceptance point feedback among candidate's cooperation launch point set; The service launch point sends data by cooperation mode to acceptance point with the cooperation launch point of the launch point set that cooperates that is used for the transmission data.
Preferably, the service launch point is according to the channel condition information of acceptance point feedback, the cooperation launch point set of selecting to be used for the transmission data among candidate's cooperation launch point comprises: the service launch point measures the launch point set for acceptance point configurating channel state information according to the channel condition information of acceptance point feedback; The service launch point calculates the launch point intersection of sets collection that cooperates that channel condition information is measured launch point set and candidate; The service launch point selects to be used for sending the cooperation launch point set of data among occuring simultaneously.
Preferably, the service launch point is among occuring simultaneously, and the cooperation launch point set of selecting to be used for the transmission data comprises: the service launch point selects to satisfy formula CQI among occuring simultaneously
srv-CQI
coThe cooperation launch point of≤Thresh forms the cooperation launch point set that is used for sending data, wherein, and CQI
srvExpression service launch point is to the CQI value of acceptance point, CQI
coExpression cooperation launch point is to the CQI value of acceptance point, 3≤Thresh≤4.
Preferably, at the channel condition information of service launch point according to the acceptance point feedback, after selecting to be used for sending the cooperation launch point set of data among candidate's cooperation launch point set, said method also comprises: the service launch point will not satisfy one or more cooperation launch points of formula in common factor gets rid of, and forms and revises the set of cooperation launch point.
Preferably, at the channel condition information of service launch point according to the acceptance point feedback, after selecting to be used for sending the cooperation launch point set of data among candidate's cooperation launch point set, also comprise: service launch point and the cooperation launch point of revising in the set of cooperation launch point send data by cooperation mode to acceptance point.
Preferably, the service launch point determines that according to the RSRP information that acceptance point reports candidate's cooperation launch point set comprises: select to satisfy formula
The cooperation launch point form candidate's cooperation launch point set, wherein, RSRP
srvThe RSRP value of expression service launch point, RSRP
coThe RSRP value of expression cooperation launch point, 0≤Thresh 1≤10.
According to a further aspect in the invention, provide a kind of data sending device, having comprised: determination module, be used for the service launch point according to the RSRP information that acceptance point reports, determine candidate's cooperation launch point set; Select module, be used for the service launch point according to the channel condition information of acceptance point feedback, select to be used for sending the cooperation launch point set of data among candidate's cooperation launch point set; Sending module is used for the service launch point and sends data by cooperation mode to acceptance point with the cooperation launch point of the launch point set that cooperates that is used for the transmission data.
Preferably, select module to comprise: the configuration submodule, be used for the service launch point according to the channel condition information of acceptance point feedback, measure the launch point set for acceptance point configurating channel state information; Calculating sub module is for the cooperate launch point intersection of sets collection of service launch point calculating channel condition information measurement launch point set with the candidate; The chooser module is used for the service launch point among occuring simultaneously, and selects to be used for sending the cooperation launch point set of data.
Preferably, the chooser module comprises: selected cell, be used for the service launch point among occuring simultaneously, and select to satisfy formula CQI
srv-CQI
coThe cooperation launch point of≤Thresh forms the cooperation launch point set that is used for sending data, wherein, and CQI
srvExpression service launch point is to the CQI value of acceptance point, CQI
coExpression cooperation launch point is to the CQI value of acceptance point, 3≤Thresh≤4.
Preferably, said apparatus also comprises: processing module, and be used for the service launch point and get rid of at one or more cooperation launch points that common factor will not satisfy formula, form and revise the set of cooperation launch point.
The present invention utilizes the channel condition information of acceptance point feedback, revises further in the candidate's who selects based on RSRP cooperation launch point set.Therefore, the present invention makes the selection of cooperation launch point set more accurate on the basis that does not increase feedback overhead, has improved the performance that the coordinate multipoint data send.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the CoMP schematic diagram according to correlation technique;
Fig. 2 is the flow chart according to the data transmission method for uplink of the embodiment of the present invention;
Fig. 3 is RSRP measurement and the measuring assembly schematic diagram according to the preferred embodiment of the present invention one;
Fig. 4 is CQI measurement and the measuring assembly schematic diagram according to the preferred embodiment of the present invention one;
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 according to the RSRP of the preferred embodiment of the present invention four and CQI instrumentation plan;
Fig. 9 is the structured flowchart according to the data sending device of the embodiment of the present invention;
Figure 10 is the structured flowchart according to the data sending device of the preferred embodiment of the present invention one;
Figure 11 is the structured flowchart according to the data sending device of the preferred embodiment of the present invention two.
Embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The invention provides a kind of data transmission method for uplink, Fig. 2 is the flow chart according to the data transmission method for uplink of the embodiment of the present invention, as shown in Figure 2, comprises that following step S202 is to step S206.
Step S202, the service launch point is determined candidate's cooperation launch point set according to the RSRP information that acceptance point reports;
Step S204, the service launch point selects to be used for sending the cooperation launch point set of data according to the channel condition information of acceptance point feedback among candidate's cooperation launch point set;
Step S206, the service launch point sends data by cooperation mode to acceptance point with the cooperation launch point of the launch point set that cooperates that is used for the transmission data.
In correlation technique, the selection of cooperation launch point set is based on RSRP, and because the measuring period of RSRP is large, the launch point set that causes cooperating is upgraded slower, thus the correctness of impact cooperation launch point Resource selection.In the embodiment of the present invention, utilize the channel condition information of acceptance point feedback, revise further in the candidate's who selects based on RSRP cooperation launch point set.Therefore, the present invention makes the selection of cooperation launch point set more accurate on the basis that does not increase feedback overhead, has improved the performance that the coordinate multipoint data send.
Wherein, step S204 comprises: the service launch point measures the launch point set for acceptance point configurating channel state information according to the channel condition information of acceptance point feedback; The service launch point calculates the launch point intersection of sets collection that cooperates that channel condition information is measured launch point set and candidate; The service launch point selects to be used for sending the cooperation launch point set of data among above-mentioned common factor.In order to support better CoMP, especially in descending scene of uniting emission, need UE to the necessary channel condition information of cooperation launch point feedback, for example pre-coding matrix is indicated (Precoding Matrix Index, referred to as PMI), CQI, order indication (Rank Index is referred to as RI) etc.So in this preferred embodiment, calculate channel condition information and measure launch point set and candidate's the launch point intersection of sets collection that cooperates, and select among above-mentioned common factor for the cooperation launch point set that sends data, so just can guarantee that the cooperation launch point set for sending data of selecting is that UE can be to the launch point of its feeding back channel state information.
The service launch point is among occuring simultaneously, and the cooperation launch point set of selecting to be used for the transmission data realizes by the following method: the service launch point selects to satisfy formula CQI among occuring simultaneously
srv-CQI
coThe cooperation launch point of≤Thresh forms the cooperation launch point set that is used for sending data, wherein, and CQI
srvExpression service launch point is to the CQI value of acceptance point, CQI
coExpression cooperation launch point is to the CQI value of acceptance point, 3≤Thresh≤4.In this preferred embodiment, measuring the launch point set at channel condition information concentrates with candidate's the launch point intersection of sets that cooperates, utilize the cooperation launch point that measuring period, short CQI value was selected to satisfy formula to form the cooperation launch point set that is used for sending data, so just further guaranteed the accuracy that the cooperation launch point is selected.
After selecting for the cooperation launch point set that sends data, there are following two kinds of situations to delete/to add the set of selected cooperation launch point, the below describes in detail.
(1) position of UE is not moved, and the measuring period of CQI is short, has carried out the measurement of new channel condition information, and the cooperation launch point CQI value in the set of selected cooperation launch point may change; But the measuring period of RSRP is longer, so the RSRP value is not upgraded.
Under these conditions, service launch point one or more cooperation launch points of being identified for sending in the cooperation launch point set of data do not satisfy formula; The service launch point is at the one or more cooperation launch points of cooperation launch point set eliminating that are used for sending data.
(2) position of UE is moved, and the measuring period of CQI is short, has carried out the measurement of new channel condition information, and the cooperation launch point CQI value in the set of selected cooperation launch point may change; But the measuring period of RSRP is longer, so the RSRP value is not upgraded.
Under these conditions, the one or more cooperation launch points during the service launch point is determined to occur simultaneously satisfy formula; The service launch point increases one or more cooperation launch points in the cooperation launch point set that is used for the transmission data.
In above-mentioned two situations, change later CQI value according to the cooperation launch point, the cooperation launch point set that is used for the transmission data of having selected is upgraded in time, further guaranteed the accuracy that the cooperation launch point is selected.
Step S202 realizes by following steps: select to satisfy formula
The cooperation launch point form candidate's cooperation launch point set, wherein, RSRP
srvThe RSRP value of expression service launch point, RSRP
coThe RSRP value of expression cooperation launch point, 0≤Thresh 1≤10.The implication that satisfies above-mentioned formula be the RSRP ratio of service launch point and the launch point that cooperates less than threshold value, this threshold value is generally 10dB.
Above-mentioned channel condition information refers to the set of channel condition information measurement launch point to the channel quality information between acceptance point, and it is to have the measuring reference signals of high-rise configuration to determine that channel condition information is measured the launch point set.
Be described in detail below in conjunction with example and the accompanying drawing implementation procedure to the embodiment of the present invention.
Preferred embodiment one
Fig. 3 is RSRP measurement and the measuring assembly schematic diagram according to the preferred embodiment of the present invention one, and Fig. 3 has comprised the part of a mobile communications network, comprises 7 transmitting terminal Cell 0, Cell 1, Cell 2, Cell 3, Cell 4, Cell 5, Cell 6.Receiving terminal is mobile terminal UE, in this preferred embodiment, only is the example explanation with a UE 0, and the service transmitting terminal of UE 0 is Cell 0.
Can configure or specify the RSRP measuring assembly of UE 0 by high-level signaling, as shown in Figure 3, specify the RSRP measuring assembly to be in this preferred embodiment: [Cell 0, Cell 1, Cell 2, and Cell 3, and Cell 6], through measuring corresponding RSRP measured value, be respectively RSRP 0, RSRP 1, and RSRP 2, RSRP 3, and RSRP 6.
For the function in the transfer of data such as link circuit self-adapting, physical layer also will be the measuring assembly of UE allocated channel state information.Fig. 4 is CQI measurement and the measuring assembly schematic diagram according to the preferred embodiment of the present invention one, as shown in Figure 4, the CQI measuring assembly of appointment in this preferred embodiment is: [Cell 0, and Cell 1, and Cell 2, Cell 6], through measuring corresponding CQI measured value, be respectively CQI 0, CQI 1, CQI 2, and CQI 6.
Because the purpose that RSRP measures is not only transfer of data, also comprise reselecting of transmitting terminal, i.e. the functions such as switching.So the set of RSRP measurement may be different from the set of CQI measurement usually.
Fig. 5 is the CoMP set schematic diagram according to the preferred embodiment of the present invention one.In order to support better CoMP, especially in descending scene of uniting emission, need UE to the necessary channel condition information of cooperation launch point feedback, PMI for example, CQI, RI etc.So common candidate's cooperation launch point set is that UE can be to the launch point of its feeding back channel state information.
High-rise RSRP measured value of specifying the subset of RSRP measuring assembly sees whether satisfy formula
In this preferred embodiment, as shown in Figure 5, according to the RSRP measured value RSRP 0 of service launch point Cell 0 and the RSRP measured value RSRP 1 of other launch point, whether satisfy following formula between RSRP 2 and RSRP 6:
Common Thresh1=10dB.
As calculated, the cooperation launch point set that satisfies condition is: [Cell 1, and Cell 2, and Cell 6].
So candidate's cooperation launch point set is: [Cell 1, and Cell 2, and Cell 6].
Further, measure according to the channel condition information of UE 0 above-mentioned candidate's cooperation launch point set is adjusted, step is as follows:
0 couple of Cell 0 of UE, Cell 1, and Cell 2, and the CQI measured value of Cell 6 is respectively: CQI 0, and CQI 1, and CQI 2, and CQI 6.
Usually CQI is by modulation coding mode (Modulation Coding Scheme, MCS) expression, and MCS is the combination of modulation system and different code checks, the modulation system of general mobile communication support is Quadrature Phase Shift Keying (Quadrature PhaseShift Keying, referred to as QPSK), quadrature amplitude modulation (Quadrature Amplitude Modulation, referred to as QAM), wherein, QAM comprises 16QAM and 64QAM, typical case's code check has 1/2,2/3,3/4,5/6 etc., do not enumerate here.Finally, represent CQI by the MCS index, for example, raise by modulation system, and with the order of code check rising under the modulation mode, available combination index of reference is represented, MCS1 to MCS16 is totally 16 kinds of MCS.
Do not satisfy CQI in above-mentioned candidate's cooperation launch point set
srv-CQI
coThe cooperation launch point of≤Thresh2 will move from this set, and wherein 3≤Thresh 2≤4.Concrete operations are relevant with the MCS configuration with the algorithm of CoMP, but basic principle is to guarantee to serve launch point not surpass 10dB with the signal to noise ratio of the correct demodulation of launch point that cooperates.
In this preferred embodiment, CQI 0 is MCS2, represents 16QAM, and 1/2 code check, CQI 6 are QPSK, and 1/2 code check is so can consider not cooperate with Cell 6.
So in this preferred embodiment, service launch point Cell 0 and cooperation launch point Cell1, Cell2 are UE 0 service by the CoMP mode.
Preferred embodiment two
Fig. 6 is the CoMP set schematic diagram according to the preferred embodiment of the present invention two, as shown in Figure 6, and in this preferred embodiment, UE 0 does not move, because the measuring period of CQI is short, UE 0 has carried out new channel condition information and has measured, and the CQI value of launch point may change.
In this preferred embodiment, because surrounding environment changes, this moment Cell 2 decline soon greatlyr, cause channel quality to descend, the CQI value of the new Cell 2 that measures does not satisfy formula: CQI
srv-CQI
co≤ Thresh2 so get rid of Cell 2 in the final cooperation launch point set of determining in preferred embodiment one, obtains new cooperation launch point set and is: [Cell 1].
So in this preferred embodiment, service launch point Cell 0 and cooperation launch point Cell 1 are UE 0 service by the CoMP mode.
Preferred embodiment three
This preferred embodiment is based on preferred embodiment two, Fig. 7 is the CoMP set schematic diagram according to the preferred embodiment of the present invention three, as shown in Figure 7, movement has occured in UE 0, moved to a reposition, cause decline to change, but the measured value of RSRP has not upgraded at this moment, and because the measuring period of CQI is shorter, the CQI value is upgraded.
So in this preferred embodiment, service launch point Cell 0 and cooperation launch point Cell1, Cell6 are UE 0 service by the CoMP mode.
Preferred embodiment four
Fig. 8 is according to the RSRP of the preferred embodiment of the present invention four and CQI instrumentation plan, as shown in Figure 8, the one-shot measurement of the RSRP of high-rise configuration Cell 0 and Cell 1 is all based on front 6 Resource Units, and judge according to RSRP, Cell 1 is the cooperation launch point, but the CQI feedback according to UE, its service launch point Cell 0 is its distribution or intends distributing the other Resource Unit, according to CQI 0 and CQI 1, if CQI 0 and CQI 1 difference are excessive, Cell 1 is not suitable as the cooperation launch point, it is different from CQI measurement resource possibility that main cause is that RSRP measures resource, and frequency selectivity may cause the channel quality of the resource on different frequency bands to differ larger.
Need to prove, the transmitting terminal in the present invention (launch point) can be the equipment such as base station, Home eNodeB, relay station, can be also communication terminal, notebook computer, Hand Personal Computer etc.Similarly, receiving terminal (acceptance point) is used for the data-signal of receiving end/sending end, can be the terminal equipments such as mobile phone, notebook computer, Hand Personal Computer, can be also the base station, the control appliances such as relay station.
Need to prove, can carry out in the computer system such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
The embodiment of the present invention provides a kind of data sending device, and this data sending device can be used for realizing above-mentioned data transmission method for uplink.Fig. 9 is the structured flowchart according to the data sending device of the embodiment of the present invention, as shown in Figure 9, comprises determination module 91, selects module 92 and sending module 93.The below describes in detail to this structure.
Figure 10 is the structured flowchart according to the data sending device of the preferred embodiment of the present invention one, as shown in figure 10, select module 92 to comprise: configuration submodule 922, be used for the service launch point according to the channel condition information of acceptance point feedback, measure the launch point set for acceptance point configurating channel state information; Calculating sub module 924 is connected to configuration submodule 922, calculates the channel condition information measurement launch point set of configuration submodule 922 configurations and candidate's the launch point intersection of sets collection that cooperates for the service launch point; Chooser module 926 is connected to calculating sub module 924, is used for the service launch point among the common factor that calculating sub module 924 is calculated, and selects to be used for sending the cooperation launch point set of data.
Preferably, chooser module 926 comprises: selected cell 9262, be used for the service launch point among occuring simultaneously, and select to satisfy formula CQI
srv-CQI
coThe cooperation launch point of≤Thresh forms the cooperation launch point set that is used for sending data, wherein, and CQI
srvExpression service launch point is to the CQI value of acceptance point, CQI
coExpression cooperation launch point is to the CQI value of acceptance point, 3≤Thresh≤4.
Figure 11 is the structured flowchart according to the data sending device of the preferred embodiment of the present invention two, as shown in figure 11, said apparatus also comprises: processing module 94, be connected to and select module 92, be used for the service launch point and get rid of at one or more cooperation launch points that common factor will not satisfy formula, form and revise the set of cooperation launch point.
Need to prove, the data sending device of describing in device embodiment is corresponding to above-mentioned embodiment of the method, and its concrete implementation procedure had been carried out detailed description in embodiment of the method, do not repeat them here.
In sum, according to the abovementioned embodiments of the present invention, a kind of data transmission method for uplink and device are provided.The present invention makes the selection of cooperation launch point set more accurate on the basis that does not increase feedback overhead, has improved the performance that the coordinate multipoint data send.
obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step being made into the single integrated circuit module realizes.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. data transmission method for uplink is characterized in that comprising:
The service launch point is determined candidate's cooperation launch point set according to the RSRP information that acceptance point reports;
Described service launch point selects to be used for sending the cooperation launch point set of data according to the channel condition information of described acceptance point feedback among described candidate's cooperation launch point set;
Described service launch point sends data by cooperation mode to described acceptance point with the cooperation launch point of the described launch point set that cooperates for sending data.
2. method according to claim 1, is characterized in that, described service launch point is according to the channel condition information of described acceptance point feedback, and the cooperation launch point set of selecting to be used for the transmission data among described candidate's cooperation launch point comprises:
Described service launch point measures the launch point set for described acceptance point configurating channel state information according to the channel condition information of described acceptance point feedback;
Described service launch point calculates the launch point intersection of sets collection that cooperates that described channel condition information is measured launch point set and described candidate;
Described service launch point is selected described cooperation launch point set for sending data among described common factor.
3. method according to claim 2, is characterized in that, described service launch point selects described cooperation launch point set for sending data to comprise among described common factor:
Described service launch point selects to satisfy formula CQI among described common factor
srv-CQI
coThe cooperation launch point of≤Thresh forms described cooperation launch point set for sending data, wherein, and CQI
srvRepresent that described service launch point is to the CQI value of described acceptance point, CQI
coRepresent that described cooperation launch point is to the CQI value of described acceptance point, 3≤Thresh≤4.
4. method according to claim 3, it is characterized in that, at the channel condition information of described service launch point according to described acceptance point feedback, select described cooperation launch point set for sending data among described candidate's cooperation launch point set after, also comprise:
Described service launch point will not satisfy one or more cooperation launch points of described formula in described common factor gets rid of, and forms to revise the set of cooperation launch point.
5. method according to claim 4, it is characterized in that, at the channel condition information of described service launch point according to described acceptance point feedback, select described cooperation launch point set for sending data among described candidate's cooperation launch point set after, also comprise: described service launch point and the cooperation launch point of revising in the set of cooperation launch point send data by cooperation mode to described acceptance point.
6. the described method of any one according to claim 1 to 5, is characterized in that, the service launch point determines that according to the RSRP information that acceptance point reports candidate's cooperation launch point set comprises: select to satisfy formula
The cooperation launch point form described candidate's cooperation launch point set, wherein, RSRP
srvThe RSRP value that represents described service launch point, RSRP
coRepresent the RSRP value of described cooperation launch point, 0≤Thresh 1≤10.
7. data sending device is characterized in that comprising:
Determination module is used for the service launch point according to the RSRP information that acceptance point reports, and determines candidate's cooperation launch point set;
Select module, be used for described service launch point according to the channel condition information of described acceptance point feedback, select to be used for sending the cooperation launch point set of data among described candidate's cooperation launch point set;
Sending module is used for described service launch point and sends data by cooperation mode to described acceptance point with the cooperation launch point of the described launch point set that cooperates for sending data.
8. device according to claim 7, is characterized in that, described selection module comprises:
The configuration submodule is used for described service launch point according to the channel condition information of described acceptance point feedback, measures the launch point set for described acceptance point configurating channel state information;
Calculating sub module is for the cooperate launch point intersection of sets collection of the described channel condition information measurement of described service launch point calculating launch point set with described candidate;
The chooser module is used for described service launch point among described common factor, selects described cooperation launch point set for sending data.
9. device according to claim 8, is characterized in that, described chooser module comprises:
Selected cell is used for described service launch point among described common factor, selects to satisfy formula CQI
srv-CQI
coThe cooperation launch point of≤Thresh forms described cooperation launch point set for sending data, wherein, and CQI
srvRepresent that described service launch point is to the CQI value of described acceptance point, CQI
coRepresent that described cooperation launch point is to the CQI value of described acceptance point, 3≤Thresh≤4.
10. device according to claim 9, is characterized in that, described device also comprises:
Processing module is used for described service launch point and gets rid of at one or more cooperation launch points that described common factor will not satisfy described formula, forms to revise the set of cooperation launch point.
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| CN201110377974.8A CN103138902B (en) | 2011-11-24 | 2011-11-24 | Data transmission method for uplink and device |
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| CN201110377974.8A CN103138902B (en) | 2011-11-24 | 2011-11-24 | Data transmission method for uplink and device |
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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 |
| CN101998420A (en) * | 2010-11-12 | 2011-03-30 | 北京邮电大学 | Method for setting up coordinated cell set in coordinated multi-point communication |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN101998420A (en) * | 2010-11-12 | 2011-03-30 | 北京邮电大学 | Method for setting up coordinated cell set in coordinated multi-point communication |
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| 3GPP: "《3GPP TR 36.819 V11.0.0》", 《HTTP://WWW.3GPP.ORG》 * |
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