CN105634658A - Transmission processing method, equipment and system - Google Patents
Transmission processing method, equipment and system Download PDFInfo
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- CN105634658A CN105634658A CN201410602805.3A CN201410602805A CN105634658A CN 105634658 A CN105634658 A CN 105634658A CN 201410602805 A CN201410602805 A CN 201410602805A CN 105634658 A CN105634658 A CN 105634658A
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Abstract
The invention provides a transmission processing method, equipment and system, and the method, equipment and system are used for solving problems of the increase of reference signal resource expenditure and the reduction of system performances because there are more reference signals to be transmitted if the number of base station antennas in a large-size antenna system is larger. The method comprises the steps that network side equipment enables network side equipment to receive SRS and quantized values for expressing noise and an interference value, determines a downlink channel matrix, determines a downlink parameter according to the downlink channel matrix and the quantized values, and carries out the transmission processing of downlink data according to the downlink parameter; user equipment measures the CRS, carries out the quantification of a measurement result, and transmits the SRS and the quantized values. According to the embodiment of the invention, the network side equipment obtains the downlink matrix according to SRS estimation uplink employing channel reciprocity, and calculates the CQI and RI according to the downlink channel matrix and the quantized values, thereby reducing the complexity of the user equipment in channel measurement, reducing the reference signal resource expenditure, and improving the system performances.
Description
Technical field
The present invention relates to wireless communication technology field, particularly to a kind of method, equipment and system being transmitted processing.
Background technology
In extensive antenna system, by configuring, in base station end, the small-sized integrated aerial array that many power are low, provide service for multiple users, it is possible to effectively promote power system capacity simultaneously. At present, at LTE (LongTermEvolution, Long Term Evolution) in system, the relation that the number of reference signal resource expense is certain with how many existence of antenna port quantity, such as: have the LTE system of 8 antenna ports, reference signal resource expense is more than 20%, and increasing along with antenna port number, and reference signal resource expense also increases in succession. Meanwhile, along with increasing of antenna port number, high-dimensional channel estimating brings huge pressure also to receiving terminal complexity.
As it is shown in figure 1, be in prior art, the traditional method of TDD (TimeDivisionDuplexing, time division duplex) system. As can be known from Fig. 1, this TDD system has 8 antenna ports, corresponding 8 reference signals, and in realizing channel estimation process, base station end needs to send 8 reference signals to user side. When system expands to 64 antenna ports, or during 128 antenna port, base station end needs to send more reference signal to user side, and therefore, reference signal resource expense will greatly increase, and the performance of simultaneity factor also will greatly reduce.
In sum, in current extensive antenna system, base station end antenna amount is more many, it is necessary to the reference signal sent to user side is also more many, thus adding reference signal resource expense, and reduces the performance of system.
Summary of the invention
The present invention provides a kind of method, equipment and system being transmitted processing, in order to solve in prior art exist in extensive antenna system, base station end antenna amount is more many, need the reference signal sent to user side also more many, thus add the resource overhead of reference signal, and the problem reducing the performance of system.
The embodiment of the present invention provides a kind of method being transmitted and processing, including:
Network equipment receives the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained;
Described network equipment is estimated to obtain up channel matrix according to described SRS, determines down channel matrix according to up channel matrix;
Described network equipment carries out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter;
Described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by described network equipment.
Owing to the invention process network equipment estimates up channel according to SRS, and utilize channel reciprocity to obtain downmix, avoid the channel estimation calculation carrying out high complexity at subscriber equipment, and then reduce the complexity of subscriber equipment, and CRS is only sent to subscriber equipment by network equipment, extra channel condition information measuring reference signals CSI-RS need not be sent, reduce reference signal resource expense, and improve the performance of system.
It is preferred that described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by described network equipment, including:
Described subscriber equipment is carried out descending scheduling according to the channel quality information CQI in described downstream parameter by described network equipment, and sends downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment.
Owing to the invention process network equipment according to the down channel matrix determined and represents that the quantized value of noise and interference value calculates CQI, it is to avoid the CQI carrying out high complexity at subscriber equipment calculates, and then reduces the complexity of subscriber equipment.
It is preferred that described network equipment is estimated to obtain up channel matrix according to described SRS, after determining down channel matrix according to up channel matrix, before described subscriber equipment transmission downlink data, also include:
Described network equipment carries out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that order instruction RI and Modulation and Coding Scheme MCS;
Described network equipment sends downlink data to described subscriber equipment, also includes:
Described RI and the MCS determined is sent jointly to subscriber equipment with downlink data by described network equipment, so that described subscriber equipment carries out downlink data reception process according to described RI and MCS.
Owing to the invention process network equipment according to the down channel matrix determined and represents that the quantized value of noise and interference value calculates RI, it is to avoid the RI carrying out high complexity at subscriber equipment calculates, and then reduces the complexity of subscriber equipment.
The embodiment of the present invention provides a kind of method being transmitted and processing, including:
The cell special reference CRS measurement that network equipment is sent by subscriber equipment, and measurement result is quantified the quantized value obtained for representing noise and interference value;
Described subscriber equipment sends Sounding Reference Signal SRS and the described quantized value for representing noise and interference value to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
Owing to embodiment of the present invention subscriber equipment has only to SRS and is used for representing that the quantized value of noise and interference value feeds back to network equipment, it is not necessary to channel estimating and CQI, RI of carrying out high complexity calculate, thus reducing the complexity of subscriber equipment.
It is preferred that described subscriber equipment sends after SRS and the described quantized value for representing noise and interference value to described network equipment, also include:
Described subscriber equipment receives Modulation and Coding Scheme MCS and order instruction RI from network equipment;
Described subscriber equipment carries out downlink data reception process according to described MCS and RI.
The embodiment of the present invention provides a kind of equipment being transmitted and processing, including:
First receiver module, for receiving the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained;
First determines module, for estimating to obtain up channel matrix according to described SRS according to described SRS, determines down channel matrix according to up channel matrix;
Second determines module, for carrying out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter;
Send processing module, for described subscriber equipment being carried out downlink data transmission process according to described downstream parameter.
It is preferred that described transmission processing module, specifically for:
According to the channel quality information CQI in described downstream parameter, described subscriber equipment carried out descending scheduling, and send downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment.
It is preferred that described equipment also includes:
3rd determines module, for carrying out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that order instruction RI and Modulation and Coding Scheme MCS;
Described transmission processing module, is additionally operable to:
Described RI and the MCS determined is sent jointly to subscriber equipment with downlink data, so that described subscriber equipment carries out downlink data reception process according to described RI and MCS.
The embodiment of the present invention provides a kind of equipment being transmitted and processing, including:
Measure and quantization modules, for the cell special reference CRS measurement that network equipment is sent, and measurement result is quantified the quantized value obtained for representing noise and interference value;
Sending module, for sending Sounding Reference Signal SRS and the described quantized value for representing noise and interference value to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
It is preferred that this equipment also includes:
Second receiver module, for receiving Modulation and Coding Scheme MCS and order instruction RI from network equipment;
Receiving processing module, for carrying out downlink data reception process according to described MCS and RI.
The embodiment of the present invention provides a kind of system being transmitted and processing, including:
Network equipment, for receiving the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained; Estimate to obtain up channel matrix according to described SRS, determine down channel matrix according to up channel matrix; Described down channel matrix and the described quantized value for representing noise and interference value according to determining carry out channel quality measurement calculating, it is determined that downstream parameter; According to described downstream parameter, described subscriber equipment carried out downlink data transmission process.
Subscriber equipment, for the cell special reference CRS measurement that network equipment is sent, and quantifies the quantized value obtained for representing noise and interference value to measurement result; Sounding Reference Signal SRS and the described quantized value for representing noise and interference value is sent to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
Embodiment of the present invention network equipment estimates up channel according to SRS, and utilize channel reciprocity to obtain downmix, and the quantized value according to the down channel matrix obtained and expression noise and interference value calculates CQI, RI, avoid the channel estimating and CQI, RI calculating that carry out high complexity at subscriber equipment, and then reduce the complexity of subscriber equipment, and CRS is only sent to subscriber equipment by network equipment, extra CSI-RS need not be sent, reduce reference signal resource expense, and improve the performance of system; Subscriber equipment has only to SRS and is used for representing that the quantized value of noise and interference value feeds back to network equipment, it is not necessary to channel estimating and CQI, RI of carrying out high complexity calculate, thus reducing the complexity of subscriber equipment.
Accompanying drawing explanation
Fig. 1 is the traditional method schematic diagram of TDD system in background technology;
Fig. 2 is the method flow schematic diagram that the embodiment of the present invention one is transmitted processing;
Fig. 3 is the method flow schematic diagram that the embodiment of the present invention two is transmitted processing;
Fig. 4 carries out downlink data to process operating process schematic diagram between the embodiment of the present invention three network equipment and subscriber equipment;
Fig. 5 is the method flow schematic diagram that the embodiment of the present invention four is transmitted processing;
Fig. 6 is the device structure schematic diagram that the embodiment of the present invention five is transmitted processing;
Fig. 7 is the device structure schematic diagram that the embodiment of the present invention six is transmitted processing;
Fig. 8 is the system structure schematic diagram that the embodiment of the present invention seven is transmitted processing.
Detailed description of the invention
Embodiment of the present invention network equipment receives the SRS (SoundingReferenceSignal from subscriber equipment, Sounding Reference Signal), and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring CRS (Cell-specificReferenceSignals, the cell special reference) measurement result obtained, described network equipment is estimated to obtain up channel matrix according to described SRS, determines down channel matrix according to up channel matrix, described network equipment carries out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter, described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by described network equipment, the CRS measurement that network equipment is sent by subscriber equipment, and measurement result is quantified the quantized value obtained for representing noise and interference value, described subscriber equipment sends SRS and the described quantized value for representing noise and interference value to described network equipment, so that described subscriber equipment is carried out downlink data transmission process according to the described SRS down channel matrix determined and the described quantized value for representing noise and interference value by described network equipment. owing to embodiment of the present invention network equipment estimates up channel according to SRS, channel reciprocity is utilized to obtain downmix, and the quantized value according to the down channel matrix obtained and expression noise and interference value calculates CQI (ChannelQualityIndicator, channel quality information), RI (RankIndication, order indicates), avoid the channel estimating and the CQI that carry out high complexity at subscriber equipment, RI calculates, and then reduce the complexity of subscriber equipment, and CRS is only sent to subscriber equipment by network equipment, extra CSI-RS (channelstateinformationreferencesignal need not be sent, channel condition information measuring reference signals), reduce reference signal resource expense, and improve the performance of system.
Network equipment in the embodiment of the present invention can be base station (such as macro base station, Home eNodeB etc.), it is also possible to be RN (relaying) equipment, it is also possible to be other network equipment.
Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.
As in figure 2 it is shown, the method that the embodiment of the present invention one is transmitted processing includes:
Step 200, network equipment receive the SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the CRS measurement result obtained;
Step 201, described network equipment are estimated to obtain up channel matrix according to described SRS, determine down channel matrix according to up channel matrix;
Step 202, described network equipment carry out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter;
Described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by step 203, described network equipment.
Before step 200, network equipment can send CRS to subscriber equipment.
In force, network equipment, when determining down channel matrix, first is estimated to obtain up channel matrix according to SRS, is obtained down channel matrix further according to channel reciprocity.
Detailed process may refer to 3GPPTS36.211 agreement.
Wherein, embodiment of the present invention network equipment carry out downlink data transmission process include: descending scheduling and send downlink data.
It is preferred that in step 203, described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by described network equipment, including:
Described subscriber equipment is carried out descending scheduling according to the CQI in described downstream parameter by described network equipment, and sends downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment.
Described subscriber equipment is carried out descending scheduling according to the CQI in described downstream parameter by described network equipment, specifically, network equipment carries out descending scheduling according to CQI, user's request, buffer (buffer) information such as state and radio resource state.
Described network equipment sends downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment, it is specially, network equipment will after wave beam forming vector or wave beam formed matrix be weighted process by downlink data, according to scheduling scheme, send downlink data to subscriber equipment.
Different systems, the agreement that network equipment adopts to subscriber equipment transmission downlink data is also different, such as, in LTE system, the process that concrete network equipment sends downlink data to subscriber equipment is identical with the process sending downlink data in 3GPPTS36.212; In other systems, the agreement that network equipment adopts to subscriber equipment transmission downlink data can also be transmitted downlink data operation with reference to the mode of regulation in the agreement of correspondence system, does not repeat them here.
Embodiment of the present invention network equipment sends RI and MCS (Modulationandcodingscheme, Modulation and Coding Scheme) to subscriber equipment, in order to subscriber equipment according to RI and the MCS the received mode carrying out downlink data reception process is:
It is preferred that described network equipment is estimated to obtain up channel matrix according to described SRS, after determining down channel matrix according to up channel matrix, before described subscriber equipment transmission downlink data, also include:
Described network equipment carries out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that RI and MCS;
Described network equipment sends downlink data to described subscriber equipment, also includes:
Described RI and the MCS determined is sent jointly to subscriber equipment with downlink data by described network equipment, so that described subscriber equipment carries out downlink data reception process according to described RI and MCS.
When described RI and the MCS determined is sent jointly to subscriber equipment with downlink data by network equipment, it is possible to sent by RRC signaling.
It should be noted that the embodiment of the present invention is not limited to be sent by RRC signaling, any mode that RI and MCS can be sent to subscriber equipment is all suitable for the embodiment of the present invention.
As it is shown on figure 3, the method that the embodiment of the present invention two is transmitted processing includes:
The CRS measurement that network equipment is sent by step 300, subscriber equipment, and measurement result is quantified the quantized value obtained for representing noise and interference value;
Step 301, described subscriber equipment send SRS and the described quantized value for representing noise and interference value to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
Embodiment of the present invention subscriber equipment acquisition RI and MCS carries out the mode of downlink data reception process:
It is preferred that described subscriber equipment sends after SRS and the described quantized value for representing noise and interference value to described network equipment, also include:
Described subscriber equipment receives MCS and the RI from network equipment;
Described subscriber equipment carries out downlink data reception process according to described MCS and RI.
MCS in embodiment of the present invention signaling information is for determining the Modulation and Coding Scheme of subscriber equipment, and the RI in signaling information is for determining the data stream number of subscriber equipment. Concrete subscriber equipment carries out downlink data reception processing procedure according to MCS and RI: subscriber equipment is according to the Modulation and Coding Scheme determined and the data stream number determined, and PDCCH (PhysicalDownlinkControlChannel, Physical Downlink Control Channel) in control information, and utilize DMRS to carry out channel estimating, data are processed.
Described subscriber equipment carries out downlink data reception process according to described MCS and RI, specifically, subscriber equipment obtains the signaling informations such as MCS, RI, and demodulates downlink data according to DMRS.
Different systems, it is also different that subscriber equipment carries out the agreement that downlink data reception process adopts, such as, in LTE system, concrete subscriber equipment carries out the process of downlink data reception process, and carry out the process of downlink data reception process with the subscriber equipment in 3GPPTS36.212 identical; In other systems, subscriber equipment carries out the agreement that downlink data reception process adopts can also carry out downlink data reception process with reference to the mode of regulation in the agreement of correspondence system, does not repeat them here.
Carry out downlink data process operating process between embodiment of the present invention network equipment and subscriber equipment and specifically may refer to Fig. 4.
As it is shown in figure 5, the method that the embodiment of the present invention four is transmitted processing includes:
Step 400, network equipment send CRS to subscriber equipment;
CRS measured by step 401, subscriber equipment, measurement result is quantified, obtains the quantized value for characterizing noise and interference value;
Step 402, subscriber equipment send the quantized value of SRS and noise and interference to network equipment;
Step 403, network equipment utilize SRS to estimate to obtain up channel matrix, obtain down channel matrix further according to channel reciprocity;
Step 404, network equipment are according to down channel matrix, and the quantized value of the noise of subscriber equipment feedback and interference determines CQI, RI and wave beam forming vector or wave beam formed matrix;
Step 405, network equipment carry out descending scheduling according to information such as CQI, user's request, buffer state and radio resource state, and determine MCS and number of data layers that user uses.
Step 406, network equipment are according to scheduling scheme, downlink data and DMRS (DemodulationReferenceSymbol is sent to subscriber equipment, demodulation reference mark), wherein, downlink data to be weighted processing through wave beam forming vector or wave beam formed matrix.
Step 407, simultaneously, network equipment sends the signaling informations such as MCS, RI to subscriber equipment;
Step 408, subscriber equipment obtain the signaling informations such as MCS, RI, and demodulate downlink data according to DMRS.
CRS is only sent to subscriber equipment by embodiment of the present invention network equipment network equipment, extra CSI-RS need not be sent, and have only to carry out at network equipment the channel estimating of high complexity, reduce reference signal resource expense, and improve the performance of system. the reference signal resource amount of overhead increased in the transmission processing method show the reference signal resource amount of overhead increased in tradition transmission processing method in table 1, realizing channel estimation methods and the present invention, the contrast form realizing channel estimation methods. as can be seen from Table 1, have the system of 64 antenna ports, use tradition send processing method increase reference signal resource amount of overhead equal to 60 reference signals examine signal resource expense, have the system of 128 antenna ports, use tradition send processing method increase reference signal resource amount of overhead equal to 124 reference signals examine signal resource expense, and use the transmission processing method of the present invention need not increase extra reference signal resource amount of overhead, the transmission processing method of the known present invention is fewer than the reference signal resource expense of traditional transmission processing method. also knowing that from table 1, have 64 antenna ports or the system of 128 antenna ports, use tradition to send processing method, subscriber equipment requires over reference signal and estimates to obtain each port channel, and carries out channel quality measurement calculating, feeds back to base station. and using the transmission processing method of the present invention, subscriber equipment no longer carries out channel quality measurement calculating and feeds back, it is known that the transmission processing method of the present invention is lower than the complexity of the subscriber equipment of traditional transmission processing method.
Table 1
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of equipment being transmitted processing and a kind of system being transmitted processing, owing to the method that the equipment being transmitted processing of Fig. 6 and Fig. 7 is corresponding is a kind of method being transmitted processing of the embodiment of the present invention, the method that the system being transmitted processing of Fig. 8 is corresponding is a kind of method being transmitted processing of the embodiment of the present invention, therefore the enforcement of embodiment of the present invention equipment and system may refer to the enforcement of system, repeats part and repeats no more.
As shown in Figure 6, the equipment that the embodiment of the present invention five is transmitted processing includes:
First receiver module 500, for receiving the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained;
First determines module 501, for estimating to obtain up channel matrix according to described SRS, determines down channel matrix according to up channel matrix;
Second determines module 502, for carrying out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter;
Send processing module 503, for described subscriber equipment being carried out downlink data transmission process according to described downstream parameter.
It is preferred that described transmission processing module 503, specifically for:
According to the channel quality information CQI in described downstream parameter, described subscriber equipment carried out descending scheduling, and send downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment.
It is preferred that described equipment also includes:
3rd determines module 504, for carrying out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that order instruction RI and Modulation and Coding Scheme MCS;
Described transmission processing module 503, is additionally operable to:
Described RI and the MCS determined is sent jointly to subscriber equipment with downlink data, so that described subscriber equipment carries out downlink data reception process according to described RI and MCS.
As it is shown in fig. 7, the equipment that the embodiment of the present invention six is transmitted processing includes:
Measure and quantization modules 600, for the cell special reference CRS measurement that network equipment is sent, and measurement result is quantified the quantized value obtained for representing noise and interference value;
Sending module 601, for sending Sounding Reference Signal SRS and the described quantized value for representing noise and interference value to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
It is preferred that this equipment also includes:
Second receiver module 602, for receiving Modulation and Coding Scheme MCS and order instruction RI from network equipment;
Receiving processing module 603, for carrying out downlink data reception process according to described MCS and RI.
As shown in Figure 8, the system that the embodiment of the present invention seven is transmitted processing includes:
Network equipment 700, for receiving the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained; Estimate to obtain up channel matrix according to described SRS, determine down channel matrix according to up channel matrix; Described down channel matrix and the described quantized value for representing noise and interference value according to determining carry out channel quality measurement calculating, it is determined that downstream parameter; According to described downstream parameter, described subscriber equipment carried out downlink data transmission process.
Subscriber equipment 701, for the cell special reference CRS measurement that network equipment is sent, and quantifies the quantized value obtained for representing noise and interference value to measurement result; Sounding Reference Signal SRS and the described quantized value for representing noise and interference value is sent to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
It can be seen from the above: owing to embodiment of the present invention network equipment estimates up channel according to SRS, and utilize channel reciprocity to obtain downmix, and the quantized value according to the down channel matrix obtained and expression noise and interference value calculates CQI, RI, avoid the channel estimating and the CQI that carry out high complexity at subscriber equipment, RI calculates, and then reduce the complexity of subscriber equipment, and CRS is only sent to subscriber equipment by network equipment, extra CSI-RS need not be sent, reduce reference signal resource expense, and improve the performance of system, subscriber equipment has only to SRS and is used for representing that the quantized value of noise and interference value feeds back to network equipment, it is not necessary to channel estimating and CQI, RI of carrying out high complexity calculate, thus reducing the complexity of subscriber equipment.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program. Therefore, the present invention can adopt the form of complete hardware embodiment, complete software implementation or the embodiment in conjunction with software and hardware aspect. And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe. It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame. These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
Although preferred embodiments of the present invention have been described, but those skilled in the art are once know basic creative concept, then these embodiments can be made other change and amendment. So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art. So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. the method being transmitted processing, it is characterised in that the method includes:
Network equipment receives the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained;
Described network equipment is estimated to obtain up channel matrix according to described SRS, determines down channel matrix according to up channel matrix;
Described network equipment carries out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter;
Described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by described network equipment.
2. the method for claim 1, it is characterised in that described subscriber equipment is carried out downlink data transmission process according to described downstream parameter by described network equipment, including:
Described subscriber equipment is carried out descending scheduling according to the channel quality information CQI in described downstream parameter by described network equipment, and sends downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment.
3. the method for claim 1, it is characterised in that described network equipment is estimated to obtain up channel matrix according to described SRS, after determining down channel matrix according to up channel matrix, before described subscriber equipment transmission downlink data, also includes:
Described network equipment carries out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that order instruction RI and Modulation and Coding Scheme MCS;
Described network equipment sends downlink data to described subscriber equipment, also includes:
Described RI and the MCS determined is sent jointly to subscriber equipment with downlink data by described network equipment, so that described subscriber equipment carries out downlink data reception process according to described RI and MCS.
4. the method being transmitted processing, it is characterised in that the method includes:
The cell special reference CRS measurement that network equipment is sent by subscriber equipment, and measurement result is quantified the quantized value obtained for representing noise and interference value;
Described subscriber equipment sends Sounding Reference Signal SRS and the described quantized value for representing noise and interference value to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
5. method as claimed in claim 4, it is characterised in that described subscriber equipment sends after SRS and the described quantized value for representing noise and interference value to described network equipment, also includes:
Described subscriber equipment receives Modulation and Coding Scheme MCS and order instruction RI from network equipment;
Described subscriber equipment carries out downlink data reception process according to described MCS and RI.
6. the equipment being transmitted process, it is characterised in that this equipment includes:
First receiver module, for receiving the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained;
First determines module, for estimating to obtain up channel matrix according to described SRS, determines down channel matrix according to up channel matrix;
Second determines module, for carrying out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that downstream parameter;
Send processing module, for described subscriber equipment being carried out downlink data transmission process according to described downstream parameter.
7. equipment as claimed in claim 6, it is characterised in that described transmission processing module, specifically for:
According to the channel quality information CQI in described downstream parameter, described subscriber equipment carried out descending scheduling, and send downlink data according to the wave beam forming vector in described downstream parameter or wave beam formed matrix to described subscriber equipment.
8. equipment as claimed in claim 6, it is characterised in that described equipment also includes:
3rd determines module, for carrying out channel quality measurement calculating according to the described down channel matrix determined and the described quantized value for representing noise and interference value, it is determined that order instruction RI and Modulation and Coding Scheme MCS;
Described transmission processing module, is additionally operable to:
Described RI and the MCS determined is sent jointly to subscriber equipment with downlink data, so that described subscriber equipment carries out downlink data reception process according to described RI and MCS.
9. the equipment being transmitted process, it is characterised in that this equipment includes:
Measure and quantization modules, for the cell special reference CRS measurement that network equipment is sent, and measurement result is quantified the quantized value obtained for representing noise and interference value;
Sending module, for sending Sounding Reference Signal SRS and the described quantized value for representing noise and interference value to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
10. equipment as claimed in claim 9, it is characterised in that this equipment also includes:
Second receiver module, for receiving Modulation and Coding Scheme MCS and order instruction RI from network equipment;
Receiving processing module, for carrying out downlink data reception process according to described MCS and RI.
11. one kind is transmitted the system processed, it is characterised in that this system includes:
Network equipment, for receiving the Sounding Reference Signal SRS from subscriber equipment, and for representing the quantized value of noise and interference value, the wherein said quantized value for representing noise and interference value is that described subscriber equipment carries out quantifying to obtain according to measuring the cell special reference CRS measurement result obtained; Estimate to obtain up channel matrix according to described SRS, determine down channel matrix according to up channel matrix; Described down channel matrix and the described quantized value for representing noise and interference value according to determining carry out channel quality measurement calculating, it is determined that downstream parameter; According to described downstream parameter, described subscriber equipment carried out downlink data transmission process;
Subscriber equipment, for the cell special reference CRS measurement that network equipment is sent, and quantifies the quantized value obtained for representing noise and interference value to measurement result; Sounding Reference Signal SRS and the described quantized value for representing noise and interference value is sent to described network equipment, so that the down channel matrix that described network equipment is determined according to described SRS and channel reciprocity, and described subscriber equipment is carried out downlink data transmission process by the described quantized value for representing noise and interference value.
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| CN201410602805.3A CN105634658A (en) | 2014-10-31 | 2014-10-31 | Transmission processing method, equipment and system |
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