CN102244557A - Method and device for transmitting and receiving channel sounding reference signals - Google Patents
Method and device for transmitting and receiving channel sounding reference signals Download PDFInfo
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Abstract
The invention discloses a method and device for transmitting and receiving channel sounding reference signals, which are used for reducing required time-frequency code resources for transmitting an SRS (Sounding Reference Signal) and simultaneously assisting a communication system to realize uplink and downlink transmissions with better performances. The method comprises the following steps: a user terminal determines a first pre-coding matrix used for coding a channel sounding reference signal for assisting the uplink transmission and a second pre-coding matrix used for coding the channel sounding reference signal for assisting the downlink transmission; the user terminal uses the first pre-coding matrix and the second pre-coding matrix to respectively code the channel sounding reference signals so as to obtain a first channel sounding reference signal and a second channel sounding reference signal; and the user terminal transmits the first channel sounding reference signal and the second channel sounding reference signal to a base station.
Description
Technical field
The present invention relates to communication technical field, relate in particular to the method and the device of a kind of transmission and receive channel detection reference signal.
Background technology
At Long Term Evolution (LTE, Long Term Evolution) in the system, in order to realize up frequency domain dispatching, user terminal (UE, User Equipment) except will in the data transfer bandwidth of this UE self, sending demodulated reference signal, also need be in than the bigger broadband of this data transfer bandwidth transmitting channel detection reference signal (SRS, Sounding Reference Signal) so that channel is surveyed, thereby realize helping the base station that UE is carried out the purpose that uplink transmission resource is distributed.
In the LTE-A of follow-up evolution system, UE can adopt many transmit antennas (typical number of transmit antennas be 1,2 and 4 etc.) to send SRS, but this just needs the more SRS time-frequency code of system configuration resource to carry out the SRS transmission.And, in LTE-A, the uplink transmission resource of UE is distributed the method for salary distribution of supporting based on string (cluster), according to the method for salary distribution based on cluster, ascending resource might be distributed on the subband far away of being separated by, therefore in order to support the user to dispatch and up precoding (precoding), UE need send SRS so that channel is surveyed under bigger bandwidth, thereby can further strengthen demand to SRS time-frequency code resource, and increase can directly cause up expense (overhead) significantly to increase to SRS time-frequency code demand, reduces the uplink spectrum efficiency.
At present existing program is proposed to adopt SRS transmission means based on precoding to be reduced in and is sent the demand of SRS to the time-frequency code resource on the bigger bandwidth, promptly, utilize the pre-coding matrix of configuration that SRS is carried out sending after the encoding process more earlier at uplink multi-users scheduling allocating pre-coding matrix.Yet, the same pre-coding matrix of employing that provides in the employing prior art is encoded to the SRS that helps uplink, downlink transfer and transmit the scheme of channel response value being estimated to realize on channel, can't help communication system to realize the up and downlink transfer of better performances simultaneously.
Summary of the invention
The invention provides the method and the device of a kind of transmission and receive channel detection reference signal,, help the up and downlink transfer of communication system realization better performances in order to when reducing the required time-frequency code resource of transmission SRS.
The present invention is by the following technical solutions:
A kind of method of transmitting channel detection reference signal comprises:
Second pre-coding matrix that user terminal is identified for first pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded and is used for the Sounding Reference Signal that helps downlink transfer is encoded; And utilize first pre-coding matrix, second pre-coding matrix, Sounding Reference Signal is encoded obtain first Sounding Reference Signal, second channel detection reference signal respectively; And send first Sounding Reference Signal and second channel detection reference signal to the base station.
Preferably, determine that first precoding and second pre-coding matrix specifically comprise: user terminal sends the 3rd Sounding Reference Signal to the base station; And receive the first pre-coding matrix information of determining and sending according to the 3rd Sounding Reference Signal by the base station, determine first pre-coding matrix according to the first pre-coding matrix information; And, determine second pre-coding matrix according to the down channel detection reference signal that the base station sends.
Preferably, determine that first pre-coding matrix and second pre-coding matrix specifically comprise: user terminal sends the 3rd Sounding Reference Signal to the base station; And receive the first pre-coding matrix information and the second pre-coding matrix information of determining and sending according to the 3rd Sounding Reference Signal by the base station; According to the first pre-coding matrix information and the second pre-coding matrix information, determine first pre-coding matrix and second pre-coding matrix respectively.
A kind of method of receive channel detection reference signal comprises:
The base station receives first Sounding Reference Signal and the second channel detection reference signal that user terminal sends, wherein, first Sounding Reference Signal is used for pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded for the user terminal utilization, Sounding Reference Signal encoded obtain, second pre-coding matrix is used for pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded for the user terminal utilization, and Sounding Reference Signal is encoded to be obtained.
A kind of device of transmitting channel detection reference signal comprises:
The pre-coding matrix determining unit is used to second pre-coding matrix that is identified for first pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded and is used for the Sounding Reference Signal that helps downlink transfer is encoded; Coding unit, first pre-coding matrix, second pre-coding matrix that are used to utilize the pre-coding matrix determining unit to determine are encoded to Sounding Reference Signal respectively and are obtained first Sounding Reference Signal, second channel detection reference signal; Transmitting element is used for sending first Sounding Reference Signal and the second channel detection reference signal that coding unit obtains to the base station.
A kind of device of receive channel detection reference signal comprises:
First receiving element, be used to receive first Sounding Reference Signal that user terminal sends, wherein, first Sounding Reference Signal is used for pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded for the user terminal utilization, and Sounding Reference Signal is encoded to be obtained; Second receiving element, be used to receive the second channel detection reference signal that user terminal sends, wherein, the second channel detection reference signal is used for pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded for the user terminal utilization, and Sounding Reference Signal is encoded to be obtained.
Beneficial effect of the present invention is as follows: the scheme that the embodiment of the invention provides is by being definite first pre-coding matrix that helps the Sounding Reference Signal of uplink, and be definite second pre-coding matrix that helps the Sounding Reference Signal of downlink transfer, utilize first pre-coding matrix, second pre-coding matrix, respectively Sounding Reference Signal is encoded and obtain first Sounding Reference Signal, behind the second channel detection reference signal, send out first Sounding Reference Signal and second channel detection reference signal to the base station, thereby can realize respectively at SRS that helps uplink and the SRS allocating pre-coding matrix that helps downlink transfer, therefore when reducing the required time-frequency code resource of transmission SRS, the scheme that provides in the prior art has been provided adopts same pre-coding matrix to helping uplink, the SRS of downlink transfer encodes and transmits on channel with realization channel response value is estimated, can't help communication system to realize the problem of the up and downlink transfer of better performances simultaneously.
Description of drawings
The idiographic flow schematic diagram of the method for a kind of SRS of transmission that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the schematic diagram that sends a kind of situation of first, second, third SRS in the embodiment of the invention;
The concrete structure schematic diagram of the device of a kind of SRS of transmission that Fig. 3 provides for the embodiment of the invention;
The concrete structure schematic diagram of the device of a kind of SRS of reception that Fig. 4 provides for the embodiment of the invention.
Embodiment
A considerable advantage according to the LTE-TDD system---channel reciprocity, SRS not only can be with helping uplink, and the while also can be with helping downlink transfer.Yet in the prior art, general only be at the SRS allocating pre-coding matrix that helps uplink, and is not to be suitable for the SRS of help downlink transfer is encoded at the SRS allocating pre-coding matrix that helps uplink.Therefore, come the SRS that helps downlink transfer is encoded, then can make the base station not accurate enough according to the resulting channel response estimated value of SRS that helps downlink transfer if be adopted as the pre-coding matrix of the SRS configuration that helps uplink.As seen, adopt the scheme of prior art, can't help communication system to realize the up and downlink transfer of better performances simultaneously.And in transmission that the embodiment of the invention provides and the scheme that receives SRS, by being respectively the SRS allocating pre-coding matrix that helps uplink, simultaneously for helping the other pre-coding matrix of SRS configuration of downlink transfer, make that need not a shared identical pre-coding matrix encodes to SRS that helps uplink and the SRS that helps downlink transfer again, but can utilize mutually different pre-coding matrix respectively SRS that helps uplink and the SRS that helps downlink transfer to be encoded respectively, thereby be implemented in when reduce sending the required time-frequency code resource of SRS, help communication system to realize the up and downlink transfer of better performances.
At first, the embodiment of the invention provides the method for a kind of SRS of transmission, and the idiographic flow schematic diagram of this method may further comprise the steps as shown in Figure 1:
Second pre-coding matrix that step 11, user terminal are identified for first pre-coding matrix that the SRS that helps uplink is encoded and are used for the SRS that helps downlink transfer is encoded;
Provide such scheme as can be known according to the embodiment of the invention, help SRS up, downlink transfer to dispose pre-coding matrix respectively owing to be respectively, thereby when the SRS that helps downlink transfer is carried out precoding, need not to utilize again only pre-coding matrix SRS up to helping, downlink transfer to carry out encoding process.Thereby the scheme that adopts the embodiment of the invention to provide can help communication system to realize the up and downlink transfer of better performances utilizing pre-coding matrix SRS to be encoded with when reducing the required time-frequency code resource of transmission SRS.
At above-mentioned steps 11, in embodiments of the present invention, can adopt multiple mode to determine first pre-coding matrix and second pre-coding matrix, such as, user terminal can be by sending the mode of SRS to the base station, first pre-coding matrix and second pre-coding matrix are determined in the cause base station.Particularly, user terminal can send Three S's RS to the base station, and receive the first pre-coding matrix information and the second pre-coding matrix information of determining and sending according to Three S's RS by the base station, thereby can be according to the first pre-coding matrix information and the second pre-coding matrix information, determine first pre-coding matrix and second pre-coding matrix respectively, in general the Three S's RS here can be Non-precoded SRS for not carrying out the SRS of precoding processing.In addition, the first pre-coding matrix information here can comprise that the information etc. of the order of first pre-coding matrix can be used for determining the information of first pre-coding matrix; Similarly, the second pre-coding matrix information can also comprise the information etc. of the order of second pre-coding matrix.Perhaps, user terminal also can only be used for determining first pre-coding matrix to the mode that the base station sends SRS, second pre-coding matrix then can adopt the base station to determine the mode of first pre-coding matrix according to SRS, by the descending SRS of user terminal self according to the base station transmission, really fix then according to the second predetermined pre-coding matrix and to determine, such as, in order to determine first, second pre-coding matrix, user terminal can send Three S's RS to the base station, and receive the first pre-coding matrix information that the base station is determined and sent according to Three S's RS, simultaneously, receive the descending SRS that send the base station; Thereby user terminal just can be determined first pre-coding matrix according to the first pre-coding matrix information that receives, and determines second pre-coding matrix according to the descending SRS that receives.In addition, user terminal can also be determined first pre-coding matrix and second pre-coding matrix according to the descending SRS that the base station sends.
In embodiments of the present invention, the average transmission of Three S's RS at interval can be greater than the average transmission interval of a SRS, while is greater than the average transmission interval of the 2nd SRS, to guarantee that the Three S's RS that sends can not take too many system resource, simultaneously, sending the used bandwidth of Three S's RS can comprise the first used bandwidth of transmission the one SRS and send the second used bandwidth of the 2nd SRS.Particularly, on the 3rd bandwidth, send Three S's RS at interval, and the schematic diagram of first and second SRS of transmission can be with reference to accompanying drawing 2 on first bandwidth and second bandwidth respectively at interval with less average transmission with average greatly transmission.In the accompanying drawing 2 described transmission situations, the one SRS is to be filled with the rectangular expression of oblique line, the 2nd SRS is the rectangular expression of white with the fill color, Three S's RS then is the rectangular expression of black with the fill color, in Fig. 2, first, second, Three S's RS is periodically transmission, perhaps, first, second, also can have only a SRS periodically to send among the Three S's RS, and other SRS send to the base station after notifying the message that sends SRS by user terminal in being used to of receiving that the base station sends, perhaps, first, second, can have two SRS periodically to send among the Three S's RS, and another SRS send after receiving above-mentioned message by user terminal to the base station.
In embodiments of the present invention, the bandwidth that sends Three S's RS can also be split as two independently bandwidth, such as, can be split as wide and the 5th bandwidth of the four-tape, user terminal can be in the four-tape sends Three S's RS respectively on wide and the 5th bandwidth, wherein, the four-tape sends the first used bandwidth of a SRS wide can comprising, the 5th bandwidth then can comprise the second used bandwidth of transmission the 2nd SRS, need to prove, the process that sends Three S's RS respectively in the four-tape on wide and the 5th bandwidth can be separate, is independent of each other.
Send in the process of Three S's RS respectively on wide and the 5th bandwidth in the above-mentioned four-tape, overlap with the process of the 2nd SRS with transmission the one SRS if find, then can overlap the time engrave the transmission of the SRS that time-out obtains precoding, such as, can determine to send simultaneously first moment of a SRS and Three S's RS earlier, and determine to send simultaneously second moment of the 2nd SRS and Three S's RS; When then on first bandwidth, sending a SRS, first transmission that suspends constantly a SRS that can determine, only Three S's RS is sent and engraved at this first o'clock, and when on second bandwidth, sending the 2nd SRS, second transmission that suspends constantly the 2nd SRS that can determine.Except SRS being suspended the mode that sends, in the embodiment of the invention, user terminal can also adopt the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send a SRS, Three S's RS to the base station on first bandwidth; Or on second bandwidth, adopt the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send the 2nd SRS, Three S's RS to the base station.
Below with the embodiment of the invention provide such scheme in practice be applied as example, utilize a plurality of embodiment to describe the concrete application process of this scheme in detail: the basic thought of these embodiment is: the process of transmitting of SRS is made up of three subprocess, be respectively subprocess one, subprocess two and subprocess three, wherein, the SRS that sends in the subprocess one is used to assist multi-subscriber dispatching, and helps to determine the SRS pre-coding matrix required in other two subprocess or the order number of pre-coding matrix etc.; Send the up Adaptive Transmission that SRS is used for help system in the subprocess two, required pre-coding matrix etc. when for example being used for determining up Adaptive Transmission; The SRS that sends in the subprocess three is used for the descending self-adapting transmission of help system, for example determine precoding/wave beam forming matrix required when descending self-adapting transmits etc., reduce the purpose that sends the required time-frequency code resource of SRS in order to reach, the SRS that sends in the subprocess two, three passes through corresponding precoding processing before transmission.More than the work that cooperatively interacts of three subprocess, finish whole SRS transfer function based on precoding.Need to prove, in the embodiment of the invention, also can by UE self determine subprocess two, three when sending SRS required pre-coding matrix (such as, can determine subprocess two, three required pre-coding matrix when transmission SRS according to the descending SRS that the base station sends), therefore as can be known, in embodiments of the present invention, subprocess one also can be implemented in practice.
Embodiment one:
The process that sends SRS among the embodiment one comprises following three subprocess SRS_0, SRS_UL and SRS_DL, wherein, and being described in detail as follows of each process:
SRS_0: in this course, SRS need not directly to send through the pre-coding matrix coding, therefore the SRS that sends in this course is Non-precoded SRS, can be based on the channel information that this Non-precodedSRS obtains with helping determine required pre-coding matrix information among the SRS_UL, UE can be periodic to the transmission of SRS among this subprocess SRS_0, also can be acyclic, can also be after receiving the notification message that is used to notify UE to send SRS of base station transmission, just to send again, behind the Non-precoded SRS that the base station sends in receiving subprocess SRS_0, the required first pre-coding matrix information in the time of can determining among the subprocess SRS_UL to send SRS according to this Non-precoded SRS, and the required second pre-coding matrix information when sending SRS among definite subprocess SRS_DL, and will determine first, the second pre-coding matrix information sends to UE;
SRS_UL: in this course, send the demand of SRS in order to reduce to system resource, UE need determine pre-coding matrix according to the first pre-coding matrix information of base station notice, and again the SRS behind the coding is sent after utilizing this first pre-coding matrix that SRS is encoded, and behind the SRS behind the coding that the base station sends, be mainly used in up Adaptive Transmission such as up pre-coding matrix selection, multi-subscriber dispatching based on the estimated channel information that obtains of this SRS in receiving this subprocess SRS_UL;
SRS_DL: in this course, send the demand of SRS in order to reduce to system resource, UE sends the SRS behind the coding after also needing to utilize second pre-coding matrix of base station notice that the SRS signal is encoded again, in this embodiment one, the required pre-coding matrix information of this SRS_DL process is except can be by the notice of base station, can also be self-determining by UE, such as, UE can determine a pre-coding matrix according to the descending SRS that send the base station, need to prove that the estimated channel information that obtains of SRS that sends based on this SRS_DL is mainly used in the transmission of help descending self-adapting.
Sending the required relevant parameter of SRS in above-mentioned any one subprocess can realize by disposing, such as: periodicity or aperiodicity send SRS, the transmission Cycle Length when periodically sending SRS, single-carrier frequency division multiple access (SC-FDMA) character position at SRS place or the like.
(from the angle of transfer resource) to a certain extent, can regard above-mentioned three subprocess as three the independently processes of " Virtual User " transmission SRS, but these three subprocess might not be fully independently, they can have certain contact each other, such as, the SRS transmission bandwidth of SRS_0 correspondence can comprise the SRS transmission bandwidth of other two subprocess; The pre-coding matrix information (such as the order that can be pre-coding matrix) that the SRS of SRS_UL and SRS_DL adopts can be notified by the base station, thereby and the base station utilizes the SRS of SRS_0 transmission to come estimating channel information to determine the order of this pre-coding matrix often; The pre-coding matrix that SRS among the SRS_UL adopts also can be that the base station is determined by PMI, thereby and also can be SRS by the SRS_0 transmission come estimating channel information to determine this pre-coding matrix in the base station; In addition, with respect to other two subprocess, the average transmission time interval of SRS can be longer among the SRS_0, like this to guarantee that sending SRS in the SRS_0 process can not take too many resource.
According to above-mentioned analysis, the SRS of above-mentioned three subprocess is transmitted in the SRS transmission that can regard three " Virtual User " to a certain extent as, so the SRS transfer resource of these three subprocess can be undertaken multiplexing by following several modes:
Time division multiplexing: the SRS transmission of three subprocess occurs on the different SC-FDMA symbols;
The subcarrier that is used for transmitting SRS in frequency division multiplexing: SRS_UL and the SRS_DL subprocess is different, such as, can be on different broach, or on the different subbands;
Code division multiplexing: different SRS sequences is adopted in the SRS of three subprocess transmission, and different SRS sequences quadrature or accurate quadrature each other;
In addition, can also adopt the hybrid mode of above-mentioned three kinds of modes that SRS is transmitted, such as, the mode that can have any two SRS to be based on time-division/frequency division/code division multiplexing among the SRS in three subprocess is transmitted.
Embodiment two:
Among the embodiment two, the delivery plan of SRS can comprise four subprocess, it is respectively: SRS_0_UL, SRS_0_DL, SRS_UL and SRS_DL, wherein, the definition of SRS_UL and SRS_DL subprocess is with above-mentioned embodiment one, do not repeat them here, and the SRS_0 among the embodiment one obtains SRS_0_UL and SRS_0_DL after being divided into two parts, and it is corresponding SRS_UL and SRS_DL subprocess respectively, need to prove, the SRS role and the embodiment one of the process of transmission SRS and transmission are similar among SRS_0_UL and the SRS_0_DL, and difference only is: the bandwidth that sends SRS among the SRS_0_UL only need comprise the bandwidth that sends SRS among the SRS_UL and get final product; The bandwidth that sends SRS simultaneously among the SRS_0_DL only need comprise the bandwidth that sends SRS among the SRS_DL and get final product.
Similar with embodiment one, from the angle of transfer resource, four subprocess of embodiment two can be regarded four " Virtual User " as and carry out SRS transmission, its transfer resource multiplex mode also with above-mentioned SRS resource multiplex mode roughly the same, repeat no more.
Embodiment three:
In embodiment three, SRS_0 subprocess among the embodiment one can be fused in the SRS_UL subprocess, such as, in the SRS_UL subprocess, can select the precoding that SRS adopted on some SC-FDMA character position for use and realize Non-precoded SRS transmission since the specific forms, thereby just can regard as originally need be at the Non-precoded SRS that SRS_0 sent for the SRS on those SC-FDMA character positions.Need to prove, can be to choose the above-mentioned SC-FDMA symbol that is used to send Non-precoded SRS by the semi-static configuration of system with coming property performance period, perhaps also can adopt acyclic mode, choose the above-mentioned SC-FDMA symbol that is used to send Non-precoded SRS by send means of signaling notice UE to UE by the base station.At the scheme that the SRS_0 subprocess is fused to the SRS_UL subprocess that embodiment three proposes, the situation for UE adopts two transmitting antennas, can adopt the following fusion that realizes SRS_0 and SRS_UL of sending:
---------------------------------------------------------time domain
…SRS_UL
SRS_UL SRS_UL
SRS_UL…
---------------------------------------------------------time domain
…SRS_UL
SRS_UL SRS_UL SRS_UL…
The normal transmission of the SRS_UL subprocess in the SRS_UL representation scheme one wherein;
With
Represent respectively to adopt in the SRS_UL subprocess
With
Pre-coding matrix as SRS;
Similarly, the SRS_0 subprocess among the embodiment one also can be fused in the SRS_DL subprocess, perhaps is fused to simultaneously in two subprocess of SRS_UL and SRS_DL, and its implementation procedure and above-mentionedly SRS_0 is fused among the SRS_UL similar repeats no more.
Embodiment four:
In embodiment four, with be fused to SRS_0 among the SRS_UL among the embodiment three or similar among the SRS_DL, SRS_0_UL among the embodiment two and SRS_0_DL subprocess can be fused to respectively among SRS_UL and the SRS_DL, implementation procedure among the implementation procedure of specific embodiment four and the embodiment three is similar, does not repeat them here.
Correspondingly, the embodiment of the invention also provides the method for a kind of SRS of reception, this method is: the base station receives a SRS and the 2nd SRS that user terminal sends, wherein, wherein, a SRS is used for pre-coding matrix that the SRS that helps uplink is encoded for the user terminal utilization, and SRS is encoded to be obtained, second pre-coding matrix is used for pre-coding matrix that the SRS that helps downlink transfer is encoded for the user terminal utilization, and SRS is encoded to be obtained.
The method of the transmission SRS that provides corresponding to the embodiment of the invention, the embodiment of the invention provides in the method that receives SRS, the base station can also provide first, second pre-coding matrix to user terminal, and particularly, the base station can adopt following dual mode to determine pre-coding matrix:
First kind of mode:
The base station can receive the Three S's RS that user terminal sends, thereby according to Three S's RS, determines first pre-coding matrix, and sends descending SRS and the first definite pre-coding matrix to user terminal.
The second way:
The base station can receive the Three S's RS that user terminal sends; Thereby according to Three S's RS, determine first, second pre-coding matrix, and send first, second pre-coding matrix of determining to user terminal.
The method of the transmission SRS that provides corresponding to the embodiment of the invention, the embodiment of the invention also provides the device of a kind of SRS of transmission, and the concrete structure schematic diagram of this device comprises following functional unit as shown in Figure 3:
Pre-coding matrix determining unit 31 is used to second pre-coding matrix that is identified for first pre-coding matrix that the SRS that helps uplink is encoded and is used for the SRS that helps downlink transfer is encoded;
Transmitting element 33 is used for sending a SRS, the 2nd SRS that coding unit 32 obtains to the base station.
In embodiments of the present invention, corresponding to the dual mode of determining first pre-coding matrix and second pre-coding matrix, can also further divide pre-coding matrix determining unit 31, preferably, pre-coding matrix determining unit 31 can be divided into following functional module, comprise:
Sending module is used for sending Three S's RS to the base station; Receiver module is used to receive the first pre-coding matrix information definite according to the Three S's RS of sending module transmission by the base station and that send, and receives the descending SRS that the base station sends; Determination module is used for the first pre-coding matrix information according to the receiver module reception, determines first pre-coding matrix, and according to the descending SRS that receiver module receives, determines second pre-coding matrix.
Perhaps, also pre-coding matrix determining unit 31 can be divided into following functional module:
Sending module is used for sending Three S's RS to the base station; Receiver module is used to receive the first pre-coding matrix information and the second pre-coding matrix information definite according to the Three S's RS of sending module transmission by the base station and that send; Determination module is used for the first pre-coding matrix information and the second pre-coding matrix information according to the receiver module reception, determines first pre-coding matrix and second pre-coding matrix respectively.
In order to reduce to send Three S's RS to the demand of time-frequency code resource, in embodiments of the present invention, the average transmission of Three S's RS at interval can be greater than the average transmission interval of a SRS, and average transmission interval greater than the 2nd SRS, at this moment, above-mentioned sending module can specifically be used for sending Three S's RS to the base station on the 3rd bandwidth, wherein, sends the 3rd used bandwidth of Three S's RS and comprises the first used bandwidth of transmission the one SRS and send the second used bandwidth of two SRS.
Perhaps, sending module can also specifically be used for sending Three S's RS to the base station in the four-tape respectively on wide and the 5th bandwidth, and wherein, the four-tape sends the first used bandwidth of a SRS wide comprising, and the 5th bandwidth comprises and sends the second used bandwidth of the 2nd SRS.
In addition, the embodiment of the invention also provides the device of a kind of SRS of reception, in order to when reducing the required time-frequency code resource of transmission SRS, helps communication system to realize the up and downlink transfer of better performances, the concrete structure schematic diagram of this device comprises following functional unit as shown in Figure 4:
First receiving element 41 is used to receive the SRS that user terminal sends, and wherein, a SRS is used for pre-coding matrix that the SRS that helps uplink is encoded and SRS is encoded obtains for the user terminal utilization;
Second receiving element 42 is used to receive the 2nd SRS that user terminal sends, and the 2nd SRS is used for pre-coding matrix that the SRS that helps downlink transfer is encoded and SRS is encoded obtains for the user terminal utilization.
Preferably, the device of the above-mentioned reception SRS that provides of the embodiment of the invention can further include:
The 3rd receiving element is used for receiving the Three S's RS that user terminal sends receive first Sounding Reference Signal and second receiving element, 42 reception second channel detection reference signals at first receiving element 41 before; The pre-coding matrix determining unit is used for the Three S's RS according to the reception of the 3rd receiving element, determines first pre-coding matrix; Transmitting element is used for sending descending SRS and the first definite pre-coding matrix of pre-coding matrix determining unit to user terminal.
Perhaps, the device of the above-mentioned reception SRS that provides of the embodiment of the invention also may further include:
The 3rd receiving element is used for receiving the Three S's RS that user terminal sends before first receiving element 41 receives first Sounding Reference Signal and second receiving element, 42 reception second channel detection reference signals; The pre-coding matrix determining unit is used for the Three S's RS according to the reception of second receiving element, determines first, second pre-coding matrix; Transmitting element is used for sending first, second pre-coding matrix that the pre-coding matrix determining unit is determined to user terminal.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (21)
1. the method for a transmitting channel detection reference signal is characterized in that, comprising:
Second pre-coding matrix that user terminal is identified for first pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded and is used for the Sounding Reference Signal that helps downlink transfer is encoded; And
Utilize first pre-coding matrix, second pre-coding matrix respectively Sounding Reference Signal to be encoded, obtain first Sounding Reference Signal, second channel detection reference signal; And
Send first Sounding Reference Signal and second channel detection reference signal to the base station.
2. the method for claim 1 is characterized in that, determines that first precoding and second pre-coding matrix specifically comprise:
User terminal sends the 3rd Sounding Reference Signal to the base station; And
The first pre-coding matrix information that reception is determined and sent according to the 3rd Sounding Reference Signal by the base station is determined first pre-coding matrix according to the first pre-coding matrix information;
And, determine second pre-coding matrix according to the down channel detection reference signal that the base station sends.
3. the method for claim 1 is characterized in that, determines that first pre-coding matrix and second pre-coding matrix specifically comprise:
User terminal sends the 3rd Sounding Reference Signal to the base station; And
The first pre-coding matrix information and the second pre-coding matrix information that reception is determined and sent according to the 3rd Sounding Reference Signal by the base station;
According to the first pre-coding matrix information and the second pre-coding matrix information, determine first pre-coding matrix and second pre-coding matrix respectively.
4. as claim 2 or 3 described methods, it is characterized in that, first, second, third Sounding Reference Signal sends to the base station notified the message of transmitting channel detection reference signal in being used to of receiving that the base station sends by user terminal after, or is periodically sent to the base station by user terminal.
5. as claim 2 or 3 described methods, it is characterized in that the 3rd Sounding Reference Signal average sends at interval greater than average transmissions of first Sounding Reference Signal at interval, and greater than the average transmission interval of second channel detection reference signal; And
User terminal sends the 3rd Sounding Reference Signal to the base station and is specially:
User terminal sends the 3rd Sounding Reference Signal to the base station on the 3rd bandwidth, wherein, sending the 3rd used bandwidth of the 3rd Sounding Reference Signal comprises the first used bandwidth of transmission first Sounding Reference Signal and sends the second used bandwidth of two Sounding Reference Signal.
6. method as claimed in claim 5 is characterized in that, first, second, third Sounding Reference Signal adopts the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send.
7. as claim 2 or 3 described methods, it is characterized in that the 3rd Sounding Reference Signal average sends at interval greater than average transmissions of first Sounding Reference Signal at interval, and greater than the average transmission interval of second channel detection reference signal; And
User terminal sends the 3rd Sounding Reference Signal to the base station and is specially:
Described user terminal sends the 3rd Sounding Reference Signal to the base station in the four-tape respectively on wide and the 5th bandwidth, wherein, the four-tape sends the first used bandwidth of first Sounding Reference Signal wide comprising, and the 5th bandwidth comprises the second used bandwidth of transmission two Sounding Reference Signal.
8. method as claimed in claim 7, it is characterized in that, also comprise: determine to send simultaneously first moment of first Sounding Reference Signal and the 3rd Sounding Reference Signal, and determine to send simultaneously second moment of second channel detection reference signal and the 3rd Sounding Reference Signal; And
Sending first Sounding Reference Signal is specially:
On first bandwidth, send first Sounding Reference Signal, and suspend the transmission of first Sounding Reference Signal in described first moment; And
Sending the second channel detection reference signal is specially:
On second bandwidth, send the second channel detection reference signal, and suspend the transmission of second channel detection reference signal in described second moment.
9. method as claimed in claim 7 is characterized in that, described user terminal adopts the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send the first, the 3rd Sounding Reference Signal to the base station on first bandwidth; Or
Described user terminal adopts the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send second, third Sounding Reference Signal to the base station on second bandwidth.
10. the method for a receive channel detection reference signal is characterized in that, comprising:
The base station receives first Sounding Reference Signal and the second channel detection reference signal that user terminal sends, wherein, first Sounding Reference Signal is used for pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded for the user terminal utilization, Sounding Reference Signal encoded obtain, second pre-coding matrix is used for pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded for the user terminal utilization, and Sounding Reference Signal is encoded to be obtained.
11. method as claimed in claim 10 is characterized in that, the base station also comprises before receiving first Sounding Reference Signal and second channel detection reference signal of user terminal transmission:
The base station receives the 3rd Sounding Reference Signal that user terminal sends; And
According to the 3rd Sounding Reference Signal, determine first pre-coding matrix; And
Send down channel detection reference signal and the first definite pre-coding matrix to user terminal.
12. method as claimed in claim 10 is characterized in that, the base station also comprises before receiving first Sounding Reference Signal and second channel detection reference signal of user terminal transmission:
The base station receives the 3rd Sounding Reference Signal that user terminal sends; And
According to the 3rd Sounding Reference Signal, determine first, second pre-coding matrix; And
Send first, second pre-coding matrix of determining to user terminal.
13. the device of a transmitting channel detection reference signal is characterized in that, comprising:
The pre-coding matrix determining unit is used to second pre-coding matrix that is identified for first pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded and is used for the Sounding Reference Signal that helps downlink transfer is encoded;
Coding unit, first pre-coding matrix, second pre-coding matrix that are used to utilize the pre-coding matrix determining unit to determine are encoded to Sounding Reference Signal respectively and are obtained first Sounding Reference Signal, second channel detection reference signal;
Transmitting element is used for sending first Sounding Reference Signal and the second channel detection reference signal that coding unit obtains to the base station.
14. device as claimed in claim 13 is characterized in that, described pre-coding matrix determining unit specifically comprises:
Sending module is used for sending the 3rd Sounding Reference Signal to the base station; And
Receiver module is used to receive the first pre-coding matrix information of being determined and sending according to the 3rd Sounding Reference Signal of sending module transmission by the base station, and receives the down channel detection reference signal that the base station sends;
Determination module is used for determining first pre-coding matrix according to the first pre-coding matrix information that receiver module receives, and determines second pre-coding matrix according to the down channel detection reference signal that receiver module receives.
15. device as claimed in claim 13 is characterized in that, described pre-coding matrix determining unit specifically comprises:
Sending module is used for sending the 3rd Sounding Reference Signal to the base station;
Receiver module is used to receive the first pre-coding matrix information and the second pre-coding matrix information of being determined and sending according to the 3rd Sounding Reference Signal of sending module transmission by the base station;
Determination module is used for the first pre-coding matrix information and the second pre-coding matrix information according to the receiver module reception, determines first pre-coding matrix and second pre-coding matrix respectively.
16., it is characterized in that the 3rd Sounding Reference Signal average sends at interval greater than average transmissions of first Sounding Reference Signal at interval as claim 14 or 15 described devices, and greater than the average transmission interval of second channel detection reference signal; And
Described sending module specifically is used for sending the 3rd Sounding Reference Signal to the base station on the 3rd bandwidth, wherein, sending the 3rd used bandwidth of the 3rd Sounding Reference Signal comprises the first used bandwidth of transmission first Sounding Reference Signal and sends the second used bandwidth of two Sounding Reference Signal.
17., it is characterized in that the 3rd Sounding Reference Signal average sends at interval greater than average transmissions of first Sounding Reference Signal at interval as claim 14 or 15 described devices, and greater than the average transmission interval of second channel detection reference signal; And
Described sending module specifically is used for sending the 3rd Sounding Reference Signal to the base station in the four-tape respectively on wide and the 5th bandwidth, wherein, the four-tape sends the first used bandwidth of first Sounding Reference Signal wide comprising, and the 5th bandwidth comprises the second used bandwidth of transmission second channel detection reference signal.
18. device as claimed in claim 17 is characterized in that, also comprises:
Determining unit is used for determining to send simultaneously first moment of first Sounding Reference Signal and the 3rd Sounding Reference Signal constantly, and determines to send simultaneously second moment of second channel detection reference signal and the 3rd Sounding Reference Signal; And described transmitting element specifically comprises:
First sending module is used for sending first Sounding Reference Signal on first bandwidth, and suspends the transmission of first Sounding Reference Signal in first moment that moment determining unit is determined;
Second sending module is used for sending the second channel detection reference signal on second bandwidth, and suspends the transmission of second channel detection reference signal in second moment that moment determining unit is determined.
19. the device of a receive channel detection reference signal is characterized in that, comprising:
First receiving element, be used to receive first Sounding Reference Signal that user terminal sends, wherein, first Sounding Reference Signal is used for pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded for the user terminal utilization, and Sounding Reference Signal is encoded to be obtained;
Second receiving element, be used to receive the second channel detection reference signal that user terminal sends, wherein, the second channel detection reference signal is used for pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded for the user terminal utilization, and Sounding Reference Signal is encoded to be obtained.
20. device as claimed in claim 19 is characterized in that, also comprises:
The 3rd receiving element is used for receiving the 3rd Sounding Reference Signal that user terminal sends before first receiving element receives first Sounding Reference Signal and second receiving element reception second channel detection reference signal;
The pre-coding matrix determining unit is used for determining first pre-coding matrix according to the 3rd Sounding Reference Signal that the 3rd receiving element receives;
Transmitting element is used for sending down channel detection reference signal and the first definite pre-coding matrix of pre-coding matrix determining unit to user terminal.
21. device as claimed in claim 19 is characterized in that, also comprises:
The 3rd receiving element is used for receiving the 3rd Sounding Reference Signal that user terminal sends before first receiving element receives first Sounding Reference Signal and second receiving element reception second channel detection reference signal;
The pre-coding matrix determining unit is used for determining first, second pre-coding matrix according to the 3rd Sounding Reference Signal that the 3rd receiving element receives;
Transmitting element is used for sending first, second pre-coding matrix that the pre-coding matrix determining unit is determined to user terminal.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010175328.9A CN102244557B (en) | 2010-05-12 | 2010-05-12 | Method and device for transmitting and receiving channel sounding reference signals |
| PCT/CN2011/073053 WO2011131127A1 (en) | 2010-04-20 | 2011-04-20 | Method, apparatus and system for sending and receiving sounding reference signal |
| US13/641,884 US8917687B2 (en) | 2010-04-20 | 2011-04-20 | Method, apparatus and system for sending and receiving sounding reference signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010175328.9A CN102244557B (en) | 2010-05-12 | 2010-05-12 | Method and device for transmitting and receiving channel sounding reference signals |
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| CN102244557A true CN102244557A (en) | 2011-11-16 |
| CN102244557B CN102244557B (en) | 2014-06-11 |
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| CN201010175328.9A Expired - Fee Related CN102244557B (en) | 2010-04-20 | 2010-05-12 | Method and device for transmitting and receiving channel sounding reference signals |
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