CN102244557B - 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 a kind of method and device of send and receive Sounding Reference Signal.
Background technology
At Long Term Evolution (LTE, Long Term Evolution) in system, in order to realize up frequency domain dispatching, user terminal (UE, User Equipment) except sending demodulated reference signal in the data transfer bandwidth of this UE self, also need to be in than the larger broadband of this data transfer bandwidth transmitting channel detection reference signal (SRS, Sounding Reference Signal) so that channel is surveyed, thus realize the object that helps base station UE to be carried out to uplink transmission resource distribution.
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 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 is likely distributed on subband relatively far apart, therefore in order to support user to dispatch and up precoding (precoding), UE need to send SRS so that channel is surveyed under larger bandwidth, thereby can further strengthen the demand to SRS time-frequency code resource, and increase can directly cause up expense (overhead) significantly to increase to SRS time-frequency code demand, reduce uplink spectrum efficiency.
At present existing program is proposed to adopt SRS transmission means based on precoding to be reduced in and in larger bandwidth, is sent the demand of SRS to time-frequency code resource, first for uplink multi-users scheduling allocating pre-coding matrix, the pre-coding matrix of recycling configuration is encoded and is processed rear transmission SRS.But, adopt the same pre-coding matrix of employing providing in prior art encode and on channel, transmit to realize the scheme that channel response value is estimated the SRS that helps uplink, downlink transfer, cannot help communication system to realize the up and downlink transfer of better performances simultaneously.
Summary of the invention
The invention provides a kind of method and device of send and receive Sounding Reference Signal, in order in reducing the required time-frequency code resource of transmission SRS, help communication system to realize the up and downlink transfer of better performances.
The present invention is by the following technical solutions:
A method for transmitting channel detection reference signal, comprising:
User terminal is identified for helping the first pre-coding matrix that the Sounding Reference Signal of uplink encodes and the second pre-coding matrix for the Sounding Reference Signal that helps downlink transfer is encoded; And utilize the first pre-coding matrix, the second pre-coding matrix, respectively Sounding Reference Signal is encoded and obtained the first Sounding Reference Signal, second channel detection reference signal; And send the first Sounding Reference Signal and second channel detection reference signal to base station;
Wherein, determine that the first precoding and the second pre-coding matrix specifically comprise:
User terminal sends the 3rd Sounding Reference Signal to base station; And
Receive the first pre-coding matrix information of determining and send according to the 3rd Sounding Reference Signal by base station, determine the first pre-coding matrix according to the first pre-coding matrix information;
And the down channel detection reference signal sending according to base station, determine the second pre-coding matrix; Or
Determine that the first pre-coding matrix and the second pre-coding matrix specifically comprise:
User terminal sends the 3rd Sounding Reference Signal to base station; And
Receive the first pre-coding matrix information and the second pre-coding matrix information determining according to the 3rd Sounding Reference Signal and send by base station;
According to the first pre-coding matrix information and the second pre-coding matrix information, determine respectively the first pre-coding matrix and the second pre-coding matrix.
A method for receive channel detection reference signal, comprising:
Base station receives the first Sounding Reference Signal and the second channel detection reference signal that user terminal sends, wherein, the first Sounding Reference Signal is the pre-coding matrix of user terminal utilization for the Sounding Reference Signal that helps uplink is encoded, Sounding Reference Signal is encoded and obtained, second channel detection reference signal is user terminal utilization for the pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded, and Sounding Reference Signal is encoded and obtained;
Wherein, base station receives before first Sounding Reference Signal and second channel detection reference signal of user terminal transmission, also comprises: base station receives the 3rd Sounding Reference Signal that user terminal sends; And according to the 3rd Sounding Reference Signal, determine the first pre-coding matrix; And the first pre-coding matrix that sends the down channel detection reference signal for determining the second pre-coding matrix and determine to user terminal; Or
Base station receives before first Sounding Reference Signal and second channel detection reference signal of user terminal transmission, also comprises: 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 definite pre-coding matrix to user terminal.
A device for transmitting channel detection reference signal, comprising:
Pre-coding matrix determining unit, first pre-coding matrix of encoding for the Sounding Reference Signal being identified for helping uplink and the second pre-coding matrix for the Sounding Reference Signal that helps downlink transfer is encoded; Coding unit, for the first pre-coding matrix, the second pre-coding matrix that utilize pre-coding matrix determining unit to determine, encodes and obtains the first Sounding Reference Signal, second channel detection reference signal Sounding Reference Signal respectively; Transmitting element, for sending the first Sounding Reference Signal and the second channel detection reference signal that coding unit obtains to base station; Wherein, described pre-coding matrix determining unit specifically comprises:
Sending module, for sending the 3rd Sounding Reference Signal to base station; And receiver module, for receiving the first pre-coding matrix information of determining and send according to the 3rd Sounding Reference Signal of sending module transmission by base station, and receive the down channel detection reference signal that base station sends; Determination module, determines the first pre-coding matrix for the first pre-coding matrix information receiving according to receiver module, and the down channel detection reference signal receiving according to receiver module is determined the second pre-coding matrix; Or described pre-coding matrix determining unit specifically comprises: sending module, for send the 3rd Sounding Reference Signal to base station; Receiver module, for receiving the first pre-coding matrix information and the second pre-coding matrix information being determined and send according to the 3rd Sounding Reference Signal of sending module transmission by base station; Determination module, for the first pre-coding matrix information and the second pre-coding matrix information that receive according to receiver module, determines respectively the first pre-coding matrix and the second pre-coding matrix.
A kind of device of receive channel detection reference signal, comprise: the first receiving element, the first Sounding Reference Signal sending for receiving user terminal, wherein, the first Sounding Reference Signal is user terminal utilization for the first pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded, and Sounding Reference Signal is encoded and obtained; The second receiving element, the second channel detection reference signal sending for receiving user terminal, wherein, second channel detection reference signal is user terminal utilization for the second pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded, and Sounding Reference Signal is encoded and obtained;
Described device also comprises:
The 3rd receiving element, receives before second channel detection reference signal for receive the first Sounding Reference Signal and the second receiving element at the first receiving element, receives the 3rd Sounding Reference Signal that user terminal sends; Pre-coding matrix determining unit, determines the first pre-coding matrix for the 3rd Sounding Reference Signal receiving according to the 3rd receiving element; Transmitting element, for sending down channel detection reference signal and the first definite pre-coding matrix of pre-coding matrix determining unit for determining the second pre-coding matrix to user terminal; Or
Described device also comprises: the 3rd receiving element, receive before second channel detection reference signal for receive the first Sounding Reference Signal and the second receiving element at the first receiving element, and receive the 3rd Sounding Reference Signal that user terminal sends; Pre-coding matrix determining unit, determines first, second pre-coding matrix for the 3rd Sounding Reference Signal receiving according to the 3rd receiving element; Transmitting element, for sending to user terminal first, second pre-coding matrix that pre-coding matrix determining unit is determined.
Beneficial effect of the present invention is as follows: the scheme that the embodiment of the present invention provides is by first pre-coding matrix of determining of the Sounding Reference Signal for helping uplink, and be definite the second pre-coding matrix that helps the Sounding Reference Signal of downlink transfer, utilize the first pre-coding matrix, the second pre-coding matrix, respectively Sounding Reference Signal is encoded and obtained the first Sounding Reference Signal, after second channel detection reference signal, send out the first Sounding Reference Signal and second channel detection reference signal to base station, thereby can realize respectively for helping the SRS of uplink and the SRS allocating pre-coding matrix of help downlink transfer, therefore in reducing the required time-frequency code resource of transmission SRS, the scheme providing in prior art has been provided adopts same pre-coding matrix to helping uplink, the SRS of downlink transfer encodes and on channel, transmits to realize channel response value is estimated, cannot help communication system to realize the problem of the up and downlink transfer of better performances simultaneously.
Brief description of the 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 present invention;
Fig. 2 is the schematic diagram that sends a kind of situation of first, second, third SRS in the embodiment of the present 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 present 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 present invention.
Embodiment
According to LTE-TDD system considerable advantage---channel reciprocity, SRS not only can be with helping uplink, and the while also can be with helping downlink transfer.But in the prior art, general is only for the SRS allocating pre-coding matrix that helps uplink, and is that the SRS not being suitable for helping downlink transfer encodes for the SRS allocating pre-coding matrix that helps uplink.Therefore, help the pre-coding matrix of the SRS configuration of uplink to encode to the SRS that helps downlink transfer if be adopted as, can make base station not accurate enough according to the channel response estimated value that helps the SRS of downlink transfer to obtain.Visible, the scheme of employing prior art cannot help communication system to realize the up and downlink transfer of better performances simultaneously.And in the scheme of the send and receive SRS providing in the embodiment of the present invention, by being respectively the SRS allocating pre-coding matrix that helps uplink, simultaneously for the SRS that helps downlink transfer configures other pre-coding matrix, make without sharing again an identical pre-coding matrix, the SRS that helps uplink to be encoded with the SRS that helps downlink transfer, but can utilize respectively mutually different pre-coding matrix respectively the SRS that helps uplink to be encoded with the SRS that helps downlink transfer, thereby realize in reducing the required time-frequency code resource of transmission SRS, help communication system to realize the up and downlink transfer of better performances.
First, the embodiment of the present invention provides the method for SRS of transmission a kind of, and the idiographic flow schematic diagram of the method as shown in Figure 1, comprises the following steps:
Provide such scheme known according to the embodiment of the present invention, help SRS up, downlink transfer to configure respectively pre-coding matrix owing to being respectively, thereby when helping the SRS of downlink transfer to carry out precoding, without the only pre-coding matrix of recycling SRS up to helping, downlink transfer the processing of encoding.Thereby adopt the scheme that the embodiment of the present invention provides in utilizing pre-coding matrix SRS to be encoded to reduce the required time-frequency code resource of transmission SRS, to help communication system to realize the up and downlink transfer of better performances.
For above-mentioned steps 11, in embodiments of the present invention, can adopt various ways to determine the first pre-coding matrix and the second pre-coding matrix, such as, user terminal can be by sending the mode of SRS to base station, the first pre-coding matrix and the second pre-coding matrix are determined in cause base station.Particularly, user terminal can send Three S's RS to base station, and receive the first pre-coding matrix information and the second pre-coding matrix information being determined according to Three S's RS by base station and send, thereby can be according to the first pre-coding matrix information and the second pre-coding matrix information, determine respectively the first pre-coding matrix and the second pre-coding matrix, in general the Three S's RS here can, for not carrying out the SRS of precoding processing, be Non-precoded SRS.In addition, the first pre-coding matrix information here can comprise that the information etc. of the order of the first pre-coding matrix can be used for determining the information of the first pre-coding matrix; Similarly, the second pre-coding matrix information can also comprise the information of the order of the second pre-coding matrix etc.Or, user terminal also can be only for determining the first pre-coding matrix to the mode of base station transmission SRS, the second pre-coding matrix can adopt base station to determine the mode of the first pre-coding matrix according to SRS, the descending SRS being sent according to base station by user terminal self, really fix and determine according to the second predetermined pre-coding matrix, such as, in order to determine first, the second pre-coding matrix, user terminal can send Three S's RS to base station, and receive the first pre-coding matrix information that base station is determined according to Three S's RS and sent, simultaneously, receive the descending SRS that send base station, thereby user terminal just can be determined the first pre-coding matrix according to the first pre-coding matrix information receiving, and determines the second pre-coding matrix according to the descending SRS receiving.In addition the descending SRS that, user terminal can also send according to base station determines the first pre-coding matrix and the second pre-coding matrix.
In embodiments of the present invention, the average transmission interval of Three S's RS can be greater than the average transmission interval of a SRS, be greater than the average transmission interval of the 2nd SRS simultaneously, to ensure that the Three S's RS sending can not take too many system resource, meanwhile, sending Three S's RS bandwidth used can comprise transmission the one SRS the first bandwidth used and send the 2nd SRS the second bandwidth used.Particularly, in the 3rd bandwidth, send Three S's RS with the large average interval that sends, and in the first bandwidth and the second bandwidth, send respectively the schematic diagram of first and second SRS with less average transmission interval can be with reference to accompanying drawing 2.In the described transmission situation of accompanying drawing 2, a SRS with
represent, the 2nd SRS with
represent, Three S's RS with
represent, in accompanying drawing 2, first, second, third SRS is periodically transmission, in fact, in first, second, third SRS, also can only have a SRS periodically to send, and other SRS are receiving sending to base station after notifying the message that sends SRS of base station transmission by user terminal, or, in first, second, third SRS, can have two SRS periodically to send, and another SRS send after receiving above-mentioned message by user terminal to base station.
In embodiments of the present invention, the bandwidth that sends Three S's RS can also be split as to 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 respectively Three S's RS in wide and the 5th bandwidth, wherein, the four-tape sends a SRS the first bandwidth used wide can comprising, the 5th bandwidth can comprise transmission the 2nd SRS the second bandwidth used, it should be noted that, the process that sends respectively Three S's RS in and the 5th bandwidth wide in the four-tape can be separate, is independent of each other.
In and the 5th bandwidth wide in the above-mentioned four-tape, send in the process of Three S's RS respectively, overlap with the process of the 2nd SRS with transmission the one SRS if find, can overlap time engrave the transmission that suspends SRS that precoding is obtained, such as, can first determine first moment that will simultaneously send a SRS and Three S's RS, and determine second moment that will simultaneously send the 2nd SRS and Three S's RS; While sending a SRS in the first bandwidth, can suspend the transmission to a SRS in the first moment of determining, and within first o'clock, engrave and only Three S's RS is sent at this, and send the 2nd SRS in the second bandwidth time, can suspend the transmission to the 2nd SRS in the second moment of determining.Except SRS being suspended the mode sending, in the embodiment of the present invention, user terminal can also be in the first bandwidth, adopts the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send a SRS, Three S's RS to base station; Or in the 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 base station.
Below with the embodiment of the present invention provide such scheme in practice be applied as example, utilize multiple 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 sending in subprocess one is used for assisting multi-subscriber dispatching, and helps to determine required SRS pre-coding matrix or the order number of pre-coding matrix etc. in other two subprocess; In subprocess two, send the up Adaptive Transmission of SRS for help system, for example, for determining pre-coding matrix required when up Adaptive Transmission etc.; The SRS sending in subprocess three is for the descending self-adapting transmission of help system, for example determine precoding/wave beam formed matrix required when descending self-adapting transmits etc., reduce in order to reach the object that sends the required time-frequency code resource of SRS, the SRS sending in subprocess two, three passes through corresponding precoding processing before transmission.The work that cooperatively interacts of above three subprocess, completes the whole SRS transfer function based on precoding.It should be noted that, in the embodiment of the present invention, also can by UE self determine subprocess two, three send pre-coding matrix required when SRS (such as, the descending SRS that can send according to base station determines that subprocess two, three is at transmission required pre-coding matrix when SRS), therefore known, in embodiments of the present invention, subprocess one also can be implemented in practice.
Embodiment mono-:
The process that sends SRS in embodiment mono-comprises below 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 is without directly sending through pre-coding matrix coding, therefore the SRS sending is in this course Non-precoded SRS, the channel information obtaining based on this Non-precodedSRS can be with helping determine required pre-coding matrix information in SRS_UL, in this subprocess SRS_0, UE can be periodic to the transmission of SRS, also can be acyclic, can also be to receive just sending again after notifying UE to send the notification message of SRS that base station sends, base station is receiving after the Non-precoded SRS sending in subprocess SRS_0, can determine the first pre-coding matrix information required while sending SRS in subprocess SRS_UL according to this Non-precoded SRS, and required the second pre-coding matrix information while sending SRS in definite subprocess SRS_DL, and by determine first, the second pre-coding matrix information sends to UE,
SRS_UL: in this course, send the demand of SRS to system resource in order to reduce, UE need to determine pre-coding matrix according to the first pre-coding matrix information of base station notice, and again the SRS after coding is sent after utilizing this first pre-coding matrix to encode to SRS, and base station is after the SRS receiving after the coding sending in this subprocess SRS_UL, be mainly used in the up Adaptive Transmission such as uplink pre-coding matrix selection, multi-subscriber dispatching based on the estimated channel information obtaining of this SRS;
SRS_DL: in this course, send the demand of SRS to system resource in order to reduce, UE sends the SRS after coding after also needing to utilize the second pre-coding matrix of base station notice to encode to SRS signal again, in this embodiment mono-, the required pre-coding matrix information of this SRS_DL process is except can being notified by base station, can also be self-determining by UE, such as, the descending SRS that UE can send according to base station determines a pre-coding matrix, it should be noted that, the estimated channel information obtaining of SRS sending based on this SRS_DL is mainly used in helping descending self-adapting transmission.
In above-mentioned any one subprocess, sending the required relevant parameter of SRS can realize by configuring, such as: periodically or aperiodicity sends SRS, the transmission Cycle Length while periodically sending SRS, single-carrier frequency division multiple access (SC-FDMA) character position at SRS place etc.
(from the angle of transfer resource) to a certain extent, above-mentioned three subprocess can be regarded as to three independently processes of " Virtual User " transmission SRS, but these three subprocess might not be completely independently, they can have certain contact each other, such as, the SRS transmission bandwidth that SRS_0 is corresponding can comprise the SRS transmission bandwidth of other two subprocess; The pre-coding matrix information (such as being the order of pre-coding matrix) that the SRS of SRS_UL and SRS_DL adopts can be notified by base station, thereby and base station utilizes the SRS of SRS_0 transmission to carry out estimating channel information to determine the order of this pre-coding matrix often; The pre-coding matrix that SRS in SRS_UL adopts can be also that base station is determined by PMI, thereby and can be also the SRS transmitting by SRS_0 carry out definite this pre-coding matrix of estimating channel information in base station; In addition, with respect to other two subprocess, in SRS_0, the average transmission time interval of SRS can be longer, like this to ensure that sending SRS in SRS_0 process can not take too many resource.
According to above-mentioned analysis, the SRS transmission of above-mentioned three subprocess can be regarded the SRS transmission of three " Virtual User " to a certain extent as, and therefore 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 different SC-FDMA symbols;
Frequency division multiplexing: SRS_UL is with different for the subcarrier of transmitting SRS in SRS_DL subprocess, such as, can be on different broach, or on different subbands;
Code division multiplexing: the SRS transmission of three subprocess adopts different SRS sequences, and different SRS sequences is orthogonal or accurate orthogonal each other;
In addition, can also adopt the hybrid mode of above-mentioned three kinds of modes to transmit SRS, such as, in the SRS in three subprocess, can have any two SRS is that mode based on time-division/frequency division/code division multiplexing is transmitted.
Embodiment bis-:
In embodiment bis-, 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-described embodiment one, do not repeat them here, and SRS_0 in embodiment mono-obtains SRS_0_UL and SRS_0_DL after being divided into two parts, it is corresponding SRS_UL and SRS_DL subprocess respectively, it should be noted that, in SRS_0_UL and SRS_0_DL, send the process of SRS and the SRS role of transmission and embodiment mono-similar, difference is only: the bandwidth that sends SRS in SRS_0_UL only need to comprise the bandwidth that sends SRS in SRS_UL, the bandwidth that simultaneously sends SRS in SRS_0_DL only need to comprise the bandwidth that sends SRS in SRS_DL.
Similar with embodiment mono-, from the angle of transfer resource, four subprocess of embodiment bis-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 tri-:
In embodiment tri-, SRS_0 subprocess in embodiment mono-can be fused in SRS_UL subprocess, such as, in SRS_UL subprocess, the precoding that the SRS on some SC-FDMA character position can be adopted has realized Non-precoded SRS transmission since selecting specific form, thereby the SRS on those SC-FDMA character positions just can regard the Non-precoded SRS that originally need to send at SRS_0 as.It should be noted that, can be carry out property performance period and choose by the semi-static configuration of system above-mentioned for sending the SC-FDMA symbol of Non-precoded SRS, or also can adopt acyclic mode, above-mentioned for sending the SC-FDMA symbol of Non-precoded SRS by notifying UE to choose to the mode of UE transmission signaling by base station.The scheme that SRS_0 subprocess is fused to SRS_UL subprocess proposing for embodiment tri-, the situation that adopts two transmitting antennas for UE, can adopt the following fusion that realizes SRS_0 and SRS_UL of sending:
Wherein SRS_UL represents the normal transmission of the SRS_UL subprocess in scheme one;
With
Represent respectively to adopt in SRS_UL subprocess
With
As the pre-coding matrix of SRS;
Similarly, the SRS_0 subprocess in embodiment mono-also can be fused in SRS_DL subprocess, or is fused in SRS_UL and two subprocess of SRS_DL simultaneously, and its implementation procedure and above-mentionedly SRS_0 is fused in SRS_UL similar repeats no more.
Embodiment tetra-:
In embodiment tetra-, with in embodiment tri-, SRS_0 is fused in SRS_UL or in SRS_DL similar, SRS_0_UL in embodiment bis-and SRS_0_DL subprocess can be fused to respectively in SRS_UL and SRS_DL, implementation procedure in the implementation procedure of specific embodiment four and embodiment tri-is similar, does not repeat them here.
Correspondingly, the embodiment of the present invention also provides the method for SRS of reception a kind of, the method is: base station receives a SRS and the 2nd SRS that user terminal sends, wherein, wherein, a SRS is user terminal utilization for the pre-coding matrix that the SRS that helps uplink is encoded, and SRS is encoded and obtained, the second pre-coding matrix is user terminal utilization for the pre-coding matrix that the SRS that helps downlink transfer is encoded, and SRS is encoded and obtained.
The method of the transmission SRS providing corresponding to the embodiment of the present invention, the embodiment of the present invention provides in the method that receives SRS, base station can also provide first, second pre-coding matrix to user terminal, and particularly, base station can adopt following two kinds of modes to determine pre-coding matrix:
First kind of way:
Base station can receive the Three S's RS that user terminal sends, thereby according to Three S's RS, determines the first pre-coding matrix, and the first pre-coding matrix that sends descending SRS and determine to user terminal.
The second way:
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 to user terminal first, second pre-coding matrix of determining.
The method of the transmission SRS providing corresponding to the embodiment of the present invention, the embodiment of the present invention also provides the device of a kind of SRS of transmission, and the concrete structure schematic diagram of this device as shown in Figure 3, comprises following functions unit:
Pre-coding matrix determining unit 31, first pre-coding matrix of encoding for the SRS being identified for helping uplink and the second pre-coding matrix for the SRS that helps downlink transfer is encoded;
Transmitting element 33, for sending a SRS, the 2nd SRS that coding unit 32 obtains to base station.
In embodiments of the present invention, corresponding to two kinds of modes determining the first pre-coding matrix and the second pre-coding matrix, can also carry out Further Division to pre-coding matrix determining unit 31, preferably, pre-coding matrix determining unit 31 can be divided into following functions module, comprise:
Sending module, for sending Three S's RS to base station; Receiver module, for receiving the first pre-coding matrix information of being determined and send according to the Three S's RS of sending module transmission by base station, and receives the descending SRS that base station sends; Determination module, for the first pre-coding matrix information receiving according to receiver module, determines the first pre-coding matrix, and the descending SRS receiving according to receiver module, determines the second pre-coding matrix.
Or, also pre-coding matrix determining unit 31 can be divided into following functions module:
Sending module, for sending Three S's RS to base station; Receiver module, for receiving the first pre-coding matrix information and the second pre-coding matrix information being determined and send according to the Three S's RS of sending module transmission by base station; Determination module, for the first pre-coding matrix information and the second pre-coding matrix information that receive according to receiver module, determines respectively the first pre-coding matrix and the second pre-coding matrix.
Demand to time-frequency code resource when reducing to send Three S's RS, in embodiments of the present invention, the average transmission interval of Three S's RS can be greater than the average transmission interval of a SRS, and be greater than the average transmission interval of the 2nd SRS, now, above-mentioned sending module can, specifically for send Three S's RS to base station in the 3rd bandwidth, wherein, send Three S's RS the 3rd bandwidth used and comprise transmission the one SRS the first bandwidth used and send the 2nd SRS the second bandwidth used.
Or sending module can also be specifically for sending respectively Three S's RS to base station in and the 5th bandwidth wide in the four-tape, wherein, the four-tape sends a SRS the first bandwidth used wide comprising, and the 5th bandwidth comprises transmission the 2nd SRS the second bandwidth used.
In addition, the embodiment of the present invention also provides the device of a kind of SRS of reception, in order in 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 as shown in Figure 4, comprises following functions unit:
The first receiving element 41, a SRS who sends for receiving user terminal, wherein, a SRS is that user terminal utilization is encoded and obtained SRS for the pre-coding matrix that the SRS that helps uplink is encoded;
The second receiving element 42, the 2nd SRS sending for receiving user terminal, the 2nd SRS is that user terminal utilization is encoded and obtained SRS for the pre-coding matrix that the SRS that helps downlink transfer is encoded.
Preferably, the device of the above-mentioned reception SRS that the embodiment of the present invention provides can further include:
The 3rd receiving element, for receiving the first Sounding Reference Signal at the first receiving element 41 and the second receiving element 42 receives before second channel detection reference signal, receives the Three S's RS that user terminal sends; Pre-coding matrix determining unit, for the Three S's RS receiving according to the 3rd receiving element, determines the first pre-coding matrix; Transmitting element, the first pre-coding matrix from pre-coding matrix determining unit to user terminal that determine for send descending SRS and.
Or the device of the above-mentioned reception SRS that the embodiment of the present invention provides also may further include:
The 3rd receiving element, for receiving the first Sounding Reference Signal at the first receiving element 41 and the second receiving element 42 receives before second channel detection reference signal, receives the Three S's RS that user terminal sends; Pre-coding matrix determining unit, for the Three S's RS receiving according to the second receiving element, determines first, second pre-coding matrix; Transmitting element, for sending to user terminal first, second pre-coding matrix that pre-coding matrix determining unit is determined.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (13)
1. a method for transmitting channel detection reference signal, is characterized in that, comprising:
User terminal is identified for helping the first pre-coding matrix that the Sounding Reference Signal of uplink encodes and the second pre-coding matrix for the Sounding Reference Signal that helps downlink transfer is encoded; And
Utilize the first pre-coding matrix, the second pre-coding matrix respectively Sounding Reference Signal to be encoded, obtain the first Sounding Reference Signal, second channel detection reference signal; And
Send the first Sounding Reference Signal and second channel detection reference signal to base station;
Wherein, determine that the first pre-coding matrix and the second pre-coding matrix specifically comprise:
User terminal sends the 3rd Sounding Reference Signal to base station; And
Receive the first pre-coding matrix information of determining and send according to the 3rd Sounding Reference Signal by base station, determine the first pre-coding matrix according to the first pre-coding matrix information;
And the down channel detection reference signal sending according to base station, determine the second pre-coding matrix; Or
Determine that the first pre-coding matrix and the second pre-coding matrix specifically comprise:
User terminal sends the 3rd Sounding Reference Signal to base station; And
Receive the first pre-coding matrix information and the second pre-coding matrix information determining according to the 3rd Sounding Reference Signal and send by base station;
According to the first pre-coding matrix information and the second pre-coding matrix information, determine respectively the first pre-coding matrix and the second pre-coding matrix.
2. the method for claim 1, it is characterized in that, first, second, third Sounding Reference Signal is receiving by user terminal sending to base station after notifying the message of transmitting channel detection reference signal that base station sends, or is periodically sent to base station by user terminal.
3. the method for claim 1, is characterized in that, the average transmission interval of the 3rd Sounding Reference Signal is greater than the average transmission interval of the first Sounding Reference Signal, and is greater than the average transmission interval of second channel detection reference signal; And
User terminal sends the 3rd Sounding Reference Signal and is specially to base station:
User terminal sends the 3rd Sounding Reference Signal in the 3rd bandwidth to base station, wherein, sending the 3rd Sounding Reference Signal the 3rd bandwidth used comprises transmission the first Sounding Reference Signal the first bandwidth used and sends second channel detection reference signal the second bandwidth used.
4. method as claimed in claim 3, 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.
5. the method for claim 1, is characterized in that, the average transmission interval of the 3rd Sounding Reference Signal is greater than the average transmission interval of the first Sounding Reference Signal, and is greater than the average transmission interval of second channel detection reference signal; And
User terminal sends the 3rd Sounding Reference Signal and is specially to base station:
Described user terminal sends respectively the 3rd Sounding Reference Signal to base station in wide and the 5th bandwidth in the four-tape, wherein, the four-tape sends the first Sounding Reference Signal the first bandwidth used wide comprising, and the 5th bandwidth comprises transmission second channel detection reference signal the second bandwidth used.
6. method as claimed in claim 5, it is characterized in that, also comprise: determine first moment that will simultaneously send the first Sounding Reference Signal and the 3rd Sounding Reference Signal, and determine second moment that will simultaneously send second channel detection reference signal and the 3rd Sounding Reference Signal; And
Sending the first Sounding Reference Signal is specially:
In the first bandwidth, send the first Sounding Reference Signal, and suspend the transmission of the first Sounding Reference Signal in described the first moment; And
Sending second channel detection reference signal is specially:
In the second bandwidth, send second channel detection reference signal, and suspend the transmission of second channel detection reference signal in described the second moment.
7. method as claimed in claim 5, is characterized in that, described user terminal, in the first bandwidth, adopts the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to base station transmission first, the 3rd Sounding Reference Signal; Or
Described user terminal, in the second bandwidth, adopts the mode of time division multiplexing or frequency division multiplexing or code division multiplexing to send second, third Sounding Reference Signal to base station.
8. a method for receive channel detection reference signal, is characterized in that, comprising:
Base station receives the first Sounding Reference Signal and the second channel detection reference signal that user terminal sends, wherein, the first Sounding Reference Signal is the pre-coding matrix of user terminal utilization for the Sounding Reference Signal that helps uplink is encoded, Sounding Reference Signal is encoded and obtained, second channel detection reference signal is user terminal utilization for the pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded, and Sounding Reference Signal is encoded and obtained;
Wherein, base station receives before first Sounding Reference Signal and second channel detection reference signal of user terminal transmission, also comprises:
Base station receives the 3rd Sounding Reference Signal that user terminal sends; And
According to the 3rd Sounding Reference Signal, determine the first pre-coding matrix; And
The first pre-coding matrix that sends the down channel detection reference signal for determining the second pre-coding matrix and determine to user terminal; Or
Base station receives before first Sounding Reference Signal and second channel detection reference signal of user terminal transmission, also comprises:
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.
9. a device for transmitting channel detection reference signal, is characterized in that, comprising:
Pre-coding matrix determining unit, first pre-coding matrix of encoding for the Sounding Reference Signal being identified for helping uplink and the second pre-coding matrix for the Sounding Reference Signal that helps downlink transfer is encoded;
Coding unit, for the first pre-coding matrix, the second pre-coding matrix that utilize pre-coding matrix determining unit to determine, encodes and obtains the first Sounding Reference Signal, second channel detection reference signal Sounding Reference Signal respectively;
Transmitting element, for sending the first Sounding Reference Signal and the second channel detection reference signal that coding unit obtains to base station;
Wherein, described pre-coding matrix determining unit specifically comprises:
Sending module, for sending the 3rd Sounding Reference Signal to base station; And
Receiver module, for receiving the first pre-coding matrix information of being determined and send according to the 3rd Sounding Reference Signal of sending module transmission by base station, and receives the down channel detection reference signal that base station sends;
Determination module, determines the first pre-coding matrix for the first pre-coding matrix information receiving according to receiver module, and the down channel detection reference signal receiving according to receiver module is determined the second pre-coding matrix; Or described pre-coding matrix determining unit specifically comprises:
Sending module, for sending the 3rd Sounding Reference Signal to base station;
Receiver module, for receiving the first pre-coding matrix information and the second pre-coding matrix information being determined and send according to the 3rd Sounding Reference Signal of sending module transmission by base station;
Determination module, for the first pre-coding matrix information and the second pre-coding matrix information that receive according to receiver module, determines respectively the first pre-coding matrix and the second pre-coding matrix.
10. device as claimed in claim 9, is characterized in that, the average transmission interval of the 3rd Sounding Reference Signal is greater than the average transmission interval of the first Sounding Reference Signal, and is greater than the average transmission interval of second channel detection reference signal; And
Described sending module specifically for sending the 3rd Sounding Reference Signal in the 3rd bandwidth to base station, wherein, sending the 3rd Sounding Reference Signal the 3rd bandwidth used comprises transmission the first Sounding Reference Signal the first bandwidth used and sends second channel detection reference signal the second bandwidth used.
11. devices as claimed in claim 9, is characterized in that, the average transmission interval of the 3rd Sounding Reference Signal is greater than the average transmission interval of the first Sounding Reference Signal, and are greater than the average transmission interval of second channel detection reference signal; And
Described sending module is specifically for sending respectively the 3rd Sounding Reference Signal to base station in and the 5th bandwidth wide in the four-tape, wherein, the four-tape sends the first Sounding Reference Signal the first bandwidth used wide comprising, and the 5th bandwidth comprises transmission second channel detection reference signal the second bandwidth used.
12. devices as claimed in claim 11, is characterized in that, also comprise:
Moment determining unit, for determine first moment that will send the first Sounding Reference Signal and the 3rd Sounding Reference Signal simultaneously, and determines second moment that will simultaneously send second channel detection reference signal and the 3rd Sounding Reference Signal; And described transmitting element specifically comprises:
The first sending module, for send the first Sounding Reference Signal in the first bandwidth, and the first moment of determining in moment determining unit suspend the transmission of the first Sounding Reference Signal;
The second sending module, for send second channel detection reference signal in the second bandwidth, and the transmission of the second moment time-out second channel detection reference signal of determining in moment determining unit.
The device of 13. 1 kinds of receive channel detection reference signals, is characterized in that, comprising:
The first receiving element, the first Sounding Reference Signal sending for receiving user terminal, wherein, the first Sounding Reference Signal is user terminal utilization for the first pre-coding matrix that the Sounding Reference Signal that helps uplink is encoded, and Sounding Reference Signal is encoded and obtained;
The second receiving element, the second channel detection reference signal sending for receiving user terminal, wherein, second channel detection reference signal is user terminal utilization for the second pre-coding matrix that the Sounding Reference Signal that helps downlink transfer is encoded, and Sounding Reference Signal is encoded and obtained;
Described device also comprises:
The 3rd receiving element, receives before second channel detection reference signal for receive the first Sounding Reference Signal and the second receiving element at the first receiving element, receives the 3rd Sounding Reference Signal that user terminal sends;
Pre-coding matrix determining unit, determines the first pre-coding matrix for the 3rd Sounding Reference Signal receiving according to the 3rd receiving element;
Transmitting element, for sending down channel detection reference signal and the first definite pre-coding matrix of pre-coding matrix determining unit for determining the second pre-coding matrix to user terminal; Or
Described device also comprises:
The 3rd receiving element, receives before second channel detection reference signal for receive the first Sounding Reference Signal and the second receiving element at the first receiving element, receives the 3rd Sounding Reference Signal that user terminal sends;
Pre-coding matrix determining unit, determines first, second pre-coding matrix for the 3rd Sounding Reference Signal receiving according to the 3rd receiving element;
Transmitting element, for sending to user terminal first, second pre-coding matrix that pre-coding matrix determining unit is determined.
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 |
| US13/641,884 US8917687B2 (en) | 2010-04-20 | 2011-04-20 | Method, apparatus and system for sending and receiving sounding reference signal |
| PCT/CN2011/073053 WO2011131127A1 (en) | 2010-04-20 | 2011-04-20 | Method, apparatus and system for sending and receiving sounding reference signal |
Applications Claiming Priority (1)
| 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 |
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| Publication Number | Publication Date |
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| CN102244557A CN102244557A (en) | 2011-11-16 |
| CN102244557B true CN102244557B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103220101B (en) * | 2012-01-19 | 2018-02-16 | 中兴通讯股份有限公司 | The notice of frequency spectrum comb signaling, the sending method of detection reference signal and device |
| JP6151108B2 (en) * | 2013-06-28 | 2017-06-21 | 株式会社Ｎｔｔドコモ | Radio base station, user terminal, and reference signal transmission method |
| US20170311321A1 (en) * | 2014-09-25 | 2017-10-26 | Ntt Docomo, Inc. | Base station and user equipment |
| US10075271B2 (en) * | 2015-03-14 | 2018-09-11 | Qualcomm Incorporated | Reciprocal channel sounding reference signal allocation and configuration |
| CN106455092B (en) * | 2015-08-13 | 2019-11-22 | 中国移动通信集团公司 | Sending method, device, terminal and the base station of Sounding Reference Signal |
| WO2017156732A1 (en) * | 2016-03-16 | 2017-09-21 | 华为技术有限公司 | Signal transmission method and device |
| CN110176949A (en) * | 2016-08-12 | 2019-08-27 | 华为技术有限公司 | Data transmission method for uplink, signaling method, apparatus and system |
| US10469224B2 (en) * | 2016-09-30 | 2019-11-05 | Qualcomm Incorporated | Joint transmission of precoded and unprecoded sounding reference signals in uplink |
| US11509364B2 (en) * | 2017-03-13 | 2022-11-22 | Qualcomm Incorporated | Techniques and apparatuses for uplink precoder determination using downlink reference signals or downlink precoder determination using uplink reference signals |
| US10594371B2 (en) | 2017-08-11 | 2020-03-17 | Qualcomm Incorporated | Precoding reference signals for uplink transmission with downlink interference information |
| CN108093480B (en) | 2017-09-30 | 2024-02-13 | 中兴通讯股份有限公司 | Signal transmission method and device |
| WO2021223084A1 (en) * | 2020-05-06 | 2021-11-11 | 华为技术有限公司 | Uplink reference signal sending method, uplink reference signal receiving method, and communication device |
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| WO2009023825A2 (en) * | 2007-08-15 | 2009-02-19 | Qualcomm Incorporated | Antenna switching and uplink sounding channel measurement |
| CN101540631A (en) * | 2009-04-27 | 2009-09-23 | 中兴通讯股份有限公司 | Multi-antenna sending method and device for measuring reference signal |
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