CN108631834A - A kind of method and device of the transmitting diversity in multiple antenna communication - Google Patents
A kind of method and device of the transmitting diversity in multiple antenna communication Download PDFInfo
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- CN108631834A CN108631834A CN201710183586.3A CN201710183586A CN108631834A CN 108631834 A CN108631834 A CN 108631834A CN 201710183586 A CN201710183586 A CN 201710183586A CN 108631834 A CN108631834 A CN 108631834A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
Abstract
The present invention provides a kind of method and device of the transmitting diversity in multiple antenna communication, and this method includes：Determine the data information of data to be sent and the transmission subframe of the data to be sent；It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe；Wherein, a precoding sub-block includes at least one the first OFDM symbol occupied by frequency pilot sign；The first OFDM symbol to multiple precoding sub-blocks and the second OFDM symbol occupied by data information carry out pre-encode operation respectively, and the data information after pre-encode operation is sent by the antenna port；The embodiment of the present invention by the OFDM symbol sent in subframe by being divided into multiple precoding sub-blocks, and pre-encode operation is carried out to each precoding sub-block respectively, so that a data to be sent can be Jing Guo multiple precoding processing, to improve the gain of antenna transmitting diversity and precoding.
Description
Technical field
The present invention relates to field of communication technology, particularly relate to a kind of transmitting diversity in multiple antenna communication method and
Device.
Background technology
In LTE Rel-14 V2X technologies, terminal UE includes two kinds of channels, a control letter when transmission data
Road PSCCH is used for transmission Scheduling assistance information (SA, Scheduling Assignment)；Another data channel PSSCH is used
In transmitting data information (Data).Receiving terminal is first by detecting the SA information carried in control channel, to which basis receives
Control information carry out data information reception.
In LTE Rel-14 V2X technologies, there are the patterns of two spike-type cultivars selection：
One is the mode of the spontaneous selection resource of terminal UE, UE passes through the V2X resources in system configuration or pre-configuration
Pass through the resource of the method choice of perception free time in pond；Another kind is the resource selection method of base station auxiliary, when vehicle is in network
Situation in covering, base station can be scheduled V2V communications by down control channel (PDCCH/EPDCCH), in this feelings
Under condition, base station indicates that transmission vehicle sends the resource location of SA and Data by sending V2V grant (V2V authorization messages).
LTE Rel-14 V2X subframe structure as shown in Figure 1, including 14 OFDM (orthogonal frequency division multiplexing,
Orthogonal Frequency Division Multiplexing) symbol；Wherein, 4 OFDM symbols are for carrying pilot tone
Symbol, i.e. demodulation reference signal DMRS；1 OFDM symbol user carries protection interval (GP, Guard Period)；And first
A OFDM symbol can be used for the adjustment of automatic growth control AGC.
It includes mainly following mode that the DMRS of the SA and Data of LTE Rel-14 V2X, which are generated,：
The DMRS sequences that Scheduling assistance information SA is used are followed using pre-defined initialization ID and predefined 4
Ring shifts random selection one in { 0,3,6,9 }, and receiving terminal needs following for the DMRS that blind Detecting SA uses when receiving SA
Ring shifts.DMRS sequences in the OFDM symbol of different DMRS are identical.
The DMRS initialization ID and cyclic shift for the DMRS sequences that data information Data is used are superfluous by the cycle of SA
(N_ID) that the ID values that remaining check (CRC) bit obtains generate, can be different in the OFDM symbol of different DMRS, works as N_
When ID mod 2=0, DMRS sequences are identical, and when N_ID mod 2=1, DMRS sequences are different, and are led to
[1, -1,1, -1] are crossed to be extended.Receiving terminal can be with the DMRS of the entire data transmission of Perfect Reconstruction according to the SA information received
Sequence.
But existing LTE Rel-14 V2X systems only support list at present between terminal UE in the link of direct communication
The mode of antenna transmission, with the development of multi-antenna technology, the transmission mode of single antenna can not be suitable for multi-antenna mode.
Invention content
The method and device for transmitting diversity that the purpose of the present invention is to provide a kind of in multiple antenna communication, solves
The data transfer mode of single antenna can not be suitable for the problem of multiple antenna communication in the prior art.
In order to achieve the above object, the embodiment of the present invention provides a kind of side of the transmitting diversity in multiple antenna communication
Method, the multiple antenna communication include an antenna port, the method includes：
Determine the data information of data to be sent and the transmission subframe of the data to be sent；
According to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, it is by the transmission sub-frame division in the time domain
Multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one the first OFDM symbol occupied by frequency pilot sign；
The first OFDM symbol to multiple precoding sub-blocks and the second OFDM symbol occupied by data information carry out respectively
Pre-encode operation, and pass through the data information after antenna port transmission pre-encode operation；Wherein, to the same numeral that prelists
The pre-encode operation that first OFDM symbol and the second OFDM symbol in the block carry out is identical pre-encode operation.
Wherein, first OFDM symbol to multiple precoding sub-blocks respectively and the 2nd OFDM occupied by data information
Symbol carries out pre-encode operation, the step of obtaining data to be sent, including：
It is that each precoding sub-block selects pre-coding matrix at random from preset pre-coding matrix set；Or it is multiple pre-
Coded sub-blocks select the pre-coding matrix of itself according to the sequence made an appointment from preset pre-coding matrix set；
Using the pre-coding matrix of selection to precoding the first OFDM symbol in the block and the second OFDM symbol point
Pre-encode operation is not carried out.
Wherein, the orthogonal frequency division multiplex OFDM symbol according in the transmission subframe, in the time domain by the transmission
Before sub-frame division is multiple precoding sub-blocks, the method further includes：
First OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols；
The orthogonal frequency division multiplex OFDM symbol according in the transmission subframe in the time domain draws the transmission subframe
The step of being divided into multiple precoding sub-blocks, including：
According to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe, in the time domain by transmission
Frame is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
Wherein, the orthogonal frequency division multiplex OFDM symbol according in the transmission subframe, in the time domain by the transmission
Before sub-frame division is multiple precoding sub-blocks, the method further includes：
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols；
The orthogonal frequency division multiplex OFDM symbol according in the transmission subframe in the time domain draws the transmission subframe
The step of being divided into multiple precoding sub-blocks, including：
According to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by transmission
Frame is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first OFDM symbol.
Wherein, the orthogonal frequency division multiplex OFDM symbol according in the transmission subframe, in the time domain by the transmission
Before sub-frame division is multiple precoding sub-blocks, the method further includes：
First OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols, is counted described
It is believed that the second OFDM symbol that breath occupies is split into the multiple second sub- OFDM symbols；
The orthogonal frequency division multiplex OFDM symbol according in the transmission subframe in the time domain draws the transmission subframe
The step of being divided into multiple precoding sub-blocks, including：
According to the first sub- OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by the transmission
Sub-frame division is multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
Wherein, when the transmission subframe is short subframe,
According to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, it is by the transmission sub-frame division in the time domain
After multiple precoding sub-blocks, the method further includes：
Determine the Scheduling assistance information of data to be sent；
The third OFDM symbol that the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information are occupied respectively
Pre-encode operation is carried out, and sends the Scheduling assistance information after pre-encode operation by the antenna port；Wherein, to same
The pre-encode operation that precoding the first OFDM symbol in the block and third OFDM symbol carry out is identical pre-encode operation.
The embodiment of the present invention also provides a kind of device of the transmitting diversity in multiple antenna communication, the multi-antenna communication
System includes an antenna port, and described device includes：
First information determining module, the hair of data information and the data to be sent for determining data to be sent
Send subframe；
Division module is used for according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, in the time domain will be described
Transmission sub-frame division is multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one by frequency pilot sign occupancy
First OFDM symbol；
First precoding module, for respectively to multiple precoding sub-blocks the first OFDM symbol and occupied by data information
The second OFDM symbol carry out pre-encode operation, and pass through the antenna port send pre-encode operation after data information；
Wherein, the pre-encode operation carried out to same precoding the first OFDM symbol in the block and the second OFDM symbol is identical pre-
Encoding operation.
Wherein, first precoding module includes：
Matrix determination sub-module, for being that the selection of each precoding sub-block is pre- at random from preset pre-coding matrix set
Encoder matrix；Or multiple precoding sub-blocks select itself according to the sequence made an appointment from preset pre-coding matrix set
Pre-coding matrix；
Precoding submodule, for the pre-coding matrix using selection to precoding the first OFDM symbol in the block
Pre-encode operation is carried out respectively with the second OFDM symbol.
Wherein, described device further includes：
First division module, for first OFDM symbol occupied by frequency pilot sign to be split into multiple first sons
OFDM symbol；
The division module includes：
First divides submodule, is used for according to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe,
It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, precoding sub-block includes at least one the
One sub- OFDM symbol.
Wherein, described device further includes：
Second division module, for second OFDM symbol occupied by data information to be split into multiple second sons
OFDM symbol；
The division module includes：
Second divides submodule, is used for according to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe,
It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, precoding sub-block includes at least one the
One OFDM symbol.
Wherein, described device further includes：
Third divides module, for first OFDM symbol occupied by frequency pilot sign to be split into multiple first sons
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols by OFDM symbol；
The division module includes：
Third divides submodule, for according to the first sub- OFDM symbol and the second sub- OFDM symbols in the transmission subframe
Number, it is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, a precoding sub-block includes at least one
First sub- OFDM symbol.
Wherein, described device further includes：
Second information determination module, the dispatching distribution letter for when it is short subframe to send subframe, determining data to be sent
Breath；
Second precoding module, for respectively to the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information
The third OFDM symbol of occupancy carries out pre-encode operation, and the scheduling point after pre-encode operation is sent by the antenna port
With information；Wherein, it is to the pre-encode operation of same precoding the first OFDM symbol in the block and the progress of third OFDM symbol
Identical pre-encode operation.
The above-mentioned technical proposal of the present invention at least has the advantages that：
The embodiment of the present invention in multiple antenna communication in the method and device of transmitting diversity, by the way that subframe will be sent
In OFDM symbol be divided into multiple precoding sub-blocks, and pre-encode operation is carried out to each precoding sub-block respectively, to make
The processing that a data to be sent can be Jing Guo multiple precoding is obtained, to improve the gain of antenna transmitting diversity and precoding.
Description of the drawings
Fig. 1 shows the structural schematic diagrams of common subframe in the prior art；
Fig. 2 indicates the step flow of the method for the transmitting diversity provided in an embodiment of the present invention in multiple antenna communication
Figure；
Fig. 3 indicates one of the structural schematic diagram provided in an embodiment of the present invention for sending subframe；
Fig. 4 indicates the second structural representation provided in an embodiment of the present invention for sending subframe；
Fig. 5 indicates the third structural representation provided in an embodiment of the present invention for sending subframe；
Fig. 6 indicates the four of the structural schematic diagram provided in an embodiment of the present invention for sending subframe；
Fig. 7 indicates the five of the structural schematic diagram provided in an embodiment of the present invention for sending subframe；
Fig. 8 shows the structural schematic diagrams that transmission subframe provided in an embodiment of the present invention is short subframe；
Fig. 9 indicates the structural representation of the device of the transmitting diversity provided in an embodiment of the present invention in multiple antenna communication
Figure；
Figure 10 indicates another structure of the device of the transmitting diversity provided in an embodiment of the present invention in multiple antenna communication
Schematic diagram.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
As shown in Fig. 2, the embodiment of the present invention provides a kind of method of the transmitting diversity in multiple antenna communication, it is described more
Antenna communication system includes an antenna port, the method includes：
Step 21, the data information of data to be sent and the transmission subframe of the data to be sent are determined；
Step 22, according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, in the time domain by transmission
Frame is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first occupied by frequency pilot sign
OFDM symbol；It is illustrated in figure 3 the structural schematic diagram for sending subframe, as can be seen from FIG. 3, which can be divided into 4 in advance
Coded sub-blocks；
Step 23, the first OFDM symbol to multiple precoding sub-blocks and the 2nd OFDM occupied by data information are accorded with respectively
Number carry out pre-encode operation, and pass through the antenna port send pre-encode operation after data information；Wherein, to same pre-
The pre-encode operation that the first OFDM symbol and the second OFDM symbol in coded sub-blocks carry out is identical pre-encode operation.
The method of the transmitting diversity provided in an embodiment of the present invention in multiple antenna communication usually applies to terminal (or vehicle
) between direct communication link on.It also needs to send the number to be sent while terminal sends the data information of data to be sent
According to Scheduling assistance information (i.e. SA information)；The Scheduling assistance information is transmitted by the way of not carrying out precoding (i.e. according to existing
Have the scheme transmission of technology), then other-end can listen to corresponding SA information；It should be noted that same number to be sent
According to SA information sending time need to be not later than the data to be sent data information data sending time.
It is illustrated in figure 4 a common structural schematic diagram for sending subframe, subcarrier bandwidth 15KHz, the transmission subframe packet
4 frequency pilot signs (including 4 the first OFDM symbols) are included, then the transmission sub-frame division can be 4 in the time domain and prelisted
Numeral block；Respectively the second OFDM symbol of the first OFDM symbol to 4 precodings pilot tone in the block in Fig. 3 and data into
The identical pre-encode operation of row, so that processing of the data information of a data to be sent Jing Guo 4 precodings, improves
Diversity gain.
Specifically, in the above embodiment of the present invention, step 22 includes：
It is that each precoding sub-block selects pre-coding matrix at random from preset pre-coding matrix set；Or it is multiple pre-
Coded sub-blocks select the pre-coding matrix of itself according to the sequence made an appointment from preset pre-coding matrix set；Ruo Benshen
Multiple antenna communication please includes two antennas, then the pre-coding matrix for including in preset pre-coding matrix set can wrap
Contain but is not limited to following matrix：
Using the pre-coding matrix of selection to precoding the first OFDM symbol in the block and the second OFDM symbol point
Pre-encode operation is not carried out.I.e. using any one matrix in above-mentioned 6 matrixes to precoding the first OFDM symbol in the block
Pre-encode operation is carried out respectively with the second OFDM symbol.
Further, the above embodiment of the present invention is introduced in such a way that OFDM symbol is split into multiple OFDM symbols
The subcarrier bandwidth of bigger；Such as in the case of introducing subcarrier bandwidth as 30KHz, an OFDM symbol is split into two sons
OFDM symbol.Three kinds of division schemes are provided in the embodiment of the present invention.
The first scheme, before step 22, the embodiment of the invention also includes：
Step 201, first OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols；
Then step 22 includes：According to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe, in time domain
On by the transmission sub-frame division be multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first son
OFDM symbol.
As shown in figure 5, the first OFDM symbol of pilot tone is split into 2 the first sub- OFDM symbols, and the second of data
The transmission subframe in such cases, can be at most divided into 8 precoding sub-blocks by OFDM symbol without division, so as to
Data information to treat transmission data carries out 8 independent pre-encode operations, further increases diversity gain.
It should be noted that the pilot frequency sequence for 2 the first sub- OFDM symbols that first OFDM symbol divides can
It can also be different with identical, the generation of pilot frequency sequence can indicate to determine by SA information.
Second scheme, before step 22, the embodiment of the invention also includes：
Step 202, second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols；
Then step 22 includes：
According to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by transmission
Frame is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first OFDM symbol.
As shown in fig. 6, the second OFDM symbol of data is split into 2 the second sub- OFDM symbols, and the first of pilot tone
OFDM symbol is divided without symbol, in such cases, which can be at most divided into 4 pre-coding matrixes, from
And the data information that can treat transmission data carries out 4 independent pre-encode operations.Due to the second OFDM symbol to data
It is divided, more fine time-domain resource granularity can be provided；First OFDM symbol for sending subframe simultaneously is generally used
Make automatic growth control AGC, the last one OFDM symbol is typically used as protection interval GP, due to first OFDM symbol and most
The latter OFDM symbol divides, then first sub- OFDM symbol after dividing is used as AGC, last height
OFDM symbol is used as GP, to reduce the expense of AGC and GP.
The third scheme, before step 22, the embodiment of the invention also includes：
Step 203, first OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols, it will
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols；
Then step 22 includes：
According to the first sub- OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by the transmission
Sub-frame division is multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
As shown in fig. 7, the first OFDM symbol of pilot tone is not only split into 2 the first sub- OFDM symbols in this kind of scheme,
Second OFDM symbol of also data is split into 2 the second sub- OFDM symbols, at this point it is possible to which the transmission subframe is at most divided into 8
A precoding sub-block, the data information so as to treat transmission data carry out 8 independent pre-encode operations, further increase
Diversity gain；Since the second OFDM symbol to data is divided, more fine time-domain resource granularity can be provided；Together
When send subframe first OFDM symbol be typically used as automatic growth control AGC, the last one OFDM symbol is typically used as protecting
Shield interval GP, due to being divided to first OFDM symbol and the last one OFDM symbol, then first son after dividing
OFDM symbol is used as AGC, last sub- OFDM symbol is used as GP, to reduce the expense of AGC and GP.
Further, when the transmission subframe is short subframe, such as slot-level TTI or several OFDM symbols
In the case of constituting a short subframe, method provided in an embodiment of the present invention further includes：
Step 24, the Scheduling assistance information of data to be sent is determined；
Step 25, the third the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information occupied respectively
OFDM symbol carries out pre-encode operation, and the Scheduling assistance information after pre-encode operation is sent by the antenna port；Its
In, the pre-encode operation carried out to same precoding the first OFDM symbol in the block and third OFDM symbol is identical prelists
Code operation.
In the above embodiment of the present invention, SA information can not only be sent according to existing transmission plan, can be with
It is sent by the way of pre-encode operation.Specifically, believing respectively 4 precodings dispatching distribution in the block in Fig. 8
The first OFDM symbol that the third OFDM symbol occupied and pilot tone occupy is ceased to carry out passing through antenna again after pre-encode operation respectively
Port is sent, so that processing of the Scheduling assistance information Jing Guo 4 precodings, improves diversity gain.Specifically, such as Fig. 8
It show, in the case of short subframe, terminal carries out the transmission of SA and data, the pilot tone sequence of wherein SA with reference to the mode of short subframe
Row are to generate (to include the letter of predefined demodulated reference signal DMRS initialization ID and cyclic shift using predefined sequence
Breath), and the pilot frequency sequence of data information can generate DMRS sequences according to the instruction of SA.
To sum up, the method for the transmitting diversity that the above embodiment of the present invention provides will be by that will send the OFDM symbol in subframe
Multiple precoding sub-blocks are divided into, and pre-encode operation is carried out to each precoding sub-block respectively, so that one to be sent
Data can be Jing Guo multiple precoding processing, to improve the gain of antenna transmitting diversity and precoding；And by by OFDM
Symbol is split into multiple OFDM symbols to increase the quantity of precoding sub-block, to further promote diversity gain, reduces AGC
With the expense of GP.
As shown in figure 9, the embodiment of the present invention also provides a kind of device of the transmitting diversity in multiple antenna communication, it is described
Multiple antenna communication includes an antenna port, and described device includes：
First information determining module 91, data information and the data to be sent for determining data to be sent
Send subframe；
Division module 92 is used for according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, in the time domain by institute
It is multiple precoding sub-blocks to state and send sub-frame division；Wherein, a precoding sub-block is occupied comprising at least one by frequency pilot sign
The first OFDM symbol；
First precoding module 93, for respectively to multiple precoding sub-blocks the first OFDM symbol and accounted for by data information
Second OFDM symbol carries out pre-encode operation, and the data letter after pre-encode operation is sent by the antenna port
Breath；Wherein, the pre-encode operation carried out to same precoding the first OFDM symbol in the block and the second OFDM symbol is identical
Pre-encode operation.
Specifically, the first precoding module described in the above embodiment of the present invention includes：
Matrix determination sub-module, for being that the selection of each precoding sub-block is pre- at random from preset pre-coding matrix set
Encoder matrix；Or multiple precoding sub-blocks select itself according to the sequence made an appointment from preset pre-coding matrix set
Pre-coding matrix；
Precoding submodule, for the pre-coding matrix using selection to precoding the first OFDM symbol in the block
Pre-encode operation is carried out respectively with the second OFDM symbol.
Specifically, device described in the above embodiment of the present invention further includes：
First division module, for first OFDM symbol occupied by frequency pilot sign to be split into multiple first sons
OFDM symbol；
The division module includes：
First divides submodule, is used for according to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe,
It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, precoding sub-block includes at least one the
One sub- OFDM symbol.
Specifically, device described in the above embodiment of the present invention further includes：
Second division module, for second OFDM symbol occupied by data information to be split into multiple second sons
OFDM symbol；
The division module includes：
Second divides submodule, is used for according to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe,
It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, precoding sub-block includes at least one the
One OFDM symbol.
Specifically, device described in the above embodiment of the present invention further includes：
Third divides module, for first OFDM symbol occupied by frequency pilot sign to be split into multiple first sons
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols by OFDM symbol；
The division module includes：
Third divides submodule, for according to the first sub- OFDM symbol and the second sub- OFDM symbols in the transmission subframe
Number, it is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, a precoding sub-block includes at least one
First sub- OFDM symbol.
Specifically, device described in the above embodiment of the present invention further includes：
Second information determination module, the dispatching distribution letter for when it is short subframe to send subframe, determining data to be sent
Breath；
Second precoding module, for respectively to the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information
The third OFDM symbol of occupancy carries out pre-encode operation, and the scheduling point after pre-encode operation is sent by the antenna port
With information；Wherein, it is to the pre-encode operation of same precoding the first OFDM symbol in the block and the progress of third OFDM symbol
Identical pre-encode operation.
To sum up, the device for the transmitting diversity that the above embodiment of the present invention provides will be by that will send the OFDM symbol in subframe
Multiple precoding sub-blocks are divided into, and pre-encode operation is carried out to each precoding sub-block respectively, so that one to be sent
Data can be Jing Guo multiple precoding processing, to improve the gain of antenna transmitting diversity and precoding；And by by OFDM
Symbol is split into multiple OFDM symbols to increase the quantity of precoding sub-block, to further promote diversity gain, reduces AGC
With the expense of GP.
It should be noted that the device of transmitting diversity in multiple antenna communication that the above embodiment of the present invention provides
It is that by the device of the method for the above-mentioned transmitting diversity in multiple antenna communication, above-mentioned in multiple antenna communication
All embodiments of the method for transmitting diversity are suitable for the device, and can reach same or analogous advantageous effect.
As shown in Figure 10, the embodiment of the present invention also provides a kind of device of the transmitting diversity in multiple antenna communication, should
Device includes：Processor 100；The memory 120 being connected with the processor 100 by bus interface, and pass through bus
The transceiver 110 that interface is connected with processor 100；The memory is made for storing the processor when executing operation
Program and data；Control command etc. is sent by the transceiver 110；When processor calls and executes in the memory
When the program and data that are stored, following function module is realized：
First information determining module, the hair of data information and the data to be sent for determining data to be sent
Send subframe；
Division module is used for according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, in the time domain will be described
Transmission sub-frame division is multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one by frequency pilot sign occupancy
First OFDM symbol；
First precoding module, for respectively to multiple precoding sub-blocks the first OFDM symbol and occupied by data information
The second OFDM symbol carry out pre-encode operation, and pass through the antenna port send pre-encode operation after data information；
Wherein, the pre-encode operation carried out to same precoding the first OFDM symbol in the block and the second OFDM symbol is identical pre-
Encoding operation.
Specifically, first precoding module includes：
Matrix determination sub-module, for being that the selection of each precoding sub-block is pre- at random from preset pre-coding matrix set
Encoder matrix；Or multiple precoding sub-blocks select itself according to the sequence made an appointment from preset pre-coding matrix set
Pre-coding matrix；
Precoding submodule, for the pre-coding matrix using selection to precoding the first OFDM symbol in the block
Pre-encode operation is carried out respectively with the second OFDM symbol.
Specifically, described device further includes：
First division module, for first OFDM symbol occupied by frequency pilot sign to be split into multiple first sons
OFDM symbol；
The division module includes：
First divides submodule, is used for according to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe,
It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, precoding sub-block includes at least one the
One sub- OFDM symbol.
Specifically, described device further includes：
Second division module, for second OFDM symbol occupied by data information to be split into multiple second sons
OFDM symbol；
The division module includes：
Second divides submodule, is used for according to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe,
It is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, precoding sub-block includes at least one the
One OFDM symbol.
Specifically, described device further includes：
Third divides module, for first OFDM symbol occupied by frequency pilot sign to be split into multiple first sons
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols by OFDM symbol；
The division module includes：
Third divides submodule, for according to the first sub- OFDM symbol and the second sub- OFDM symbols in the transmission subframe
Number, it is in the time domain multiple precoding sub-blocks by the transmission sub-frame division；Wherein, a precoding sub-block includes at least one
First sub- OFDM symbol.
Specifically, described device further includes：
Second information determination module, the dispatching distribution letter for when it is short subframe to send subframe, determining data to be sent
Breath；
Second precoding module, for respectively to the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information
The third OFDM symbol of occupancy carries out pre-encode operation, and the scheduling point after pre-encode operation is sent by the antenna port
With information；Wherein, it is to the pre-encode operation of same precoding the first OFDM symbol in the block and the progress of third OFDM symbol
Identical pre-encode operation.
Wherein, in Fig. 10, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor
The various circuits for the memory that 100 one or more processors represented and memory 120 represent link together.Bus architecture
Various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like can also be linked together, these
All it is it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 110
It can be multiple element, that is, include transmitter and transceiver, provide for over a transmission medium being communicated with various other devices
Unit.Processor 100 is responsible for bus architecture and common processing, and memory 120 can store processor 100 and execute behaviour
Used data when making.
Processor 100 is responsible for bus architecture and common processing, and memory 920 can store processor 100 and hold
Used data when row operation.
To sum up, the device for the transmitting diversity that the above embodiment of the present invention provides will be by that will send the OFDM symbol in subframe
Multiple precoding sub-blocks are divided into, and pre-encode operation is carried out to each precoding sub-block respectively, so that one to be sent
Data can be Jing Guo multiple precoding processing, to improve the gain of antenna transmitting diversity and precoding；And by by OFDM
Symbol is split into multiple OFDM symbols to increase the quantity of precoding sub-block, to further promote diversity gain, reduces AGC
With the expense of GP.
It should be noted that the device of transmitting diversity in multiple antenna communication that the above embodiment of the present invention provides
It is that by the device of the method for the above-mentioned transmitting diversity in multiple antenna communication, above-mentioned in multiple antenna communication
All embodiments of the method for transmitting diversity are suitable for the device, and can reach same or analogous advantageous effect.
The embodiment of the present invention additionally provides a kind of computer readable storage medium, is stored thereon with computer program and (refers to
Enable), which realizes following steps when being executed by processor：
Determine the data information of data to be sent and the transmission subframe of the data to be sent；
According to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, it is by the transmission sub-frame division in the time domain
Multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one the first OFDM symbol occupied by frequency pilot sign；
The first OFDM symbol to multiple precoding sub-blocks and the second OFDM symbol occupied by data information carry out respectively
Pre-encode operation, and pass through the data information after antenna port transmission pre-encode operation；Wherein, to the same numeral that prelists
The pre-encode operation that first OFDM symbol and the second OFDM symbol in the block carry out is identical pre-encode operation.
Optionally, following steps can also be realized when which is executed by processor：
It is that each precoding sub-block selects pre-coding matrix at random from preset pre-coding matrix set；Or it is multiple pre-
Coded sub-blocks select the pre-coding matrix of itself according to the sequence made an appointment from preset pre-coding matrix set；Utilize choosing
The pre-coding matrix selected carries out precoding behaviour respectively to precoding the first OFDM symbol in the block and the second OFDM symbol
Make.
Optionally, following steps can also be realized when which is executed by processor：
First OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols；
According to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe, in the time domain by transmission
Frame is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
Optionally, following steps can also be realized when which is executed by processor：
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols；
According to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by transmission
Frame is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first OFDM symbol.
Optionally, following steps can also be realized when which is executed by processor：
First OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols, is counted described
It is believed that the second OFDM symbol that breath occupies is split into the multiple second sub- OFDM symbols；
According to the first sub- OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by the transmission
Sub-frame division is multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
Optionally, following steps can also be realized when which is executed by processor：
Determine the Scheduling assistance information of data to be sent；
The third OFDM symbol that the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information are occupied respectively
Pre-encode operation is carried out, and sends the Scheduling assistance information after pre-encode operation by the antenna port；Wherein, to same
The pre-encode operation that precoding the first OFDM symbol in the block and third OFDM symbol carry out is identical pre-encode operation.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology realizes information storage.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moves
State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic tape cassette, tape magnetic disk storage or other magnetic storage apparatus
Or any other non-transmission medium, it can be used for storage and can be accessed by a computing device information.As defined in this article, it calculates
Machine readable medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (12)
1. a kind of method of the transmitting diversity in multiple antenna communication, the multiple antenna communication includes an antenna end
Mouthful, which is characterized in that the method includes：
Determine the data information of data to be sent and the transmission subframe of the data to be sent；
It is in the time domain multiple by the transmission sub-frame division according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe
Precoding sub-block；Wherein, a precoding sub-block includes at least one the first OFDM symbol occupied by frequency pilot sign；
Respectively the first OFDM symbol to multiple precoding sub-blocks and by data information occupy the second OFDM symbol prelist
Code operation, and pass through the data information after antenna port transmission pre-encode operation；Wherein, in same precoding sub-block
The first OFDM symbol and the second OFDM symbol carry out pre-encode operation be identical pre-encode operation.
2. according to the method described in claim 1, it is characterized in that, described respectively accord with the first OFDM of multiple precoding sub-blocks
Number and the second OFDM symbol for being occupied by data information carry out pre-encode operation, the step of obtaining data to be sent, including：
It is that each precoding sub-block selects pre-coding matrix at random from preset pre-coding matrix set；Or multiple precodings
Sub-block selects the pre-coding matrix of itself according to the sequence made an appointment from preset pre-coding matrix set；
Using selection pre-coding matrix to precoding son the first OFDM symbol in the block and the second OFDM symbol respectively into
Row pre-encode operation.
3. according to the method described in claim 1, it is characterized in that, the orthogonal frequency division multiplexing according in the transmission subframe
OFDM symbol, before being in the time domain multiple precoding sub-blocks by the transmission sub-frame division, the method further includes：
First OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols；
It is described according to it is described transmission subframe in orthogonal frequency division multiplex OFDM symbol, be by the transmission sub-frame division in the time domain
The step of multiple precoding sub-blocks, including：
According to the first sub- OFDM symbol and the second OFDM symbol in the transmission subframe, the transmission subframe is drawn in the time domain
It is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
4. according to the method described in claim 1, it is characterized in that, the orthogonal frequency division multiplexing according in the transmission subframe
OFDM symbol, before being in the time domain multiple precoding sub-blocks by the transmission sub-frame division, the method further includes：
Second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols；
It is described according to it is described transmission subframe in orthogonal frequency division multiplex OFDM symbol, be by the transmission sub-frame division in the time domain
The step of multiple precoding sub-blocks, including：
According to the first OFDM symbol and the second sub- OFDM symbol in the transmission subframe, the transmission subframe is drawn in the time domain
It is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first OFDM symbol.
5. according to the method described in claim 1, it is characterized in that, the orthogonal frequency division multiplexing according in the transmission subframe
OFDM symbol, before being in the time domain multiple precoding sub-blocks by the transmission sub-frame division, the method further includes：
First OFDM symbol occupied by frequency pilot sign is split into the multiple first sub- OFDM symbols, is believed described by data
The second OFDM symbol that breath occupies is split into the multiple second sub- OFDM symbols；
It is described according to it is described transmission subframe in orthogonal frequency division multiplex OFDM symbol, be by the transmission sub-frame division in the time domain
The step of multiple precoding sub-blocks, including：
According to the first sub- OFDM symbol and the second sub- OFDM symbol in the transmission subframe, in the time domain by the transmission subframe
It is divided into multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first sub- OFDM symbol.
6. according to the method described in claim 1, it is characterized in that, when the transmission subframe be short subframe when,
It is in the time domain multiple by the transmission sub-frame division according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe
After precoding sub-block, the method further includes：
Determine the Scheduling assistance information of data to be sent；
The third OFDM symbol occupied respectively to the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information carries out
Pre-encode operation, and pass through the Scheduling assistance information after antenna port transmission pre-encode operation；Wherein, it prelists to same
The pre-encode operation that numeral the first OFDM symbol in the block and third OFDM symbol carry out is identical pre-encode operation.
7. a kind of device of the transmitting diversity in multiple antenna communication, the multiple antenna communication includes an antenna end
Mouthful, which is characterized in that described device includes：
First information determining module, transmission of data information and the data to be sent for determining data to be sent
Frame；
Division module is used for according to the orthogonal frequency division multiplex OFDM symbol in the transmission subframe, in the time domain by the transmission
Sub-frame division is multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first occupied by frequency pilot sign
OFDM symbol；
First precoding module, the occupied for the first OFDM symbol to multiple precoding sub-blocks respectively and by data information
Two OFDM symbols carry out pre-encode operation, and the data information after pre-encode operation is sent by the antenna port；Wherein,
The pre-encode operation carried out to same precoding the first OFDM symbol in the block and the second OFDM symbol is identical precoding
Operation.
8. device according to claim 7, which is characterized in that first precoding module includes：
Matrix determination sub-module, for being that each precoding sub-block selects precoding at random from preset pre-coding matrix set
Matrix；Or multiple precoding sub-blocks select the pre- of itself according to the sequence made an appointment from preset pre-coding matrix set
Encoder matrix；
Precoding submodule, for the pre-coding matrix using selection to precoding son the first OFDM symbol in the block and the
Two OFDM symbols carry out pre-encode operation respectively.
9. device according to claim 7, which is characterized in that described device further includes：
First division module is accorded with for first OFDM symbol occupied by frequency pilot sign to be split into the multiple first sub- OFDM
Number；
The division module includes：
First divide submodule, for according to it is described transmission subframe in the first sub- OFDM symbol and the second OFDM symbol, when
On domain by the transmission sub-frame division be multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first son
OFDM symbol.
10. device according to claim 7, which is characterized in that described device further includes：
Second division module is accorded with for second OFDM symbol occupied by data information to be split into the multiple second sub- OFDM
Number；
The division module includes：
Second divide submodule, for according to it is described transmission subframe in the first OFDM symbol and the second sub- OFDM symbol, when
On domain by the transmission sub-frame division be multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first
OFDM symbol.
11. device according to claim 7, which is characterized in that described device further includes：
Third divides module, is accorded with for first OFDM symbol occupied by frequency pilot sign to be split into the multiple first sub- OFDM
Number, second OFDM symbol occupied by data information is split into the multiple second sub- OFDM symbols；
The division module includes：
Third divide submodule, for according to it is described transmission subframe in the first sub- OFDM symbol and the second sub- OFDM symbol,
In time domain by the transmission sub-frame division be multiple precoding sub-blocks；Wherein, a precoding sub-block includes at least one first
Sub- OFDM symbol.
12. device according to claim 7, which is characterized in that described device further includes：
Second information determination module, for when it is short subframe to send subframe, determining the Scheduling assistance information of data to be sent；
Second precoding module, for being occupied respectively to the first OFDM symbol of multiple precoding sub-blocks and scheduled distribution information
Third OFDM symbol carry out pre-encode operation, and pass through the antenna port send pre-encode operation after dispatching distribution letter
Breath；Wherein, the pre-encode operation carried out to same precoding the first OFDM symbol in the block and third OFDM symbol is identical
Pre-encode operation.
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| CN201710183586.3A CN108631834B (en) | 2017-03-24 | 2017-03-24 | Method and device for transmitting diversity in multi-antenna communication system |
| PCT/CN2018/078470 WO2018171438A1 (en) | 2017-03-24 | 2018-03-08 | Method and apparatus for transmitting diversity in multi-antenna communication system |
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| CN111181707A (en) * | 2018-11-09 | 2020-05-19 | 华为技术有限公司 | Data transmission method and communication device |
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| WO2018171438A1 (en) | 2018-09-27 |
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