CN108259145A - A kind of data transmission method, sending device and reception device - Google Patents
A kind of data transmission method, sending device and reception device Download PDFInfo
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- CN108259145A CN108259145A CN201611239479.XA CN201611239479A CN108259145A CN 108259145 A CN108259145 A CN 108259145A CN 201611239479 A CN201611239479 A CN 201611239479A CN 108259145 A CN108259145 A CN 108259145A
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- dmrs
- ptrs
- data flow
- antenna sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Abstract
The present invention relates to a kind of field of communication technology more particularly to data transmission method, sending device and reception device, including：Transmitting terminal transmits R data in M antenna sets and flow to receiving terminal, S PRTS is sent to receiving terminal, wherein, each PTRS is transmitted after precoding from the K antenna sets with same phase noise in M antenna sets, and M*R DMRS is sent to receiving terminal, and each DMRS is transmitted after precoding from an antenna sets, the phase noise of antenna port in wherein same group is identical, the embodiment of the present invention, by the way that each DMRS is transmitted in different antennae group respectively, each PTRS is transmitted in the antenna sets with same phase noise respectively simultaneously, these information that receiving terminal is sent based on transmitting terminal, calculate the phase noise of each antenna sets of transmitting terminal, it and then can be according to the phase noise of calculating, the data received are correctly parsed.
Description
Technical field
The present invention relates to a kind of field of communication technology more particularly to data transmission method, sending device and reception devices.
Background technology
Phase noise comes from emitter (such as transmitter) and the local oscillations in reception device (such as receiver)
Device will have an impact the transmission of multi-carrier signal.And at high band (more than 6GHz), the influence of phase noise will more
Seriously, docking is needed to collect mail number compensation for carrying out phase noise to ensure system performance.By introducing Phase Tracking in transmitting terminal
Reference signal (Phrase Tracking Reference Singal, PTRS), can track caused by phase noise
Phase change ensures that receiving terminal can be estimated into the phase noise of line link, and docks the collection of letters number and compensate.
Since long term evolution (Long Term Evolution, LTE) system is applied to low-frequency range, therefore without corresponding
Phase Tracking reference signal design.In the 5G agreements of publication, it is proposed that a kind of transmission method of Phase Tracking reference signal, such as
Shown in Fig. 1 (a) and Fig. 1 (b).
Fig. 1 (a) represents downlink transfer, wherein the grid of different lines represents different port, each Phase Tracking is with reference to letter
Number port occupy a subcarrier, continuously transmitted in a subframe.Base station institute in user's transmission is informed by dynamic signaling
The port number of Phase Tracking reference signal used can use 2 port transmissions, 1 port transmission or not transmit.Fig. 1
(b) uplink is represented in, p represents port numbers, and the port of each Phase Tracking reference signal occupies a subcarrier, and one
Every transmission among a subframe.Terminal passes through the phase noise compensation signal used in the transmission of uplink dynamic signaling signals base
Port number can use 1 port or 2 ports.PTRS and demodulated reference signal (De Modulation Reference
Signal, DMRS) it is similar, it is used, and be transmitted after precoding when transmitting user data.Meanwhile in such a system,
Each customer traffic corresponds to a DMRS port, and transmitted on complete aerial array using identical precoding.
In said program, Phase Tracking reference signal demodulated reference signal corresponding with user data and user data
(Demodulation Reference Signal, DMRS) undergoes identical channel.Phase Tracking reference signal is used to calculate it
The phase difference between channel estimation where channel estimation and DMRS on the symbol of place on symbol, so as to obtain phase noise
Caused phase change is compensated for channel estimation and data demodulation.
In multiple input multiple output, transmitting terminal is made of mutiple antennas unit or antenna port.If these antenna unit
Or antenna port have identical phase noise when (phase noise caused by identical source of phase noise), said program can be just
Really estimate phase noise and compensate its influence.But if the antenna element or antenna port of transmitting terminal have different phase noises
When, the channel that user data is undergone will exist simultaneously multiple phase changes, and each part is unable to estimate out using said program
Phase noise caused by out of phase change, and then can not correctly carry out channel estimation compensation and data demodulation.
In conclusion the prior art for transmitting terminal antenna port there are during multiple phase noises, can not calculate more
A phase noise, thus receiving terminal can not accurately parse the data flow received.
Invention content
The present invention provides a kind of data transmission method, sending device and reception device, and transmitting terminal can be calculated to realize
Multiple phase noises so that receiving terminal can correctly parse the data flow received.
In a first aspect, the embodiment of the present invention provides a kind of data transmission method with phase noise compensation ability, including：
Transmitting terminal transmits R data in M antenna sets and flow to receiving terminal, and each data flow is after precoding from M
It is transmitted in antenna sets, the phase noise of the antenna port in same antenna group is identical, and M is positive integer；
The transmitting terminal sends S Phase Tracking reference signal PTRS to the receiving terminal, and each PTRS passes through precoding
It is transmitted from K antenna sets in M antenna sets afterwards, the K antenna sets have identical phase noise；
The transmitting terminal sends M*R DMRS to the receiving terminal, and each demodulated reference signal DMRS is after precoding
It is transmitted from an antenna sets；
Wherein, a PTRS at least corresponds to a DMRS, and the PTRS and DMRS with correspondence use identical antenna
Group is transmitted, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
Optionally, the method further includes：
The transmitting terminal determines the mapping relations between PTRS and DMRS, and passes through high-level signaling or dynamic control signaling general
The mapping relations are sent to the receiving terminal；Or
Mapping relations between PTRS and DMRS are made an appointment by the transmitting terminal and the receiving terminal.
Optionally, the method further includes：
The mapping relations of data flow and DMRS are sent to institute by the transmitting terminal by high-level signaling or dynamic control signaling
State receiving terminal；Or
Data flow and the mapping relations of DMRS are made an appointment by the transmitting terminal and the receiving terminal.
Optionally, the precoding that the PTRS is used, as the data flow corresponding to the corresponding DMRS of the PTRS in the PTRS
Part weights on sub-carriers in used precoding form, the part weights is transmit day used in the PTRS
Weights corresponding to line group.
Optionally, the precoding that the DMRS is used, by the corresponding data flows of the DMRS the DMRS institute on sub-carriers
The part weights of the precoding used are formed, and the part weights are the power transmitted used in the DMRS corresponding to antenna sets
Value.
Second aspect, the embodiment of the present invention provide a kind of data transmission method with phase noise compensation ability, including：
The M*R DMRS that receiving terminal is sent according to the transmitting terminal that each antenna port receives obtains each DMRS and corresponds to
The first channel estimation value, wherein, the transmitting terminal includes M antenna sets, and the phase of the antenna port in same antenna group is made an uproar
Sound is identical, and M is positive integer, and the number that R is the data flow received, and each DMRS is after precoding from an antenna sets
Transmission；
The S PTRS that the receiving terminal is sent according to the transmitting terminal that each antenna port receives, obtains each
The corresponding second channel estimated values of PTRS, wherein, each PTRS is after precoding from K antenna sets in M antenna sets
Transmission, the K antenna sets have identical phase noise；
The receiving terminal is estimated according to corresponding first channel estimation values of the DMRS, the corresponding second channels of the PTRS
The mapping relations of value and PTRS and DMRS determine the antenna sets of the corresponding transmitting terminals of each DMRS where PTRS on symbol
Relative to the phase change on symbol where DMRS；
The receiving terminal is closed according to the phase change of each antenna sets of the transmitting terminal and the mapping of data flow and DMRS
System, determines each corresponding channel estimation value of data flow in the R data flow received on symbol where PTRS；
The receiving terminal parses each data flow according to the determining corresponding channel estimation value of each data flow.
Optionally, each antenna port of the receiving terminal, according to corresponding first channel estimation values of the DMRS, described
The mapping relations of the corresponding second channel estimated values of PTRS and the PTRS and DMRS determine the corresponding transmissions of each DMRS
The antenna sets at end where PTRS on symbol relative to the phase change where DMRS on symbol, including：
For each PTRS, the receiving terminal determines that the PTRS is corresponding according to the mapping relations of PTRS and DMRS
DMRS；Determine first channel estimation values of the corresponding DMRS of the PTRS in the subcarrier where the PTRS；By the PTRS
Corresponding DMRS is in the first channel estimation value of the subcarrier where the PTRS and the corresponding second channel estimations of the PTRS
Value is compared, obtain the antenna sets of the corresponding transmitting terminals of each DMRS where PTRS on symbol relative to where DMRS
Phase change on symbol.
Optionally, the receiving terminal by high-level signaling or dynamic control signaling receive PTRS that the transmitting terminal sends with
The mapping relations of DMRS；Or
Mapping relations between PTRS and DMRS are made an appointment by the transmitting terminal and the receiving terminal.
Optionally, the receiving terminal receives the data flow of the transmitting terminal transmission by high-level signaling or dynamic control signaling
With the mapping relations of DMRS；Or
The data flow and the mapping relations of DMRS are made an appointment by the transmitting terminal and the receiving terminal.
The third aspect, the embodiment of the present invention provide a kind of sending device, including：
Data flow transmitting element flow to reception device for transmitting R data in M antenna sets, and each data flow through
It is transmitted from M antenna sets after crossing precoding, the phase noise of the antenna port in same antenna group is identical, and M is positive integer；
PTRS transmitting elements, for sending S PTRS to the reception device, each PTRS is after precoding from M
It is transmitted in K antenna sets in antenna sets, the K antenna sets have identical phase noise；
DMRS transmitting elements, for sending M*R DMRS to the reception device, each DMRS is after precoding from one
It is transmitted in a antenna sets, wherein, a PTRS at least corresponds to a DMRS, and PTRS and DMRS with correspondence use identical
Antenna sets be transmitted, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
Optionally, the sending device further includes mapping relations transmitting element, for determining reflecting between PTRS and DMRS
Relationship is penetrated, and passes through high-level signaling or the mapping relations are sent to the reception device by dynamic control signaling；Or
Mapping relations between PTRS and DMRS are made an appointment by the sending device and the reception device.
Optionally, the method further includes mapping relations transmitting element, for passing through high-level signaling or dynamic control signaling
The mapping relations of data flow and DMRS are sent to the reception device；Or
Data flow and the mapping relations of DMRS are made an appointment by the sending device and the reception device.
Optionally, the precoding that the PTRS is used, as the data flow corresponding to the corresponding DMRS of the PTRS in the PTRS
Part weights on sub-carriers in used precoding form, the part weights is transmit day used in the PTRS
Weights corresponding to line group.
Optionally, the precoding that the DMRS is used, by the corresponding data flows of the DMRS the DMRS institute on sub-carriers
The part weights of the precoding used are formed, and the part weights are the power transmitted used in the DMRS corresponding to antenna sets
Value.
Fourth aspect, the embodiment of the present invention provide a kind of reception device, including：
First channel estimation value determination unit, the M*R that the transmitting terminal for being received according to each antenna port is sent are a
DMRS obtains corresponding first channel estimation values of each DMRS, wherein, the transmitting terminal includes M antenna sets, same antenna group
The phase noise of interior antenna port is identical, and M is positive integer, and the number that R is the data flow received, and each DMRS is by pre-
It is transmitted from an antenna sets after coding；
Second channel estimated value determination unit, the S that the transmitting terminal for being received according to each antenna port is sent
A PTRS obtains the corresponding second channel estimated values of each PTRS, wherein, each PTRS is after precoding from M antenna sets
In K antenna sets on transmit, the K antenna sets have identical phase noise；
Phase change determination unit, for corresponding according to corresponding first channel estimation values of the DMRS, the PTRS
The mapping relations of second channel estimated value and PTRS and DMRS determine that the antenna sets of the corresponding transmitting terminals of each DMRS exist
Relative to the phase change on symbol where DMRS on symbol where PTRS；
Channel estimation value determination unit, for each antenna sets according to the transmitting terminal phase change and data flow with
The mapping relations of DMRS determine each corresponding channel of data flow in the R data flow received on symbol where PTRS
Estimated value；
Resolution unit, for according to the determining corresponding channel estimation value of each data flow, parsing each data flow.
Optionally, the phase change determination unit, is specifically used for：
For each PTRS, according to the mapping relations of PTRS and DMRS, the corresponding DMRS of the PTRS are determined；It determines described
The corresponding DMRS of PTRS are in the first channel estimation value of the subcarrier where the PTRS；By the corresponding DMRS of the PTRS in institute
The first channel estimation value and the corresponding second channel estimated values of the PTRS for stating the subcarrier where PTRS are compared, and are obtained
The antenna sets of the corresponding sending device of each DMRS where PTRS on symbol relative to the phase where DMRS on symbol
Variation.
Optionally, the reception device further includes mapping relations receiving unit, for passing through high-level signaling or dynamic control
Signaling receives the mapping relations of the PTRS and DMRS of the sending device transmission；Or
Mapping relations between PTRS and DMRS are made an appointment by the sending device and the reception device.
Optionally, the reception device further includes mapping relations receiving unit, for passing through high-level signaling or dynamic control
Signaling receives the data flow of the sending device transmission and the mapping relations of DMRS；Or
The data flow and the mapping relations of DMRS are made an appointment by the sending device and the reception device.
The embodiment of the present invention, transmitting terminal transmit R data in M antenna sets and flow to receiving terminal, send S PRTS to connecing
Receiving end, wherein, each PTRS transmits and sends M*R after precoding from the K antenna sets with same phase noise
A DMRS is to receiving terminal, and each DMRS is transmitted after precoding from an antenna sets, wherein the antenna end in same group
The phase noise of mouth is identical, the embodiment of the present invention, by the way that each DMRS is transmitted in different antennae group respectively, while will be each
PTRS is transmitted in the antenna sets with same phase noise respectively, wherein the antenna port in same group is made an uproar with same phase
Sound so that these information that receiving terminal can be sent based on transmitting terminal calculate the phase noise of each antenna sets of transmitting terminal, into
And can phase compensation be carried out so as to eliminate the influence of phase noise according to the phase noise of calculating, ensure the accurate biography of data
It is defeated.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 (a) is the transmission schematic diagram of the PTRS of down direction provided in an embodiment of the present invention；
Fig. 1 (b) is the transmission schematic diagram of the PTRS of up direction provided in an embodiment of the present invention；
Fig. 2 is the method flow diagram of data transmission provided in an embodiment of the present invention；
Fig. 3 is the method flow diagram of data transmission provided in an embodiment of the present invention；
Fig. 4 is the sub-frame configuration schematic diagram of reference signal provided in an embodiment of the present invention；
Fig. 5 is data provided in an embodiment of the present invention and reference signal transmission schematic diagram；
Fig. 6 is sending device schematic diagram provided in an embodiment of the present invention；
Fig. 7 is reception device schematic diagram provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing into
It is described in detail to one step, it is clear that described embodiment is only the implementation of part of the embodiment of the present invention rather than whole
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
All other embodiment, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, transmitting terminal is terminal, and receiving terminal is base station；Or transmitting terminal is base station, receiving terminal is eventually
End.That is, method provided in an embodiment of the present invention, is not only suitable for uplink, it is also applied for downlink transfer.
In the embodiment of the present invention, transmitting terminal has N number of antenna port, and (in practical application, an antenna port can be by one
Or mutiple antennas unit is formed), N is the integer more than 1, and according to the difference of phase noise, N number of antenna port of transmitting terminal is drawn
It is divided into M groups, wherein, antenna port in same group has an identical phase noise, and the phase noise between two groups can be with
It is identical, it can not also be identical.
As an example it is assumed that transmitting terminal has 6 antenna ports (N=6), phase noise is respectively：
Antenna port 1：Phase noise a；
Antenna port 2：Phase noise b；
Antenna port 3：Phase noise a；
Antenna port 4：Phase noise a；
Antenna port 5：Phase noise b；
Antenna port 6：Phase noise a.
Then to there are many packet modes of above-mentioned 6 ports, such as can be：
Group 1：{ antenna port 1, antenna port 3, antenna port 4, antenna port 6 }；
Group 2：{ antenna port 2, antenna port 5 }.
Or can be：
Group 1：{ antenna port 1, antenna port 3 }；
Group 2：{ antenna port 4, antenna port 6 }；
Group 3：{ antenna port 2, antenna port 5 }.
Or can be：
Group 1：{ antenna port 1, antenna port 3 }；
Group 2：{ antenna port 4 }；
Group 3：{ antenna port 6 }；
Group 4：{ antenna port 2, antenna port 5 }.
Certainly, other packet modes also be can also be, as long as ensureing that the phase noise of the antenna port in same group is identical
, it can be identical for the phase noise of the antenna port between group, it can not also be identical.
In the embodiment of the present invention, it is assumed that transmitting terminal sends R data flow to receiving terminal, and R is positive integer.
As shown in Fig. 2, for data transmission method schematic diagram provided in an embodiment of the present invention, executive agent is transmitting terminal, should
Transmitting terminal be terminal or base station, including：
Step 201, transmitting terminal transmit R data in M antenna sets and flow to receiving terminal, and each data flow passes through precoding
It is transmitted from M antenna sets afterwards, the phase noise of the antenna port in same antenna group is identical, and M is positive integer.
Step 202, transmitting terminal send S PTRS to receiving terminal, and each PTRS is after precoding from the K of M antenna sets
It is transmitted in a antenna sets, the K antenna sets have identical phase noise.
Step 203, transmitting terminal send M*R DMRS to receiving terminal, and each DMRS is after precoding from an antenna sets
Middle transmission, wherein, a PTRS at least corresponds to a DMRS, and the PTRS and DMRS with correspondence use identical antenna sets
It is transmitted, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
In above-mentioned steps 201, transmitting terminal transmits R data in M antenna sets and flow to receiving terminal, wherein, each data flow
After precoding receiving terminal is sent to by M antenna sets.
In above-mentioned steps 202, transmitting terminal sends S PTRS to receiving terminal, wherein, each PTRS is after precoding from K
It is transmitted in a antenna sets, wherein, also, K antenna sets are the antenna sets for having same noise, for example, with example above
Son is used as explanation, it is assumed that the antenna of transmitting terminal is divided into：
Group 1：{ antenna port 1, antenna port 3 }；
Group 2：{ antenna port 4, antenna port 6 }；
Group 3：{ antenna port 2, antenna port 5 }.
Wherein, group 1 and the phase noise all same of the antenna port in group 2 are organized in the antenna port and group 1 and group 2 in 3
The phase noise of antenna port differ, for any one in S PTRS, can be sent from group 1 or from 2 hair of group
It send or sends from group 1 and group 2 or sent from group 3.
Optionally, the precoding used in the step for PTRS, as the data flow corresponding to the corresponding DMRS of the PTRS
The PTRS part weights on sub-carriers in used precoding form, the part weights are the transmission PTRS institutes
The weights corresponding to antenna sets used.
In above-mentioned steps 203, transmitting terminal sends M*R DMRS to receiving terminal, and each DMRS is after precoding from one
It is transmitted in antenna sets.
That is, each DMRS is sent to receiving terminal, also, optionally from M port, the precoding that DMRS is used, by this
The corresponding data flows of DMRS are formed in the part weights of the DMRS precodings used on sub-carriers, and the part weights are
Transmit the weights corresponding to antenna sets used in the DMRS.
And the mapping relations of data flow and DMRS by high-level signaling or dynamic control signaling are sent to and connect by transmitting terminal
Receiving end；Or data flow and the mapping relations of DMRS are made an appointment by transmitting terminal and receiving terminal；Wherein, each data flow, which corresponds to, divides
The M DMRS port do not transmitted in M different antennae group.
And transmitting terminal determines the mapping relations between PTRS and DMRS, and passes through high-level signaling or dynamic control signaling
The mapping relations are sent to receiving terminal；Or the mapping relations between PTRS and DMRS are appointed in advance by transmitting terminal with receiving terminal
It is fixed；Wherein, a PTRS at least corresponds to a DMRS, and the PTRS and DMRS with correspondence are carried out using identical antenna sets
Transmission, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
The embodiment of the present invention, transmitting terminal transmit R data in M antenna sets and flow to receiving terminal, send S PRTS to connecing
Receiving end, wherein, each PTRS transmits and sends M*R after precoding from the K antenna sets with same phase noise
A DMRS is to receiving terminal, and each DMRS is transmitted after precoding from an antenna sets, wherein the antenna end in same group
The phase noise of mouth is identical, the embodiment of the present invention, by the way that each DMRS is transmitted in different antennae group respectively, while will be each
PTRS is transmitted in the antenna sets with same phase noise respectively, wherein the antenna port in same group is made an uproar with same phase
Sound so that these information that receiving terminal can be sent based on transmitting terminal calculate the phase noise of each antenna sets of transmitting terminal, into
And can phase compensation be carried out so as to eliminate the influence of phase noise according to the phase noise of calculating, ensure the accurate biography of data
It is defeated.
As shown in figure 3, the method for data transmission provided in an embodiment of the present invention, executive agent is receiving terminal, receiving terminal
For base station or terminal, including：
The M*R DMRS that step 301, receiving terminal are sent according to the transmitting terminal that each antenna port receives, obtains each
Corresponding first channel estimation values of DMRS, wherein, the transmitting terminal includes M antenna sets, the antenna port in same antenna group
Phase noise it is identical, M is positive integer, and the number that R is the data flow received, and each DMRS is after precoding from one
It is transmitted in antenna sets.
The S PTRS that step 302, receiving terminal are sent according to the transmitting terminal that each antenna port receives, obtains every
The corresponding second channel estimated value of a PTRS, wherein, each PTRS is after precoding from K antenna sets in M antenna sets
Upper transmission, the K antenna sets have identical phase noise.
Step 303, receiving terminal are according to corresponding first channel estimation values of the DMRS, the corresponding second channels of the PTRS
The mapping relations of estimated value and PTRS and DMRS determine that the antenna sets of the corresponding transmitting terminals of each DMRS accord with where PTRS
Relative to the phase change on symbol where DMRS on number.
Step 304, receiving terminal are according to the phase change and data flow of each antenna sets of the transmitting terminal and reflecting for DMRS
Relationship is penetrated, determines each corresponding channel estimation value of data flow in the R data flow received on symbol where PTRS.
Step 305, receiving terminal parse each data flow according to the determining corresponding channel estimation value of each data flow.
The method of the data transmission of receiving terminal shown in Fig. 3 is opposite with the method for the data transmission of transmitting terminal shown in Fig. 2
Should, i.e., transmitting terminal carries out phase to receiving terminal transmission data and reference signal, receiving terminal according to the data and reference signal received
Position noise adjustment and parsing data.
In above-mentioned steps 303, optionally, determine that the antenna sets of the corresponding transmitting terminals of each DMRS exist in the following manner
Relative to the phase change on symbol where DMRS on symbol where PTRS：
For each PTRS, receiving terminal performs following operate：
Step 1, the mapping relations according to PTRS and DMRS determine the corresponding DMRS of PTRS；
Step 2 determines first channel estimation values of the corresponding DMRS of PTRS in the subcarrier where PTRS；
Step 3 corresponds to the corresponding DMRS of PTRS in the first channel estimation value and PTRS of the subcarrier where institute PTRS
Second channel estimated value be compared, obtain the antenna sets of the corresponding transmitting terminals of each DMRS where PTRS on symbol it is opposite
In the phase change where DMRS on symbol.
And receiving terminal also receives reflecting for the PTRS and DMRS of transmitting terminal transmission by high-level signaling or dynamic control signaling
Penetrate relationship；Or the mapping relations between PTRS and DMRS are made an appointment by transmitting terminal and receiving terminal.
And receiving terminal receives the data flow of transmitting terminal transmission and reflecting for DMRS by high-level signaling or dynamic control signaling
Penetrate relationship；Or data flow and the mapping relations of DMRS are made an appointment by transmitting terminal and receiving terminal.
With reference to specific embodiment, data transmission method provided by the invention is explained in detail and illustrated.
Embodiment one
Assuming that user data fluxion R=2 to be transmitted, preceding N1 antenna port has identical in the aerial array of transmitting terminal
Phase noise be divided into one group, there is rear N-N1 antenna port identical phase noise to be divided into one group, i.e. M=2, and two groups it
Between phase noise it is different.Receiving terminal uses two antenna ports, and with different phase noises.Transmitting terminal uses M*R=4
A DMRS port and S=2 PTRS port, wherein, N is the sum of transmitting terminal antenna port.
Assuming that the sub-frame configuration of reference signal is as shown in Figure 4.Wherein, DMRS is located at third OFDM symbol, includes 4 ends
Mouthful, the frequency division multiplexing in symbol.Each PTRS reference signals occupy a subcarrier, and (PTRS ports 1 are configured in the 8th subcarrier
On, PTRS ports 2 are configured on the 7th subcarrier), it is continuously transmitted on the 4th to 14 symbol.The 1-2 ofdm signal be
Control channel, rest part are user data.
It should be noted that illustrated here only as example, in practical application, how to be configured DMRS port and
The position of PTRS ports, visually depending on actual needs.
Base station side (for using base station as transmitting terminal)：
By taking k-th of subcarrier as an example, pre-coding matrix is expressed as used in user data transmission
Wherein,KnowFor N1× 1 column vector corresponds respectively to pre- used in first and second data flows
In coding, weights used in preceding N1 antenna port.KnowFor (N-N1The column vector of) × 1 corresponds respectively to
One and second data flow used in precoding, weights used in rear N-N1 antenna port.
As shown in figure 5, for data provided in an embodiment of the present invention and reference signal transmission schematic diagram, wherein：
DMRS port 1 is transmitted on the preceding N1 antenna port of transmitting terminal, is distributed in subcarrier d1=4, on 8,12.It is right
DMRS1 on subcarrier d1 is usedCarry out precoding.
DMRS port 2 is transmitted on the rear N-N1 antenna port of transmitting terminal, is distributed in subcarrier d2=3, on 7,11.
For the DMRS2 on subcarrier d2, useCarry out precoding.
DMRS port 3 is transmitted on the preceding N1 antenna port of transmitting terminal, is distributed in subcarrier d3=2, on 6,10.It is right
DMRS3 on subcarrier d3 is usedCarry out precoding.
DMRS port 4 is transmitted on the rear N-N1 antenna port of transmitting terminal, is distributed in subcarrier d4=1, on 5,9.
For the DMRS4 on subcarrier d4, useCarry out precoding.
2 PTRS ports are for two phase noises for being grouped internal antenna port of estimation.Wherein PTRS ports 1 use
Precoding is carried out, PTRS ports 2 useCarry out precoding.
Fig. 5 gives the schematic diagram of transmission, wherein the first data flow is respectively in N1 antenna port and N-N1 antenna end
Port transmission, the second data flow is also in N1 antenna port and N-N1 antenna port transmission；DMRS1 ports, DMRS3 ends
Mouth and PTRS1 ports are transmitted in N1 antenna port, and DMRS2 ports, DMRS4 ports and PTRS2 ports are in N-N1 antenna end
Port transmission.
PTRS1 is mapped to DMRS1 by base station side, and the information that PTRS2 maps to DMRS2 passes through high-level signaling or dynamic control
Signaled terminal.Meanwhile base station side is mapped to by high-level signaling or dynamic control signaled terminal, the first data flow
DMRS port 1 and DMRS port 2, second data flow map to DMRS port 3 and DMRS port 4.
End side (for using terminal as receiving terminal)：
L-th of OFDM symbol k-th of subcarrier reception to data be expressed as：
It is further represented as：
Where it is assumed that channel HK, lWith precoding WK, lIt is remained unchanged in chronomere's (subframe).Transmitting terminal phase
On the diagonal of noise matrix,Member be known as N1,Member be known as N-N1.
Receiving terminal receives DMRS reference signals in third OFDM symbol.By taking first reception antenna port as an example, by
DMRS port 1 estimates composite channel and estimates composite channelIt is estimated by DMRS port 2It is estimated by DMRS port 3And it is estimated by DMRS port 4On symbol, the channel of all subcarriers is being estimated that using channel interpolation where DMRS, according to
Fig. 4's it is assumed that k=1,2 ..., 12 here.
The above-mentioned composite channel of each DMRS port estimated is known as the first channel estimation value.
Receiving terminal receives 2 port PTRS, and estimate composite channel using PTRS ports 1 from the 4th OFDM symbolComposite channel is estimated using PTRS ports 2
The above-mentioned composite channel of each PTRS ports estimated is known as second channel estimated value.
Receiving terminal receives transmitting terminal and is mapped one by one with DMRS1 and DMRS2 respectively by the PTRS1 and PTRS2 of signaled
Information.According to this information, it is divided by using the channel estimation results of PTRS1 and the channel estimation results of DMRS1, obtains
The phase that l-th of symbol is undergone relative to first group of antenna port of transmitting terminal of the 3rd symbol on one reception antenna port
Variation, is expressed as
Similarly, according to this information, it is divided by using the channel estimation results of PTRS2 and the channel estimation results of DMRS2,
Show that l-th of symbol is undergone relative to second group of antenna port of transmitting terminal of the 3rd symbol on first reception antenna port
Phase change, be expressed as
Receiving terminal receives transmitting terminal and maps to DMRS port 1 and 2, the second data flow by the first data flow of signaled
Map to the information of DMRS port 3 and 4.It according to this information, obtains on first reception antenna or antenna port, in l-th of symbol
Number k-th of subcarrier on the channel estimation of channel that is undergone of two data streams, be expressed as
The channel estimation of first data flow experience：
The channel estimation of second data flow experience：
The similar channel estimation knot that can obtain the channel that two data streams are undergone on second reception antenna port
Fruit.According to above channel estimation results, the demodulation to user data can be realized.
Other subcarriers can be obtained similarly, be repeated no more.
Embodiment two
Fig. 4 and Fig. 5 is also applied for the embodiment two.
Base station side：
By taking k-th of subcarrier as an example, pre-coding matrix is expressed as used in user data transmission
Wherein,KnowFor N1× 1 column vector corresponds respectively to pre- used in first and second data flows
In coding, weights used in preceding N1 antenna port.KnowFor (N-N1The column vector of) × 1 corresponds respectively to
One and second data flow used in precoding, weights used in rear N-N1 antenna port.
DMRS port 1 is transmitted on the preceding N1 antenna port of transmitting terminal, is distributed in subcarrier d1=4, on 8,12.It is right
DMRS1 on subcarrier d1 is usedCarry out precoding.
DMRS port 2 is transmitted on the rear N-N1 antenna port of transmitting terminal, is distributed in subcarrier d2=3, on 7,11.
For the DMRS2 on subcarrier d2, useCarry out precoding.
DMRS port 3 is transmitted on the preceding N1 antenna port of transmitting terminal, is distributed in subcarrier d3=2, on 6,10.It is right
DMRS3 on subcarrier d3 is usedCarry out precoding.
DMRS port 4 is transmitted on the rear N-N1 antenna port of transmitting terminal, is distributed in subcarrier d4=1, on 5,9.
For the DMRS4 on subcarrier d4, useCarry out precoding.
2 PTRS ports are used to estimate the phase noise of two parts.Wherein PTRS ports 1 are in the preceding N1 day of transmitting terminal
It transmits, uses on line end mouthPrecoding is carried out, PTRS ports 2 are uploaded in the rear N-N1 antenna port of transmitting terminal
It is defeated, it usesCarry out precoding.Fig. 5 gives the schematic diagram of the transmission.
PTRS1 is mapped to base station side the information of DMRS1 and DMRS3 and PTRS2 maps to the information of DMRS2 and DMRS4
Pass through high-level signaling or dynamic control signaled terminal.Meanwhile base station side passes through high-level signaling or dynamic control signaled
Terminal, the first data flow map to DMRS 1 and DMRS2, and the second data flow maps to DMRS3 and DMRS4.
End side：
L-th of symbol k-th of subcarrier reception to data be expressed as：
It is further represented as：
Where it is assumed that channel HK, lWith precoding WK, lIt is remained unchanged in chronomere's (subframe).Transmitting terminal phase
On the diagonal of noise matrix,Member be known as N1,Member be known as N-N1.
Receiving terminal receives DMRS reference signals in third OFDM symbol.By taking first reception antenna port as an example, by
DMRS port 1 estimates composite channel and estimates composite channelIt is estimated by DMRS port 2It is estimated by DMRS port 3And it is estimated by DMRS port 4On symbol, the channel of all subcarriers is being estimated that using channel interpolation where DMRS, according to
Fig. 4's it is assumed that k=1,2 ..., 12 here.
Receiving terminal receives 2 port PTRS, and estimate using PTRS ports 1 from the 4th OFDM symbolIt is estimated using PTRS ports 2
End side reception base station side maps to the information of DMRS1 and DMRS3 by the PTRS1 of signaled and PTRS2 reflects
The information of DMRS2 and DMRS4 are incident upon, transmitting terminal first group of l-th of symbol relative to the 3rd symbol is calculated using following
The phase change that antenna port is undergone, is expressed as：
Similarly, the phase undergone in l-th of symbol relative to second group of antenna port of transmitting terminal of the 3rd symbol is obtained
Variation, is expressed as：
It receives base station side and DMRS port 1 and 2 is mapped to by the first data flow of signaled, the second data flow maps to
The information of DMRS port 3 and 4.According to this information, obtain on first reception antenna or antenna port, in the kth of l-th of symbol
The channel estimation for the channel that two data streams are undergone, is expressed as on a subcarrier：
The channel estimation of first data flow experience：
The channel estimation of second data flow experience：
The similar channel estimation knot that can obtain the channel that two data streams are undergone on second reception antenna port
Fruit.According to above channel estimation results, the demodulation to user data can be realized.
Other subcarriers can be obtained similarly, be repeated no more.
Based on identical inventive concept, the embodiment of the present invention also provides a kind of sending device, as shown in fig. 6, the transmission fills
Terminal inner can be integrated with or be integrated in inside of base station by putting, for making terminal or base station that there is sending function, including：
Data flow transmitting element 601 flow to reception device, each data flow for transmitting R data in M antenna sets
It is transmitted from M antenna sets after precoding, the phase noise of the antenna port in same antenna group is identical, and M is positive integer；
PTRS transmitting elements 602, for sending S PTRS to the reception device, each PTRS is after precoding from M
It is transmitted in K antenna sets in a antenna sets, the K antenna sets have identical phase noise；
DMRS transmitting elements 603, for sending M*R DMRS to the reception device, each DMRS is after precoding
It is transmitted from an antenna sets, wherein, a PTRS at least corresponds to a DMRS, and the PTRS and DMRS with correspondence are used
Identical antenna sets are transmitted, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
Optionally, the sending device further includes mapping relations transmitting element 604, for determining between PTRS and DMRS
Mapping relations, and pass through high-level signaling or the mapping relations are sent to the reception device by dynamic control signaling；Or
Mapping relations between PTRS and DMRS are made an appointment by the sending device and the reception device.
Optionally, the method further includes mapping relations transmitting element 604, for passing through high-level signaling or dynamic control letter
It enables and the mapping relations of data flow and DMRS is sent to the reception device；Or
Data flow and the mapping relations of DMRS are made an appointment by the sending device and the reception device.
Optionally, the precoding that the PTRS is used, as the data flow corresponding to the corresponding DMRS of the PTRS in the PTRS
Part weights on sub-carriers in used precoding form, the part weights is transmit day used in the PTRS
Weights corresponding to line group.
Optionally, the precoding that the DMRS is used, by the corresponding data flows of the DMRS the DMRS institute on sub-carriers
The part weights of the precoding used are formed, and the part weights are the power transmitted used in the DMRS corresponding to antenna sets
Value.
Based on identical inventive concept, the embodiment of the present invention provides a kind of reception device, as shown in fig. 7, comprises：
First channel estimation value determination unit 701, the M*R that the transmitting terminal for being received according to each antenna port is sent
A DMRS obtains corresponding first channel estimation values of each DMRS, wherein, the transmitting terminal includes M antenna sets, the same antenna
The phase noise of antenna port in group is identical, and M is positive integer, and the number that R is the data flow received, and each DMRS passes through
It is transmitted from an antenna sets after precoding；
Second channel estimated value determination unit 702, the transmitting terminal for being received according to each antenna port are sent
S PTRS, obtain the corresponding second channel estimated values of each PTRS, wherein, each PTRS is after precoding from M antenna
It is transmitted in K antenna sets in group, the K antenna sets have identical phase noise；
Phase change determination unit 703, for according to corresponding first channel estimation values of the DMRS, PTRS correspondences
Second channel estimated value and PTRS and DMRS mapping relations, determine that the antenna sets of the corresponding transmitting terminals of each DMRS exist
Relative to the phase change on symbol where DMRS on symbol where PTRS；
Channel estimation value determination unit 704, for the phase change and data of each antenna sets according to the transmitting terminal
The mapping relations of stream and DMRS, determine that each data flow in R data flow is received where PTRS on symbol is corresponding
Channel estimation value；
Resolution unit 705, for according to the determining corresponding channel estimation value of each data flow, parsing each data flow.
Optionally, the phase change determination unit 703, is specifically used for：
For each PTRS, according to the mapping relations of PTRS and DMRS, the corresponding DMRS of the PTRS are determined；It determines described
The corresponding DMRS of PTRS are in the first channel estimation value of the subcarrier where the PTRS；By the corresponding DMRS of the PTRS in institute
The first channel estimation value and the corresponding second channel estimated values of the PTRS for stating the subcarrier where PTRS are compared, and are obtained
The antenna sets of the corresponding sending device of each DMRS where PTRS on symbol relative to the phase where DMRS on symbol
Variation.
Optionally, the reception device further includes mapping relations receiving unit 706, is controlled for passing through high-level signaling or dynamic
Signaling processed receives the mapping relations of the PTRS and DMRS of the sending device transmission；Or
Mapping relations between PTRS and DMRS are made an appointment by the sending device and the reception device.
Optionally, the reception device further includes mapping relations receiving unit 706, is controlled for passing through high-level signaling or dynamic
Signaling processed receives the data flow of the sending device transmission and the mapping relations of DMRS；Or
The data flow and the mapping relations of DMRS are made an appointment by the sending device and the reception device.
The embodiment of the present invention, transmitting terminal transmit R data in M antenna sets and flow to receiving terminal, send S PRTS to connecing
Receiving end, wherein, each PTRS transmits and sends M*R after precoding from the K antenna sets with same phase noise
A DMRS is to receiving terminal, and each DMRS is transmitted after precoding from an antenna sets, wherein the antenna end in same group
The phase noise of mouth is identical, the embodiment of the present invention, by the way that each DMRS is transmitted in different antennae group respectively, while will be each
PTRS is transmitted in the antenna sets with same phase noise respectively, wherein the antenna port in same group is made an uproar with same phase
Sound so that these information that receiving terminal can be sent based on transmitting terminal calculate the phase noise of each antenna sets of transmitting terminal, into
And can phase compensation be carried out so as to eliminate the influence of phase noise according to the phase noise of calculating, ensure the accurate biography of data
It is defeated.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device of function specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (18)
1. a kind of data transmission method, which is characterized in that including：
Transmitting terminal transmits R data in M antenna sets and flow to receiving terminal, and each data flow is after precoding from M antenna
It is transmitted in group, the phase noise of the antenna port in same antenna group is identical, and M is positive integer；
The transmitting terminal sends S Phase Tracking reference signal PTRS to the receiving terminal, and each PTRS is after precoding from M
It is transmitted in K antenna sets in a antenna sets, the K antenna sets have identical phase noise；
The transmitting terminal sends M*R DMRS to the receiving terminal, and each demodulated reference signal DMRS is after precoding from one
It is transmitted in a antenna sets；
Wherein, a PTRS at least correspond to a DMRS, have correspondence PTRS and DMRS using identical antenna sets into
Row transmission, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
2. data transmission method according to claim 1, which is characterized in that the method further includes：
The transmitting terminal determines the mapping relations between PTRS and DMRS, and passes through high-level signaling or dynamic control signaling by described in
Mapping relations are sent to the receiving terminal；Or
Mapping relations between PTRS and DMRS are made an appointment by the transmitting terminal and the receiving terminal.
3. data transmission method according to claim 1, which is characterized in that the method further includes：
The mapping relations of data flow and DMRS are sent to described connect by the transmitting terminal by high-level signaling or dynamic control signaling
Receiving end；Or
Data flow and the mapping relations of DMRS are made an appointment by the transmitting terminal and the receiving terminal.
4. data transmission method according to claim 1, which is characterized in that the precoding that the PTRS is used, by this
Data flow corresponding to the corresponding DMRS of PTRS the PTRS the part weights structure in used precoding on sub-carriers
Into the part weights are the weights transmitted used in the PTRS corresponding to antenna sets.
5. data transmission method according to claim 1, which is characterized in that the precoding that the DMRS is used, by this
The corresponding data flows of DMRS are formed in the part weights of the DMRS precodings used on sub-carriers, and the part weights are
Transmit the weights corresponding to antenna sets used in the DMRS.
6. a kind of data transmission method, which is characterized in that including：
The M*R DMRS that the transmitting terminal that receiving terminal is received according to each antenna port is sent obtains each DMRS corresponding the
One channel estimation value, wherein, the transmitting terminal includes M antenna sets, the phase noise phase of the antenna port in same antenna group
Together, M is positive integer, and the number that R is the data flow received, each DMRS are passed after precoding from an antenna sets
It is defeated；
The S PTRS that the receiving terminal is sent according to the transmitting terminal that each antenna port receives, obtains each PTRS pairs
The second channel estimated value answered, wherein, each PTRS is transmitted after precoding from K antenna sets in M antenna sets, institute
K antenna sets are stated with identical phase noise；
The receiving terminal according to corresponding first channel estimation values of the DMRS, the corresponding second channel estimated values of the PTRS and
The mapping relations of PTRS and DMRS, determine the antenna sets of the corresponding transmitting terminals of each DMRS where PTRS on symbol it is opposite
In the phase change where DMRS on symbol；
The receiving terminal is according to the phase change and data flow and the mapping relations of DMRS of each antenna sets of the transmitting terminal, really
The corresponding channel estimation value of each data flow in the R data flow received on symbol where being scheduled on PTRS；
The receiving terminal parses each data flow according to the determining corresponding channel estimation value of each data flow.
7. data transmission method according to claim 6, which is characterized in that the receiving terminal is corresponding according to the DMRS
The mapping relations of the corresponding second channel estimated value of first channel estimation value, the PTRS and the PTRS and DMRS, determine institute
State the antenna sets of the corresponding transmitting terminals of each DMRS where PTRS on symbol relative to the phase change where DMRS on symbol,
Including：
For each PTRS, the receiving terminal determines the corresponding DMRS of the PTRS according to the mapping relations of PTRS and DMRS；Really
Determine first channel estimation values of the corresponding DMRS of the PTRS in the subcarrier where the PTRS；The PTRS is corresponding
DMRS is carried out in the first channel estimation value of the subcarrier where the PTRS and the corresponding second channel estimated values of the PTRS
Compare, obtain the antenna sets of the corresponding transmitting terminals of each DMRS where PTRS on symbol relative to where DMRS on symbol
Phase change.
8. data transmission method according to claim 6, which is characterized in that the receiving terminal passes through high-level signaling or dynamic
Control signaling receives the mapping relations of the PTRS and DMRS of the transmitting terminal transmission；Or
Mapping relations between PTRS and DMRS are made an appointment by the transmitting terminal and the receiving terminal.
9. data transmission method according to claim 6, which is characterized in that the receiving terminal passes through high-level signaling or dynamic
Control signaling receives the data flow of the transmitting terminal transmission and the mapping relations of DMRS；Or
The data flow and the mapping relations of DMRS are made an appointment by the transmitting terminal and the receiving terminal.
10. a kind of sending device, which is characterized in that including：
Data flow transmitting element flow to reception device for transmitting R data in M antenna sets, and each data flow is by pre-
It is transmitted from M antenna sets after coding, the phase noise of the antenna port in same antenna group is identical, and M is positive integer；
PTRS transmitting elements, for sending S PTRS to the reception device, each PTRS is after precoding from M antenna
It is transmitted in K antenna sets in group, the K antenna sets have identical phase noise；
DMRS transmitting elements, for sending M*R DMRS to the reception device, each DMRS is after precoding from a day
It is transmitted in line group, wherein, a PTRS at least corresponds to a DMRS, and the PTRS and DMRS with correspondence use identical day
Line group is transmitted, the M DMRS port that each data flow correspondence is transmitted in M different antennae group respectively.
11. sending device according to claim 10, which is characterized in that the sending device further includes mapping relations transmission
Unit for determining the mapping relations between PTRS and DMRS, and passes through high-level signaling or dynamic control signaling by the mapping
Relationship is sent to the reception device；Or
Mapping relations between PTRS and DMRS are made an appointment by the sending device and the reception device.
12. sending device according to claim 10, which is characterized in that the method further includes mapping relations and sends list
The mapping relations of data flow and DMRS are sent to the reception device by member for passing through high-level signaling or dynamic control signaling；
Or
Data flow and the mapping relations of DMRS are made an appointment by the sending device and the reception device.
13. sending device according to claim 10, which is characterized in that the precoding that the PTRS is used, by the PTRS
Data flow corresponding to corresponding DMRS the PTRS part weights on sub-carriers in used precoding form, institute
It is the weights transmitted used in the PTRS corresponding to antenna sets to state part weights.
14. sending device according to claim 10, which is characterized in that the precoding that the DMRS is used, by the DMRS
Corresponding data flow is formed in the part weights of the DMRS precodings used on sub-carriers, and the part weights are transmission
Weights used in the DMRS corresponding to antenna sets.
15. a kind of reception device, which is characterized in that including：
First channel estimation value determination unit, the M*R DMRS that the transmitting terminal for being received according to each antenna port is sent,
Corresponding first channel estimation values of each DMRS are obtained, wherein, the transmitting terminal includes M antenna sets, in same antenna group
The phase noise of antenna port is identical, and M is positive integer, and the number that R is the data flow received, and each DMRS passes through precoding
It is transmitted from an antenna sets afterwards；
Second channel estimated value determination unit, the S that the transmitting terminal for being received according to each antenna port is sent are a
PTRS obtains the corresponding second channel estimated values of each PTRS, wherein, each PTRS is after precoding from M antenna sets
K antenna sets on transmit, the K antenna sets have identical phase noise；
Phase change determination unit, for according to corresponding first channel estimation values of the DMRS, the PTRS corresponding second
The mapping relations of channel estimation value and PTRS and DMRS determine the antenna sets of the corresponding transmitting terminals of each DMRS in PTRS institutes
Relative to the phase change where DMRS on symbol on symbol；
Channel estimation value determination unit, for the phase change and data flow and DMRS of each antenna sets according to the transmitting terminal
Mapping relations, determine each corresponding channel estimation of data flow in the R data flow received on symbol where PTRS
Value；
Resolution unit, for according to the determining corresponding channel estimation value of each data flow, parsing each data flow.
16. reception device according to claim 15, which is characterized in that the phase change determination unit is specifically used for：
For each PTRS, according to the mapping relations of PTRS and DMRS, the corresponding DMRS of the PTRS are determined；Determine the PTRS
Corresponding DMRS is in the first channel estimation value of the subcarrier where the PTRS；By the corresponding DMRS of the PTRS described
The corresponding second channel estimated value of the first channel estimation value and the PTRS of subcarrier where PTRS is compared, and obtains institute
The antenna sets for stating the corresponding sending devices of each DMRS are becoming where PTRS on symbol relative to the phase where DMRS on symbol
Change.
17. reception device according to claim 15, which is characterized in that the reception device further includes mapping relations reception
Unit closes for passing through the mapping of PTRS and DMRS that high-level signaling or the dynamic control signaling reception sending device are sent
System；Or
Mapping relations between PTRS and DMRS are made an appointment by the sending device and the reception device.
18. reception device according to claim 15, which is characterized in that the reception device further includes mapping relations reception
Unit receives the data flow of the sending device transmission and the mapping pass of DMRS for passing through high-level signaling or dynamic control signaling
System；Or
The data flow and the mapping relations of DMRS are made an appointment by the sending device and the reception device.
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