CN103974418B - DMRS processing method and processing device - Google Patents
DMRS processing method and processing device Download PDFInfo
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- CN103974418B CN103974418B CN201310027132.9A CN201310027132A CN103974418B CN 103974418 B CN103974418 B CN 103974418B CN 201310027132 A CN201310027132 A CN 201310027132A CN 103974418 B CN103974418 B CN 103974418B
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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
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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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
- H04L5/0037—Inter-user or inter-terminal allocation
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Abstract
The invention discloses a kind of DMRS processing method and processing devices, wherein this method comprises: UE receives the first signaling from base station；UE generates multiple first DMRS sequences according to the first signaling；DMRS sequence is combined to generate the 2nd DMRS sequence by UE.By with the present invention, it solves in the related technology, under MU-MIMO fractional bandwidth overlapping cases between different user DMRS problem that can not be orthogonal, and then more than two user DMRS's of support distribution same asset position is absolute orthogonal, support the DMRS orthogonality under any portions of bandwidth Overlay scenes, the limitation of multiuser MIMO scene dispatching is overcome, to improve the transmission performance of system.
Description
Technical field
The present invention relates to wireless communication fields, in particular to a kind of around uplink demodulation reference signal
(Demodulation Reference Signal, referred to as DMRS) processing method.
Background technique
Long term evolution (Long Term Evolution, referred to as LTE) project is 3rd generation mobile communication technology (Third
Generation, referred to as 3G) evolution, but it is not the fourth generation mobile communication technology (Fourth that people generally misread
Generation, referred to as 4G), but a transition between 3G and 4G technology, it improves and enhances the aerial access of 3G
Technology, it using orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, referred to as
OFDM) technology and multiple-input and multiple-output (Multiple Inputs and Multiple Outputs, referred to as MIMO) skill
Sole criterion of the art (i.e. multi-antenna technology) as wireless network evolution.Advanced long term evolution (LTE-Advanced, referred to as
LTE-A) be LTE technology subsequent evolution.In order to meet the various demand parameters of 4G, for several key technology quilts of LTE-A
It proposes, including carrier wave polymerization, cooperative multi-point send and receive, relay transmission and multiple antennas enhance etc..Wherein, with downlink
(Downlink, referred to as DL) is similar, and the multiple antennas enhancing of uplink (Uplink, referred to as UL) equally includes single user
The enhancing of (Single User, referred to as SU) multiple antennas enhances with multi-user's (Multiple User, referred to as MU) multiple antennas.
Uplink reference signals in LTE are largely based on ZC(Zadoff-Chu) sequence, these sequences meet with reference to letter
The ideal characterisitics of number (Reference Signal, referred to as RS), 0db cubic metric (Cubic Metric, referred to as CM), reason
The circulation auto-correlation and optimal cross-correlation thought.Good cross-correlation to receive signal, and to target sequence to make time domain related
Afterwards, interference signal average extension in the time domain, it can be ensured that desired channel tap more reliable detection.However, in practice
The CM of one ZC sequence is from theoretical 0db with the decline of Nai Longsite sample rate, this is because there is not at the both ends of sequence
The protection subcarrier used, and lead to the over-sampling that ZC sequence is equivalent in time domain.The length of RS sequence is equal to distribution word carrier wave
Quantity, this is the multiple of each resource block (Resource Block, referred to as RB) number of subcarriers.In order to allow a cell
The uplink transmission for supporting different bandwidth, is distributed, it is necessary to a cell be allowed to distribute for the ascending resource of every kind of difference RB
At least one RS sequence, the RS sequence actually used carry out different cyclic shifts by the basic RS sequence to corresponding length and obtain
It arrives.It is assigned to the user equipment (User Equipment, referred to as UE) of different sub-carrier or RB group, is sent out on these sub-carriers
RS signal is sent, and RS separation is therefore realized by FDM, however, in some cases, UE can be distributed and be passed on the same set of subcarriers
It is defeated, such as uplink multi-users MIMO, in such cases, there is interference in RS each other, it is therefore desirable to which certain methods separation comes
Using different basic sequences be from the RS of different transmitters, on the different UE that transmit in identical RB it is undesirable, because of basic sequence
Between the cross correlation of non-zero can reduce the channel estimating performance of eNodeB, more suitable method is so that the RS of different UE is complete
It is complete orthogonal.Theoretically, it can be realized by the FDM of RS in same subcarrier group, then this can reduce RS sequence length and can be used
Different RS sequences quantity, this is particularly disadvantageous for low-bandwidth transmission.Therefore in LTE, occupy same sub-carrier RS it
Between orthogonality a characteristic of ZC sequence be utilized realize, i.e. any cyclic shift of ZC sequence and same ZC sequence it
Between correlation be 0, when channel impulse response has limit for length, the different circulations of same RS basic sequence are can be used in different transmitters
Displacement, as long as cyclic shift is longer than channel impulse response, can keep orthogonal between RS.
For Physical Uplink Shared Channel (Physical uplink shared channel, referred to as PUSCH) data
Or Physical Uplink Control Channel (Physical Uplink Control Channel, referred to as PUCCH) control transmission,
DMRS occupies the identical position RB.Therefore, RB sequence length is equal to the son for distributing to UE for PUSCH or PUCCH transmission
The quantity of carrier wave.
If it is discrete resource allocation, then the DMRS transmitted on PUSCH by this resource of Adaptive matching point
Match, according to the RB number distributed in total, generates a DMRS basic sequence, then decompose it on RB of PUSCH transmission.
Specifically, for LTE system, since resource allocation is with 12 subcarriers, i.e. 1 RB is partition size,
Therefore, DMRS sequence length is only 12 multiple.For being more than 24 sequence length, corresponding DMRS basic sequence is defined as
Length is the cyclic extensions of the Zadoff-Chu sequence of MZC, wherein MZC is the largest prime less than or equal to DMRS sequence length.
For being equal to 12 or 24 sequence length, corresponding DMRS basic sequence is defined as special four obtained by computer search
Phase phase-shift keying (PSK) (Quadrature Phase Shift Keying, referred to as QPSK) sequence.Every kind of DMRS sequence length is corresponding
30 basic sequence groups, each basic sequence group include one or two basic sequence.Wherein, the DMRS sequence of some time slot actual use
For the cyclic shift (corresponding frequency domain on linear phase shift) of some basic sequence in some DMRS basic sequence group of corresponding length, often
A DMRS basic sequence can at most define 12 kinds of cyclic shifts.Derived from identical DMRS basic sequence, but with different cyclic shifts
The cross correlation of DMRS sequence is zero, be it is orthogonal, derived from the cross correlation non-zero of the DMRS sequence of different basic sequences, be
It is non-orthogonal.
According to the bandwidth allocation type of multiplexing UE, uplink multi-users multiple-input and multiple-output (Multiple User-
Multiple Inputs and Multiple Outputs, referred to as MU-MIMO) it transmits and is divided into two kinds, i.e., bandwidth is complete
The folded uplink MU-MIMO transmission (the different UE bandwidth of multiplexing are completely overlapped) of the full weight uplink MU-MIMO Chong Die with portions of bandwidth
Transmission (the different UE portions of bandwidth of multiplexing are overlapped).Wherein, for above two uplink MU-MIMO transmission type, multiplexing is not
It in the DMRS of bandwidth overlay part transmitting (completely overlapped Chong Die with portions of bandwidth including above-mentioned bandwidth) preferably should be phase with UE
It is mutually orthogonal.In lte-a system, the uplink MU-MIMO transmission completely overlapped for bandwidth, such as attached drawing 1, attached drawing 2 and attached drawing 3
It is shown, by using derived from identical DMRS basic sequence different cyclic shifts (Cyclic Shift, referred to as CS) sequence and/
Or orthogonal covering codes (Orthogonal Cover Code, referred to as OCC), the different DMRS from different multiplexing UE can be real
It is existing mutually orthogonal.For the uplink MU-MIMO transmission of portions of bandwidth overlapping, as shown in Fig. 4, the difference from different multiplexing UE
DMRS can only be realized mutually orthogonal by using OCC.
With the continuous evolution of mobile communications network, the type of business that mobile terminal or UE are supported will be more and more abundant.By
It is typically different in the data volume of different service types transmission, therefore, under identical transmission conditions, what different service types needed
Transmission bandwidth is generally also different.If scheduler is forced to different service types and distributes identical transmission bandwidth, can make
At the loss of spectrum efficiency.For hot spot covering scene, uplink MU-MIMO has become the necessary means for promoting network capacity.
In view of factors above, the uplink MU-MIMO transmission type of portions of bandwidth overlapping will become the important and general of subsequent evolvement network
Time transmission mode.But the different DMRS of the existing different multiplexing UE that portions of bandwidth overlapping is realized by using OCC are mutual
Orthogonal method, the maximum multiplexing UE number for having the following deficiencies: that (1) is supported is two, and which has limited the further of network capacity
It is promoted；(2) if the coherence time of channel is greater than the time domain span of subframe (including two time slots), this method can be used,
I.e. its application or limited performance are in UE movement speed or Doppler frequency shift.
Summary of the invention
The present invention provides a kind of DMRS processing method and processing devices, at least to solve in the related technology, the part MU-MIMO band
Under wide overlapping cases between different user DMRS problem that can not be orthogonal.
According to an aspect of the invention, there is provided a kind of DMRS processing method, comprising: UE receives first from base station
Signaling；The UE generates multiple first DMRS sequences according to first signaling；The DMRS sequence is combined by the UE
To generate the 2nd DMRS sequence.
It preferably, include resource allocation index instruction information and the virtual subdistrict mark ID of the UE in first signaling
In the case where information, the UE is more according to the virtual subdistrict id information generation that the resource allocation indexes instruction information and the UE
A first DMRS sequence, and instruction information is indexed according to the resource allocation and combines the multiple first DMRS sequence.
Preferably, the UE is raw by the virtual subdistrict id information for indexing instruction information and the UE according to the resource allocation
At multiple first DMRS sequences, and instruction information is indexed according to the resource allocation and combines the multiple first DMRS sequence packet
Include: the UE generates N number of length according to the virtual subdistrict id information that the resource allocation indexes instruction information and the UE as T
The first DMRS sequence of resource block RB；Indexing instruction information to combine N number of length according to the resource allocation is T RB
The first DMRS sequence to generate the complete 2nd DMRS sequence；Wherein, the N is the natural number more than or equal to 1, described
T is the natural number more than or equal to 1.
Preferably, the UE is generated according to the virtual subdistrict id information that the resource allocation indexes instruction information and the UE
The first DMRS sequence that N number of length is T resource block RB includes: the UE according to resource allocation index instruction information
The cyclic shift index and motif column index of each transport layer of the UE are determined with the virtual subdistrict id information of the UE；It is described
UE generates the DMRS basic sequence that length is T RB according to the motif column index；The UE is T RB's according to the length
The cyclic shift of DMRS basic sequence and each transport layer index generates the first DMRS sequence that N number of length is T RB
Column.
Preferably, instruction information is indexed according to the resource allocation and combines the first DMRS sequence that N number of length is T RB
Column with generate the complete 2nd DMRS sequence include: the UE according to resource allocation index will N number of length for T RB
The first DMRS sequence be combined, to obtain the complete 2nd DMRS sequence, wherein the resource allocation index
It is to index instruction information according to the resource allocation to obtain.
Preferably, in the motif column index that first signaling includes: transport layer cyclic shift index and the DMRS
In the case of, the UE is indexed according to the transport layer cyclic shift and multiple first DMRS sequences of motif column index generation
Column, and combine the multiple first DMRS sequence.
Preferably, the UE will be generated according to transport layer cyclic shift index and the motif column index multiple the
One DMRS sequence, and combining the multiple first DMRS sequence to include: the UE generate length according to the motif column index is T
The DMRS basic sequence of a RB；The UE is the T DMRS basic sequence of RB and following for each transport layer according to the length
Ring displacement index generates the first DMRS sequence that N number of length is T RB；The UE is indexed according to resource allocation by the N
A length is that the first DMRS sequence of T RB is combined, to obtain the complete 2nd DMRS sequence, wherein institute
Stating resource allocation index is that the resource allocation index instruction information sent according to base station obtains.
Preferably, the value of the T is 1.
According to another aspect of the present invention, a kind of DMRS processing unit is provided, comprising: receiving module comes for receiving
The first signaling from base station；Generation module, for generating multiple first DMRS sequences according to first signaling；Composite module,
The DMRS sequence is combined to generate the 2nd DMRS sequence for the UE.
Preferably, the generation module is also used in first signaling include resource allocation index instruction information and institute
State UE virtual subdistrict mark id information in the case where, according to the resource allocation index instruction information and the UE it is virtual small
Area's id information generates multiple first DMRS sequences；The composite module is also used in first signaling include resource allocation rope
In the case where drawing instruction information, instruction information is indexed according to the resource allocation and combines the multiple first DMRS sequence.
Preferably, the generation module includes: the first generation unit, for indexing instruction information according to the resource allocation
The first DMRS sequence that N number of length is T resource block RB is generated with the virtual subdistrict id information of the UE；Second generates list
Member, the first DMRS sequence for combining N number of length according to resource allocation index instruction information as T RB is to generate
The complete 2nd DMRS sequence；Wherein, the N is the natural number more than or equal to 1, and the T is the nature more than or equal to 1
Number.
Preferably, the generation module, be also used to first signaling include transport layer cyclic shift index and it is described
In the case where the motif column index of DMRS, generated according to transport layer cyclic shift index and the motif column index multiple
First DMRS sequence；The composite module is also used to combine according to transport layer cyclic shift index and the basic sequence rope
The multiple first DMRS sequence caused.
Preferably, the generation module includes: third generation unit, is for generating length according to the motif column index
The DMRS basic sequence of T RB；4th generation unit, for according to DMRS basic sequence that the length is T RB and it is described respectively
The cyclic shift index of a transport layer generates the first DMRS sequence that N number of length is T RB；The composite module includes:
Assembled unit, for the first DMRS sequence that N number of length is T RB to be combined according to resource allocation index,
To obtain the complete 2nd DMRS sequence, wherein the resource allocation index is the resource allocation rope sent according to base station
Draw what instruction information obtained.
Present invention employs following methods: UE receives the first signaling from base station；The UE is according to first signaling
Generate multiple first DMRS sequences；The DMRS sequence is combined to generate the 2nd DMRS sequence by the UE.Pass through utilization
The present invention solves in the related technology, under MU-MIMO fractional bandwidth overlapping cases between different user DMRS can not be orthogonal ask
Topic, and then more than two user DMRS's of support distribution same asset position is absolute orthogonal, and any portions of bandwidth is supported to be overlapped
DMRS orthogonality under scene, overcomes the limitation of multiuser MIMO scene dispatching, to improve the transmission performance of system.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is to realize that bandwidth is completely overlapped not according to the different CS sequences by using DMRS basic sequence of the relevant technologies
The orthogonal schematic diagram with multiplexing UE difference DMRS；
Fig. 2 is the different DMRS that the completely overlapped different multiplexing UE of bandwidth are realized using OCC by using the relevant technologies
Orthogonal schematic diagram；
Fig. 3 is to realize band by the different CS sequences and OCC according to the use of the relevant technologies derived from identical DMRS basic sequence
The different DMRS of the completely overlapped different multiplexing UE of width orthogonal schematic diagram；
Fig. 4 is the different DMRS according to the different multiplexing UE for realizing portions of bandwidth overlapping by using OCC of the relevant technologies
Orthogonal schematic diagram；
Fig. 5 is the flow chart of DMRS processing method according to an embodiment of the present invention；
Fig. 6 is the structural schematic diagram one of DMRS processing unit according to an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of DMRS processing unit generation module according to an embodiment of the present invention；
Fig. 8 is the structural schematic diagram two of DMRS processing unit according to an embodiment of the present invention；
Fig. 9 is the structural schematic diagram three of DMRS processing unit according to an embodiment of the present invention；
Figure 10 is that two UE according to the preferred embodiment of the invention for carrying out MU-MIMO pairing are corresponding on the RB of scheduling
DMRS sequence diagram；
Figure 11 be embodiment one according to the preferred embodiment of the invention UE1 and UE2 on the RB of scheduling corresponding DMRS
Sequence diagram；
Figure 12 be embodiment one according to the preferred embodiment of the invention UE1 and UE2 on the RB of scheduling corresponding DMRS
Sequence diagram.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
Based between different user under MU-MIMO fractional bandwidth overlapping cases in the related technology DMRS can not be orthogonal ask
Topic, the embodiment of the invention provides a kind of DMRS processing method, the process of this method can be as shown in figure 5, include step S502
To step S506:
Step S502, UE receive the first signaling from base station；
Step S504, UE generate multiple first DMRS sequences according to the first signaling；
DMRS sequence is combined to generate the 2nd DMRS sequence by step S506, UE.
By the above method with the present embodiment, it can solve MU-MIMO fractional bandwidth overlapping cases in the related technology
The problem that can not be orthogonal of DMRS between lower different user, and then support more than two user DMRS of distribution same asset position
It is absolutely orthogonal, it supports the DMRS orthogonality under any portions of bandwidth Overlay scenes, overcomes the limit of multiuser MIMO scene dispatching
System, to improve the transmission performance of system.
In the first above-mentioned signaling, much information can be carried, such as resource allocation index instruction information and UE
Virtual subdistrict identifies (Identifier, referred to as ID) information, then at this point, UE can be calculated according to above- mentioned information and be generated
2nd DMRS sequence.Certainly, the first signaling can also carry the motif column index of transport layer cyclic shift index and DMRS, such
Situation is that the base station of the first signaling of transmission is the motif column index that UE has calculated transport layer cyclic shift index and DMRS, concurrently
The case where giving UE, such situation save the calculation amount of the side UE.
If the first signaling includes the virtual subdistrict id information of resource allocation index instruction information and UE, UE can basis
The virtual subdistrict id information of resource allocation index instruction information and UE generate multiple first DMRS sequences, and according to resource allocation rope
Draw instruction information and combines multiple first DMRS sequences.When specific implementation, UE indexes the void of instruction information and UE according to resource allocation
Quasi- cell ID information generates the first DMRS sequence that N number of length is T resource block RB；Instruction information group is indexed according to resource allocation
Closing N number of length is the first DMRS sequence of T RB to generate complete 2nd DMRS sequence, wherein N is oneself more than or equal to 1
So number, T are the natural number more than or equal to 1, wherein the quantity T of RB is optimal selection when being 1.
In implementation process, UE determines UE's according to the virtual subdistrict id information that resource allocation indexes instruction information and the UE
The cyclic shift index and motif column index of each transport layer；Determined cyclic shift index and motif column index after, UE according to
Motif column index generates the DMRS basic sequence that length is T RB；Further according to the DMRS basic sequence and each biography that length is T RB
The cyclic shift index of defeated layer generates the first DMRS sequence that N number of length is T RB.UE is indexed in instruction information from resource allocation
Resource allocation index is obtained, is combined the first DMRS sequence that N number of length is T RB further according to resource allocation index, with
Obtain complete 2nd DMRS sequence.The thought of above-mentioned realization process is that short DMRS combined sequence is formed a long DMRS
Sequence avoids in the UE and same cells that carry out cooperation transmission in different community in the related technology and carries out MU-MIMO pairing
UE cannot achieve it is absolutely orthogonal, there is a problem of that scheduling limitation and DMRS multiplexing capacity are insufficient, to improve the transmission of system
Performance.
If the first signaling includes the motif column index of transport layer cyclic shift index and DMRS, UE is followed according to transport layer
Multiple first DMRS sequences that ring displacement index and motif column index generate, and multiple first DMRS sequences are combined to obtain second
DMRS sequence.In implementation process, UE generates the DMRS basic sequence that length is T RB according to motif column index；It is T further according to length
The DMRS basic sequence of a RB and the cyclic shift index of each transport layer generate the first DMRS sequence that N number of length is T RB；
The first DMRS sequence that N number of length is T RB is combined according to resource allocation index, to obtain complete 2nd DMRS sequence
Column, wherein resource allocation index is also that the resource allocation index instruction information sent according to base station obtains.
After DMRS sequence is combined to generate the 2nd DMRS sequence by UE, the 2nd DMRS sequence is mapped to money by UE
On the corresponding RB subcarrier of source distribution index；It sends and is mapped on RB subcarrier on the corresponding PUSCH channel of RB subcarrier again
The 2nd DMRS sequence.
The present embodiment additionally provides a kind of DMRS processing unit, which may be implemented the above method, and structural representation can
With as shown in Figure 6, comprising: receiving module 10, for receiving the first signaling from base station；Generation module 20, with receiving module
10 couplings, for generating multiple first DMRS sequences according to the first signaling；Composite module 30 is coupled with generation module 20, is used for
DMRS sequence is combined to generate the 2nd DMRS sequence by UE.
During use, different modules can also the difference of the information according to entrained by the first signaling for above-mentioned apparatus
And different functions is executed, for example, including resource allocation index instruction information and the virtual subdistrict mark ID of UE in the first signaling
In the case where information, generation module 20 is also used to index instruction information according to resource allocation and the virtual subdistrict id information of UE is raw
At multiple first DMRS sequences；Composite module 30 is also used to include the case where resource allocation index instruction information in the first signaling
Under, instruction information is indexed according to resource allocation and combines multiple first DMRS sequences.
Fig. 7 shows a kind of structural schematic diagram of generation module 20 comprising: the first generation unit 202, for according to money
The virtual subdistrict id information of source distribution index instruction information and UE generate the first DMRS sequence that N number of length is T resource block RB；
Second generation unit 204 is coupled with the first generation unit 202, combines N number of length for indexing instruction information according to resource allocation
Be the first DMRS sequence of T RB to generate complete 2nd DMRS sequence, wherein N is natural number greater than 1, T be greater than etc.
In 1 natural number.
If generated in the case where the first signaling includes the motif column index of transport layer cyclic shift index and DMRS
Module 20 can be also used for the multiple first DMRS sequences indexed according to transport layer cyclic shift and motif column index generates；Group
Block 30 is molded, can be also used for combining the multiple first DMRS sequences generated according to transport layer cyclic shift index and motif column index
Column.
Fig. 8 shows the structural schematic diagram of above-mentioned apparatus in this case, wherein generation module 20 includes: that third is raw
At unit 206, for generating the DMRS basic sequence that length is T RB according to motif column index；4th generation unit 208, with
Three generation units 206 coupling, for being indexed according to the cyclic shift of DMRS basic sequence and each transport layer that length is T RB
Generate the first DMRS sequence that N number of length is T RB；Composite module 30 includes: assembled unit 302, for according to resource allocation
The first DMRS sequence that N number of length is T RB is combined by index, to obtain complete 2nd DMRS sequence, wherein resource
Distribution index is that the resource allocation index instruction information sent according to base station obtains.
The complete 2nd DMRS sequence that above-mentioned apparatus generates is sent, then above-mentioned apparatus can also be shown including Fig. 9
Mapping block 40 and sending module 50, wherein mapping block 40 is coupled with composite module 30, for by the 2nd DMRS sequence
Resource allocation is mapped to index on corresponding RB subcarrier；Sending module 50 is coupled with mapping block 40, in RB subcarrier
The 2nd DMRS sequence being mapped on RB subcarrier is sent on corresponding PUSCH channel.
The embodiment of the invention also provides the processing method of DMRS in MU-MIMO transmission system a kind of, base station is to carry out MU-
More than one cooperation transmission user terminal UE of MIMO transmission sends the proprietary indication signaling of user for determining DMRS；UE is received
What base station was sent determines the proprietary signaling of the user of DMRS for the UE, and UE is determined using the proprietary signal deployment information of the user should
DMRS, which is characterized in that UE generates the RS sequence that M length is 1 RB, root according to scheduled criterion according to the instruction of signaling
The DMRS sequence that corresponding multiple length are 1 RB is synthesized according to the RB index of distribution, composition sequence is using RB as granularity reality
Now group/sequence jumps (SGH) and cyclic shift jumps (CSH), and specific basic sequence and cyclic shift are related with the position RB；No
There are cyclic shift biasings between same UE.Wherein, the production method of DMRS sequence, comprising: UE according to the instruction of signaling, according to
Scheduled criterion generates the RS basic sequence that M length is 1 RB, and wherein M indicates RB number of UE distribution, the basic sequence rope of generation
Quotation marks are related with RB location index, and basic sequence has ideal circulation autocorrelation and optimal cross correlation.
Other side according to an embodiment of the present invention additionally provides a kind of DMRS long by short DMRS sequent synthesis
The method of sequence, comprising: the DMRS basic sequence that corresponding multiple length are T RB is synthesized according to the RB index of distribution,
Composition sequence is using T RB as granularity.Realization group/sequence jumps (SGH) and jumps (CSH) with cyclic shift to be jumped with cyclic shift
(CSH)；Jump using T RB as granularity realization group/sequence includes: that group/sequence jumps that mode is related with RB index, and different UE are identical
Group/sequence of the position RB jumps that mode is identical, and group/sequence between identical UE difference RB jumps mode can be different.With T RB
Realize that cyclic shift jumps the cyclic shift that (CSH) may include: the identical position RB different UE and jumps (CSH) mode phase for granularity
Together, the cyclic shift between identical UE difference RB jump (CSH) mode can be different.Wherein, the preferred value of T is 1.Pass through this
The DRMS that scheme generates supports that the more than two user DMRS's for being located at same asset position is absolute orthogonal, supports any bandwidth
DMRS orthogonality under the scene that partly overlaps, overcomes the limitation of multiuser MIMO scene dispatching, by adjusting between cyclic shift
Every different multidiameters can be adapted to, it is not only restricted to user moving speed, without the loss of user's spectrum efficiency, enhances DMRS
Multiplexing capacity, avoid in different community in the related technology carry out cooperation transmission UE and same cells in carry out MU-
MIMO pairing UE cannot achieve it is absolutely orthogonal, there is a problem of that scheduling limitation and DMRS multiplexing capacity are insufficient, to improve and be
The transmission performance of system.
With reference to the accompanying drawing and the specific example method that further illustrates this preferred embodiment.
Preferred embodiment
This preferred embodiment provides a kind of DMRS sequence generating method, and Figure 10 is middle according to embodiments of the present invention carries out
Two UE of MU-MIMO pairing corresponding DMRS sequence diagram on the RB of scheduling, wherein the DMRS of UE1 and UE2 is by more
A length is the DMRS sequent synthesis of 1 RB, and composition sequence jumps (SGH) and cyclic shift by granularity realization group/sequence of RB
It jumps (CSH), specific basic sequence and cyclic shift are related with the position RB, and there are cyclic shift biasings between UE1 and UE2.
UE1/UE2 is generated and the method for transmitting DMRS may include steps of one to step 7.
Step 1, UE receive the signaling that DMRS is determined for the UE that base station is sent, and signaling includes that resource allocation index refers to
Show information, UE proprietary virtual subdistrict id information.
Step 2, UE determine following for each transport layer according to virtual subdistrict id information and resource allocation index instruction information
Ring displacement index and motif column index.
Step 3, UE generate the DMRS basic sequence that length is a RB according to DMRS motif column index.
Step 4, UE generate every according to the DMRS basic sequence that length is a RB and each transport layer cyclic shift index
The length of a user's transport layer is the interim DMRS sequence of 1 RB.
Step 5, return step three repeats step 3 to four, to generate the interim DMRS sequence that N number of length is 1 RB,
Wherein N is RB number of UE distribution.
Step 6, UE according to distribution resource index by N number of length be 1 RB interim DMRS sequence synthesize, really
Fixed complete DMRS sequence.
Sequence is mapped on corresponding RB subcarrier by step 7, UE, is sent out on corresponding PUSCH channel by transmitting module
Send DMRS.
When implementing, UE judges DMRS generating mode according to the proprietary signaling of the DMRS user received, when being determined as MU-
When enhancement method under MIMO scene, UE determines that length is the basic sequence of 1 RB according to the proprietary virtual subdistrict id information of user
Column (such as: the special sequence based on QPSK keying is obtained by computer search, and one shares 30 different sequences), come
There is lower but non-zero cross correlation from the DMRS sequence of different basic sequences, but moved from same basic sequence difference circulation
The DMRS sequence of position has perfect orthogonality (mutually noiseless), and UE determines each length according to the resource block of distribution index respectively
Degree is that the cyclic shift of the sequence of 1 RB jumps and group jumps mode.Then the DMRS sequence allocation map that will eventually determine
It is sent on to each RB.
Through the above steps, communication system support be located at same asset position more than two user DMRS absolutely just
It hands over, supports the DMRS orthogonality under any portions of bandwidth Overlay scenes, overcome the limitation of multiuser MIMO scene dispatching, pass through
Adjustment cyclic shift interval can be adapted to different multidiameters, be not only restricted to user moving speed, do not have user's spectrum efficiency
Loss, enhance the multiplexing capacity of DMRS, avoid and carry out the UE of cooperation transmission and identical in different community in the related technology
Carried out in cell MU-MIMO pairing UE cannot achieve it is absolutely orthogonal, there is a problem of that scheduling limitation and DMRS multiplexing capacity are insufficient,
To improve the transmission performance of system.
Below to generate and send DMRS under different scenes as background, above preferred embodiment is illustrated.
Embodiment one
Assuming that base station determines that carrying out two terminals of MU-MIMO pairing transmission in cell is respectively UE1 and UE2, base station is true
The uplink transmission resource (i.e. RB index) of fixed each UE distribution, it is { RB1, RB2 } that UE1, which distributes resource, UE2 distribute resource for RB1,
RB2, RB3 }.
Base station by the proprietary signaling of user for being used to determine the DMRS of UE1 and UE2 be sent respectively in the following manner UE1 and
UE2 can be by two ways.Mode one, dynamic signaling notice: covering UE-specific DMRS parameter by RRC configuration N first, by
Uplink dynamic signaling (ULDCI) indicates which specifically used set of parameter of UE1 and UE2.Mode two, it is semi-static to signal: directly
It is semi-statically configured by RRC and notifies a set of UE-specific DMRS parameter to UE1 and UE2.
As shown in figure 11, the UE1 for carrying out MU-MIMO pairing transmission is carried out the following processing:
Step 1, UE1 receive the signaling that DMRS is determined for UE1 that base station is sent, and signaling includes that resource allocation index refers to
Show information, UE1 proprietary virtual subdistrict id information
Step 2, UE1 is according to virtual subdistrict id informationAnd resource allocation index instruction information { RB1, RB2 } determines
The cyclic shift of each transport layer indexes αλ。
According to the prior art, in time slot nsInterior cyclic shift indexes αλCalculation method is as follows: αλ=2πncs,λ/ 12, wherein
According to above method, the UE1 and UE2 for carrying out MU-MIMO pairing possess different cyclic shift index αλ；Its
In, parameter is configured by high level, is the proprietary parameter of cell；It is indicated by uplink dynamic signaling (UL DCI), is UE1
Proprietary parameter；Wherein, function is pseudo-random variable, at the beginning of
Initial value is or value range therein [0,29].
RIV indicates corresponding RB index, and for UE1 on RB1, RIV=1, on RB2, RIV=2 are brought formula into and calculated i.e.
It can.
According to above method, base station is the identical virtual subdistrict id information of UE1 and UE2 configuration for carrying out MU-MIMO pairingTherefore, parameter indicated by UE1 and UE2And nPN(ns) it on identical RB is identical, then distributeValue must be different, and can just guarantee that two UE for carrying out MU-MIMO pairing use different cyclic shifts in this way.
Step 3, UE1 is according to virtual subdistrict id informationAnd resource allocation index instruction information { RB1, RB2 } determines base
Sequence group index.
In time slot nsThe calculation method of interior basic sequence group index u is as follows: u=(fgh(ns)+fss) mod30, wherein
Function c (8ns+ i) it is pseudo-random variable, initial value is
For the proprietary virtual subdistrict ID of UE1, is notified by top signaling or indicated by DCI, wherein fssCan by with
Lower two methods calculate:
Method one,Wherein RIV indicates corresponding RB index, as it is assumed that UE1 distribution
Resource block is RB1 and RB2, then the used f on two RBssParameter it is following (for improved technology of the present invention):
On RB1,On RB2,
Method two,F under such methodssValue it is unrelated with the RB index of distribution, in RB1 and RB2
Upper fssValue it is identical.
According to above method, base station is the identical virtual subdistrict id information of UE1 and UE2 configuration for carrying out MU-MIMO pairingIdentical frequency-hopping mode (while enabling or not enabling simultaneously), there is identical f on identical RBss, therefore carry out MU-
The UE1 and UE2 of MIMO pairing possess identical basic sequence group index u on identical RB, but possess on different RB
Basic sequence group index may it is identical may also be different.
Step 4, UE1 determine that a length is the DMRS basic sequence of a RB according to DMRS basic sequence group index u
Specific method includes but is not limited to:
Method one: the sequence that 30 length are 12 is obtained by computer search, number is 0 ~ 29, is determined according to the value of u
Corresponding sequence；Method two: Zadoff-Chu sequence sequence, Zadoff-Chu are generated according to given parameter
The generating mode of sequence sequence be the prior art wherein, value be 12(this regulation unlike the prior art), the value of q is by joining
Number u and v determine, i.e., and
Step 5, UE generate every according to the DMRS basic sequence that length is a RB and each transport layer cyclic shift index
The length of a user's transport layer is the interim DMRS sequence of 1 RB 0≤n < 12, wherein α is
The α that second step is calculatedλ,
Step 6 repeats step 3 to four, generates the interim DMRS sequence that N number of length is 1 RB respectively Wherein, N is RB number of UE distribution, for UE1, in this N=2.
Step 7, UE1 according to distribution resource index by 2 length be 1 RB interim DMRS sequence It is synthesized, it willIt is mapped on RB1, it willIt is mapped on RB2, determine complete DMRS sequence.
Step 8, UE1 send DMRS on corresponding PUSCH channel.
Embodiment two
This embodiment is distinct in step 3 with embodiment one.
The step of the present embodiment three is as follows: UE1 is according to virtual subdistrict id informationAnd resource allocation index instruction information
{ RB1, RB2 } determines basic sequence group index；
In time slot nsThe calculation method of interior basic sequence group index u is as follows: u=fgh(ns)+fss) mod30,
Wherein,
Function c (8ns+ i) it is pseudo-random variable, initial value isOrOrWherein RIV is the RB index of distribution, and for UE1, RIV is 1 on RB1, and RIV is on RB2
2, bring formula calculating into respectively.
For the proprietary virtual subdistrict ID of UE1, is notified by top signaling or indicated by DCI；
According to above method, base station is the identical virtual subdistrict id information of UE1 and UE2 configuration for carrying out MU-MIMO pairingIdentical frequency-hopping mode (while enabling or not enabling simultaneously), there is identical f on identical RBss, therefore carry out MU-
The UE1 and UE2 of MIMO pairing possess identical basic sequence group index u on identical RB, but possess on different RB
Basic sequence group index may it is identical may also be different.
Embodiment three
Assuming that base station determines that carrying out two terminals of MU-MIMO pairing transmission in cell is respectively UE1 and UE2, base station is true
The uplink transmission resource (i.e. RB index) of fixed each UE distribution, it is { RB1, RB2 } that UE1, which distributes resource, UE2 distribute resource for RB1,
RB2, RB3 }, the proprietary signaling of user for being used to determine the DMRS of UE1 and UE2 is sent respectively to UE1 by base station in the following manner
And UE2:
Dynamic signaling notice: mode one covers UE-specific DMRS parameter by RRC configuration N first, is believed by upper Mobile state
Specifically used any set of parameter of (UL DCI) instruction UE1 and UE2 is enabled, parameter includes each user's transport layer cyclic shift index αλ
And DMRS basic sequence group index u.
Mode two, it is semi-static to signal: to be directly semi-statically configured by RRC and a set of UE-specific DMRS is notified to join
For number to UE1 and UE2, parameter includes each user's transport layer cyclic shift index αλAnd DMRS basic sequence group index u.
Base station determines that each user's transport layer cyclic shift indexes α according to certain criterionλ, the criterion include: UE1 and
UE2 cyclic shift on identical RB and identical transport layer indexes αλValue is different, and basic sequence group index u is identical.
The UE1 for carrying out MU-MIMO pairing transmission carries out the following processing step:
Step 1, UE1 receive the UE1 that is used for that base station is sent and determine that the proprietary signaling of the user of DMRS, signaling include: each
User's transport layer cyclic shift indexes αλAnd DMRS basic sequence group index u.It is the biography directly transmitted by base station in the embodiment
Defeated layer cyclic shift indexes αλAnd DMRS basic sequence group index u.
Step 2, UE1 receive resource allocation index instruction information { RB1, RB2 } that base station is sent.
The DMRS basic sequence group index that UE1 is used on RB1 and RB2 is respectively u1 and u2, there is following two calculation:
Mode one, u1=u;u2=u；
Mode two, u1=(u+RIV1) mod30, u2=(u+RIV2) mod30, wherein for UE1, RIV1=1, RIV2
=2。
Step 3, UE1 generate the DMRS basic sequence that length is a RB according to DMRS basic sequence group index u1 (u2)Its implementation may refer to the step of embodiment one four, and the step is same.
Step 4, UE1 are generated according to the DMRS basic sequence that length is a RB and each transport layer cyclic shift index
The length of each transport layer is the interim DMRS sequence of 1 RBIts implementation may refer to the step of embodiment one
Five, the step is same.
Step 5 repeats step 3 to four, generates the interim DMRS sequence that N number of length is 1 RB respectivelyWherein, N is RB number of UE distribution, for UE1, in this N=2.
Step 6, UE1 according to distribution resource index by 2 length be 1 RB interim DMRS sequenceWithIt is synthesized, it willIt is mapped on RB1, it willIt is mapped on RB2, determines complete DMRS sequence.
Step 7, UE1 send DMRS in PUSCH channel.
Example IV
Assuming that base station determines that it is respectively UE1 and UE2 and UE3 that two terminals of MU-MIMO pairing transmission are carried out in cell,
The base station UE2 determines the uplink transmission resource (i.e. RB index) of each UE distribution, and it is { RB1, RB2 }, UE2 distribution money that UE1, which distributes resource,
Source is { RB1, RB2, RB3 }, and the resource of UE3 distribution is { RB3 }, and base station will be used to determine the use of the DMRS of UE1, UE2 and UE3
The proprietary signaling in family is sent respectively to UE1, UE2 and UE3 in the following manner:
Dynamic signaling notice: mode one covers UE-specific DMRS parameter by RRC configuration N first, is believed by upper Mobile state
Specifically used any set of parameter of (UL DCI) instruction UE1, UE2 and UE3 enabled.
Mode two, it is semi-static to signal: to be directly semi-statically configured by RRC and a set of UE-specific DMRS is notified to join
Number is to UE1, UE2 and UE3.
As shown in figure 12, the UE2 for carrying out MU-MIMO pairing transmission carries out the following processing step:
Step 1, UE2 receive the signaling that DMRS is determined for UE2 that base station is sent, and signaling includes that resource allocation index refers to
Show information, UE2 proprietary virtual subdistrict id information
Step 2, UE2 is according to virtual subdistrict id informationAnd resource allocation index instruction information { RB1, RB2, RB3 }
Determine the cyclic shift index α of each transport layerλ, realize specific method may refer to the step two in embodiment one.
According to above method, base station is the identical virtual subdistrict of UE1, UE2 and UE3 configuration for carrying out MU-MIMO pairing
Id informationTherefore, parameter indicated by UE1, UE2 and UE3And nPN(ns) it is identical, then distributeValue must be different, and can just guarantee that two couples of UE for carrying out MU-MIMO pairing use different cyclic shifts in this way.
Step 3, UE2 is according to virtual subdistrict id informationAnd resource allocation index instruction information { RB1, RB2, RB3 }
Determine basic sequence group index.
In time slot nsThe specific method of interior basic sequence group index u can be shown in the step three in embodiment one.
Wherein, fssIt can be calculated by following two method:
Method one,Wherein RIV indicates corresponding RB index, as it is assumed that UE1 distribution
Resource block is RB1 and RB2, then the used f on two RBssParameter it is following (for improved technology of the present invention):
On RB1,
On RB2,
On RB3,
Method two,F under such methodssValue it is unrelated with the RB index of distribution, in RB1 and RB2
And f on RB3ssValue it is identical.
According to above method, base station is the identical virtual subdistrict of UE1, UE2 and UE3 configuration for carrying out MU-MIMO pairing
Id informationIdentical frequency-hopping mode (enable or do not enable simultaneously), there is identical f on identical RBss, therefore carry out
UE1, UE2 and UE3 of MU-MIMO pairing possess identical basic sequence group index u on identical RB, but different
The basic sequence group index possibility possessed on RB is identical may also be different.
Step 4, UE2 generate the DMRS basic sequence that length is a RB according to DMRS basic sequence group index uIt has
Body implementation method can be identical as the step of embodiment one four.
Step 5, UE2 are generated according to the DMRS basic sequence that length is a RB and each transport layer cyclic shift index
The length of each transport layer is the interim DMRS sequence of 1 RBIts specific method can be with one step 5 phase of embodiment
Together.
Step 6 repeats step 4 to five, generates the interim DMRS sequence that N number of length is 1 RB respectively Wherein N is RB number of UE2 distribution, for UE1, in this N=2.
Step 7, UE2 according to distribution resource index by 2 length be 1 RB interim DMRS sequenceWithIt is synthesized, it willIt is mapped on RB1, it willIt is mapped on RB2, determines complete DMRS sequence.
Step 8, UE2 send DMRS in PUSCH channel.
Embodiment five
In above embodiments, the granularity unit that DMRS sequence generates is 1 RB, i.e. the value of T is optimal value 1, but
It is that T can also take other values, in the present embodiment, the value of T is 2.
Assuming that base station determines that carrying out two terminals of MU-MIMO pairing transmission in cell is respectively UE1 and UE2, base station is true
The uplink transmission resource (i.e. RB index) of fixed each UE distribution, it is { RB1, RB2 } that UE1, which distributes resource, UE2 distribute resource for RB1,
RB2, RB3, RB4 }, specific implementation method is similar with embodiment one, and the main distinction is step 4.
In the present embodiment, the UE1 of step 4 determines that a length is two RB's according to DMRS basic sequence group index u
DMRS basic sequenceSpecific method includes but is not limited to:
Method one obtains the sequence that 30 length are 24 by computer search, and number is 0 ~ 29, is determined according to the value of u
Corresponding sequence；Method two generates Zadoff-Chu sequence sequence, Zadoff-Chu according to given parameter
The generating mode of sequence sequence；
Wherein, 's
For 24(, this is provided unlike the prior art value).Then the DMRS sequence of UE1 is the above single sequence generated, and UE2
DMRS sequence is the composition sequence of more than two single sequences generated.
It can be seen from the above description that the present invention realizes following technical effect:
By using the embodiment of the present invention, communication system can be made to support that being located at the more than two of same asset position uses
Family DMRS's is absolute orthogonal, supports the DMRS orthogonality under any portions of bandwidth Overlay scenes, overcomes under multiuser MIMO scene
The limitation of scheduling can be adapted to different multidiameters by adjusting cyclic shift interval, be not only restricted to user moving speed, not have
There is the loss of user's spectrum efficiency, enhance the multiplexing capacity of DMRS, avoids and carry out cooperation biography in different community in the related technology
In defeated UE and same cells carry out MU-MIMO pairing UE cannot achieve absolutely it is orthogonal, exist scheduling limitation and DMRS multiplexing
The problem of off-capacity, to improve the transmission performance of system.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein
Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of around uplink demodulation reference signal DMRS processing method characterized by comprising
User equipment (UE) receives the first signaling from base station；
The UE generates multiple first DMRS sequences according to first signaling；
The first DMRS sequence is combined to generate the 2nd DMRS sequence by the UE；
Include the case where that the virtual subdistrict of resource allocation index instruction information and the UE identify id information in first signaling
Under, the UE generates multiple first DMRS according to the virtual subdistrict id information that the resource allocation indexes instruction information and the UE
Sequence, and instruction information is indexed according to the resource allocation and combines the multiple first DMRS sequence；
The virtual subdistrict id information for indexing instruction information and the UE according to the resource allocation is generated multiple first by the UE
DMRS sequence, and the multiple first DMRS sequence of instruction information combination is indexed according to the resource allocation and includes:
The UE generates N number of length according to the virtual subdistrict id information that the resource allocation indexes instruction information and the UE as T
The first DMRS sequence of a resource block RB；
According to the resource allocation index instruction information combine N number of length be T RB the first DMRS sequence to have generated
Whole the 2nd DMRS sequence；
Wherein, the N is the natural number more than or equal to 1, and the T is the natural number more than or equal to 1.
2. the method according to claim 1, wherein the UE according to the resource allocation index instruction information and
The virtual subdistrict id information of the UE generates the first DMRS sequence that N number of length is T resource block RB
The UE determines that the UE's is each according to the virtual subdistrict id information that the resource allocation indexes instruction information and the UE
The cyclic shift index and motif column index of a transport layer；
The UE generates the DMRS basic sequence that length is T RB according to the motif column index；
The UE is indexed according to the cyclic shift of DMRS basic sequence and each transport layer that the length is T RB and is generated
N number of length is the first DMRS sequence of T RB.
3. being indicated described in information combination the method according to claim 1, wherein being indexed according to the resource allocation
N number of length be T RB the first DMRS sequence with generate completely the 2nd DMRS sequence include:
The UE is indexed according to resource allocation and is combined the first DMRS sequence that N number of length is T RB, with
To the complete 2nd DMRS sequence, wherein the resource allocation index is to index instruction information according to the resource allocation
It obtains.
4. the method according to claim 1, wherein
In the case where first signaling includes the motif column index of transport layer cyclic shift index and the DMRS, the UE
Multiple first DMRS sequences are generated according to transport layer cyclic shift index and the motif column index, and are combined the multiple
First DMRS sequence.
5. according to the method described in claim 4, it is characterized in that, the UE will according to the transport layer cyclic shift index and
Multiple first DMRS sequences that the motif column index generates, and combine the multiple first DMRS sequence and include:
The UE generates the DMRS basic sequence that length is T RB according to the motif column index；
The UE generates N number of according to the cyclic shift index of DMRS basic sequence and each transport layer that the length is T RB
Length is the first DMRS sequence of T RB；
The UE is indexed according to resource allocation and is combined the first DMRS sequence that N number of length is T RB, with
To the complete 2nd DMRS sequence, wherein the resource allocation index is that the resource allocation index sent according to base station refers to
Show what information obtained.
6. method described in any one of -3 and 5 according to claim 1, which is characterized in that the value of the T is 1.
7. a kind of around uplink demodulation reference signal DMRS processing unit characterized by comprising
Receiving module, for receiving the first signaling from base station；
Generation module, for generating multiple first DMRS sequences according to first signaling；
Composite module, for being combined the first DMRS sequence to generate the 2nd DMRS sequence；
The generation module is also used in first signaling include resource allocation index instruction information and the virtual subdistrict mark of UE
In the case where knowing id information, the virtual subdistrict id information generation for indexing instruction information and the UE according to the resource allocation is multiple
First DMRS sequence；
The composite module is also used in the case where first signaling includes resource allocation index instruction information, according to institute
It states resource allocation index instruction information and combines the multiple first DMRS sequence；
First generation unit, the virtual subdistrict id information for indexing instruction information and the UE according to the resource allocation generate
N number of length is the first DMRS sequence of T resource block RB；
Second generation unit combines N number of length for indexing instruction information according to the resource allocation as the first of T RB
DMRS sequence is to generate the complete 2nd DMRS sequence；
Wherein, the N is the natural number more than or equal to 1, and the T is the natural number more than or equal to 1.
8. device according to claim 7, which is characterized in that
The generation module is also used in first signaling include the basic sequence of transport layer cyclic shift index and the DMRS
In the case where index, according to multiple first DMRS sequences of transport layer cyclic shift index and motif column index generation
Column；
The composite module is also used to combine the institute generated according to transport layer cyclic shift index and the motif column index
State multiple first DMRS sequences.
9. device according to claim 8, which is characterized in that
The generation module includes:
Third generation unit, for generating the DMRS basic sequence that length is T RB according to the motif column index；
4th generation unit, for the cyclic shift according to DMRS basic sequence and each transport layer that the length is T RB
Index generates the first DMRS sequence that N number of length is T RB；
The composite module includes:
Assembled unit, for the first DMRS sequence that N number of length is T RB to be carried out group according to resource allocation index
It closes, to obtain the complete 2nd DMRS sequence, wherein the resource allocation index is the resource allocation sent according to base station
Index instruction information obtains.
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| CN101882980A (en) * | 2010-05-06 | 2010-11-10 | 中兴通讯股份有限公司 | Method and system for indicating uplink demodulation reference signal |
| CN102377549A (en) * | 2010-08-17 | 2012-03-14 | 上海贝尔股份有限公司 | Method used for non-adaptive retransmission and apparatus thereof |
| CN102142918A (en) * | 2011-03-29 | 2011-08-03 | 电信科学技术研究院 | Method and equipment for processing pilot sequence |
| CN102158252A (en) * | 2011-04-19 | 2011-08-17 | 电信科学技术研究院 | Method, system and device for configuring and determining uplink cyclic shift frequency hopping |
| CN102413572A (en) * | 2011-09-28 | 2012-04-11 | 中兴通讯股份有限公司 | DMRS (demodulation reference signal) as well as sending method and device thereof |
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| Publication number | Publication date |
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| WO2014114113A1 (en) | 2014-07-31 |
| CN103974418A (en) | 2014-08-06 |
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