CN103974418A - DMRS processing method and device - Google Patents

DMRS processing method and device Download PDF

Info

Publication number
CN103974418A
CN103974418A CN201310027132.9A CN201310027132A CN103974418A CN 103974418 A CN103974418 A CN 103974418A CN 201310027132 A CN201310027132 A CN 201310027132A CN 103974418 A CN103974418 A CN 103974418A
Authority
CN
China
Prior art keywords
dmrs
sequence
index
resource allocation
length
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310027132.9A
Other languages
Chinese (zh)
Other versions
CN103974418B (en
Inventor
罗薇
陈宪明
关艳峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN201310027132.9A priority Critical patent/CN103974418B/en
Priority to PCT/CN2013/085510 priority patent/WO2014114113A1/en
Publication of CN103974418A publication Critical patent/CN103974418A/en
Application granted granted Critical
Publication of CN103974418B publication Critical patent/CN103974418B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a DMRS processing method and device. The method comprises the following steps that UE receives a first signal from a base station, the UE generates a plurality of first DMRS sequences according to the first signal, and the UE enables the first DMRS sequences to be combined to generate second DMRS sequences. The DMRS processing method and device are used for solving the problem that in related technologies, DMRSs among different users cannot be orthogonal under the situation that a part of bandwidths of MU-MIMO overlap, thereby supporting absolute orthogonality of the DMRSs of two or more users with the same resource position, supporting DMRS orthogonality on the scene that any part of the bandwidths overlap, overcoming the limitation of scheduling on the scene of multi-user MIMO, and improving transmission performance of a system.

Description

DMRS processing method and device
Technical field
The present invention relates to wireless communication field, in particular to a kind of up link demodulated reference signal (DemodulationReference Signal, referred to as DMRS) processing method.
Background technology
Long Term Evolution (Long Term Evolution, referred to as LTE) project is 3G (Third Generation) Moblie technology (ThirdGeneration, referred to as 3G) evolution, but its 4th third-generation mobile communication technology (FourthGeneration that to be not people generally misread, referred to as 4G), a but transition between 3G and 4G technology, it improves and has strengthened the aerial access technology of 3G, it adopts OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) technology and multiple-input and multiple-output (Multiple Inputs and Multiple Outputs, referred to as MIMO) technology (being multi-antenna technology) is as the sole criterion of wireless network evolution.Senior Long Term Evolution (LTE-Advanced, referred to as LTE-A) is the follow-up evolution of LTE technology.In order to meet the various demand parameters of 4G, be suggested for several key technologies of LTE-A, comprise carrier aggregation, coordinate multipoint sending and receiving, relay transmission and the enhancing of many antennas etc.Wherein, similar with down link (Downlink, referred to as DL), up link (Uplink, referred to as UL) many antennas strengthen and comprise equally that the many antennas in alone family (Single User, referred to as SU) strengthen with the many antennas of multi-user (Multiple User, referred to as MU) and strengthen.
Uplink reference signals major part in LTE is based on ZC(Zadoff-Chu) sequence, these sequences meet reference signal (Reference Signal, referred to as RS) ideal characterisitics, 0db cubic metric (Cubic Metric, referred to as CM), desirable circulation auto-correlation and optimum cross-correlation.Good cross-correlation make to receive signal and target sequence do time domain relevant after, the average expansion in time domain of its interference signal, can guarantee expecting that channel tap detects more reliably.But the CM of a ZC sequence declines with Nai Longsite sample rate from theoretical 0db in reality, this is owing to existing the protection subcarrier not used at the two ends of sequence, and causes the over-sampling of ZC sequence equivalence in time domain.The length of RS sequence equals to distribute the quantity of word carrier wave, and this is the multiple of each Resource Block (Resource Block, referred to as RB) number of subcarriers.For the ul transmissions of Rang Yige community support different bandwidth, ascending resource for every kind of different RB distributes, be necessary to allow at least one RS sequence of a cell allocation, the actual RS sequence adopting obtains by the basic RS sequence of corresponding length is carried out to different cyclic shifts.Be assigned to subscriber equipment (the User Equipment of different sub carrier or RB group, referred to as UE), on these subcarriers, send RS signal, and therefore realize RS separation by FDM, but, in some cases, UE can be distributed on same group of subcarrier and transmit, for example uplink multi-users MIMO, in these situations, there is each other interference in RS, therefore need certain methods to separate the RS from different transmitters, it is undesirable in identical RB, in the different UEs of transmission, using different basic sequences, because the cross correlation of non-zero can reduce the channel estimating performance of eNodeB between basic sequence, more suitably method is to make the RS of different UE completely orthogonal.In theory, can realize by the FDM of RS in same subcarrier group, then this can reduce the quantity of RS sequence length and available different RS sequences, and this is unfavorable especially for low bandwidth transmission.Therefore in LTE, the orthogonality occupying between the RS of same sub-carrier has utilized a characteristic of ZC sequence to realize, the correlation between ZC sequence and any cyclic shift of same ZC sequence is 0, in the time that channel impulse response has limit for length, different transmitters can use the different cyclic shifts of same RS basic sequence, as long as cyclic shift is longer than channel impulse response, between RS, just can keep orthogonal.
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 has occupied identical RB position.Therefore, RB sequence length equals to distribute to the quantity of UE for the subcarrier of PUSCH or PUCCH transmission.
If discrete resource is distributed, the DMRS of the upper transmission of PUSCH, by the distribution of this resource of Adaptive matching, according to the RB number altogether distributing, produces a DMRS basic sequence so, then it is decomposed on the RB of PUSCH transmission.
Particularly, for LTE system, distributing due to resource is with 12 subcarriers, and 1 RB is partition size, and therefore, DMRS sequence length can only be 12 multiple.For the sequence length that exceedes 24, corresponding DMRS basic sequence is defined as the cyclic extensions that length is the Zadoff-Chu sequence of MZC, and wherein, MZC is the largest prime that is less than or equal to DMRS sequence length.For the sequence length that equals 12 or 24, corresponding DMRS basic sequence is defined as the special quarternary phase-shift keying (QPSK) obtaining by computer search (Quadrature Phase Shift Keying, referred to as QPSK) sequence.Every kind of corresponding 30 basic sequence groups of DMRS sequence length, each basic sequence group comprises one or two basic sequence.Wherein, the cyclic shift (linear phase shift on corresponding frequency domain) of certain basic sequence in certain DMRS basic sequence group that the DMRS sequence of the actual use of certain time slot is corresponding length, each DMRS basic sequence can define 12 kinds of cyclic shifts at the most.Come from identical DMRS basic sequence, but the cross correlation with the DMRS sequence of different cyclic shifts is zero, is orthogonal, comes from the cross correlation non-zero of the DMRS sequence of different basic sequences, is non-orthogonal.
According to the allocated bandwidth type of multiplexing UE, uplink multi-users multiple-input and multiple-output (Multiple User-Multiple Inputsand Multiple Outputs, referred to as MU-MIMO) transmission is divided into again two kinds, i.e. completely overlapping up MU-MIMO transmission (multiplexing different UEs bandwidth is completely overlapping) the up MU-MIMO transmission (multiplexing different UEs portions of bandwidth overlapping) overlapping with portions of bandwidth of bandwidth.Wherein, for above-mentioned two kinds of up MU-MIMO transport-types, multiplexing different UEs should be preferably mutually orthogonal at the DMRS of bandwidth lap (comprising that above-mentioned bandwidth is completely overlapping overlapping with portions of bandwidth) transmitting.In LTE-A system, for the completely overlapping up MU-MIMO transmission of bandwidth, if accompanying drawing 1, accompanying drawing 2 are with as shown in accompanying drawing 3, come from different cyclic shifts (the Cyclic Shift of identical DMRS basic sequence by use, referred to as CS) sequence and/or orthogonal covering codes (Orthogonal Cover Code, referred to as OCC), can realize mutually orthogonal from the different DMRS of the multiplexing UE of difference.For the overlapping up MU-MIMO transmission of portions of bandwidth, as shown in Figure 4, can only be by using OCC to realize mutually orthogonal from the different DMRS of the multiplexing UE of difference.
Along with the continuous evolution of mobile communications network, the class of business that mobile terminal or UE support will be more and more abundanter.Because the data volume of different service types transmission is conventionally different, therefore, under identical transmission conditions, the transmission bandwidth that different service types needs is also different conventionally.Distribute identical transmission bandwidth if scheduler is forced to different service types, can cause the loss of spectrum efficiency.For focus covering scene, up MU-MIMO has become the necessary means that promotes network capacity.Consider above factor, the overlapping up MU-MIMO transport-type of portions of bandwidth will become the important and general transmission mode of follow-up evolvement network.But, existing by using OCC to realize the mutually orthogonal method of different DMRS of the overlapping multiplexing UE of difference of portions of bandwidth, there is following defect: the multiplexing UE number of maximum that (1) is supported is two, and this has limited the further lifting of network capacity; (2) if be greater than the subframe time domain span of (comprising two time slots) coherence time of channel, the method can be used, and its application or performance are limited to UE translational speed or Doppler frequency shift.
Summary of the invention
The invention provides a kind of DMRS processing method and device, at least to solve in correlation technique, in the overlapping situation of MU-MIMO part bandwidth between different user DMRS cannot be orthogonal problem.
According to an aspect of the present invention, provide a kind of DMRS processing method, having comprised: UE has received the first signaling from base station; Described UE generates multiple DMRS sequences according to described the first signaling; Described UE combines to generate the 2nd DMRS sequence by described DMRS sequence.
Preferably, the virtual subdistrict mark id information that comprises resource allocation index indication information and described UE in described the first signaling, described UE generates multiple DMRS sequences according to the virtual subdistrict id information of described resource allocation index indication information and described UE, and according to the described multiple DMRS sequences of described resource allocation index indication information combination.
Preferably, described UE will generate multiple DMRS sequences according to the virtual subdistrict id information of described resource allocation index indication information and described UE, and comprises according to the described multiple DMRS sequences of described resource allocation index indication information combination: described UE generates N the described DMRS sequence that length is T Resource Block RB according to the virtual subdistrict id information of described resource allocation index indication information and described UE; Combining a described N length according to described resource allocation index indication information is that a DMRS sequence of T RB is to generate complete described the 2nd DMRS sequence; Wherein, described N is more than or equal to 1 natural number, and described T is more than or equal to 1 natural number.
Preferably, the described DMRS sequence that described UE is T Resource Block RB according to virtual subdistrict N length of id information generation of described resource allocation index indication information and described UE comprises: described UE determines cyclic shift index and the basic sequence index of each transport layer of described UE according to the virtual subdistrict id information of described resource allocation index indication information and described UE; It is the DMRS basic sequence of T RB that described UE generates length according to described basic sequence index; Described UE is that the DMRS basic sequence of T RB and the cyclic shift index of described each transport layer generate N the described DMRS sequence that length is T RB according to described length.
Preferably, combining a described N length according to described resource allocation index indication information is that a DMRS sequence of T RB comprises to generate complete described the 2nd DMRS sequence: described UE combines a described N length as a described DMRS sequence of T RB according to resource allocation index, to obtain complete described the 2nd DMRS sequence, wherein, described resource allocation index obtains according to described resource allocation index indication information.
Preferably, comprise in described the first signaling: the basic sequence index of transport layer cyclic shift index and described DMRS, multiple DMRS sequences that described UE generates according to described transport layer cyclic shift index and described basic sequence index, and combine a described multiple DMRS sequence.
Preferably, described UE is the multiple DMRS sequences that generate according to described transport layer cyclic shift index and described basic sequence index, and combines a described multiple DMRS sequence and comprise: it is the DMRS basic sequence of T RB that described UE generates length according to described basic sequence index; Described UE is that the DMRS basic sequence of T RB and the cyclic shift index of described each transport layer generate N the described DMRS sequence that length is T RB according to described length; The described DMRS sequence that described UE is T RB according to resource allocation index by a described N length combines, to obtain complete described the 2nd DMRS sequence, wherein, described resource allocation index is that the resource allocation index indication information sending according to base station obtains.
Preferably, the value of described T is 1.
According to a further aspect in the invention, provide a kind of DMRS processing unit, having comprised: receiver module, for receiving the first signaling from base station; Generation module, for generating multiple DMRS sequences according to described the first signaling; Composite module, combines to generate the 2nd DMRS sequence for described UE by described DMRS sequence.
Preferably, described generation module, also, for comprising in described the first signaling the virtual subdistrict mark id information of resource allocation index indication information and described UE, generate multiple DMRS sequences according to the virtual subdistrict id information of described resource allocation index indication information and described UE; Described composite module, also in the situation that described the first signaling comprises resource allocation index indication information, according to the described multiple DMRS sequences of described resource allocation index indication information combination.
Preferably, described generation module comprises: the first generation unit, generates N the described DMRS sequence that length is T Resource Block RB for the virtual subdistrict id information according to described resource allocation index indication information and described UE; The second generation unit is that a DMRS sequence of T RB is to generate complete described the 2nd DMRS sequence for combine a described N length according to described resource allocation index indication information; Wherein, described N is more than or equal to 1 natural number, and described T is more than or equal to 1 natural number.
Preferably, described generation module, also for the basic sequence index that comprises transport layer cyclic shift index and described DMRS in described the first signaling, according to multiple DMRS sequences of described transport layer cyclic shift index and the generation of described basic sequence index; Described composite module, also for combining according to described multiple DMRS sequences of described transport layer cyclic shift index and the generation of described basic sequence index.
Preferably, described generation module comprises: the 3rd generation unit is the DMRS basic sequence of T RB for generating length according to described basic sequence index; The 4th generation unit, for according to described length being the DMRS basic sequence of T RB and N the described DMRS sequence that length is T RB of the cyclic shift index of described each transport layer generation; Described composite module comprises: assembled unit, combine for a described DMRS sequence that is T RB by a described N length according to resource allocation index, to obtain complete described the 2nd DMRS sequence, wherein, described resource allocation index is that the resource allocation index indication information sending according to base station obtains.
The present invention has adopted following method: UE to receive the first signaling from base station; Described UE generates multiple DMRS sequences according to described the first signaling; Described UE combines to generate the 2nd DMRS sequence by described DMRS sequence.By using the present invention, solve in correlation technique, in the overlapping situation of MU-MIMO part bandwidth between different user DMRS cannot be orthogonal problem, and then more than two user DMRS's of support distribution same asset position is definitely orthogonal, support the DMRS orthogonality under the overlapping scene of any portions of bandwidth, overcome the restriction of multiuser MIMO scene dispatching, thereby improved the transmission performance of system.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 realizes the orthogonal schematic diagram of the different DMRS of the multiplexing UE of the completely overlapping difference of bandwidth according to the different CS sequences of passing through use DMRS basic sequence of correlation technique;
Fig. 2 is the orthogonal schematic diagram of different DMRS that the use OCC by using correlation technique realizes the completely overlapping multiplexing UE of difference of bandwidth;
Fig. 3 is the orthogonal schematic diagram of different DMRS that different CS sequences by come from identical DMRS basic sequence according to the use of correlation technique and OCC realize the completely overlapping difference multiplexing UE of bandwidth;
Fig. 4 be according to correlation technique pass through use OCC to realize the orthogonal schematic diagram of different DMRS of the overlapping multiplexing UE of difference of portions of bandwidth;
Fig. 5 is according to the flow chart of the DMRS processing method of the embodiment of the present invention;
Fig. 6 is according to the structural representation one of the DMRS processing unit of the embodiment of the present invention;
Fig. 7 is according to the structural representation of the DMRS processing unit generation module of the embodiment of the present invention;
Fig. 8 is according to the structural representation two of the DMRS processing unit of the embodiment of the present invention;
Fig. 9 is according to the structural representation three of the DMRS processing unit of the embodiment of the present invention;
Figure 10 is the DMRS sequence schematic diagram that carries out according to the preferred embodiment of the invention two UE correspondence on the RB of scheduling of MU-MIMO pairing;
Figure 11 is the UE1 of embodiment mono-according to the preferred embodiment of the invention and the DMRS sequence schematic diagram of UE2 correspondence on the RB of scheduling;
Figure 12 is the UE1 of embodiment mono-according to the preferred embodiment of the invention and the DMRS sequence schematic diagram of UE2 correspondence on the RB of scheduling.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
Based in the overlapping situation of MU-MIMO part bandwidth in correlation technique between different user DMRS cannot be orthogonal problem, the embodiment of the present invention provides a kind of DMRS processing method, the flow process of the method can be as shown in Figure 5, comprises that step S502 is to step S506:
Step S502, UE receives the first signaling from base station;
Step S504, UE generates multiple DMRS sequences according to the first signaling;
Step S506, UE combines to generate the 2nd DMRS sequence by DMRS sequence.
By using the said method of the present embodiment, can solve in correlation technique in the overlapping situation of MU-MIMO part bandwidth DMRS between different user cannot be orthogonal problem, and then more than two user DMRS's of support distribution same asset position is definitely orthogonal, support the DMRS orthogonality under the overlapping scene of any portions of bandwidth, overcome the restriction of multiuser MIMO scene dispatching, thereby improved the transmission performance of system.
In the first above-mentioned signaling, it can carry much information, for example the virtual subdistrict of resource allocation index indication information and UE mark (Identifier, referred to as ID) information, now, UE can calculate and generate the 2nd DMRS sequence according to above-mentioned information.Certainly, the first signaling can also be carried the basic sequence index of transport layer cyclic shift index and DMRS, this kind of situation is that the base station that sends the first signaling is the basic sequence index that UE has calculated transport layer cyclic shift index and DMRS, and sending to the situation of UE, this kind of situation saved the amount of calculation of UE side.
If the first signaling comprises the virtual subdistrict id information of resource allocation index indication information and UE, UE can generate multiple DMRS sequences according to the virtual subdistrict id information of resource allocation index indication information and UE, and combines multiple DMRS sequences according to resource allocation index indication information.When specific implementation, UE generates N the DMRS sequence that length is T Resource Block RB according to the virtual subdistrict id information of resource allocation index indication information and UE; A DMRS sequence that is T RB according to N length of resource allocation index indication information combination is to generate the 2nd complete DMRS sequence, wherein, N is more than or equal to 1 natural number, and T is more than or equal to 1 natural number, wherein, the quantity T of RB is within 1 o'clock, to be optimum selection.
In implementation process, UE determines cyclic shift index and the basic sequence index of each transport layer of UE according to the virtual subdistrict id information of resource allocation index indication information and described UE; Determined after cyclic shift index and basic sequence index, it is the DMRS basic sequence of T RB that UE generates length according to basic sequence index; Be that the DMRS basic sequence of T RB and the cyclic shift index of each transport layer generate N the DMRS sequence that length is T RB according to length again.UE obtains resource allocation index from resource allocation index indication information, then a DMRS sequence that is T RB by N length according to resource allocation index combines, to obtain the 2nd complete DMRS sequence.The thought of above-mentioned implementation procedure is that short DMRS combined sequence is formed to a long DMRS sequence, avoided in different districts, carrying out in correlation technique carrying out in the UE of cooperation transmission and same cells MU-MIMO pairing UE cannot realize definitely orthogonal, there is the problem of scheduling restriction and the multiplexing off-capacity of DMRS, thereby improved the transmission performance of system.
If the first signaling comprises the basic sequence index of transport layer cyclic shift index and DMRS, multiple DMRS sequences that UE generates according to transport layer cyclic shift index and basic sequence index, and combine multiple DMRS sequences to obtain the 2nd DMRS sequence.In implementation process, it is the DMRS basic sequence of T RB that UE generates length according to basic sequence index; Be that the DMRS basic sequence of T RB and the cyclic shift index of each transport layer generate N the DMRS sequence that length is T RB according to length again; A DMRS sequence that is T RB by N length according to resource allocation index combines, and to obtain the 2nd complete DMRS sequence, wherein, resource allocation index is also that the resource allocation index indication information sending according to base station obtains.
After UE combines to generate the 2nd DMRS sequence by DMRS sequence, UE by the 2nd DMRS sequence mapping to RB subcarrier corresponding to resource allocation index; On PUSCH channel corresponding to RB subcarrier, send again the 2nd DMRS sequence being mapped on RB subcarrier.
The present embodiment also provides a kind of DMRS processing unit, and this device can be realized said method, and its structural representation can as shown in Figure 6, comprise: receiver module 10, for receiving the first signaling from base station; Generation module 20, is coupled with receiver module 10, for generate multiple DMRS sequences according to the first signaling; Composite module 30, is coupled with generation module 20, for UE, DMRS sequence is combined to generate the 2nd DMRS sequence.
Said apparatus is in the process using, its different module can also be carried out different functions according to the entrained information difference of the first signaling, for example, the virtual subdistrict mark id information that comprises resource allocation index indication information and UE in the first signaling, generation module 20, also for generating multiple DMRS sequences according to the virtual subdistrict id information of resource allocation index indication information and UE; Composite module 30, also for comprise resource allocation index indication information in the first signaling in the situation that, combines multiple DMRS sequences according to resource allocation index indication information.
Fig. 7 shows a kind of structural representation of generation module 20, and it comprises: the first generation unit 202, generates N the DMRS sequence that length is T Resource Block RB for the virtual subdistrict id information according to resource allocation index indication information and UE; The second generation unit 204, be coupled with the first generation unit 202, for the DMRS sequence that is T RB according to N length of resource allocation index indication information combination to generate the 2nd complete DMRS sequence, wherein, N is greater than 1 natural number, and T is more than or equal to 1 natural number.
If the basic sequence index that comprises transport layer cyclic shift index and DMRS in the first signaling, generation module 20, can also be used for according to multiple DMRS sequences of transport layer cyclic shift index and the generation of basic sequence index; Composite module 30, can also be used for combining the multiple DMRS sequences according to transport layer cyclic shift index and the generation of basic sequence index.
Fig. 8 shows at the structural representation of said apparatus in such cases, and wherein, generation module 20 comprises: the 3rd generation unit 206 is the DMRS basic sequence of T RB for generating length according to basic sequence index; The 4th generation unit 208, is coupled with the 3rd generation unit 206, for according to length being the DMRS basic sequence of T RB and N the DMRS sequence that length is T RB of the cyclic shift index of each transport layer generation; Composite module 30 comprises: assembled unit 302, combine for a DMRS sequence that is T RB by N length according to resource allocation index, to obtain the 2nd complete DMRS sequence, wherein, resource allocation index is that the resource allocation index indication information sending according to base station obtains.
The 2nd complete DMRS sequence that said apparatus generates sends, said apparatus can also comprise the mapping block 40 shown in Fig. 9 and sending module 50, wherein, mapping block 40, be coupled with composite module 30, for by the 2nd DMRS sequence mapping to RB subcarrier corresponding to resource allocation index; Sending module 50, is coupled with mapping block 40, for send the 2nd DMRS sequence being mapped on RB subcarrier on PUSCH channel corresponding to RB subcarrier.
The embodiment of the present invention also provides the processing method of DMRS in a kind of MU-MIMO transmission system, and base station is that more than one the cooperation transmission user terminal UE that carries out MU-MIMO transmission sends the proprietary indication signaling of user for determining DMRS; What UE received that base station sends determines the proprietary signaling of user of DMRS for this UE, UE uses the proprietary signal deployment information of this user to determine this DMRS, it is characterized in that, UE is according to the instruction of signaling, produce M the RS sequence that length is 1 RB according to predetermined criterion, the DMRS sequence that is 1 RB by multiple length of correspondence according to the RB index distributing is synthesized, composition sequence is realized group/sequence redirect (SGH) and cyclic shift redirect (CSH) taking RB as granularity, concrete basic sequence and cyclic shift are relevant with RB position; Between different UE, there is cyclic shift biasing.Wherein, the production method of DMRS sequence, comprise: UE is according to the instruction of signaling, produce M the RS basic sequence that length is 1 RB according to predetermined criterion, wherein M represents the RB number that UE distributes, the basic sequence call number producing is relevant with RB location index, and basic sequence has desirable circulation autocorrelation and optimum cross correlation.
According to another aspect of the embodiment of the present invention, also provide a kind of by the method for the synthetic long DMRS sequence of short DMRS sequence, comprise: the DMRS basic sequence that is T RB by multiple length of correspondence according to the RB index distributing synthesizes, and composition sequence is taking T RB as granularity.Realize group/sequence redirect (SGH) and cyclic shift redirect (CSH) and cyclic shift redirect (CSH); Realize the redirect of group/sequence comprises taking T RB as granularity: group/sequence redirect mode is relevant with RB index, and group/sequence redirect mode of the identical RB of different UEs position is identical, and the group/sequence redirect mode between the different RB of identical UE can be different.Realizing cyclic shift redirect (CSH) can comprise taking T RB as granularity: cyclic shift redirect (CSH) mode of the identical RB of different UEs position is identical, and cyclic shift redirect (CSH) mode between the different RB of identical UE can be different.Wherein, the preferred value of T is 1.The DRMS producing by this programme, support is positioned at more than two user DMRS definitely orthogonal of same asset position, support the DMRS orthogonality under the overlapping scene of any portions of bandwidth, overcome the restriction of multiuser MIMO scene dispatching, can adaptive different multidiameter by adjusting cyclic shift interval, be not limited to user moving speed, there is no the loss of user's spectrum efficiency, strengthen the multiplexing capacity of DMRS, having avoided in different districts, carrying out in correlation technique to carry out MU-MIMO pairing UE in the UE of cooperation transmission and same cells cannot realize definitely orthogonal, there is the problem of scheduling restriction and the multiplexing off-capacity of DMRS, thereby improve the transmission performance of system.
Further illustrate the method for this preferred embodiment below in conjunction with accompanying drawing and instantiation.
Preferred embodiment
This preferred embodiment provides a kind of DMRS sequence generating method, Figure 10 is according to two UE that carry out MU-MIMO pairing in the embodiment of the present invention corresponding DMRS sequence schematic diagram on the RB of scheduling, wherein, the DMRS sequence that the DMRS of UE1 and UE2 is 1 RB by multiple length is synthesized, composition sequence is realized group/sequence redirect (SGH) and cyclic shift redirect (CSH) taking RB as granularity, concrete basic sequence and cyclic shift are relevant with RB position, have cyclic shift biasing between UE1 and UE2.UE1/UE2 produces and the method for transmitting DMRS can comprise the steps that one to step 7.
Step 1, what UE received that base station sends determines the signaling of DMRS for this UE, signaling comprises resource allocation index indication information, the virtual subdistrict id information that UE is proprietary.
Step 2, UE determines cyclic shift index and the basic sequence index of each transport layer according to virtual subdistrict id information and resource allocation index indication information.
Step 3, it is the DMRS basic sequence of a RB that UE generates length according to DMRS basic sequence index.
Step 4, UE is that the DMRS basic sequence of a RB and length that each transport layer cyclic shift index generates each user's transport layer are the interim DMRS sequence of 1 RB according to length.
Step 5, returns to step 3, repeating step three to four, and to generate the interim DMRS sequence of N length as 1 RB, wherein N is the RB number that UE distributes.
Step 6, UE according to Resources allocation index by N length be that the interim DMRS sequence of 1 RB is synthesized, determine complete DMRS sequence.
Step 7, UE to corresponding RB subcarrier, sends DMRS by transmitter module by sequence mapping on corresponding PUSCH channel.
In the time implementing, UE judges DMRS generating mode according to the proprietary signaling of DMRS user receiving, when be defined as under MU-MIMO scene enhancement method time, UE according to the proprietary virtual subdistrict id information of user determine length be 1 RB basic sequence (for example: obtain the special sequence based on QPSK keying by computer search, and one has 30 different sequences), there is cross correlation lower but non-zero from the DMRS sequence of different basic sequences, but the DMRS sequence from the different cyclic shifts of same basic sequence has perfect orthogonality (mutually noiseless), UE determines according to the Resource Block index distributing that respectively each length is cyclic shift redirect and the group redirect mode of the sequence of 1 RB.Then finally definite DMRS sequence allocation is mapped on each RB and is sent.
Pass through above-mentioned steps, communication system support is positioned at more than two user DMRS definitely orthogonal of same asset position, support the DMRS orthogonality under the overlapping scene of any portions of bandwidth, overcome the restriction of multiuser MIMO scene dispatching, can adaptive different multidiameter by adjusting cyclic shift interval, be not limited to user moving speed, there is no the loss of user's spectrum efficiency, strengthen the multiplexing capacity of DMRS, having avoided in different districts, carrying out in correlation technique to carry out MU-MIMO pairing UE in the UE of cooperation transmission and same cells cannot realize definitely orthogonal, there is the problem of scheduling restriction and the multiplexing off-capacity of DMRS, thereby improve the transmission performance of system.
To generate and send DMRS as background under different scenes, above preferred embodiment is described below.
Embodiment mono-
Suppose that base station determines that two terminals of carrying out MU-MIMO pairing transmission in community are respectively UE1 and UE2, the uplink transmission resource (being RB index) that each UE distributes is determined in base station, and UE1 Resources allocation is that { UE2 Resources allocation is { RB1, RB2, RB3} for RB1, RB2}.
Base station sends to respectively UE1 and the UE2 can be by two kinds of modes the proprietary signaling of user of the DMRS for determining UE1 and UE2 in the following manner.Mode one, dynamic signaling notice: first, by RRC configuration N cover UE-specific DMRS parameter, specifically use any set of parameter by up dynamic signaling (ULDCI) instruction UE1 and UE2.Mode two, semi-static signaling: directly by the semi-static configuration of RRC and notify a set of UE-specific DMRS parameter to UE1 and UE2.
As shown in figure 11, the UE1 that carries out MU-MIMO pairing transmission carries out following processing:
Step 1, what UE1 received that base station sends determines the signaling of DMRS for UE1, signaling comprises resource allocation index indication information, the virtual subdistrict id information that UE1 is proprietary
Step 2, UE1 is according to virtual subdistrict id information and resource allocation index indication information { RB1, RB2} determines the cyclic shift index α of each transport layer λ.
According to prior art, at time slot n sinterior cyclic shift index α λcomputational methods are as follows: α λ=2 π n cs, λ/ 12, wherein, n cs , λ = ( n DMRS ( 1 ) + n DMRS , λ ( 2 ) + n PN ( n s ) ) mod 12 .
According to above method, the UE1 and the UE2 that carry out MU-MIMO pairing have different cyclic shift index α λ; Wherein, parameter being configured by high level, is the proprietary parameter in community; by up dynamic signaling (UL DCI) instruction, it is the proprietary parameter of UE1; n PN ( n s ) = Σ i = 0 7 c ( 8 N symb UL · n s + i ) · 2 i , Wherein, function for pseudo-random variable, its initial value is or or wherein span [0,29].
RIV represents corresponding RB index, for UE1 on RB1, RIV=1, on RB2, RIV=2, bring into formula calculate.
According to above method, base station is that the UE1 and the UE2 that carry out MU-MIMO pairing configure identical virtual subdistrict id information therefore, the indicated parameter of UE1 and UE2 and n pN(n s) on identical RB, be all identical, distribute so value must be different, so just can ensure that two UE that carry out MU-MIMO pairing use different cyclic shifts.
Step 3, UE1 is according to virtual subdistrict id information and resource allocation index indication information { RB1, RB2} determines basic sequence group index.
At time slot n sthe computational methods of interior basic sequence group index u are as follows: u=(f gh(n s)+f ss) mod30, wherein, f gh ( n s ) = 0 ifgrouphoppingisdisabled ( Σ i = 0 7 c ( 8 n s + i ) · 2 i ) mod 30 ifgrouphoppingisenabled ,
Function c (8n s+ i) be pseudo-random variable, its initial value is
for the proprietary virtual subdistrict ID of UE1, notify or indicated by DCI by top signaling, wherein, f sscan be calculated by following two kinds of methods:
Method one, wherein RIV represents corresponding RB index, and the Resource Block distributing due to hypothesis UE1 is RB1 and RB2,, the f using on two RB ssparameter following (for the present invention improves technology):
On RB1, f ss = ( n ID RS + 1 ) mod 30 , On RB2, f ss = ( n ID RS + 2 ) mod 30 .
Method two, f under this kind of method ssvalue and the RB index of distribution irrelevant, f on RB1 and RB2 ssvalue identical.
According to above method, base station is that the UE1 and the UE2 that carry out MU-MIMO pairing configure identical virtual subdistrict id information identical frequency-hopping mode (enable simultaneously or do not enable), has identical f simultaneously on identical RB ss, the UE1 and the UE2 that therefore carry out MU-MIMO pairing have identical basic sequence group index u on identical RB, but the basic sequence group index having on not identical RB may identical also possibility difference.
Step 4, UE1 determines according to DMRS basic sequence group index u the DMRS basic sequence that a length is a RB concrete grammar includes but not limited to:
Method one: obtain by computer search the sequence that 30 length are 12, be numbered 0 ~ 29, determine corresponding sequence according to the value of u; Method two: generate Zadoff-Chu sequence sequence according to given parameter, the generating mode of Zadoff-Chu sequence sequence is prior art wherein, value be 12(this specify unlike the prior art), the value of q is decided by parameters u and v, with q ‾ = N ZC RS · ( u + 1 ) / 31 .
Step 5, UE is that the DMRS basic sequence of a RB and length that each transport layer cyclic shift index generates each user's transport layer are the interim DMRS sequence of 1 RB according to length 0≤n<12, wherein, α is the α that second step calculates λ,
Step 6, repeating step three to four, generating respectively N length is the interim DMRS sequence of 1 RB wherein, N is the RB number that UE distributes, for UE1, at this N=2.
Step 7, UE1 according to Resources allocation index by 2 length be the interim DMRS sequence of 1 RB synthesize, will be mapped to RB1 upper, will be mapped to RB2 upper,, determine complete DMRS sequence.
Step 8, UE1 sends DMRS on corresponding PUSCH channel.
Embodiment bis-
This embodiment and embodiment mono-are distinct in step 3.
The step 3 of the present embodiment is as follows: UE1 is according to virtual subdistrict id information and resource allocation index indication information RB1, RB2} determines basic sequence group index;
At time slot n sthe computational methods of interior basic sequence group index u are as follows: u=f gh(n s)+f ss) mod30,
Wherein, f gh ( n s ) = 0 ifgrouphoppingisdisabled ( &Sigma; i = 0 7 c ( 8 n s + i ) &CenterDot; 2 i ) mod 30 ifgrouphoppingisenabled ,
Function c (8n s+ i) be pseudo-random variable, its initial value is or or wherein RIV is the RB index distributing, and for UE1, on RB1, RIV is 1, and on RB2, RIV is 2, brings respectively formula into and calculates.
for the proprietary virtual subdistrict ID of UE1, notify or indicated by DCI by top signaling;
According to above method, base station is that the UE1 and the UE2 that carry out MU-MIMO pairing configure identical virtual subdistrict id information identical frequency-hopping mode (enable simultaneously or do not enable), has identical f simultaneously on identical RB ss, the UE1 and the UE2 that therefore carry out MU-MIMO pairing have identical basic sequence group index u on identical RB, but the basic sequence group index having on not identical RB may identical also possibility difference.
Embodiment tri-
Suppose that base station determines that two terminals of carrying out MU-MIMO pairing transmission in community are respectively UE1 and UE2, the uplink transmission resource (being RB index) that each UE distributes is determined in base station, UE1 Resources allocation is { RB1, RB2}, UE2 Resources allocation is { RB1, RB2, RB3}, the proprietary signaling of user of the DMRS for determining UE1 and UE2 is sent to respectively in the following manner UE1 and UE2 by base station:
Mode one, dynamic signaling notice: first, by RRC configuration N cover UE-specific DMRS parameter, specifically use which set of parameter by up dynamic signaling (UL DCI) instruction UE1 and UE2, parameter comprises each user's transport layer cyclic shift index α λand DMRS basic sequence group index u.
Mode two, semi-static signaling: directly by the semi-static configuration of RRC and notify a set of UE-specific DMRS parameter to UE1 and UE2, parameter comprises each user's transport layer cyclic shift index α λand DMRS basic sequence group index u.
Each user's transport layer cyclic shift index α is determined according to certain criterion in base station λ, this criterion comprises: UE1 and UE2 are at identical RB and identical transport layer cocycle displacement index α λvalue difference, u is identical for basic sequence group index.
The UE1 that carries out MU-MIMO pairing transmission carries out following treatment step:
Step 1, what UE1 received that base station sends determines the proprietary signaling of user of DMRS for this UE1, signaling comprises: each user's transport layer cyclic shift index α λand DMRS basic sequence group index u.In this embodiment, be the transport layer cyclic shift index α directly being sent by base station λand DMRS basic sequence group index u.
Step 2, UE1 receives resource allocation index indication information { RB1, the RB2} that base station sends.
The DMRS basic sequence group index that UE1 uses on RB1 and RB2 is respectively u1 and u2, has following two kinds of account forms:
Mode one, u1=u; U2=u;
Mode two, u1=(u+RIV1) mod30, u2=(u+RIV2) mod30, wherein, and for UE1, RIV1=1, RIV2=2.
Step 3, it is the DMRS basic sequence of a RB that UE1 generates length according to DMRS basic sequence group index u1 (u2) its implementation can be referring to the step 4 of embodiment mono-, and this step is identical with it.
Step 4, UE1 is that the DMRS basic sequence of a RB and length that each transport layer cyclic shift index generates each transport layer are the interim DMRS sequence of 1 RB according to length its implementation can be referring to the step 5 of embodiment mono-, and this step is identical with it.
Step 5, repeating step three to four, generating respectively N length is the interim DMRS sequence of 1 RB wherein, N is the RB number that UE distributes, for UE1, at this N=2.
Step 6, UE1 according to Resources allocation index by 2 length be the interim DMRS sequence of 1 RB with synthesize, will be mapped to RB1 upper, will be mapped to RB2 upper, determine complete DMRS sequence.
Step 7, UE1 sends DMRS at PUSCH channel.
Embodiment tetra-
Suppose that base station determines that two terminals of carrying out MU-MIMO pairing transmission in community are respectively UE1 and UE2 and UE3, UE2 determines base station the uplink transmission resource (being RB index) that each UE distributes, UE1 Resources allocation is { RB1, RB2}, UE2 Resources allocation is { RB1, RB2, RB3}, the resource that UE3 distributes be RB3}, base station sends to respectively UE1, UE2 and UE3 in the following manner by the proprietary signaling of user of the DMRS for definite UE1, UE2 and UE3:
Mode one, dynamic signaling notice: first, by RRC configuration N cover UE-specific DMRS parameter, specifically use any set of parameter by up dynamic signaling (UL DCI) instruction UE1, UE2 and UE3.
Mode two, semi-static signaling: directly by the semi-static configuration of RRC and notify a set of UE-specific DMRS parameter to UE1, UE2 and UE3.
As shown in figure 12, the UE2 that carries out MU-MIMO pairing transmission carries out following treatment step:
Step 1, what UE2 received that base station sends determines the signaling of DMRS for UE2, signaling comprises resource allocation index indication information, the virtual subdistrict id information that UE2 is proprietary
Step 2, UE2 is according to virtual subdistrict id information and resource allocation index indication information { RB3} determines the cyclic shift index α of each transport layer for RB1, RB2 λ, the concrete grammar of its realization can be referring to the step 2 in embodiment mono-.
According to above method, base station is that UE1, the UE2 and the UE3 that carry out MU-MIMO pairing configure identical virtual subdistrict id information therefore, the indicated parameter of UE1, UE2 and UE3 and n pN(n s) be all identical, distribute so value must be different, so just can ensure that two couples of UE that carry out MU-MIMO pairing use different cyclic shifts.
Step 3, UE2 is according to virtual subdistrict id information and resource allocation index indication information { RB3} determines basic sequence group index for RB1, RB2.
At time slot n sthe concrete grammar of interior basic sequence group index u can be shown in the step 3 in embodiment mono-.
Wherein, f sscan be calculated by following two kinds of methods:
Method one, wherein RIV represents corresponding RB index, and the Resource Block distributing due to hypothesis UE1 is RB1 and RB2, the f using on two RB ssparameter following (for the present invention improves technology):
On RB1, f ss = ( n ID RS + 1 ) mod 30 ;
On RB2, f ss = ( n ID RS + 2 ) mod 30 ;
On RB3, f ss = ( n ID RS + 3 ) mod 30 .
Method two, f under this kind of method ssvalue and the RB index of distribution irrelevant, f on RB1 and RB2 and RB3 ssvalue identical.
According to above method, base station is that UE1, the UE2 and the UE3 that carry out MU-MIMO pairing configure identical virtual subdistrict id information identical frequency-hopping mode (enable or do not enable), has identical f simultaneously on identical RB ss, UE1, the UE2 and the UE3 that therefore carry out MU-MIMO pairing have identical basic sequence group index u on identical RB, but the basic sequence group index having on not identical RB may identical also possibility difference.
Step 4, it is the DMRS basic sequence of a RB that UE2 generates length according to DMRS basic sequence group index u its concrete methods of realizing can be identical with the step 4 of embodiment mono-.
Step 5, UE2 is that the DMRS basic sequence of a RB and length that each transport layer cyclic shift index generates each transport layer are the interim DMRS sequence of 1 RB according to length its concrete grammar can be identical with embodiment mono-step 5.
Step 6, repeating step four to five, generating respectively N length is the interim DMRS sequence of 1 RB wherein N is the RB number that UE2 distributes, for UE1, at this N=2.
Step 7, UE2 according to Resources allocation index by 2 length be the interim DMRS sequence of 1 RB with synthesize, will be mapped to RB1 upper, will be mapped to RB2 upper, determine complete DMRS sequence.
Step 8, UE2 sends DMRS at PUSCH channel.
Embodiment five
In above embodiment, the granularity unit that DMRS sequence generates is 1 RB, and the value of T is optimum value 1, but T also can get other values, and in the present embodiment, the value of T is 2.
Suppose that base station determines that two terminals of carrying out MU-MIMO pairing transmission in community are respectively UE1 and UE2, the uplink transmission resource (being RB index) that each UE distributes is determined in base station, UE1 Resources allocation is { RB1, RB2}, UE2 Resources allocation is { RB1, RB2, RB3, RB4}, specific implementation method and embodiment mono-are similar, and the main distinction is step 4.
In the present embodiment, the UE1 of step 4 determines according to DMRS basic sequence group index u the DMRS basic sequence that a length is two RB concrete grammar includes but not limited to:
Method one, obtains by computer search the sequence that 30 length are 24, is numbered 0 ~ 29, determines corresponding sequence according to the value of u; Method two, generates Zadoff-Chu sequence sequence, the generating mode of Zadoff-Chu sequence sequence according to given parameter;
r &OverBar; u , v ( n ) = x q ( n mod N ZC RS ) , 0 &le; n < M sc RS , Wherein, x q ( m ) = e - j &pi;qm ( m + 1 ) N ZC RS , 0 &le; m &le; N ZC RS - 1 , N ZC RS Value be 24(this specify unlike the prior art).The DMRS sequence of UE1 is the single sequence of above generation, and the DMRS sequence of UE2 is the composition sequence of two single sequences that generate above.
As can be seen from the above description, the present invention has realized following technique effect:
By using the embodiment of the present invention, can make communication system support be positioned at more than two user DMRS definitely orthogonal of same asset position, support the DMRS orthogonality under the overlapping scene of any portions of bandwidth, overcome the restriction of multiuser MIMO scene dispatching, can adaptive different multidiameter by adjusting cyclic shift interval, be not limited to user moving speed, there is no the loss of user's spectrum efficiency, strengthen the multiplexing capacity of DMRS, having avoided in different districts, carrying out in correlation technique to carry out MU-MIMO pairing UE in the UE of cooperation transmission and same cells cannot realize definitely orthogonal, there is the problem of scheduling restriction and the multiplexing off-capacity of DMRS, thereby improve the transmission performance of system.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (13)

1. a up link demodulated reference signal DMRS processing method, is characterized in that, comprising:
User equipment (UE) receives the first signaling from base station;
Described UE generates multiple DMRS sequences according to described the first signaling;
Described UE combines to generate the 2nd DMRS sequence by described DMRS sequence.
2. method according to claim 1, it is characterized in that, the virtual subdistrict mark id information that comprises resource allocation index indication information and described UE in described the first signaling, described UE generates multiple DMRS sequences according to the virtual subdistrict id information of described resource allocation index indication information and described UE, and according to the described multiple DMRS sequences of described resource allocation index indication information combination.
3. method according to claim 2, it is characterized in that, described UE will generate multiple DMRS sequences according to the virtual subdistrict id information of described resource allocation index indication information and described UE, and comprises according to the described multiple DMRS sequences of described resource allocation index indication information combination:
Described UE generates N the described DMRS sequence that length is T Resource Block RB according to the virtual subdistrict id information of described resource allocation index indication information and described UE;
Combining a described N length according to described resource allocation index indication information is that a DMRS sequence of T RB is to generate complete described the 2nd DMRS sequence;
Wherein, described N is more than or equal to 1 natural number, and described T is more than or equal to 1 natural number.
4. method according to claim 3, is characterized in that, described UE generates according to the virtual subdistrict id information of described resource allocation index indication information and described UE the described DMRS sequence that N length is T Resource Block RB and comprises:
Described UE determines cyclic shift index and the basic sequence index of each transport layer of described UE according to the virtual subdistrict id information of described resource allocation index indication information and described UE;
It is the DMRS basic sequence of T RB that described UE generates length according to described basic sequence index;
Described UE is that the DMRS basic sequence of T RB and the cyclic shift index of described each transport layer generate N the described DMRS sequence that length is T RB according to described length.
5. method according to claim 3, is characterized in that, combining a described N length according to described resource allocation index indication information is that a DMRS sequence of T RB comprises to generate complete described the 2nd DMRS sequence:
The described DMRS sequence that described UE is T RB according to resource allocation index by a described N length combines, and to obtain complete described the 2nd DMRS sequence, wherein, described resource allocation index obtains according to described resource allocation index indication information.
6. method according to claim 1, is characterized in that,
The basic sequence index that comprises transport layer cyclic shift index and described DMRS in described the first signaling, described UE generates multiple DMRS sequences according to described transport layer cyclic shift index and described basic sequence index, and combines a described multiple DMRS sequence.
7. method according to claim 6, is characterized in that, described UE is the multiple DMRS sequences that generate according to described transport layer cyclic shift index and described basic sequence index, and combines a described multiple DMRS sequence and comprise:
It is the DMRS basic sequence of T RB that described UE generates length according to described basic sequence index;
Described UE is that the DMRS basic sequence of T RB and the cyclic shift index of described each transport layer generate N the described DMRS sequence that length is T RB according to described length;
The described DMRS sequence that described UE is T RB according to resource allocation index by a described N length combines, to obtain complete described the 2nd DMRS sequence, wherein, described resource allocation index is that the resource allocation index indication information sending according to base station obtains.
8. according to the method described in any one in claim 3-5 and 7, it is characterized in that, the value of described T is 1.
9. a up link demodulated reference signal DMRS processing unit, is characterized in that, comprising:
Receiver module, for receiving the first signaling from base station;
Generation module, for generating multiple DMRS sequences according to described the first signaling;
Composite module, combines to generate the 2nd DMRS sequence for described UE by described DMRS sequence.
10. device according to claim 9, is characterized in that,
Described generation module, also, for comprising in described the first signaling the virtual subdistrict mark id information of resource allocation index indication information and described UE, generate multiple DMRS sequences according to the virtual subdistrict id information of described resource allocation index indication information and described UE;
Described composite module, also in the situation that described the first signaling comprises resource allocation index indication information, according to the described multiple DMRS sequences of described resource allocation index indication information combination.
11. devices according to claim 10, is characterized in that, described generation module comprises:
The first generation unit, generates N the described DMRS sequence that length is T Resource Block RB for the virtual subdistrict id information according to described resource allocation index indication information and described UE;
The second generation unit is that a DMRS sequence of T RB is to generate complete described the 2nd DMRS sequence for combine a described N length according to described resource allocation index indication information;
Wherein, described N is more than or equal to 1 natural number, and described T is more than or equal to 1 natural number.
12. devices according to claim 9, is characterized in that,
Described generation module, also for the basic sequence index that comprises transport layer cyclic shift index and described DMRS in described the first signaling, according to multiple DMRS sequences of described transport layer cyclic shift index and the generation of described basic sequence index;
Described composite module, also for combining according to described multiple DMRS sequences of described transport layer cyclic shift index and the generation of described basic sequence index.
13. devices according to claim 12, is characterized in that,
Described generation module comprises:
The 3rd generation unit is the DMRS basic sequence of T RB for generating length according to described basic sequence index;
The 4th generation unit, for according to described length being the DMRS basic sequence of T RB and N the described DMRS sequence that length is T RB of the cyclic shift index of described each transport layer generation;
Described composite module comprises:
Assembled unit, combine for a described DMRS sequence that is T RB by a described N length according to resource allocation index, to obtain complete described the 2nd DMRS sequence, wherein, described resource allocation index is that the resource allocation index indication information sending according to base station obtains.
CN201310027132.9A 2013-01-24 2013-01-24 DMRS processing method and processing device Active CN103974418B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201310027132.9A CN103974418B (en) 2013-01-24 2013-01-24 DMRS processing method and processing device
PCT/CN2013/085510 WO2014114113A1 (en) 2013-01-24 2013-10-18 Dmrs processing method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310027132.9A CN103974418B (en) 2013-01-24 2013-01-24 DMRS processing method and processing device

Publications (2)

Publication Number Publication Date
CN103974418A true CN103974418A (en) 2014-08-06
CN103974418B CN103974418B (en) 2019-04-05

Family

ID=51226889

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310027132.9A Active CN103974418B (en) 2013-01-24 2013-01-24 DMRS processing method and processing device

Country Status (2)

Country Link
CN (1) CN103974418B (en)
WO (1) WO2014114113A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104811406A (en) * 2015-05-05 2015-07-29 华为技术有限公司 Method and device for demodulating physical uplink shared channels
WO2016107430A1 (en) * 2014-12-31 2016-07-07 华为技术有限公司 Method and device for transferring uplink data
WO2017031620A1 (en) * 2015-08-21 2017-03-02 华为技术有限公司 Wireless communication method, network device, user equipment, and system
CN107040354A (en) * 2016-02-04 2017-08-11 中兴通讯股份有限公司 Up DMRS collocation method, network element, up DMRS transmission method and device
CN107181580A (en) * 2016-03-11 2017-09-19 北京信威通信技术股份有限公司 Extend the method for the supported maximum UE port numbers of up DMRS
CN107248905A (en) * 2016-03-24 2017-10-13 北京信威通信技术股份有限公司 A kind of up DMRS transmission methods of multiuser MIMO
CN107431682A (en) * 2015-02-10 2017-12-01 高通股份有限公司 DMRS for higher-order MU MIMO strengthens
WO2018010586A1 (en) * 2016-07-13 2018-01-18 上海朗帛通信技术有限公司 Method and apparatus in wireless communications
CN108270538A (en) * 2017-01-04 2018-07-10 中兴通讯股份有限公司 The parameter of reference signal determines, sending method and device, terminal, base station
CN108781197A (en) * 2016-03-23 2018-11-09 瑞典爱立信有限公司 Method and apparatus for reducing the cubic metric in link block reference signal design
CN109392102A (en) * 2017-08-04 2019-02-26 维沃移动通信有限公司 Sending method, detection method, relevant device and the system of DCI format message
CN110036589A (en) * 2016-09-30 2019-07-19 瑞典爱立信有限公司 The effective uplink DMRS sequence of power and resource for IFDMA
WO2020143757A1 (en) * 2019-01-11 2020-07-16 Mediatek Inc. Ue multiplexing for dmrs transmission
CN111757330A (en) * 2019-03-27 2020-10-09 华为技术有限公司 User pairing method and related equipment
WO2020220475A1 (en) * 2019-04-28 2020-11-05 华为技术有限公司 Communication method and device
US11539593B2 (en) 2017-09-14 2022-12-27 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Activation method for bandwidth part and related products

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10708013B2 (en) 2016-03-30 2020-07-07 Intel Corporation Systems and methods for uplink DMRS enhancement in FD-MIMO

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101645868A (en) * 2009-08-31 2010-02-10 中兴通讯股份有限公司 Transmission method and device of reference signals
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
CN101989871A (en) * 2009-07-30 2011-03-23 大唐移动通信设备有限公司 Sending method, device and system of detection reference signal
CN102055519A (en) * 2009-11-05 2011-05-11 中兴通讯股份有限公司 Method and device for demodulating data reference mark sequence
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
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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102404854B (en) * 2011-11-04 2018-04-06 中兴通讯股份有限公司 The resource allocation method and system of a kind of uplink demodulation reference signal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101989871A (en) * 2009-07-30 2011-03-23 大唐移动通信设备有限公司 Sending method, device and system of detection reference signal
CN101645868A (en) * 2009-08-31 2010-02-10 中兴通讯股份有限公司 Transmission method and device of reference signals
CN102055519A (en) * 2009-11-05 2011-05-11 中兴通讯股份有限公司 Method and device for demodulating data reference mark sequence
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

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016107430A1 (en) * 2014-12-31 2016-07-07 华为技术有限公司 Method and device for transferring uplink data
CN107431682A (en) * 2015-02-10 2017-12-01 高通股份有限公司 DMRS for higher-order MU MIMO strengthens
US11677448B2 (en) 2015-02-10 2023-06-13 Qualcomm Incorporated DMRS enhancement for higher order MU-MIMO
CN107431682B (en) * 2015-02-10 2021-06-11 高通股份有限公司 Method and apparatus for DMRS enhancement for higher order MU-MIMO
WO2016177329A1 (en) * 2015-05-05 2016-11-10 华为技术有限公司 Physical uplink shared channel demodulating method and device
CN104811406A (en) * 2015-05-05 2015-07-29 华为技术有限公司 Method and device for demodulating physical uplink shared channels
CN104811406B (en) * 2015-05-05 2018-01-12 华为技术有限公司 Physical uplink shared channel demodulation method and device
US11082971B2 (en) 2015-08-21 2021-08-03 Huawei Technologies Co., Ltd. Wireless communications method and system, network device, and user equipment
CN112134665A (en) * 2015-08-21 2020-12-25 华为技术有限公司 Wireless communication method, network equipment, user equipment and system
US11985635B2 (en) 2015-08-21 2024-05-14 Huawei Technologies Co., Ltd. Wireless communication method, system, network device, and user equipment for improving transmission performance
CN112134665B (en) * 2015-08-21 2024-04-09 华为技术有限公司 Wireless communication method, network equipment, user equipment and system
WO2017031620A1 (en) * 2015-08-21 2017-03-02 华为技术有限公司 Wireless communication method, network device, user equipment, and system
CN107079428A (en) * 2015-08-21 2017-08-18 华为技术有限公司 Method, the network equipment, user equipment and the system of radio communication
CN107040354A (en) * 2016-02-04 2017-08-11 中兴通讯股份有限公司 Up DMRS collocation method, network element, up DMRS transmission method and device
CN107181580A (en) * 2016-03-11 2017-09-19 北京信威通信技术股份有限公司 Extend the method for the supported maximum UE port numbers of up DMRS
CN108781197A (en) * 2016-03-23 2018-11-09 瑞典爱立信有限公司 Method and apparatus for reducing the cubic metric in link block reference signal design
CN107248905A (en) * 2016-03-24 2017-10-13 北京信威通信技术股份有限公司 A kind of up DMRS transmission methods of multiuser MIMO
WO2018010586A1 (en) * 2016-07-13 2018-01-18 上海朗帛通信技术有限公司 Method and apparatus in wireless communications
CN110036589A (en) * 2016-09-30 2019-07-19 瑞典爱立信有限公司 The effective uplink DMRS sequence of power and resource for IFDMA
US11689331B2 (en) 2016-09-30 2023-06-27 Telefonaktiebolaget Lm Ericsson (Publ) Power and resource efficient uplink DMRS sequences for IFDMA
US11201709B2 (en) 2017-01-04 2021-12-14 Zte Corporation Method and apparatus for determining and transmitting parameter of reference signal, terminal device and base station
CN108270538A (en) * 2017-01-04 2018-07-10 中兴通讯股份有限公司 The parameter of reference signal determines, sending method and device, terminal, base station
CN109392102A (en) * 2017-08-04 2019-02-26 维沃移动通信有限公司 Sending method, detection method, relevant device and the system of DCI format message
CN109392102B (en) * 2017-08-04 2021-06-22 维沃移动通信有限公司 DCI format message sending method, DCI format message detection method, related equipment and system
US11539593B2 (en) 2017-09-14 2022-12-27 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Activation method for bandwidth part and related products
US11218288B2 (en) 2019-01-11 2022-01-04 Mediatek Inc. Low PAPR reference signal
CN111684845A (en) * 2019-01-11 2020-09-18 联发科技股份有限公司 UE multiplexing for DMRS transmission
CN111699656B (en) * 2019-01-11 2023-05-05 联发科技股份有限公司 User equipment and wireless communication method thereof
WO2020143757A1 (en) * 2019-01-11 2020-07-16 Mediatek Inc. Ue multiplexing for dmrs transmission
CN111699656A (en) * 2019-01-11 2020-09-22 联发科技股份有限公司 Low PAPR reference signal
TWI724745B (en) * 2019-01-11 2021-04-11 聯發科技股份有限公司 Methods and user equipment for wireless communication
CN111757330B (en) * 2019-03-27 2021-12-28 华为技术有限公司 User pairing method and related equipment
CN111757330A (en) * 2019-03-27 2020-10-09 华为技术有限公司 User pairing method and related equipment
WO2020220475A1 (en) * 2019-04-28 2020-11-05 华为技术有限公司 Communication method and device
CN114026932A (en) * 2019-04-28 2022-02-08 华为技术有限公司 Communication method and device

Also Published As

Publication number Publication date
CN103974418B (en) 2019-04-05
WO2014114113A1 (en) 2014-07-31

Similar Documents

Publication Publication Date Title
CN103974418A (en) DMRS processing method and device
US9843466B2 (en) Method and apparatus for generating an uplink reference signal sequence in a wireless communication system
US9967075B2 (en) Radio communication system, base station, radio communication apparatus, and radio communication method
CN102246446B (en) Method and apparatus for signal transmission in wireless communication system
US8170126B2 (en) Reference signal structure for OFDM based transmissions
US8059735B2 (en) Allocation of block spreading sequences
CN103004125B (en) Method and apparatus for transmitting uplink reference signal in a multi-antenna wireless communication system
CN101989871B (en) Sending method, device and system of detection reference signal
US10469222B2 (en) Method and MTC device for transmitting DMRS for uplink data demodulation
CN101330321B (en) Method and device for assigning reference signal sequences in mobile communications system
EP2425574B1 (en) Demodulation reference signals in a communication system
CN101682876B (en) Base station device, mobile station and wireless communication system, and communication control method
CN102461052B (en) Transmission of reference signal on non-contiguous clusters of resources
CN102804629B (en) Mobile terminal device, wireless base station device, and communication control method
CN102696193A (en) Method and apparatus for generating a reference signal sequence in a wireless communication system
CN105075144A (en) Transmission apparatus and control signal mapping method
CN103973392A (en) Parameter sending method and device and uplink demodulation reference signal emission method and device
CN101764627A (en) Method for confirming demodulation pilot frequency sequence of uplink, terminal and uplink system
CN102315870A (en) Downlink control information (DCI) indication method and apparatus thereof
CN106411486A (en) Method and apparatus for transmitting and receiving uplink demodulation pilot carrier
CN109803393A (en) Method for sending information and device
US10158470B2 (en) Method for operating a radio station in a mobile network
CN104995886B (en) Information transferring method and device
CN109802784B (en) PUCCH transmission method, mobile communication terminal and network side equipment
CN103813456A (en) Method, related devices and system of resource allocation

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant