CN107294682A - DMRS sending method and device - Google Patents

DMRS sending method and device Download PDF

Info

Publication number
CN107294682A
CN107294682A CN201610203732.XA CN201610203732A CN107294682A CN 107294682 A CN107294682 A CN 107294682A CN 201610203732 A CN201610203732 A CN 201610203732A CN 107294682 A CN107294682 A CN 107294682A
Authority
CN
China
Prior art keywords
dmrs
csi
type
port
resource
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.)
Pending
Application number
CN201610203732.XA
Other languages
Chinese (zh)
Inventor
蔡剑兴
肖华华
弓宇宏
陈艺戬
李儒岳
吴昊
鲁照华
李永
王瑜新
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 CN201610203732.XA priority Critical patent/CN107294682A/en
Priority to PCT/CN2017/078321 priority patent/WO2017167156A1/en
Publication of CN107294682A publication Critical patent/CN107294682A/en
Pending legal-status Critical Current

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
    • 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
    • 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

Landscapes

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

Abstract

The invention provides the sending method of DMRS a kind of and device, wherein, the sending method of the DMRS includes：DMRS types are selected from least two different DMRS types；Send the DMRS that the above-mentioned DMRS types of selection are indicated.By the present invention, RE occupancies present in correlation technique are solved greatly, the problem of resource utilization is low, and then reduction RE occupancies have been reached, improve the effect of resource utilization.

Description

DMRS sending method and device
Technical field
The present invention relates to the communications field, in particular to a kind of DMRS sending method and device.
Background technology
In wireless communication system, transmitting terminal and receiving terminal can typically use many antennas to be transmitted and receive to obtain more High speed.One original of multiple-input and multiple-output (multiple-input-multiple-output, referred to as MIMO) technology Reason is some features using channel to form the multilayer transmission of match channels feature, so as to not increase bandwidth and power On the basis of just obtain significant performance boost, this is also widely applied in current system.Such as in Long Term Evolution (Long Term Evolution, referred to as LTE) and its enhancing version senior long term evolution (Long Term Evolution- Advanced, referred to as LTE A) there is the pattern of a variety of multi-antenna technologies transmission in system, wherein, transmission mode 2 is null tone point Collection, transmission mode 3 is Open-Loop Spatial Multiplexing or is open loop MIMO techniques, and transmission mode 4 is Closed-Loop Spatial Multiplexing, transmission mode 5 be multiuser MIMO, and transmission mode 6 is the Closed-Loop Spatial Multiplexing of single data stream, and transmission mode 7 and 8 is respectively single current and double fluid Wave beam forming, and transmission mode 9 supports maximum 8 layers of spatial reuse, and can realize the adaptive switching for working as user and multi-user, The adaptive switching of the data number of plies, supports open loop MIMO and closed-loop MIMO pattern.
In above-mentioned transmission mode, user feedback precoding matrix indicators (Precoding Matrix the need for having Indicator, referred to as PMI), this to be referred to as closed-loop MIMO techniques, what is had does not need feeding back precoding matrix designator (Precoding Matrix Indicator, referred to as PMI), it is this to be referred to as open loop MIMO techniques.Defined in LTE/LTE A this A little transmission modes, primarily to adapting to the channel characteristics of different user and the receiving ability of user.Such as received for 1 piece-root grafting It can only use the MIMO technology that the multiplexing number of plies is 1 to the user of antenna, and channel variation is than faster user, it may be considered that using opening The MIMO technology of ring because user moving speed than it is very fast when, the change of channel is than very fast, in feedback cycle, closed loop Spatial reuse feedback precoding information can not be accurately and timely the next feedback cycle in reaction base station in descending channel information, So as to which the decline of performance can be caused.And Open-Loop Spatial Multiplexing technology is due to that need not feed back precoding information, with more preferable Shandong Rod.
LTE/LTE A earlier version such as Release 8/Release 9 are using based on cell common reference signal The open loop MIMO of (Cell-specific Reference Signal, referred to as CRS), it is to utilize TM3 (that is, transmission modes 3) realize, and demodulation is main considers to be demodulated using CRS method.Because CRS maximums support 4 ports, so TM3 Do not support the situation more than 4 ports.
As the sending port that base station is configured is more and more, the open loop MIMO techniques of more multiport are supported to be also required to be propped up Hold, in LTE/LTE A release 10 and later version, define transmission mode 9 and transmission mode 10, it can be with Open loop MIMO is done based on demodulated reference signal (Demodulation Reference Signal, referred to as DMRS).In correlation LTE/LTE A agreements in DMRS be UE-specific Reference Signal associated with PDSCH, That is the reference signal for downlink transfer special UE, it is necessary to which DMRS is mapped into day by precoding W before DMRS is sent Line end mouthful gets on, and is sent by antenna port.Precoding W and same Physical Resource Block that it is typically used Data or enhancing down control channel (enhance in (Physical Resource Block, referred to as PRB) Physical Downlink Control Channel, referred to as ePDCCH) precoding that uses is identical so that terminal with DMRS carries out data/enhanced Physical Downlink Control Channel (Enhanced Physical Downlink Control Channel, referred to as ePDCCH) demodulation when, it is not necessary to base station allocating pre-coding W information, directly with demodulated reference signal (De Modulation Reference Signal, referred to as DMRS) channel of estimation demodulates to data or ePDCCH, this warp Cross the DMRS that the DMRS sent after precoding is referred to as precoding.In the LTE/LTE A versions of 10~release of release 13 In, DMRS could support up 8 ports, respectively port { 7,8,9,10,11,12,13,14 }.Each port occupies 12 respectively Resource units (Resource Element, referred to as RE).
In the open loop MIMO based on DMRS, because terminal will not feed back precoding information, so base station does not have priori Information transmits data to be determined at the precoding of descending matching, so as to cause hydraulic performance decline because precoding is inaccurate, especially It is, in the open-loop precoding situation based on multiple PRB pair granularities, once the precoding of selection is improper, to easily cause whole data One PRB pair is exactly divided into multiple resource granularity group (Resource Element by a kind of bust this of block, method Group, referred to as REG), each REG is independently using a precoding, so as to efficiently traverse through different code words, so as to carry The performance of high system.
Next the background context of code book is illustrated：LTE code book is with the evolution of Standard Edition, also continuous Evolution, the code book of 4 antennas and the code book of 2 antennas are all the forms of single codeword in version Release 8 and Release 9, only There is PMI its value to be expressed as i=0 ..., N11-1, N11 is the number of code word.Release 10 8 antenna codebooks and It is exactly that the form of this feedback of dicode, i.e. code word can be write as W=WL*WS form during Release 12 4 antenna codebook, And WL is the code book of long-term feedback, typically there is N11 group, each group includes M1 alternative wave beams, N11 group of user's selection One group index feeds back to base station, and this feedback is typically quantified and fed back with PMI1, and its value typically uses i1==0 ..., N11- 1 represents, N11 is the number of the WL；WS represents the code book of a short-term feedback, and its effect is that M1 are selected in WL code words One in alternative wave beam, and the beam selection polarization phases Co- of each polarised direction selection for same data Layer Each code word in phasing, WS is quantified and fed back with PMI2, and its value is i2=0 ..., and M1-1, M1 is WS number, wherein N11 under every kind of rank is different with M1 value, specifically may be referred to the agreements of LTE Release 10.
Code word before R12 belongs to 1D code word, in Release 13 code book both for 1D aerial arrays In design, due to having used more antennas, the dimension of code book becomes much larger.The topology of antenna is typically also planar array , that is, there is the Antenna Design 2D code word in two dimension directions.So as to which each wave beam in code word W L has the shape that form 2 is tieed up FormulaWherein, vmAnd unDiscrete fourier vector (the Discrete Fourier of respectively the first dimension and the second dimension Transform, referred to as DFT), m=1,2 ..., N11, n=1,2 ..., N12。Represent vmAnd unKronecker multiply Product, (port, which can include antenna/port/ ports/transmission unit/a period of time/array element etc., can send signal for the first dimension port Device) N1 are counted, the second dimension port number N2, the corresponding DFT in the first dimension port has carried out O1 times of over-sampling, the second dimension The corresponding DFT in port of degree has carried out the discrete fourier of O2 times of over-sampling, first dimension or the second dimension antenna The number of vector is the multiple of the oversample factor of port number, so there is N11=N1*O1, N12=N2*O2, O1 is the first dimension Decimation factor is spent, O2 is the second dimension oversample factor.The code book of first dimension is represented with PMI11 in WL, and its value is i11 The code book of=0 ..., N11-1, the second dimension represents that its value is i12=0 ..., N12-1 with PMI12.For above-mentioned each Individual PMI11 and PMI12 index, there is M1 WS code word, and each WS code words are exactly in order to which wave beam is tieed up in selection 2 in WL And the Co-phasing of different polarised directions, corresponding codewords indexes are PMI2, are represented with i2=0 ..., M1-1.Do not lose one As property, the first dimension port number N11=1 or the second dimension port number N12=1 code word are called 1D code words, and the first dimension Port number N11>The 1 and second dimension port number N12>1 code word turns into 2D code words.If 1D code words and be single codeword structure use PMI or i represent, if 1D code words and being represented jointly with PMI1 and PMI2 in double codeword structures, indexes common by i1/i2 Represent, if tri- code book indexes of 2D code words PMI11, PMI12, PMI2 represent or that by indexing i11 i12, i2 is common jointly With expression.
Third generation collaborative project tissue (The 3rd Generation Partnership Project, referred to as 3GPP) Also introduce channel condition information (Channel State Information, referred to as CSI) process process concept, base Multiple CSI process can be configured for terminal by standing, and equivalent to one channel condition information of each CSI process is measured and anti- It is independent between feed journey, each CSI process, parameter configuration can be carried out respectively.In transmission mode 9,1 is supported 4 Process of maximum can be supported in Process, transmission mode 10.Channel defined in each CSI process configuration The configuration of part and the configuration of interferometry part and feedback model are measured, interferometry part can be single interferometry Configuration csi-IM-ConfigId can also be the configuration csi-IM-ConfigIdList of interferometry list, and the latter is mainly used in Time division duplex (Time Division Duplex, referred to as TDD) supports enhanced interference management and service adaptation The situation of (enhanced Interference Management and Traffic Adaptation, referred to as eIMTA). Some other configuration informations such as pilot power Pc information, code book limitation can also be included in CSI process configuration The bitmap configured informations of (Codebook Subset Restriction), the configured information of 4Tx code books version selection.
The measurement of channel information and the classification of feedback have two kinds：Respectively Class A and Class B.Class A refer to base Stood transmission CSI-RS, generally non-precoded pilot tone, and UE, which is based on channel condition information measurement pilot tone CSI-RS, directly to be believed Road is measured and CSI quantifies, and obtains order instruction (Rank Indicator, referred to as RI)/pre-coding matrix instruction (Precoding Matrix Indicator, referred to as PMI) and the instruction of/channel quality (Channel Quality Indication, referred to as CQI).By these contents physically row control channel (Physical Uplink Control Channel, referred to as PUCCH) or on Physical Uplink Shared Channel (Physical Uplink Shared Channel, referred to as PUSCH) carry out anti- Feedback.Class B refer to the CSI-RS that base station is sent, generally precoded pilot, and UE may need first to carry out precoded pilot Selection, or the resource set of precoded pilot are selected, or port group selection, and then the CSI-RS pilot tones based on selection are entered again The quantization feedback of row channel information.Class B are divided into Class B, Kc again>1 and Class B, Kc=1 are in Class B, Kc>1 In, terminal needs to select and feeds back CSI-RS index (CSI-RS resource index, referred to as CRI) selection information, And the corresponding CSI-RS measurements subset of resources of CRI based on selection calculates corresponding RI/PMI/CQI information.Here, there are Kc sets Independent CSI-RS resource, often cover CSI-RS resource one CRI of correspondence, and have Nk independent CSI-RS port Configuration, CSI-RS pattern configurations, pilot frequency sequence configuration etc..In Class B, Kc=1, only a set of CSI-RS Resource, N1≤8, N1 CSI-RS pilot frequency port is typically divided into N1/2 groups, one different wave beam of every group of correspondence passes through The selected port of WS-only code books feedback, and port correspond to the co-phasing information of wave beam.Certainly, Class B, Kc=1 Can also be based on traditional codeword feedback.
For the ease of description, and reduce repeated description, here by transmitting terminal (that is, sending equipment), receiving terminal (that is, is received Equipment) and some concepts, scene and collocation method are introduced.Include at least one transmitting terminal at one and at least one connects In the system of receiving end, antenna/port/array element number of each transmitting terminal configuration is N, and N is just whole more than or equal to 1 here Number.Transmitting terminal transmits data or enhancing down control channel (enhance using Nb PRB pair for its user serviced Physical Downlink Control Channel, referred to as ePDCCH) pilot signal.Each PRB pair is to include Nc son (Orthogonal Frequency Division Multiplexing are referred to as carrier wave and Ns OFDM OFDM)/OFDM (Orthogonal Frequency Division Multiple Access, referred to as OFDMA) The set S of the resource units (Resource Element, referred to as RE, alternatively referred to as resource granularity or resource particle) of symbol, It includes Nc*Ns RE.All RE that each PRB pair is transmitted into data or ePDCCH are divided into K data REG, mark here It is the positive integer more than 1 to be designated as DATA REG wherein K, and each DATA REG groups include several RE in same PRB pair, and And the RE in different DATA REG groups not repeat.K DATA REG carries out layer to antenna end using independent precoding The mapping of mouth.Due to there is the corresponding DATA REG of K difference precoding in same PRB, in order to give this K DATA REG to carry out Data Detection, it is necessary to the DMRS port of the precoding in same PRB is also divided into K DMRS REG group, every group of precoding DMRS port group is respectively mapped to after antenna port be sent to receiving terminal using K independent precoding, and receiving terminal receives M in advance The DMRS of coding, and M port is divided into K DMRS REG, channel estimation is carried out respectively, and channel is carried out respectively per DMRS REG Estimation, and be the data progress Data Detection demodulation on the DATA REG being associated.Here, a DMRS REG and one DATA REG groups are associated, and assume that k-th of DMRS REG and k-th of DATA REG are associated without loss of generality, described pass Connection is that user carries out channel estimation with k-th of DMRS REG, and obtains with the channel of estimation the channel in k-th of DATA REG region Estimation, and Data Detection, demodulation, decoding etc. are carried out to k-th of DATA REG.
In the related art, the DMRS of precoding only is used as demodulated reference signal in same PRB pair.One side Face, if the number of plies for sending data is R, K is individual different to the transmission data or ePDCCH region divisions in same PRB pair DATA REG, each DATA REG need a DMRS REG to be associated, then just need K*R DMRS port altogether.Work as K Than larger or R than it is larger when, required DMRS port number will be than larger, namely DMRS can take substantial amounts of RE, cause Resource utilization declines.
Big, the problem of resource utilization is low for RE occupancies present in correlation technique, not yet proposes effective at present Solution.
The content of the invention
The invention provides the sending method of DMRS a kind of and device, taken with least solving RE present in correlation technique Amount is big, the problem of resource utilization is low.
According to an aspect of the invention, there is provided a kind of demodulated reference signal DMRS sending method, including：From at least DMRS types are selected in two kinds of different DMRS types；Send the DMRS that the DMRS types of selection are indicated.
Alternatively, the DMRS that the DMRS types are indicated includes the DMRS of the first kind and the DMRS of Second Type, wherein, The DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding；And/or, the Equations of The Second Kind The DMRS of type includes the DMRS of non-precoded.
Alternatively, when the DMRS that the DMRS types of selection are indicated is the DMRS of the first kind, the institute of selection is sent Stating the DMRS of DMRS types instruction includes：In the mapping process of transport layer to DMRS port, directly transport layer is mapped one by one Onto the DMRS port.
Alternatively, when the DMRS indicated in the DMRS types of selection is the DMRS of the first kind, the institute of selection is sent Stating the DMRS of DMRS types instruction includes：The DMRS of the first kind is being mapped to the process of antenna port from DMRS port In, using precoding Wp to the DMRS processing, wherein, the Wp is non-unity battle array.
Alternatively, methods described includes at least one of：The data that the Wp is associated with the DMRS of the first kind The precoding Wd that resource granularity group DATA REG are used is identical；The number of the DMRS port of the first kind and the transport layer The number of plies it is equal.
Alternatively, when the DMRS that the DMRS types of selection are indicated is the DMRS of Second Type, the institute of selection is sent Stating the DMRS of DMRS types instruction includes：In the mapping process of transport layer to DMRS port, the transport layer is multiplied by and prelisted After code Wd, re-map in the DMRS port.
Alternatively, when the DMRS that the DMRS types of selection are indicated is the DMRS of Second Type, the institute of selection is sent Stating the DMRS of DMRS types instruction includes：The DMRS of the Second Type is being mapped to the process of antenna port from DMRS port In, mapping one by one is carried out to the DMRS port and handled, or from during the DMRS port is mapped to antenna port, is made With precoding WI to the DMRS processing.
Alternatively, including at least one of：The data money that the precoding WI is associated with the DMRS of the Second Type The precoding Wd that source granularity group DATA REG are used is differed；The number of the DMRS port of the Second Type and the row of the Wd Number is equal；The number of the DMRS port of the Second Type is equal with the number of the antenna port；The WI is unit matrix.
Alternatively, in addition to：Selected DMRS type is sent by high-level signaling and/or physical layer signaling.
Alternatively, DMRS types are selected from least two different DMRS types according at least one following parameter, the The DMRS port number of one type, channel sequence, the DMRS port number of Second Type, data resource granularity group DATA REG numbers Choosing.
Alternatively, when the product of the channel sequence and the DATA REG numbers is less than or equal to the Second Type During DMRS port number, the DMRS of the first kind is selected；And/or, when the channel sequence and the product of the DATA REG numbers More than the Second Type DMRS port number when, select Second Type DMRS.
According to another aspect of the present invention there is provided a kind of DMRS sending methods, including：Send demodulated reference signal DMRS, the DMRS port number is N.
Alternatively, the DMRS port number is indicated according in the following manner：Referred to according to high-level signaling and/or physical layer signaling Show the DMRS port number.
Alternatively, the DMRS port number is indicated according in the following manner：According to PQI information and/or channel condition information Report Type CSI report type indicate the DMRS port number.
Alternatively, the DMRS port number is indicated according at least one in the following manner：It is corresponding by the PQI information The parameter of the number of the DMRS port included in form is indicated；The CSI included by the CSI report type At least one process process indicated, including situations below：The CSI included as the CSI report type Process numbers be 1, and the CSI process feedback classification be Class A when, the number of the DMRS port is institute State CSI process channel condition information measurement pilot tone CSI-RS resource port number；As the CSI report The CSI process numbers that type is included be 1, and the CSI process feedback classification be Class B when, the DMRS The number of port is more than two channel condition informations measurement pilot tone CSI-RS that the CSI process are included The port number of specific CSI-RS resource in resource, the specific CSI-RS resource are to connect in advance The corresponding CSI-RS resource of CSI-RS resource indexes CRI of receipts；Included as the CSI report type When CSI process numbers are more than 1, multiple CSI that the number of the DMRS port is included according to the CSI report type The CSI process specified in process are determined.
Alternatively, multiple CSI process that the number of the DMRS port is included according to the CSI report type In the CSI process specified be determined including at least one of：When the feedback sort of the CSI process specified Not Wei Class A when, the number of the DMRS port for the CSI process specified channel condition information measurement pilot tone CSI-RS resource port number；It is described when the feedback classification of the CSI process specified is Class B The number of DMRS port is more than two channel condition informations measurement pilot tone CSI- that the CSI process specified are included The port number of specific CSI-RS resource in RS resource, the specific CSI-RS resource are pre- The corresponding CSI-RS resource of CSI-RS resource indexes CRI first received.
According to another aspect of the present invention there is provided a kind of demodulated reference signal DMRS sending method, including：At one At least two different types of DMRS of configuration in Physical Resource Block PRB pair；Described at least two are sent on the PRB pair different The DMRS of type.
Alternatively, described at least two different types of DMRS include the DMRS of the first kind and the DMRS of Second Type, Wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding；And/or, described The DMRS of two types includes the DMRS of non-precoded.
Alternatively, the DMRS of the first kind of configuration quantity is M, the DMRS of Second Type number in the PRB pair Measure to be N number of, K1 data resource granularity group DATA REG in the PRB pair is associated with the DMRS port of the first kind, institute The K2 DATA REG stated in PRB pair is associated with the DMRS port of Second Type, and sends for this K2 DATA REG Precoding Wd.
Alternatively, methods described also includes：Indicated by high-level signaling and/or physical layer signaling in the PRB pair simultaneously Two kinds of DMRS is configured with, and sends the M, N, K1, K2 value.
According to another aspect of the present invention there is provided a kind of method that demodulated reference signal DMRS is received, including：Receive choosing The DMRS that the DMRS types selected are indicated, wherein, the DMRS types of the selection are to be selected from least two different DMRS types The DMRS types selected；The number that channel estimation is carried out using the DMRS according to the type of the DMRS and associated to the DMRS Data demodulation is carried out according to resource granularity group DATA REG.
Alternatively, the DMRS of described at least two different DMRS types including first kind DMRS and Second Type DMRS, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding；And/or, The DMRS of the Second Type includes the DMRS of non-precoded.
Alternatively, channel estimation is carried out and to DMRS associations using the DMRS according to the type of the DMRS Data resource granularity group DATA REG, which carry out data demodulation, to be included：When it is determined that the DMRS is the DMRS of the first kind, directly Channel estimation, and the data resource grain associated using channel estimation results to the DMRS are carried out using the DMRS received Degree group DATA REG carry out data demodulation；And/or, when it is determined that the DMRS is the DMRS of Second Type, by the institute received Precoding Wds of the DMRS with being previously received is stated to be multiplied, and the result obtained using being multiplied carries out channel estimation；Estimated using channel The data resource granularity group DATA REG that meter result is associated to the DMRS carry out data demodulation.
Alternatively, in addition to：The DMRS types of selection are determined by high-level signaling and/or physical layer signaling.
Alternatively, the DMRS types of selection are determined according at least one following parameter：The DMRS port of the first kind Number, channel sequence, the DMRS port number of Second Type, the choosing of data resource granularity group DATA REG numbers.
Alternatively, when the product of the channel sequence and the DATA REG numbers is less than or equal to the Second Type During DMRS port number, the DMRS types for determining selection are the first kind；And/or, when the channel sequence and the DATA When the product of REG numbers is more than the DMRS port number of the Second Type, the DMRS types for determining selection are Equations of The Second Kind Type.
According to another aspect of the present invention there is provided a kind of DMRS method of reseptances, including：Receive demodulated reference signal DMRS, the DMRS port number is N.
Alternatively, the DMRS port number is determined according in the following manner：It is true by high-level signaling and/or physical layer signaling The fixed DMRS port number.
Alternatively, the DMRS port number is determined according in the following manner：According to PQI information and/or channel condition information Report Type CSI report type determine the DMRS port number.
Alternatively, the DMRS port number is determined according at least one in the following manner：It is corresponding by the PQI information The parameter of the number of the DMRS port included in form determines the DMRS port number；Pass through the CSI report The CSI processes process that type is included determines at least one the DMRS port number, including situations below：As the CSI The CSI process numbers that report type are included be 1, and the CSI process feedback classification be Class A when, institute State port of the number of DMRS port for the channel condition information measurement pilot tone CSI-RS resource of the CSI process Number；The CSI process numbers included as the CSI report type are 1, and the feedback sort of the CSI process Not Wei Class B when, the number of the DMRS port is more than two channel condition informations that the CSI process are included Measure the port number of the specific CSI-RS resource in pilot tone CSI-RS resource, the specific CSI-RS Resource is the corresponding CSI-RS resource of CSI-RS resource indexes CRI received in advance；As the CSI When the CSI process numbers that report type are included are more than 1, the number of the DMRS port is according to the CSI report The CSI process specified in multiple CSI process that type is included are determined.
Alternatively, multiple CSI process that the number of the DMRS port is included according to the CSI report type In the CSI process specified be determined including at least one of：When the feedback sort of the CSI process specified Not Wei Class A when, the number of the DMRS port for the CSI process specified channel condition information measurement pilot tone CSI-RS resource port number；It is described when the feedback classification of the CSI process specified is Class B The number of DMRS port is more than two channel condition informations measurement pilot tone CSI- that the CSI process specified are included The port number of specific CSI-RS resource in RS resource, the specific CSI-RS resource are pre- The corresponding CSI-RS resource of CSI-RS resource indexes CRI first received.
According to another aspect of the present invention there is provided a kind of DMRS method of reseptances, including：In a Physical Resource Block PRB Internally receive at least two different types of DMRS；Using described at least two different types of DMRS carry out channel estimations and The data resource granularity group DATA REG of DMRS associations different types of to described at least two carry out data demodulation.
Alternatively, described at least two different types of DMRS include the DMRS of the first kind and the DMRS of Second Type, Wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding；And/or, described The DMRS of two types includes the DMRS of non-precoded.
Alternatively, methods described also includes：Receive high-level signaling and/or physical layer signaling；From the high-level signaling and/or Following information is determined in physical layer signaling：The DMRS of the type of DMRS in the PRB pair, the first kind in the PRB pair Quantity M, the DMRS of Second Type quantity N, the data resource associated with the DMRS port of the first kind in the PRB pair The DATA REG associated with the DMRS port of Second Type quantity in granularity group DATA REG quantity K1, the PRB pair K2, and receive precoding Wd.
According to another aspect of the present invention there is provided a kind of demodulated reference signal DMRS dispensing device, including：First is true Cover half block, for selecting DMRS types from least two different DMRS types；First sending module, for sending selection The DMRS that the DMRS types are indicated.
By the present invention, using the selection DMRS types from least two different DMRS types；Send the described of selection The DMRS that DMRS types are indicated.It is achieved thereby that switching DMRS type as the case may be, solve in correlation technique and exist RE occupancies it is big, the problem of resource utilization is low, and then reached reduction RE occupancies improves the effect of resource utilization.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the first DMRS according to embodiments of the present invention transmission；
Fig. 2 is the flow chart of second of DMRS according to embodiments of the present invention transmission；
Fig. 3 is the flow chart of the third DMRS according to embodiments of the present invention transmission；
Fig. 4 is the first DMRS method of reseptance flow chart according to embodiments of the present invention；
Fig. 5 is second of DMRS method of reseptance flow chart according to embodiments of the present invention；
Fig. 6 is the third DMRS method of reseptance flow chart according to embodiments of the present invention；
Fig. 7 is data flow, DMRS port and antenna terminal mapping relation in precoding DMRS according to embodiments of the present invention Figure；
Fig. 8 is data flow, DMRS port and antenna terminal mapping relation in non-precoded DMRS according to embodiments of the present invention Figure；
Fig. 9 is DMRS according to embodiments of the present invention frame structure schematic diagram；
Figure 10 is the schematic diagram that the data RE according to embodiments of the present invention by a PRB is divided into 2 DATA REG；
Figure 11 is the structured flowchart of the first DMRS according to embodiments of the present invention dispensing device；
Figure 12 is the structured flowchart of second of DMRS according to embodiments of the present invention dispensing device；
Figure 13 is the structured flowchart of the third DMRS according to embodiments of the present invention dispensing device；
Figure 14 is the structured flowchart of the first DMRS according to embodiments of the present invention reception device；
Figure 15 is the structured flowchart of second of DMRS according to embodiments of the present invention reception device；
Figure 16 is the structured flowchart of the third DMRS according to embodiments of the present invention reception device.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.
In the following embodiments, transmitting terminal (alternatively referred to as sending equipment) can be related to and/or receiving terminal (alternatively referred to as connects Receiving unit), illustrated below to sending equipment and receiving device：
Transmitting terminal includes but is not limited in downlink：The various radio communications such as macro base station, micro-base station, WAP Equipment.Receiving terminal includes but is not limited to：Data card, mobile phone, notebook computer, PC, tablet personal computer, individual digital are helped The various Wireless Telecom Equipments such as reason, bluetooth.
In up-link, transmitting terminal includes but is not limited to：Data card, mobile phone, notebook computer, PC, flat board The various Wireless Telecom Equipments such as computer, personal digital assistant, bluetooth.Receiving terminal includes but is not limited to：Macro base station, micro-base station, nothing The various Wireless Telecom Equipments such as line access point.
A kind of DMRS sending method is provided in the present embodiment, and Fig. 1 is the first according to embodiments of the present invention The flow chart of DMRS transmission, as shown in figure 1, the flow comprises the following steps：
Step S102, selects DMRS types from least two different DMRS types；
Step S104, sends the DMRS that the above-mentioned DMRS types of selection are indicated.
Wherein, perform aforesaid operations can send equipment.
By above-mentioned steps, DMRS type can be selected as the case may be by sending equipment, i.e. can be according to specific feelings Condition switches DMRS type, solves RE occupancies present in correlation technique greatly, the problem of resource utilization is low, and then reaches Reduction RE occupancies, improve the effect of resource utilization.
In an optional embodiment, the DMRS that above-mentioned DMRS types are indicated includes the DMRS and Equations of The Second Kind of the first kind The DMRS of type, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding；With/ Or, the DMRS of the Second Type includes the DMRS (that is, Non-precoded DMRS) of non-precoded.
In an optional embodiment, when the DMRS that the DMRS types of selection are indicated is the DMRS of the first kind, hair The DMRS that the DMRS types selected of sending to be elected are indicated includes：, directly will transmission in the mapping process of transport layer to DMRS port Layer is mapped in DMRS port one by one, i.e. when transport layer is mapped in DMRS port, is direct mapping, related volume is not done Code processing.
In an optional embodiment, when the DMRS that the DMRS types of selection are indicated is the DMRS of the first kind, hair The DMRS that the DMRS types selected of sending to be elected are indicated includes：The DMRS of the above-mentioned first kind is being mapped to antenna from DMRS port During port, using precoding Wp to DMRS processing, wherein, the Wp is non-unity battle array, i.e. carrying out DMRS port Into the mapping process of antenna port, coded treatment has been carried out to the signal in DMRS port, and (precoding processing can be multiplied With precoding Wp).In the present embodiment, before DMRS is sent by antenna port, coded treatment can be carried out to DMRS, from And ensure that DMRS Successful transmissions.
In an optional embodiment, the above method includes at least one of：Above-mentioned Wp and the first kind DMRS The precoding Wd that the data resource granularity group DATA REG of association are used is identical；The number of the DMRS port of the above-mentioned first kind with The number of plies of above-mentioned transport layer is equal.
In an optional embodiment, as the DMRS that the DMRS that the above-mentioned DMRS types of selection are indicated is Second Type When, sending the DMRS of the DMRS types instruction of selection includes：In the mapping process of transport layer to DMRS port, transport layer is multiplied After precoding Wd, re-map in DMRS port.
In an optional embodiment, as the DMRS that the DMRS that the above-mentioned DMRS types of selection are indicated is Second Type When, sending the DMRS of the DMRS types instruction of selection includes：The DMRS of Second Type is being mapped to antenna end from DMRS port During mouthful, mapping one by one is carried out to DMRS port and handled, or from during DMRS port is mapped to antenna port, is made With precoding WI to DMRS processing.In the present embodiment, when DMRS type is Second Type, it is possible to use unit matrix To DMRS processing, so as to ensure that DMRS, when being mapped on antenna port, maps one by one.In the present embodiment, The value for the precoding Wd that the data resource granularity group DATA REG that above-mentioned Wd is associated with DMRS are used can be consistent.
In an optional embodiment, the above method includes at least one of：Above-mentioned precoding WI and Second Type The precoding Wd that use of data resource granularity group DATA REG of DMRS associations differ；The DMRS port of above-mentioned Second Type Number it is equal with Wd line number；The number of the DMRS port of above-mentioned Second Type is equal with the number of antenna port；Above-mentioned WI For unit matrix.
In an optional embodiment, the above method also includes：Institute is sent by high-level signaling and/or physical layer signaling The DMRS of selection type.In the present embodiment, after transmission equipment determines DMRS type, the class of determination can be sent Type, so that receiving device carries out channel estimation and data demodulation process according to specific DMRS type.
, can be according at least one following parameter from least two different DMRS types in an optional embodiment Middle selection DMRS types, the DMRS port number of the first kind, channel sequence, the DMRS port number of Second Type, data resource Granularity group DATA REG numbers are selected.
In an optional embodiment, when the product of above-mentioned channel sequence and DATA REG numbers is less than or equal to Equations of The Second Kind During the DMRS port number of type, the DMRS of the first kind is selected；And/or, when above-mentioned channel sequence and the product of DATA REG numbers More than Second Type DMRS port number when, select Second Type DMRS.Wherein, the channel sequence in the present embodiment include but It is not limited to：Data transfer layer number, data transmission stream number, data flow number, data Layer number, channel Rank, RI, order etc. are general Read.
A kind of DMRS sending methods are additionally provided in the present embodiment, and Fig. 2 is according to embodiments of the present invention second The flow chart that DMRS is sent, as shown in Fig. 2 the flow comprises the following steps：
Step S202, sends demodulated reference signal DMRS, and the DMRS port number is N.
Wherein, perform aforesaid operations can send equipment.
Wherein, above-mentioned DMRS type can be the first kind or Second Type.
In an optional embodiment, DMRS port number can be indicated according in the following manner：According to high-level signaling and/ Or physical layer signaling indicates DMRS port number.
In an optional embodiment, DMRS port number can be indicated according in the following manner：According to PQI (PDSCH RE mapping and Quasi co-location Indicator) information or channel status information reports Type C SI Report type indicate DMRS port number.It should be noted that the signaling of above-mentioned type is only several preferred implementations Example, can also carry out the configuration of DMRS port number using other kinds of signaling.Below to how to carry out the number of DMRS port Notice illustrate：
In an optional embodiment, above-mentioned DMRS port number is indicated according at least one in the following manner：Pass through PQI The parameter of the number of the DMRS port included in the corresponding form of information is indicated；Included by CSI report type At least one CSI processes process indicated, including situations below：The CSI included as CSI report type Process numbers are 1, and CSI process feedback classification, when being Class A, the number of DMRS port is CSI process Channel condition information measurement pilot tone CSI-RS resource port number；The CSI included as CSI report type Process numbers are 1, and CSI process feedback classification, when being Class B, the number of DMRS port is CSI process Comprising more than two channel condition informations measurement pilot tone CSI-RS resource in specific CSI-RS resource Port number, the specific CSI-RS resource are that the CSI-RS resource indexes CRI that receives in advance is corresponding CSI-RS resource；When the CSI process numbers that CSI report type are included are more than 1, the number of DMRS port The CSI process specified in the multiple CSI process included according to above-mentioned CSI report type are determined.
In an optional embodiment, the number of above-mentioned DMRS port according to CSI report type include it is multiple The CSI process specified in CSI process are determined including at least one of：As specified CSI process Feedback classification when being Class A, the measurement of channel condition information that the number of above-mentioned DMRS port is the CSI process specified Pilot tone CSI-RS resource port number；When specified CSI process feedback classification is Class B, DMRS ends The number of mouth is more than two channel condition informations measurement pilot tone CSI-RS that the CSI process specified are included The port number of specific CSI-RS resource in resource, above-mentioned specific CSI-RS resource are to connect in advance The corresponding CSI-RS resource of CSI-RS resource indexes CRI of receipts.
A kind of demodulated reference signal DMRS sending method is additionally provided in the present embodiment, and Fig. 3 is according to of the invention real The flow chart of the third DMRS of example transmission is applied, as shown in figure 3, the flow comprises the following steps：
Step S302, configures at least two different types of DMRS in a Physical Resource Block PRB pair；
Step S304, sends above-mentioned at least two different types of DMRS on above-mentioned PRB pair.
Wherein, perform aforesaid operations can send equipment.
By above-mentioned steps, polytype DMRS can be sent simultaneously as the case may be by sending equipment, solve phase RE occupancies present in the technology of pass are big, the problem of resource utilization is low, and then reached reduction RE occupancies, improve resource profit With the effect of rate.
In an optional embodiment, the above-mentioned two distinct types of DMRS of instruction including first kind DMRS and the The DMRS of two types, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding； And/or, the DMRS of the Second Type includes the DMRS (that is, Non-precoded DMRS) of non-precoded.
In an optional embodiment, the DMRS of the first kind of configuration quantity is M, second in above-mentioned PRB pair The DMRS of type quantity is N number of, the DMRS of K1 data resource granularity group DATA REG and the first kind in above-mentioned PRB pair Port is associated, and K2 DATA REG in above-mentioned PRB pair is associated with the DMRS port of Second Type.
In an optional embodiment, the above method also includes：By high-level signaling, (high-level signaling can be high-rise RRC signaling, the high-rise RRC signaling included from the first above-mentioned display signaling can be identical signaling or different Signaling) and/or physical layer signaling (physical layer signaling included with the first above-mentioned display signaling can be identical signaling, Can be different signalings) at least the above PRB pair while be configured with two kinds of DMRS, and send above-mentioned M, N, K1, K2 value.
A kind of method that DMRS is received is additionally provided in the present embodiment, and Fig. 4 is the first according to embodiments of the present invention DMRS method of reseptance flow charts, as shown in figure 4, the flow comprises the following steps：
Step S402, receives the DMRS that the DMRS types of selection are indicated, wherein, the DMRS types of the selection are from least two Plant the DMRS types selected in different DMRS types；
Step S404, carries out channel estimation using DMRS according to above-mentioned DMRS type and the data that DMRS is associated is provided Source granularity group DATA REG carry out data demodulation.
Wherein, perform aforesaid operations can be receiving device.
By above-mentioned steps, the type for the DMRS that receiving device is received is to send the class that equipment is determined as the case may be Type, i.e. send the operation that equipment has carried out the type for switching DMRS as the case may be, exist so as to solve in correlation technique RE occupancies it is big, the problem of resource utilization is low, and then reached reduction RE occupancies improves the effect of resource utilization.
In an optional embodiment, the DMRS of above-mentioned at least two different DMRS types includes the first kind DMRS and Second Type DMRS, wherein, the DMRS of the first kind includes the DMRS or beam forming of precoding Beamformed DMRS；And/or, the DMRS of the Second Type includes DMRS (that is, the Non-precoded of non-precoded DMRS)。
In an optional embodiment, channel estimation is carried out and to DMRS using DMRS according to above-mentioned DMRS type The data resource granularity group DATA REG of association, which carry out data demodulation, to be included：When it is determined that DMRS is the DMRS of the first kind, directly Connect and carry out channel estimation, and the data resource granularity associated using channel estimation results to DMRS using the above-mentioned DMRS received Group DATA REG carry out data demodulation；And/or, when it is determined that above-mentioned DMRS is the DMRS of Second Type, by the DMRS received It is multiplied with what is be previously received from the precoding Wd for sending equipment, and the result obtained using being multiplied carries out channel estimation；Profit The data resource granularity group DATA REG associated with channel estimation results to DMRS carry out data demodulation.
In an optional embodiment, the above method also includes：Choosing is determined by high-level signaling and/or physical layer signaling The above-mentioned DMRS types selected.
In an optional embodiment, the above-mentioned DMRS types of selection are determined according at least one following parameter：First The DMRS port number of type, channel sequence, the DMRS port number of Second Type, data resource granularity group DATA REG numbers Choosing.Wherein, the channel sequence in the present embodiment includes but is not limited to：Data transfer layer number, data transmission stream number, data flow The concept such as number, data Layer number, channel Rank, RI, order.
In an optional embodiment, when the product of above-mentioned channel sequence and DATA REG numbers is less than or equal to Equations of The Second Kind During the DMRS port number of type, the DMRS types for determining selection are the first kind；And/or, when channel sequence and DATA REG numbers Product be more than Second Type DMRS port number when, determine selection DMRS types be Second Type.
A kind of DMRS method of reseptances are additionally provided in the present embodiment, and Fig. 5 is according to embodiments of the present invention second DMRS method of reseptance flow charts, as shown in figure 5, the flow comprises the following steps：
Step S502, receives demodulated reference signal DMRS, and the DMRS port number is N.
Wherein, perform aforesaid operations can be receiving device.Above-mentioned DMRS type can be the first kind, also may be used To be Second Type.
In an optional embodiment, DMRS port number can be determined according in the following manner：By high-level signaling and/ Or physical layer signaling determines the DMRS port number.
In an optional embodiment, DMRS port number can be determined according in the following manner：According to PQI information or letter Channel state information Report Type CSI report type determine the DMRS port number.
In an optional embodiment, DMRS port number is determined according at least one in the following manner：Pass through PQI information The parameter of the number of the DMRS port included in corresponding form determines the number of above-mentioned DMRS port；Pass through CSI report The CSI processes process that type is included determines at least one the number of above-mentioned DMRS port, including situations below：Work as CSI The CSI process numbers that report type are included be 1, and CSI process feedback classification be Class A when, DMRS ends The number of mouth measures pilot tone CSI-RS resource port number for CSI process channel condition information；Work as CSI The CSI process numbers that report type are included be 1, and CSI process feedback classification be Class B when, DMRS ends In more than two channel condition informations measurement pilot tone CSI-RS resource that the number of mouth includes for CSI process Specific CSI-RS resource port number, the specific CSI-RS resource are the CSI-RS received in advance The corresponding CSI-RS resource of resource indexes CRI；When the CSI process numbers that CSI report type are included are big When 1, the CSI specified in multiple CSI process that the number of DMRS port is included according to CSI report type Process is determined.
In an optional embodiment, the number of above-mentioned DMRS port according to CSI report type include it is multiple The CSI process specified in CSI process are determined including at least one of：As specified CSI process Feedback classification when being Class A, channel condition information that the number of DMRS port is the CSI process specified measurement pilot tone CSI-RS resource port number；When specified CSI process feedback classification is Class B, DMRS port Number is that more than two channel condition informations that the CSI process specified are included are measured in pilot tone CSI-RS resource Specific CSI-RS resource port number, above-mentioned specific CSI-RS resource are the CSI-RS that receives in advance The corresponding CSI-RS resource of resource indexes CRI.
In an optional embodiment, equipment is sent when sending DMRS, polytype DMRS can be sent simultaneously, For example, sending equipment DMRS of the Configuration Type 1 and DMRS of type 2 in a transmission resource block.For receiving device, When receiving device received in same transmission resource block Class1 DMRS and type 2 DMRS after, class can be directed to respectively The DMRS of the type 1 and DMRS of type 2 is that the DATA REG associated with different classes of DMRS carry out channel estimation, and detection is conciliate Adjust.
Additionally provide a kind of DMRS method of reseptances in the present embodiment, Fig. 6 is according to embodiments of the present invention the third DMRS method of reseptance flow charts, as shown in fig. 6, the flow comprises the following steps：
Step S602, receives at least two different types of DMRS in a Physical Resource Block PRB pair；
Step S604, channel estimation is carried out and to above-mentioned at least two using the two distinct types of DMRS of above-mentioned instruction The data resource granularity group DATA REG of different types of DMRS associations carry out data demodulation.
Wherein, perform aforesaid operations can be receiving device.
By above-mentioned steps, the type for the DMRS that receiving device is received can send equipment and determine as the case may be Type, so that solve RE occupancies present in correlation technique greatly, the problem of resource utilization is low, and then reached reduction RE Occupancy, improves the effect of resource utilization.
In an optional embodiment, above-mentioned at least two different types of DMRS including first kind DMRS and the The DMRS of two types, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding； And/or, the DMRS of the Second Type includes the DMRS (that is, Non-precoded DMRS) of non-precoded.
In an optional embodiment, the above method also includes：Receive high-level signaling and/or physical layer signaling；From this (high-level signaling can be high-rise RRC signaling to high-level signaling, and the high-rise RRC signaling included with the first above-mentioned display signaling can To be identical signaling or different signalings) and/or physical layer signaling (include with the first above-mentioned display signaling Physical layer signaling can be identical signaling or different signalings) the middle following information of determination：DMRS's in PRB pair With the first kind in the DMRS of the first kind in type, PRB pair quantity M, the DMRS of Second Type quantity N, PRB pair DMRS port phase in the associated data resource granularity group DATA REG of DMRS port quantity K1, PRB pair with Second Type The DATA REG of association quantity K2.
With reference to specific embodiment, the present invention will be described：
The description in embodiment is understood for convenience, from transmitting terminal (that is, above-mentioned transmission equipment) and is connect respectively again herein The present invention will be described for the angle of receiving end (that is, above-mentioned receiving device), in following embodiments, using DMRS type as The handling process to precoding DMRS and non-precoded DMRS is introduced exemplified by precoding DMRS and/or non-precoded DMRS.
In transmitting terminal：
For the DMRS of precoding, as shown in fig. 7, streams of code words is mapped to R layer data streams after first passing around layer mapping processing, Then R DMRS is inserted into this R layer data stream respectively, each layer data re-maps antenna end after carrying out precoding processing afterwards Mouthful.For the DMRS of non-precoded, as shown in figure 8, streams of code words is mapped to R layer data streams after first passing around layer mapping processing, so Precoding processing is carried out to this R layer datas stream afterwards, the data after precoding processing are inserted into the DMRS (DMRS with precoding Difference, the processing of DMRS not Jing Guo precoding here), finally these data are mapped on antenna port again.
In receiving terminal：
For precoding DMRS, passed through by the channel estimation carried out based on precoding DMRS can directly react transport layer The channel gone through, including precoding information, therefore it is used directly for the coherent demodulation of different layers, that is to say, that transmitting terminal is not required to The use information of precoding is notified that, to receiving terminal, receiving terminal can also complete the demodulation of data.And for non-precoded DMRS, Now, receiving terminal not can know which kind of precoding transmitting terminal has used from the signal in the DMRS port received, therefore Carried out using non-precoded DMRS after channel estimation, in addition it is also necessary to which used precoding is believed when transmitting terminal is sent DMRS by transmitting terminal Breath notice recycles the result and precoding information of channel estimation just to enter to data symbol to receiving terminal, afterwards receiving terminal Row demodulation.
Foregoing description is illustrated with reference to specific embodiment：
Embodiment 1
In the present embodiment, DMRS type can be configured/determined according to explicit signaling.
For transmitting terminal：
Type of the transmitting terminal by explicit signaling directly to DMRS is configured.
When the DMRS of configuration type is the DMRS of precoding, the RE in each PRB pair is divided into K DATA by transmitting terminal REG, G1, G2 ..., GK, the RE included in each group in M1, M2 ..., MK RE, and same PRB pair belong to and only belonged to In a DATA REG group, while M DMRS port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK.Hair Sending end is used independently precoding Ci and carries out precoding to k-th of DMRS port group Sk respectively, and transmitting terminal is to being associated K-th of DATA REG also using Ci carry out precoding.Then, transmitting terminal is just the DMRS port and K DATA of K precoding REG is mapped to antenna port to launch.Meanwhile, transmitting terminal is transferred to the pre-coding matrix that user Ci is N*R, wherein i =1,2 ..., K；R is the number of plies for sending data.
When the DMRS of configuration type is the DMRS of non-precoded, the RE in each PRB pair is divided into K by transmitting terminal DATAREG, G1, G2 ..., GK, include in each group a RE in M1, M2 ..., MK RE, and same PRB pair belong to and A DATA REG group is only belonged to, while M DMRS port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK.For k-th of DMRS port and k-th of DATA REG being associated, transmitting terminal directly reflects the signal in DMRS port It is mapped on antenna port, but is re-mapped after being multiplied to k-th of DATA REG with pre-coding matrix Wd on antenna port.
For receiving terminal：
Receiving terminal receives explicit signaling, the type for the DMRS that can determine to receive from signaling instruction content.Receiving terminal is by M Individual precoding DMRS port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK, and simultaneously the RE in PRB pair points Into K DATA REG, G1, G2 ..., GK, include a RE in M1, M2 ..., MK RE, and same PRB pair in each group Belong to and only belong to a DATA REG group.
When receiving terminal receives the DMRS of precoding, receiving terminal directly can be believed using the signal in DMRS port Road is estimated, then carries out data demodulation to the DATA REG being associated using the result of channel estimation.
When receiving terminal receives the DMRS of non-precoded, receiving terminal can also receive K pre-coding matrix Ck and (correspond to Above-mentioned Wd), wherein k=1,2 ..., K.Receiving terminal is by the pre-coding matrix Ck received and the DMRS ends of k-th of non-precoded Signal multiplication in mouth group, carries out channel estimation further according to the signal obtained after multiplication, then utilizes the result pair of channel estimation K-th of DATA REG being associated carries out data demodulation.
Embodiment 2
In the present embodiment, DMRS type can be according to implicit signal deployment/determination, i.e. can be sent according to data Number K configurations/determination of the number of plies or channel sequence R, non-precoded DMRS port number N and division DMRS port group.
For transmitting terminal：
The number of plies or channel sequence R that transmitting terminal is sent according to data, non-precoded DMRS antenna port number N, and one The number K of DMRS port group in PRB pair, when meeting constraints K*R>During N, transmitting terminal configures the DMRS of non-precoded.
RE in each PRB pair is divided into K DATA REG, G1, G2 ..., GK, each group by transmitting terminal includes M1, M2 ..., MK RE, an and RE in same PRB pair belongs to and only belong to a DATA REG group, while by M DMRS Port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK.For k-th of DMRS port and the kth being associated Signal in DMRS port is directly mapped on antenna port by individual DATA REG, transmitting terminal, but will to k-th of DATA REG Re-mapped after being multiplied with pre-coding matrix Wd on antenna port.
For receiving terminal：
The number of plies or channel sequence R that receiving terminal is sent according to data, non-precoded DMRS port number N, and a PRB pair In DMRS port group number K, when meeting constraints K*R>During N, receiving terminal determines that the DMRS types received are non-pre- The DMRS of coding.
M precoding DMRS port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK by receiving terminal, and together When the RE in PRB pair be divided into K DATA REG, G1, G2 ..., GK, each group include M1, M2 ..., MK RE, and same A RE in individual PRB pair belongs to and only belongs to a DATA REG group.Receiving terminal can also receive K pre-coding matrix Ck, Wherein k=1,2 ..., K.Receiving terminal is using on the pre-coding matrix Ck and the DMRS port group of k-th of non-precoded received Signal carries out channel estimation, then carries out data demodulation to k-th of DATA REG being associated using the result of channel estimation.
Below with LTE/LTE A frame structure, illustrate influence of the value of all kinds of parameters to DMRS types, such as, In only 12 RE DMRS frame structures, such as Fig. 9, M values are that 2, port 7 and port8 passes through orthogonal covering codes The mode of (orthogonal cover codes, referred to as OCC) shares 12 DMRS RE, and the data number of plies of transmission is 2, DMRS is also divided into two groups i.e. K=2, antenna port number N=2, and the RE in PRB pair is also divided into 2 groups, such as Figure 10, DATA REG1 and DATA REG2, and port 7 is associated with DATA REG1, port 8 is associated with DATA REG2.According to restriction relation K*R= 2*2>N, then in transmitting terminal, the DMRS on port 7 and port 8 needs not move through precoding and maps directly to antenna Port is launched, and DATA REG1 and DATA REG2 re-map antenna after carrying out precoding with pre-coding matrix C1 and C2 respectively Launch port.Receiving terminal is according to restriction relation K*R=2*2>N determines that the DMRS received is the DMRS, Ran Houjie of non-precoded Receiving end receives 2 port port 7 and port 8 DMRS and 2 pre-coding matrix C1 and C2.Receiving terminal is with port7 Signal and pre-coding matrix C1 carry out channel estimation, and do data demodulation to DATA REG1 using the channel of estimation.Receiving terminal is used Signal and pre-coding matrix C2 on port8 carry out channel estimation, and do data solution to DATA REG2 using the channel of estimation Adjust.Wherein C1 and C2 are N*2 pre-coding matrixes.
Embodiment 3
In the present embodiment, DMRS type can be according to implicit signal deployment/determination, you can with the layer sent according to data Number K configurations/determination of number or channel sequence R, precoding DMRS port number M and division DMRS port group.
For transmitting terminal：
The number of plies or channel sequence R that transmitting terminal is sent according to data, precoding DMRS antenna port number M, and a PRB To the number K of inner DMRS port group, when meeting constraints K*R≤M, the DMRS of transmitting terminal allocating pre-coding.
RE in each PRB pair is divided into K DATA REG, G1, G2 ..., GK, each group by transmitting terminal includes M1, M2 ..., MK RE, an and RE in same PRB pair belongs to and only belong to a DATA REG group, while by M DMRS Port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK.Transmitting terminal is to k-th DMRS port and is associated K-th of DATA REG is multiplied by identical pre-coding matrix Wd, then the signal obtained after multiplication is mapped into antenna port transmission.
For receiving terminal：
The number of plies or channel sequence R that receiving terminal is sent according to data, precoding DMRS port number M, and in a PRB pair DMRS port group number K, when meeting constraints K*R≤M, receiving terminal determines that the DMRS types that receive are precoding DMRS.
M precoding DMRS port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK by receiving terminal, and together When the RE in PRB pair be divided into K DATA REG, G1, G2 ..., GK, each group include M1, M2 ..., MK RE, and same A RE in individual PRB pair belongs to and only belongs to a DATA REG group.Receiving terminal can be directly to the letter in K DMRS port Number channel estimation is done respectively, data demodulation then is carried out to k-th of DATA REG being associated using the result of channel estimation.
Below with LTE/LTE A frame structure, illustrate influence of the value of all kinds of parameters to DMRS types, such as, In only 12 RE DMRS frame structures, such as Fig. 9, M values are that 2, port 7 and port8 passes through orthogonal covering codes The mode of (orthogonal cover codes, referred to as OCC) shares 12 DMRS RE, and the data number of plies of transmission is 1, DMRS is divided into two groups i.e. K=2, and the RE in PRB pair is also divided into 2 groups, such as Figure 10, DATA REG1 and DATA REG2, and makes Port 7 is associated with DATA REG1, and port 8 is associated with DATA REG2.According to restriction relation K*R=2*1≤M, then in hair In sending end, port 7 and DATA REG1 are multiplied by after identical pre-coding matrix C1, and the signal that multiplication is obtained is mapped to antenna Port is launched, and port 8 and DATA REG2 are multiplied by after identical pre-coding matrix C2, and the signal that multiplication is obtained is mapped to day Line end mouthful is sent.Receiving terminal determines that the DMRS received is the DMRS of precoding according to restriction relation K*R=2*1≤M.Receiving terminal Channel estimation is carried out with the signal on port7, and data demodulation is done to DATA REG1 using the channel of estimation.Receiving terminal is used Signal on port8 carries out channel estimation, and does data demodulation to DATA REG2 using the channel of estimation.
Embodiment 4
In the present embodiment, the DMRS port number N of non-precoded is sent/determined by the PQI information in DCI signalings：
In lte-a system, there is PDSCH RE mapping and Quasi co- in DCI format 2D Location Indicator information fields, i.e. PQI information, may be used to indicate PDSCH resource mapping method and QCL parameters Configuration, table 1 show the PQI information tables in lte-a system.
Table 1
By increasing the configured information in PQI information tables newly, it is possible to achieve indicate the mesh of DMRS port type by PQI information , table 2 below show the PQI information tables of newly-increased DMRS configured informations, increases DMRS config information in PQI information tables, its The DMRS port number of type and respective type of the middle DMRS config packets containing DMRS.More specifically, there may be 3 kinds DMRS config, are the DMRS of non-precoded when DMRS config value is 0；When DMRS config value is 1, it is The DMRS of precoding；It is on same RB while there is the DMRS and non-precoded of precoding when DMRS config value is 2 DMRS.For receiving terminal, receiving terminal receives DCI format 2D signalings, so as to get PQI information, you can pass through The mode tabled look-up determines the type and port number N for the DMRS being currently received.
Table 2
Embodiment 5
In the present embodiment, the DMRS port number N of non-precoded is sent/determined by feeding back classification：
For transmitting terminal：
Situation 1, transmitting terminal send the DMRS of non-precoded, and feedback classification is Class A, and transmitting terminal is configured with 4 CSI process.Transmitting terminal indicates the CSI process of configuration number by signaling, and indicate the non-precoded of transmission DMRS port number N and the 3rd CSI process bindings.
Situation 2, transmitting terminal send the DMRS of non-precoded, and feedback classification is Class B, and transmitting terminal is configured with 1 CSI process, and this CSI process's and includes 2 sets of CSI-RS resource.Transmitting terminal indicates to send out by signaling CSI process number is sent, and indicates that the DMRS of non-precoded port number N and the 1st set of CSI-RS resource are tied up It is fixed.
Situation 3, transmitting terminal send the DMRS of non-precoded, and feedback classification is Class B, and transmitting terminal is configured with 2 CSI process, wherein the 1st CSI process includes 2 sets of CSI-RS resource, the 2nd CSI process includes 3 Cover CSI-RS resource.Transmitting terminal indicates the DMRS of non-precoded port number N and the 2nd CSI by CRI Process the 3rd set of CSI-RS resource bindings.
For receiving terminal：
Situation 1, receiving terminal receive the DMRS of non-precoded, and receiving terminal determines feedback classification for Class A, and receiving terminal Reception signaling determines currently to have 4 CSI process and the DMRS port number N of non-precoded and the 3rd CSI process is tied up It is fixed.Receiving terminal determines N value by the port number of Class A CSI-RS resource in the 3rd CSI process.
Situation 2, receiving terminal receive the DMRS of non-precoded, and receiving terminal determines feedback classification for Class B, and receiving terminal Receive signaling and determine currently there is 1 CSI process, and know that the CSI process there are 2 sets of CSI-RS from signaling Resource and DMRS port number N and the 1st set of CSI-RS resource of non-precoded bindings.Receiving terminal passes through the 1st CSI CSI-RS resource port number determines N value in process set CSI-RS resource.
Situation 3, receiving terminal receive the DMRS of non-precoded, and receiving terminal determines feedback classification for Class B, and receiving terminal Receive signaling and determine currently there are 2 CSI process.Receiving terminal from CRI instruction in determine non-precoded DMRS port number N with The 3rd set of CSI-RS resource bindings on 2nd CSI process.Receiving terminal passes through on the 2nd CSI process 3 sets of CSI-RS resource port number determines N value.
Embodiment 6
In the present embodiment, transmitting terminal configures in same RB Beamformed DMRS (that is, the first kind simultaneously DMRS) and Non-precoded DMRS (that is, the DMRS of Second Type), receiving terminal receives Beamformed DMRS and Non- Precoded DMRS and its corresponding DATA REG are estimated and demodulated.
For transmitting terminal：
RE in each PRB pair is divided into K DATA REG, G1, G2 ..., GK, each group by transmitting terminal includes M1, M2 ..., MK RE, an and RE in same PRB pair belongs to and only belong to a DATA REG group, while by M DMRS Port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK.This K DMRS port group is divided into two by transmitting terminal Set A and B.Set A includes n port set, respectively S1, S2 ..., Sn, and the DMRS of this n port set Beamformed DMRS.Set B includes K-n port set, respectively Sn+1, Sn+2 ..., SK, and this K-n port set DMRS be all Non-precoded DMRS.Transmitting terminal, which sends the DMRS signaled in receiving terminal set A, simultaneously is DMRS in Beamformed DMRS, set B is Non-precoded DMRS.To j-th of DMRS port group Sj in set A (j=1,2 ..., n), Sj and Gj are multiplied by identical pre-coding matrix Wj (j=by transmitting terminal with the DATA REG Gj being associated 1,2 ..., n) (correspond to above-mentioned Wd), the signal obtained after multiplication is re-mapped into antenna port transmitting, wherein n prelist (j=1,2 ..., be able to can also n) be differed code matrix W j with identical.Close to j-th of DMRS port Sj in set B and therewith Sj is mapped directly to antenna port and launched by the DATA REG Gj (j=1,2 ..., K-n) of connection, transmitting terminal, but Gj is needed Antenna port transmitting is re-mapped after it is multiplied with pre-coding matrix Cj, transmitting terminal and is used each DATA REG Pre-coding matrix Cj (j=1,2 ..., K-n) be transferred to receiving terminal, wherein Cj is N*R pre-coding matrix, and R is data transfer The number of plies.
For receiving terminal：
RE in each PRB pair is divided into K DATA REG, G1, G2 ..., GK, each group by receiving terminal includes M1, M2 ..., MK RE, an and RE in same PRB pair belongs to and only belong to a DATA REG group, while by M DMRS Port P1, P2 ..., PM are divided into K DMRS port group S1, S2 ..., SK.Receiving terminal receives signaling, determines port set S1, DMRS in S2 ..., Sn is Beamformed DMRS, and the DMRS in port set Sn+1, Sn+2 ..., SK is Non- precoded DMRS.For n DMRS port group in set A, what the use that receiving terminal can directly independently was received Signal in DMRS port carries out channel estimation, and is respectively that corresponding DATA REG carry out data inspection with the channel of estimation Survey.For j-th of DMRS port group Sj in set B and the DATA Gj being associated, receiving terminal, which needs to combine to utilize, to be connect Signal on the corresponding precoding matrix information Cj received and the DMRS port received carries out channel estimation, recycles The result of channel estimation carries out data demodulation, wherein j=1,2 ..., K-n to DATA Gj.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Understood based on such, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are to cause a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each of the invention embodiment.
A kind of demodulated reference signal DMRS dispensing device is additionally provided in the present embodiment, and the device is above-mentioned for realizing Embodiment and preferred embodiment, had carried out repeating no more for explanation.As used below, term " module " can be real The combination of the software and/or hardware of existing predetermined function.Although the device described by following examples is preferably realized with software, But hardware, or the realization of the combination of software and hardware is also that may and be contemplated.
Figure 11 is the structured flowchart of the first DMRS according to embodiments of the present invention dispensing device, as shown in figure 11, should Device includes the first determining module 112 and the first sending module 114, and the device is illustrated below：
First determining module 112, for selecting DMRS types from least two different DMRS types；First sends mould Block 114, is connected to above-mentioned first determining module 112, for sending the DMRS that the above-mentioned DMRS types of selection are indicated.
In an optional embodiment, above-mentioned at least two different DMRS types include the first kind and Equations of The Second Kind Type, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding；And/or, this The DMRS of two types includes the DMRS (that is, Non-precoded DMRS) of non-precoded.
In an optional embodiment, when the DMRS that the DMRS types of selection are indicated is the DMRS of the first kind, hair The DMRS that the DMRS types selected of sending to be elected are indicated：In the mapping process of transport layer to DMRS port, directly by transport layer one One is mapped in DMRS port, i.e. when transport layer is mapped in DMRS port, is direct mapping, does not do at correlative coding Reason.
In an optional embodiment, when the DMRS that the DMRS types of selection are indicated is the DMRS of the first kind, hair The DMRS that the DMRS types selected of sending to be elected are indicated：The DMRS of the above-mentioned first kind is being mapped to antenna port from DMRS port During, using precoding Wp to DMRS processing, wherein, the Wp is non-unity battle array, i.e. carrying out DMRS port to day In the mapping process of line end mouthful, the signal in DMRS port has been carried out coded treatment (precoding processing can be multiplied by it is pre- Encode Wp).In the present embodiment, before DMRS is sent by antenna port, coded treatment can be carried out to DMRS, so as to protect DMRS Successful transmissions are demonstrate,proved.
In an optional embodiment, the data resource granularity group DATA that above-mentioned Wp is associated with the DMRS of the first kind The precoding Wd that REG is used is identical；And/or, the form of the DMRS port of the above-mentioned first kind and the number of plies of above-mentioned transport layer It is equal.
In an optional embodiment, as the DMRS that the DMRS that the above-mentioned DMRS types of selection are indicated is Second Type When, send the DMRS that the DMRS types of selection are indicated：In the mapping process of transport layer to DMRS port, transport layer is multiplied by pre- Encode after Wd, re-map in DMRS port.
In an optional embodiment, as the DMRS that the DMRS that the above-mentioned DMRS types of selection are indicated is Second Type When, send the DMRS that the DMRS types of selection are indicated：The DMRS of Second Type is being mapped to antenna port from DMRS port During, mapping one by one is carried out to DMRS port and handled, or from during DMRS port is mapped to antenna port, using pre- WI is encoded to DMRS processing.In the present embodiment, when DMRS type is Second Type, it is possible to use unit matrix pair DMRS processing, so as to ensure that DMRS, when being mapped on antenna port, maps one by one.In the present embodiment, on The value for the precoding Wd that the data resource granularity group DATA REG that the Wd stated is associated with DMRS are used can be consistent.
In an optional embodiment, the data resource granularity group that above-mentioned precoding WI is associated with the DMRS of Second Type The precoding Wd that DATA REG are used is differed；And/or, the DMRS of above-mentioned Second Type port number and Wd line number phase Deng；And/or, the number of the DMRS port of above-mentioned Second Type is equal with the number of antenna port；And/or, above-mentioned WI is unit Matrix.
In an optional embodiment, above-mentioned first sending module 114 can also send above-mentioned in the following way DMRS type：Selected DMRS type is sent by high-level signaling and/or physical layer signaling.In the present embodiment, when Send equipment to determine after DMRS type, the type of determination can be sent, so that receiving above-mentioned DMTS receiving device Channel estimation and data demodulation process can be carried out according to specific DMRS type.
, can be according at least one following parameter from least two different DMRS types in an optional embodiment Middle selection DMRS types, the DMRS port number of the first kind, channel sequence, the DMRS port number of Second Type, data resource Granularity group DATA REG numbers are selected.
In an optional embodiment, when the product of above-mentioned channel sequence and DATA REG numbers is less than or equal to Equations of The Second Kind During the DMRS port number of type, the DMRS of the first kind is selected；And/or, when above-mentioned channel sequence and the product of DATA REG numbers More than Second Type DMRS port number when, select Second Type DMRS.Wherein, the channel sequence in the present embodiment include but It is not limited to：Data transfer layer number, data transmission stream number, data flow number, data Layer number, channel Rank, RI, order etc. are general Read.
A kind of DMRS dispensing devices are additionally provided in the present embodiment, and Figure 12 is according to embodiments of the present invention second The structured flowchart of DMRS dispensing devices, as shown in figure 12, the device include the second sending module 122, and the device is carried out below Explanation：
Second sending module 122, sends demodulated reference signal DMRS, the number of the DMRS port is N.
In an optional embodiment, above-mentioned second sending module 122 can indicate DMRS port in the following way Number：DMRS port number is indicated according to high-level signaling and/or physical layer signaling.
In an optional embodiment, DMRS port number can be indicated according in the following manner：According to PQI (PDSCH RE mapping and Quasi co-location Indicator) information or channel status information reports Type C SI Report type indicate DMRS port number.It should be noted that the signaling of above-mentioned type is only several preferred implementations Example, can also carry out the configuration of DMRS port number using other kinds of signaling.Below to how to carry out the number of DMRS port Notice illustrate：
In an optional embodiment, above-mentioned DMRS port number can be indicated according at least one in the following manner：It is logical The parameter for crossing the number of the DMRS port included in the corresponding form of PQI information is indicated；Pass through CSI report type bags At least one the CSI processes process contained is carried out at least, including situations below：The CSI included as CSI report type Process numbers are 1, and CSI process feedback classification, when being Class A, the number of DMRS port is CSI process Channel condition information measurement pilot tone CSI-RS resource port number；The CSI included as CSI report type Process numbers are 1, and CSI process feedback classification, when being Class B, the number of DMRS port is CSI process Comprising more than two channel condition informations measurement pilot tone CSI-RS resource in specific CSI-RS resource Port number, the specific CSI-RS resource are that the CSI-RS resource indexes CRI that receives in advance is corresponding CSI-RS resource；When the CSI process numbers that CSI report type are included are more than 1, the number of DMRS port The CSI process specified in the multiple CSI process included according to above-mentioned CSI report type are determined.
In an optional embodiment, the number of above-mentioned DMRS port according to CSI report type include it is multiple The CSI process specified in CSI process are determined including at least one of：As specified CSI process Feedback classification when being Class A, the measurement of channel condition information that the number of above-mentioned DMRS port is the CSI process specified Pilot tone CSI-RS resource port number；When specified CSI process feedback classification is Class B, DMRS ends The number of mouth is more than two channel condition informations measurement pilot tone CSI-RS that the CSI process specified are included The port number of specific CSI-RS resource in resource, above-mentioned specific CSI-RS resource are to connect in advance The corresponding CSI-RS resource of CSI-RS resource indexes CRI of receipts.
A kind of demodulated reference signal DMRS dispensing device is additionally provided in the present embodiment, and Figure 13 is according to of the invention real The structured flowchart of the third DMRS of example dispensing device is applied, as shown in figure 13, the device is sent out including configuration module 132 and the 3rd Module 134 is sent, the device is illustrated below.
Configuration module 132, for configuring at least two different types of DMRS in a Physical Resource Block PRB pair；The Three sending modules 134, are connected to above-mentioned configuration module 132, different types of for sending at least two on above-mentioned PRB pair DMRS。
In an optional embodiment, above-mentioned at least two different types of DMRS including first kind DMRS and the The DMRS of two types, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding； And/or, the DMRS of the Second Type includes the DMRS (that is, Non-precoded DMRS) of non-precoded.
In an optional embodiment, the DMRS of the first kind of configuration quantity is M, second in above-mentioned PRB pair The DMRS of type quantity is N number of, the DMRS of K1 data resource granularity group DATA REG and the first kind in above-mentioned PRB pair Port is associated, and K2 DATA REG in above-mentioned PRB pair is associated with the DMRS port of Second Type.
In an optional embodiment, above-mentioned 3rd sending module 134 can also carry out following operation：Pass through high level letter Make that (high-level signaling can be high-rise RRC signaling, and the high-rise RRC signaling included with above-mentioned first display signaling can be phase Same signaling or different signalings) and/or the physical layer signaling (physical layer included with the first above-mentioned display signaling Signaling can be identical signaling or different signalings) indicate in above-mentioned PRB pair while being configured with two kinds of DMRS, and mode above-mentioned M, N, K1, K2 value.
Figure 14 is the structured flowchart of the first DMRS reception device according to embodiments of the present invention, as shown in figure 14, the dress Put including the first processing module 144 of the first receiving module 142, the device is illustrated below.
First receiving module 142, for receiving the DMRS that the DMRS types of selection are indicated, wherein, the DMRS classes of the selection Type is the DMRS types selected from least two different DMRS types；First processing module 144, is connected to above-mentioned first and connects Module 142 is received, the data resource for carrying out channel estimation using DMRS for the type according to above-mentioned DMRS and being associated to DMRS Granularity group DATA REG carry out data demodulation.
In an optional embodiment, the DMRS of above-mentioned at least two different DMRS types includes the first kind DMRS and Second Type DMRS, wherein, the DMRS of the first kind includes the DMRS or beam forming of precoding Beamformed DMRS；And/or, the DMRS of the Second Type includes DMRS (that is, the Non-precoded of non-precoded DMRS)。
In an optional embodiment, above-mentioned first processing module 146 can be in the following way according to above-mentioned DMRS Type using DMRS carry out channel estimation and to DMRS associate data resource granularity group DATA REG carry out data demodulation： When it is determined that DMRS is the DMRS of the first kind, channel estimation directly is carried out using the above-mentioned DMRS received, and utilize channel The data resource granularity group DATA REG that estimated result is associated to DMRS carry out data demodulation；And/or, it is determined that above-mentioned DMRS is During the DMRS of Second Type, the DMRS received is multiplied with what is be previously received from the precoding Wd for sending equipment, and profit The result obtained with being multiplied carries out channel estimation；The data resource granularity group DATA associated using channel estimation results to DMRS REG carries out data demodulation.
In an optional embodiment, said apparatus also includes the second determining module, for by high-level signaling and/or Physical layer signaling determines the above-mentioned DMRS types of selection.
In an optional embodiment, above-mentioned second determining module can also determine to select according at least one following parameter The above-mentioned DMRS types selected：The DMRS port number of the first kind, channel sequence, the DMRS port number of Second Type, data money Source granularity group DATA REG numbers choosing.Wherein, the channel sequence in the present embodiment includes but is not limited to：Data transfer layer number, number According to concepts such as transport stream number, data flow number, data Layer number, channel Rank, RI, orders.
In an optional embodiment, when the product of above-mentioned channel sequence and DATA REG numbers is less than or equal to Equations of The Second Kind During the DMRS port number of type, the DMRS types for determining selection are the first kind；And/or, when channel sequence and DATA REG numbers Product be more than Second Type DMRS port number when, determine selection DMRS types be Second Type.
A kind of DMRS reception devices are additionally provided in the present embodiment, and Figure 15 is according to embodiments of the present invention second The structured flowchart of DMRS reception devices, as shown in figure 15, the device include the second receiving module 152, and the device is carried out below Explanation.
Second receiving module 152, for receiving demodulated reference signal DMRS, the DMRS port number is N.
In an optional embodiment, above-mentioned second receiving module 152 can also be determined as follows DMRS ends Mouth number：The DMRS port number is determined by high-level signaling and/or physical layer signaling.
In an optional embodiment, above-mentioned second receiving module 152 can also be determined as follows DMRS ends Mouth number：The DMRS port number is determined according to PQI information or channel status information reports Type C SI report type.
In an optional embodiment, above-mentioned second receiving module 152 can be determined at least one in the following way DMRS port number：Configured by the parameter of the number of the DMRS port included in the corresponding form of PQI information；Pass through At least one the CSI processes process that CSI report type are included is configured, including situations below：As CSI report The CSI process numbers that type is included be 1, and CSI process feedback classification be Class A when, DMRS port Number measures pilot tone CSI-RS resource port number for CSI process channel condition information；As CSI report The CSI process numbers that type is included be 1, and CSI process feedback classification be Class B when, DMRS port It is specific in more than two channel condition informations measurement pilot tone CSI-RS resource that number includes for CSI process CSI-RS resource port number, the specific CSI-RS resource are the CSI-RS resource received in advance Index the corresponding CSI-RS resource of CRI；When the CSI process numbers that CSI report type are included are more than 1, The CSI process specified in multiple CSI process that the number of DMRS port is included according to CSI report type enter Row is determined.
In an optional embodiment, the number of above-mentioned DMRS port according to CSI report type include it is multiple The CSI process specified in CSI process are determined including at least one of：As specified CSI process Feedback classification when being Class A, channel condition information that the number of DMRS port is the CSI process specified measurement pilot tone CSI-RS resource port number；When specified CSI process feedback classification is Class B, DMRS port Number is that more than two channel condition informations that the CSI process specified are included are measured in pilot tone CSI-RS resource Specific CSI-RS resource port number, above-mentioned specific CSI-RS resource are the CSI-RS that receives in advance The corresponding CSI-RS resource of resource indexes CRI.
Additionally provide a kind of DMRS method of reseptances in the present embodiment, Figure 16 is according to embodiments of the present invention the third DMRS reception device flow charts, as shown in figure 16, the flow include the 3rd receiving module 162 and Second processing module 164, below The device is illustrated.
3rd receiving module 162, it is different types of for receiving at least two in a Physical Resource Block PRB pair DMRS；Second processing module 164, is connected to above-mentioned 3rd receiving module 162, for different types of using above-mentioned at least two DMRS carries out channel estimation and the data resource granularity group DATA REG to above-mentioned at least two different types of DMRS associations Carry out data demodulation.
In an optional embodiment, above-mentioned at least two different types of DMRS including first kind DMRS and the The DMRS of two types, wherein, the DMRS of the first kind includes DMRS or beam forming the Beamformed DMRS of precoding； And/or, the DMRS of the Second Type includes non-precoded Non-precoded DMRS.
In an optional embodiment, said apparatus also include the 4th receiving module, for receive high-level signaling and/or Physical layer signaling；From the high-level signaling, (high-level signaling can be high-rise RRC signaling, include with the first above-mentioned display signaling High-rise RRC signaling can be identical signaling or different signalings) and/or physical layer signaling (with above-mentioned first The physical layer signaling that display signaling includes can be identical signaling or different signalings) the middle following information of determination： The quantity M of the type of DMRS in PRB pair, the DMRS of the first kind in PRB pair, the DMRS of Second Type quantity N, PRB With second in the internal data resource granularity group DATA REG associated with the DMRS port of first kind quantity K1, PRB pair The associated DATA REG of the DMRS port of type quantity K2.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module is located at many respectively In individual processor.
Embodiments of the invention additionally provide a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing following steps to be arranged to storage to be used for：
S1, selects DMRS type from least two different DMRS types；
S2, sends the DMRS that the above-mentioned DMRS types of selection are indicated.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：
S1, sends demodulated reference signal DMRS, the number of the DMRS port is N.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：
S1, configures at least two different types of DMRS in a Physical Resource Block PRB pair；
S2, sends at least two different types of DMRS on above-mentioned PRB pair.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：
S1, receives the DMRS that the DMRS types of selection are indicated, wherein, the DMRS types of the selection are different from least two DMRS types in the DMRS types that select；
S2, the data resource granularity that channel estimation is carried out using DMRS according to above-mentioned DMRS type and associated to DMRS Group DATA REG carry out data demodulation.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：
S1, receives demodulated reference signal DMRS, and the DMRS port number is N.
Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：
S1, receives at least two different types of DMRS in a Physical Resource Block PRB pair；
S2, channel estimation is carried out and to above-mentioned at least two inhomogeneity using above-mentioned at least two different types of DMRS The data resource granularity group DATA REG of the DMRS associations of type carry out data demodulation.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (Read- Only Memory, referred to as ROM), it is random access memory (Random Access Memory, referred to as RAM), mobile hard Disk, magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs above-mentioned steps according to the program code stored in storage medium.
Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, the present embodiment will not be repeated here.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to they are stored Performed in the storage device by computing device, and in some cases, can be shown to be performed different from order herein The step of going out or describe, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (35)

1. a kind of demodulated reference signal DMRS sending method, it is characterised in that including：
DMRS types are selected from least two different DMRS types；
Send the DMRS that the DMRS types of selection are indicated.
2. according to the method described in claim 1, it is characterised in that the DMRS that the DMRS types are indicated includes the first kind DMRS and Second Type DMRS, wherein, the DMRS of the first kind includes the DMRS or beam forming of precoding Beamformed DMRS；And/or, the DMRS of the Second Type includes the DMRS of non-precoded.
3. method according to claim 2, it is characterised in that when the DMRS that the DMRS types of selection are indicated is first During the DMRS of type, sending the DMRS of the DMRS types instruction of selection includes：
In the mapping process of transport layer to DMRS port, directly transport layer is mapped in the DMRS port one by one.
4. method according to claim 2, it is characterised in that when the DMRS that the DMRS types of selection are indicated is first During the DMRS of type, sending the DMRS of the DMRS types instruction of selection includes：
By the DMRS of the first kind from during DMRS port is mapped to antenna port, using precoding Wp to described DMRS processing, wherein, the Wp is non-unity battle array.
5. method according to claim 4, it is characterised in that including at least one of：
The Wp is identical with the precoding Wd that the DMRS of the first kind data resource granularity group DATAREG associated are used；
The number of the DMRS port of the first kind is equal with the number of plies of transport layer.
6. method according to claim 2, it is characterised in that when the DMRS that the DMRS types of selection are indicated is second During the DMRS of type, sending the DMRS of the DMRS types instruction of selection includes：
In the mapping process of transport layer to DMRS port, the transport layer is multiplied by after precoding Wd, re-mapped described In DMRS port.
7. method according to claim 2, it is characterised in that when the DMRS that the DMRS types of selection are indicated is second During the DMRS of type, sending the DMRS of the DMRS types instruction of selection includes：
, from during DMRS port is mapped to antenna port, the DMRS port is carried out by the DMRS of the Second Type Mapping is handled one by one, or from during the DMRS port is mapped to antenna port, using precoding WI to the DMRS Handled.
8. method according to claim 7, it is characterised in that including at least one of：
The precoding Wd that the data resource granularity group DATAREG that the precoding WI is associated with the DMRS of the Second Type is used Differ；
The number of the DMRS port of the Second Type is equal with the line number of the Wd；
The number of the DMRS port of the Second Type is equal with the number of the antenna port；
The WI is unit matrix.
9. according to the method described in claim 1, it is characterised in that also include：
Selected DMRS type is sent by high-level signaling and/or physical layer signaling.
10. method according to claim 2, it is characterised in that different from least two according at least one following parameter DMRS types in select DMRS types,
The DMRS port number of the first kind, channel sequence, the DMRS port number of Second Type, data resource granularity group DATA REG numbers.
11. method according to claim 10, it is characterised in that
When the product of the channel sequence and the DATA REG numbers is less than or equal to the DMRS port number of the Second Type When, select the DMRS of the first kind；And/or,
When the product of the channel sequence and the DATA REG numbers is more than the DMRS port number of the Second Type, selection The DMRS of Second Type.
12. a kind of DMRS sending methods, it is characterised in that including：
Demodulated reference signal DMRS is sent, the DMRS port number is N.
13. method according to claim 12, it is characterised in that the DMRS port number is indicated according in the following manner：
The DMRS port number is indicated according to high-level signaling and/or physical layer signaling.
14. method according to claim 12, it is characterised in that the DMRS port number is indicated according in the following manner：
The DMRS port number is indicated according to PQI information and/or channel status information reports Type C SI report type.
15. method according to claim 14, it is characterised in that the DMRS ends are indicated according at least one in the following manner Mouth number：
Indicated by the parameter of the number of the DMRS port included in the corresponding form of the PQI information；
At least one indicated by the CSI report type CSI processes process included, including situations below：
The CSI process numbers included as the CSI report type are 1, and the feedback classification of the CSI process During for Class A, the number of the DMRS port measures pilot tone CSI-RS for the channel condition information of the CSI process Resource port number；
The CSI process numbers included as the CSI report type are 1, and the feedback classification of the CSI process During for Class B, the number of the DMRS port is surveyed for more than two channel condition informations that the CSI process are included Measure the port number of the specific CSI-RS resource in pilot tone CSI-RS resource, the specific CSI-RS Resource is the corresponding CSI-RS resource of CSI-RS resource indexes CRI received in advance；
When the CSI process numbers that the CSI report type are included are more than 1, the number of the DMRS port according to The CSI process specified in multiple CSI process that the CSI report type are included are determined.
16. method according to claim 15, it is characterised in that the number of the DMRS port is according to the CSI The CSI process specified in multiple CSI process that report type are included be determined including it is following at least it One：
When the feedback classification of the CSI process specified is Class A, the number of the DMRS port is specified to be described CSI process channel condition information measurement pilot tone CSI-RS resource port number；
When the feedback classification of the CSI process specified is Class B, the number of the DMRS port is specified to be described More than two channel condition informations measurement pilot tone CSI-RS resource for including of CSI process in it is specific CSI-RS resource port number, the specific CSI-RS resource are the CSI-RS received in advance The corresponding CSI-RS resource of resource indexes CRI.
17. a kind of demodulated reference signal DMRS sending method, it is characterised in that including：
At least two different types of DMRS are configured in a Physical Resource Block PRB pair；
Described at least two different types of DMRS are sent on the PRB pair.
18. method according to claim 17, it is characterised in that at least two different types of DMRS includes first The DMRS of the type and DMRS of Second Type, wherein, the DMRS of the first kind includes the DMRS or beam forming of precoding Beamformed DMRS；And/or, the DMRS of the Second Type includes the DMRS of non-precoded.
19. method according to claim 18, it is characterised in that the DMRS of the first kind of configuration in the PRB pair Quantity is M, the DMRS of Second Type quantity be it is N number of, K1 data resource granularity group DATA REG in the PRB pair and The DMRS port of the first kind is associated, and K2 DATA REG in the PRB pair is associated with the DMRS port of Second Type, And send the precoding Wd for this K2 DATA REG.
20. method according to claim 19, it is characterised in that methods described also includes：
Indicate to be configured with two kinds of DMRS simultaneously in the PRB pair by high-level signaling and/or physical layer signaling, and send out Send the M, N, K1, K2 value.
21. a kind of method that demodulated reference signal DMRS is received, it is characterised in that including：
The DMRS that the DMRS types of selection are indicated is received, wherein, the DMRS types of the selection are different from least two The DMRS types selected in DMRS types；
The data resource grain that channel estimation is carried out using the DMRS according to the type of the DMRS and associated to the DMRS Degree group DATA REG carry out data demodulation.
22. method according to claim 21, it is characterised in that the DMRS bags of described at least two different DMRS types The DMRS of the first kind and the DMRS of Second Type are included, wherein, the DMRS of the first kind includes the DMRS or ripple of precoding Beam forming Beamformed DMRS；And/or, the DMRS of the Second Type includes the DMRS of non-precoded.
23. method according to claim 22, it is characterised in that carried out according to the type of the DMRS using the DMRS Channel estimation and the data resource granularity group DATA REG progress data demodulation associated to the DMRS include：
When it is determined that the DMRS is the DMRS of the first kind, channel estimation directly is carried out using the DMRS received, and The data resource granularity group DATA REG associated using channel estimation results to the DMRS carry out data demodulation；And/or,
When it is determined that the DMRS is the DMRS of Second Type, by the DMRS received and the precoding Wd being previously received It is multiplied, and the result obtained using being multiplied carries out channel estimation；The data money associated using channel estimation results to the DMRS Source granularity group DATA REG carry out data demodulation.
24. method according to claim 21, it is characterised in that also include：
The DMRS types of selection are determined by high-level signaling and/or physical layer signaling.
25. method according to claim 22, it is characterised in that according at least one following parameter determines selection DMRS types：
The DMRS port number of the first kind, channel sequence, the DMRS port number of Second Type, data resource granularity group DATA REG numbers are selected.
26. method according to claim 25, it is characterised in that
When the product of the channel sequence and the DATA REG numbers is less than or equal to the DMRS port number of the Second Type When, the DMRS types for determining selection are the first kind；And/or,
When the product of the channel sequence and the DATA REG numbers is more than the DMRS port number of the Second Type, it is determined that The DMRS types of selection are Second Type.
27. a kind of DMRS method of reseptances, it is characterised in that including：
Demodulated reference signal DMRS is received, the DMRS port number is N.
28. method according to claim 27, it is characterised in that the DMRS port number is determined according in the following manner：
The DMRS port number is determined by high-level signaling and/or physical layer signaling.
29. method according to claim 27, it is characterised in that the DMRS port number is determined according in the following manner：
The DMRS port number is determined according to PQI information and/or channel status information reports Type C SI report type.
30. method according to claim 29, it is characterised in that the DMRS ends are determined according at least one in the following manner Mouth number：
The DMRS port is determined by the parameter of the number of the DMRS port included in the corresponding form of the PQI information Number；
The DMRS port number is determined by the CSI report type CSI processes process included, including it is following At least one situation：
The CSI process numbers included as the CSI report type are 1, and the feedback classification of the CSI process During for Class A, the number of the DMRS port measures pilot tone CSI-RS for the channel condition information of the CSI process Resource port number；
The CSI process numbers included as the CSI report type are 1, and the feedback classification of the CSI process During for Class B, the number of the DMRS port is surveyed for more than two channel condition informations that the CSI process are included Measure the port number of the specific CSI-RS resource in pilot tone CSI-RS resource, the specific CSI-RS Resource is the corresponding CSI-RS resource of CSI-RS resource indexes CRI received in advance；
When the CSI process numbers that the CSI report type are included are more than 1, the number of the DMRS port according to The CSI process specified in multiple CSI process that the CSI report type are included are determined.
31. method according to claim 30, it is characterised in that the number of the DMRS port is according to the CSI The CSI process specified in multiple CSI process that report type are included be determined including it is following at least it One：
When the feedback classification of the CSI process specified is Class A, the number of the DMRS port is specified to be described CSI process channel condition information measurement pilot tone CSI-RS resource port number；
When the feedback classification of the CSI process specified is Class B, the number of the DMRS port is specified to be described More than two channel condition informations measurement pilot tone CSI-RS resource for including of CSI process in it is specific CSI-RS resource port number, the specific CSI-RS resource are the CSI-RS received in advance The corresponding CSI-RS resource of resource indexes CRI.
32. a kind of DMRS method of reseptances, it is characterised in that including：
At least two different types of DMRS are received in a Physical Resource Block PRB pair；
Channel estimation is carried out using described at least two different types of DMRS and different types of to described at least two The data resource granularity group DATA REG of DMRS associations carry out data demodulation.
33. method according to claim 32, it is characterised in that at least two different types of DMRS includes first The DMRS of the type and DMRS of Second Type, wherein, the DMRS of the first kind includes the DMRS or beam forming of precoding Beamformed DMRS；And/or, the DMRS of the Second Type includes the DMRS of non-precoded.
34. method according to claim 33, it is characterised in that methods described also includes：
Receive high-level signaling and/or physical layer signaling；
Following information is determined from the high-level signaling and/or physical layer signaling：It is the type of DMRS in the PRB pair, described With the first kind in the DMRS of the first kind in PRB pair quantity M, the DMRS of Second Type quantity N, the PRB pair DMRS ends in the associated data resource granularity group DATA REG of DMRS port quantity K1, the PRB pair with Second Type The associated DATA REG of mouth quantity K2, and receive precoding Wd.
35. a kind of demodulated reference signal DMRS dispensing device, it is characterised in that including：
First determining module, for selecting DMRS types from least two different DMRS types；
First sending module, for sending the DMRS that the DMRS types of selection are indicated.
CN201610203732.XA 2016-04-01 2016-04-01 DMRS sending method and device Pending CN107294682A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201610203732.XA CN107294682A (en) 2016-04-01 2016-04-01 DMRS sending method and device
PCT/CN2017/078321 WO2017167156A1 (en) 2016-04-01 2017-03-27 Dmrs transmission method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610203732.XA CN107294682A (en) 2016-04-01 2016-04-01 DMRS sending method and device

Publications (1)

Publication Number Publication Date
CN107294682A true CN107294682A (en) 2017-10-24

Family

ID=59962615

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610203732.XA Pending CN107294682A (en) 2016-04-01 2016-04-01 DMRS sending method and device

Country Status (2)

Country Link
CN (1) CN107294682A (en)
WO (1) WO2017167156A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019109921A1 (en) * 2017-12-04 2019-06-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiple resource set configuration
WO2020093198A1 (en) * 2018-11-05 2020-05-14 Telefonaktiebolaget Lm Ericsson (Publ) Method and network element of scheduling uplink reference signal resource
CN111416692A (en) * 2019-01-07 2020-07-14 中国移动通信有限公司研究院 Configuration method and equipment
CN111614385A (en) * 2019-06-21 2020-09-01 维沃移动通信有限公司 Method and equipment for processing multiple input multiple output layers
US11757513B2 (en) * 2016-05-13 2023-09-12 Telefonaktiebolaget Lm Ericsson (Publ) Multi-resolution CSI feedback

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110138527B (en) * 2018-02-09 2022-05-27 大唐移动通信设备有限公司 Resource indicating and determining method and device
WO2022027485A1 (en) * 2020-08-06 2022-02-10 Nec Corporation Methods for communication, terminal device, network device and computer-readable media

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8693429B2 (en) * 2009-03-31 2014-04-08 Qualcomm Incorporated Methods and apparatus for generation and use of reference signals in a communications system
CN102170330B (en) * 2011-04-29 2017-08-08 中兴通讯股份有限公司 The sending method and system of measuring reference signals
KR20130054180A (en) * 2011-11-14 2013-05-24 삼성전자주식회사 Method of reference signaling resource allocation for control channel transmission in wireless communication system
KR102207480B1 (en) * 2011-11-16 2021-01-26 삼성전자 주식회사 Method and apparatus for transmitting control information in Wireless communication systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11757513B2 (en) * 2016-05-13 2023-09-12 Telefonaktiebolaget Lm Ericsson (Publ) Multi-resolution CSI feedback
WO2019109921A1 (en) * 2017-12-04 2019-06-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiple resource set configuration
US11246127B2 (en) 2017-12-04 2022-02-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Multiple resource set configuration
WO2020093198A1 (en) * 2018-11-05 2020-05-14 Telefonaktiebolaget Lm Ericsson (Publ) Method and network element of scheduling uplink reference signal resource
US11985655B2 (en) 2018-11-05 2024-05-14 Telefonaktiebolaget Lm Ericsson (Publ) Method and network element of scheduling uplink reference signal resource
CN111416692A (en) * 2019-01-07 2020-07-14 中国移动通信有限公司研究院 Configuration method and equipment
CN111614385A (en) * 2019-06-21 2020-09-01 维沃移动通信有限公司 Method and equipment for processing multiple input multiple output layers
CN111614385B (en) * 2019-06-21 2021-09-10 维沃移动通信有限公司 Method and equipment for processing multiple input multiple output layers

Also Published As

Publication number Publication date
WO2017167156A1 (en) 2017-10-05

Similar Documents

Publication Publication Date Title
US11757495B2 (en) Channel state information for reference signals in a wireless communication system
US11152979B2 (en) Method and apparatus for codebook design and signaling
US10411868B2 (en) Method and apparatus for channel state information (CSI) reporting
US10164747B2 (en) Method and apparatus for operating MIMO measurement reference signals and feedback
CN108370266B (en) Method and apparatus for transmitting and receiving channel state information in wireless communication system
US20190131008A1 (en) Methods and Systems for CSI-RS Port Selection for CSI-Reporting
CN107294682A (en) DMRS sending method and device
CN107113643B (en) Resource selection method and device and electronic equipment
US8750404B2 (en) Codebook subsampling for PUCCH feedback
CN101917365B (en) Method, device and system for configuring codebook
US10574409B2 (en) Information notification method and channel state information process execution method
CN107888264B (en) Feedback method and device of channel information
CN109845126A (en) Multi-beam code book with the expense advanced optimized
KR20180124105A (en) CSI feedback method, precoding method, apparatus, terminal and base station
CN109495149A (en) Communication means, the network equipment, terminal device and system
CN108352938B (en) Channel state information measuring and feedback method, user equipment and base station
CN108282255B (en) Parameter value determination method, parameter value configuration method, parameter value determination device, parameter value configuration device, terminal and base station
JP2019512948A (en) CSI feedback method, precoding method and apparatus
CN109391305B (en) Communication processing method and device
CN106685582A (en) CSI feedback and codebook configuration signaling configuration method and device
CN107733476A (en) The feedback method and device of channel condition information
CN106685493A (en) Configuration method and device of channel measurement and channel information feedback method and device
CN112312464A (en) Method and communication device for reporting channel state information
CN110649951B (en) Channel state information feedback and data transmission method and device
CN107733495A (en) Channel condition information processing method, device, system, terminal and base station

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20171024

WD01 Invention patent application deemed withdrawn after publication