CN102843325B - A kind of reference signal processing method of open loop MIMO systems and system - Google Patents

Abstract

The invention discloses the reference signal processing method and system of a kind of open loop MIMO systems, can be in special subframe, using CDM and/or TDM and/or FDM technology, the open loop DMRS of different groups in one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbols, is multiplexed；Identical or different weights are used for the open loop DMRS of different groups, corresponding weighting process is carried out.The present invention carries out the pilot design of open loop based on DMRS, the weights of the precoding weights or beam shaping of network side can not be limited by code book, the degree of accuracy of precoding or beam forming weight is greatly improved, UE performances in an open loop mode can be improved as far as possible on the basis of UE implementation complexity and test complexity and resource consumption is not increased.

Description

A kind of reference signal processing method of open loop MIMO systems and system

Technical field

The present invention relates to the communications field, and in particular at a kind of reference signal of open loop multiple-input and multiple-output (MIMO) system Reason method and system.

Background technology

In Long Term Evolution LTE (Long term evolution, LTE) version (Release, R) 8/9, in order to channel Quality measure and to receive data symbol be demodulated, devise CRS (Common Reference Signal, Public reference signal), UE (User Equipment, user equipment) can carry out the measurement of channel by CRS, so as to determine UE Carry out cell reselection and be switched to Target cell, and the measurement of channel quality is carried out in UE connection status, when interference rank compared with Gao Shi, physical layer can be disconnected by high-rise related wireless link connection failure signaling.In LTE R10, in order to enter One step improves the throughput of the average availability of frequency spectrum of cell and the cell edge availability of frequency spectrum and each UE, respectively defines Two kinds of reference signals：CSI-RS (channel information reference signal) and DMRS (demodulated reference signal)；Wherein, CSI-RS is used for channel Measurement, can calculate UE by the measurement to CSI-RS needs PMI (the Precoding Matrix to base station feedback Indicator, pre-coding matrix index), CQI (ChannelQuality Indicator, channel quality information indicate) and RI (Rank Indicator, order instruction).UE can be made pellucidly to receive downlink data using DMRS, and base station side need not be known Applicable precoding weights, can so reduce the load of PDCCH, while restriction of the code book to weights can be reduced.

In R8, the transmission of TM (transmission mode) 1 to TM6 is carried out using CRS, it is also sharp for this open loop modes of TM3 It is demodulated with CRS, in the optimization that R9 to the R10 stages have only carried out transmitting based on DMRS to TM1, TM2, TM4 to TM6, and Optimization based on DMRS is not carried out to this open loop modes of TM3.In future version, it is contemplated that energy-conservation, resource saving etc. are all Multifactor, CRS needs gradually to fade out, so for this open loop sending modes of TM3 need to be designed based on DMRS, but at present Not corresponding technical support, i.e., cannot be realized the transmission of open loop MIMO, cause public reference signal pilot tone by DMRS The extra resource expense brought is higher.

The content of the invention

In view of this, present invention is primarily targeted at provide a kind of reference signal processing method of open loop MIMO systems and System, realizes the transmission of open loop MIMO by DMRS, so as to reduce the extra resource expense that public reference signal pilot tone is brought.

To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：

A kind of reference signal processing method of open loop MIMO systems, the method include：

In special subframe, using CDM and/or TDM and/or FDM technology, in the 2nd, 3,5,6,9,10 OFDM symbols One or more OFDM symbols on the different group of multiplexing open loop DMRS；For the different open loop DMRS for organizing using identical or different Weights, carry out corresponding weighting process.

The OFDM symbol for carrying open loop DMRS is { 2,3,9,10 } individual OFDM symbol.

Open loop DMRS is carried on the 0th to 11 subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, wherein the 0th to Carry identical or different DMRS groups on 11 subcarriers respectively, in each DMRS group, adopt identical precoding or wave beam Forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on the { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } height of { 2,3 } and { 9,10 } individual OFDM symbol and carries On ripple, wherein DMRS groups 0 are carried on { 0,4 } individual subcarrier, DMRS groups 1 on { 1,5 } individual subcarrier, are carried, { 6,10 } are individual DMRS groups 2 are carried on subcarrier, is carried on { 7,11 } individual subcarrier and is prelisted using identical in DMRS groups 3, each DMRS group Code or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, as each DMRS Group in include two DMRS ports, at this moment using walsh codes come carry out respectively be located at { 2,3 } and/or { 9,10 } individual OFDM symbol The multiplexing of two ports in the two neighboring pilot resource element of upper same sub-carrier, walsh codes adopt [1,1], [1, -1]；When Comprising more than two DMRS ports in each DMRS group, at this moment using walsh codes carrying out positioned at { 2,3 } and { 9,10 } individual OFDM Multiplexing on symbol in four pilot resource elements of same sub-carrier more than two ports, walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], or every 2k DMRS groups and 2k+1 DMRS groups prelist for one Code character, the different DMRS groups in same precoding group carry out precoding using the weights of the different layers of identical precoding, and wherein k is Nonnegative integer.

Open loop DMRS is carried on { 1,5,7,11 } individual subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 1,5 } individual subcarrier, is carried in DMRS groups 1, each DMRS group on { 7,11 } individual subcarrier and is adopted phase Same precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups； Or,

Open loop DMRS is carried on { 0,5,6,11 } individual subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 0,5 } individual subcarrier, is carried in DMRS groups 1, each DMRS group on { 6,11 } individual subcarrier and is adopted phase Same precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, as each DMRS Group in include two DMRS ports, at this moment using walsh codes come carry out respectively be located at { 2,3 } and/or { 9,10 } individual OFDM symbol The multiplexing of two ports in the two neighboring pilot resource element of upper same sub-carrier, walsh codes adopt [1,1], [1, -1]；When Comprising more than two DMRS ports in each DMRS group, at this moment using walsh codes carrying out positioned at { 2,3 } and { 9,10 } individual OFDM Multiplexing on symbol in four pilot resource elements of same sub-carrier more than two ports, walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], leading on the different pilot sub-carriers in [1, -1, -1,1], and/or same DMRS groups Weights of the frequency resource using the different layers of identical precoding, the pilot resources in same pilot sub-carrier are using identical precoding The weights of identical layer.

Open loop DMRS be carried on { 0,4,6,10 } the individual subcarrier and { 9,10 } individual OFDM symbol of { 2,3 } the 1, 5,7,11 }, on individual subcarrier, DMRS groups 0, { 6,7,10,11 } individual subcarrier are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the Upper carrying DMRS groups 1, adopt identical precoding or beam forming weight in each DMRS group, between DMRS groups using identical or The different precoding of person or beam forming weight.

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, as each DMRS Group in include two DMRS ports, at this moment using walsh codes come carry out be located at { 2,3 } and/or { 9,10 } individual OFDM symbol on phase With the multiplexing of two ports in the two neighboring pilot resource element of subcarrier, walsh codes adopt [1,1], [1, -1]；When each Comprising more than two DMRS ports in DMRS groups, at this moment using walsh codes carrying out being located in { 2,3 } individual OFDM symbol { 0 } It is more than answering for two ports on individual subcarrier and { 9,10 } individual OFDM symbol on { 1 } individual subcarrier in four pilot resource elements With { 4 } individual subcarrier and four pilot tones on { 5 } individual subcarrier in { 9,10 } individual OFDM symbol in { 2,3 } individual OFDM symbol It is more than the multiplexing of two ports on resource element, carries out individual positioned at { 6 } individual subcarrier in { 2,3 } individual OFDM symbol and { 9,10 } In OFDM symbol on { 7 } individual subcarrier in four pilot resource elements more than two ports multiplexing, and carry out be located at 2, 3 } { 10 } individual subcarrier and four pilot resources on { 11 } individual subcarrier in { 9,10 } individual OFDM symbol in individual OFDM symbol It is more than the multiplexing of two ports on element, walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, - 1,1]；And/or { 0 } individual subcarrier and { 1 } individual subcarrier in { 9,10 } individual OFDM symbol are pre- in { 2,3 } individual OFDM symbol Coding layer group 0, in { 2,3 } individual OFDM symbol, { 4 } individual subcarrier and { 5 } individual subcarrier in { 9,10 } individual OFDM symbol are one The code layer that prelists group 1, in { 2,3 } individual OFDM symbol, { 6 } individual subcarrier and { 7 } individual subcarrier in { 9,10 } individual OFDM symbol are One prelists code layer group 2, and in { 2,3 } individual OFDM symbol, in { 10 } individual subcarrier and { 9,10 } individual OFDM symbol, { 11 } height is carried Ripple is the code layer group 3 that prelists；The different layers of identical precoding weights are used between different layers group in same DMRS groups Weights carry out precoding processing, and the identical layer of identical precoding weights is used within the different layers group in same DMRS groups Weights carry out precoding processing.

The OFDM symbol for carrying open loop DMRS is { 2,3 } and { 5,6 } individual OFDM symbol.

Open loop DMRS is carried on the 0th to 11 subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, wherein the 0th to 11 Carry identical or different DMRS groups on individual subcarrier respectively, adopt in each DMRS group identical precoding or wave beam into Shape weights, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol On, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, often Identical precoding or beam forming weight are adopted in individual DMRS groups, adopt between DMRS groups identical or different precoding or Person's beam forming weight.

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, as each DMRS Group in include two DMRS ports, at this moment using walsh codes come carry out respectively be located at { 2,3 } and/or { 5,6 } individual OFDM symbol on The multiplexing of two ports in the two neighboring pilot resource element of same sub-carrier, walsh codes adopt [1,1], [1, -1]；When every Comprising more than two DMRS ports in individual DMRS groups, at this moment accorded with to carry out being located at { 2,3 } and { 5,6 } individual OFDM using walsh codes Multiplexing on number in four pilot resource elements of same sub-carrier more than two ports, walsh codes adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], or every 2k DMRS groups and 2k+1 DMRS groups are a precoding Group, the different DMRS groups in same precoding group carry out precoding using the weights of the different layers of identical precoding, and wherein k is non- Negative integer.

Open loop DMRS is carried on { 1,5,7,11 } individual subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, wherein the DMRS groups 0 are carried on { 1,5 } individual subcarrier, is carried on { 7,11 } individual subcarrier in DMRS groups 1, each DMRS group using identical Precoding or beam forming weight, identical or different precoding or beam forming weight are adopted between DMRS groups；Or Person,

Open loop DMRS is carried on { 0,5,6,11 } individual subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, wherein the DMRS groups 0 are carried on { 0,5 } individual subcarrier, is carried on { 6,11 } individual subcarrier in DMRS groups 1, each DMRS group using identical Precoding or beam forming weight, identical or different precoding or beam forming weight are adopted between DMRS groups.

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, as each DMRS Group in include two DMRS ports, at this moment using walsh codes come carry out respectively be located at { 2,3 } and/or { 5,6 } individual OFDM symbol on The multiplexing of two ports in the two neighboring pilot resource element of same sub-carrier, walsh codes adopt [1,1], [1, -1]；When every Comprising more than two DMRS ports in individual DMRS groups, at this moment accorded with to carry out being located at { 2,3 } and { 5,6 } individual OFDM using walsh codes Multiplexing on number in four pilot resource elements of same sub-carrier more than two ports, walsh codes adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], the pilot tone on different pilot sub-carriers in [1, -1, -1,1], and/or same DMRS groups Weights of the resource using the different layers of identical precoding, phase of the pilot resources in same pilot sub-carrier using identical precoding With the weights of layer.

Open loop DMRS is carried on { 0,4,6,10 } individual subcarrier of { 2,3 } individual OFDM symbol and { 5,6 } individual OFDM symbols Number { 1,5,7,11 } individual subcarrier on, carry DMRS groups 0, { 6,7,10,11 } on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the Carry on individual subcarrier in DMRS groups 1, each DMRS group and adopt identical precoding or beam forming weight, adopt between DMRS groups With identical or different precoding or beam forming weight.

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, as each DMRS Two DMRS ports are included in group, it is at this moment identical in { 2,3 } and/or { 5,6 } individual OFDM symbol to carry out using walsh codes The multiplexing of two ports in the two neighboring pilot resource element of subcarrier, walsh codes adopt [1,1], [1, -1]；When each Comprising more than two DMRS ports in DMRS groups, at this moment using walsh codes carrying out being located in { 2,3 } individual OFDM symbol { 0 } It is more than answering for two ports on individual subcarrier and { 5,6 } individual OFDM symbol on { 1 } individual subcarrier in four pilot resource elements With carrying out being located in { 2,3 } individual OFDM symbol in { 4 } individual subcarrier and { 5,6 } individual OFDM symbol four on { 5 } individual subcarrier In individual pilot resource element more than two ports multiplexing, carry out be located at { 2,3 } individual OFDM symbol on { 6 } individual subcarrier and Multiplexing in { 5,6 } individual OFDM symbol on { 7 } individual subcarrier in four pilot resource elements more than two ports, and carry out Lead positioned at four on { 11 } individual subcarrier on { 10 } individual subcarrier in { 2,3 } individual OFDM symbol and { 5,6 } individual OFDM symbol It is more than the multiplexing of two ports on frequency resource element, walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1]；And/or { 0 } individual subcarrier and { 1 } height in { 5,6 } individual OFDM symbol are carried in { 2,3 } individual OFDM symbol Ripple is the code layer group 0 that prelists, and in { 2,3 } individual OFDM symbol, { 4 } individual subcarrier and { 5 } height in { 5,6 } individual OFDM symbol are carried Ripple prelists code layer group 1 for one, { 7 } height in { 6 } individual subcarrier and { 5,6 } individual OFDM symbol in { 2,3 } individual OFDM symbol Carrier wave prelists code layer group 2 for one, in { 2,3 } individual OFDM symbol in { 10 } individual subcarrier and { 5,6 } individual OFDM symbol { 11 } Individual subcarrier is the code layer group 3 that prelists；Between different layers group in same DMRS groups using identical precoding weights not Precoding processing is carried out with the weights of layer, using identical precoding weights within the different layers group in same DMRS groups The weights of identical layer carry out precoding processing.

Open loop DMRS is carried in { 2,6 } individual OFDM symbol.

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,6 } individual OFDM symbol, DMRS groups 0 are carried on wherein the { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,6 } individual OFDM symbol, DMRS groups 0 are carried wherein on { 0,1 } individual subcarrier, DMRS groups 1, { 6,7 } individual subcarrier on { 4,5 } individual subcarrier, is carried Upper carrying DMRS groups 2, carry DMRS groups 3 on { 10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,6 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, DMRS groups 1, each DMRS on { 7,8,10,11 } individual subcarrier, is carried Identical precoding or beam forming weight are adopted in group, identical or different precoding or wave beam between DMRS groups, is adopted Forming weight；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,6 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 is carried on { 3,4 } individual subcarrier, is held on { 7,8 } individual subcarrier DMRS groups 2 are carried, is carried on { 10,11 } individual subcarrier Forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2 } individual OFDM symbol and { 6 } On { 1,2,4,5,7,8,10,11 } individual subcarrier of individual OFDM symbol, wherein carrying on { 0,1,2,3,4,5 } individual subcarrier DMRS groups 0, carry DMRS groups 1 on { 6,7,8,9,10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Person's beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2 } individual OFDM symbol and { 6 } On { 1,2,4,5,7,8,10,11 } individual subcarrier of individual OFDM symbol, wherein { 0,1 } in { 2 } individual OFDM symbol is individual DMRS groups 0 are carried on { 1,2 } individual subcarrier on subcarrier and { 6 } individual OFDM symbol, the in { 2 } individual OFDM symbol DMRS groups 1, { 2 } individual OFDM symbols are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 6 } individual OFDM symbol DMRS groups 2, { 2 } are carried on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 6 } individual OFDM symbol on number Carry on { 10,11 } individual subcarrier on { 9,10 } individual subcarrier and { 6 } individual OFDM symbol in individual OFDM symbol Identical precoding or beam forming weight are adopted in DMRS groups 3, each DMRS group, using identical or different between DMRS groups Precoding or beam forming weight.

For in each DMRS group, different DMRS ports are multiplexed by the way of FDM and/or frequency domain CDM, when each Two DMRS ports are included in DMRS groups, it is at this moment adjacent in { 2 } and/or { 6 } individual OFDM symbol to carry out using walsh codes The multiplexing of two ports in two pilot resource elements of subcarrier, walsh codes adopt [1,1], [1, -1]；When each DMRS group It is interior comprising more than two DMRS ports, at this moment using walsh codes carrying out being located at { 2 } and/or { 6 } individual OFDM symbol same It is more than the multiplexing of two-port in adjacent four pilot resource elements in same DMRS groups in OFDM symbol；Walsh codes are adopted With [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Open loop DMRS is carried in { 2,5,6,10 } individual OFDM symbol.

Open loop DMRS is carried on the { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } height of OFDM { 2,5,6,10 } individual OFDM symbol and carries On ripple, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, Identical precoding or beam forming weight are adopted in each DMRS group, identical or different precoding between DMRS groups, is adopted Or beam forming weight；Or,

Open loop DMRS is carried on the { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } height of OFDM { 2,5,6,10 } individual OFDM symbol and carries On ripple, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 on { 4,5 } individual subcarrier, are carried, { 6,7 } are individual DMRS groups 2 are carried on subcarrier, is carried on { 10,11 } individual subcarrier and is prelisted using identical in DMRS groups 3, each DMRS group Code or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,10 } individual OFDM symbol On, wherein DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, DMRS groups 1 are carried on { 7,8,10,11 } individual subcarrier, often Identical precoding or beam forming weight are adopted in individual DMRS groups, adopt between DMRS groups identical or different precoding or Person's beam forming weight；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,10 } individual OFDM symbol On, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, on { 3,4 } individual subcarrier, carry DMRS groups 1, { 7,8 } height DMRS groups 2 are carried on carrier wave, is carried on { 10,11 } individual subcarrier Or beam forming weight, identical or different precoding or beam forming weight are adopted between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and the On { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,10 } individual OFDM symbol, wherein { 0,1,2,3,4,5 } individual subcarrier Upper carrying DMRS groups 0, carry pre- using identical in DMRS groups 1, each DMRS group on { 6,7,8,9,10,11 } individual subcarrier Coding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and the On { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,10 } individual OFDM symbol, wherein in { 2 } individual OFDM symbol DMRS groups 0, { 2 } individual OFDM symbols are carried on { 1,2 } individual subcarrier on { 0,1 } individual subcarrier and { 5 } individual OFDM symbol DMRS groups 1, { 2 } are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 5 } individual OFDM symbol on number DMRS groups are carried on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 5 } individual OFDM symbol in individual OFDM symbol 2, on { 10,11 } the individual subcarrier on { 9,10 } individual subcarrier and { 5 } individual OFDM symbol in { 2 } individual OFDM symbol DMRS groups 3 are carried, { 1,2 } on { 0,1 } individual subcarrier and { 10 } individual OFDM symbol in { 6 } individual OFDM symbol is individual DMRS groups 4 are carried on subcarrier, on { 3,4 } the individual subcarrier and { 10 } individual OFDM symbol in { 6 } individual OFDM symbol DMRS groups 5, { 6,7 } the individual subcarrier and { 10 } individual OFDM in { 6 } individual OFDM symbol are carried on { 4,5 } individual subcarrier DMRS groups 6 are carried on { 7,8 } individual subcarrier on symbol, { 9,10 } individual subcarrier in { 6 } individual OFDM symbol and the { 10 } carry on { 10,11 } the individual subcarrier in individual OFDM symbol in DMRS groups 7, each DMRS group and adopt identical precoding Or beam forming weight, identical or different precoding or beam forming weight are adopted between DMRS groups.

For in each DMRS group, different DMRS ports are multiplexed by the way of FDM and/or frequency domain CDM, when each Two DMRS ports are included in DMRS groups, at this moment using walsh codes come carry out being located at { 2 } and/or { 5 } and/or { 6 } and/or { 10 } in individual OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, walsh codes using [1, 1], [1, -1]；Comprising more than two DMRS ports in each DMRS group, at this moment using walsh codes come carry out being located at { 2 } and/ Or in same OFDM symbol, adjacent four pilot tones of same DMRS groups are provided in { 5 } and/or { 6 } and/or { 10 } individual OFDM symbol It is more than the multiplexing of two-port on source element；Walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, - 1,1].

Open loop DMRS is carried in { 2,5,6,9 } individual OFDM symbol.

Open loop DMRS is carried on the { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } height of OFDM { 2,5,6,9 } individual OFDM symbol and carries On ripple, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, Identical precoding or beam forming weight are adopted in each DMRS group, identical or different precoding between DMRS groups, is adopted Or beam forming weight；Or,

Open loop DMRS is carried on the { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } height of OFDM { 2,5,6,9 } individual OFDM symbol and carries On ripple, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 on { 4,5 } individual subcarrier, are carried, { 6,7 } are individual DMRS groups 2 are carried on subcarrier, is carried on { 10,11 } individual subcarrier and is prelisted using identical in DMRS groups 3, each DMRS group Code or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,9 } individual OFDM symbol, DMRS groups 0 are carried wherein on { 0,1,3,4 } individual subcarrier, DMRS groups 1 on { 7,8,10,11 } individual subcarrier, are carried, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,9 } individual OFDM symbol, DMRS groups 0 are carried wherein on { 0,1 } individual subcarrier, DMRS groups 1, { 7,8 } individual subcarrier on { 3,4 } individual subcarrier, is carried Upper carrying DMRS groups 2, carry DMRS groups 3 on { 10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and the On { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,9 } individual OFDM symbol, wherein { 0,1,2,3,4,5 } individual subcarrier Upper carrying DMRS groups 0, carry pre- using identical in DMRS groups 1, each DMRS group on { 6,7,8,9,10,11 } individual subcarrier Coding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and the On { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,9 } individual OFDM symbol, wherein in { 2 } individual OFDM symbol 0, 1 } DMRS groups 0 are carried on { 1,2 } the individual subcarrier on individual subcarrier and { 5 } individual OFDM symbol, in { 2 } individual OFDM symbol { 3,4 } individual subcarrier and { 5 } individual OFDM symbol on { 4,5 } individual subcarrier on carry DMRS groups 1, { 2 } are individual DMRS groups 2 are carried on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 5 } individual OFDM symbol in OFDM symbol, Hold on { 10,11 } individual subcarrier on { 9,10 } individual subcarrier and { 5 } individual OFDM symbol in { 2 } individual OFDM symbol Carry DMRS groups 3, { 1, the 2 } height on { 0,1 } individual subcarrier and { 9 } individual OFDM symbol in { 6 } individual OFDM symbol DMRS groups 4 are carried on carrier wave, the on { 3,4 } the individual subcarrier and { 9 } individual OFDM symbol in { 6 } individual OFDM symbol DMRS groups 5, the individual OFDM symbols of { 6,7 } the individual subcarrier and { 9 } in { 6 } individual OFDM symbol are carried on { 4,5 } individual subcarrier DMRS groups 6, { 9,10 } the individual subcarrier and { 9 } in { 6 } individual OFDM symbol are carried on { 7,8 } individual subcarrier on number Carry DMRS groups 7 on { 10,11 } individual subcarrier in individual OFDM symbol, each DMRS group it is interior using identical precoding or Beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups.

For in each DMRS group, different DMRS ports are multiplexed by the way of FDM and/or frequency domain CDM, when each Two DMRS ports are included in DMRS groups, at this moment using walsh codes carrying out being located at { 2 } and/or { 5 } and/or { 6 } and/or { 9 } In individual OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, walsh codes adopt [1,1], [1, -1]；Comprising more than two DMRS ports in each DMRS group, at this moment using walsh codes come carry out being located at { 2 } and/or { 5 } and/or in { 6 } and/or { 9 } individual OFDM symbol in same OFDM symbol same DMRS groups adjacent four pilot resources units It is more than the multiplexing of two-port on element；Walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1, 1]。

A kind of reference signal processing system of open loop multiple-input and multiple-output mimo system, the system include that open loop DMRS is multiplexed Unit, weighting processing unit；Wherein,

The open loop DMRS Multiplexing Units, in special subframe, using CDM and/or TDM and/or FDM technology, The open loop DMRS of different groups is multiplexed in one or more OFDM symbols in 2nd, 3,5,6,9,10 OFDM symbols；

The weighting processing unit, for using identical or different weights for the open loop DMRS of different groups, carries out phase The weighting answered is processed.

The OFDM symbol for carrying open loop DMRS is { 2,3,9,10 } individual OFDM symbol；Or,

The OFDM symbol for carrying open loop DMRS is { 2,3 } and { 5,6 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,6 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,5,6,10 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,5,6,9 } individual OFDM symbol.

The reference signal processing method of open loop MIMO systems proposed by the present invention and system, realize open loop by DMRS The transmission of MIMO, so as to reduce the extra resource expense that public reference signal pilot tone is brought, e.g., carries out open loop based on DMRS Pilot design, the weights of the precoding weights or beam shaping of network side can not be limited by code book, are greatly improved and are prelisted The degree of accuracy of code or beam forming weight, can be in the base for not increasing UE implementation complexity and test complexity and resource consumption Improve UE performances in an open loop mode on plinth as far as possible.

Description of the drawings

Fig. 1, Fig. 2 are the time division multiplex or time domain spread spectrum general cyclic prefix (NormalCP) 12 of the embodiment of the present invention DMRS group mapping pattern schematic diagrams；

The DMRS group mapping graphs of Fig. 3, Fig. 4 for the time division multiplex or time domain spread spectrum Normal CP 4 of the embodiment of the present invention Sample schematic diagram；

DMRS group mappings of the Fig. 5 to Figure 10 for the time division multiplex or time domain spread spectrum Normal CP 2 of the embodiment of the present invention Pattern schematic diagram；

The DMRS groups of Figure 11,19,15,23 for the frequency division multiplexing or frequency domain spread spectrum Normal CP 2 of the embodiment of the present invention Mapping pattern schematic diagram；

Figure 12,13,16,17,20,21,24,25,27,29,31,33 frequency division multiplexing or frequency domain for the embodiment of the present invention The DMRS group mapping pattern schematic diagrams of spread spectrum Normal CP 4；

Figure 14,18,22,26,28,30,32,34 frequency division multiplexing or frequency domain spread spectrum Normal for the embodiment of the present invention The DMRS group mapping pattern schematic diagrams of CP 8；

Reference signal handling process sketches of the Figure 35 for the open loop MIMO systems of the embodiment of the present invention；

Reference signal processing system figures of the Figure 36 for the open loop MIMO systems of the embodiment of the present invention.

Specific embodiment

In actual applications, it is possible to use CDM and/or TDM and/or FDM technology are multiple in one or more OFDM symbols The open loop demodulated reference signals organized with difference, the open loop demodulated reference signals of different groups are carried out using identical or different weights Process so that Resource Block carries out corresponding weighting process using multiple different weights.Specifically, the weights include prelisting Code weight value and/or beam forming weight, the weighting is processed then to be included：Weighed using the precoding weights and/or beam shaping Value carries out corresponding precoding and/or beam shaping is processed.

Preferably, the OFDM symbol for carrying open loop DMRS can be { 2,3,9,10 } individual OFDM symbol.

Preferably, open loop DMRS can be carried on the 0th to 11 subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol On, wherein identical or different DMRS groups on the 0th to 11 subcarrier, are carried respectively, it is pre- using identical in each DMRS group Coding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably, open loop DMRS can be carried on { 2,3 } and { 9,10 } individual OFDM symbol 0, Isosorbide-5-Nitrae, 5,6,7, 10,11 }, on individual subcarrier, wherein DMRS groups 0 are carried on { 0,4 } individual subcarrier, DMRS groups on { 1,5 } individual subcarrier, are carried 1, DMRS groups 2 are carried on { 6,10 } individual subcarrier, is carried on { 7,11 } individual subcarrier and is adopted in DMRS groups 3, each DMRS group With identical precoding or beam forming weight, identical or different precoding or beam shaping between DMRS groups, is adopted to weigh Value.

Preferably in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, two DMRS ports are included in each DMRS group, at this moment can be carried out using walsh codes respectively positioned at { 2,3 } and/or In { 9,10 } individual OFDM symbol in the two neighboring pilot resource element of same sub-carrier two ports multiplexing, walsh codes can To adopt [1,1], [1, -1].When including in each DMRS group more than two DMRS ports, at this moment can be entered using walsh codes Line position answering more than two ports in four pilot resource elements of same sub-carrier in { 2,3 } and { 9,10 } individual OFDM symbol With walsh codes can adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], or every 2k DMRS groups and 2k+1 DMRS groups are a precoding group, and the different DMRS groups in same precoding group are using identical precoding The weights of different layers carry out precoding, and wherein k is nonnegative integer.

Preferably, open loop DMRS can be carried on { 1,5,7,11 } height of { 2,3 } and { 9,10 } individual OFDM symbol On carrier wave, wherein DMRS groups 0 are carried on { 1,5 } individual subcarrier, DMRS groups 1 on { 7,11 } individual subcarrier, are carried, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight.

Preferably, open loop DMRS can be carried on { 0,5,6,11 } height of { 2,3 } and { 9,10 } individual OFDM symbol On carrier wave, wherein DMRS groups 0 are carried on { 0,5 } individual subcarrier, DMRS groups 1 on { 6,11 } individual subcarrier, are carried, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight.

Preferably in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, two DMRS ports are included in each DMRS group, at this moment can be carried out using walsh codes respectively positioned at { 2,3 } and/or In { 9,10 } individual OFDM symbol in the two neighboring pilot resource element of same sub-carrier two ports multiplexing, walsh codes can To adopt [1,1], [1, -1].When including in each DMRS group more than two DMRS ports, at this moment can be entered using walsh codes Line position answering more than two ports in four pilot resource elements of same sub-carrier in { 2,3 } and { 9,10 } individual OFDM symbol With walsh codes can adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], and/or same Weights of the pilot resources on different pilot sub-carriers in DMRS groups using the different layers of identical precoding, same pilot are carried Weights of the pilot resources on ripple using the identical layer of identical precoding.

Preferably, open loop DMRS can be carried on { 0,4,6,10 } the individual subcarrier and { 9,10 } individual OFDM of { 2,3 } On { 1,5,7,11 } individual subcarrier of symbol, DMRS groups 0 on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier, are carried wherein the, the 6,7,10, 11 } carry on individual subcarrier in DMRS groups 1, each DMRS group and adopt identical precoding or beam forming weight, DMRS groups Between adopt identical or different precoding or beam forming weight.

Preferably in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, two DMRS ports are included in each DMRS group, at this moment can be carried out using walsh codes positioned at { 2,3 } and/or 9, 10 } in individual OFDM symbol in two pilot resource elements of same sub-carrier two ports multiplexing, walsh codes can adopt [1,1], [1, -1].When including in each DMRS group more than two DMRS ports, at this moment can be located at using walsh codes { 0 } individual subcarrier and { 1 } individual subcarrier, { 2,3 } individual OFDM symbols in { 9,10 } individual OFDM symbol in { 2,3 } individual OFDM symbol { 6 } height in { 5 } individual subcarrier, { 2,3 } individual OFDM symbol on number upper { 4 } individual subcarrier and { 9,10 } individual OFDM symbol Carrier wave and { 10 } individual subcarrier and { 9,10 } in { 7 } individual subcarrier, { 2,3 } individual OFDM symbol in { 9,10 } individual OFDM symbol Multiplexing in individual OFDM symbol on { 11 } individual subcarrier in four pilot resource elements more than two ports, walsh codes can be with Using [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].And/or in { 2,3 } individual OFDM symbol { 0 } On individual subcarrier and { 9,10 } individual OFDM symbol, { 1 } individual subcarrier is the code layer group 0 that prelists, in { 2,3 } individual OFDM symbol { 4 } In individual subcarrier and { 9,10 } individual OFDM symbol, { 5 } individual subcarrier prelists code layer group 1 for one, the in { 2,3 } individual OFDM symbol { 6 } in individual subcarrier and { 9,10 } individual OFDM symbol, { 7 } individual subcarrier prelists code layer group 2 for one, in { 2,3 } individual OFDM symbol On { 10 } individual subcarrier and { 9,10 } individual OFDM symbol, { 11 } individual subcarrier is the code layer group 3 that prelists.Positioned at same DMRS Precoding processing is carried out using the weights of the different layers of identical precoding weights between different layers group in group, positioned at same Precoding processing is carried out using the weights of the identical layer of identical precoding weights within different layers group in DMRS groups.

Preferably, the OFDM symbol for carrying open loop DMRS is { 2,3 } and { 5,6 } individual OFDM symbol.

Preferably, open loop DMRS can be carried on the 0th to 11 subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, Identical or different DMRS groups are carried respectively on wherein the 0th to 11 subcarrier, are prelisted using identical in each DMRS group Code or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably, open loop DMRS can be carried on { 2,3 } and { 5,6 } individual OFDM symbol 0, Isosorbide-5-Nitrae, 5,6,7,10, 11 }, on individual subcarrier, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, is held on { 6,7,10,11 } individual subcarrier Carry using identical precoding or beam forming weight in DMRS groups 1, each DMRS group, between DMRS groups, adopt identical or not Same precoding or beam forming weight.

Preferably in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, two DMRS ports are included in each DMRS group, at this moment can be carried out using walsh codes respectively positioned at { 2,3 } and/or In { 5,6 } individual OFDM symbol in the two neighboring pilot resource element of same sub-carrier two ports multiplexing, walsh codes can be with Using [1,1], [1, -1].When including in each DMRS group more than two DMRS ports, at this moment can be carried out using walsh codes It is more than the multiplexing of two ports in four pilot resource elements of same sub-carrier in { 2,3 } and { 5,6 } individual OFDM symbol, Walsh codes can adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], or every 2k DMRS Group and 2k+1DMRS groups be a precoding group, the different DMRS groups in same precoding group use identical precoding different layers Weights carry out precoding, wherein k is nonnegative integer.

Preferably, open loop DMRS can be carried on { 1,5,7,11 } height load of { 2,3 } and { 5,6 } individual OFDM symbol On ripple, wherein DMRS groups 0 are carried on { 1,5 } individual subcarrier, DMRS groups 1, each DMRS on { 7,11 } individual subcarrier, are carried Identical precoding or beam forming weight are adopted in group, identical or different precoding or wave beam between DMRS groups, is adopted Forming weight.

Preferably, open loop DMRS can be carried on { 0,5,6,11 } height load of { 2,3 } and { 5,6 } individual OFDM symbol On ripple, wherein DMRS groups 0 are carried on { 0,5 } individual subcarrier, DMRS groups 1, each DMRS on { 6,11 } individual subcarrier, are carried Identical precoding or beam forming weight are adopted in group, identical or different precoding or wave beam between DMRS groups, is adopted Forming weight.

Preferably in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, two DMRS ports are included in each DMRS group, at this moment can be carried out using walsh codes respectively positioned at { 2,3 } and/or In { 5,6 } individual OFDM symbol in the two neighboring pilot resource element of same sub-carrier two ports multiplexing, walsh codes can be with Using [1,1], [1, -1].When including in each DMRS group more than two DMRS ports, at this moment can be carried out using walsh codes It is more than the multiplexing of two ports in four pilot resource elements of same sub-carrier in { 2,3 } and { 5,6 } individual OFDM symbol, Walsh codes can adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], and/or same DMRS Weights of the pilot resources on different pilot sub-carriers in group using the different layers of identical precoding, in same pilot sub-carrier Pilot resources using identical precoding identical layer weights.

Preferably, open loop DMRS can be carried on { 2,3 } individual OFDM symbol { 0,4,6,10 } individual subcarrier and 5, 6 }, on { 1,5,7,11 } individual subcarrier of individual OFDM symbol, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, the Carry on { 6,7,10,11 } individual subcarrier in DMRS groups 1, each DMRS group and adopt identical precoding or beam shaping to weigh Value, adopts identical or different precoding or beam forming weight between DMRS groups.

Preferably in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, two DMRS ports are included in each DMRS group, at this moment can be carried out using walsh codes positioned at { 2,3 } and/or 5, 6 } in individual OFDM symbol in two pilot resource elements of same sub-carrier two ports multiplexing, walsh codes can using [1, 1], [1, -1].In each DMRS group comprising more than two DMRS ports, at this moment can carrying out being located at using walsh codes 2, 3 } { 0 } individual subcarrier and four pilot resource elements on { 1 } individual subcarrier in { 5,6 } individual OFDM symbol in individual OFDM symbol The upper multiplexing more than two ports, carries out being located at { 4 } individual subcarrier and { 5,6 } individual OFDM symbol in { 2,3 } individual OFDM symbol Multiplexing on upper { 5 } individual subcarrier in four pilot resource elements more than two ports, carries out being located at { 2,3 } individual OFDM symbol Hold more than two in four pilot resource elements on { 7 } individual subcarrier on upper { 6 } individual subcarrier and { 5,6 } individual OFDM symbol The multiplexing of mouth, and carry out being located at { 10 } individual subcarrier and { 11 } in { 5,6 } individual OFDM symbol in { 2,3 } individual OFDM symbol Multiplexing on individual subcarrier in four pilot resource elements more than two ports, walsh codes can adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].And/or { 0 } individual subcarrier and { 5,6 } are individual in { 2,3 } individual OFDM symbol In OFDM symbol, { 1 } individual subcarrier is the code layer group 0 that prelists, and in { 2,3 } individual OFDM symbol, { 4 } individual subcarrier and { 5,6 } are individual In OFDM symbol, { 5 } individual subcarrier prelists code layer group 1 for one, { 6 } individual subcarrier and { 5,6 } in { 2,3 } individual OFDM symbol In individual OFDM symbol, { 7 } individual subcarrier prelists code layer group 2 for one, in { 2,3 } individual OFDM symbol { 10 } individual subcarrier and 5, 6 } in individual OFDM symbol, { 11 } individual subcarrier is the code layer group 3 that prelists.Make between different layers group in same DMRS groups Precoding processing is carried out with the weights of the different layers of identical precoding weights, within the different layers group in same DMRS groups Precoding processing is carried out using the weights of the identical layer of identical precoding weights.

Preferably, open loop DMRS can be carried in { 2,6 } individual OFDM symbol.

Preferably, open loop DMRS can be carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } of OFDM { 2,6 } individual OFDM symbol On individual subcarrier, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, carrying on { 6,7,10,11 } individual subcarrier Identical precoding or beam forming weight are adopted in DMRS groups 1, each DMRS group, using identical or different between DMRS groups Precoding or beam forming weight.

Preferably, open loop DMRS can be carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } of OFDM { 2,6 } individual OFDM symbol On individual subcarrier, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 on { 4,5 } individual subcarrier, are carried, the DMRS groups 2 are carried on { 6,7 } individual subcarrier, is carried in DMRS groups 3, each DMRS group on { 10,11 } individual subcarrier and is adopted phase Same precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably, open loop DMRS can be carried on { 0,1,3,4,7,8,10,11 } height of { 2,6 } individual OFDM symbol On carrier wave, wherein DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, DMRS groups on { 7,8,10,11 } individual subcarrier, are carried 1, identical precoding or beam forming weight are adopted in each DMRS group, is prelisted using identical or different between DMRS groups Code or beam forming weight.

Preferably, open loop DMRS can be carried on { 0,1,3,4,7,8,10,11 } height of { 2,6 } individual OFDM symbol On carrier wave, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1, { 7,8 } on { 3,4 } individual subcarrier, are carried DMRS groups 2 are carried on individual subcarrier, on { 10,11 } individual subcarrier, carries pre- using identical in DMRS groups 3, each DMRS group Coding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably, open loop DMRS can be carried on { 0,1,3,4,6,7,9,10 } height load of { 2 } individual OFDM symbol On ripple and on { 1,2,4,5,7,8,10,11 } individual subcarrier of { 6 } individual OFDM symbol, wherein { 0,1,2,3,4,5 } is individual DMRS groups 0 are carried on subcarrier, is carried in DMRS groups 1, each DMRS group on { 6,7,8,9,10,11 } individual subcarrier and is adopted phase Same precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably, open loop DMRS can be carried on { 0,1,3,4,6,7,9,10 } height load of { 2 } individual OFDM symbol On ripple and on { 1,2,4,5,7,8,10,11 } individual subcarrier of { 6 } individual OFDM symbol, wherein in { 2 } individual OFDM symbol { 0,1 } individual subcarrier and { 6 } individual OFDM symbol on { 1,2 } individual subcarrier on carry DMRS groups 0, { 2 } are individual DMRS groups 1 are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 6 } individual OFDM symbol in OFDM symbol, Carry on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 6 } individual OFDM symbol in { 2 } individual OFDM symbol DMRS groups 2, { 10, the 11 } height on { 9,10 } individual subcarrier and { 6 } individual OFDM symbol in { 2 } individual OFDM symbol Carry on carrier wave in DMRS groups 3, each DMRS group and adopt identical precoding or beam forming weight, between DMRS groups, adopt phase Same or different precodings or beam forming weight.

Preferably in each DMRS group, can be being multiplexed different DMRS by the way of FDM and/or frequency domain CDM Port, when two DMRS ports are included in each DMRS group, at this moment can carry out being located at { 2 } and/or { 6 } using walsh codes In individual OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, walsh codes can using [1, 1], [1, -1].When including in each DMRS group more than two DMRS ports, at this moment can carry out being located at { 2 } using walsh codes And/or in adjacent four pilot resource elements in same DMRS groups of { 6 } the individual OFDM symbol in same OFDM symbol greatly In the multiplexing of two-port.Walsh codes can adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Preferably, open loop DMRS can be carried in { 2,5,6,10 } individual OFDM symbol.

Preferably, open loop DMRS can be carried on OFDM { 2,5,6,10 } individual OFDM symbol 0, Isosorbide-5-Nitrae, 5,6,7, 10,11 }, on individual subcarrier, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, on { 6,7,10,11 } individual subcarrier Carry using identical precoding or beam forming weight in DMRS groups 1, each DMRS group, adopt between DMRS groups it is identical or Different precodings or beam forming weight.

Preferably, open loop DMRS can be carried on OFDM { 2,5,6,10 } individual OFDM symbol 0, Isosorbide-5-Nitrae, 5,6,7, 10,11 }, on individual subcarrier, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups on { 4,5 } individual subcarrier, are carried 1, DMRS groups 2 are carried on { 6,7 } individual subcarrier, is carried on { 10,11 } individual subcarrier and is adopted in DMRS groups 3, each DMRS group With identical precoding or beam forming weight, identical or different precoding or beam shaping between DMRS groups, is adopted to weigh Value.

Preferably, open loop DMRS can be carried on { 2,5,6,10 } individual OFDM symbol 0,1,3,4,7,8,10, 11 }, on individual subcarrier, wherein DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, hold on { 7,8,10,11 } individual subcarrier Carry using identical precoding or beam forming weight in DMRS groups 1, each DMRS group, between DMRS groups, adopt identical or not Same precoding or beam forming weight.

Preferably, open loop DMRS can be carried on { 2,5,6,10 } individual OFDM symbol 0,1,3,4,7,8,10, 11 }, on individual subcarrier, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 on { 3,4 } individual subcarrier, are carried, DMRS groups 2 are carried on { 7,8 } individual subcarrier, is carried in DMRS groups 3, each DMRS group on { 10,11 } individual subcarrier and is adopted Identical precoding or beam forming weight, adopt identical or different precoding or beam shaping to weigh between DMRS groups Value.

Preferably, open loop DMRS can be carried on { 0,1,3,4,6,7,9,10 } height of { 2,6 } individual OFDM symbol On carrier wave and on { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,10 } individual OFDM symbol, wherein the 0,1,2,3,4, 5 } DMRS groups 0 are carried on individual subcarrier, carries on { 6,7,8,9,10,11 } individual subcarrier and adopt in DMRS groups 1, each DMRS group With identical precoding or beam forming weight, identical or different precoding or beam shaping between DMRS groups, is adopted to weigh Value.

Preferably, open loop DMRS can be carried on { 0,1,3,4,6,7,9,10 } height of { 2,6 } individual OFDM symbol On carrier wave and on { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,10 } individual OFDM symbol, wherein { 2 } individual OFDM symbols DMRS groups 0, { 2 } are carried on { 1,2 } individual subcarrier on { 0,1 } individual subcarrier and { 5 } individual OFDM symbol on number DMRS groups are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 5 } individual OFDM symbol in individual OFDM symbol 1, hold on { 7,8 } the individual subcarrier on { 6,7 } individual subcarrier and { 5 } individual OFDM symbol in { 2 } individual OFDM symbol DMRS groups 2 are carried, { 10,11 } on { 9,10 } individual subcarrier and { 5 } individual OFDM symbol in { 2 } individual OFDM symbol are individual DMRS groups 3 are carried on subcarrier, on { 0,1 } the individual subcarrier and { 10 } individual OFDM symbol in { 6 } individual OFDM symbol DMRS groups 4, { 3,4 } the individual subcarrier and { 10 } individual OFDM in { 6 } individual OFDM symbol are carried on { 1,2 } individual subcarrier DMRS groups 5 are carried on { 4,5 } individual subcarrier on symbol, { 6,7 } individual subcarrier in { 6 } individual OFDM symbol and the { 10 } DMRS groups 6 are carried on { 7,8 } the individual subcarrier in individual OFDM symbol, { 9,10 } in { 6 } individual OFDM symbol are individual Carry in DMRS groups 7, each DMRS group on { 10,11 } individual subcarrier on subcarrier and { 10 } individual OFDM symbol and adopt phase Same precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably in each DMRS group, can be being multiplexed different DMRS by the way of FDM and/or frequency domain CDM Port, when two DMRS ports are included in each DMRS group, at this moment can carry out being located at { 2 } and/or { 5 } using walsh codes And/or in { 6 } and/or { 10 } individual OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, Walsh codes can adopt [1,1], [1, -1].When including more than two DMRS ports in each DMRS group, at this moment can adopt Walsh codes are same in same OFDM symbol in { 2 } and/or { 5 } and/or { 6 } and/or { 10 } individual OFDM symbol to carry out It is more than the multiplexing of two-port in adjacent four pilot resource elements of individual DMRS groups.Walsh codes can adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Preferably, open loop DMRS can be carried in { 2,5,6,9 } individual OFDM symbol.

Preferably, open loop DMRS can be carried on OFDM { 2,5,6,9 } individual OFDM symbol 0, Isosorbide-5-Nitrae, 5,6,7, 10,11 }, on individual subcarrier, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, on { 6,7,10,11 } individual subcarrier Carry using identical precoding or beam forming weight in DMRS groups 1, each DMRS group, adopt between DMRS groups it is identical or Different precodings or beam forming weight.

Preferably, open loop DMRS can be carried on OFDM { 2,5,6,9 } individual OFDM symbol 0, Isosorbide-5-Nitrae, 5,6,7, 10,11 }, on individual subcarrier, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups on { 4,5 } individual subcarrier, are carried 1, DMRS groups 2 are carried on { 6,7 } individual subcarrier, is carried on { 10,11 } individual subcarrier and is adopted in DMRS groups 3, each DMRS group With identical precoding or beam forming weight, identical or different precoding or beam shaping between DMRS groups, is adopted to weigh Value.

Preferably, open loop DMRS can be carried on { 0,1,3,4,7,8,10,11 } of { 2,5,6,9 } individual OFDM symbol On individual subcarrier, wherein DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, carry on { 7,8,10,11 } individual subcarrier Identical precoding or beam forming weight are adopted in DMRS groups 1, each DMRS group, using identical or different between DMRS groups Precoding or beam forming weight.

Preferably, open loop DMRS can be carried on { 0,1,3,4,7,8,10,11 } of { 2,5,6,9 } individual OFDM symbol On individual subcarrier, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 on { 3,4 } individual subcarrier, are carried, the DMRS groups 2 are carried on { 7,8 } individual subcarrier, is carried in DMRS groups 3, each DMRS group on { 10,11 } individual subcarrier and is adopted phase Same precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably, open loop DMRS can be carried on { 0,1,3,4,6,7,9,10 } height of { 2,6 } individual OFDM symbol On carrier wave and on { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,9 } individual OFDM symbol, wherein the 0,1,2,3,4, 5 } DMRS groups 0 are carried on individual subcarrier, carries on { 6,7,8,9,10,11 } individual subcarrier and adopt in DMRS groups 1, each DMRS group With identical precoding or beam forming weight, identical or different precoding or beam shaping between DMRS groups, is adopted to weigh Value.

Preferably, open loop DMRS can be carried on { 0,1,3,4,6,7,9,10 } height of { 2,6 } individual OFDM symbol On carrier wave and on { 1,2,4,5,7,8,10,11 } individual subcarrier of { 5,9 } individual OFDM symbol, wherein { 2 } individual OFDM symbols DMRS groups 0, { 2 } are carried on { 1,2 } individual subcarrier on { 0,1 } individual subcarrier and { 5 } individual OFDM symbol on number DMRS groups are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 5 } individual OFDM symbol in individual OFDM symbol 1, hold on { 7,8 } the individual subcarrier on { 6,7 } individual subcarrier and { 5 } individual OFDM symbol in { 2 } individual OFDM symbol DMRS groups 2 are carried, { 10,11 } on { 9,10 } individual subcarrier and { 5 } individual OFDM symbol in { 2 } individual OFDM symbol are individual DMRS groups 3 are carried on subcarrier, the on { 0,1 } the individual subcarrier and { 9 } individual OFDM symbol in { 6 } individual OFDM symbol DMRS groups 4, the individual OFDM symbols of { 3,4 } the individual subcarrier and { 9 } in { 6 } individual OFDM symbol are carried on { 1,2 } individual subcarrier DMRS groups 5, { 6,7 } the individual subcarrier and { 9 } in { 6 } individual OFDM symbol are carried on { 4,5 } individual subcarrier on number DMRS groups 6 are carried on { 7,8 } individual subcarrier in individual OFDM symbol, { 9, the 10 } height in { 6 } individual OFDM symbol is carried Carry in DMRS groups 7, each DMRS group on { 10,11 } individual subcarrier on ripple and { 9 } individual OFDM symbol and adopt identical Precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

Preferably in each DMRS group, can be being multiplexed different DMRS by the way of FDM and/or frequency domain CDM Port, when two DMRS ports are included in each DMRS group, at this moment can carry out being located at { 2 } and/or { 5 } using walsh codes And/or in { 6 } and/or { 9 } individual OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, Walsh codes can adopt [1,1], [1, -1].When including more than two DMRS ports in each DMRS group, at this moment can adopt Walsh codes are same in same OFDM symbol in { 2 } and/or { 5 } and/or { 6 } and/or { 9 } individual OFDM symbol to carry out It is more than the multiplexing of two-port in adjacent four pilot resource elements of DMRS groups.Walsh codes can adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

(wherein, 0≤i≤11) represent i-th OFDM symbol it should be noted that { i } individual OFDM symbol.Institute of the present invention The group # or port numbering for using is intended merely to distinguish different groups and port, and the numbering of restriction group and port is not suitable Sequence.

For a better understanding of the present invention, the present invention is further described with specific embodiment below in conjunction with the accompanying drawings.

Embodiment one：

Fig. 1 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 12 DMRS groups.

Open loop DMRS may map to { 2,3,9,10 } individual OFDM symbol.If RE (the resources that DMRS groups 0 are taken to group 11 Element) respectively (to 11), wherein x represents the subcarrier sequence number index in a RB (Resource Block), y tables to x0 to 11, y0 for position Show the index of OFDM symbol.{ x (m), y (m) }=m, (2,3,9,10) }, wherein m=0 to 11.

Optionally, in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, different DMRS groups can adopt the weights of identical or different precoding, different DMRS groups adopt identical The weights of the different layers of precoding weights, identical DMRS group adopt identical precoding weights and/or identical precoding weights The weights of identical layer.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment two：

Fig. 2 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 12 DMRS groups.

Open loop DMRS may map to { 2,3,5,6 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 11 Wei (to 11), wherein x represent the subcarrier sequence number index in a RB to x0 to 11, y0, and y represents the index of OFDM symbol.{x (m), y (m) }=m, (2,3,5,6) }, wherein m=0 to 11.

Optionally, in each DMRS group, can be so that different DMRS ends be multiplexed by the way of TDM and/or CDM Mouthful, when two DMRS ports are included in each DMRS, at this moment can be carried out using walsh codes positioned at { 2,3,5,6 } individual OFDM On symbol, in the two neighboring pilot resource element of same sub-carrier, the multiplexing walsh codes of two ports can adopt [1,1], [1, -1].Different DMRS groups can adopt the weights and/or different DMRS groups of identical and/or different precoding to adopt phase With the weights of the different layers of precoding weights, identical DMRS groups adopt identical precoding weights and/or identical precoding weights The weights of identical layer.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment three：

Fig. 3 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,3,5,6 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,4), (2,3,5,6) }, { x1, y1 }=(1,5), (2,3,5,6) }, { x2, y2 }=(6, 10), (2,3,5,6) }, { x3, y3 }=(7,11), (2,3,5,6) }, optionally, in each DMRS group, can adopt Being multiplexed different DMRS ports, different DMRS groups can be prelisted the mode of TDM and/or CDM using identical and/or different Weights of the weights and/or different DMRS groups of code using the different layers of identical precoding weights, identical DMRS group adopt phase With precoding weights and/or the weights of the identical layer of identical precoding weights.The interior resource of same DMRS groups is multiplexed not using CDM With during DMRS port can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Example IV：

Fig. 4 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,3,9,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,4), (2,3,9,10) }, { x1, y1 }=(1,5), (2,3,9,10) }, { x2, y2 }= (6,10), (2,3,9,10) }, { x3, y3 }=(7, and 11) (2,3,9,10) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of TDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With identical precoding weights and/or the weights of the identical layer of identical precoding weights.Resource in same DMRS groups is multiplexed using CDM Different DMRS ports when can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1, 1, -1], [1, -1, -1,1].

Embodiment five：

Fig. 5 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,3,5,6 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 1 Wei (to 1), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,5), (2,3,5,6) }, { x1, y1 }=(7, and 11) (2,3,5,6) }, optionally, for every In individual DMRS groups, can be so that different DMRS ports be multiplexed by the way of TDM and/or CDM, different DMRS groups can be adopted The weights of identical and/or different precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, Identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.It is same using CDM multiplexings In one DMRS groups during the different DMRS ports of resource can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, - 1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment six：

Fig. 6 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,3,9,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 1 Wei (to 1), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,5), (2,3,9,10) }, { x1, y1 }=(7,11), (2,3,9,10) }, optionally, for In each DMRS group, can be so that different DMRS ports be multiplexed by the way of TDM and/or CDM, different DMRS groups can be adopted The power of the different layers of identical precoding weights is adopted with the weights and/or different DMRS groups of identical and/or different precoding Value, identical DMRS group adopt the weights or identical pre- of the identical layer of identical precoding weights and/or identical precoding weights The weights of the different layers of coding weights.Can adopt when being multiplexed the different DMRS ports of resource in same DMRS groups using CDM Walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment seven：

Fig. 7 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,3,5,6 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 1 Wei (to 1), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,4), (2,3) }, (and 1,5), (5,6) } }, { x1, y1 }=(1,5), (2,3) }, (7, 11), (5,6) } }, optionally, in each DMRS group, can be so that different DMRS be multiplexed by the way of TDM and/or CDM Port, different DMRS groups can adopt the weights and/or different DMRS groups of identical and/or different precoding using identical The weights of the different layers of precoding weights, identical DMRS group adopt identical precoding weights and/or identical precoding weights The weights of identical layer.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment eight：

Fig. 8 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,3,9,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 1 Wei (to 1), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,4), (2,3) }, (and 1,5), (9,10) } }, { x1, y1 }=(1,5), (2,3) }, (7, 11), (9,10) } }, it is optionally, interior for each DMRS group, can be different to be multiplexed by the way of TDM and/or CDM DMRS port, different DMRS groups can adopt the weights and/or different DMRS groups of identical and/or different precoding to adopt The weights of the different layers of identical precoding weights, identical DMRS group is using identical precoding weights and/or the identical code weight that prelists The weights of the identical layer of value.When the different DMRS ports of resource in same DMRS groups are multiplexed using CDM can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment nine：

Fig. 9 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,3,5,6 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 1 Wei (to 1), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,5), (2,3,5,6) }, { x1, y1 }=(6,11), (2,3,5,6) }, optionally, for every In individual DMRS groups, can be so that different DMRS ports be multiplexed by the way of TDM and/or CDM, different DMRS groups can be adopted The weights of identical and/or different precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, Identical DMRS group adopts the weights or identical precoding of the identical layer of identical precoding weights and/or identical precoding weights The weights of the different layers of weights.When the different DMRS ports of resource in same DMRS groups are multiplexed using CDM can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment ten：

Figure 10 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,3,9,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 1 Wei (to 1), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,5), (2,3,9,10) }, { x1, y1 }=(6,11), (2,3,9,10) }, optionally, for In each DMRS group, can be so that different DMRS ports be multiplexed by the way of TDM and/or CDM, different DMRS groups can be adopted The power of the different layers of identical precoding weights is adopted with the weights and/or different DMRS groups of identical and/or different precoding Value, identical DMRS group adopt the weights or identical pre- of the identical layer of identical precoding weights and/or identical precoding weights The weights of the different layers of coding weights.Can adopt when being multiplexed the different DMRS ports of resource in same DMRS groups using CDM Walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 11：

Figure 11 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 1 takes (to 1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents OFDM symbol Index.{ x0, y0 }=(0, Isosorbide-5-Nitrae, 5), (2,6) }, { x1, y1 }=(6,7,10,11), (2,6) }, optionally, for each In DMRS groups, can be so that different DMRS ports be multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt phase With and/or different precoding weights and/or different DMRS groups using the different layers of identical precoding weights weights, phase With DMRS groups using identical precoding weights and/or the weights or the identical code weight that prelists of the identical layer of identical precoding weights The weights of the different layers of value.When the different DMRS ports of resource in same DMRS groups are multiplexed using CDM can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 12：

Figure 12 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0, Isosorbide-5-Nitrae, 5), (2,5) }, { x1, y1 }=(6,7,10,11), (2,5) }, { x2, y2 }= (0, Isosorbide-5-Nitrae, 5), (6,10) }, { x3, y3 }=(6,7,10,11), (6,10) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With the different layers of identical precoding weights and/or the weights or identical precoding weights of the identical layer of identical precoding weights Weights.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or Person [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 13：

Figure 13 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 3 takes (to 3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents OFDM symbol Index.{ x0, y0 }=(0,1), (2,6) }, { x1, y1 }=(4,5), (2,6) }, { x2, y2 }=(6,7), (2,6) }, { x3, y3 }=(10,11), (2,6) }, optionally, in each DMRS group, can with by the way of FDM and/or CDM come The different DMRS ports of multiplexing, different DMRS groups can adopt weights of identical and/or different precoding and/or different Weights of the DMRS groups using the different layers of identical precoding weights, identical DMRS group adopt identical precoding weights and/or phase With the weights of the different layers of the weights or identical precoding weights of the identical layer of precoding weights.It is multiplexed using CDM same In DMRS groups during the different DMRS ports of resource can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, - 1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 14：

Figure 14 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1), (2,5) }, { x1, y1 }=(4,5), (2,5) }, { x2, y2 }=(6,7), (2, 5) }, { x3, y3 }=(10,11), (2,5) }, { x4, y4 }=(0,1), (6,10) }, { x5, y5 }=(4,5), (6,10) } { x6, y6 }=(6,7), (6,10) }, { x7, y7 }=(10,11), (6,10) }, it is optionally, interior for each DMRS group, can Different DMRS ports are multiplexed with by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different Precoding weights and/or different DMRS groups using identical precoding weights different layers weights, identical DMRS group Using identical precoding weights and/or the different layers of the weights or identical precoding weights of the identical layer of identical precoding weights Weights.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1, -1] Or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 15：

Figure 15 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 1 takes (to 1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents OFDM symbol Index.{ x0, y0 }=(0,1,3,4), (2,6) }, { x1, y1 }=(7,8,10,11), (2,6) }, optionally, for each In DMRS groups, can be so that different DMRS ports be multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt phase With and/or different precoding weights and/or different DMRS groups using the different layers of identical precoding weights weights, phase With DMRS groups using identical precoding weights and/or the weights or the identical code weight that prelists of the identical layer of identical precoding weights The weights of the different layers of value.When the different DMRS ports of resource in same DMRS groups are multiplexed using CDM can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 16：

Figure 16 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1,3,4), (2,5) }, { x1, y1 }=(7,8,10,11), (2,5) }, { x2, y2 }= (0,1,3,4), (6,10) }, { x3, y3 }=(7,8,10,11), (6,10) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With the different layers of identical precoding weights and/or the weights or identical precoding weights of the identical layer of identical precoding weights Weights.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or Person [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 17：

Figure 17 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 3 takes (to 3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents OFDM symbol Index.{ x0, y0 }=(0,1), (2,6) }, { x1, y1 }=(3,4), (2,6) }, { x2, y2 }=(7,8), (2,6) }, { x3, y3 }=(10,11), (2,6) }, optionally, in each DMRS group, can with by the way of FDM and/or CDM come The different DMRS ports of multiplexing, different DMRS groups can adopt weights of identical and/or different precoding and/or different Weights of the DMRS groups using the different layers of identical precoding weights, identical DMRS group adopt identical precoding weights and/or phase With the weights of the different layers of the weights or identical precoding weights of the identical layer of precoding weights.It is multiplexed using CDM same In DMRS groups during the different DMRS ports of resource can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, - 1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 18

Figure 18 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1), (2,5) }, { x1, y1 }=(3,4), (2,5) }, { x2, y2 }=(7,8), (2, 5) }, { x3, y3 }=(10,11), (2,5) }, { x4, y4 }=(0,1), (6,10) }, { x5, y5 }=(3,4), (6,10) } { x6, y6 }=(7,8), (6,10) }, { x7, y7 }=(10,11), (6,10) }, it is optionally, interior for each DMRS group, can Different DMRS ports are multiplexed with by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different Precoding weights and/or different DMRS groups using identical precoding weights different layers weights, identical DMRS group Using identical precoding weights and/or the different layers of the weights or identical precoding weights of the identical layer of identical precoding weights Weights.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1, -1] Or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 19：

Figure 19 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 1 takes (to 1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents OFDM symbol Index.{ x0, y0 }=(1,2,4,5), (2,6) }, { x1, y1 }=(7,8,10,11), (2,6) }, optionally, for each In DMRS groups, can be so that different DMRS ports be multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt phase With and/or different precoding weights and/or different DMRS groups using the different layers of identical precoding weights weights, phase With DMRS groups using identical precoding weights and/or the weights or the identical code weight that prelists of the identical layer of identical precoding weights The weights of the different layers of value.When the different DMRS ports of resource in same DMRS groups are multiplexed using CDM can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 20：

Figure 20 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,2,4,5), (2,5) }, { x1, y1 }=(7,8,10,11), (2,5) }, { x2, y2 }= (1,2,4,5), (6,10) }, { x3, y3 }=(7,8,10,11), (6,10) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With the different layers of identical precoding weights and/or the weights or identical precoding weights of the identical layer of identical precoding weights Weights.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or Person [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 21：

Figure 21 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 3 takes (to 3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents OFDM symbol Index.{ x0, y0 }=(1,2), (2,6) }, { x1, y1 }=(4,5), (2,6) }, { x2, y2 }=(7,8), (2,6) }, { x3, y3 }=(10,11), (2,6) }, optionally, in each DMRS group, can with by the way of FDM and/or CDM come The different DMRS ports of multiplexing, different DMRS groups can adopt weights of identical and/or different precoding and/or different Weights of the DMRS groups using the different layers of identical precoding weights, identical DMRS group adopt identical precoding weights and/or phase With the weights of the different layers of the weights or identical precoding weights of the identical layer of precoding weights.It is multiplexed using CDM same In DMRS groups during the different DMRS ports of resource can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, - 1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 22：

Figure 22 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,2), (2,5) }, { x1, y1 }=(4,5), (2,5) }, { x2, y2 }=(7,8), (2, 5) }, { x3, y3 }=(10,11), (2,5) }, { x4, y4 }=(1,2), (6,10) }, { x5, y5 }=(4,5), (6,10) } { x6, y6 }=(7,8), (6,10) }, { x7, y7 }=(10,11), (6,10) }, it is optionally, interior for each DMRS group, can Different DMRS ports are multiplexed with by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different Precoding weights and/or different DMRS groups using identical precoding weights different layers weights, identical DMRS group Using identical precoding weights and/or the different layers of the weights or identical precoding weights of the identical layer of identical precoding weights Weights.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1, -1] Or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 23：

Figure 23 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 2 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 1 takes (to 1), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 1, y0, and y represents OFDM symbol Index.{ x0, y0 }=(0,1,3,4), 2 }, (1,2,4,5), 6 } }, { x1, y1 }=(6,7,9,10), 2 }, (7,8, 10,11), 6 } }, optionally, in each DMRS group, can be so that different DMRS be multiplexed by the way of FDM and/or CDM Port, different DMRS groups can adopt the weights and/or different DMRS groups of identical and/or different precoding using identical The weights of the different layers of precoding weights, identical DMRS group adopt identical precoding weights and/or identical precoding weights The weights of the different layers of the weights of identical layer or identical precoding weights.The interior resource of same DMRS groups is multiplexed not using CDM With during DMRS port can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 24：

Figure 24 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1,3,4), 2 }, (1,2,4,5), 5 } }, { x1, y1 }=(6,7,9,10), 2 }, (7, 8,10,11), 5 } }, { x2, y2 }=(0,1,3,4), 6 }, (1,2,4,5), 10 } }, { x1, y1 }=(6,7,9,10), 6 }, { (7,8,10,11), 10 } }, optionally, in each DMRS group, can be being multiplexed by the way of FDM and/or CDM Different DMRS ports, different DMRS groups can adopt the weights and/or different DMRS of identical and/or different precoding Weights of the group using the different layers of identical precoding weights, identical DMRS group is using identical precoding weights and/or identical pre- The weights of the different layers of the weights or identical precoding weights of the identical layer of coding weights.Same DMRS groups are multiplexed using CDM During the different DMRS ports of interior resource can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 25：

Figure 25 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,6 } individual OFDM symbol.If DMRS groups 0 are respectively to the RE positions that group 3 takes (to 3), wherein x represents the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents OFDM symbol Index.{ x0, y0 }=(0,1), 2 }, (1,2), 6 } }, { x1, y1 }=(3,4), 2 }, (4,5), 6 }, { x2, y2 }= (6,7), 2 }, (7,8), 6 }, { x3, y3 }=(9,10), 2 }, (10,11), 6 } it is optional, it is interior for each DMRS group, Can be to be multiplexed different DMRS ports by the way of FDM and/or CDM, different DMRS groups can be using identical and/or not With precoding weights and/or different DMRS groups using identical precoding weights different layers weights, identical DMRS Group is using identical precoding weights and/or the weights or the difference of identical precoding weights of the identical layer of identical precoding weights The weights of layer.Can be adopted when the different DMRS ports of resource in same DMRS groups are multiplexed using CDM walsh codes [1,1], [1 ,- 1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 26：

Figure 26 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,10 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1), 2 }, (1,2), 5 } }, { x1, y1 }=(3,4), 2 }, (4,5), 5 } }, x2, Y2 }=(6,7), 2 }, (7,8), 5 } }, { x3, y3 }=(9,10), 2 }, (10,11), 5 } }, { x4, y4 }=(0, 1), 6 }, (1,2), 10 } }, { x5, y5 }={ { (3,4), 6 }, (4,5), 10 } }, { x6, y6 }=(6,7), 6 }, (7,8) 10 } }, { x7, y7 }={ { (9,10), 6 }, { (10,11), 10 } } it is optional, in each DMRS group, can using FDM with/ Or the mode of CDM, being multiplexed different DMRS ports, different DMRS groups can adopt the power of identical and/or different precoding Value and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to prelist using identical The weights of the different layers of the weights of the identical layer of code weight value and/or identical precoding weights or identical precoding weights.Using CDM when being multiplexed the different DMRS ports of resource in same DMRS groups can using walsh codes [1,1], [1, -1] or [1,1,1, 1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 27：

Figure 27 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,2,4,5), (2,5) }, { x1, y1 }=(7,8,10,11), (2,5) }, { x2, y2 }= (1,2,4,5), (6,9) }, { x3, y3 }=(7,8,10,11), (6,9) }, optionally, in each DMRS group, can adopt It is multiplexed different DMRS ports with the mode of FDM and/or CDM, different DMRS groups can adopt identical and/or different pre- The weights of coding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt The power of the different layers of the weights of the identical layer of identical precoding weights and/or identical precoding weights or identical precoding weights Value.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 28：

Figure 28 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,2), (2,5) }, { x1, y1 }=(4,5), (2,5) }, { x2, y2 }=(7,8), (2, 5) }, { x3, y3 }=(10,11), (2,5) }, { x4, y4 }=(1,2), (6,9) }, { x5, y5 }=(4,5), (6,9) }, { x6, y6 }=(7,8), (6,9) }, { x7, y7 }=(10,11), (6,9) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With the different layers of identical precoding weights and/or the weights or identical precoding weights of the identical layer of identical precoding weights Weights.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or Person [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 29：

Figure 29 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1,3,4), (2,5) }, { x1, y1 }=(7,8,10,11), (2,5) }, { x2, y2 }= (0,1,3,4), (6,9) }, { x3, y3 }=(7,8,10,11), (6,9) }, optionally, in each DMRS group, can adopt It is multiplexed different DMRS ports with the mode of FDM and/or CDM, different DMRS groups can adopt identical and/or different pre- The weights of coding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt The power of the different layers of the weights of the identical layer of identical precoding weights and/or identical precoding weights or identical precoding weights Value.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 30：

Figure 30 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1), (2,5) }, { x1, y1 }=(3,4), (2,5) }, { x2, y2 }=(7,8), (2, 5) }, { x3, y3 }=(10,11), (2,5) }, { x4, y4 }=(0,1), (6,9) }, { x5, y5 }=(3,4), (6,9) }, { x6, y6 }=(7,8), (6,9) }, { x7, y7 }=(10,11), (6,9) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With the different layers of identical precoding weights and/or the weights or identical precoding weights of the identical layer of identical precoding weights Weights.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or Person [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 31：

Figure 31 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,2,4,5), (2,5) }, { x1, y1 }=(7,8,10,11), (2,5) }, { x2, y2 }= (1,2,4,5), (6,9) }, { x3, y3 }=(7,8,10,11), (6,9) }, optionally, in each DMRS group, can adopt It is multiplexed different DMRS ports with the mode of FDM and/or CDM, different DMRS groups can adopt identical and/or different pre- The weights of coding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt The power of the different layers of the weights of the identical layer of identical precoding weights and/or identical precoding weights or identical precoding weights Value.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 32：

Figure 32 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(1,2), (2,5) }, { x1, y1 }=(4,5), (2,5) }, { x2, y2 }=(7,8), (2, 5) }, { x3, y3 }=(10,11), (2,5) }, { x4, y4 }=(1,2), (6,9) }, { x5, y5 }=(4,5), (6,9) }, { x6, y6 }=(7,8), (6,9) }, { x7, y7 }=(10,11), (6,9) }, optionally, in each DMRS group, can be with Different DMRS ports are multiplexed by the way of FDM and/or CDM, different DMRS groups can adopt identical and/or different The weights of precoding and/or different DMRS groups adopt the weights of the different layers of identical precoding weights, identical DMRS group to adopt With the different layers of identical precoding weights and/or the weights or identical precoding weights of the identical layer of identical precoding weights Weights.When being multiplexed the different DMRS ports of resource in same DMRS groups using CDM can using walsh codes [1,1], [1, -1] or Person [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Embodiment 33：

Figure 33 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 4 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 3 Wei (to 3), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 3, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1,3,4), 2 }, (1,2,4,5), 5 } }, { x1, y1 }=(6,7,9,10), 2 }, (7, 8,10,11), 5 } }, { x2, y2 }=(0,1,3,4), 6 }, (1,2,4,5), 9 } }, { x1, y1 }=(6,7,9,10), 6 }, { (7,8,10,11), 9 } }, optionally, in each DMRS group, can be being multiplexed difference by the way of FDM and/or CDM DMRS port, different DMRS groups can adopt the weights and/or different DMRS groups of identical and/or different precoding adopt With the weights of the different layers of identical precoding weights, identical DMRS group is using identical precoding weights and/or identical precoding The weights of the different layers of the weights of the identical layer of weights or identical precoding weights.Same DMRS groups are multiplexed using CDM domestic-investment During the different DMRS ports in source can adopt walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1, 1, -1], [1, -1, -1,1].

Embodiment 34：

Figure 34 gives the open loop DMRS patterns of one group of pilot tone in a subframe, including 8 DMRS groups.

Open loop DMRS may map to { 2,5,6,9 } individual OFDM symbol.If the RE positions point that DMRS groups 0 are taken to group 7 Wei (to 7), wherein x represent the index of the relative subcarrier sequence number OFDM symbol in a RB to x0 to 7, y0, and y represents that OFDM is accorded with Number index.{ x0, y0 }=(0,1), 2 }, (1,2), 5 } }, { x1, y1 }=(3,4), 2 }, (4,5), 5 } }, x2, Y2 }=(6,7), 2 }, (7,8), 5 } }, { x3, y3 }=(9,10), 2 }, (10,11), 5 } }, { x4, y4 }=(0, 1), 6 }, (1,2), 9 } }, { x5, y5 }={ { (3,4), 6 }, (4,5), 9 } }, { x6, y6 }=(6,7), 6 }, (7,8) 9 } }, { x7, y7 }={ { (9,10), 6 }, { (10,11), 9 } } it is optional, in each DMRS group, can using FDM and/or Being multiplexed different DMRS ports, different DMRS groups can adopt the weights of identical and/or different precoding to the mode of CDM And/or different DMRS groups, using the weights of the different layers of identical precoding weights, identical DMRS group adopts identical precoding The weights of the different layers of the weights of the identical layer of weights and/or identical precoding weights or identical precoding weights.Using CDM When being multiplexed the different DMRS ports of resource same DMRS groups Nei can using walsh codes [1,1], [1, -1] or [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

Understand with reference to the various embodiments described above, the present invention processes the operation thinking of the reference signal of open loop MIMO systems can be with table Show flow process as shown in figure 35, the flow process is comprised the following steps：

Step 3501：In special subframe, using CDM and/or TDM and/or FDM technology, at the 2nd, 3,5,6,9,10 The open loop DMRS of different groups is multiplexed in one or more OFDM symbols in OFDM symbol.

Step 3502：Identical or different weights are used for the open loop DMRS of different groups, corresponding weighting process is carried out. Specifically, the weights include precoding weights and/or beam forming weight, and the weighting is processed then to be included：Using described Precoding weights and/or beam forming weight carry out corresponding precoding and/or beam shaping is processed.

In order to ensure that the various embodiments described above and operation thinking smoothly can be realized, as shown in figure 36 setting can be carried out Put.Referring to Figure 36, reference signal processing system figures of the Figure 36 for the open loop MIMO systems of the embodiment of the present invention, the system include phase Open loop DMRS Multiplexing Units even, weighting processing unit.

In practical application, open loop DMRS Multiplexing Units can be in special subframe, using CDM and/or TDM and/or FDM Technology, is multiplexed the open loop DMRS of different groups in one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbols. Weighting processing unit can then be directed to the open loop DMRS of different groups and use identical or different weights, carry out at corresponding weighting Reason.

It is visible in sum, either method or system, at the reference signal of open loop MIMO systems proposed by the present invention Reason method, carries out the pilot design of open loop based on DMRS, and the weights of the precoding weights or beam shaping of network side can be with Do not limited by code book, the degree of accuracy of precoding or beam forming weight is greatly improved, complexity can be realized UE is not increased UE performances in an open loop mode are improved as far as possible on the basis of degree and test complexity and resource consumption.

The above, only presently preferred embodiments of the present invention is not intended to limit protection scope of the present invention.

Claims (20)

1. a kind of reference signal processing method of open loop multiple-input and multiple-output mimo system, it is characterised in that the method includes：

In special subframe, using CDM and/or TDM and/or FDM technology, in the 2nd, 3,5,6,9,10 OFDM symbols The open loop DMRS of the different groups of multiplexing in individual or multiple OFDM symbols；Identical or different power is used for the open loop DMRS of different groups Value, carries out corresponding weighting process；

Wherein, the OFDM symbol for carrying open loop DMRS is { 2,3,9,10 } individual OFDM symbol；Or,

The OFDM symbol for carrying open loop DMRS is { 2,3 } and { 5,6 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,6 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,5,6,10 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,5,6,9 } individual OFDM symbol.

2. method according to claim 1, it is characterised in that

Open loop DMRS is carried on the 0th to 11 subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, wherein the 0th to 11 Carry identical or different DMRS groups on subcarrier respectively, in each DMRS group, adopt identical precoding or beam shaping Weights, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, DMRS groups 0 are carried wherein on { 0,4 } individual subcarrier, DMRS groups 1 on { 1,5 } individual subcarrier, are carried, { 6,10 } height is carried DMRS groups 2 are carried on ripple, DMRS groups 3 on { 7,11 } individual subcarrier, are carried, each DMRS group it is interior using identical precoding or Person's beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups.

3. method according to claim 2, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, when in each DMRS group Comprising two DMRS ports, at this moment using walsh codes carrying out respectively being located at phase in { 2,3 } and/or { 9,10 } individual OFDM symbol With the multiplexing of two ports in the two neighboring pilot resource element of subcarrier, walsh codes adopt [1,1], [1, -1]；When each Comprising more than two DMRS ports in DMRS groups, at this moment using walsh codes carrying out being located at { 2,3 } and { 9,10 } individual OFDM symbol It is more than the multiplexing of two ports in four pilot resource elements of upper same sub-carrier, walsh codes adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], or every 2k DMRS groups and 2k+1 DMRS groups are a precoding Group, the different DMRS groups in same precoding group carry out precoding using the weights of the different layers of identical precoding, and wherein k is non- Negative integer.

4. method according to claim 1, it is characterised in that

Open loop DMRS is carried on { 1,5,7,11 } individual subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, wherein the 1, 5 } DMRS groups 0 are carried on individual subcarrier, carries in DMRS groups 1, each DMRS group on { 7,11 } individual subcarrier and adopt identical Precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,5,6,11 } individual subcarrier of { 2,3 } and { 9,10 } individual OFDM symbol, wherein the 0, 5 } DMRS groups 0 are carried on individual subcarrier, carries in DMRS groups 1, each DMRS group on { 6,11 } individual subcarrier and adopt identical Precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

5. method according to claim 4, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, when in each DMRS group Comprising two DMRS ports, at this moment using walsh codes carrying out respectively being located at phase in { 2,3 } and/or { 9,10 } individual OFDM symbol With the multiplexing of two ports in the two neighboring pilot resource element of subcarrier, walsh codes adopt [1,1], [1, -1]；When each Comprising more than two DMRS ports in DMRS groups, at this moment using walsh codes carrying out being located at { 2,3 } and { 9,10 } individual OFDM symbol It is more than the multiplexing of two ports in four pilot resource elements of upper same sub-carrier, walsh codes adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], the pilot tone on different pilot sub-carriers in [1, -1, -1,1], and/or same DMRS groups Weights of the resource using the different layers of identical precoding, phase of the pilot resources in same pilot sub-carrier using identical precoding With the weights of layer.

6. method according to claim 1, it is characterised in that

Open loop DMRS be carried on { 0,4,6,10 } the individual subcarrier and { 9,10 } individual OFDM symbol of { 2,3 } the 1,5,7, 11 }, on individual subcarrier, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, is held on { 6,7,10,11 } individual subcarrier Carry using identical precoding or beam forming weight in DMRS groups 1, each DMRS group, between DMRS groups, adopt identical or not Same precoding or beam forming weight.

7. method according to claim 6, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, when in each DMRS group Comprising two DMRS ports, at this moment using walsh codes carrying out being located at identical son in { 2,3 } and/or { 9,10 } individual OFDM symbol The multiplexing of two ports in the two neighboring pilot resource element of carrier wave, walsh codes adopt [1,1], [1, -1]；As each DMRS Comprising more than two DMRS ports in group, at this moment using walsh codes carrying out being located at { 0 } height in { 2,3 } individual OFDM symbol Multiplexing on carrier wave and { 9,10 } individual OFDM symbol on { 1 } individual subcarrier in four pilot resource elements more than two ports, { 4 } individual subcarrier and four pilot resources on { 5 } individual subcarrier in { 9,10 } individual OFDM symbol in { 2,3 } individual OFDM symbol It is more than the multiplexing of two ports on element, carries out being located at { 6 } individual subcarrier and { 9,10 } individual OFDM in { 2,3 } individual OFDM symbol Multiplexing on symbol on { 7 } individual subcarrier in four pilot resource elements more than two ports, and carry out individual positioned at { 2,3 } { 10 } individual subcarrier and four pilot resource elements on { 11 } individual subcarrier in { 9,10 } individual OFDM symbol in OFDM symbol The upper multiplexing more than two ports, walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1, 1]；And/or { 0 } individual subcarrier and { 1 } individual subcarrier in { 9,10 } individual OFDM symbol are to prelist in { 2,3 } individual OFDM symbol Code layer group 0, in { 2,3 } individual OFDM symbol, { 4 } individual subcarrier and { 5 } individual subcarrier in { 9,10 } individual OFDM symbol are one pre- Coding layer group 1, in { 2,3 } individual OFDM symbol, { 6 } individual subcarrier and { 7 } individual subcarrier in { 9,10 } individual OFDM symbol are one The code layer that prelists group 2, { 10 } individual subcarrier and { 11 } individual subcarrier in { 9,10 } individual OFDM symbol in { 2,3 } individual OFDM symbol For the code layer group 3 that prelists；The power of the different layers of identical precoding weights is used between different layers group in same DMRS groups Value carries out precoding processing, and the identical layer of identical precoding weights is used within the different layers group in same DMRS groups Weights carry out precoding processing.

8. method according to claim 1, it is characterised in that

Open loop DMRS is carried on the 0th to 11 subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, wherein the 0th to 11 sub Carry identical or different DMRS groups on carrier wave respectively, in each DMRS group, adopt identical precoding or beam shaping to weigh Value, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, DMRS groups 0 are carried on wherein the { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight.

9. method according to claim 8, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, when in each DMRS group It is comprising two DMRS ports, at this moment identical in { 2,3 } and/or { 5,6 } individual OFDM symbol to carry out respectively using walsh codes The multiplexing of two ports in the two neighboring pilot resource element of subcarrier, walsh codes adopt [1,1], [1, -1]；When each Comprising more than two DMRS ports in DMRS groups, at this moment using walsh codes carrying out being located at { 2,3 } and { 5,6 } individual OFDM symbol It is more than the multiplexing of two ports in four pilot resource elements of upper same sub-carrier, walsh codes adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], [1, -1, -1,1], or every 2k DMRS groups and 2k+1 DMRS groups are a precoding Group, the different DMRS groups in same precoding group carry out precoding using the weights of the different layers of identical precoding, and wherein k is non- Negative integer.

10. method according to claim 1, it is characterised in that

Open loop DMRS is carried on { 1,5,7,11 } individual subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, wherein the 1, 5 } DMRS groups 0 are carried on individual subcarrier, carries in DMRS groups 1, each DMRS group on { 7,11 } individual subcarrier and adopt identical Precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,5,6,11 } individual subcarrier of { 2,3 } and { 5,6 } individual OFDM symbol, wherein the 0, 5 } DMRS groups 0 are carried on individual subcarrier, carries in DMRS groups 1, each DMRS group on { 6,11 } individual subcarrier and adopt identical Precoding or beam forming weight, adopt identical or different precoding or beam forming weight between DMRS groups.

11. methods according to claim 10, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, when in each DMRS group It is comprising two DMRS ports, at this moment identical in { 2,3 } and/or { 5,6 } individual OFDM symbol to carry out respectively using walsh codes The multiplexing of two ports in the two neighboring pilot resource element of subcarrier, walsh codes adopt [1,1], [1, -1]；When each Comprising more than two DMRS ports in DMRS groups, at this moment using walsh codes carrying out being located at { 2,3 } and { 5,6 } individual OFDM symbol It is more than the multiplexing of two ports in four pilot resource elements of upper same sub-carrier, walsh codes adopt [1,1,1,1], [1, 1, -1, -1], [1, -1,1, -1], the pilot tone on different pilot sub-carriers in [1, -1, -1,1], and/or same DMRS groups Weights of the resource using the different layers of identical precoding, phase of the pilot resources in same pilot sub-carrier using identical precoding With the weights of layer.

12. methods according to claim 1, it is characterised in that

Open loop DMRS is carried on { 0,4,6,10 } individual subcarrier and { 5,6 } individual OFDM symbol of { 2,3 } individual OFDM symbol On { 1,5,7,11 } individual subcarrier, DMRS groups 0, { 6,7,10,11 } height are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the Carry on carrier wave in DMRS groups 1, each DMRS group and adopt identical precoding or beam forming weight, between DMRS groups, adopt phase Same or different precodings or beam forming weight.

13. methods according to claim 12, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of TDM and/or CDM, when in each DMRS group Comprising two DMRS ports, at this moment using walsh codes carrying out being located at identical sub- load in { 2,3 } and/or { 5,6 } individual OFDM symbol The multiplexing of two ports in the two neighboring pilot resource element of ripple, walsh codes adopt [1,1], [1, -1]；When each DMRS group It is interior comprising more than two DMRS ports, at this moment carried to carry out being located at { 0 } height in { 2,3 } individual OFDM symbol using walsh codes Multiplexing on ripple and { 5,6 } individual OFDM symbol on { 1 } individual subcarrier in four pilot resource elements more than two ports, is carried out Positioned at four pilot tones on { 5 } individual subcarrier on { 4 } individual subcarrier in { 2,3 } individual OFDM symbol and { 5,6 } individual OFDM symbol It is more than the multiplexing of two ports on resource element, carries out individual positioned at { 6 } individual subcarrier in { 2,3 } individual OFDM symbol and { 5,6 } In OFDM symbol on { 7 } individual subcarrier in four pilot resource elements more than two ports multiplexing, and carry out be located at 2, 3 } { 10 } individual subcarrier and four pilot resources units on { 11 } individual subcarrier in { 5,6 } individual OFDM symbol in individual OFDM symbol It is more than the multiplexing of two ports on element, walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1, 1]；And/or { 0 } individual subcarrier and { 1 } individual subcarrier in { 5,6 } individual OFDM symbol are to prelist in { 2,3 } individual OFDM symbol Code layer group 0, in { 2,3 } individual OFDM symbol, { 4 } individual subcarrier and { 5 } individual subcarrier in { 5,6 } individual OFDM symbol are one pre- Coding layer group 1, in { 2,3 } individual OFDM symbol, { 6 } individual subcarrier and { 7 } individual subcarrier in { 5,6 } individual OFDM symbol are one The code layer that prelists group 2, { 10 } individual subcarrier and { 11 } individual subcarrier in { 5,6 } individual OFDM symbol in { 2,3 } individual OFDM symbol For the code layer group 3 that prelists；The power of the different layers of identical precoding weights is used between different layers group in same DMRS groups Value carries out precoding processing, and the identical layer of identical precoding weights is used within the different layers group in same DMRS groups Weights carry out precoding processing.

14. methods according to claim 1, it is characterised in that

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,6 } individual OFDM symbol, wherein DMRS groups 0 are carried on the { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier, carrying DMRS groups 1, each DMRS on { 6,7,10,11 } individual subcarrier Identical precoding or beam forming weight are adopted in group, identical or different precoding or wave beam between DMRS groups, is adopted Forming weight；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,6 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 is carried on { 4,5 } individual subcarrier, is held on { 6,7 } individual subcarrier DMRS groups 2 are carried, is carried on { 10,11 } individual subcarrier Forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,6 } individual OFDM symbol, wherein the DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, DMRS groups 1, each DMRS group on { 7,8,10,11 } individual subcarrier, is carried Interior employing identical precoding or beam forming weight, adopt between DMRS groups identical or different precoding or wave beam into Shape weights；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,6 } individual OFDM symbol, wherein the DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 is carried on { 3,4 } individual subcarrier, is carried on { 7,8 } individual subcarrier DMRS groups 2, carry DMRS groups 3 on { 10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or wave beam into Shape weights, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2 } individual OFDM symbol and { 6 } are individual On { 1,2,4,5,7,8,10,11 } individual subcarrier of OFDM symbol, wherein carrying on { 0,1,2,3,4,5 } individual subcarrier DMRS groups 0, carry DMRS groups 1 on { 6,7,8,9,10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Person's beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2 } individual OFDM symbol and { 6 } are individual On { 1,2,4,5,7,8,10,11 } individual subcarrier of OFDM symbol, wherein { 0, the 1 } height in { 2 } individual OFDM symbol DMRS groups 0 are carried on { 1,2 } individual subcarrier on carrier wave and { 6 } individual OFDM symbol, the in { 2 } individual OFDM symbol DMRS groups 1, { 2 } individual OFDM symbols are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 6 } individual OFDM symbol DMRS groups 2, { 2 } are carried on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 6 } individual OFDM symbol on number Carry on { 10,11 } individual subcarrier on { 9,10 } individual subcarrier and { 6 } individual OFDM symbol in individual OFDM symbol Identical precoding or beam forming weight are adopted in DMRS groups 3, each DMRS group, using identical or different between DMRS groups Precoding or beam forming weight.

15. methods according to claim 1 or 14, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of FDM and/or frequency domain CDM, as each DMRS Group in include two DMRS ports, at this moment using walsh codes come carry out be located at { 2 } and/or { 6 } individual OFDM symbol on adjacent sub- load The multiplexing of two ports in two pilot resource elements of ripple, walsh codes adopt [1,1], [1, -1]；When bag in each DMRS group Containing more than two DMRS ports, at this moment using walsh codes carrying out according with same OFDM positioned at { 2 } and/or { 6 } individual OFDM symbol It is more than the multiplexing of two-port in adjacent four pilot resource elements in same DMRS groups on number；The employing of walsh codes [1,1, 1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

16. methods according to claim 1, it is characterised in that

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,5,6,10 } individual OFDM symbol On, DMRS groups 0 are carried on { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier wherein the, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, often Identical precoding or beam forming weight are adopted in individual DMRS groups, adopt between DMRS groups identical or different precoding or Person's beam forming weight；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,5,6,10 } individual OFDM symbol On, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, on { 4,5 } individual subcarrier, carry DMRS groups 1, { 6,7 } height DMRS groups 2 are carried on carrier wave, is carried on { 10,11 } individual subcarrier Or beam forming weight, identical or different precoding or beam forming weight are adopted between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,10 } individual OFDM symbol, its In DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, carrying DMRS groups 1 on { 7,8,10,11 } individual subcarrier, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,10 } individual OFDM symbol, its In DMRS groups 0 are carried on { 0,1 } individual subcarrier, carrying DMRS groups 1 on { 3,4 } individual subcarrier, on { 7,8 } individual subcarrier DMRS groups 2 are carried, is carried on { 10,11 } individual subcarrier Beam shaping weights, adopt identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and { 5,10 } On { 1,2,4,5,7,8,10,11 } individual subcarrier of individual OFDM symbol, wherein carrying on { 0,1,2,3,4,5 } individual subcarrier DMRS groups 0, carry DMRS groups 1 on { 6,7,8,9,10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Person's beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and { 5,10 } On { 1,2,4,5,7,8,10,11 } individual subcarrier of individual OFDM symbol, wherein { 0,1 } in { 2 } individual OFDM symbol is individual DMRS groups 0 are carried on { 1,2 } individual subcarrier on subcarrier and { 5 } individual OFDM symbol, the in { 2 } individual OFDM symbol DMRS groups 1, { 2 } individual OFDM symbols are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 5 } individual OFDM symbol DMRS groups 2, { 2 } are carried on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 5 } individual OFDM symbol on number Carry on { 10,11 } individual subcarrier on { 9,10 } individual subcarrier and { 5 } individual OFDM symbol in individual OFDM symbol DMRS groups 3, { 1, the 2 } height on { 0,1 } the individual subcarrier and { 10 } individual OFDM symbol in { 6 } individual OFDM symbol are carried DMRS groups 4 are carried on ripple, on { 3,4 } the individual subcarrier and { 10 } individual OFDM symbol in { 6 } individual OFDM symbol the 4, 5 } DMRS groups 5, { 6,7 } the individual subcarrier and { 10 } individual OFDM symbol in { 6 } individual OFDM symbol are carried on individual subcarrier On { 7,8 } individual subcarrier on carry DMRS groups 6, { 9,10 } the individual subcarrier and { 10 } in { 6 } individual OFDM symbol Carry DMRS groups 7 on { 10,11 } individual subcarrier in individual OFDM symbol, each DMRS group it is interior using identical precoding or Beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups.

17. methods according to claim 1 or 16, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of FDM and/or frequency domain CDM, as each DMRS Two DMRS ports are included in group, it is at this moment individual positioned at { 2 } and/or { 5 } and/or { 6 } and/or { 10 } to carry out using walsh codes In OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, walsh codes adopt [1,1], [1 ,- 1]；Comprising more than two DMRS ports in each DMRS group, at this moment using walsh codes come carry out being located at { 2 } and/or { 5 } and/ Or in { 6 } and/or { 10 } individual OFDM symbol in same OFDM symbol in adjacent four pilot resource elements of same DMRS groups More than the multiplexing of two-port；Walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

18. methods according to claim 1, it is characterised in that

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,5,6,9 } individual OFDM symbol, DMRS groups 0 are carried on wherein the { 0, Isosorbide-5-Nitrae, 5 } individual subcarrier, carrying DMRS groups 1 on { 6,7,10,11 } individual subcarrier, each Identical precoding or beam forming weight are adopted in DMRS groups, adopt between DMRS groups identical or different precoding or Beam forming weight；Or,

Open loop DMRS is carried on { 0, Isosorbide-5-Nitrae, 5,6,7,10,11 } individual subcarrier of OFDM { 2,5,6,9 } individual OFDM symbol, DMRS groups 0 are carried wherein on { 0,1 } individual subcarrier, DMRS groups 1, { 6,7 } individual subcarrier on { 4,5 } individual subcarrier, is carried Upper carrying DMRS groups 2, carry DMRS groups 3 on { 10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,9 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 0,1,3,4 } individual subcarrier, DMRS groups 1, each DMRS on { 7,8,10,11 } individual subcarrier, is carried Identical precoding or beam forming weight are adopted in group, identical or different precoding or wave beam between DMRS groups, is adopted Forming weight；Or,

Open loop DMRS is carried on { 0,1,3,4,7,8,10,11 } individual subcarrier of { 2,5,6,9 } individual OFDM symbol, wherein DMRS groups 0 are carried on { 0,1 } individual subcarrier, DMRS groups 1 is carried on { 3,4 } individual subcarrier, is held on { 7,8 } individual subcarrier DMRS groups 2 are carried, is carried on { 10,11 } individual subcarrier Forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and { 5,9 } On { 1,2,4,5,7,8,10,11 } individual subcarrier of individual OFDM symbol, wherein carrying on { 0,1,2,3,4,5 } individual subcarrier DMRS groups 0, carry DMRS groups 1 on { 6,7,8,9,10,11 } individual subcarrier, each DMRS group it is interior using identical precoding or Person's beam forming weight, adopts identical or different precoding or beam forming weight between DMRS groups；Or,

Open loop DMRS is carried on { 0,1,3,4,6,7,9,10 } individual subcarrier of { 2,6 } individual OFDM symbol and { 5,9 } On { 1,2,4,5,7,8,10,11 } individual subcarrier of individual OFDM symbol, wherein { 0,1 } in { 2 } individual OFDM symbol is individual DMRS groups 0 are carried on { 1,2 } individual subcarrier on subcarrier and { 5 } individual OFDM symbol, the in { 2 } individual OFDM symbol DMRS groups 1, { 2 } individual OFDM symbols are carried on { 4,5 } individual subcarrier on { 3,4 } individual subcarrier and { 5 } individual OFDM symbol DMRS groups 2, { 2 } are carried on { 7,8 } individual subcarrier on { 6,7 } individual subcarrier and { 5 } individual OFDM symbol on number Carry on { 10,11 } individual subcarrier on { 9,10 } individual subcarrier and { 5 } individual OFDM symbol in individual OFDM symbol DMRS groups 3, { 1, the 2 } height on { 0,1 } the individual subcarrier and { 9 } individual OFDM symbol in { 6 } individual OFDM symbol are carried DMRS groups 4 are carried on ripple, on { 3,4 } the individual subcarrier and { 9 } individual OFDM symbol in { 6 } individual OFDM symbol the 4, 5 } DMRS groups 5 are carried on individual subcarrier, on { 6,7 } the individual subcarrier and { 9 } individual OFDM symbol in { 6 } individual OFDM symbol { 7,8 } individual subcarrier on carry DMRS groups 6, { 9,10 } the individual subcarrier and { 9 } in { 6 } individual OFDM symbol is individual Carry on { 10,11 } individual subcarrier in OFDM symbol in DMRS groups 7, each DMRS group and adopt identical precoding or ripple Beam shaping weights, adopt identical or different precoding or beam forming weight between DMRS groups.

19. methods according to claim 1 or 18, it is characterised in that

For in each DMRS group, different DMRS ports are multiplexed by the way of FDM and/or frequency domain CDM, as each DMRS Two DMRS ports are included in group, it is at this moment individual positioned at { 2 } and/or { 5 } and/or { 6 } and/or { 9 } to carry out using walsh codes In OFDM symbol in two pilot resource elements of adjacent sub-carrier two ports multiplexing, walsh codes adopt [1,1], [1 ,- 1]；Comprising more than two DMRS ports in each DMRS group, at this moment using walsh codes come carry out being located at { 2 } and/or { 5 } and/ Or in { 6 } and/or { 9 } individual OFDM symbol it is big in adjacent four pilot resource elements of same DMRS groups in same OFDM symbol In the multiplexing of two-port；Walsh codes adopt [1,1,1,1], [1,1, -1, -1], [1, -1,1, -1], [1, -1, -1,1].

20. a kind of reference signal processing systems of open loop multiple-input and multiple-output mimo system, it is characterised in that the system includes out Ring DMRS Multiplexing Units, weighting processing unit；Wherein,

The open loop DMRS Multiplexing Units, in special subframe, using CDM and/or TDM and/or FDM technology, the 2nd, 3rd, the open loop DMRS of different groups is multiplexed in one or more OFDM symbols in 5,6,9,10 OFDM symbols；

The weighting processing unit, for using identical or different weights for the open loop DMRS of different groups, is carried out corresponding Weighting is processed；

Wherein, the OFDM symbol for carrying open loop DMRS is { 2,3,9,10 } individual OFDM symbol；Or,

The OFDM symbol for carrying open loop DMRS is { 2,3 } and { 5,6 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,6 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,5,6,10 } individual OFDM symbol；Or,

Open loop DMRS is carried in { 2,5,6,9 } individual OFDM symbol.