CN102843325A - Method and system for processing reference signal of an open loop MIMO (multiple-input multiple-output) system - Google Patents

Abstract

The invention discloses a method and a system for processing a reference signal of an open loop MIMO (multiple-input multiple-output) system. The method comprises the following steps: utilizing a CDM (code division multiplexing) technology and/or a TDM (time division multiplexing) technology and/or FDM (frequency division multiplexing) technology in a special sub-frame, multiplexing different groups of open loop DMRSs (dynamic memory management system) on one symbol or more than one orthogonal frequency division multiplexing symbols in the second, third, fifth, sixth, ninth and tenth OFDM symbols; and utilizing the same or different weights as to different groups of open loop DMRSs, and carrying out corresponding weighted approach. According to the method and system for processing the reference signal of the open loop MIMO system, the pilot frequency design of the open loop is carried out on the basis of the DMRS; the pre-coded weight or weight formed by a wave beam at the network side cannot be limited by a codebook; the precision of the pre-coded or wave-beam formed weight is greatly improved, and the performance of UE (user equipment) under an open-loop environment can be improved possibly on the basis of not increasing the realization complexity, the test complexity and resource consumption of the UE.

Description

The reference signal processing method and the system of a kind of open loop MIMO system

Technical field

The present invention relates to the communications field, be specifically related to the reference signal processing method and the system of a kind of open loop multiple-input and multiple-output (MIMO) system.

Background technology

Long Term Evolution LTE (Long term evolution, LTE) (Release is R) in 8/9 for version; In order quality of channel to be measured and the data symbol that receives to be carried out demodulation, designed CRS (Common Reference Signal, public reference signal); UE (User Equipment; Subscriber equipment) can carry out the measurement of channel through CRS, thereby decision UE carries out district reselecting and switches to Target cell, and carry out the measurement of channel quality in the UE connection status; When disturbing rank higher, physical layer can be broken off through high-rise relevant Radio Link connection failure signaling and being connected.In LTE R10,, two kinds have been defined respectively with reference to signal: CSI-RS (channel information reference signal) and DMRS (demodulated reference signal) in order further to improve the average availability of frequency spectrum in sub-district and the throughput of the cell edge availability of frequency spectrum and each UE; Wherein, CSI-RS is used for the measurement of channel; Can calculate UE through the measurement to CSI-RS need be to the PMI of base station feedback (Precoding Matrix Indicator; Pre-coding matrix index), CQI (ChannelQuality Indicator, channel quality information indication) and RI (Rank Indicator, order indication).Utilize DMRS can make UE downlink data receiving pellucidly, and need not to know and to reduce the load of PDCCH like this by the precoding weights that base station side is suitable for, can reduce the restriction of code book simultaneously weights.

In R8; Utilize CRS to carry out the transmission of TM (transmission mode) 1 to TM6; Also utilize CRS to carry out demodulation for this open loop mode of TM3; Only TM1, TM2, TM4 to TM6 are carried out the optimization based on the DMRS transmission in R9 to the R10 stage, this open loop mode of TM3 has not been carried out the optimization based on DMRS.In future version; Consider many factors such as energy-conservation, resource savings; CRS need fade out gradually, thus need design based on DMRS for this open loop sending mode of TM3, but not corresponding techniques support at present; Promptly can't realize the transmission of open loop MIMO through DMRS, the extra resource expense that causes the public reference signal pilot tone to be brought is higher.

Summary of the invention

In view of this, main purpose of the present invention is to provide the reference signal processing method and the system of a kind of open loop MIMO system, realizes the transmission of open loop MIMO through DMRS, thereby reduces the extra resource expense that the public reference signal pilot tone is brought.

For achieving the above object, technical scheme of the present invention is achieved in that

The reference signal processing method of a kind of open loop MIMO system, this method comprises:

In special subframe, utilize CDM and/or TDM and/or FDM technology, multiplexing not on the same group open loop DMRS on the one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbol; Use identical or different weights on the same group open loop DMRS not, carry out corresponding weighted.

The OFDM symbol that carries open loop DMRS be the 2,3,9,10} OFDM symbol.

Open loop DMRS is carried on the { 2; 3} and { 9; On the 0th to 11 number of sub-carrier of 10} OFDM symbol; Wherein carry identical or different DMRS groups on the 0th to 11 number of sub-carrier respectively, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 9, the { 0,1,4 of 10} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 4} number of sub-carrier DMRS group 0, the 1, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 7, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 10} number of sub-carrier.

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 9, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 9, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 10} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1,1;-1], [1 ,-1 ,-1; 1], perhaps every 2k DMRS group and 2k+1 DMRS group are a precoding group, and the different DMRS groups in the same precoding group use the weights of the different layers of identical precoding to carry out precoding, and wherein k is a nonnegative integer.

Open loop DMRS be carried on the 2, and 3} with 9, the { 1 of 10} OFDM symbol; 5,7, on the 11} number of sub-carrier; Wherein the 1, carry DMRS group 0, the { 7 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 9, the { 0 of 10} OFDM symbol; 5,6, on the 11} number of sub-carrier; Wherein the 0, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 9, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 9, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 10} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1; 1 ,-1], [1 ,-1;-1,1], and/or the pilot resources on the different pilot sub-carriers in the same DMRS group adopts the weights of the different layers of identical precoding, and the pilot resources on the same pilot sub-carrier adopts the weights of the identical layer of identical precoding.

Open loop DMRS be carried on 2, and 3} 0,4,6,10} number of sub-carrier and { 9; 10} OFDM symbol 1,5,7, on the 11} number of sub-carrier, wherein the { 0; 1,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number be positioned at 2,3} and/or 9, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, on 3} the OFDM symbol the 0} number of sub-carrier and 9, { multiplexing greater than two ports on four pilot resource element on the 1} number of sub-carrier, { 2 on 10} OFDM symbol the; On 3} the OFDM symbol the 4} number of sub-carrier with 9, on 10} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 5} number of sub-carrier, be positioned at 2, { 6} number of sub-carrier and { 9 on 3} the OFDM symbol; On 10} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 7} number of sub-carrier, and be positioned at 2, on 3} the OFDM symbol the 10} number of sub-carrier with 9, { multiplexing greater than two ports on four pilot resource element on the 11} number of sub-carrier on 10} OFDM symbol the; The walsh sign indicating number adopts [1,1,1,1]; [1,1 ,-1 ,-1]; [1 ,-1,1 ,-1]; [1 ,-1 ,-1,1]; And/or { 2, { the 0} number of sub-carrier is with { 9, the { the 1} number of sub-carrier is a precoding layer group 0 on 10} the OFDM symbol on 3} the OFDM symbol the; { 2, { the 4} number of sub-carrier is with { 9, the { the 5} number of sub-carrier is a precoding layer group 1 on 10} the OFDM symbol on 3} the OFDM symbol the; { 2; On 3} the OFDM symbol the 6} number of sub-carrier with 9, on 10} the OFDM symbol the 7} number of sub-carrier is a precoding layer group 2, { 2; { the 10} number of sub-carrier is with { 9, the { the 11} number of sub-carrier is a precoding layer group 3 on 10} the OFDM symbol on 3} the OFDM symbol the; Use the weights of the different layers of identical precoding weights to carry out precoding processing between the different layers group in same DMRS group, the weights that are positioned at the identical layer of the identical precoding weights of use within the different layers group of same DMRS group carry out precoding processing.

The OFDM symbol that carries open loop DMRS be the 2, and 3} with 5,6} OFDM symbol.

Open loop DMRS is carried on the { 2; 3} and { 5; On the 0th to 11 number of sub-carrier of 6} OFDM symbol; Wherein carry identical or different DMRS groups on the 0th to 11 number of sub-carrier respectively, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 5, the { 0,1,4 of 6} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 5, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 5, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 6} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1,1;-1], [1 ,-1 ,-1; 1], perhaps every 2k DMRS group and 2k+1 DMRS group are a precoding group, and the different DMRS groups in the same precoding group use the weights of the different layers of identical precoding to carry out precoding, and wherein k is a nonnegative integer.

Open loop DMRS be carried on the 2, and 3} with 5, the { 1 of 6} OFDM symbol; 5,7, on the 11} number of sub-carrier; Wherein the 1, carry DMRS group 0, the { 7 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 5, the { 0 of 6} OFDM symbol; 5,6, on the 11} number of sub-carrier; Wherein the 0, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 5, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 5, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 6} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1; 1 ,-1], [1 ,-1;-1,1], and/or the pilot resources on the different pilot sub-carriers in the same DMRS group adopts the weights of the different layers of identical precoding, and the pilot resources on the same pilot sub-carrier adopts the weights of the identical layer of identical precoding.

Open loop DMRS be carried on 2, and 3} OFDM symbol 0,4,6,10} number of sub-carrier and { 5; 6} OFDM symbol 1,5,7, on the 11} number of sub-carrier, wherein the { 0; 1,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number be positioned at 2,3} and/or 5, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, { 0} number of sub-carrier and { 5, { multiplexing greater than two ports on four pilot resource element on the 1} number of sub-carrier is positioned at { 2 on 6} OFDM symbol the on 3} the OFDM symbol the; On 3} the OFDM symbol the 4} number of sub-carrier with 5, on 6} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 5} number of sub-carrier, be positioned at 2, { 6} number of sub-carrier and { 5 on 3} the OFDM symbol; On 6} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 7} number of sub-carrier, and be positioned at 2, on 3} the OFDM symbol the 10} number of sub-carrier with 5, { multiplexing greater than two ports on four pilot resource element on the 11} number of sub-carrier on 6} OFDM symbol the; The walsh sign indicating number adopts [1,1,1,1]; [1,1 ,-1 ,-1]; [1 ,-1,1 ,-1]; [1 ,-1 ,-1,1]; And/or { 2, { the 0} number of sub-carrier is with { 5, the { the 1} number of sub-carrier is a precoding layer group 0 on 6} the OFDM symbol on 3} the OFDM symbol the; { 2, { the 4} number of sub-carrier is with { 5, the { the 5} number of sub-carrier is a precoding layer group 1 on 6} the OFDM symbol on 3} the OFDM symbol the; { 2; On 3} the OFDM symbol the 6} number of sub-carrier with 5, on 6} the OFDM symbol the 7} number of sub-carrier is a precoding layer group 2, { 2; { the 10} number of sub-carrier is with { 5, the { the 11} number of sub-carrier is a precoding layer group 3 on 6} the OFDM symbol on 3} the OFDM symbol the; Use the weights of the different layers of identical precoding weights to carry out precoding processing between the different layers group in same DMRS group, the weights that are positioned at the identical layer of the identical precoding weights of use within the different layers group of same DMRS group carry out precoding processing.

Open loop DMRS be carried on 2, on 6} the OFDM symbol.

Open loop DMRS be carried on OFDM 2, the { 0,1,4,5 of 6} OFDM symbol; 6,7,10, on the 11} number of sub-carrier, wherein the { 0; 1,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on OFDM 2, the { 0,1,4,5 of 6} OFDM symbol; 6,7,10, on the 11} number of sub-carrier, wherein the { 0; { 4, { 6, carrying DMRS organizes 2 to carrying DMRS group 0, the on the 1} number of sub-carrier on the 7} number of sub-carrier to carry DMRS group 1, the on the 5} number of sub-carrier; The 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 7,8,10, on the 11} number of sub-carrier, wherein the { 0; 1,3, carry DMRS group 0, the { 7,8 on the 4} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 7,8,10, on the 11} number of sub-carrier, wherein the { 0; { 3, { 7, carrying DMRS organizes 2 to carrying DMRS group 0, the on the 1} number of sub-carrier on the 8} number of sub-carrier to carry DMRS group 1, the on the 4} number of sub-carrier; The 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2} OFDM symbol the 0,1,3,4,6,7,9, and on the 10} number of sub-carrier with { the { 1 of 6} OFDM symbol; 2,4,5,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS is carried on { the { 0,1,3,4,6 of 2} OFDM symbol; 7,9, on the 10} number of sub-carrier with { the { 1,2 of 6} OFDM symbol; 4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 6} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 6} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 6} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 6} OFDM symbol 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group; Adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { two ports multiplexing on two pilot resource element of adjacent sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 6} OFDM symbol multiplexing greater than two-port on adjacent four pilot resource element on the same DMRS group on the same OFDM symbol greater than two DMRS ports; The walsh sign indicating number adopts [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Open loop DMRS be carried on 2,5,6, on 10} the OFDM symbol.

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 10} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 10} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 4, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 7} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 10} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 10} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4,6,7,9 of 6} OFDM symbol; On the 10} number of sub-carrier with the 5, the { 1,2,4,5,7,8,10 of 10} OFDM symbol; On the 11} number of sub-carrier, wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 6,7,9, on the 10} number of sub-carrier with the 5, the { 1 of 10} OFDM symbol; 2,4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 5} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 5} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 5} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 5} OFDM symbol 10, carry on the 11} number of sub-carrier DMRS group 3, the on 6} OFDM symbol 0,1} number of sub-carrier and the { the { 1 on 10} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 5 to the on 10} OFDM symbol to 4} number of sub-carrier and the to the on 6} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 4, the on the 2} number of sub-carrier; The the on 6} OFDM symbol 6,7} number of sub-carrier and the on 10} OFDM symbol 7, carry DMRS group 6, the { the { 9 on 6} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 10} OFDM symbol 10, and carry DMRS group 7 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group; Adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { two ports multiplexing on two pilot resource element of adjacent sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { multiplexing greater than two-port on adjacent four pilot resource element that same DMRS organizes on the same OFDM symbol on 10} OFDM symbol greater than two DMRS ports; The walsh sign indicating number adopts [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Open loop DMRS be carried on 2,5,6, on 9} the OFDM symbol.

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 9} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 9} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 4, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 7} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 9} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 9} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4,6,7,9 of 6} OFDM symbol; On the 10} number of sub-carrier with the 5, the { 1,2,4,5,7,8,10 of 9} OFDM symbol; On the 11} number of sub-carrier, wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 6,7,9, on the 10} number of sub-carrier with the 5, the { 1 of 9} OFDM symbol; 2,4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 5} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 5} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 5} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 5} OFDM symbol 10, carry on the 11} number of sub-carrier DMRS group 3, the on 6} OFDM symbol 0,1} number of sub-carrier and the { the { 1 on 9} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 5 to the on 9} OFDM symbol to 4} number of sub-carrier and the to the on 6} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 4, the on the 2} number of sub-carrier; The the on 6} OFDM symbol 6,7} number of sub-carrier and the on 9} OFDM symbol 7, carry DMRS group 6, the { the { 9 on 6} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 9} OFDM symbol 10, and carry DMRS group 7 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

In each DMRS group; Adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { two ports multiplexing on two pilot resource element of adjacent sub-carrier on 9} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { multiplexing greater than two-port on adjacent four pilot resource element that same DMRS organizes on the same OFDM symbol on 9} OFDM symbol greater than two DMRS ports; The walsh sign indicating number adopts [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

A kind of reference signal treatment system of open loop multiple-input and multiple-output mimo system, this system comprise open loop DMRS Multiplexing Unit, weighting processing unit; Wherein,

Said open loop DMRS Multiplexing Unit is used at special subframe, utilizes CDM and/or TDM and/or FDM technology, multiplexing not on the same group open loop DMRS on the one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbol;

Said weighting processing unit is used for using identical or different weights on the same group open loop DMRS not, carries out corresponding weighted.

The OFDM symbol that carries open loop DMRS be the 2,3,9,10} OFDM symbol; Perhaps,

The OFDM symbol that carries open loop DMRS be the 2, and 3} with 5,6} OFDM symbol; Perhaps,

Open loop DMRS be carried on 2, on 6} the OFDM symbol; Perhaps,

Open loop DMRS be carried on 2,5,6, on 10} the OFDM symbol; Perhaps,

Open loop DMRS be carried on 2,5,6, on 9} the OFDM symbol.

The reference signal processing method and the system of the open loop MIMO system that the present invention proposes; Realize the transmission of open loop MIMO through DMRS; Thereby reduce the extra resource expense that the public reference signal pilot tone is brought; As, based on the pilot design that DMRS carries out open loop, the precoding weights of network side or the weights of beam shaping can not receive the restriction of code book; Greatly improve the accuracy of precoding or beam shaping weights, can on the basis that does not increase UE implementation complexity and testing complex degree and resource consumption, improve the performance of UE under open loop mode as far as possible.

Description of drawings

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

Fig. 3, Fig. 4 are the time division multiplexing of the embodiment of the invention or the DMRS group mapping pattern sketch map of time domain spread spectrum Normal CP 4;

Fig. 5 to Figure 10 is the time division multiplexing of the embodiment of the invention or the DMRS group mapping pattern sketch map of time domain spread spectrum Normal CP 2;

Figure 11,19,15,23 is the frequency division multiplexing of the embodiment of the invention or the DMRS group mapping pattern sketch map of frequency domain spread spectrum Normal CP 2;

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

Figure 14,18,22,26,28,30,32,34 is the frequency division multiplexing of the embodiment of the invention or the DMRS group mapping pattern sketch map of frequency domain spread spectrum Normal CP 8;

Figure 35 is the reference signal handling process sketch of the open loop MIMO system of the embodiment of the invention;

Figure 36 is the reference signal treatment system figure of the open loop MIMO system of the embodiment of the invention.

Embodiment

In practical application; Can utilize CDM and/or TDM and/or FDM technology multiplexing not on the same group open loop demodulated reference signal on one or more OFDM symbols; On the same group open loop demodulated reference signal does not use identical or different weights to handle, and makes Resource Block use a plurality of different weights to carry out corresponding weighted.Particularly, said weights comprise precoding weights and/or beam shaping weights, and said weighted then comprises: use said precoding weights and/or beam shaping weights to carry out corresponding precoding and/or beam shaping processing.

Preferably, the OFDM symbol that carries open loop DMRS can be for the 2,3,9,10} OFDM symbol.

Preferably; Open loop DMRS can be carried on the { 2; 3} with 9, on the 0th to 11 number of sub-carrier of 10} OFDM symbol, wherein carry identical or different DMRS on the 0th to 11 number of sub-carrier respectively and organize; Adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on the 2, and 3} with 9, the { 0,1 of 10} OFDM symbol; 4,5,6,7; 10, on the 11} number of sub-carrier, wherein the 0, carry DMRS group 0 on the 4} number of sub-carrier; The 1, carrying DMRS group 1, the on the 5} number of sub-carrier 6, carry DMRS group 2 on the 10} number of sub-carrier; The 7, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or { 9; Two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise greater than two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2, and 3} with 9, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 10} OFDM symbol, the walsh sign indicating number can adopt [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1,1;-1], [1 ,-1 ,-1; 1], perhaps every 2k DMRS group and 2k+1 DMRS group are a precoding group, and the different DMRS groups in the same precoding group use the weights of the different layers of identical precoding to carry out precoding, and wherein k is a nonnegative integer.

Preferably, open loop DMRS can be carried on the 2, and 3} with 9, the { 1 of 10} OFDM symbol; 5,7, on the 11} number of sub-carrier; Wherein the 1, carry DMRS group 0, the { 7 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on the 2, and 3} with 9, the { 0 of 10} OFDM symbol; 5,6, on the 11} number of sub-carrier; Wherein the 0, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or { 9; Two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise greater than two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2, and 3} with 9, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 10} OFDM symbol, the walsh sign indicating number can adopt [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1; 1 ,-1], [1 ,-1;-1,1], and/or the pilot resources on the different pilot sub-carriers in the same DMRS group adopts the weights of the different layers of identical precoding, and the pilot resources on the same pilot sub-carrier adopts the weights of the identical layer of identical precoding.

Preferably, open loop DMRS can be carried on 2, the { 0,4,6 of 3}; The 10} number of sub-carrier with 9, and 10} OFDM symbol the 1,5,7, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2,3} and/or { 9; Two ports multiplexing on two pilot resource element of same sub-carrier on 10} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise greater than two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2, on 3} the OFDM symbol the 0} number of sub-carrier and 9, on 10} the OFDM symbol the 1} number of sub-carrier, 2, { 4} number of sub-carrier and { 9 on 3} the OFDM symbol; On 10} the OFDM symbol the 5} number of sub-carrier, 2, on 3} the OFDM symbol the 6} number of sub-carrier with 9, on 10} the OFDM symbol the 7} number of sub-carrier, 2, on 3} the OFDM symbol the 10} number of sub-carrier and 9, { multiplexing greater than two ports on four pilot resource element on the 11} number of sub-carrier on 10} OFDM symbol the; The walsh sign indicating number can adopt [1,1,1,1]; [1,1 ,-1 ,-1]; [1 ,-1,1 ,-1]; [1 ,-1 ,-1,1].And/or { 2, { the 0} number of sub-carrier is with { 9, the { the 1} number of sub-carrier is a precoding layer group 0 on 10} the OFDM symbol on 3} the OFDM symbol the; { 2, { the 4} number of sub-carrier is with { 9, the { the 5} number of sub-carrier is a precoding layer group 1 on 10} the OFDM symbol on 3} the OFDM symbol the; { 2; On 3} the OFDM symbol the 6} number of sub-carrier with 9, on 10} the OFDM symbol the 7} number of sub-carrier is a precoding layer group 2, { 2; { the 10} number of sub-carrier is with { 9, the { the 11} number of sub-carrier is a precoding layer group 3 on 10} the OFDM symbol on 3} the OFDM symbol the.Use the weights of the different layers of identical precoding weights to carry out precoding processing between the different layers group in same DMRS group, the weights that are positioned at the identical layer of the identical precoding weights of use within the different layers group of same DMRS group carry out precoding processing.

Preferably, the OFDM symbol that carries open loop DMRS be the 2, and 3} with 5,6} OFDM symbol.

Preferably; Open loop DMRS can be carried on the { 2; 3} with 5, on the 0th to 11 number of sub-carrier of 6} OFDM symbol, wherein carry identical or different DMRS on the 0th to 11 number of sub-carrier respectively and organize; Adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on the 2, and 3} with 5, the { 0,1,4 of 6} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or { 5; Two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise greater than two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2, and 3} with 5, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 6} OFDM symbol, the walsh sign indicating number can adopt [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1,1;-1], [1 ,-1 ,-1; 1], perhaps every 2k DMRS group and 2k+1DMRS group are a precoding group, and the different DMRS groups in the same precoding group use the weights of the different layers of identical precoding to carry out precoding, and wherein k is a nonnegative integer.

Preferably, open loop DMRS can be carried on the 2, and 3} with 5, the { 1 of 6} OFDM symbol; 5,7, on the 11} number of sub-carrier; Wherein the 1, carry DMRS group 0, the { 7 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on the 2, and 3} with 5, the { 0 of 6} OFDM symbol; 5,6, on the 11} number of sub-carrier; Wherein the 0, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or { 5; Two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise greater than two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2, and 3} with 5, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 6} OFDM symbol, the walsh sign indicating number can adopt [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1; 1 ,-1], [1 ,-1;-1,1], and/or the pilot resources on the different pilot sub-carriers in the same DMRS group adopts the weights of the different layers of identical precoding, and the pilot resources on the same pilot sub-carrier adopts the weights of the identical layer of identical precoding.

Preferably, open loop DMRS can be carried on 2, the { 0,4,6 of 3} OFDM symbol; The 10} number of sub-carrier with 5, and 6} OFDM symbol the 1,5,7, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2,3} and/or { 5; Two ports multiplexing on two pilot resource element of same sub-carrier on 6} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise greater than two DMRS ports, at this moment can adopt the walsh sign indicating number be positioned at 2, { 0} number of sub-carrier and { 5, { multiplexing greater than two ports on four pilot resource element on the 1} number of sub-carrier is positioned at { 2 on 6} OFDM symbol the on 3} the OFDM symbol the; On 3} the OFDM symbol the 4} number of sub-carrier with 5, on 6} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 5} number of sub-carrier, be positioned at 2, { 6} number of sub-carrier and { 5 on 3} the OFDM symbol; On 6} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 7} number of sub-carrier, and be positioned at 2, on 3} the OFDM symbol the 10} number of sub-carrier with 5, { multiplexing greater than two ports on four pilot resource element on the 11} number of sub-carrier on 6} OFDM symbol the; The walsh sign indicating number can adopt [1,1,1,1]; [1,1 ,-1 ,-1]; [1 ,-1,1 ,-1]; [1 ,-1 ,-1,1].And/or { 2, { the 0} number of sub-carrier is with { 5, the { the 1} number of sub-carrier is a precoding layer group 0 on 6} the OFDM symbol on 3} the OFDM symbol the; { 2, { the 4} number of sub-carrier is with { 5, the { the 5} number of sub-carrier is a precoding layer group 1 on 6} the OFDM symbol on 3} the OFDM symbol the; { 2; On 3} the OFDM symbol the 6} number of sub-carrier with 5, on 6} the OFDM symbol the 7} number of sub-carrier is a precoding layer group 2, { 2; { the 10} number of sub-carrier is with { 5, the { the 11} number of sub-carrier is a precoding layer group 3 on 6} the OFDM symbol on 3} the OFDM symbol the.Use the weights of the different layers of identical precoding weights to carry out precoding processing between the different layers group in same DMRS group, the weights that are positioned at the identical layer of the identical precoding weights of use within the different layers group of same DMRS group carry out precoding processing.

Preferably, open loop DMRS can be carried on 2, on 6} the OFDM symbol.

Preferably, open loop DMRS can be carried on OFDM 2, the { 0,1,4 of 6} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on OFDM 2, the { 0,1,4 of 6} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 4, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 7} number of sub-carrier.

Preferably, open loop DMRS can be carried on 2, the { 0,1,3 of 6} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2, the { 0,1,3 of 6} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier.

Preferably, open loop DMRS can be carried on { the { 0,1,3,4,6,7,9 of 2} OFDM symbol; On the 10} number of sub-carrier with the 6} OFDM symbol the 1,2,4,5,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on { the { 0,1,3,4 of 2} OFDM symbol; 6,7,9, on the 10} number of sub-carrier with { the { 1,2 of 6} OFDM symbol; 4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 6} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 6} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 6} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 6} OFDM symbol 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports; At this moment can adopt the walsh sign indicating number be positioned at 2} and/or two ports multiplexing on two pilot resource element of adjacent sub-carrier on 6} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise, at this moment can adopt the walsh sign indicating number to be positioned at { 2} and/or { 6} OFDM symbol multiplexing greater than two-port on adjacent four pilot resource element on the same DMRS group on the same OFDM symbol greater than two DMRS ports.The walsh sign indicating number 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 on 2,5,6, on 10} the OFDM symbol.

Preferably, open loop DMRS can be carried on OFDM 2,5,6, the { 0,1 of 10} OFDM symbol; 4,5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on OFDM 2,5,6, the { 0 of 10} OFDM symbol; 1,4,5,6,7; 10, on the 11} number of sub-carrier, wherein the 0, carry DMRS group 0 on the 1} number of sub-carrier; The 4, carrying DMRS group 1, the on the 5} number of sub-carrier 6, carry DMRS group 2 on the 7} number of sub-carrier; The 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2,5,6, the { 0,1 of 10} OFDM symbol; 3,4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2,5,6, the { 0,1 of 10} OFDM symbol; 3,4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier.

Preferably, open loop DMRS can be carried on 2, the { 0,1,3,4,6 of 6} OFDM symbol; 7,9, on the 10} number of sub-carrier with the 5, the { 1,2,4,5 of 10} OFDM symbol; 7,8,10, on the 11} number of sub-carrier, wherein the { 0,1; 2,3,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2, the { 0,1 of 6} OFDM symbol; 3,4,6,7; 9, on the 10} number of sub-carrier with the 5, the { 1,2 of 10} OFDM symbol; 4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 5} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 5} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 5} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 5} OFDM symbol 10, carry on the 11} number of sub-carrier DMRS group 3, the on 6} OFDM symbol 0,1} number of sub-carrier and the { the { 1 on 10} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 5 to the on 10} OFDM symbol to 4} number of sub-carrier and the to the on 6} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 4, the on the 2} number of sub-carrier; The the on 6} OFDM symbol 6,7} number of sub-carrier and the on 10} OFDM symbol 7, carry DMRS group 6, the { the { 9 on 6} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 10} OFDM symbol 10, and carry DMRS group 7 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports; At this moment can adopt the walsh sign indicating number be positioned at 2} and/or 5} and/or 6} and/or two ports multiplexing on two pilot resource element of adjacent sub-carrier on 10} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise, at this moment can adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { multiplexing greater than two-port on adjacent four pilot resource element that same DMRS organizes on the same OFDM symbol on 10} OFDM symbol greater than two DMRS ports.The walsh sign indicating number 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 on 2,5,6, on 9} the OFDM symbol.

Preferably, open loop DMRS can be carried on OFDM 2,5,6, the { 0,1 of 9} OFDM symbol; 4,5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on OFDM 2,5,6, the { 0 of 9} OFDM symbol; 1,4,5,6,7; 10, on the 11} number of sub-carrier, wherein the 0, carry DMRS group 0 on the 1} number of sub-carrier; The 4, carrying DMRS group 1, the on the 5} number of sub-carrier 6, carry DMRS group 2 on the 7} number of sub-carrier; The 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2,5,6, the { 0,1 of 9} OFDM symbol; 3,4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2,5,6, the { 0,1 of 9} OFDM symbol; 3,4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier.

Preferably, open loop DMRS can be carried on 2, the { 0,1,3,4,6 of 6} OFDM symbol; 7,9, on the 10} number of sub-carrier with the 5, the { 1,2,4,5 of 9} OFDM symbol; 7,8,10, on the 11} number of sub-carrier, wherein the { 0,1; 2,3,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, open loop DMRS can be carried on 2, the { 0,1 of 6} OFDM symbol; 3,4,6,7; 9, on the 10} number of sub-carrier with the 5, the { 1,2 of 9} OFDM symbol; 4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 5} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 5} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 5} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 5} OFDM symbol 10, carry on the 11} number of sub-carrier DMRS group 3, the on 6} OFDM symbol 0,1} number of sub-carrier and the { the { 1 on 9} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 5 to the on 9} OFDM symbol to 4} number of sub-carrier and the to the on 6} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 4, the on the 2} number of sub-carrier; The the on 6} OFDM symbol 6,7} number of sub-carrier and the on 9} OFDM symbol 7, carry DMRS group 6, the { the { 9 on 6} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 9} OFDM symbol 10, and carry DMRS group 7 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

Preferably, in each DMRS group, can adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port; In each DMRS group, comprise two DMRS ports; At this moment can adopt the walsh sign indicating number be positioned at 2} and/or 5} and/or 6} and/or two ports multiplexing on two pilot resource element of adjacent sub-carrier on 9} OFDM symbol, the walsh sign indicating number can adopt [1,1]; [1 ,-1].In each DMRS group, comprise, at this moment can adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { multiplexing greater than two-port on adjacent four pilot resource element that same DMRS organizes on the same OFDM symbol on 9} OFDM symbol greater than two DMRS ports.The walsh sign indicating number can adopt [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Need to prove { i OFDM symbol of i} OFDM symbol (wherein, 0≤i≤11) expression.Group # used in the present invention or port numbering do not have the number order of restriction groups and port just in order to distinguish different groups and port.

In order to understand the present invention better, the present invention is done to describe further below in conjunction with accompanying drawing and specific embodiment.

Embodiment one:

Fig. 1 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 12 DMRS groups.

Open loop DMRS can be mapped to 2,3,9,10} OFDM symbol.If DMRS group 0 to RE (resource element) position that group 11 takies is respectively (x0 to 11, y0 to 11), wherein x representes the subcarrier sequence number index in the RB (Resource Block), and y representes the index of OFDM symbol.{ x (m), y (m) }={ m, (2,3,9,10) }, wherein m=0 to 11.

Optional; In each DMRS group; Can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; Different DMRS groups can adopt the weights of identical or different precodings, and different DMRS groups also can adopt the weights of the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment two:

Fig. 2 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 12 DMRS groups.

Open loop DMRS can be mapped to 2,3,5,6} OFDM symbol.If DMRS group 0 to the RE position that group 11 takies is respectively (x0 to 11, y0 to 11), wherein x representes the subcarrier sequence number index in the RB, and y representes the index of OFDM symbol.{ x (m), y (m) }={ m, (2,3,5,6) }, wherein m=0 to 11.

Optional, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port; In each DMRS, comprise two DMRS ports, at this moment can adopt the walsh sign indicating number to be positioned at { 2,3; 5, on 6} OFDM symbol on adjacent two pilot resource element of same sub-carrier the multiplexing walsh sign indicating number of two ports can adopt [1,1]; [1 ,-1].Different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment three:

Fig. 3 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,3,5,6} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment four:

Fig. 4 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,3,9,10} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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}={ (7,11) (2,3,9; 10) }, optional, in each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment five:

Fig. 5 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,3,5,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (1,5), (2,3; 5,6) }, { x1, y1}={{ (7,11) (2; 3,5,6) }, optional; In each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment six:

Fig. 6 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,3,9,10} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (1,5), (2; 3,9,10) }, { x1; Y1}={ (7,11), (2,3; 9,10) }, optional, in each DMRS group; Can adopt the next multiplexing different DMRS port of mode of TDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment seven:

Fig. 7 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,3,5,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={{ (0,4), (2,3) }; { (1,5), (5,6) } }, { x1; Y1}={{ (1,5), (2,3) }, { (7; 11), (5,6) }, optional; In each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment eight:

Fig. 8 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,3,9,10} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={{ (0,4), (2,3) }; { (1,5), (9,10) } }, { x1; Y1}={{ (1,5), (2,3) }, { (7; 11), (9,10) }, optional; In each DMRS group, can adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, and identical DMRS group adopts the weights of the identical layer of identical precoding weights and/or identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment nine:

Fig. 9 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,3,5,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (0,5), (2; 3,5,6) }, { x1; Y1}={ (6,11), (2,3; 5,6) }, optional, in each DMRS group; Can adopt the next multiplexing different DMRS port of mode of TDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment ten:

Figure 10 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,3,9,10} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (0,5), (2; 3,9,10) }, { x1; Y1}={ (6,11), (2,3; 9,10) }, optional, in each DMRS group; Can adopt the next multiplexing different DMRS port of mode of TDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 11:

Figure 11 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.X0, y0}={ (0,1,4; 5), (2,6) }, { x1; Y1}={ (6,7,10,11); (2,6) }, optional, in each DMRS group; Can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 12:

Figure 12 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (0,1,4,5), (2,5) }; { x1, y1}={ (6,7,10,11), (2,5) }; { x2, y2}={ (0,1,4,5), (6,10) }; { x3, y3}={ (6,7,10,11), (6; 10) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 13:

Figure 13 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (0,1), (2,6) }; { x1, y1}={ (4,5), (2,6) }; { x2, y2}={ (6,7), (2,6) }; { x3, y3}={ (10,11), (2,6) }; Optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 14:

Figure 14 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 15:

Figure 15 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.X0, y0}={ (0,1,3; 4), (2,6) }, { x1; Y1}={ (7,8,10,11); (2,6) }, optional, in each DMRS group; Can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 16:

Figure 16 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 17:

Figure 17 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (0,1), (2,6) }; { x1, y1}={ (3,4), (2,6) }; { x2, y2}={ (7,8), (2,6) }; { x3, y3}={ (10,11), (2,6) }; Optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 18

Figure 18 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 19:

Figure 19 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.X0, y0}={ (1,2,4; 5), (2,6) }, { x1; Y1}={ (7,8,10,11); (2,6) }, optional, in each DMRS group; Can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 20:

Figure 20 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 21:

Figure 21 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={ (1,2), (2,6) }; { x1, y1}={ (4,5), (2,6) }; { x2, y2}={ (7,8), (2,6) }; { x3, y3}={ (10,11), (2,6) }; Optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 22:

Figure 22 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 23:

Figure 23 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 2 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 1 takies is respectively (x0 to 1, y0 to 1), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ x0, y0}={{ (0,1,3,4), 2}; { (1,2,4,5), 6}}, { x1; Y1}={{ (6,7,9,10), 2}; { (7,8,10,11), 6}}; Optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 24:

Figure 24 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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}}, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 25:

Figure 25 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,6} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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} is optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, and different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 26:

Figure 26 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,10} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.X0, and y0}={{ (0,1), 2}, (1,2), 5}}, and 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}}, and x6, y6}={{ (6; 7), 6}, { (7,8), 10}}, { x7, y7}={{ (9,10); 6}, and (10,11), 10}} is optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, and different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 27:

Figure 27 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 28:

Figure 28 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 29:

Figure 29 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 30:

Figure 30 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 31:

Figure 31 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 32:

Figure 32 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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) }, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 33:

Figure 33 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 4 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 3 takies is respectively (x0 to 3, y0 to 3), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.{ 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}}, optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Embodiment 34:

Figure 34 has provided the pattern of open loop DMRS one group of pilot tone in a sub-frame, comprising 8 DMRS groups.

Open loop DMRS can be mapped to 2,5,6,9} OFDM symbol.If DMRS group 0 to the RE position that group 7 takies is respectively (x0 to 7, y0 to 7), wherein x representes the index of the relative subcarrier sequence number OFDM symbol in the RB, and y representes the index of OFDM symbol.X0, and y0}={{ (0,1), 2}, (1,2), 5}}, and 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}}, and x6, y6}={{ (6; 7), 6}, { (7,8), 9}}, { x7, y7}={{ (9,10); 6}, and (10,11), 9}} is optional, in each DMRS group, can adopt the next multiplexing different DMRS port of mode of FDM and/or CDM, and different DMRS groups can adopt the weights of identical and/or different precodings and/or the weights that different DMRS groups adopts the different layers of identical precoding weights, the weights of the weights of the identical DMRS group identical precoding weights of employing and/or the identical layer of identical precoding weights or the different layers of identical precoding weights.Can adopt walsh sign indicating number [1,1] when adopting the different DMRS port of resource in the multiplexing same DMRS group of CDM, [1 ,-1] is [1,1,1,1] perhaps, [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

Can know that in conjunction with above-mentioned each embodiment the present invention handles the operation thinking of the reference signal of open loop MIMO system can represent flow process shown in figure 35, this flow process may further comprise the steps:

Step 3501: in special subframe, utilize CDM and/or TDM and/or FDM technology, multiplexing not on the same group open loop DMRS on the one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbol.

Step 3502: use identical or different weights on the same group open loop DMRS not, carry out corresponding weighted.Particularly, said weights comprise precoding weights and/or beam shaping weights, and said weighted then comprises: use said precoding weights and/or beam shaping weights to carry out corresponding precoding and/or beam shaping processing.

In order to guarantee that above-mentioned each embodiment and operation thinking can realize smoothly, can carry out setting shown in figure 36.Referring to Figure 36, Figure 36 is the reference signal treatment system figure of the open loop MIMO system of the embodiment of the invention, and this system comprises continuous open loop DMRS Multiplexing Unit, weighting processing unit.

When practical application, open loop DMRS Multiplexing Unit can be in special subframe, utilize CDM and/or TDM and/or FDM technology, multiplexing not on the same group open loop DMRS on the one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbol.Weighting processing unit then can be used identical or different weights on the same group open loop DMRS not, carries out corresponding weighted.

Visible in sum; No matter be method or system; The reference signal processing method of the open loop MIMO system that the present invention proposes, based on the pilot design that DMRS carries out open loop, the precoding weights of network side or the weights of beam shaping can not receive the restriction of code book; Greatly improve the accuracy of precoding or beam shaping weights, can on the basis that does not increase UE implementation complexity and testing complex degree and resource consumption, improve the performance of UE under open loop mode as far as possible.

The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.

Claims (26)

1. the reference signal processing method of an open loop multiple-input and multiple-output mimo system is characterized in that, this method comprises:

In special subframe, utilize CDM and/or TDM and/or FDM technology, multiplexing not on the same group open loop DMRS on the one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbol; Use identical or different weights on the same group open loop DMRS not, carry out corresponding weighted.

2. method according to claim 1 is characterized in that,

The OFDM symbol that carries open loop DMRS be the 2,3,9,10} OFDM symbol.

3. method according to claim 2 is characterized in that,

Open loop DMRS is carried on the { 2; 3} and { 9; On the 0th to 11 number of sub-carrier of 10} OFDM symbol; Wherein carry identical or different DMRS groups on the 0th to 11 number of sub-carrier respectively, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 9, the { 0,1,4 of 10} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 4} number of sub-carrier DMRS group 0, the 1, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 7, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 10} number of sub-carrier.

4. method according to claim 3 is characterized in that,

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 9, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 9, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 10} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1,1;-1], [1 ,-1 ,-1; 1], perhaps every 2k DMRS group and 2k+1 DMRS group are a precoding group, and the different DMRS groups in the same precoding group use the weights of the different layers of identical precoding to carry out precoding, and wherein k is a nonnegative integer.

5. method according to claim 2 is characterized in that,

Open loop DMRS be carried on the 2, and 3} with 9, the { 1 of 10} OFDM symbol; 5,7, on the 11} number of sub-carrier; Wherein the 1, carry DMRS group 0, the { 7 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 9, the { 0 of 10} OFDM symbol; 5,6, on the 11} number of sub-carrier; Wherein the 0, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

6. method according to claim 5 is characterized in that,

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 9, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 9, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 10} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1; 1 ,-1], [1 ,-1;-1,1], and/or the pilot resources on the different pilot sub-carriers in the same DMRS group adopts the weights of the different layers of identical precoding, and the pilot resources on the same pilot sub-carrier adopts the weights of the identical layer of identical precoding.

7. method according to claim 2 is characterized in that,

Open loop DMRS be carried on 2, and 3} 0,4,6,10} number of sub-carrier and { 9; 10} OFDM symbol 1,5,7, on the 11} number of sub-carrier, wherein the { 0; 1,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

8. method according to claim 7 is characterized in that,

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number be positioned at 2,3} and/or 9, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, on 3} the OFDM symbol the 0} number of sub-carrier and 9, { multiplexing greater than two ports on four pilot resource element on the 1} number of sub-carrier, { 2 on 10} OFDM symbol the; On 3} the OFDM symbol the 4} number of sub-carrier with 9, on 10} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 5} number of sub-carrier, be positioned at 2, { 6} number of sub-carrier and { 9 on 3} the OFDM symbol; On 10} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 7} number of sub-carrier, and be positioned at 2, on 3} the OFDM symbol the 10} number of sub-carrier with 9, { multiplexing greater than two ports on four pilot resource element on the 11} number of sub-carrier on 10} OFDM symbol the; The walsh sign indicating number adopts [1,1,1,1]; [1,1 ,-1 ,-1]; [1 ,-1,1 ,-1]; [1 ,-1 ,-1,1]; And/or { 2, { the 0} number of sub-carrier is with { 9, the { the 1} number of sub-carrier is a precoding layer group 0 on 10} the OFDM symbol on 3} the OFDM symbol the; { 2, { the 4} number of sub-carrier is with { 9, the { the 5} number of sub-carrier is a precoding layer group 1 on 10} the OFDM symbol on 3} the OFDM symbol the; { 2; On 3} the OFDM symbol the 6} number of sub-carrier with 9, on 10} the OFDM symbol the 7} number of sub-carrier is a precoding layer group 2, { 2; { the 10} number of sub-carrier is with { 9, the { the 11} number of sub-carrier is a precoding layer group 3 on 10} the OFDM symbol on 3} the OFDM symbol the; Use the weights of the different layers of identical precoding weights to carry out precoding processing between the different layers group in same DMRS group, the weights that are positioned at the identical layer of the identical precoding weights of use within the different layers group of same DMRS group carry out precoding processing.

9. method according to claim 1 is characterized in that,

The OFDM symbol that carries open loop DMRS be the 2, and 3} with 5,6} OFDM symbol.

10. method according to claim 9 is characterized in that,

Open loop DMRS is carried on the { 2; 3} and { 5; On the 0th to 11 number of sub-carrier of 6} OFDM symbol; Wherein carry identical or different DMRS groups on the 0th to 11 number of sub-carrier respectively, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 5, the { 0,1,4 of 6} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

11. method according to claim 10 is characterized in that,

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 5, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol; The wa1sh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 5, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 6} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1,1;-1], [1 ,-1 ,-1; 1], perhaps every 2k DMRS group and 2k+1 DMRS group are a precoding group, and the different DMRS groups in the same precoding group use the weights of the different layers of identical precoding to carry out precoding, and wherein k is a nonnegative integer.

12. method according to claim 9 is characterized in that,

Open loop DMRS be carried on the 2, and 3} with 5, the { 1 of 6} OFDM symbol; 5,7, on the 11} number of sub-carrier; Wherein the 1, carry DMRS group 0, the { 7 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2, and 3} with 5, the { 0 of 6} OFDM symbol; 5,6, on the 11} number of sub-carrier; Wherein the 0, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; Carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

13. method according to claim 12 is characterized in that,

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number come to be positioned at respectively 2,3} and/or 5, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, and 3} with 5, multiplexing greater than two ports on four pilot resource element of same sub-carrier on 6} OFDM symbol, walsh sign indicating number employing [1; 1,1,1], [1,1;-1 ,-1], [1 ,-1; 1 ,-1], [1 ,-1;-1,1], and/or the pilot resources on the different pilot sub-carriers in the same DMRS group adopts the weights of the different layers of identical precoding, and the pilot resources on the same pilot sub-carrier adopts the weights of the identical layer of identical precoding.

14. method according to claim 9 is characterized in that,

Open loop DMRS be carried on 2, and 3} OFDM symbol 0,4,6,10} number of sub-carrier and { 5; 6} OFDM symbol 1,5,7, on the 11} number of sub-carrier, wherein the { 0; 1,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

15. method according to claim 14 is characterized in that,

In each DMRS group, adopt the mode of TDM and/or CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports; At this moment adopt the walsh sign indicating number be positioned at 2,3} and/or 5, two ports multiplexing on adjacent two pilot resource element of same sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise greater than two DMRS ports, at this moment adopt the walsh sign indicating number be positioned at 2, { 0} number of sub-carrier and { 5, { multiplexing greater than two ports on four pilot resource element on the 1} number of sub-carrier is positioned at { 2 on 6} OFDM symbol the on 3} the OFDM symbol the; On 3} the OFDM symbol the 4} number of sub-carrier with 5, on 6} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 5} number of sub-carrier, be positioned at 2, { 6} number of sub-carrier and { 5 on 3} the OFDM symbol; On 6} OFDM symbol the multiplexing greater than two ports on four pilot resource element on the 7} number of sub-carrier, and be positioned at 2, on 3} the OFDM symbol the 10} number of sub-carrier with 5, { multiplexing greater than two ports on four pilot resource element on the 11} number of sub-carrier on 6} OFDM symbol the; The walsh sign indicating number adopts [1,1,1,1]; [1,1 ,-1 ,-1]; [1 ,-1,1 ,-1]; [1 ,-1 ,-1,1]; And/or { 2, { the 0} number of sub-carrier is with { 5, the { the 1} number of sub-carrier is a precoding layer group 0 on 6} the OFDM symbol on 3} the OFDM symbol the; { 2, { the 4} number of sub-carrier is with { 5, the { the 5} number of sub-carrier is a precoding layer group 1 on 6} the OFDM symbol on 3} the OFDM symbol the; { 2; On 3} the OFDM symbol the 6} number of sub-carrier with 5, on 6} the OFDM symbol the 7} number of sub-carrier is a precoding layer group 2, { 2; { the 10} number of sub-carrier is with { 5, the { the 11} number of sub-carrier is a precoding layer group 3 on 6} the OFDM symbol on 3} the OFDM symbol the; Use the weights of the different layers of identical precoding weights to carry out precoding processing between the different layers group in same DMRS group, the weights that are positioned at the identical layer of the identical precoding weights of use within the different layers group of same DMRS group carry out precoding processing.

16. method according to claim 1 is characterized in that,

Open loop DMRS be carried on 2, on 6} the OFDM symbol.

17. method according to claim 16 is characterized in that,

Open loop DMRS be carried on OFDM 2, the { 0,1,4,5 of 6} OFDM symbol; 6,7,10, on the 11} number of sub-carrier, wherein the { 0; 1,4, carry DMRS group 0, the { 6,7 on the 5} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on OFDM 2, the { 0,1,4,5 of 6} OFDM symbol; 6,7,10, on the 11} number of sub-carrier, wherein the { 0; { 4, { 6, carrying DMRS organizes 2 to carrying DMRS group 0, the on the 1} number of sub-carrier on the 7} number of sub-carrier to carry DMRS group 1, the on the 5} number of sub-carrier; The 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 7,8,10, on the 11} number of sub-carrier, wherein the { 0; 1,3, carry DMRS group 0, the { 7,8 on the 4} number of sub-carrier; 10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 7,8,10, on the 11} number of sub-carrier, wherein the { 0; { 3, { 7, carrying DMRS organizes 2 to carrying DMRS group 0, the on the 1} number of sub-carrier on the 8} number of sub-carrier to carry DMRS group 1, the on the 4} number of sub-carrier; The 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on the 2} OFDM symbol the 0,1,3,4,6,7,9, and on the 10} number of sub-carrier with { the { 1 of 6} OFDM symbol; 2,4,5,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS is carried on { the { 0,1,3,4,6 of 2} OFDM symbol; 7,9, on the 10} number of sub-carrier with { the { 1,2 of 6} OFDM symbol; 4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 6} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 6} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 6} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 6} OFDM symbol 10, and carry DMRS group 3 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

18. according to claim 16 or 17 described methods, it is characterized in that,

In each DMRS group; Adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { two ports multiplexing on two pilot resource element of adjacent sub-carrier on 6} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 6} OFDM symbol multiplexing greater than two-port on adjacent four pilot resource element on the same DMRS group on the same OFDM symbol greater than two DMRS ports; The walsh sign indicating number adopts [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

19. method according to claim 1 is characterized in that,

Open loop DMRS be carried on 2,5,6, on 10} the OFDM symbol.

20. method according to claim 19 is characterized in that,

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 10} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 10} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 4, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 7} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 10} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 10} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4,6,7,9 of 6} OFDM symbol; On the 10} number of sub-carrier with the 5, the { 1,2,4,5,7,8,10 of 10} OFDM symbol; On the 11} number of sub-carrier, wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 6,7,9, on the 10} number of sub-carrier with the 5, the { 1 of 10} OFDM symbol; 2,4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 5} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 5} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 5} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 5} OFDM symbol 10, carry on the 11} number of sub-carrier DMRS group 3, the on 6} OFDM symbol 0,1} number of sub-carrier and the { the { 1 on 10} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 5 to the on 10} OFDM symbol to 4} number of sub-carrier and the to the on 6} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 4, the on the 2} number of sub-carrier; The the on 6} OFDM symbol 6,7} number of sub-carrier and the on 10} OFDM symbol 7, carry DMRS group 6, the { the { 9 on 6} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 10} OFDM symbol 10, and carry DMRS group 7 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

21. according to claim 19 or 20 described methods, it is characterized in that,

In each DMRS group; Adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { two ports multiplexing on two pilot resource element of adjacent sub-carrier on 10} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { multiplexing greater than two-port on adjacent four pilot resource element that same DMRS organizes on the same OFDM symbol on 10} OFDM symbol greater than two DMRS ports; The walsh sign indicating number adopts [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

22. method according to claim 1 is characterized in that,

Open loop DMRS be carried on 2,5,6, on 9} the OFDM symbol.

23. method according to claim 22 is characterized in that,

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 9} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0,1,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on OFDM 2,5,6, the { 0,1,4 of 9} OFDM symbol; 5,6,7,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 4, carry DMRS group 1, the { 6 on the 5} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 7} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 9} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0,1,3, carry DMRS group 0, the { 7 on the 4} number of sub-carrier; 8,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2,5,6, the { 0,1,3 of 9} OFDM symbol; 4,7,8,10, on the 11} number of sub-carrier; Wherein the 0, carry on the 1} number of sub-carrier DMRS group 0, the 3, carry DMRS group 1, the { 7 on the 4} number of sub-carrier; { 10, carrying DMRS group 3 on the 11} number of sub-carrier adopts identical precoding or beam shaping weights in each DMRS group, adopts identical or different precoding or beam shaping weights between DMRS organizes to carry DMRS group 2, the on the 8} number of sub-carrier; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4,6,7,9 of 6} OFDM symbol; On the 10} number of sub-carrier with the 5, the { 1,2,4,5,7,8,10 of 9} OFDM symbol; On the 11} number of sub-carrier, wherein the 0,1,2,3,4, carry DMRS group 0, the { 6 on the 5} number of sub-carrier; 7,8,9,10, carry DMRS group 1 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group; Perhaps,

Open loop DMRS be carried on 2, the { 0,1,3,4 of 6} OFDM symbol; 6,7,9, on the 10} number of sub-carrier with the 5, the { 1 of 9} OFDM symbol; 2,4,5,7,8; 10, on the 11} number of sub-carrier, wherein on 2} OFDM symbol 0,1} number of sub-carrier and { the { 1 on 5} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 1 to the on 5} OFDM symbol to 4} number of sub-carrier and the to the on 2} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 0, the on the 2} number of sub-carrier; The the on 2} OFDM symbol 6,7} number of sub-carrier and the on 5} OFDM symbol 7, carry DMRS group 2, the { the { 9 on 2} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 5} OFDM symbol 10, carry on the 11} number of sub-carrier DMRS group 3, the on 6} OFDM symbol 0,1} number of sub-carrier and the { the { 1 on 9} OFDM symbol; { { 3, { { 4, carrying DMRS organizes 5 to the on 9} OFDM symbol to 4} number of sub-carrier and the to the on 6} OFDM symbol on the 5} number of sub-carrier to carry DMRS group 4, the on the 2} number of sub-carrier; The the on 6} OFDM symbol 6,7} number of sub-carrier and the on 9} OFDM symbol 7, carry DMRS group 6, the { the { 9 on 6} OFDM symbol on the 8} number of sub-carrier; 10} number of sub-carrier and the on 9} OFDM symbol 10, and carry DMRS group 7 on the 11} number of sub-carrier, adopt identical precoding or beam shaping weights in each DMRS group, adopt identical or different precoding or beam shaping weights between the DMRS group.

24. according to claim 22 or 23 described methods, it is characterized in that,

In each DMRS group; Adopt the mode of FDM and/or frequency domain CDM to come multiplexing different DMRS port, in each DMRS group, comprise two DMRS ports, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { two ports multiplexing on two pilot resource element of adjacent sub-carrier on 9} OFDM symbol; The walsh sign indicating number adopts [1; 1], [1 ,-1]; In each DMRS group, comprise, at this moment adopt the walsh sign indicating number to be positioned at { 2} and/or { 5} and/or { 6} and/or { multiplexing greater than two-port on adjacent four pilot resource element that same DMRS organizes on the same OFDM symbol on 9} OFDM symbol greater than two DMRS ports; The walsh sign indicating number adopts [1,1,1,1], [1,1 ,-1 ,-1], [1 ,-1,1 ,-1], [1 ,-1 ,-1,1].

25. the reference signal treatment system of an open loop multiple-input and multiple-output mimo system is characterized in that, this system comprises open loop DMRS Multiplexing Unit, weighting processing unit; Wherein,

Said open loop DMRS Multiplexing Unit is used at special subframe, utilizes CDM and/or TDM and/or FDM technology, multiplexing not on the same group open loop DMRS on the one or more OFDM symbols in the 2nd, 3,5,6,9,10 OFDM symbol;

Said weighting processing unit is used for using identical or different weights on the same group open loop DMRS not, carries out corresponding weighted.

26. system according to claim 25 is characterized in that,

The OFDM symbol that carries open loop DMRS be the 2,3,9,10} OFDM symbol; Perhaps,

The OFDM symbol that carries open loop DMRS be the 2, and 3} with 5,6} OFDM symbol; Perhaps,

Open loop DMRS be carried on 2, on 6} the OFDM symbol; Perhaps,

Open loop DMRS be carried on 2,5,6, on 10} the OFDM symbol; Perhaps,

Open loop DMRS be carried on 2,5,6, on 9} the OFDM symbol.

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