CN103944847A

CN103944847A - Pilot symbol bearing and processing method, and device

Info

Publication number: CN103944847A
Application number: CN201310027148.XA
Authority: CN
Inventors: 郭森宝; 孙云锋; 张文峰; 张峻峰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-01-18
Filing date: 2013-01-18
Publication date: 2014-07-23
Anticipated expiration: 2033-01-18
Also published as: WO2013189410A3; WO2013189410A2; CN103944847B

Abstract

The invention discloses a pilot symbol bearing method. The method comprises steps of mapping one or more DMRS (demodulation reference signal) ports to one or more resources, dividing the plurality of DMRS ports into one or two or four DMRS port groups according to a time domain position or a frequency domain position, and allocating different precoding weights or beamforming weights for the different DMRS port groups, wherein the plurality of DMRS ports in the same DMRS port group adopts a CDM (code division multiplexing) mode to multiplex the same time frequency resources. The invention also discloses a pilot symbol processing method and a device for realizing the above method. According to the technical scheme of the invention, through reasonably allocating the bearing positions of the DMRS in OFDM symbols, cost of the DMRS is reduced, bearing amount of effective data is enhanced, and the quality of receiving end channel demodulation can be ensured.

Description

Frequency pilot sign carrying and processing method, device

Technical field

The present invention relates to the frequency pilot sign bearing technology in Long Term Evolution (LTE, Long Term Evolution) system, relate in particular to a kind of frequency pilot sign carrying and processing method, device.

Background technology

At Long Term Evolution (LTE, Long Term Evolution) in system Release R8/R9, for the quality of channel being measured and the data symbol receiving being carried out to demodulation, designed public reference signal (CRS, Common Reference Signal), subscriber equipment (UE, User Equipment) can carry out channel measurement by CRS, thereby determine that UE carries out cell reselection and is switched to Target cell, and in UE connection status, carry out the measurement of channel quality, when disturbing rank higher, physical layer can disconnect by the relevant wireless link connection failure signaling of high level.In LTE R10, in order further to improve the average availability of frequency spectrum in community, the throughput of the cell edge availability of frequency spectrum and each UE, two kinds of reference signals have been defined respectively: channel state information reference signals (CSI-RS, Channel State Information-Reference Signal) and demodulated reference signal (DMRS, Demodulation Reference Signal), wherein, CSI-RS is for the measurement of channel, by to the measurement of CSI-RS, can calculate UE need to be to base station the pre-coding matrix index (PMI of (eNB) feedback, Precoding Matrix Indicator), channel quality information indication (CQI, Channel Quality Indicator) and order indication (RI, Rank Indicator).Utilize DMRS can make UE downlink data receiving pellucidly, and without the precoding weights of knowing that base station side is applicable, like this, reducing Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel), when load, also reduced the restriction of code book to weights.In addition, DMRS also supports the switching of SU-MIMO and MU-MIMO dynamically transparent, and utilizes the Interference Estimation of DMRS, can greatly improve the interference elimination performance of receiver side.

In R8, utilize CRS to carry out the transmission of TM1～TM6, and for the pattern of this open loop of TM3, also utilize CRS to carry out demodulation, in R9～R10 stage, only to TM1, TM2, TM4～TM6 carries out the optimization based on DMRS transmission, this open loop mode of TM3 is not carried out optimizing based on DMRS.In future version, consider the factors such as energy-conservation, resource saving, CRS need to fade out gradually, so need to design based on DMRS for this sending mode of TM3.

In the environment of following Small Cell, consider the special applications scene that Small Cell is possible, for example, the UE speed of middle low speed, channel circumstance of low frequency choosing etc., can strengthen traditional DMRS, and this enhancing is mainly to consider not reduce reducing the expense of DMRS terminal data detection to strive under the prerequisite of rate, improve resource utilization, thereby improve the average throughput of system.Regrettably, not yet there is at present this type of technical scheme can be for reference.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of frequency pilot sign carrying and processing method, device, can be in OFDM symbol reasonable Arrangement frequency pilot sign, reduced frequency pilot sign and guaranteed communication system performance.

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

A frequency pilot sign bearing method, comprising:

By one or more demodulated reference signal DMRS port mapping on one or more resources;

By time domain or frequency domain position, a plurality of DMRS ports are divided into one or two or four DMRS port set, and be different precoding weights or the beam forming weights of DMRS port assignment on the same group not, a plurality of DMRS ports in identical DMRS port set adopt the multiplexing identical running time-frequency resource of code division multiplexing CDM mode.

Preferably, in technique scheme, described by one or more demodulated reference signal DMRS port mapping on one or more resources, comprising:

DMRS port set is carried on to orthogonal frequency division multiplex OFDM symbol in subframe { on 6,7,13,14}.

Preferably, in technique scheme, described by DMRS port set be carried on OFDM symbol in subframe 6,7,13,14} is upper, comprising:

OFDM symbol 6,7,13,14} the { 2,7} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 12nd subcarrier carrying of 6,7,13,14};

Or, OFDM symbol 6,7,13,14} the { 7,12} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 2nd subcarrier carrying of 6,7,13,14};

Or, OFDM symbol 6,7,13,14} the { 2,12} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 7th subcarrier carrying of 6,7,13,14};

Or, the OFDM symbol { 6,7,13 of odd number Physical Resource Block to PRB Pair, 14} { 2,7} subcarrier carries first DMRS port set, OFDM symbol { 6, second DMRS port set of the 12nd subcarrier carrying of 7,13,14}, the OFDM symbol { 6,7,13 of even number PRB Pair, the 12nd subcarrier of 14} carries first DMRS port set, OFDM symbol { 6,7, { second DMRS port set of 2,7} subcarrier carrying of 13,14};

Or, the OFDM symbol { 6,7,13 of odd number PRB Pair, 14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, second DMRS port set of the 7th subcarrier carrying of 7,13,14}, the OFDM symbol { 6,7,13 of even number PRB Pair, the 7th subcarrier of 14} carries first DMRS port set, OFDM symbol { 6,7, { second DMRS port set of 2,12} subcarrier carrying of 13,14}.

Preferably, in technique scheme, described method also comprises:

When 1 layer of transmission or during 1 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for the transmission of port 7;

When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for the transmission of port 7,8;

When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for port 7,8,9 transmission;

When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for port 7,8,9,10 transmission;

When 5 layers of when transmission, the resource of first DMRS port set is all for port 7,8,11 transmission, and the resource of second port set is all for the transmission of port 9,10; Or when 5 layers of when transmission, the resource of first DMRS port set is all for port 7,8,9,10 transmission, the resource of second port set is all for the transmission of port one 1;

When 6 layers of when transmission, the resource of first DMRS port set is all for port 7,8,11 transmission, and the resource of second port set is all for port 9,10,12 transmission; Or when 6 layers of when transmission, the resource of first DMRS port set is all for port 7,8,9,10 transmission, the resource of second port set is all for the transmission of port one 1,12;

When 7 layers of when transmission, the resource of first DMRS port set is all for port 7,8,11,13 transmission, and the resource of second port set is all for port 9,10,12 transmission; Or when 7 layers of when transmission, the resource of first DMRS port set is all for port 7,8,9,10 transmission, the resource of second port set is all for port one 1,12,13 transmission;

When 8 layers of when transmission, the resource of first DMRS port set is all for port 7,8,11,13 transmission, and the resource of second port set is all for port 9,10,12,14 transmission; Or when 8 layers of when transmission, the resource of first DMRS port set is all for port 7,8,9,10 transmission, the resource of second port set is all for port one 1,12,13,14 transmission.

OFDM symbol the 7th subcarrier of 6,7} and OFDM symbol 13,14} the { 2,12} subcarrier carries first DMRS port set, OFDM symbol { the 6th subcarrier of 6,7} and OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 13,14};

Or, OFDM symbol { the 7th subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, { 2,12} subcarrier and OFDM symbol { second DMRS port set of the 7th subcarrier carrying of 13,14} of 7};

Or, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 1,11} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7};

Or, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 7} subcarrier and OFDM symbol { { second DMRS port set of 2,12} subcarrier carrying of 13,14} of 7};

Or, for odd number PRB Pair, OFDM symbol { the 7th subcarrier and the OFDM symbol { 12 of 6,7}, 13} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the 6th subcarrier of 7} and OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 13,14}; For even number PRB Pair, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 1,11} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7}.

Or, for even number PRB Pair, OFDM symbol { the 7th subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the 6th subcarrier of 7} and OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 13,14}; For working as odd number PRB Pair, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 1,11} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7};

Or { { the 12nd subcarrier of 13,14} carries first DMRS port set to OFDM symbol, OFDM symbol { the 1st subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 11st subcarrier carrying of 13,14} for the 2nd subcarrier of 6,7} and OFDM symbol;

Or { { the 12nd subcarrier of 13,14} carries first DMRS port set to OFDM symbol, OFDM symbol { the 12nd subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 2nd subcarrier carrying of 13,14} for the 2nd subcarrier of 6,7} and OFDM symbol;

Or { { the 2nd subcarrier of 13,14} carries first DMRS port set to OFDM symbol, OFDM symbol { the 11st subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 1st subcarrier carrying of 13,14} for the 12nd subcarrier of 6,7} and OFDM symbol;

Or { { the 2nd subcarrier of 13,14} carries first DMRS port set to OFDM symbol, OFDM symbol { the 2nd subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 12nd subcarrier carrying of 13,14} for the 12nd subcarrier of 6,7} and OFDM symbol;

Or, OFDM symbol { { 2,7} subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 7,12} subcarrier carries first DMRS port set, OFDM symbol { the { 1 of 6,7}, 6} subcarrier and OFDM symbol { { second DMRS port set of 6,11} subcarrier carrying of 13,14};

Or, OFDM symbol { { 7,12} subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 2,7} subcarrier carries first DMRS port set, OFDM symbol { the { 6 of 6,7}, 11} subcarrier and OFDM symbol { { second DMRS port set of 1,6} subcarrier carrying of 13,14}.

Preferably, in technique scheme, described method also comprises:

When 1 layer of transmission or 1 DMRS port transmission, first DMRS port set is for the transmission of port 7;

When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8;

When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set is all for the transmission of port 9;

When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set is all for the transmission of port 9,10;

When 5 layers of transmission or 5 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11, and second DMRS port set is used for the transmission of port 9,10;

When 6 layers of transmission or 6 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11, and second DMRS port set is used for the transmission of port 9,10,12;

When 7 layers of transmission or 7 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11,13, and second DMRS port set is used for the transmission of port 9,10,12;

When 8 layers of transmission or 8 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11,13, and second DMRS port set is used for the transmission of port 9,10,12,14.

Preferably, in technique scheme, when a plurality of DMRS ports are divided into four DMRS port set, described by a plurality of DMRS port mapping on a plurality of resources, comprising:

DMRS port set is carried on to OFDM symbol in subframe { on 6,7}.

Preferably, in technique scheme, described by DMRS port set be carried on OFDM symbol in subframe 6,7} is upper, comprising:

OFDM symbol { 6, the { 1 of 7}, 11} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 2,12} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 6th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 7th subcarrier carrying of 6,7};

Or, the OFDM symbol { 6 of odd number PRB Pair, 7} { 1,11} subcarrier carries first DMRS port set, OFDM symbol { 6, the { 2 of 7}, second DMRS port set of 12} subcarrier carrying, OFDM symbol { the 3rd the DMRS port set of the 6th subcarrier carrying of 6,7}, OFDM symbol { the 4th the DMRS port set of the 7th subcarrier carrying of 6,7};

Or, the OFDM symbol { 6 of even number PRB Pair, the 6th subcarrier of 7} carries first DMRS port set, OFDM symbol { second DMRS port set of the 7th subcarrier carrying of 6,7}, OFDM symbol { 6, { the 3rd DMRS port set of 1,11} subcarrier carrying, the OFDM symbol { 6 of 7}, { the 4th the DMRS port set of 2,12} subcarrier carrying of 7}.

DMRS port set is carried on to OFDM symbol in subframe { on 6,7,12,13}.

Preferably, in technique scheme, described by DMRS port set be carried on OFDM symbol in subframe 6,7,12,13} is upper, comprising:

The OFDM symbol { 6 of odd number PRB Pair, the { 2 of 7}, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 7th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7};

The OFDM symbol { 12 of even number PRB Pair, the { 2 of 13}, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 12,13}, OFDM symbol { 12, the 3rd the DMRS port set of the 7th subcarrier carrying of 13}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 12,13};

Or, the OFDM symbol { 6 of odd number PRB Pair, 7} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the { 1 of 7}, second DMRS port set of 11} subcarrier carrying, OFDM symbol { the 3rd the DMRS port set of the 7th subcarrier carrying of 6,7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7};

The OFDM symbol { 12 of even number PRB Pair, the 7th subcarrier of 13} carries first DMRS port set, OFDM symbol { 12, second DMRS port set of the 6th subcarrier carrying of 13}, OFDM symbol { the { 2 of 12,13}, the 3rd DMRS port set of 12} subcarrier carrying, OFDM symbol { { the 4th the DMRS port set of 1,11} subcarrier carrying of 12,13};

Or, when the subframe of carrying DMRS port set is time division multiplexing TDD type frame, OFDM symbol { the { 2 of 6,7}, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 7th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7}; When the subframe of carrying DMRS port set is frequency division multiplexing FDD type frame, OFDM symbol { 12,13} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 12, the { 1 of 13}, second DMRS port set of 11} subcarrier carrying, OFDM symbol { the 3rd the DMRS port set of the 7th subcarrier carrying of 12,13}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 12,13}.

Preferably, in technique scheme, described method also comprises:

When 1 layer of transmission or during 1 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7, or the resource of first DMRS port set is all for the transmission of port 7;

When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7,8; Or the resource of first DMRS port set is all for the transmission of port 7,8;

When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set and the 4th DMRS port set is all for the transmission of port 9; Or the resource of first DMRS port set is all for the transmission of port 7,8, the resource of second DMRS port set is all for the transmission of port 9;

When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set and the 4th DMRS port set is all for the transmission of port 9,10; Or the resource of first DMRS port set is all for the transmission of port 7,8, the resource of second DMRS port set is all for the transmission of port 9,10;

When 5 layers of transmission or 5 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, and second DMRS port set is used for the transmission of port 9,10, and the 3rd DMRS port set is used for the transmission of port one 1;

When 6 layers of transmission or 6 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, and second DMRS port set is used for the transmission of port 9,10, and the 3rd DMRS port set is used for the transmission of port one 1,12;

When 7 layers of transmission or 7 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, second DMRS port set is used for the transmission of port 9,10, and the 3rd DMRS port set is for port one 1,12 transmission, the 4th DMRS port set is used for the transmission of port one 3;

When 8 layers of transmission or 8 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, second DMRS port set is used for the transmission of port 9,10, and the 3rd DMRS port set is for port one 1,12 transmission, the 4th DMRS port set is used for the transmission of port one 3,14.

In extended cyclic prefix subframe,

By DMRS port set be carried on OFDM symbol in subframe 5,6} is upper, wherein, OFDM symbol 5,6} { 2,5,8,11} subcarrier carries first DMRS port set;

Or, for odd number PRB Pair, OFDM symbol 5,6} { 2,5,8,11} subcarrier carries first DMRS port set; For even number PRB Pair, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS port set;

Or, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS port set;

Or, for odd number PRB Pair, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS port set; For even number PRB Pair, OFDM symbol 5,6} { 2,5,8,11} subcarrier carries first DMRS port set;

Or, by DMRS port set be carried on OFDM symbol in subframe 5,6,11,12} is upper, wherein, OFDM symbol 5,6} 2,8} subcarrier and OFDM symbol 11,12} { 6,12} subcarrier carries first DMRS port set; Or, OFDM symbol 5,6} 2,11} subcarrier and OFDM symbol 11,12} { 3,12} subcarrier carries first DMRS port set.

Preferably, in technique scheme, described method also comprises:

When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8.

Preferably, in technique scheme, described method also comprises:

While carrying a port in a DMRS port set, a port takies all resources in a group, and the CDM code that continuous two resources in a group adopt is the spreading code of [1 1];

While carrying two ports in a DMRS port set, in two ports, any one port takies all resources in a group, the CDM code that continuous two resources of one of them port in a group adopt is the spreading code for [1 1], and the CDM code that continuous two resources of another one port in a group adopt is the spreading code of [1-1];

While carrying three ports in a DMRS port set, in three ports, any one port takies all resources in a group, the CDM code that continuous and/or carrier wave nearest four resources of one of them port in a group adopt is the spreading code of [1 11 1], second port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave be the spreading code of [1 1-1-1], the 3rd port in a group continuously and/or the CDM code of nearest four the resources employings of carrier wave be the spreading code of [1-1 1-1];

While carrying four ports in a DMRS port set, in four ports, any one port takies all resources in a group, the CDM code that continuous and/or carrier wave nearest four resources of one of them port in a group adopt is the spreading code of [1 11 1], second port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave be the spreading code of [1 1-1-1], the 3rd port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave be the spreading code of [1-1 1-1], the 4th port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave be the spreading code of [1-1-1 1].

Preferably, in technique scheme, described method also comprises:

Different PRB Pair adopts different DMRS patterns;

Or, be equally spaced on the identical DMRS pattern of employing on the PRB Pair that has DMRS.

Preferably, in technique scheme, odd number PRB Pair and even number PRB Pair adopt different DMRS patterns.

Preferably, in technique scheme, described method also comprises:

X PRB Pair is divided into Y group, and each the PRB Pair in same group adopts different DMRS patterns, and the identical PRB Pair position in Y group or the PRB Pair of same index adopt identical DMRS pattern.

A frequency pilot sign processing method, comprising:

In one or more resources, receive also demapping and go out one or more demodulated reference signal DMRS ports;

By time domain or frequency domain position, determine one or two or four the DMRS port set under a plurality of DMRS ports, and determine that not DMRS port on the same group distributes different precoding weights or beam forming weight, the multiplexing identical running time-frequency resource of a plurality of DMRS ports employing code division multiplexing CDM mode in identical DMRS port set.

Frequency pilot sign processing method of the present invention, adopts the mode corresponding with aforementioned frequency pilot sign mapping method to carry out the demapping of frequency pilot sign.

A signaling method for demodulated reference signal, comprising:

N DMRS pattern of transmit leg and recipient's predefine, the DMRS pattern that described transmit leg notifies described recipient's descending sub frame to adopt by high-level signaling, and/or, the DMRS pattern that described transmit leg notifies described recipient's descending sub frame to adopt by physical layer signaling, wherein, N is natural number.

Preferably, in technique scheme, the DMRS pattern that described transmit leg notifies recipient's descending sub frame to adopt by physical layer signaling, comprising:

Described transmit leg is reused the bit indication DMRS pattern in DL Grant, or, added bits indication DMRS pattern in DL Grant.

Preferably, in technique scheme, the DMRS pattern that described transmit leg notifies described recipient's descending sub frame to adopt by physical layer signaling, comprising:

Described transmit leg is reused two bit indication DMRS patterns in DL Grant.

Described transmit leg is reused Value of ' PDSCH RE Mapping and Quasi-Co-Location Indicator ' the field1 bit indication DMRS pattern in DL Grant.

Newly-increased 1 bit of described transmit leg or 2 bits are indicated DMRS pattern.

Preferably, in technique scheme, described method also comprises:

Wave frequency and/or carrier index and/or the recessive indication of carrier type DMRS pattern are carried in described transmit leg utilization.

Preferably, in technique scheme, described method also comprises:

Wave frequency and/or carrier index and/or carrier type and the binding of employing DMRS pattern, the corresponding one or more DMRS patterns of each carrier frequency are carried in described transmit leg configuration.

Preferably, in technique scheme, described method also comprises:

Each PRB Pair is carried out to DMRS configuration, and to determining that the PRB Pair of configuration DMRS configures corresponding DMRS pattern.

A signaling method for demodulated reference signal, comprising:

N DMRS pattern of transmit leg and recipient's predefine, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and/or the DMRS pattern that adopts while knowing descending sub frame by physical layer signaling of described recipient.

The signaling method of demodulated reference signal of the present invention adopts the mode demodulated reference signal corresponding with aforementioned Notification Method.

A frequency pilot sign bogey, comprises map unit and allocation units, wherein:

Map unit, for by one or more demodulated reference signal DMRS port mapping to one or more resources;

Allocation units, for a plurality of DMRS ports being divided into one or two or four DMRS port set by time domain or frequency domain position, and be different precoding weights or the beam forming weights of DMRS port assignment on the same group not, a plurality of DMRS ports in identical DMRS port set adopt the multiplexing identical running time-frequency resource of code division multiplexing CDM mode.

A frequency pilot sign processing unit, comprises demapping unit and determining unit, wherein:

Demapping unit, goes out one or more demodulated reference signal DMRS ports for receive also demapping in one or more resources;

Determining unit, for determine one or two or four the DMRS port set under a plurality of DMRS ports by time domain or frequency domain position, and determine that not DMRS port on the same group distributes different precoding weights or beam forming weight, the multiplexing identical running time-frequency resource of a plurality of DMRS ports employing code division multiplexing CDM mode in identical DMRS port set.

In the present invention, by one or more DMRS port mapping on one or more resources; By time domain or frequency domain position, a plurality of DMRS ports are divided into one or two or four DMRS port set, and be different precoding weights or the beam forming weights of DMRS port assignment on the same group not, a plurality of DMRS ports in identical DMRS port set adopt the multiplexing identical running time-frequency resource of CDM mode.Technical scheme of the present invention, by reasonably distributing the carrying position of DMRS in OFDM symbol, reduces the expense of DMRS, has promoted the bearing capacity of valid data, and can guarantee the quality of receiving terminal channel demodulation.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 1;

Fig. 2 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 2;

Fig. 3 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 3;

Fig. 4 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 4;

Fig. 5 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 5;

Fig. 6 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 6;

Fig. 7 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 7;

Fig. 8 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 8;

Fig. 9 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 9;

Figure 10 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 10;

Figure 11 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 11;

Figure 12 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 12;

Figure 13 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 13;

Figure 14 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 14;

Figure 15 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 15;

Figure 16 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 16;

Figure 17 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 17;

Figure 18 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 18;

Figure 19 is the schematic diagram of normal cyclic prefix DMRS group mapping pattern 19;

Figure 20 is the schematic diagram of extended cyclic prefix DMRS group mapping pattern 1;

Figure 21 is the schematic diagram of extended cyclic prefix DMRS group mapping pattern 2;

Figure 22 is the schematic diagram of extended cyclic prefix DMRS group mapping pattern 3;

Figure 23 is the schematic diagram of extended cyclic prefix DMRS group mapping pattern 4;

Figure 24 is the composition structural representation of the frequency pilot sign bogey of the embodiment of the present invention;

Figure 25 is the composition structural representation of the frequency pilot sign processing unit of the embodiment of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearer, by the following examples and with reference to accompanying drawing, the present invention is described in more detail.

Embodiment mono-

Fig. 1 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

Carrying DMRS OFDM symbol in a subframe, be OFDM symbol 6,7,13,14}, wherein, OFDM symbol 6,7,13,14} { 2,7} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 12nd subcarrier carrying of 6,7,13,14}.

Or, OFDM symbol 6,7,13,14} the { 7,12} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 2nd subcarrier carrying of 6,7,13,14}.

When 1 layer of transmission or during 1 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for the transmission of port 7.When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for the transmission of port 7,8.When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for port 7,8,9 transmission.When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for port 7,8,9,10 transmission.When 5 layers of when transmission, the resource of first DMRS port set is all for port 7,8,11 transmission, and the resource of second port set is all for the transmission of port 9,10,

Or when 5 layers of when transmission, the resource of first DMRS port set is all for port 7,8,9,10 transmission, the resource of second port set is all for the transmission of port one 1.

When 6 layers of when transmission, the resource of first DMRS port set is all for 7,8, and the resource of 11, the second port set is all for port 9,10,12 transmission.

Or when 6 layers of when transmission, the resource of first DMRS port set is all for 7,8, the resource of 9,10, second port set is all for the transmission of port one 1,12.

When 7 layers of when transmission, the resource of first DMRS port set is all for 7,8, and the resource of 11,13 second port set is all for port 9,10,12 transmission.

Or when 7 layers of when transmission, the resource of first DMRS port set is all for 7,8, the resource of 9,10, second port set is all for port one 1,12,13 transmission.

When 8 layers of when transmission, the resource of first DMRS port set is all for 7,8, and the resource of 11,13 second port set is all for port 9,10,12,14 transmission.

Or when 8 layers of when transmission, the resource of first DMRS port set is all for 7,8, the resource of 9,10, second port set is all for port one 1,12,13,14 transmission.

While carrying a port in a DMRS port set, a port takies all resources in a group, and the CDM code that continuous two resources in a group adopt carries out spread processing for [1 1].While carrying two ports in a DMRS port set, in two ports, any one port takies all resources in a group, the CDM code that continuous two resources of one of them port in a group adopt is separated spread processing for [1 1], and the CDM code that continuous two resources of another one port in a group adopt is separated spread processing for [1-1].While carrying three ports in a DMRS port set, in three ports, any one port takies all resources in a group, the CDM code that continuous and/or carrier wave nearest four resources of one of them port in a group adopt is separated spread processing for [1 11 1], second port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1 1-1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects), the 3rd port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1-1 1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects).While carrying four ports in a DMRS port set, in four ports, any one port takies all resources in a group, the CDM code that continuous and/or carrier wave nearest four resources of one of them port in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side reception detects) for [11 1 1], second port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1 1-1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects), the 3rd port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1-1 1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects), the 4th port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1-1-1 1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects).

Embodiment bis-

Fig. 2 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

Carrying DMRS OFDM symbol in a subframe can for OFDM symbol 6,7,13,14}, wherein OFDM symbol { 6,7,13,14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 7th subcarrier carrying of 6,7,13,14}.

When 1 layer of transmission or during 1 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for the transmission of port 7.When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for the transmission of port 7,8.When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for port 7,8,9 transmission.When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set and second DMRS port set is all for port 7,8,9,10 transmission.When 5 layers of when transmission, the resource of first DMRS port set is all for port 7,8,11 transmission, and the resource of second port set is all for the transmission of port 9,10.

While carrying a port in a DMRS port set, a port takies all resources in a group, and the CDM code that continuous two resources in a group adopt carries out spread processing for [1 1].While carrying two ports in a DMRS port set, in two ports, any one port takies all resources in a group, the CDM code that continuous two resources of one of them port in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side reception detects) for [1 1], and the CDM code that continuous two resources of another one port in a group adopt carries out spread processing (side transmission is sent out in base station)/solution spread processing (end side receives and detects) for [1-1].While carrying three ports in a DMRS port set, in three ports, any one port takies all resources in a group, the CDM code that continuous and/or carrier wave nearest four resources of one of them port in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side reception detects) for [1 11 1], second port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1 1-1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects), the 3rd port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1-1 1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects).While carrying four ports in a DMRS port set, in four ports, any one port takies all resources in a group, the CDM code that continuous and/or carrier wave nearest four resources of one of them port in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side reception detects) for [1 11 1], second port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1 1-1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects), the 3rd port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1-1 1-1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects), the 4th port in a group continuously and/or the CDM code that adopts of four nearest resources of carrier wave for [1-1-1 1], carry out spread processing (base station is sent out side and sent)/separate spread processing (end side receives and detects).

Embodiment tri-

Fig. 3 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,13 in a subframe, 14}, wherein the OFDM symbol { 6,7 of odd number PRB Pair, 13,14} { 2,7} subcarrier carries first DMRS port set, OFDM symbol { 6,7, second DMRS port set of the 12nd subcarrier carrying of 13,14}, the OFDM symbol { 6 of even number PRB Pair, 7, the 12nd subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6,7, { second DMRS port set of 2,7} subcarrier carrying of 13,14}.

Embodiment tetra-

Fig. 4 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,13 in a subframe, 14}, wherein the OFDM symbol { 6,7 of odd number PRB Pair, 13,14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6,7, second DMRS port set of the 7th subcarrier carrying of 13,14}, the OFDM symbol { 6 of even number PRB Pair, 7, the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6,7, { second DMRS port set of 2,12} subcarrier carrying of 13,14}.

Embodiment five

Fig. 5 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6 in a subframe, 7}, wherein OFDM symbol { the { 2 of 6,7}, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 7th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7}.

When 1 layer of transmission or during 1 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7.

Or when 1 layer of transmission or during 1 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7.

When 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7,8.

Or when 2 layers of transmission or during 2 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8.

When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set and the 4th DMRS port set is all for the transmission of port 9.

Or when 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8, the resource of second DMRS port set is all for the transmission of port 9.

When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set and the 3rd DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set and the 4th DMRS port set is all for the transmission of port 9,10.

Or when 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8, the resource of second DMRS port set is all for the transmission of port 9,10.

When 5 layers of transmission or 5 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, and second DMRS port set is used for the transmission of port 9,10.The 3rd DMRS port set is used for the transmission of port one 1.

When 6 layers of transmission or 6 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, and second DMRS port set is used for the transmission of port 9,10.The 3rd DMRS port set is used for the transmission of port one 1,12.

When 7 layers of transmission or 7 DMRS port transmission, first DMRS port set is for the transmission of port 7,8, second DMRS port set is used for the transmission of port 9,10, and the 3rd DMRS port set is for port one 1,12 transmission, the 4th DMRS port set is used for the transmission of port one 3.

Embodiment six

Fig. 6 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6 in a subframe, 7}, wherein OFDM symbol { the { 2 of 6, the 7} of odd number PRB Pair, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 7th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7}.The OFDM symbol { 6 of even number PRB Pair, the 7th subcarrier of 7} carries first DMRS port set, OFDM symbol { 6, second DMRS port set of the 6th subcarrier carrying of 7}, OFDM symbol { the { 2 of 6,7}, the 3rd DMRS port set of 12} subcarrier carrying, OFDM symbol { { the 4th the DMRS port set of 1,11} subcarrier carrying of 6,7}.

Embodiment seven

Fig. 7 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,12 in a subframe, 13}, wherein OFDM symbol { the { 2 of 6, the 7} of odd number PRB Pair, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 7th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 67th subcarrier carrying of 6,7}.The OFDM symbol { 12 of even number PRB Pair, the { 2 of 13}, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 12,13}, OFDM symbol { 12, the 3rd the DMRS port set of the 7th subcarrier carrying of 13}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 12,13}.

Embodiment eight

Fig. 8 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,12 in a subframe, 13}, wherein OFDM symbol { the { 2 of 6, the 7} of odd number PRB Pair, 12} subcarrier carries first DMRS port set, OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 6,7}, OFDM symbol { 6, the 3rd the DMRS port set of the 7th subcarrier carrying of 7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7}.The OFDM symbol { 12 of even number PRB Pair, the 7th subcarrier of 13} carries first DMRS port set, OFDM symbol { 12, second DMRS port set of the 6th subcarrier carrying of 13}, OFDM symbol { the { 2 of 12,13}, the 3rd DMRS port set of 12} subcarrier carrying, OFDM symbol { { the 4th the DMRS port set of 1,11} subcarrier carrying of 12,13}.

Embodiment nine

Fig. 9 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,12 in a subframe, 13}, wherein when subframe type used is TDD, OFDM symbol { 6,7} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the { 1 of 7}, second DMRS port set of 11} subcarrier carrying, OFDM symbol { the 3rd the DMRS port set of the 7th subcarrier carrying of 6,7}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 6,7}.When subframe type used is FDD, OFDM symbol { 12,13} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 12, the { 1 of 13}, second DMRS port set of 11} subcarrier carrying, OFDM symbol { the 3rd the DMRS port set of the 7th subcarrier carrying of 12,13}, OFDM symbol { the 4th the DMRS port set of the 6th subcarrier carrying of 12,13}.

Embodiment ten

Figure 10,11 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6 in a subframe, 7,13,14}, wherein OFDM symbol { 6, the 7th subcarrier of 7} and OFDM symbol 13,14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the 6th subcarrier of 7} and OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 13,14}.

Or, OFDM symbol { the 7th subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, { 2,12} subcarrier and OFDM symbol { second DMRS port set of the 7th subcarrier carrying of 13,14} of 7}.

When 1 layer of transmission or 1 DMRS port transmission, first DMRS port set is for the transmission of port 7.

When 3 layers of transmission or during 3 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set is all for the transmission of port 9.

When 4 layers of transmission or during 4 DMRS port transmission, the resource of first DMRS port set is all for the transmission of port 7,8, and the resource of second DMRS port set is all for the transmission of port 9,10.

When 5 layers of transmission or 5 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11, and second DMRS port set is used for the transmission of port 9,10.

When 6 layers of transmission or 6 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11, and second DMRS port set is used for the transmission of port 9,10,12.

When 7 layers of transmission or 7 DMRS port transmission, first DMRS port set is for the transmission of port 7,8,11,13, and second DMRS port set is used for the transmission of port 9,10,12.

Embodiment 11

Figure 12 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6 in a subframe, 7,13,14}, wherein OFDM symbol { 6,7} { { the 7th subcarrier of 13,14} carries first DMRS port set for 2,12} subcarrier and OFDM symbol, OFDM symbol { 6, { 2,12} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7}.

Or, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 7} subcarrier and OFDM symbol { { second DMRS port set of 2,12} subcarrier carrying of 13,14} of 7}

Embodiment 12

Figure 13 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,13 in a subframe, 14}, wherein when odd number PRB Pair, OFDM symbol { the 7th subcarrier and the OFDM symbol { 13 of 6,7}, the { 2 of 14}, 12} subcarrier carries first DMRS port set, OFDM symbol { the 6th subcarrier and the OFDM symbol { 13 of 6,7}, { second DMRS port set of 1,11} subcarrier carrying of 14}.When even number PRB Pair, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 1,11} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7}.

Embodiment 13

Figure 14 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,13 in a subframe, 14}, wherein, for even number PRB Pair, OFDM symbol { 6, the 7th subcarrier of 7} and OFDM symbol 13,14} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the 6th subcarrier of 7} and OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 13,14}; For working as odd number PRB Pair, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 1,11} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7}.

Embodiment 14

Figure 15,19 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6 in a subframe, 7,13,14}, wherein OFDM symbol { the 2nd subcarrier and the OFDM symbol { 12 of 6,7}, the 12nd subcarrier of 13} carries first DMRS port set, OFDM symbol { the 1st subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 11st subcarrier carrying of 12,13}.

Or { { the 12nd subcarrier of 13,14} carries first DMRS port set to OFDM symbol, OFDM symbol { the 12nd subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 2nd subcarrier carrying of 13,14} for the 2nd subcarrier of 6,7} and OFDM symbol.

Embodiment 15

Figure 16 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6 in a subframe, 7,13,14}, wherein OFDM symbol { the 12nd subcarrier and the OFDM symbol { 12 of 6,7}, the 2nd subcarrier of 13} carries first DMRS port set, OFDM symbol { the 11st subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 1st subcarrier carrying of 12,13}.

Or { { the 2nd subcarrier of 13,14} carries first DMRS port set to OFDM symbol, OFDM symbol { the 2nd subcarrier of 6,7} and OFDM symbol { second DMRS port set of the 12nd subcarrier carrying of 13,14} for the 12nd subcarrier of 6,7} and OFDM symbol.

Embodiment 16

Figure 17 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,13 in a subframe, 14}, wherein OFDM symbol { the { 2 of 6,7}, 7} subcarrier and OFDM symbol { 13,14} { 7,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the { 1 of 7}, 6} subcarrier and OFDM symbol { { second DMRS port set of 6,11} subcarrier carrying of 13,14}.

Embodiment 17

Figure 18 shows in Normal CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS can be OFDM symbol { 6,7,13 in a subframe, 14}, wherein OFDM symbol { the { 2 of 6,7}, 7} subcarrier and OFDM symbol { 13,14} { 7,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the { 6 of 7}, 11} subcarrier and OFDM symbol { { second DMRS port set of 1,6} subcarrier carrying of 13,14}.

Embodiment 18

Figure 20 left side illustrates in Extended CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

While sending DMRS in the subframe at expansion carrier wave, the OFDM symbol of carrying DMRS can be OFDM symbol { 5,6}, wherein OFDM symbol { { first DMRS port set of 2,5,8,11} subcarrier of 5,6} in a subframe;

Or, for odd number PRB Pair, OFDM symbol 5,6} { 2,5,8,11} subcarrier carries first DMRS group; For even number PRB Pair, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS group;

Or, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS group;

Or, for odd number PRB Pair, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS group; For even number PRB Pair, OFDM symbol 5,6} { 2,5,8,11} subcarrier carries first DMRS group;

Or, by DMRS port set be carried on OFDM symbol in subframe 5,6,11,12} is upper, wherein, OFDM symbol 5,6} 2,8} subcarrier and OFDM symbol 11,12} { 6,12} subcarrier carries first DMRS group; Or, OFDM symbol 5,6} 2,11} subcarrier and OFDM symbol 11,12} { 3,12} subcarrier carries first DMRS group.

While carrying a port in a DMRS port set, a port takies all resources in a group, and the CDM code that continuous two resources in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side receives and detects) for [1 1].While carrying two ports in a DMRS port set, in two ports, any one port takies all resources in a group, the CDM code that continuous two resources of one of them port in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side reception detects) for [1 1], and the CDM code that continuous two resources of another one port in a group adopt carries out spread processing (side transmission is sent out in base station)/solution spread processing (end side receives and detects) for [1-1].

Embodiment 19

Figure 20 shows in Extended CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

While sending DMRS in the subframe at expansion carrier wave, when adopting FDD frame structure to adopt the OFDM symbol of carrying DMRS, in a subframe, can be OFDM symbol { 11,12}, wherein OFDM symbol { { first DMRS port set of 3,6,9,12} subcarrier of 11,12}.When adopting tdd frame structure to adopt the OFDM symbol of carrying DMRS, in a subframe, can be OFDM symbol { 5,6}, wherein OFDM symbol { { first DMRS port set of 2,5,8,11} subcarrier of 5,6}.

Embodiment 20

Figure 21 shows in Extended CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

While sending DMRS in the subframe at expansion carrier wave, the OFDM symbol of carrying DMRS can be OFDM symbol { 5,6} in a subframe when sending on odd number PRB Pair, OFDM symbol { the { 2,5 of 5,6} wherein, first DMRS port set of 8,11} subcarrier.When sending on odd number PRB Pair, can be OFDM symbol { 11,12}, wherein OFDM symbol { { first DMRS port set of 3,6,9,12} subcarrier of 11,12}.

While carrying a port in a DMRS port set, a port takies all resources in a group, and the CDM code that continuous two resources in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side receives and detects) for [11].While carrying two ports in a DMRS port set, in two ports, any one port takies all resources in a group, the CDM code that continuous two resources of one of them port in a group adopt carries out spread processing (base station is sent out side and sent)/solution spread processing (end side reception detects) for [1 1], and the CDM code that continuous two resources of another one port in a group adopt carries out spread processing (side transmission is sent out in base station)/solution spread processing (end side receives and detects) for [1-1].

Embodiment 21

Figure 22 shows in Extended CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

While sending DMRS in the subframe at expansion carrier wave, the OFDM symbol of carrying DMRS can be OFDM symbol { 5,6,11 in a subframe, 12}, wherein OFDM symbol { the { 2 of 5,6}, 8} subcarrier and OFDM symbol 11,12} { 6,12} subcarrier carries first DMRS port set.

Embodiment 22

Figure 23 shows in Extended CP subframe, the pattern of the one group pilot tone of DMRS in a subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

While sending DMRS in the subframe at expansion carrier wave, the OFDM symbol of carrying DMRS can be OFDM symbol { 5,6,11 in a subframe, 12}, wherein OFDM symbol { the { 2 of 5,6}, 11} subcarrier and OFDM symbol 11,12} { 3,12} subcarrier carries first DMRS port set.

Embodiment 23

Figure Figure11 and Figure12 have provided the pattern of the one group pilot tone of DMRS in a subframe in Normal CP subframe.Base station sends DMRS in the position of carrying DMRS, and terminal receives and detect DMRS in the position of carrying DMRS.

The OFDM symbol of carrying DMRS port set can be OFDM symbol { 6 in a subframe, 7, 13, 14}, wherein OFDM symbol { 6, the 7th subcarrier and the OFDM symbol { 12 of 7}, the { 2 of 13}, 12} subcarrier carries first DMRS port set, OFDM symbol { 6, the { 2 of 7}, 12} subcarrier and OFDM symbol { 12, second DMRS port set of the 7th subcarrier carrying of 13}, OFDM symbol { 6, the 6th subcarrier and the OFDM symbol { 12 of 7}, the { 1 of 13}, the 3rd DMRS port set of 11} subcarrier carrying, OFDM symbol { 6, the { 1 of 7}, 11} subcarrier and OFDM symbol { 12, the 4th the DMRS port set of the 6th subcarrier carrying of 13}.

Wherein can adopt any one of four group the insides or transmission and the reception that a plurality of groups is DMRS, wherein DMRS port set is categorized as { 7,8} is first DMRS port set, { 9,10} is second DMRS port set, and { 11,12} is the 3rd DMRS port set, { 13,14} is the 4th DMRS port set.

When low-rank transmits, corresponding ports group resource does not exist DMRS port to be used for transmitting data or PDSCH.

Embodiment 24

Base station and the individual DMRS pattern of terminal predefine N (N > 0), the DMRS pattern that when base station sends descending sub frame by terminal-specific high-level signaling notification terminal, base station adopts, terminal obtains DMRS pattern by obtaining the DMRS pattern indication signaling of base station transmission.

Base station configuration DMRS pattern or predefined pattern at least comprise one of following methods:

The DMRS pattern that each PRB Pair adopts, each PRB Pairs of distribution adopts corresponding pattern.

Have the DMRS pattern of the PRB Pair of DMRS, base station can configure or predefine does not exist PRB Pairs or the subframe of DMRS.

Embodiment 25

Base station and the individual DMRS pattern of terminal predefine N (N > 0), then notification terminal is carried out by carrying wave frequency and/or carrier wave indication and/or carrier type in base station, the DMRS pattern that base station adopts while sending descending sub frame, terminal obtains DMRS pattern by obtaining the DMRS pattern indication signaling of base station transmission.Be that base station can configure each carrier wave and/or carrier frequency and/or carrier wave indication and/or carrier type and the binding of DMRS pattern, terminal just can obtain DMRS pattern by obtaining carrier wave indication and/or carrier frequency and/or carrier type.

Wherein carrier wave indication, carrier frequency, carrier type can configure to terminal by terminal high-level signaling and/or physical layer signaling.

Embodiment 26

Base station and the individual DMRS pattern of terminal predefine N (N > 0), then notification terminal is carried out by physical layer signaling in base station, the DMRS pattern that base station adopts while sending descending sub frame, terminal obtains DMRS pattern by obtaining the physical layer DMRS pattern indication signaling of base station transmission.

Wherein said physical layer signaling can be indicated for the existing bit of DL Grant or newly-increased signaling.

Further indication bit can be utilized 1 or 2 bits in existing DL Grant or 1 or 2 newly-increased bits.

Sub-embodiment 1

During DMRS pattern that when base station utilizes physical layer signaling notification terminal to send descending sub frame, base station adopts, Aalue of ' PDSCH RE Mapping and Quasi-Co-Location Indicator ' field1 or 2 bits that base station can be reused in DL Grant are indicated DMRS pattern.

Terminal utilizes physical layer signaling Value of ' PDSCH RE Mapping and Quasi-Co-Location Indicator ' field1 or 2 bits to obtain the DMRS pattern adopting while receiving descending sub frame.

Base station configuration DMRS pattern at least comprises one of following methods:

Embodiment 27

Base station can configure or predefine is divided into individual group of Y (Y > 0) the individual PRB Pairs of X (X > 0), each PRB Pairs in same group adopts different DMRS patterns to send, and the identical PRB Pairs position in Y group or the PRB Pairs of index adopt identical DMRS pattern to send.

Terminal can receive the configuration information of base station or be scheduled to, the individual PRB Pairs of X (X > 0) is divided into individual group of Y (Y > 0), each PRB Pairs in same group adopts different DMRS patterns to receive, and the identical PRB Pairs position in Y group or the PRB Pairs of index adopt identical DMRS pattern to receive.

Figure 24 is the composition structural representation of the frequency pilot sign bogey of the embodiment of the present invention, and as shown in figure 24, the frequency pilot sign bogey of the embodiment of the present invention comprises map unit 240 and allocation units 241, wherein:

Map unit 240, for by one or more demodulated reference signal DMRS port mapping to one or more resources;

Allocation units 241, for a plurality of DMRS ports being divided into one or two or four DMRS port set by time domain or frequency domain position, and be different precoding weights or the beam forming weights of DMRS port assignment on the same group not, a plurality of DMRS ports in identical DMRS port set adopt the multiplexing identical running time-frequency resource of code division multiplexing CDM mode.

The DMRS mapping ruler of map unit 240 and 241 foundations of allocation units, identical with the described DMRS mapping mode of previous embodiment one to 22, repeat no more here.

The practical function that it will be appreciated by those skilled in the art that the each processing unit in the frequency pilot sign bogey shown in Figure 24 can be with reference to associated description above and is understood.The function that it will be appreciated by those skilled in the art that each processing unit in the frequency pilot sign bogey shown in Figure 24 can realize by the program running on processor, also can realize by concrete logical circuit.

Figure 25 is the composition structural representation of the frequency pilot sign processing unit of the embodiment of the present invention, and as shown in figure 24, the frequency pilot sign processing unit of the embodiment of the present invention comprises demapping unit 250 and determining unit 251, wherein:

Demapping unit 250, goes out one or more demodulated reference signal DMRS ports for receive also demapping in one or more resources;

Determining unit 251, for determine one or two or four the DMRS port set under a plurality of DMRS ports by time domain or frequency domain position, and determine that not DMRS port on the same group distributes different precoding weights or beam forming weight, the multiplexing identical running time-frequency resource of a plurality of DMRS ports employing code division multiplexing CDM mode in identical DMRS port set.

In the present invention, the demapping mode of demapping unit 250 and 251 foundations of determining unit is identical with the described DMRS mapping mode of previous embodiment one to 27, repeats no more here.

Obviously, those skilled in the art should be understood that, above-mentioned each processing unit of the present invention or each step can realize with general calculation element, it can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, it can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.

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

Claims

1. a frequency pilot sign bearing method, is characterized in that, described method comprises:

2. method according to claim 1, is characterized in that, described by one or more demodulated reference signal DMRS port mapping on one or more resources, comprising:

3. method according to claim 2, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7,13,14} is upper, comprising:

4. according to the method described in claims 1 to 3 any one, it is characterized in that, described method also comprises:

5. method according to claim 2, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7,13,14} is upper, comprising:

Or, for odd number PRB Pair, OFDM symbol { the 7th subcarrier and the OFDM symbol { 12 of 6,7}, 13} { 2,12} subcarrier carries first DMRS port set, OFDM symbol { 6, the 6th subcarrier of 7} and OFDM symbol { { second DMRS port set of 1,11} subcarrier carrying of 13,14}; For even number PRB Pair, OFDM symbol { the { 2 of 6,7}, { the 7th subcarrier of 13,14} carries first DMRS port set, OFDM symbol { 6 for 12} subcarrier and OFDM symbol, { 1,11} subcarrier and OFDM symbol { second DMRS port set of the 6th subcarrier carrying of 13,14} of 7};

6. according to the method described in claim 1,2 or 5, it is characterized in that, described method also comprises:

7. method according to claim 1, is characterized in that, when a plurality of DMRS ports are divided into four DMRS port set, described by a plurality of DMRS port mapping on a plurality of resources, comprising:

DMRS port set is carried on to OFDM symbol in subframe { on 6,7}.

8. method according to claim 7, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7} is upper, comprising:

9. method according to claim 1, is characterized in that, when a plurality of DMRS ports are divided into four DMRS port set, described by a plurality of DMRS port mapping on a plurality of resources, comprising:

DMRS port set is carried on to OFDM symbol in subframe { on 6,7,12,13}.

10. method according to claim 9, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7,12,13} is upper, comprising:

11. according to the method described in claim 1,7,8,9 or 10, it is characterized in that, described method also comprises:

12. according to the method described in claim 1,7,8,9 or 10, it is characterized in that, described by one or more demodulated reference signal DMRS port mapping on one or more resources, comprising:

In extended cyclic prefix subframe,

Or, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS port set;

13. methods according to claim 12, is characterized in that, described method also comprises:

14. according to the method described in claim 1 to 13 any one, it is characterized in that, described method also comprises:

While carrying two ports in a DMRS port set, in two ports, any one port takies all resources in a group, the CDM code that continuous two resources of one of them port in a group adopt is the spreading code for [11], and the CDM code that continuous two resources of another one port in a group adopt is the spreading code of [1-1];

15. according to the method described in claim 1 to 14 any one, it is characterized in that, described method also comprises:

Different PRB Pair adopts different DMRS patterns;

16. methods according to claim 15, is characterized in that, odd number PRB Pair and even number PRBPair adopt different DMRS patterns.

17. methods according to claim 16, is characterized in that, described method also comprises:

18. 1 kinds of frequency pilot sign processing methods, is characterized in that, described method comprises:

19. methods according to claim 18, is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation comprises:

20. methods according to claim 19, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7,13,14} is upper, comprising:

Or,

OFDM symbol 6,7,13,14} the { 7,12} subcarrier carries first DMRS port set, OFDM symbol { second DMRS port set of the 2nd subcarrier carrying of 6,7,13,14};

21. according to the method described in claim 19 or 20, it is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

22. methods according to claim 19, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7,13,14} is upper, comprising:

Or, OFDM symbol { { 2,7} subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 7,12} subcarrier carries first DMRS port set, OFDM symbol { the { 2 of 6,7}, 7} subcarrier and OFDM symbol { { second DMRS port set of 6,11} subcarrier carrying of 13,14};

Or, OFDM symbol { { 7,12} subcarrier and the OFDM symbol { 13 of 6,7}, 14} { 2,7} subcarrier carries first DMRS port set, OFDM symbol { the { 6 of 6,7}, 11} subcarrier and OFDM symbol { { second DMRS port set of 2,7} subcarrier carrying of 13,14}.

23. according to the method described in claim 19,20 or 22, it is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

24. methods according to claim 19, is characterized in that, when a plurality of DMRS ports are divided into four DMRS port set, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation comprises:

DMRS port set is carried on to OFDM symbol in subframe { on 6,7}.

25. methods according to claim 24, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7} is upper, comprising:

26. methods according to claim 19, is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation comprises:

DMRS port set is carried on to OFDM symbol in subframe { on 6,7,12,13}.

27. methods according to claim 26, is characterized in that, described by DMRS port set be carried on OFDM symbol in subframe 6,7,12,13} is upper, comprising:

28. according to the method described in claim 19,24,25,26 or 27, it is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

29. methods according to claim 19, is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation comprises:

In extended cyclic prefix subframe,

Or, OFDM symbol 11,12} { 3,6,9,12} subcarrier carries first DMRS port set;

30. methods according to claim 29, is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

31. according to claim 19 to the method described in 30 any one, it is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

32. according to claim 19 to the method described in 31 any one, it is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

Different PRB Pair adopts different DMRS patterns;

33. methods according to claim 32, is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

Odd number PRB Pair and even number PRB Pair adopt different DMRS patterns.

34. methods according to claim 32, is characterized in that, one or more resources, the mapping ruler of the one or more DMRS port of demapping institute foundation also comprises:

The signaling method of 35. 1 kinds of demodulated reference signals, is characterized in that, described method comprises:

36. methods according to claim 35, is characterized in that, the DMRS pattern that described transmit leg notifies recipient's descending sub frame to adopt by physical layer signaling, comprising:

37. methods according to claim 35, is characterized in that, the DMRS pattern that described transmit leg notifies described recipient's descending sub frame to adopt by physical layer signaling, comprising:

Described transmit leg is reused two bit indication DMRS patterns in DL Grant.

38. methods according to claim 35, is characterized in that, the DMRS pattern that described transmit leg notifies described recipient's descending sub frame to adopt by physical layer signaling, comprising:

39. methods according to claim 36, is characterized in that, the DMRS pattern that described transmit leg notifies described recipient's descending sub frame to adopt by physical layer signaling, comprising:

40. methods according to claim 35, is characterized in that, described method also comprises:

41. methods according to claim 35, is characterized in that, described method also comprises:

42. methods according to claim 35, is characterized in that, described method also comprises:

The signaling method of 43. 1 kinds of demodulated reference signals, is characterized in that, described method comprises:

44. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

Described recipient is known DMRS pattern by receiving the existing bit in DL Grant or reusing bit, or knows DMRS pattern by the added bits receiving in DL Grant.

45. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

Described recipient is by receiving existing two bits in DL Grant or reusing the DMRS pattern that two bits are known descending sub frame.

46. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

The DMRS pattern that described recipient is known descending sub frame by Value of ' the PDSCH RE Mapping and Quasi-Co-Location Indicator ' field1 in reception DL Grant or two bits.

47. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

The DMRS pattern that described recipient is known descending sub frame by the newly-increased bit in reception DL Grnat or two bits.

48. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

Described recipient utilizes carries the DMRS pattern that wave frequency and/or carrier index and/or carrier type are known descending sub frame.

49. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

Described recipient receives base station configuration and carries wave frequency and/or carrier index and/or carrier type and the DMRS pattern binding information that adopts, and knows one or more DMRS patterns that each carrier frequency is corresponding.

50. according to the method described in claim 43, it is characterized in that, described recipient knows by high-level signaling the DMRS pattern that descending sub frame adopts, and comprising:

Know the DMRS pattern of the PRB Pair that has configured DMRS.

51. 1 kinds of frequency pilot sign bogeys, is characterized in that, described device comprises map unit and allocation units, wherein:

52. 1 kinds of frequency pilot sign processing unit, is characterized in that, described device comprises demapping unit and determining unit, wherein: