US 10,771,212 B2 · Reference signal having variable structure

Abstract

A method for transmitting a data demodulation reference signal (DMRS) in a wireless communication system and a device therefor are disclosed. To this end, a basic DMRS is transmitted via the first OFDM symbol in a data transmission region of a predetermined subframe, and an additional DMRS is transmitted in the predetermined subframe in accordance with a level determined by a transmission environment, wherein the basic DMRS is characterized by being transmitted via the first OFDM symbol in the data transmission region of the predetermined subframe regardless of a transmission link, the structure of the subframe, and the transmission environment.

Claims9

Dependent claims

A method of transmitting a demodulation reference signal (DMRS) in a wireless communication system, the method comprising:

transmitting a DMRS via a first Orthogonal Frequency Division Multiplexing (OFDM) symbol within a time domain unit;
and
transmitting one or more additional DMRSs on one or more second OFDM symbols located only after the first OFDM symbol within the time domain unit,
wherein a position of the first OFDM symbol is differently determined based on mapping type of a data region, wherein the mapping type is related with a position of a starting OFDM symbol of the data region within the time domain unit, and
wherein positions of the one or more second OFDM symbols are determined based on a number of the one or more second OFDM symbols and a number of OFDM symbols within the time domain unit, and fixed regardless of the position of the first OFDM symbol which is differently determined based on the mapping type.

2 more elements

A device for transmitting a demodulation reference signal (DMRS) in a wireless communication system, the device comprising:

a transceiver configured to transmit a DMRS via a first Orthogonal Frequency Division Multiplexing (OFDM) symbol within a time domain unit and transmit one or more additional DMRSs on one or more second OFDM symbols located only after the first OFDM symbol within the time domain unit;
and
a processor configured to:
differently determine a position of the first OFDM symbol based on mapping type of a data region, wherein the mapping type is related with a position of a starting OFDM symbol of the data region within the time domain unit, and
determine positions of the one or more second OFDM symbols based on a number of the one or more second OFDM symbols and a number of OFDM symbols within the time domain unit,
wherein the processor fixes the positions of the one or more second OFDM symbols regardless of the position of the first OFDM symbol which is differently determined based on the mapping type.

3 more elements

Dependencies are inferred from the claim text.

Reference signal having variable structure

Life of this patent

Reference signal having variable structure

Life of this patent

Abstract

Claims9