Patent ID: 9439173
Filing Date: 2016-09-06
CPC Classification: H04L,H04W

Claim Text:
1. A method for a terminal to receive downlink data, the method comprising: receiving resource allocation information from a base station; and demodulating downlink data transmitted through a sub-resource allocation unit allocated based on the resource allocation information, wherein a resource allocation unit includes the sub-resource allocation unit and an additional sub-resource allocation unit, wherein the resource allocation unit is a physical resource block (PRB), wherein the PRB includes seven orthogonal frequency division multiplexing (OFDM) symbols and 12 subcarriers, wherein the sub-resource allocation unit includes a resource for a first demodulation-reference signal (DM-RS), wherein the additional sub-resource allocation unit includes a resource for a second DM-RS, wherein the first DM-RS is generated based on a first DM-RS sequence, wherein the second DM-RS is generated based on a second DM-RS sequence, wherein a pattern of the first DM-RS is determined based on the first DM-RS sequence, wherein a pattern of the second DM-RS is determined based on the second DM-RS sequence, and wherein an initial value of a pseudo random sequence for generating each of the first DM-RS sequence and the second DM-RS sequence is determined as follows: where n