Patent ID: 9203569
Filing Date: 2015-12-01
Classification: H04L,H04W

Abstract:
1. A method for a user equipment (UE) to transmit two types of pilot signals to a base station in a mobile communication system, the method comprising: transmitting, from the UE, a first type pilot signal only associated with transmission of data to the base station in a subframe that comprises a first time domain unit for transmitting a first pilot signal of the first type pilot signal and a second time domain unit for transmitting a second pilot signal of the first type pilot signal; and transmitting, from the UE, a second type pilot signal only associated with channel quality in a subframe specified based on a period value of two or more subframes and a subframe offset value, wherein the period value and the subframe offset value are received from the base station through signaling, wherein the subframe that includes the first and second pilot signals of the first type pilot signal and the subframe that includes the second type are the same subframe, and wherein the UE transmits the first pilot signal of the first type pilot signal in the first time domain unit and transmits the second pilot signal of the first type pilot signal and the second type pilot signal in the second time domain unit.