Signal transmission method performed by relay station in wireless communication system and apparatus thereof

摘要

Disclosed is a signal transmission method performed by a relay station in a wireless communication system. The method comprises the steps of: arranging guard time within at least one symbol period in a subframe which is configured with multiple symbol periods in a time domain; and transmitting a control signal or data to a base station by using symbol periods except for the symbol periods which include the guard time in the subframe. The guard time is equal to or shorter than one symbol period. The structure in which the control signal or the data is arranged in each symbol period of the subframe is determined on the basis of the number of symbol periods except for the symbol periods which include the guard time.

主权项

1. A method of a relay station transmitting a signal in a wireless communication system, the method comprising:
receiving, by the relay station, a parameter distinguishing a first subcarrier set used for a relay-sounding reference signal (R-SRS) from a second subcarrier set used for a sounding reference signal (SRS); placing, by the relay station, a guard time in a subframe including a plurality of symbol periods in a time domain; and transmitting, by the relay station, a control signal or data to a base station using symbol periods other than a symbol period which includes the guard time in the subframe, wherein the guard time is equal to or shorter than one symbol period, and wherein, when the subframe is configured to transmit a relay-sounding reference signal (R-SRS),
if the guard time is placed only in a first symbol period of the subframe and if the parameter indicates the first subcarrier set,
the R-SRS and the SRS are multiplexed in a whole system frequency band,the R-SRS and the SRS are transmitted through a last symbol period of the subframe in a time domain,R-SRS is transmitted via the last symbol through subcarriers having an odd index, andthe SRS is transmitted from a macro user equipment to the base station via the last symbol through subcarriers having an even index, andif the guard time is placed both in the first symbol period and in the last symbol period of the subframe,
the R-SRS is transmitted through a second to last symbol period of the subframe in a time domain and the R-SRS is transmitted only in a frequency band used for a transmission of the data.