Data transfer method, data transmission apparatus, and communication system in multi-hop relay system

摘要

The invention relates to a data transfer method in a multi-hop relay system. The data transfer method comprises: a step for allowing a base station to receive from a first terminal the channel information (Hd,1) between the base station and the first mobile station, a step for making the base station generate an interference cancellation precoding matrix using Hd,1, a step for forcing the base station to transfer first data to a relay station, and a step for making the relay station transfer the first data to the first mobile station and forcing the base station to transfer second data to a second mobile station, wherein the second data is converted using the interference cancellation precoding matrix. According to the disclosed data transfer method in the multi-hope relay system, the base station transfers data to another mobile station efficiently when the relay station transfers data to a mobile station. Therefore, the data transfer method is able to efficiently use the resources wasted in an existing data transfer method and improve the total data transmission rate of the base station.

主权项

1. A method for transmitting data in a multi-hop relay system, comprising:
receiving, by a base station, information regarding a channel between the base station and a first mobile station, from the first mobile station; generating, by the base station, an interference removal precoding matrix, using the channel information; transmitting, by the base station, a first data to a relay station, wherein the relay station transmits the first data to the first mobile station; and transmitting, by the base station, a second data to a second mobile station, using the interference removal precoding matrix without relaying of the relay station.