Patent ID: 9077531
Filing Date: 2015-07-07
Classification: H04L

Abstract:
1. A channel information feedback method of a relay station (RS), the method comprising: extracting a set of channel parameters required for calculating channel state of a backhaul channel by using a first signal received from a base station (BS), wherein the backhaul channel is a channel between the BS and the RS; transmitting the set of channel parameters and a second signal to a relay user equipment (Re UE) connected to the RS through an access channel, wherein the access channel is a channel between the RS and the Re UE; receiving integrated channel information from the Re UE; and transmitting the integrated channel information to the BS, wherein the integrated channel information is channel information generated by regarding the backhaul channel and the access channel as a single radio channel, wherein the integrated channel information is generated by combining backhaul channel information and access channel information, wherein the backhaul channel information is calculated by the set of channel parameters and the access channel information is estimated by the second signal, and wherein the backhaul channel information, the access channel information and the integrated channel information are generated by the Re UE.