Patent ID: 9059890
Filing Date: 2015-06-16
Classification: H04B,H04L,H04W

Abstract:
1. A base station (BS) for controlling communication between a mobile station (MS) and a relay station (RS), the BS comprising: an antenna configured to transmit and receive signals; and a processor configured to: control the antenna to transmit and receive the signals; receive a ranging request message from the MS via the antenna during a ranging procedure; obtain first information related to a channel condition between the BS and the MS based only on the ranging request message; transmit a report request message via the antenna in order to request information related to a channel condition between the RS and the MS; receive a report response message via the antenna in response to the report request message, the report response message comprising second information measured by the RS and related to the channel condition between the RS and the MS; compare the first information with the second information in order to compare the channel condition between the BS and the MS with the channel condition between the RS and the MS; and perform direct communication with the MS or relay communication with the RS according to a result of the comparison.