PILOT SIGNAL TRANSMISSION BY RELAY STATIONS IN MULTIHOP RELAY COMMUNICATION SYSTEM Russian patent published in 2011 - IPC H04L25/02 

FIELD: information technology.

SUBSTANCE: in the method of supporting multihop relay in a wireless communication system, a relay station receives data and a first pilot signal from an upstream station, e.g. a base station or another relay station. The relay station derives a channel estimate based on the first pilot signal and detects data based on the channel estimate. The relay station resends the data and sends a second pilot signal to a downstream station, e.g. a subscriber station or another relay station. Each pilot signal may be sent in accordance with a pilot signal format selected for that pilot signal. The first and second pilot signals may be sent using the same or different pilot signal formats. The relay station may receive channel information from the second station and may send the channel information to the first station and/or select an estimate for data transmission to the second station based on the channel information.

EFFECT: high efficiency of relaying.

15 cl, 16 dwg