Patent ID: 9025642
Filing Date: 2015-05-05
Classification: H04B,H04L

Abstract:
1. A method for relaying symbols transferred by a source to a destination in a wireless cellular telecommunication network, the symbols being relayed by a relay, the relay receiving symbols, the symbols being representative of coded bits derived from information bits, the method comprising: receiving, at the relay, coded bits corresponding to the symbols transmitted from the source to the destination; successfully decoding, at the relay, the coded bits into information bits corresponding to the symbols; determining, at the relay, a spectral efficiency to be used to transmit the symbols from the relay to the destination based on a number of coded bits received from the source prior to the successful decoding of the information bits; determining, at the relay, whether an acknowledgement message acknowledging receipt at the destination of the symbols transmitted by the source via a direct communication path between the source and the destination is received from the destination; and transferring, from the relay to the destination, the symbols using a modulation that corresponds to the determined spectral efficiency only when the acknowledgement message is not received from the destination.