Patent ID: 7817602
Filing Date: 2010-10-19
Classification: H04W

Abstract:
1. A transmission method in a wireless telecommunication system including at least a base station to communicate with terminals over bidirectional communication channels, each channel supporting frames being divided into downlink sub frames and uplink sub frames, each downlink sub frame including a number of symbols to be transmitted to at least two terminals, wherein a time delay of each terminal connected thereto is determined, said time delay being such that any terminal after having received all the symbols included in a downlink sub frame followed by an uplink sub frame may transmit other symbols over said uplink sub frame with said time delay so that the other symbols susceptible to be transmitted are received by said base station at a time separated from an end of a transmission by the base station of the downlink sub frame by a predefined guard period that is constant regardless of distance, and wherein a transfer of at least one supplementary symbol between the base station and at least one terminal that can receive or transmit said at least one supplementary symbol during the time delay is enabled, the method comprising: obtaining multiplexing resources of the wireless telecommunication system for transfer of at least a part of the symbols comprised in a sub frame; associating with a first portion of each obtained multiplexing resource one first transmission power coefficient of a plurality of first transmission power coefficients; multiplexing data on the first portion of each obtained multiplexing resource in order to form at least a part of each symbol included in the sub frame; transferring, during a first time period that precedes the guard period, the at least part of each symbol comprised in the sub frame according to a first group of transmission power coefficients of the plurality of first transmission power coefficients that correspond to the at least part of each symbol; multiplexing data on a second portion of each obtained multiplexing resource in order to form at least a part of at least one supplementary symbol; associating with the second portion of each obtained multiplexing resource one second transmission power coefficient of a plurality of second transmission power coefficients; and transferring, during the guard period that follows the first time period, the at least part of the at least one supplementary symbol according to a second group of transmission power coefficients of the plurality of second transmission power coefficients that correspond to the at least part of the at least one supplementary symbol, each second transmission power coefficient associated with a multiplexing resource being lower than the first transmission power coefficient associated with a same multiplexing resource as the second transmission power coefficient.