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1. (WO1999007172) METHOD FOR MULTIPLE ACCESS IN A CELLULAR RADIOCOMMUNICATION NETWORK

Pub. No.:    WO/1999/007172    International Application No.:    PCT/FR1998/001656
Publication Date: Fri Feb 12 00:59:59 CET 1999 International Filing Date: Tue Jul 28 01:59:59 CEST 1998
IPC: H04J 4/00
H04W 16/02
H04W 16/10
H04W 16/12
H04W 72/08
Applicants: FRANCE TELECOM
Inventors: BLANC, Patrick
ACX, Anne-Gaële
Title: METHOD FOR MULTIPLE ACCESS IN A CELLULAR RADIOCOMMUNICATION NETWORK
Abstract:
The invention concerns a network enabling communications at different rates, with signals transmitted by successive frames each divided into elementary time intervals usable for different communications, A frequency band is allocated to communications between the base stations of a group of cells and mobile stations. Said band is subdivided into blocks of width 2M-1xB0, where B0 is a predetermined spectral width and M a whole number greater than 1 selected on the basis of a maximal communication rate. Each of the blocks is divided into carriers of width 2?m(i)-1xB¿0, m(i) being a whole number depending on the block considered such as 1≤m(i)≤M. The distribution of blocks and carriers in the allocated frequency band is identical for all the cells of the group. In order to support a communication in one of the cells, a predetermined logic channel is selected, according to the required rate, as one or several time intervals on one of the carriers.