The method involves defining a set of subsectors, and sharing a frequency band or bandwidth of a transmission channel in the form of different signals which are allocated to the different sub-sectors in dynamic manner. The signals allocated to the different sub-sectors are transmitted via different antennas (6.10, 6.11). The frequency band is allocated for transmission between a base station and a set of client stations within a sector. An independent claim is also included for a device for transmitting data within a multiple access communication system using a transmission channel.
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