Communication method and a radio system

Details Communication method and a radio system Communication method and a radio system

2008-04-29

2011-11-22

Kizou, Hassan (Department: 2472)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S431000

Reexamination Certificate

active

08064396

ABSTRACT:
The network system of an orthogonal frequency division multiplexing radio system measures a quality of a signal from a user terminal. At least one compared property of the signal is compared with a predetermined threshold. The comparison includes a comparison involving the measured quality. A number of sub-channels for the user terminal is decreased if each comparison operation indicates that a compared property is at the predetermined threshold or within a predetermined range of the threshold. A control signal about a decrease is transmitted to the user terminal. The user terminal transmits with the decreased number of sub-channels as a response to the control signal.

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