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Packet Reservation Multiple Access (PRMA) refers to a multiple access strategy with frames of a fixed number of slots. In case a terminal contains a set of data packets or speech segments to deliver, it competes to gain access in any free slot.
If it can successfully capture the base station (BS), the terminal acquires reservation in the associated slots of the next frames, right until it releases the reservation. In PRMA, adjacent cells make use of distinct carrier frequencies in line with a cellular reuse plan. The fundamental process of PRMA includes occupying a time slot only at the time of speech talkspurts and releasing the channel at the time of silence periods.
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