PRMA (Packet Reservation MultipleAccess), a packet multiple access scheme with reservation, is well-known for its high spectrum efficiency in the timedomain owing to the statistical multiplexing effect. In order to apply packet transmission to cellular system where spectrum efficiency in spacedomain is important, this paper proposes a distributed dynamic channel assignment method where =use partitioning is established by using one slot exclusively used for reservation and assigning packet transmission slots by base station Furthermore several techniques are introduced to improve performance. Computer simulation ~s u l t s show packet dropping probability is greatly decmsed by the proposed method.
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