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학술저널
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저널정보
SK텔레콤 Telecommunications Review Telecommunications Review 제13권 제2호
발행연도
2003.1
수록면
336 - 345 (10page)

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This paper proposes a contention-based reservation MAC protocol for transporting bursty traffic efficiently in wireless ATM networks. The proposed protocol is characterized by a contention-based transmission of the reservation request and a contention-free transmission of the bursty traffic. The design objective of the proposed protocol is to reduce the contention delay while maximizing the channel utilization. In order to reduce the collision of reservation request packets, the base station calculates and broadcasts the transmission permission probability of reservation request packets. The calculation of the transmission permission probability is based on the estimated load of reservation requests and the number of random access minislots. The wireless terminal, which has a bursty traffic, selects a random access minislot and transmits its reservation request packet with the received transmission permission probability. Based on the successfully received reservation packets, the scheduler allocates the uplink data slots to the wireless terminal. Simulation results are presented to show that the proposed protocol provides high channel utilization, and furthermore, maintains a constant delay performance in a heavy traffic environment.

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