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An MAC Protocol for Non-Real-Time Burst Traffic in Wireless ATM Networks

In-Taek LIM

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Summary :

In this paper, a contention-based reservation MAC protocol is proposed for non-real-time burst traffic class in wireless ATM networks. The proposed protocol is characterized by the contention-based transmission of the reservation request and contention-free transmission of burst traffic. The design objective of the proposed protocol is to reduce contention delay during the contention phase of a connection. In order to reduce collision of reservation requests, the base station calculates the transmission probability based on the estimated load of reservation requests and the number of random access minislots, and broadcasts it over the frame header period of downlink channel. Wireless terminal, which has traffic burst, selects a random access minislot and transmits its reservation request with a received transmission probability. Based on the successfully received reservation, the scheduler allocates the uplink data slots to wireless terminal. Simulation results show that the proposed protocol can provide higher channel utilization, and furthermore, maintains constant delay performance in a heavy traffic environment.

Publication
IEICE TRANSACTIONS on Communications Vol.E85-B No.10 pp.1996-2001
Publication Date
2002/10/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Mobile Multimedia Communications)
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