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FAFS: A New MAC Protocol for Wireless ATM

By Sandeep Jain, Vinod Sharma and Dheeraj Sanghi


Wireless ATM (WATM) is being envisaged as the next generation wireless solution for meeting the demands of the users. Besides supporting high data transfer rates, it also provides QoS (Quality-of-Service) guarantees to the connections. Since the wireless channel is error-prone (Bit Error Rate ? 10 \Gamma3 ) and bandwidth is scarce, it becomes an important design issue to efficiently allocate bandwidth among users. MAC (Medium Access Control) layer arbitrates the channel access to the wireless medium and is also responsible for bandwidth allocation to different users. In this paper we present a new MAC protocol, FAFS (Fair Access Fair Scheduling), which provides a new contention scheme along with a novel scheduling algorithm that allocates data slots to the sources based on their packet queues, negotiated traffic requirements, signal intensity and the last time when the channel was granted to the connection (for best effort service only). Our results show that the delay probability of..

Year: 2007
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