出版社：University of Malaya * Faculty of Computer Science and Information Technology
摘要：An Adaptive Reservation Time Division Multiple Access (ARTDMA) control protocol for Wireless Asynchronous Transfer Mode (WATM) networks is proposed in this paper. ARTDMA combines the advantages of distributed access and centralised control for transporting Constant Bit Rate (CBR), Variable Bit Rate (VBR) and Available Bit Rate (ABR) traffic efficiently over a wireless channel. The contention slots access for reservation requests is governed by two protocols, the Adaptive Framed PseudoBayesian Aloha with Adaptive Slot Assignment (AFPBAASA) protocol and the Framed PseudoBayesian Aloha with Adaptively Prioritised Controlled Capture (FPBAAPCC) protocol. Both protocols provide different access priorities to the control packets in order to improve the QualityofService (QoS) offered to time sensitive connections. ARTDMA also features a novel integrated resource allocation algorithm that efficiently schedules terminals’ reserved access to the wireless ATM channel by considering their requested bandwidth and QoS. Integration of CBR, voice, VBR, data and control traffic over the wireless ATM channel using the proposed ARTDMA protocol is considered in the paper. The performance of the ARTDMA in conjunction with the AFPBAASA protocol and FPBAAPCC protocol has been investigated and the simulation results are presented showing that the protocol satisfies the required QoS of each traffic category while providing a highly efficient utilisation of approximately 96% for the wireless ATM channel.
