Abstract
Future wireless systems will allow a mobile access to Asynchronous Transfer Mode (ATM) networks. This paper proposes a novel Medium Access Control (MAC) protocol based on a round robin policy. A token bucket scheme has been adopted, so that a source enabled to transmit can send a maximum number of packets according to the number of tokens in the related bucket. We have considered real time-Variable Bit Rate (rt-VBR) traffics and bursty Available Bit Rate (ABR) traffics. The scheduler estimates the congestion of the rt-VBR buffers and accordingly adapts the cycle order. The obtained MAC scheme, called Adaptive Token Bucket — priority based Round Robin (ATB-RR), has permitted to obtain satisfactory quality of service levels for both rt-VBR and ABR traffics.
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