TRAFFIC MONITORING FOR CAPACITY ALLOCATION OF MULTIMEDIA TRAFFIC IN ATM BROAD-BAND NETWORKS

We address the accommodation of multimedia traffic by ATM broadband ne tworks. We isolate a single network channel and we search for capacity allocation/transmission multiplexing policies which satisfy all traff ic QOSs with simultaneous high utilization of channel capacity resourc es, in the presence of variable traffic rates. Towards that direction, we superimpose a high-level traffic-monitoring protocol which determi nes capacity allocations for each traffic category, dynamically. The l atter protocol has sequential and implementation-efficient characteris tics, and induces moving boundaries within prespecified and fixed chan nel frames. The channel frames are selected to satisfy the jittering c onstraints of all the traffics, such as voice, video and high versus l ow speed data. The high level protocol, in conjunction with the channe l frame structure and the specifics of the transmission policy, may sa tisfy all traffic QOSs and may simultaneously attain high channel util ization, for certain variability conditions of the traffic rates and a t relatively low implementation cost. Performance analysis as well as numerical evaluations are provided.