Resource auction multiple access (RAMA) for statistical multiplexing of speech in wireless PCS

The excess capacity of resource auction multiple access (RAMA) is evaluated for statistical multiplexing of speech. Using selected GSM parameters in conjunction with M-ary frequency shift keying (FSK) for signaling, it is shown that, in cells with propagation delays of up to 45 μs, 432 assignments/s are feasible. The aim is to exploit this large assignment capacity to increase channel utilization. It is shown that, for packet dropping probabilities of 1%, RAMA can provide a multiplexing gain as high as 2.63 with fast speech detection and 2.28 with slow speech detection. RAMA permits graceful degradation during peak traffic demand by operating at higher packet dropping probabilities. Simulation results also indicate that RAMA is suitable for fast handoffs and resource allocation with statistical speech multiplexing over areas with a wide variety of cell sizes