Integration of speech and data over non-collision integrated packet reservation multiple access protocol

A non-collision integrated packet reservation multiple access (NC-IPRMA) protocol that efficiently accommodates speech and data is proposed for microcellular mobile communications. The performance of a speech subsystem of the NC-IPRMA is analyzed by means of the M/G/N/∞ /M_s queueing model, while the overall performance is investigated by using computer simulation. The result indicates that the NC-IPRMA protocol has a better overall performance than the PRMA and IPRMA in supporting integrated speech and data services, for instance, higher throughput, shorter data packet delay and more simultaneous conversations. Since the NC-IPRMA adopts a queueing mode to access channel, it completely resolves the instability under a heavy load that pushes the systems adopting a contending mode to the access channel into severe congestion. The NC-IPRMA combines intraframe reservation of slots for data packets with speech independence of data, and takes advantage of the feature that the uplink channel is completely controlled, thus it utilizes the channel more efficiently (near to 0.9). It is concluded that the NC-IPRMA has a high efficiency and stable performance in speech and low-medium rate data microcellular communications