A non-collision PRMA protocol for integrated voice and data wireless networks

A key to integrate voice and data traffic onto a common radio channel is the silence gaps detection technique. By restraining the voice terminals during silence from occupying the slots, the system capacity can be significantly improved. This paper considers integrated voice/data services using the NC-PRMA protocol in which the silence gaps detection technique is used. Two additional strategies are also applied to this protocol for the purpose of improving system performance: (1) to limit the number of slots shared by the voice terminals as much as possible, subject to a packet dropping rate of no more than 0.01; (2) to dynamically control the data terminals to share all of the unused time slots in a “round robin” manner. Based on these strategies, the performance of movable boundary and no boundary slot assignment schemes are analyzed. The performance is measured in terms of the blocking probabilities of voice and data terminals and the mean transmission time of data terminals. The results show that, where the voice and data traffic are the same, the no boundary scheme performs better than the movable scheme