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Consideration is given to a two-cluster system in multihop packet radio topologies. Each cluster deploys a limited sensing random-access algorithm and contains local users, who transmit their packets only via the algorithm in their own cluster. The system also contains marginal users, who may transmit their packets using either one of the algorithms in the two clusters. The author adopts a limited sensing random-access algorithm per cluster that has been previously studied. This algorithm utilizes binary, collision versus noncollision, feedback per slot, and in the presence of the limit Poisson user model and the absence of marginal users its throughput is 0.42. He considers a dynamic interconnection policy for the marginal users, and then studies the overall system performance in the presence of limit Poisson user populations. Specifically, the author studies the stability regions of the system and per packet expected delays. The interconnection policy accelerates the marginal users, presenting them with a significant delay advantage over the local users. This is desirable when the marginal users transmit high-priority data, for example. >

A. Burrell et al. (1993; 1994) described an implementation efficient capacity allocation protocol for multimedia traffic (voice, video, high and low speed data). The protocol determines the capacity allocation of each traffic dynamically, and induces moving boundaries within prespecified and fixed channel frames. The channel frames are selected to satisfy the jittering constraints of all the traffic, such as voice, video and high versus low speed data. The high level protocol, in conjunction with the channel frame structure and the specifics of the transmission policy, may satisfy all traffic and QOSs and may simultaneously attain high channel utilization, for certain variability conditions of the traffic rates and at relatively low implementation cost. In the work presented, the system stability, channel utilization, traffic rejection rate and packet/cell delay are examined. Performance evaluation results are presented. >

Proposes and evaluates a signaling and transmission algorithmic system for a wireless digital network, in conjunction with a traffic monitoring algorithm (TMA) for dynamic capacity allocation in multimedia ATM environments. The deployed signaling protocol is stable, and two transmission techniques are compared: a framed time-domain based (FTDB) technique and a framed CDMA (FCDMA) technique. The overall signaling/transmission/traffic monitoring proposed system has powerful performance characteristics, where the TMA-FTDB combination is superior to the TMA-FCDMA combination in environments where message lengths are relatively short and the speed of the transmission lines is relatively low.