Integrated services packet networks with mobile hosts: Architecture and performance

This paper considers the support of real-time services to mobile users in a n Integrated Services Packet Network. In the currently existing architectur es, the service guarantees provided to the mobile hosts are mobility depend ent, i.e., mobile hosts experience wide variation in the quality of service and often service disruption when hosts move from one location to another. The network performance degrades significantly when mobile hosts are provi ded with mobility independent service guarantees. In this paper we have pro posed a service model for mobile hosts that can support adaptive applicatio ns which can withstand service degradation and disruption, as well as appli cations which require mobility independent service guarantees. We describe an admission control scheme for implementing this service model and evaluat e its performance by simulation experiments. Simulation results show that, if sufficient degree of multiplexing of the mobility dependent and independ ent services are allowed, the network does not suffer any significant perfo rmance degradation and in particular our admission control scheme achieves high utilization of network resources.