Mobile multimedia communications

This dissertation addresses the problem of guaranteed Quality-of-Service provisioning for all traffic components in wireless communication systems. This problem is of great interest to communication engineers involved in planning and design of wireless communication systems. We approach the problem by means of appropriate design of call admission control and medium access schemes. Without proper design of these elements, the system will suffer from high packet loss probability, long packet delay, high blocking probability and high forced termination probability and the result will be lower system capacity and poorer performance than could otherwise be achieved.; This dissertation proposes and analyzes call admission control algorithms and medium access schemes for different wireless communication systems. We consider a mixture of service types for each system. Different service types require different types and amounts of various resources in each cell. In chapter 2, CBR, VBR and ABR traffic are considered. In chapter 3, asymmetric service types are incorporated into the mobile multimedia communication systems. In chapter 4, voice, data and self-similar traffic are considered in a DS-CDMA system. Scheduled demand change caused by providing mobile service to mass transportation vehicles in wireless communication systems is considered in chapter 5. Traffic characteristics are carefully examined and taken into consideration in the design of medium access schemes. Call admission control is designed with regard to the medium access scheme. Priority access is considered in the call admission control.; We extend the analytically tractable model for mobile communication systems developed in previous work done at SUNY Stony Brook. The modified model can consider the Quality-of-Service requirement constraints, the effects of medium access control, asymmetric system layout and asymmetric session types. The model considers different platform types and different session types in the same system. Instead of using extensive simulation of overwhelmingly large number of cells, this model allows computational results to be easily obtained by numerical computation using an iteration method. The model developed in this work also allows treatment of more general and elaborate configurations.