QoS Provisioning for Adaptive Multimedia Services in Wireless/Mobile Cellular Networks

Providing multimedia services with QoS guarantees in next generation wireless cellular networks poses great challenges due to the scarce radio bandwidth. Therefore, the demand for effective and careful resource allocation is immensely needed. In this paper, we combine call admission control (CAC) and adaptation bandwidth allocation (ABA) algorithm into a novel framework, which we call adaptive QoS (Ad-QoS) for provisioning connection-level QoS in multimedia wireless cellular networks (MWCN). Simulation results show that the framework is able to reduce Handoff connection dropping probability (HCDP) for active users of real time services to zero level. Thus, it satisfies mobile users´ needs resulting in a stable performance levels during heavy load periods. Furthermore, the framework provides a low new connection blocking probability (NCBP), which translates into high resource utilization. This is a highly desirable property from the service provider point of view