An effective call admission policy for multi-services wireless networks using stochastic control

Call admission control is one of the key methods in ensuring the quality of service in mobile wireless networks. The traditional guard channel scheme (GC) and its numerous variants cannot adapt to changes in traffic pattern due to their static nature. The SDCA (stable dynamic call admission) mechanism proposed by S. Wu can overcome that shortcoming because of its stochastic nature. Unfortunately, it is only suitable for single-service. In this paper, we extend this call admission control mechanism and propose a new one called MDCA to adapt for multiple types of services in mobile wireless networks. Numerical results of simulation show that our scheme steadily satisfies the hard constraint on call dropping probability of multi-services while maintaining a high channel throughput.