Performance of a two-level call admission control scheme for DS-CDMA wireless networks
EURASIP Journal on Wireless Communications and Networking
Maximizing the capacity of mobile cellular networks with heterogeneous traffic
Computer Networks: The International Journal of Computer and Telecommunications Networking
Determination of optimal call admission control policy in wireless networks
IEEE Transactions on Wireless Communications
Probabilistic call admission control in wireless multiservice networks
IEEE Communications Letters
International Journal of Wireless and Mobile Computing
Modeling and Analysis of a Hybrid CAC Scheme in Heterogeneous Multimedia Wireless Networks
International Journal of Handheld Computing Research
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A novel call admission control (CAC) scheme for an adaptive heterogeneous multimedia mobile network with multiple classes of calls is investigated here. Different classes of calls may have different bandwidth requirement, different request call holding time and different cell residence time. At any time, each cell of the network has the capability to provide service to at least a given number of calls for each class of calls. Upon the arrival (or completion or hand off) of a call, a bandwidth degrade (or upgrade) algorithm is applied. An arriving call to a cell, finding insufficient bandwidth available in this cell, may either be disconnected from the network or push another call out of the cell toward a neighboring cell with enough bandwidth. We first prove that the stationary distribution of the number of calls in the network has a product form and then show how to apply this result in deriving explicit expressions of handoff rates for each class of calls, in obtaining the disconnecting probabilities for each class of new and handoff calls, and in finding the grade of service of this mobile network