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Call-level and packet-level performance analysis of call admission control and adaptive channel allocation in cellular wireless networks

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4 Author(s)
Niyato, D. ; Dept. of Elect. & Comp. Engg., Manitoba Univ., Winnipeg, Man. ; Palit, R. ; Kota, S. ; Hossain, E.

We propose a model for analyzing the QoS performance measures in a cellular wireless mobile network with call admission control (CAC) and adaptive channel allocation (ACA). The proposed model considers cross-layer (physical/radio link/network) parameters to analyze both the call-level and the packet-level performances. In the network layer, call admission control (CAC) is responsible for deciding whether an incoming call can be accepted or not such that the performances of the ongoing calls do not deteriorate below the acceptable level. Also, an adaptive channel allocation (ACA) scheme is used to maximize the utilization of the radio resources. In the physical layer, adaptive modulation is used to adjust the packet transmission rate according to channel quality. Different QoS measures such as new call blocking probability, handoff call dropping probability, radio link level packet dropping probability and average packet delay are obtained. The analytical results are validated by extensive simulations. We also present typical applications of the proposed analytical model

Published in:

Global Telecommunications Conference, 2005. GLOBECOM '05. IEEE  (Volume:5 )

Date of Conference:

2-2 Dec. 2005