Analysis of Call Admission Control Schemes for WLAN Coupled to 3G Network
Convergence of Wireless Local Area Network (WLAN) and Third Generation (3G) wireless network is expected to create new markets for service providers and tender enhanced services to the integrated network users. In this paper, Call Admission Control (CAC) schemes viz., ThroughPut (TP) based CAC and Dynamic Partitioning (DP) CAC with service differentiation for WLAN coupled to 3G network have been analyzed. The 3G/WLAN convergence network with TP based admission control is developed for loose, tight and hybrid coupled network. DP scheme, a resource allocation mechanism is also implemented, in which the differentiation between the data and voice calls are made by using different thresholds. The performance parameters such as delay, throughput, voice and data call blocking probabilities are analyzed for different coupled networks.