One-hop call admission control in heterogeneous wireless networks: a queueing analysis

Authors:
Wenzhuo Ouyang;Luoyi Fu;Xinbing Wang;Ekram Hossain
Affiliations:
Department of Electronic Engineering, Shanghai Jiao Tong University;Department of Electronic Engineering, Shanghai Jiao Tong University;Department of Electronic Engineering, Shanghai Jiao Tong University;Department of Electrical and Computer Engineering, University of Manitoba
Venue:
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Year:
2009

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Abstract

In a heterogeneous wireless network, where many different wireless networks interwork together, call admission control is an important issue to distribute user traffic among different access networks in order to provide quality of service (QoS). In this paper, we present and analyze the performance of a call admission control (CAC) policy for voice and data calls, which is based on one-hop cooperation among the mobile nodes, in a cellular-WLAN interworking scenario. For call-level queueing analysis of the CAC scheme, we use a more general phase-type distribution to model the characteristics of the system. Based on the analytical model, we illustrate the effect of one-hop cooperation on call-level QoS performance (e.g., call blocking probability, call dropping probability).