Applying dynamic handoff to increase system performance on wireless cellular networks

Authors:
Chow-Sing Lin;Cheng-Chi Lu
Affiliations:
Department of Information Management, Southern Taiwan University of Technology, Tainan Shien, Taiwan, R.O.C.;Department of Information Management, Southern Taiwan University of Technology, Tainan Shien, Taiwan, R.O.C.
Venue:
GPC'06 Proceedings of the First international conference on Advances in Grid and Pervasive Computing
Year:
2006

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Abstract

With the rapid advance in wireless network communication, multimedia presentation has become more applicable. However, since Mobile Hosts (MHs) are free to move around a wireless network, workloads among cells tend to be imbalanced, leading to higher call dropping probability (CDP) and call blocking probability (CBP). How to balance the workloads among cells to provide better quality of service (QoS) has become an important issue to be addressed. In this paper, we propose a novel dynamic handoff adjustment (DHA) scheme to balance workloads among cells. The DHA scheme dynamically hands over MHs to neighbor cells based on the workloads of cells. With well-balanced workloads of cells, a cell can have more available bandwidth to serve more MHs. Our simulation experiments show that the DHA scheme has lower CDP and better bandwidth utilization (BU) than other existing schemes.