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Ping-Pong Avoidance Algorithm for Vertical Handover in Wireless Overlay Networks
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- Authors
- Won-Ik Kim, Bong-Ju Lee, Jae-Su Song, Yeon-Seung Shin, Yeong-Jin Kim
- Issue Date
- 2007-09
- Citation
- Vehicular Technology Conference (VTC) 2007 (Fall), pp.1509-1512
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we propose a ping-pong avoidance algorithm capable of effectively alleviating the unnecessary vertical handovers between 3G cellular and WLAN hotspots. The proposed algorithm determine the appropriate time at which a terminal should initiate a handover. It can be classified into two major schemes: One is designed to separate the single vertical handover threshold; the other to estimate the transition of the beacon signal strengths received by the terminal from WLAN hotspots on the basis of the least square approach. The aim of this study is to prevent such performance degradations as the increase of the service interruption time which follows unnecessary vertical handovers. © 2007 IEEE.
- KSP Keywords
- Beacon signal, Least Squares(LS), Least square approach, Ping-pong, Service interruption time, Wireless overlay networks, vertical handover(VHO)