An enhanced information server for seamless vertical handover in IEEE 802.21 MIH networks

Authors:
Younghyun Kim;Sangheon Pack;Chung Gu Kang;Soonjun Park
Affiliations:
School of Electrical Engineering, Korea University, Seoul, Republic of Korea;School of Electrical Engineering, Korea University, Seoul, Republic of Korea;School of Electrical Engineering, Korea University, Seoul, Republic of Korea;Mobile Communication Technology Research Laboratory, LG Electronics Inc., Republic of Korea
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking
Year:
2011

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Abstract

Seamless vertical handover is a key requirement in heterogeneous wireless networks where different networks are integrated. In this paper, we introduce an enhanced information server (EIS) to accelerate vertical handover procedures in IEEE 802.21 media independent handover (MIH) networks. Based on the EIS, we propose an improved vertical handover procedure in which wireless channel conditions are estimated by exploiting spatial and temporal locality at the EIS, and therefore time consuming channel scanning procedures can be skipped. Simulation results demonstrate that the proposed scheme can reduce the vertical handover latency under diverse environments.