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

被引：25
作者：
Kim, Younghyun [1 ,3 ]
Pack, Sangheon [1 ,2 ]
Kang, Chung Gu [1 ,4 ]
Park, Soonjun
机构：
[1] Korea Univ, Sch Elect Engn, Seoul, South Korea
[2] Univ Waterloo, Broadband Commun Res Grp, Waterloo, ON N2L 3G1, Canada
[3] Celrun Inc, Seoul, South Korea
[4] Korea Univ, Dept Radio Commun Engn, Seoul, South Korea
来源：
COMPUTER NETWORKS | 2011年 / 55卷 / 01期
关键词：
Vertical handover; IEEE; 802.21; MIH; Spatial locality; Temporal locality; Enhanced information server; MOBILITY MANAGEMENT;
D O I：
10.1016/j.comnet.2010.08.005
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
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. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：147 / 158
页数：12
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