Performance analysis and optimization of handoff algorithms in heterogeneous wireless networks

doi:10.1109/TMC.2007.70768

CORC > 计算技术研究所 > 中国科学院计算技术研究所 > 中国科学院计算技术研究所期刊论文 > 英文

	Performance analysis and optimization of handoff algorithms in heterogeneous wireless networks
	Liu, Min 1; Li, Zhongcheng 1; Guo, Xiaobing 2; Dutkiewicz, Eryk 3
刊名	IEEE TRANSACTIONS ON MOBILE COMPUTING
	2008-07-01
卷号	7 期号:7 页码:846-857
关键词	heterogeneous wireless networks vertical handoff horizontal handoff
ISSN号	1536-1233
DOI	10.1109/TMC.2007.70768
英文摘要	The convergence of heterogeneous wireless access technologies with diverse levels of performance has been envisioned to characterize the next-generation wireless networks. In heterogeneous wireless networks, handoff can be separated into two parts: horizontal handoff (HHO) and vertical handoff (VHO). VHO plays an important role in fulfilling seamless data transfer when mobile nodes cross wireless access networks with different link layer technologies. Current VHO algorithms mainly focus on when to trigger VHO to improve connection QoS but neglect the problem of how one can synthetically consider all currently available networks (homogeneous or heterogeneous) and choose the optimal network for HHO or VHO from all available candidates. In this paper, we present an analytical framework to evaluate VHO algorithms. This framework can be used to provide guidelines for the optimization of handoff in heterogeneous wireless networks. Subsequently, we extend the traditional hysteresis-based and dwelling-timer-based algorithms to support both VHO and HHO decisions and apply them to complex heterogeneous wireless environments. We refer to these enhanced algorithms as E-HY and E-DW, respectively. Based on the proposed analytical model, we provide a formalization definition of the handoff conditions in E-HY and E-DW and analyze their performance. Subsequently, we propose a novel general handoff decision algorithm GHO to trigger HHO and VHO in heterogeneous wireless networks at the appropriate time. Analysis shows that GHO can achieve better performance than E-HY and E-DW. Simulations validate the analytical results and verify that GHO outperforms traditional algorithms in terms of the matching ratio, TCP throughput, and UDP throughput.
WOS研究方向	Computer Science ; Telecommunications
语种	英语
出版者	IEEE COMPUTER SOC
WOS记录号	WOS:000255792700003
内容类型	期刊论文
源URL	[http://119.78.100.204/handle/2XEOYT63/11202]
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Liu, Min
作者单位	1.Chinese Acad Sci, Inst Comp Technol, Key Lab Network Sci, Beijing 100190, Peoples R China 2.Lenovo Corp Res & Dev, Collaborat Comp Lab, Beijing 100085, Peoples R China 3.Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia
推荐引用方式 GB/T 7714	Liu, Min,Li, Zhongcheng,Guo, Xiaobing,et al. Performance analysis and optimization of handoff algorithms in heterogeneous wireless networks[J]. IEEE TRANSACTIONS ON MOBILE COMPUTING,2008,7(7):846-857.
APA	Liu, Min,Li, Zhongcheng,Guo, Xiaobing,&Dutkiewicz, Eryk.(2008).Performance analysis and optimization of handoff algorithms in heterogeneous wireless networks.IEEE TRANSACTIONS ON MOBILE COMPUTING,7(7),846-857.
MLA	Liu, Min,et al."Performance analysis and optimization of handoff algorithms in heterogeneous wireless networks".IEEE TRANSACTIONS ON MOBILE COMPUTING 7.7(2008):846-857.