Pre-scheduled handoff for service-aware and seamless internet access

doi:10.1016/j.comnet.2016.10.005

	Pre-scheduled handoff for service-aware and seamless internet access
	Xie, Kun 1,2; Cao, Jiannong 3; Wang, Xin 2; Wen, Jigang 4
	2016-12-09
发表期刊	COMPUTER NETWORKS
ISSN	1389-1286
卷号	110 页码:324-337
摘要	Existing handoff techniques connect a user to a nearby access point whenever it is available along the user's moving path. If the path is not fully Wi-Fi covered, the user may suffer from frequent disconnections. In this work, we propose a pre-scheduled handoff scheme, which determines a quality-aware path so a mobile user can move across an Urban Wi-Fi Mesh network with uninterrupted Internet access at a required data rate. This scheme has several novel techniques. Firstly, by concurrently considering the received signal strength at mobile users and the load of mesh routers (MRs), we design two path finding metrics, contact weight and handoff count, according to the coverage information. Secondly, to measure the path metric in a practical mesh network with irregular and dynamic MR coverage, we propose a lightweight Bloom-filter-based polling algorithm to discover the mobile stations (called STAs) covered in MR, and a Bloom-filter-based probabilistic algorithm to estimate the degree of coverage overlapping among MRs. Thirdly, based on the path metrics, our proposed scheme supports flexible rate requirements from mobile users through a fully distributed multi-service-class path finding algorithm. Our pre-scheduled scheme considers both mobility and connection requirement, so that the mobile user can continuously access the Internet with the expected data rate. To our best knowledge, this is the first work to ensure seamless Internet access with rate consideration by finding a Wi-Fi covered geographic path in a practical wireless mesh network. We have carried out extensive simulations, and the simulation results show that the pre-scheduled handoff scheme can provide appealing high data rate to mobile user with minimum handoff delay. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Seamless internet access Handoff Mobility schedule
DOI	10.1016/j.comnet.2016.10.005
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[61572184] ; National Natural Science Foundation of China[51575167] ; National Natural Science Foundation of China[61300219] ; National Natural Science Foundation of China[61472131] ; U.S. National Science Foundation[ECCS-1231800] ; U.S. National Science Foundation[CNS 1247924]
WOS研究方向	Computer Science ; Engineering ; Telecommunications
WOS类目	Computer Science, Hardware & Architecture ; Computer Science, Information Systems ; Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000389389100024
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/7823
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Xie, Kun
作者单位	1.Hunan Univ, Coll Comp Sci & Elect Engn, Changsha 410082, Hunan, Peoples R China 2.SUNY Stony Brook, Dept Elect & Comp Engn, Stony Brook, NY 11794 USA 3.Hong Kong Polytech Univ, Dept Comp, Hong Kong, Hong Kong, Peoples R China 4.Chinese Acad Sci, Inst Comp Technol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Xie, Kun,Cao, Jiannong,Wang, Xin,et al. Pre-scheduled handoff for service-aware and seamless internet access[J]. COMPUTER NETWORKS,2016,110:324-337.
APA	Xie, Kun,Cao, Jiannong,Wang, Xin,&Wen, Jigang.(2016).Pre-scheduled handoff for service-aware and seamless internet access.COMPUTER NETWORKS,110,324-337.
MLA	Xie, Kun,et al."Pre-scheduled handoff for service-aware and seamless internet access".COMPUTER NETWORKS 110(2016):324-337.