NDLI: A dynamic relay selection scheme for mobile users in wireless relay networks

Content Provider	IEEE Xplore Digital Library
Author	Yifan Li Ping Wang Niyato, D. Weihua Zhuang
Copyright Year	2011
Description	Author affiliation: School of Computer Engineering, Nanyang Technological University, Singapore 639798 (Yifan Li; Ping Wang; Niyato, D.) \|\| Department of Electrical and Computer Engineering, University of Waterloo, Canada (Weihua Zhuang)
Abstract	Cooperative communication has attracted dramatic attention in the last few years due to its advantage in mitigating channel fading. Despite much effort that has been made in theoretical analysis of the performance gain, cooperative relay selection, which is one of the fundamental issues in cooperative communications, is still left as an open problem. In this paper, the tradeoff between improvement and corresponding cost of cooperative communication, focusing on relay selection is addressed. We consider a challenging scenario which takes user mobility into consideration. Based on user mobility pattern, a dynamic relay selection scheme aiming at minimizing the long-term average cost while satisfying the QoS requirement is proposed. For relay selection to achieve maximal performance, an optimization model based on the constrained Markov decision process (CMDP) is formulated and solved by applying the linear programming (LP) technique. Comprehensive analysis and comparison with several other relay selection schemes are presented. Through extensive simulations, our scheme shows its high effectiveness and flexibility in balancing the cost and QoS performance.
Starting Page	256
Ending Page	260
File Size	622287
Page Count	5
File Format	PDF
ISBN	9781424499199
ISSN	0743166X
e-ISBN	9781424499212
DOI	10.1109/INFCOM.2011.5935082
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-04-10
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Throughput
Content Type	Text
Resource Type	Article
Subject	Computer Science Electrical and Electronic Engineering

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