tailieunhanh - Báo cáo hóa học: " Research Article A Sociability-Based Routing Scheme for Delay-Tolerant Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Sociability-Based Routing Scheme for Delay-Tolerant Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 251408 13 pages doi 2011 251408 Research Article A Sociability-Based Routing Scheme for Delay-Tolerant Networks Flavio Fabbri and Roberto Verdone Dipartimento di Elettronica Informatica e Sistemistica DEIS WiLAB University of Bologna Viale Risorgimento 2 40136 Bologna Italy Correspondence should be addressed to Flavio Fabbri Received 14 May 2010 Accepted 15 September 2010 Academic Editor Sergio Palazzo Copyright 2011 F. Fabbri and R. Verdone. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. The problem of choosing the best forwarders in Delay-Tolerant Networks DTNs is crucial for minimizing the delay in packet delivery and for keeping the amount of generated traffic under control. In this paper we introduce sociable routing a novel routing strategy that selects a subset of optimal forwarders among all the nodes and relies on them for an efficient delivery. The key idea is that of assigning to each network node a time-varying scalar parameter which captures its social behavior in terms of frequency and types of encounters. This sociability concept is widely discussed and mathematically formalized. Simulation results of a DTN of vehicles in urban environment driven by real mobility traces and employing sociable routing is presented. Encouraging results show that sociable routing compared to other known protocols achieves a good compromise in terms of delay performance and amount of generated traffic. 1. Introduction This paper introduces sociable routing a novel routing scheme for Delay-Tolerant Networks DTNs 1 and proposes its evaluation and assessment with respect to other existing protocols. The key idea of sociable routing is to solve the routing problem in DTNs 2

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