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 Opportunistic P2P Communications in Delay-Tolerant Rural Scenarios | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 892038 14 pages doi 2011 892038 Research Article Opportunistic P2P Communications in Delay-Tolerant Rural Scenarios Marcel C. Castro 1 Laura Galluccio 2 Andreas Kassler 1 and Corrado Rametta2 1 Computer Science Department Telematics Karlstad University Sweden 2Dipartimento di Ingegneria Informatica e delle Telecomunicazioni universita di Catania Italy Correspondence should be addressed to Laura Galluccio lauragalluccio@ Received 16 May 2010 Revised 13 September 2010 Accepted 14 October 2010 Academic Editor Andrew T. Campbell Copyright 2011 Marcel C. Castro et al. 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. Opportunistic networking represents a promising paradigm for support of communications specifically in infrastructureless scenarios such as remote areas communications. In principle in opportunistic environments we would like to make available all the applications thought for traditional wired and wireless networks like file-sharing and content distribution. In this paper we present a delay-tolerant scenario for file sharing applications in rural areas where an opportunistic approach is exploited. In order to support communications we compare two peer-to-peer P2P schemes initially conceived for wireless networks and prove their applicability and usefulness to a DTN scenario where replication of resources can be used to improve the lookup performance and the network can be occasionally connected by means of a data mule. Simulation results show the suitability of the schemes and allow to derive interesting design guidelines on the convenience and applicability of such approaches. 1. Introduction Opportunistic networking has attracted the interest of researchers in the last .
