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International Journal of Distributed Sensor Networks
Volume 2013 (2013), Article ID 145727, 16 pages
http://dx.doi.org/10.1155/2013/145727
Review Article

Study on Routing Protocols for Delay Tolerant Mobile Networks

School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China

Received 11 October 2012; Accepted 6 December 2012

Academic Editor: Nianbo Liu

Copyright © 2013 Haigang Gong and Lingfei Yu. 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.

Abstract

Delay tolerant mobile networks feature with intermittent connectivity, huge transmission delay, nodal mobility, and so forth. There is usually no end-to-end path in the networks and it poses great challenges for routing in DTMNs. In this paper, the architecture of DTMNs is introduced at first, including the characteristics of DTMNs, routing challenges, and metric and mobility models. And then, the state-of-the-art routing protocols for DTMNs are discussed and analyzed. Routing strategies are classified into three categories: nonknowledge-based approach, knowledge-based approach, and social-based approach. Finally, some research issues about DTMNs are presented.