Design and implementation of a delay-tolerant network emulator based in QualNet simulator

Authors:
Zhenjing Zhang;Zhigang Jin;Huan Chen;Yantai Shu;Chuandong Zhao
Affiliations:
Dept. Computer Engineering, Tianjin University, Tianjin, China;School of Electronics and Information Engineering, Tianjin University, Tianjin, China;Dept. Computer Engineering, Tianjin University, Tianjin, China;Dept. Computer Engineering, Tianjin University, Tianjin, China;Dept. Computer Engineering, Tianjin University, Tianjin, China
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

Delay tolerant network (DTN) is a network which implies asynchronous communication and does not require an end-to-end path at any point in time. Its main characteristic is the links between nodes are volatile and may break down for a long time at any time, so it can't be assumed that a path exists between the source node and the destination node. The current studies on DTN mainly use theoretical analysis, simulation and tesbed, so employing the emulation in DTN is a new topic and has great significance. The benefits of emulation include the explanation of the experimental scale and the ability to expose experimental algorithms and protocols to live traffic loads. In addition, through the emulation, we can give a controlled, repeatable environment. In this paper we propose a design and implementation technology of the emulation of DTN protocol in the QualNet simulator. Preliminary emulation results show that emulation is capable of assisting the study.