NDLI: Energy-efficient adaptive interface activation for Delay/Disruption Tolerant Networks

Content Provider	IEEE Xplore Digital Library
Author	Izumikawa, H. Pitkanen, M. Ott, J. Timm-Giel, A. Bormann, C.
Copyright Year	2010
Description	Author affiliation: Helsinki University of Technology, Finland (Ott, J.) \|\| Helsinki Institute of Physics, Finland (Pitkanen, M.) \|\| Universität Bremen, TZI, Japan (Izumikawa, H.; Timm-Giel, A.; Bormann, C.)
Abstract	In sparse mobile networks, opportunistic access can be used to forward data in a so-called “store-carry-forward” manner using Delay/Disruption Tolerant Networking (DTN) techniques. In such environments, it is not always the case that a mobile terminal is within the communication range of other mobile terminals. Therefore, the terminal must first perform the energy-consuming process of “terminal discovery” before sending or receiving actual data. Since a mobile terminal is normally battery powered, it is a mandatory requirement to cut power consumption. Therefore, the discovery process must be executed efficiently. In other words, it is imperative to activate a network interface at the right time. In this paper, we analyze the performance issues with simple periodical interface activation and propose a new activation mechanism called DWARF (DTN-oriented wireless interface activation mechanism based on radio fluctuations) for efficiently discovering other terminals with less expenditure of energy. In the proposed mechanism, the interface activation interval is adjusted based on the surroundings. DWARF is a distributed mechanism and does not require prior knowledge such as patterns of human behavior. Computer simulation results show that DWARF discovers other terminals about 3.5 times more efficiently than a fixed-interval scheme without missing opportunities for connection.
Starting Page	645
Ending Page	650
File Size	8836796
Page Count	6
File Format	PDF
ISBN	9781424454273
ISSN	17389445
e-ISBN	9781424454280
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-07
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Electronics and Telecommunications Research Institute
Subject Keyword	Energy efficiency Disruption tolerant networking Mobile communication Batteries Energy consumption Network interfaces Performance analysis Fluctuations Humans Computer simulation Communication interface activation Delay tolerant network
Content Type	Text
Resource Type	Article

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