Title:	SELF ORGANIZING SERVICE DISCOVERY IN MANETS EXEMPLIFIED IN MOBILE HOSPITALS
Author(s):	Michael Kreutzer , Martin Kähmer , Karlo Magdic
ISBN:	972-98947-5-2
Editors:	Pedro Isaías, Piet Kommers and Maggie McPherson
Year:	2004
Edition:	1
Keywords:	Mobile ad-hoc networks, middleware, service discovery, self-organization, clustering, mobile hospitals.
Type:	Full Paper
First Page:	581
Last Page:	588
Language:	English
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Full Contents:	click to dowload
Paper Abstract:	Using service discovery as a key middleware component has the potential to hide the dynamic properties of mobile adhoc networks (MANETs) from the application layer. However, a service discovery approach should be optimized for the use in MANETs to manage both of the challenges: the constantly changing topology caused by the mobility of the nodes and the constantly changing size of the network caused by devices entering and leaving the network. This paper claims that a self-organizing and scalable service discovery approach called HYDRA provides a way to enable reliable access to services on the middleware layer. HYDRA makes use of the assumption that most of the required services are in the local surrounding of the service seeker. This assumption applies for many applications of the regarded domain of infrastructure-less applications, especially for the here given scenario of mobile hospitals. HYDRA’s distribution strategy of the service discovery components is based on local views and local decisions and automatically adapts to the current size and topology of the MANET. The algorithm has been implemented in a test environment with promising results.
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