Article Abstract

	Title:	A Geo-Located Web Services Architecture for next generation mobile networks
	Author:	Andre Claude Bayomock Linwa, Samuel Pierre
	Address:	Mobile Computing and Networking Research Laboratoty (LARIM), Ecole Polytechnique de Montreal, C.P. 6079, Station Succ. Centre Ville, Montreal, Quebec H3C 3A7, Canada. ' Department of Computer Engineering, Ecole Polytechnique de Montreal, C.P. 6079, Station Succ. Centre Ville, Montreal, Quebec H3C 3A7, Canada
	Journal:	International Journal of Web and Grid Services 2005 - Vol. 1, No.3/4  pp. 365 - 396
	Abstract:	As many geo-located web services will be deployed in the future, the mobile clients will be interested in locating a specific application server based on requirements such as proximity, service cost per location area, bandwidth and server utilisation rate. This paper presents a middleware system named GLWSA (Geo-Located Web Services Architecture) that aims at satisfying these requirements as well as a thematic factorisation of common location functions used to get position of mobile clients. A GLWSA supports a set of GLWSMs (Geo-Located Web Services Manager) distributed over the mobile network. It defines protocols to discover and inform a Supplier Application Server (SAS) to migrate the service execution (of a specific client) to the nearest SAS based on the client's location. This architecture is suitable to assist mobile clients in the discovering geo-located web services process and to maintain the service execution closest to their location context.
	Keywords:	geo-located services; next generation mobile networks; service discovery; web services; mobile communications; middleware; location functions.
	DOI:	10.1504/IJWGS.2005.008394
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