Authors: Andre Claude Bayomock Linwa, Samuel Pierre
Addresses: 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
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.
International Journal of Web and Grid Services, 2005 Vol.1 No.3/4, pp.365 - 396
Published online: 17 Dec 2005 *Full-text access for editors Access for subscribers Purchase this article Comment on this article