Mobile Ad hoc Network (MANET) is an infrastructure-less network formedbetween a set of mobile nodes. The discovery of services in MANET is achallenging job due to the unique properties of network. In this paper, a novelservice discovery framework called Hybrid Association Rules Based Network LayerDiscovery of Services for Ad hoc Networks (HANDY) has been proposed. HANDYprovides three major research contributions. At first, it adopts a cross-layeroptimized design for discovery of services that is based on simultaneousdiscovery of services and corresponding routes. Secondly, it provides amulti-level ontology-based approach to describe the services. This resolves theissue of semantic interoperability among the service consumers in a scalablefashion. Finally, to further optimize the performance of the discovery process,HANDY recommends exploiting the inherent associations present among theservices. These associations are used in two ways. First, periodic serviceadvertisements are performed based on these associations. In addition, when aresponse of a service discovery request is generated, correlated services arealso attached with the response. The proposed service discovery scheme has beenimplemented in JIST/SWANS simulator. The results demonstrate that the proposedmodifications give rise to improvement in hit ratio of the service consumersand latency of discovery process.
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