Toward Distributed Service Discovery in Pervasive Computing Environments
MARYLAND UNIV BALTIMORE DEPT OF COMPUTER SCIENCE AND ELECTRICAL ENGINEERING
Pagination or Media Count:
The paper proposes a novel distributed service discovery protocol for pervasive environments. The protocol is based on the concepts of peer-to-peer caching of service advertisements and group-based intelligent forwarding of service requests. It does not require a service to be registered with a registry or lookup server. Services are described using the Web Ontology Language OWL. We exploit the semantic classsubClass hierarchy of OWL to describe service groups and use this semantic information to selectively forward service requests. OWL-based service description also enables increased flexibility in service matching. We present simulation results that show that our protocol achieves increased efficiency in discovering services compared to traditional broadcast-based mechanisms by efficiently utilizing bandwidth via controlled forwarding of service requests.
- Computer Programming and Software
- Computer Systems
- Radio Communications