A unified service discovery architecture for wireless mesh networks

Authors:
Martin Krebs;Karl-Heinz Krempels;Markus Kucay
Affiliations:
Department of Computer Science, Informatik 4, RWTH Aachen University, Germany, Aachen;Department of Computer Science, Informatik 4, RWTH Aachen University, Germany, Aachen;Department of Computer Science, Informatik 4, RWTH Aachen University, Germany, Aachen
Venue:
NETWORKING'08 Proceedings of the 7th international IFIP-TC6 networking conference on AdHoc and sensor networks, wireless networks, next generation internet
Year:
2008

Citing 4
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Abstract

This paper proposes a unified architecture for service discovery in Wireless Mesh Networks. In this architecture, routing clients and non-routing clients, which connect via a mesh gateway with Service Proxy (SP), can also participate seamlessly in the service discovery process. Therefore, the multicast DNS (mDNS) protocol is encapsulated in Optimized Link State Routing (OLSR) messages to make mDNS multi hop capable. Service Caches (SC) on wireless mesh routers are added for efficiency reasons. It is discussed that simple flooding of service discovery messages is not efficient and that inspection of messages at the application layer increases the efficiency of message propagation. We present a plug-in for an OLSR-daemon which is widely used in real world deployments. Finally, the measurements performed in the department's wireless mesh testbed are discussed with results and conclusions.