Service Discovery Protocol in Proactive Mobile Ad Hoc Networks

Abstract

This paper proposes a service discovery protocol for discovering and advertising services in a proactive ad hoc network. The protocol we have defined is piggybacked into the OLSR protocol. We define a new message type into OLSR called Service Discovery Message (SDM) for both advertisement and discovery of services. The advertisement frequency and advertisement lifetime are user-controlled parameters, so that they can be modified depending on the user requirements. Each node maintains a service cache to store information about its own services, and the services each device discovers in the network. We also present simulation results of our protocol and show that the service discovery protocol defined here achieves much efficiency in discovering services, while it introduces practically no packet overhead compared to the basic OLSR protocol.

Cross-Layer Service Discovery Mechanism for OLSRv2 Mobile Ad Hoc Networks

“…In previous works [ 8 , 9 ], we showed the feasibility of this service discovery protocol, as a proactive push-based service discovery mechanism, integrated into the OLSRv1 protocol for MANET networks. We analyzed the service discovery mechanism in terms of messaging overhead, service discovery ratio (efficiency of the service discovery) and latency.…”

“…The main focus of this article is to present a service discovery mechanism integrated into the OLSRv2 [ 6 ] protocol that supports service advertisements in ad hoc networks. This mechanism was previously defined for OLSRv1 [ 7 ] in [ 8 ]. In [ 9 ], we gave new results that demonstrate that the protocol could be a serious candidate for discovering services in proactive ad hoc networks.…”