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Open AccessArticle

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

Department of Telematic Engineering, University Carlos III of Madrid, Avda. de la Universidad 30, 28911 Leganes, Madrid, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Leonhard M. Reindl
Sensors 2015, 15(7), 17621-17648; https://doi.org/10.3390/s150717621
Received: 3 June 2015 / Revised: 12 July 2015 / Accepted: 14 July 2015 / Published: 20 July 2015
(This article belongs to the Section Sensor Networks)
Service discovery plays an important role in mobile ad hoc networks (MANETs). The lack of central infrastructure, limited resources and high mobility make service discovery a challenging issue for this kind of network. This article proposes a new service discovery mechanism for discovering and advertising services integrated into the Optimized Link State Routing Protocol Version 2 (OLSRv2). In previous studies, we demonstrated the validity of a similar service discovery mechanism integrated into the previous version of OLSR (OLSRv1). In order to advertise services, we have added a new type-length-value structure (TLV) to the OLSRv2 protocol, called service discovery message (SDM), according to the Generalized MANET Packet/Message Format defined in Request For Comments (RFC) 5444. Each node in the ad hoc network only advertises its own services. The advertisement frequency is a user-configurable parameter, so that it can be modified depending on the user requirements. Each node maintains two service tables, one to store information about its own services and another one to store information about the services it discovers in the network. We present simulation results, that compare our service discovery integrated into OLSRv2 with the one defined for OLSRv1 and with the integration of service discovery in Ad hoc On-demand Distance Vector (AODV) protocol, in terms of service discovery ratio, service latency and network overhead. View Full-Text
Keywords: service discovery; OLSRv2; MANET service discovery; OLSRv2; MANET
MDPI and ACS Style

Vara, M.I.; Campo, C. Cross-Layer Service Discovery Mechanism for OLSRv2 Mobile Ad Hoc Networks. Sensors 2015, 15, 17621-17648.

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