Data-centric storage in sensornets with GHT, a geographic hash table
Mobile Networks and Applications
Q-NiGHT: Adding QoS to Data Centric Storage in Non-Uniform Sensor Networks
MDM '07 Proceedings of the 2007 International Conference on Mobile Data Management
Context-aware and location-based service discovery protocol for vehicular networks
Proceedings of the 6th ACM symposium on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Location-Aware Services over Vehicular Ad-Hoc Networks using Car-to-Car Communication
IEEE Journal on Selected Areas in Communications
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Recent studies on service discovery protocols in vehicular networks have shown promising results. However, very little work has been reported on how to integrate the fault tolerance and QoS features into service discovery protocols. These features are vital for the success of the deployment of service discovery protocols in vehicular networks. Drivers on their cars should not have their requests dissatisfied or their connections dropped because a service provider or some components between the service provider and the service requester have failed. Moreover, it is very important to provide users with services that suit better to their requests while balancing the load on service providers. In addition, for a service discovery protocol integrated with routing protocols, it is important to guarantee load balancing on routing paths between service providers and service requesters. In this paper, we present a QoS and fault tolerant location based service discovery protocol for vehicular networks. The main advantages of our protocol is its ability to tolerate service providers failure, communication links failure and roadside routers failure. Moreover, our protocol guarantees load balancing on service providers, and routing paths between service providers and service requesters. It permits also to choose service providers and routing paths between service providers and service requesters that satisfy some performance attributes specified by service requesters. We present our fault tolerance and QoS based service discovery protocol in vehicular networks, and report on its performance evaluation. Our simulation experiments show that our proposed QoS and fault tolerant based location based service discovery algorithm improves the success and connection rates significantly over the original LocVSDP.