A Novel Architecture and Mechanism for On-demand Services in Vehicular Networks with Minimum Overhead in Target Vehicle Tracking

摘要

Vehicular Ad hoc Networks (VANETs) are one of the building blocks for future Intelligent Transportation Systems (ITS). They will support applications for safety and entertainments on the streets. VANETs also provide an excellent potential for on-demand services. Such services in VANETs require real-time request-reply routing between vehicle client and service provider, and also tracking of client location. The vehicle requesting for a service acts as a client. The service provider communicates with clients through fixed base stations. Due to frequent link break-ups in VANET communications, maintaining a one-to-one communication path between service provider and client is an open issue. We refer to such one-to-one communication as the unicast service. In this paper, we propose a novel architecture to solve the unicast service provisioning and vehicle tracking in an integrated manner. Simulation results show that our proposed model reduces network overhead dramatically, and provides an on-demand unicast service with acceptable delivery delay and delivery ratio.