2014 | OriginalPaper | Buchkapitel
A Link State Aware Hierarchical Road Routing Protocol for 3D Scenario in VANETs
verfasst von : Ying He, Changle Li, Xiaolei Han, Qin Lin
Erschienen in: Internet of Vehicles – Technologies and Services
Verlag: Springer International Publishing
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In urban VANETs, nodes on the road appear three-dimensional (3D) distribution. However, the existing protocols only consider the case of planar distribution. It may cause problems in 3D scenarios, like hop count increase and packet delivery ratio decrease. Moreover, most of plane-based protocols determine the road connectivity by collecting the node density information, but it does not accurately reflect the road connectivity. Hence, we propose a novel protocol named Link State aware Hierarchical Road routing (LSHR). LSHR selects the next intersection based on the distance and the road connectivity. Meanwhile, LSHR represents the road connectivity more accurately. In addition, considering the problems of hop count increase and packet delivery ratio decrease, LSHR prior selects the neighbor has the largest transmission range of two hops as the forwarder. Comparing with classic protocols, LSHR is shown to increase the packet delivery ratio and decrease the end-to-end delay and hop count in simulation.