InVANET

Communication capabilities in vehicles are the basis of an envisioned Intelligent Vehicular AdHoc Network (InVANET) or Intelligent Transportation Systems (ITS). Vehicles are enabled to communicate among themselves (vehicle-to-vehicle, V2V) and via roadside access points (vehicle-to-roadside, V2R).
Vehicular communication is expected to contribute to safer and more efficient roads by providing timely information to drivers, and also to make travel more convenient. The integration of V2V and V2R communication is beneficial due to the fact that V2R provides better service sparse networks and long distance communication, whereas V2V enables direct communication for small to medium distances/areas and at locations where roadside access points are not available.

For both, mobile ad hoc and infrastructure-based communication with mobile nodes, solutions exist and are applied to vehicular environments. For adhoc routing, position-based routing has emerged as a promising candidate. Likewise, for nfrastructurebased communication with mobile hosts, such as cellular networks, Mobile IPv6 represents a wellknown solution for mobility support based on IP addressing and packet forwarding. For integration of Mobile IPv6 and ad hoc routing a number of technical problems need to be solved, including the efficient distribution of router advertisements, selection of Internet gateways, and movement detection of the mobile node.

Currently there is ongoing research in the field of intelligent vehicular ad-hoc networks (InVANET) for several scenarios. The main interest is in applications for traffic scenarios, mobile phone systems, sensor networks and future combat systems. Recent research has focused on topology related problems such as range optimization, routing mechanisms, or address systems, as well as security issues like traceability or encryption. In addition, there are very specific research interests such as the effects of directional antennas for InVANETs and minimal power consumption for sensor networks. Most of this research aims either at a general approach to wireless networks in a broad setting or focus on an extremely specific issue.

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