Abstract
Mobile Ad hoc Network (MANET) routing protocols and Network Mobility (NEMO) Basic Support are considered key technologies for vehicular networks. MANEMO, that is, the combination of MANET (for infrastructureless communications) and NEMO (for infrastructure-based communications) offers a number of benefits, such as route optimization or multihoming. With the aim of assessing the benefits of this synergy, this paper presents a policy-based solution to distribute traffic among multiple paths to improve the overall performance of a vehicular network. An integral vehicular communication testbed has been developed to carry out field trials. First, the performance of the Optimized Link State Routing protocol (OLSR) is evaluated in a vehicular network with up to four vehicles. To analyze the impact of the vehicles' position and movement on network performances, an integrated evaluation environment called AnaVANET has been developed. Performance results have been geolocated using GPS information. Second, by switching from NEMO to MANET, routes between vehicles are optimized, and the final performance is improved in terms of latency and bandwidth. Our experimental results show that the network operation is further improved with simultaneous usage of NEMO and MANET.
Highlights
Terrestrial transportation is one of the most important services that support humans’ daily life
This paper describes the work done to combine Network Mobility (NEMO) and Mobile Ad hoc Network (MANET)/Vehicular Ad hoc Network (VANET) in a design that distributes traffic among multiple paths to improve the overall performance of the vehicular network
The second interesting condition identified in road W is the greater altitude of the sender car with regard to the receiver car, when these are located near corners NW and SW, respectively
Summary
Terrestrial transportation is one of the most important services that support humans’ daily life. Intelligent Transportation Systems (ITS) aim at enhancing road traffic safety and efficiency as well as optimizing social costs and improving drivers’ comfort by providing services such as fleet management, route guidance, billing, or infotainment. These days, communication technologies are more and more considered as a key factor for ITS deployment new approaches are needed to integrate mobile networks in the vehicle field. A number of ITS applications can be conceived when sensors deployed in vehicles are connected to the Internet and data collected from them is shared among vehicles and infrastructure. By reporting brake events, vehicles driving towards the affected road segment can be warned in advance and authorities can be ready for possible fatalities
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