The overall objective is to utilize heterogeneity in order to improve quality of service (QoS) support for communication with the Internet in a vehicular environment. An important characteristic in this heterogeneous communication scenario is that the available communication systems typically have different characteristics and capabilities: Whereas an IEEE 802.11 network may provide data rates of up to 54 Mbit/s in a restricted geographical area, cellular communication systems like GPRS provide area-wide coverage with data rates of up to 384 kbit/s with highly varying data rates and delays. The communication costs also differ significantly; whereas Internet access by the IVC system is very cheap or even free of charge, the costs for UMTS are expected to be very high and may depend on connection times and/or data volume. The QoS support also depends on the requirements of the IP-based applications running on the communication platform located in the vehicle. In order to bring together these different issues, protocol mechanisms are needed. Vehicles typically travel in heterogeneous overlay networks where several communication systems may be available simultaneously. This way, a vehicle has the choice to decide which communication system to be used for Internet access. In order to utilize this heterogeneity, the authors propose a management entity called MoccaMuxer located in the network layer of a communication system. This management entity integrated itself seamlessly into a proxy-based communication architecture, which is typically used for the Internet integration of inter-vehicle communication systems. The MoccaMuxer is able to determine the most suitable communication system using fuzzy logic, and it dynamically hands off connections after the decision to the new communication system in a seamless way.
Fuzzy logic based handoffs in vehicular communication environments
FuzzyLogik basierte Verbindung im Kommunikationsumfeld von Fahrzeuen
2005
5 Seiten, 5 Bilder, 12 Quellen
Conference paper
English
Fuzzy Logic Based Handoffs in Vehicular Communication Environments
British Library Conference Proceedings | 2005
|Fuzzy Logic-Based Broadcast in Vehicular Ad Hoc Networks
IEEE | 2016
|Transportation Research Record | 2012
|