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This chapter presents an overview of the technological development of wireless communication, with particular emphasis on car communications. The development of vehicular communication networks has created a variety of emergency services and applications. A vehicular access network is often classified into vehicle‐to‐vehicle (V2V) and vehicle‐to‐infrastructure (V2I) communications. There are many...
The European Eureka/Celtic Plus project CoMoSeF (Co-operative Mobility Services of the Future) aims to create co-operative mobility solutions (including devices and applications), feasible for large scale deployment. In practice this means combined vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I), communication system employing interactive example services related to safety and weather...
For vehicular networking purposes the main communication standard approach on global scale is the IEEE 802.11p. This protocol-based system, together with the 3G cellular network, was the main elements of our car communications test-bed network. The developed test-bed implements an intelligent heterogeneous traffic safety network between cars and infrastructure. It also offers the possibility to exploit...
Wireless media for vehicular networking purposes with support for instantaneously delivered safety messages is the ultimate design goal of IEEE 802.11p. Even if the full standard is just on the final approval phase, some compatible equipment has been already available in the markets for a while, making it possible to evaluate the performance enhancements motivated the standard development. This paper...
This paper introduces an embedded control system for cognitive flow management of delay sensitive real-time traffic to improve quality of service (QoS) in Wireless Local Area Networks (WLANs). The management system is based on the fuzzy set theory. It adjusts transceivers' traffic flow(s) for prevailing network conditions to achieve application dependent quality of service requirements by regulating...
Vehicular networking is nowadays very hot topic within the research field of telecommunications. Lot of different approaches exist, although the standard approach called IEEE 802.11p is gaining the majority of interest. Even if IEEE 802.11p seems to be the main approach, the operability in real conditions has not yet been under careful consideration. This paper presents the vehicular networking simulations,...
This paper introduces control systems, which regulate tranceivers' packet sizes for prevailing network conditions to achieve maximum throughput and minimum delay for real-time traffic in Wireless Local Area Networks (WLANs). Delay and throughput are very much dependent on the packet size and the connection density. Therefore, the selected input parameters for the controllers are one-way delay and...
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