Enhancing IEEE 802.11p/WAVE to provide infotainment applications in VANETs.
ABSTRACT IEEE 802.11p/WAVE (Wireless Access for Vehicular Environment) is the emerging standard to enable wireless access in the vehicular environment. Most of the research contributions in this area has focused on safety-related applications, while comfort and information/entertainment applications (such as on board Internet access, point-of-interest notification, e-map download) have been considered only recently. Notwithstanding, the user interest in this kind of applications is expected to become a big market driver in a near future. In this paper, an extension to IEEE 802.11p is proposed that is compliant with the multi-channel operation of the WAVE architecture and targets at the support of non-safety applications, while preserving the delivery of safety services. The proposed W-HCF (WAVE-based Hybrid Coordination Function) protocol leverages controlled access capabilities on top of the basic contention-based access of the IEEE 802.11p; it exploits vehicles’ position information and coordination among WAVE providers in order to improve performances of delay-constrained and loss-sensitive non-safety applications.
- [show abstract] [hide abstract]
ABSTRACT: This article presents a survey on vehicular telematics over heterogeneous wireless networks. An advanced heterogeneous vehicular network (AHVN) architecture is outlined which uses multiple access technologies and multiple radios in a collaborative manner. The challenges in designing the essential functional components of AHVN and the corresponding protocols (for radio link control, routing, congestion control, security and privacy, and application development) are discussed and the related work in the literature are reviewed. The open research challenges and several avenues for future research on vehicular telematics over heterogeneous wireless access networks are outlined.Computer Communications. 01/2010;
- [show abstract] [hide abstract]
ABSTRACT: In this paper we investigate the possibility of a new type of application, namely multiplayer games, in a Vehicular Ad Hoc Network (VANET) environment. First, we analyze the available empirical data on travel and traffic volume in the United States, and point out the most important challenges that have to be met in order to enable multiplayer games over VANET. We then propose a new paradigm of multiplayer games over VANET, one which utilizes the new, interactive and dynamic VANET environment, while adapting to its inherent constraints.Ad Hoc Networks. 01/2010;
Conference Proceeding: Multicast Voice Transmission over Vehicular Ad Hoc Networks: Issues and Challenges.[show abstract] [hide abstract]
ABSTRACT: In this paper we analyze the challenges and issues of transmitting multicast voice streams in a vehicular ad hoc network (VANET). The considered scenario focuses on the multicast transmission of multimedia signals (MP3 streams) between a static and a mobile node. We examine various technical solutions to guarantee vehicle-to-infrastructure connectivity, such as software enhancements and directional antennas. To overcome transmission problems, directions on how to build an optimized client-server streaming software suite are given. The proposed suite is tested with various safety messages in a real-world network testbed. Results of the experiments are presented in terms of both network layer (such as packet loss rate) and application layer (Mean Opinion Score) metrics. Results show how the specific context determines the distribution of error patterns. To improve the performance of the transmission by reducing the average burst error length, block interleaving techniques are taken into consideration. The presented results show that a reasoned choice of the hardware and software parameters enables the transmission of multicast vocal messages by means of the standard 802.11b protocol.Seventh International Conference on Networking (ICN 2008), 13-18 April 2008, Cancun, Mexico; 01/2008