Topic
Vehicular communication systems
About: Vehicular communication systems is a research topic. Over the lifetime, 2532 publications have been published within this topic receiving 64775 citations. The topic is also known as: V2V & vehicle-to-vehicle.
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TL;DR: Two physical layer (PHY) security techniques for vehicular mmWave communication systems are proposed that provide higher secrecy rate when compared to traditional PHY security techniques that require digital or more complex antenna architectures.
Abstract: Millimeter wave (mmWave) vehicular communication systems will provide an abundance of bandwidth for the exchange of raw sensor data and support driver-assisted and safety-related functionalities. Lack of secure communication links, however, may lead to abuses and attacks that jeopardize the efficiency of transportation systems and the physical safety of drivers. In this paper, we propose two physical layer (PHY) security techniques for vehicular mmWave communication systems. The first technique uses multiple antennas with a single radio-frequency (RF) chain to transmit information symbols to a target receiver and noise-like signals in nonreceiver directions. The second technique uses multiple antennas with a few RF chains to transmit information symbols to a target receiver and opportunistically inject artificial noise in controlled directions, thereby reducing interference in vehicular environments. Theoretical and numerical results show that the proposed techniques provide higher secrecy rate when compared to traditional PHY security techniques that require digital or more complex antenna architectures.
80 citations
01 Oct 2004
TL;DR: Several enhancements to a popular swarming protocol (BitTorrent) are discussed including a gossip mechanism that leverages the inherent broadcast nature of the wireless medium, and a piece-selection strategy that uses proximity to exchange pieces quicker.
Abstract: Future vehicular networks are expected to deploy short-range communication technology for inter-vehicle communication In addition to vehicle-to-vehicle communication, users will be interested in accessing the multimedia-rich Internet from within the vehicular network This motivates a compelling application of Co-operative Networking in the Vehicular Ad-Hoc network where the Ad Hoc network extends and complements the Internet The broadcast nature of the wireless medium drives us to explore different design paradigms from the ones used in typical wired settingsA new paradigm in content delivery on the Internet using peer-peer swarming protocols is emerging [1,2] We propose SPAWN, a simple cooperative strategy for content delivery in future vehicular networks We study the issues involved in using such a strategy from the standpoint of Vehicular Ad-Hoc networks Several enhancements to a popular swarming protocol (BitTorrent) are discussed including a gossip mechanism that leverages the inherent broadcast nature of the wireless medium, and a piece-selection strategy that uses proximity to exchange pieces quicker Preliminary results show that SPAWN increases the perceived performance of the network, resulting in faster downloads for popular files
80 citations
TL;DR: This paper motivates the usage of GPS- and vehicle velocity data for geocast applications in the vehicular environment and describes the prototype that is developing based on NIST-AODV.
Abstract: Because of its reactive nature, AODV can handle the highly-dynamic behavior of vehicular Ad-Hoc networks relatively efficiently. However, in addition to link status information, a lot of other information is available within cars, e.g. information about speed and location as well as digital maps. The realization of some of the envisioned application scenarios depends on the additional usage of this information. In this paper, we motivate the usage of GPS- and vehicle velocity data for geocast applications in the vehicular environment. We also describe the prototype that we are developing based on NIST-AODV [4].
79 citations
Dissertation•
01 Jan 2001
79 citations
TL;DR: The experimental results prove the effectiveness of the bioinspired scheme and confirm that the proposed network selection method provides better global performance when compared with the utility function method with greedy optimization.
Abstract: With the increasing demands for vehicle-to-vehicle and vehicle-to-infrastructure communications in intelligent transportation systems, new generation of vehicular telematics inevitably depends on the cooperation of heterogeneous wireless networks. In heterogeneous vehicular telematics, the network selection is an important step to the realization of multimode communications that use multiple access technologies and multiple radios in a collaborative manner. This paper presents an innovative network selection solution for the fundamental technological requirement of multimode communications in heterogeneous vehicular telematics. To guarantee the QoS satisfaction of multiple mobile users and the efficient utilization and fair allocation of heterogeneous network resources in a global sense, a dynamic and self-adaptive method for network selection is proposed. It is biologically inspired by the cellular gene network, which enables terminals to dynamically select an appropriate access network according to the variety of QoS requirements and to the dynamic conditions of various available networks. The experimental results prove the effectiveness of the bioinspired scheme and confirm that the proposed network selection method provides better global performance when compared with the utility function method with greedy optimization.
79 citations