Results 31 to 40 of about 98,860 (223)

WLAN/WDS performance using directive antennas in highly mobile scenarios: experimental results [PDF]

open access: yes, 2008
This paper presents experimental results from a series of IEEE 802.11g studies to investigate the performance of vehicular to roadside wireless communications. In particular, two high-gain omni-directional antennas were used at the roadside access point,
Nix, AR, Zaggoulos, G
core   +2 more sources

Integrating LP-WAN Communications within the Vehicular Ecosystem

open access: yesJournal of Internet Services and Information Security, 2019
Vehicular communications are attracting the attention of both the academy and industry since some time ago. Most of the developed services rely on short-range communication technologies or on non-vehicular oriented cellular solutions such as 4G. In turn,
Ramon Sanchez-Iborra   +4 more
doaj   +1 more source

Enhancing energy efficiency for cellular-assisted vehicular networks by online learning-based mmWave beam selection

open access: yesEURASIP Journal on Wireless Communications and Networking, 2022
Millimeter Wave (mmWave) technology has been regarded as a feasible approach for future vehicular communications. Nevertheless, high path loss and penetration loss raise severe questions on mmWave communications.
Jinsong Gui, Yao Liu
doaj   +1 more source

On SDN to Support the IEEE 802.11 and C-V2X-Based Vehicular Communications Use-Cases and Performance: A Comprehensive Survey

open access: yesIEEE Access
SDN’s ability to provide a global view, centralized control, and flexibility in orchestrating network infrastructure are expected to overcome challenges in the dynamic conditions of vehicular communications.
Galih Nugraha Nurkahfi   +8 more
doaj   +1 more source

Link Setup Time Reduction by FILS on IEEE 802.11-Based Inter-Vehicular Communications

open access: yesIEEE Access, 2021
This paper reports the performance of link setup time reduction outlined by IEEE 802.11ai, which is also known as Fast Initial Link Setup (FILS), in real intermittent inter-vehicular communications.
Arata Kato   +7 more
doaj   +1 more source

Reverse back-off mechanism for safety vehicular ad hoc networks [PDF]

open access: yes, 2014
International audienceVehicular ad hoc networks can play an important role in enhancing transportation efficiency and improving road safety. Therefore, direct vehicle-to-vehicle communications are considered as one of the main building blocks of a future
André-Luc Beylot   +18 more
core   +6 more sources

Security-aware dual-hop communication for amplify-and-forward relay networks

open access: yesInternational Journal of Distributed Sensor Networks, 2019
The authentication scheme for vehicular ad hoc networks aims to improve the security and integrity of message delivery. The base station manages a large number of vehicular nodes, so the security communications are non-trivial.
Fei Ding   +5 more
doaj   +1 more source

Vehicular Network Simulation Environment via Discrete Event System Modeling

open access: yesIEEE Access, 2019
A vehicular ad-hoc network (VANET) enables vehicles to communicate with each other directly or via roadside infrastructure in order to improve road safety and efficiency.
Le Wang   +2 more
doaj   +1 more source

Performance evaluation of a cooperative reputation system for vehicular delay-tolerant networks [PDF]

open access: yes, 2014
In the last decade, both scientific community and automotive industry enabled communications among vehicles in different kinds of scenarios proposing different vehicular architectures. Vehicular delay-tolerant networks (VDTNs) were proposed as a solution
Dias, João A.F.F.   +3 more
core   +2 more sources

Harnessing Vehicle-to-Vehicle Communications for 3G Downloads on the Move

open access: yesInternational Journal of Distributed Sensor Networks, 2014
This paper studies the problem of 3G downloads in vehicles on the move. Although the 3G brings larger coverage and instant access to data transfer, it may also incur high cost. We observe that many applications of vehicular 3G users can actually tolerate
Yanmin Zhu, Qinghua Chen, Chao Chen
doaj   +1 more source

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