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Proceedings ArticleDOI

Vehicle-to-vehicle safety messaging in DSRC

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TLDR
The results show the approach proposed is feasible for vehicle safety messages in DSRC and is compatible with the Dedicated Short Range Communications (DSRC) multi-channel architecture.
Abstract
This paper studies the design of layer-2 protocols for a vehicle to send safety messages to other vehicles. The target is to send vehicle safety messages with high reliability and low delay. The communication is one-to-many, local, and geo-significant. The vehicular communication network is ad-hoc, highly mobile, and with large numbers of contending nodes. The messages are very short, have a brief useful lifetime, but must be received with high probability. For this environment, this paper explores the efficacy of rapid repetition of broadcast messages. This paper proposes several random access protocols for medium access control. The protocols are compatible with the Dedicated Short Range Communications (DSRC) multi-channel architecture. Analytical bounds on performance of the proposed protocols are derived. Simulations are conducted to assess the reception reliability and channel usage of the protocols. The sensitivity of the protocol performance is evaluated under various offered traffic and vehicular traffic flows. The results show our approach is feasible for vehicle safety messages in DSRC.

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Citations
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Securing vehicular ad hoc networks

TL;DR: This paper provides a set of security protocols, it is shown that they protect privacy and it is analyzed their robustness and efficiency, and describes some major design decisions still to be made.
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Vehicular Networking: A Survey and Tutorial on Requirements, Architectures, Challenges, Standards and Solutions

TL;DR: The basic characteristics of vehicular networks are introduced, an overview of applications and associated requirements, along with challenges and their proposed solutions are provided, and the current and past major ITS programs and projects in the USA, Japan and Europe are provided.
Proceedings ArticleDOI

The security of vehicular ad hoc networks

TL;DR: A set of security protocols are provided, it is shown that they protect privacy and the robustness of these protocols are analyzed, and a quantitative assessment of the proposed solution is carried out.
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VADD: Vehicle-Assisted Data Delivery in Vehicular Ad Hoc Networks

TL;DR: This work proposes several vehicle-assisted data delivery (VADD) protocols to forward the packet to the best road with the lowest data-delivery delay, and Experimental results show that the proposed VADD protocols outperform existing solutions in terms of packet-del delivery ratio, data packet Delay, and protocol overhead.
Proceedings ArticleDOI

VADD: Vehicle-Assisted Data Delivery in Vehicular Ad Hoc Networks

TL;DR: This work proposes several vehicle-assisted data delivery (VADD) protocols to forward the packet to the best road with the lowest data-delivery delay, and Experimental results show that the proposed VADD protocols outperform existing solutions in terms of packet-del delivery ratio, data packet Delay, and protocol overhead.
References
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The capacity of wireless networks

TL;DR: When n identical randomly located nodes, each capable of transmitting at W bits per second and using a fixed range, form a wireless network, the throughput /spl lambda/(n) obtainable by each node for a randomly chosen destination is /spl Theta/(W//spl radic/(nlogn)) bits persecond under a noninterference protocol.
Journal ArticleDOI

Performance analysis of the IEEE 802.11 distributed coordination function

TL;DR: In this paper, a simple but nevertheless extremely accurate, analytical model to compute the 802.11 DCF throughput, in the assumption of finite number of terminals and ideal channel conditions, is presented.
Journal ArticleDOI

Packet Switching in Radio Channels: Part I--Carrier Sense Multiple-Access Modes and Their Throughput-Delay Characteristics

TL;DR: Two protocols are described for CSMA and their throughput-delay characteristics are given and results show the large advantage CSMA provides as compared to the random ALOHA access modes.
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