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Emergency message broadcasting scheme based on V2V and V2I
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Authors: Zhengtao Xiang, Yu Zhang, Yufeng Chen, Yingkui Ma, Hanwen Cao, Li Tian
Status: Final
Date of publication: 24 November 2023
Published in: ITU Journal on Future and Evolving Technologies, Volume 4 (2023), Issue 4, Pages 549-561
Article DOI : https://doi.org/10.52953/KXNW4283
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Abstract:
As an important part of the advanced Intelligent Traffic System (ITS) in the Internet of Vehicles (IoV), Vehicle to everything (V2X) communication technology provides reliable end-to-end connection and efficient packet transmission. Currently, the main challenge is design and implementation of the multi-hop broadcast protocol. In particular, the network topology is constantly changing because of the high-speed vehicle and diversified road structure, which troubles the selection of forward nodes. Therefore, we propose an Emergency Message Broadcast Protocol (EMBP). In this method, we select the optimal relay node according to the directionality and mobility, channel fading, and link connectivity and apply a suboptimal relay node selection mechanism to guarantee the reliability of broadcast. Simulation results show that EMBP is more efficient and stable than part classical protocols. Due to the complex communication environment of urban roads, to better improve the reliability of emergency message transmission, a broadcasting scheme Roadside Unit (RSU) Emergency Message Broadcast Protocol (REMBP), based on Vehicle to Vehicle (V2V) and Vehicle to Road (V2R) hybrid transmission of emergency messages is proposed on the basis of EMBP. Compared with EMBP, REMBP has better performance in terms of delivery rate, number of forwarding hops, end-to-end delay, average number of collisions, number of packet redundancy, and number of retransmissions. |
Keywords: Emergency message, Internet of Vehicles, multi-hop broadcast, protocol, relay node
Rights: © International Telecommunication Union, available under the CC BY-NC-ND 3.0 IGO license.
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