Analysis and Optimization of Multi-hop Broadcast Communication in the Internet of Vehicles Based on C-V2X Mode 4

Cellular Vehicle-to-Everything (C-V2X) Mode 4, developed by 3GPP, supports vehicle-to-vehicle communication without a cellular base station via LTE sidelink. The messages transmitted in the Internet of Vehicles (IoV) include periodic single-hop broadcast Beacon messages and multi-hop broadcast Emerg...

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Veröffentlicht in:IEEE sensors journal 2022-05, p.1-1
Hauptverfasser: Pei, Zhonghui, Chen, Wei, Li, Changzhen, Du, Luyao, Liu, Huiheng, Wang, Xiaojun
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Du, Luyao
Liu, Huiheng
Wang, Xiaojun
description Cellular Vehicle-to-Everything (C-V2X) Mode 4, developed by 3GPP, supports vehicle-to-vehicle communication without a cellular base station via LTE sidelink. The messages transmitted in the Internet of Vehicles (IoV) include periodic single-hop broadcast Beacon messages and multi-hop broadcast Emergency messages triggered by events. In this paper, we analyze the impact of multi-hop broadcast of Emergency messages in C-V2X Mode 4 on the performance of Beacon messages and propose collision probability models for Beacon messages and Emergency messages. The non-periodicity nature and lower broadcast latency requirement of the multi-hop Emergency messages may cause resource allocation conflicts in the resource selection process of C-V2X Mode 4, thus result in forwarding collision of Emergency messages and collision of subsequent Beacon messages. Therefore, we propose several multi-hop broadcast schemes for Emergency messages to reduce the collision probability by assigning independent resource grants for Emergency messages and adjusting the number of forwarding nodes. The performance of Beacon messages and Emergency messages of several different forwarding schemes proposed are simulated. The simulation results show that the proposed broadcasting schemes significantly improve the performance of Beacon messages and Emergency messages.
doi_str_mv 10.1109/JSEN.2022.3175158
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subjects C-V2X Mode 4
collision probability models
Emergency messages
Internet of Vehicles
Long Term Evolution
multi-hop broadcast
Protocols
Rail to rail inputs
Resource management
Sensors
Spread spectrum communication
title Analysis and Optimization of Multi-hop Broadcast Communication in the Internet of Vehicles Based on C-V2X Mode 4
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