Cellular-based vehicle to pedestrian (V2P) adaptive communication for collision avoidance

Abstract

Road safety is one of the most important applications of vehicular networks. However, improving pedestrian safety via vehicle-to-pedestrian (V2P) wireless communication has not been extensively addressed. In this paper, our vision is to propose a method which enables development of V2P road safety applications via wireless communication and only utilizing the existing infrastructure and devices. As pedestrians' smartphones do not support the IEEE 802.11p amendment which is customized for vehicular networking, we have initiated an approach that utilizes cellular technologies. Study shows potential of utilizing 3G and LTE for highly mobile entities of vehicular network applications. In addition, some vehicles are already equipped with cellular connectivity but otherwise the driver's smartphone is used as an alternative. However, smartphone limited battery life is a bottleneck in realization of such pedestrian safety system. To tackle the energy limitation in smartphones, we employ an adaptive multi-level approach which operates in an energy-saving mode in risk-free situations but switches to normal mode as it detects a risky situation. Based on our evaluation and analysis, this adaptive approach considerably saves electrical energy and thus makes the cellular-based road-safety system practical.

A Cooperative Car-Following/Emergency Braking System With Prediction-Based Pedestrian Avoidance Capabilities

“…V2P was recently introduced to improve pedestrian safety by relying on either centralized [24] or distributed communication protocols [25]. Similar to our work [26], in this work pedestrians carry a communication system sending Pedestrianto-Vehicle (P2V) messages with geographic location, speed, walking direction and user type.…”

Energy-efficient Position Tracking via Trajectory Modeling

“…Studies show that position tracking is critical in some situation such as vehicle to pedestrian collision avoidance [8].…”

Cooperative awareness using roadside unit networks in mixed traffic

“…Sensory Observation Message (SOM) has been proposed as a method for sharing infrastructure sensor information primarily for the purpose of defending vulnerable road users [21]. [22] V2X-based cooperative protection systemfor vulnerable road users and its impact on traffic Cloud-based cooperative awareness between vehicles and pedestrians was proposed in [23]. Under this framework, pedestrians send their positions to the cloud regularly from their smartphones so that the cloud can alert vehicles to approaching pedestrians.…”