A Vehicle Mobile Internet of Things Coverage Enhancement Algorithm Based on Communication Duration Probability Analysis

Zhiping Wan,Shaojiang Liu,Zhihong Pan,Zemin Qiu,Feng Wang,Zhiming Xu,Weichuan Ni

doi:10.1109/access.2019.2929273

Abstract

Vehicle mobile Internet of Things uses sensor technology, mobile Internet technology, and intelligent computing technology to effectively monitor and provide comprehensive services for vehicle operation status. It is an important part of building a smart city, making urban transportation more efficient, environmentally friendly, intelligent, and safety. In the vehicle mobile Internet of Things, when in-vehicle sensors are in communication with each other, they are often affected by factors, such as network mobility, transmission range, and signal interference. Therefore, in order to ensure the continuity of communication between nodes and improve the quality of network communication, this paper proposes a vehicle mobile Internet of Things coverage enhancement algorithm (PANM). First, we derive the probabilistic analysis model of communication duration by analyzing the functional relationship of vehicle initial velocity, acceleration, spacing distance, and communication duration. Then, under the premise of ensuring the communication duration, in order to improve the coverage of the vehicle mobile Internet of Things, the network overlap ratio is introduced in the probability analysis model. Finally, we improve the network coverage performance of omnidirectional radiation and fan-shaped radiation communication models of vehicle mobile Internet of Things by limiting the overlap ratio threshold. The experimental simulation results indicate that the PANM algorithm can reduce the packet loss rate of the vehicle network and have a shorter communication delay.

Highlights

Cyber Physics System (CPS) is a multi-dimensional complex system integrating computing, network and physical environment
VMIT (Vehicle Mobile Internet of Things) is an overlay network established by a vehicle equipped with a remote communication device or a communication device with a certain sensing range [1], [2]
In order to increase the coverage rate of vehicle mobile internet of things, we introduce the concept of vehicle network coverage overlap ratio and analyze the coverage overlap ratio of vehicle mobile internet of things under omnidirectional radiation and fan-shaped radiation communication models respectively

Summary

INTRODUCTION

Cyber Physics System (CPS) is a multi-dimensional complex system integrating computing, network and physical environment. They take into account the high mobility of the vehicle mobile internet of things nodes, making it difficult for cluster heads to maintain normal communication with mobile nodes within their communication range This algorithm uses the base station deployed on the roadside as the agent unit to coordinate the inter-area vehicle intercommunication through the density and average speed information of the vehicle. The third section introduces the PANM algorithm, which proposes a communication duration function equation to analyzes the moving speed and acceleration of the communication vehicle without interruption of the communication link, and proposes the network coverage enhancement method under the omnidirectional radiation model and the fan radiation model is proposed.

VEHICLE NETWORK COMMUNICATION MODEL

NETWORK COVERAGE ENHANCEMENT

CONCLUSION