Modeling the Accuracy of Estimating a Neighbor’s Evolving Position in VANET

Applied Sciences

Eun-Kyu Lee¹  Jae-Han Lim² 

[1] Department of Information and Telecommunication Engineering, Incheon National University, Incheon 22012, Korea;Department of Software, Kwangwoon University, Seoul 01897, Korea;

关键词: analytic model;    estimation error;    neighbor’s evolving position;    mobility;    vehicular network;   

DOI  :  10.3390/app10196814

来源: DOAJ

【 摘 要 】

Accurate estimation of a neighbor’s evolving position is essential to enhancing safety in intelligent transport systems. A vehicle can estimate a neighbor’s evolving position via periodic beaconing wherein each vehicle periodically broadcasts a beacon including its own kinematic data (e.g., position, speed, and acceleration). Many researchers have proposed analytic models to describe periodic beaconing in vehicular ad-hoc networks (VANETs). However, those models have focused only on network performance, e.g., packet delivery ratio (PDR), or a delay, which fail to evaluate the accuracy of estimating a neighbor’s evolving position. In this paper, we present a new analytic model capable of providing an estimation error of a neighbor’s evolving position in VANET to assess the accuracy of the estimation. This model relies on a vehicle system using periodic beaconing and a constant speed and position estimator (CSPE) to estimate a neighbor’s evolving position. To derive an estimation error, we first calculate the estimation error using a simple equation, which is associated with a probability of successful reception. Then, we derive the probability of successful reception that is applied onto the error model. To our knowledge, this is the first paper to establish a mathematical model to assess the accuracy of estimating a neighbor’s evolving position. To validate the proposed model, we compared the numerical results of the model with those of the NS-2 simulation. We observed that numerical results of the proposed model were located within the 95% confidential intervals of simulations results.

【 授权许可】

Unknown