R-MAC: Risk-Aware Dynamic MAC Protocol for Vehicular Cooperative Collision Avoidance System | Zendy

Weijie Guo | Zendy; Liusheng Huang | Zendy; Long Chen | Zendy; Hongli Xu | Zendy; Chenglin Miao | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

R-MAC: Risk-Aware Dynamic MAC Protocol for Vehicular Cooperative Collision Avoidance System

Author(s) -

Weijie Guo,

Liusheng Huang,

Long Chen,

Hongli Xu,

Chenglin Miao

Publication year - 2013

Publication title -

international journal of distributed sensor networks

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.324

H-Index - 53

eISSN - 1550-1477

pISSN - 1550-1329

DOI - 10.1155/2013/686713

Subject(s) - computer science , beacon , computer network , network packet , protocol (science) , access control , time division multiple access , platoon , frame (networking) , transmission (telecommunications) , real time computing , control (management) , telecommunications , medicine , alternative medicine , pathology , artificial intelligence

The key for cooperative collision avoidance (CCA) systems is the real-time and reliable delivery of safety-related messages among vehicles, which include periodical beacons and risk-triggered warning messages. In this paper, we first design a risk-aware dynamic medium-access control (R-MAC) protocol tailored for vehicular CCA applications. In this protocol, each frame is divided into two parts: TDMA segment for transferring beacons and CSMA segment for delivering warning messages. Then, we propose a stochastic model to predict the average total number of potential collisions in a platoon of vehicles, which determines the size of CSMA segment in the R-MAC protocol meticulously. Monte Carlo simulations validate that our model is reliable and practical. The performance of the R-MAC protocol is verified through theoretical analysis and extensive simulations under different traffic scenes. Simulation results show that R-MAC outperforms the traditional IEEE 802.11p protocol in terms of packets delivery rate and transmission delay, as well as the Jain's fairness index of the medium access between beacons and warning messages. © 2013 Weijie Guo et al.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research