Joint Fuzzy Relays and Network-Coding-Based Forwarding for Multihop Broadcasting in VANETs

作     者：Wu, Celimuge Ohzahata, Satoshi Ji, Yusheng Kato, Toshihiko 

作者机构：Univ Electrocommun Grad Sch Informat Syst Tokyo 1828585 Japan Natl Inst Informat Informat Syst Architecture Res Div Tokyo 1018430 Japan 

出 版 物：《IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS》 (IEEE Trans. Intell. Transp. Syst.)

年 卷 期：2015年第16卷第3期

页      面：1415-1427页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 0814[工学-土木工程] 0823[工学-交通运输工程] 

主　　题：Broadcast protocols fuzzy logic network coding vehicular ad hoc networks 

摘      要：In vehicular ad hoc networks (VANETs), due to the limited radio propagation range of wireless devices, many safety applications require a multihop broadcast protocol to disseminate traffic warning information. However, providing an efficient multihop forwarding of broadcast messages has been a challenging problem due to vehicle movement, limited wireless resources, and unstable signal strength. In this paper we propose a broadcast protocol that can provide a low message overhead and a high packet dissemination ratio. The proposed scheme uses a fuzzy logic algorithm to choose the next hop relay nodes and uses network coding to improve the packet dissemination ratio without increasing the message overhead. By using the fuzzy logic algorithm, the protocol can choose the best relay node by taking intervehicle distance, vehicle velocity, and link quality into account. Network coding is used to improve the packet reception ratio by utilizing the broadcast nature of wireless channels. We show the effectiveness of the proposed scheme by using both theoretical analysis and computer simulations.