A Novel Delay- and Reliability- Aware Inter-Vehicle Routing Protocol

Abstract

Intelligent transportation systems could improve transportation safety, driving assistance and traffic management system. Vehicular Ad hoc Network (VANET) is an emerging field of technology, embedding wireless communication networks into vehicles to achieve intelligent transportation systems. The development of such systems pose many unique challenges like designing routing protocols that not only forward packets with good end to end delay but also take into consideration the reliability and progress in data packets forwarding. In this article, we begin by presenting a review of recent unicast, geocast and broadcast routing protocols for message transmission. We then outline a novel Delay and Reliability aware Routing (DR 2 )protocol that addresses these challenges (forwarding packets with low latency, high reliability and fast progress toward destination). Furthermore, our DR 2 protocol uses cross layer communication between MAC (Medium Access Control) and network layer. That is, the MAC layer observes the Signal to Noise (SNR), delay and velocity vector difference metrics for all paths of neighboring nodes, network layer then could select the best preferable path based on fuzzy inference system. We also used H∞ technique to optimize the membership functions and then tune it with rapid changing topology of VANET. To achieve a fair comparison with other routing protocols, we have implemented the proposed DR 2 protocol in Network Simulator 2 (NS 2). The preliminary results show that the proposed DR 2 protocol is able to improve end-to-end delay in sparse traffic conditions and packet delivery ratio in error prone urban vehicular scenarios.

A Cooperative Watchdog System to Detect Misbehavior Nodes in Vehicular Delay-Tolerant Networks

“…In the last years, communications among vehicle have attracted significant attention from the automotive and research community [5][6][7][8][9][10][11][12]. For this reason, cooperation among nodes became an important concern, and several approaches were proposed to incentive them to cooperate.…”

Routing Protocols in Vehicular Ad hoc Networks: Survey and Research Challenges

“…In another attempt, in [72] we developed a novel De-lay and Reliability aware geographical Routing (DR 2 ) protocol that selects a low latency, high reliability and shortest path toward a destination. The DR 2 utilized cross layer communication between Medium Access Control (MAC) and network layer.…”

Advances on Network Protocols and Algorithms for Vehicular Ad Hoc Networks

“…This special issue aimed to theme innovative research achievements in the field of vehicular networks and communications. We were seeking original, innovative and unpublished papers related to radio obstacle modeling in urban vehicular environments [2], VANET routing protocols [3] (such as efficient geographical routing [4], delay-aware routing protocols [5], delay tolerant routing protocols [6], routing protocol using movement trends [7], etc. ), adaptive beaconing protocols [8], mobility management and handovers [9], network size [10], transmission power adaptation systems [11], Quality of Service [12], security and privacy issues [13], efficient packet forwarding optimization [14], modeling and simulation [15], etc.…”