MQ-Mapcast: A Map-Aware Protocol for Optimized Forwarding in Urban VANETs

• Published in: 2012 International Conference on Connected Vehicles and Expo (ICCVE) pp. 91 - 98
• Main Authors: Scopigno, R., Cozzetti, H. A., Brofferio, A., Casetti, C., Chiasserini, C. F.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-12-2012
• Subjects: broadcast storms; Geo-broadcasting; map-driven forwarding; vehicular ad-hoc network
• ISBN: 9781467347051; 1467347051
• ISSN: 2378-1289
• DOI: 10.1109/ICCVE.2012.24

Vehicular Adhoc Networks will significantly rely on message forwarding based on position. This requires scalable, efficient and effective solutions, so as to support a large number of nodes and timely deliver safety-warning messages. This paper presents and studies a protocol (MQ-Mapcast) for message forwarding, which leverages both node position and urban topological information so as to prevent potential broadcast storms. Based on a previous version of the protocol, MQ-Mapcast can support multiple concurrent traffic flows and background traffic, by means of a flexible queuing architecture. Simulations, in a realistic urban environment and in presence of urban obstructions, show that our scheme significantly outperforms classic geocasting of safety messages, in terms of packet delivery ratio, latency and channel usage.