Quality-aware broadcasting strategies for position estimation in VANETs

Federico Mason, Marco Giordani, Federico Chiariotti, Andrea Zanella, Michele Zorzi

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)


The dissemination of vehicle position data all over the network is a fundamental task in Vehicular Ad Hoc Network (VANET) operations, as applications often need to know the position of other vehicles over a large area. In such cases, inter-vehicular communications should be exploited to satisfy application requirements, although congestion control mechanisms are required to minimize the packet collision probability. In this work, we face the issue of achieving accurate vehicle position estimation and prediction in a VANET scenario. State of the art solutions to the problem try to broadcast the positioning information periodically, so that vehicles can ensure that the information their neighbors have about them is never older than the inter-transmission period. However, the rate of decay of the information is not deterministic in complex urban scenarios: the movements and maneuvers of vehicles can often be erratic and unpredictable, making old positioning information inaccurate or downright misleading. To address this problem, we propose to use the Quality of Information (QoI) as the decision factor for broadcasting. We implement a threshold-based strategy to distribute position information whenever the positioning error passes a reference value, thereby shifting the objective of the network to limiting the actual positioning error and guaranteeing quality across the VANET. The threshold-based strategy can reduce the network load by avoiding the transmission of redundant messages, as well as improving the overall positioning accuracy by more than 20% in realistic urban scenarios.

Original languageEnglish
Title of host publicationEuropean Wireless 2019 Conference, EW 2019
Number of pages8
PublisherVDE Verlag GMBH
Publication date2019
ISBN (Electronic)9783800749492
Publication statusPublished - 2019
Externally publishedYes
Event25th European Wireless Conference 2019: Wireless Futures in the Era of Network Programmability, EW 2019 - Aarhus, Denmark
Duration: 2 May 20194 May 2019


Conference25th European Wireless Conference 2019: Wireless Futures in the Era of Network Programmability, EW 2019
SponsorAarhus University, INCOM
SeriesEuropean Wireless 2019 Conference, EW 2019

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