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A spatial QoS requirements specification for V2V applications
Örebro University, School of Science and Technology. (Centre for Research on Embedded Systems (CERES))
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE). (Halmstad Embedded and Intelligent Systems Research (EIS), Halmstad högskola; Centre for Research on Embedded Systems (CERES), Örebro universitet)
2010 (English)In: IEEE Intelligent Vehicles Symposium (IV), 2010, Piscataway, NJ.: IEEE conference proceedings, 2010, 548-553 p.Conference paper, Published paper (Refereed)
Abstract [en]

Vehicle-to-vehicle wireless communication is a key component of tomorrow’s cooperative safety applications. However, the wireless link is susceptible to effects such as shadowing which can cause communication failures. Such failures may in turn lead to hazardous traffic situations when safety applications cease to function. By monitoring communication QoS and adapting to changes, effects of link failure may be mitigated, however this requires a specification of the application QoS requirements. In this paper we combine the T-Window reliability QoS metric with a spatial component, allowing us to capture the dependencies between VANET QoS requirements and road geometry. The proposed representation can be used both at design-time, to characterize applications, and at run-time for QoS monitoring and adaptation purposes.

Place, publisher, year, edition, pages
Piscataway, NJ.: IEEE conference proceedings, 2010. 548-553 p.
Series
IEEE Intelligent Vehicles Symposium, ISSN 1931-0587 ; 2010
Keyword [en]
mobile radio, quality of service, road safety, telecommunication links, vehicles
National Category
Computer Science
Research subject
Computer and Systems Science
Identifiers
URN: urn:nbn:se:oru:diva-21429DOI: 10.1109/IVS.2010.5548092Scopus ID: 2-s2.0-77956496105ISBN: 978-1-4244-7866-8 (print)OAI: oai:DiVA.org:oru-21429DiVA: diva2:487301
Conference
IEEE Intelligent Vehicles Symposium University of California, San Diego, CA, USA June 21-24, 2010
Available from: 2012-01-31 Created: 2012-01-31 Last updated: 2017-10-18Bibliographically approved
In thesis
1. Situation-aware vehicles: supporting the next generation of cooperative traffic systems
Open this publication in new window or tab >>Situation-aware vehicles: supporting the next generation of cooperative traffic systems
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Wireless communication between road vehicles enables a range of cooperative traffic applications including safety, efficiency and comfort functions. A common characteristic of the envisioned applications is that they act on environmental information to intepret traffic situations in order to provide the driver with warnings or recommendations. In this thesis we explore both the detection of hazardous traffic situations in order to provide driver warnings but also the detection of situations in which the cooperative system itself may fail.

The first theme of this thesis investigates how traffic safety functions that incorporate cooperatively exchanged information can be constructed so that they become resilient to failures in wireless communication. Inspired by how human drivers coordinate with limited information exchange, the use of pre-defined models of normative driver behavior is investigated by successfully predicting driver turning intent at an intersection using mobility traces extracted from video recordings. Furthermore a hazardous driving warning criterion based on model switching behavior is proposed and evaluated through test drives. Maneuvers classified as hazardous in the tests, such as swerving between lanes and not braking for traffic lights, are shown to be correctly detected using the criterion. Whereas robust coordination mechanisms may mask communication faults to some degree, severe degradations in communication are still expected to occur in non-line-of-sight conditions when using wireless communication at 5.9 GHz.

The second theme of the thesis explores how communication performance can be efficiently logged, gathered and aggregated into maps of communication quality. Both in-network aggregation as well as centralized aggregation is investigated using vehicles in the network as measurement probes and the feasibility of the approach in terms of bandwidth and storage requirements is shown analytically. In conjunction with a proposed communication quality requirements format, tailored specifically for vehicle-to-vehicle applications, such maps can be used to enable application-level adaptation in response to situations where quality requirements likely cannot be met.

Place, publisher, year, edition, pages
Örebro: Örebro universitet, 2012. 47 p.
Series
Örebro Studies in Technology, ISSN 1650-8580 ; 52
National Category
Natural Sciences Computer Science
Research subject
Computer Science
Identifiers
urn:nbn:se:oru:diva-21338 (URN)978-91-7668-846-5 (ISBN)
Public defence
2012-02-12, Högskolan i Halmstad, Hörsal Wigfors, Halmstad, 13:15
Opponent
Supervisors
Available from: 2012-01-30 Created: 2012-01-26 Last updated: 2017-10-17Bibliographically approved

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