| Abstract
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<p>Future active-safety applications … <p>Future active-safety applications in vehicular networks rely heavily on the support for real-time inter-vehicle communication. The Medium Access Control (MAC) mechanism proposed for the upcoming IEEE 802.11p standard intended for Intelligent Transport Systems (ITS) applications does not offer deterministic real-time support, i.e., the channel access delay is not upper bounded. We therefore propose a vehicle-to-infrastructure (V2I) communication solution extending IEEE 802.11p, by introducing a collision-free MAC phase with an enhanced prioritization mechanism based on vehicle positions and the overall road traffic density. A road side unit using a polling mechanism is then able to provide real-time support such that it can guarantee collision-free channel access within its transmission range. Part of the bandwidth remains unchanged such that best-effort services like ongoing vehicle-to-vehicle (V2V) applications may continue. Our solution guarantees that all communication deadlines of the V2I applications are met, while minimizing the required length of the collision-free phase. This in turn maximizes the amount of bandwidth available for best-effort services and ongoing V2V applications. The position-based prioritization mechanism further improves the throughput of both real-time and best-effort data traffic by focusing the communication resources to the most hazardous areas. The concept is evaluated analytically based on a realistic task set from a V2I merge assistance scenario.</p>a V2I merge assistance scenario.</p>
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| Author
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Annette Böhm +
, Magnus Jonsson +
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| Conference
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IEEE International Conference on Communications Workshops, 14 - 18 June 2009; Dresden, Germany
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| DOI
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http://dx.doi.org/10.1109/ICCW.2009.5208065 +
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| Diva
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http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:239960
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| EndPage
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210 +
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| HostPublication
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IEEE International Conference on Communications Workshops, 2009. ICC Workshops 2009 +
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| PublicationType
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Conference Paper +
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| Publisher
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IEEE Press +
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| StartPage
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205 +
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| Title
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Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
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| Year
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2009 +
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| Has queryThis property is a special property in this wiki.
|
Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
, Publications:Position-based data traffic prioritization in safety-critical, real-time vehicle-to-infrastructure communication +
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| Categories |
Publication +
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| Modification dateThis property is a special property in this wiki.
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26 June 2014 03:42:38 +
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