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Joint Power/Rate Congestion Control Optimizing Packet Reception in Vehicle Safety Communications

Tielert, T. 1; Jiang, D.; Hartenstein, H. 1; Delgrossi, L.
1 Institut für Telematik (TM), Karlsruher Institut für Technologie (KIT)


In Vehicle Safety Communications (VSC) based on IEEE 802.11p, vehicles establish a mutual awareness of their presence by periodically broadcasting status messages, aka beacons. If vehicle density is high and beaconing is not regulated, the channel can become congested, impairing reception performance and safety benefit. As a countermeasure, a number of congestion control approaches have been suggested, adapting transmit (Tx) power, beacon generation rate (Tx rate), or both. However, in general these approaches did not show what the optimal outcome for congestion control would be and how and why their solution would lead to the desired result. In this work, we analyze answers to the first question and provide a methodology for the second. We systematically derive a joint power/rate control strategy for VSC which optimizes reception performance for a targeted sender-receiver distance. We start by laying out why we consider average (or percentile of) packet Inter-Reception Time (IRT) at the targeted awareness distance to be a suitable metric for our purpose. Then, we analyze a wide range of Tx parameters to identify which combinations optimize reception in a homogeneous scenario. ... mehr

DOI: 10.1145/2482967.2482968
Zitationen: 79
Zitationen: 74
Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Scientific Computing Center (SCC)
Universität Karlsruhe (TH) – Zentrale Einrichtungen (Zentrale Einrichtungen)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2013
Sprache Englisch
Identifikator ISBN: 978-1-4503-2073-3
KITopen-ID: 1000036018
Erschienen in Proceeding VANET '13 Proceeding of the tenth ACM international workshop on Vehicular inter-networking, systems, and applications, Taipei, Taiwan — June 25 - 25, 2013
Verlag Association for Computing Machinery (ACM)
Seiten 51-60
Nachgewiesen in Scopus
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