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DOI: 10.1145/2482967.2482968

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

Tielert, T.; Jiang, D.; Hartenstein, H.; Delgrossi, L.

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 ... mehr

Zugehörige Institution(en) am KIT Institut für Telematik (TM)
Steinbuch Centre for Computing (SCC)
Publikationstyp Proceedingsbeitrag
Jahr 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 The Association for Computing Machinery, New York
Seiten 51-60
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