NDLI: Analysis and design of effective and low-overhead transmission power control for VANETs

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Analysis and design of effective and low-overhead transmission power control for VANETs

Content Provider	ACM Digital Library
Author	Killat, Moritz Härri, Jérôme Hartenstein, Hannes Mittag, Jens Schmidt-Eisenlohr, Felix
Abstract	The control of vehicles' radio communication behavior to deal with the constrained available wireless bandwidth has been identified as a key challenge in VANETs. As an element of congestion control, this paper addresses distributed transmission power control as a means to control the impact of periodic transmissions (`beacons') on the overall channel load. By also considering recently discussed fairness issues, we first examine the trade-off between the effectiveness of controlling the channel load on the one hand and the corresponding costs in terms of the required packet overhead on the other hand. We provide insights to the underlying estimation problems and present a sensitivity analysis with respect to non-homogeneous vehicular traffic densities and non-perfect channel conditions. Second, based on the analysis, we propose a segment-based power adjustment approach based on a distributed vehicle density estimation. The approach put forward in this paper reduces overhead by two orders of magnitude compared to previous approaches while still being effective in controlling the channel load.
Starting Page	39
Ending Page	48
Page Count	10
File Format	PDF
ISBN	9781605581910
DOI	10.1145/1410043.1410051
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-09-15
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Transmission power control Analysis Vanets Wireless vehicular communication Congestion control
Content Type	Text
Resource Type	Article

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