In this paper we focus on transmission power control strategies to control the beaconing load on the channel. The authors fix packet size and transmission rate and build our investigation on the channel load metric to quantify channel conditions. We present the following contributions, as analysing the minimum 'required knowledge' of positional information on neighbouring nodes that is necessary to guarantee a preconfigured maximum beaconing load in the network; analyzing how well the beaconing load can be controlled when the distributed control is challenged by realistic (Nakagami-m) channel models as well as by non-homogeneous vehicular traffic densities; proposing an effective beacon power control approach that only requires a negligible amount of additional communication overhead. The remaining part of this paper is structured as follows. Section 2 presents related work on congestion control and introduces essential notions. In Section 3 the impact of information accuracy on controlling the beaconing load is studied analytically and via simulation. Based on the drawn conclusions Section 4 presents a power control approach that effectively controls the channel load with a negligible amount of overhead. In Section 5 the impact and benefits of the solution will be presented. The authors conclude the work in Section 6.
Analysis and design of effective and low-overhead transmission power control for VANETs
Untersuchung und Entwurf der Steuerung einer wirksamen und geringen Overhead-Leistungsübertragung für VANETs
2008
10 Seiten, 11 Bilder, 2 Tabellen, 29 Quellen
Aufsatz (Konferenz)
Englisch
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