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Author(s):
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Ching-Ling Huang, University of California at Berkeley ; Yaser Pourmohammadi-Fallah, University of California at Berkeley; Raja Sengupta, University of California at Berkeley
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Abstract:
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In vehicular ad-hoc networks, status update messages are used to disseminate vehicle state information s.t. each vehicle can track movements of its neighboring ones. In this paper, we focus on the aggregated power level from this kind of active safety messages and its impact on DSRC channel quality. With macroscopic model and LWR (Lighthill-Whitham-Richards) PDE, we show how the probability distribution of aggregated power level propagates along time and space. Based on our analysis, several rate-power control ideas for status update messages are discussed. In addition, microscopic traffic/network simulation results show that our proposed rate-power control algorithm can reduce channel interference and thus enhance tracking accuracy.
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