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http://dx.doi.org/10.7840/KICS.2012.37.6C.483

An Analysis for the Efficient Dissemination of Beacon Messages in Vehicle-to-Vehicle (V2V) Communications  

Nguyen, Hoa-Hung (부산대학교 물류IT학과)
Bhawiyuga, Adhitya (부산대학교 물류IT학과)
Jeong, Han-You (부산대학교 차세대물류IT기술연구사업단)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.6C, 2012 , pp. 483-491 More about this Journal
Abstract
In vehicle-to-vehicle (V2V) communications, each vehicle should periodically disseminate a beacon message including the kinematics information, such as position, speed, steering, etc., so that a neighbor vehicle can better perceive and predict the movement of the vehicle. However, a simple broadcasting of such messages may lead to a low reception probability as well as an excessive delay. In this paper, we attempt to analyze the impact of the following key parameters of the beacon dissemination on the performance of vehicular networks: beacon period, carrier-sensing range, and contention window (CW) size. We first derive a beacon period which is inversely proportional to the vehicle speed. Next, we mathematically formulate the maximum beacon load to demonstrate the necessity of the transmit power control. We finally present an approximate closed-form solution of the optimal CW size that leads to the maximum throughput of beacon messages in vehicular networks.
Keywords
자동차 간 통신;비컨 메시지 방송;비컨주기;반송파감지거리;IEEE 802.11 DCF 경쟁구간크기;
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