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High throughput performance of the Wireless Access in Vehicular Environment (WAVE) system can provide more capacity for future high density traffic, which is little considered in the ongoing IEEE 802.11p/P1609.4 defined WAVE Medium Access Control (MAC) protocol. To achieve this goal, we propose a novel multi-channel MAC protocol that can use a dynamic time boundary instead of fixed boundary to separate...
In this paper, we propose an algorithm for joint adaptation of transmission power and contention window to improve the performance of vehicular network in a cross layer approach. The high mobility of vehicles in vehicular communication results in the change in topology of the Vehicular Ad-hoc Network (VANET) dynamically, and the communication link between two vehicles might remain active only for...
The FCC has set apart a frequency band with the specific goal of improving safety and efficiency of the transportation system. Its purpose is to provide wireless communications between stations on the roadside and mobile radio units located on board of vehicles. The resulting technology is known as WAVE and is currently under development as draft standard IEEE 802.1 lp. The most time- critical messages,...
This paper focuses on vehicle to roadside unit (V2R) communications in vehicle networks based on IEEE 802.11 DCF MAC protocol. The main challenge is due to the short residence time of the moving vehicle within the coverage of each stationary RSU. As a result, the contentions among vehicles during this short period of time dramatically degrade the system performance. In this paper, we propose a new...
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