Abstract
In this letter, we propose a density-aware rate adaptation (DARA) protocol to ensure reliable vehicle safety communication in a highway broadcast environment. DARA significantly improves system reliability by addressing the challenges of estimating channel conditions caused by various dynamics due to factors, including channel fading, interference, and varying traffic density. One salient advantage of DARA is that it can estimate the average packet loss rate for each sender locally without the use of any control frames (such as ACK and RTS/CTS). DARA can also distinguish the interference losses from the fading losses based on an empirical model. It adjusts the bit rate only in response to the packet loss due to channel fading and the change of the traffic density. Simulation results demonstrate that DARA can provide reliability guarantees for vehicle safety communication.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
