Advanced 5.9GHz Interference Resiliency for Connected Vehicle Equipment

Details

• Creators:
  Kihei, Billy ; Grow, James ; Oglesby, Nakira ; Prescott, Mackenzie ; Hatcher, Grayson ; Tello, Marco ; Amoah, Sam ; Murphy, Khason ; Walker, William P. ; Iwejuo, Anthony
• Corporate Creators:
  Kennesaw State University
• Corporate Contributors:
  Georgia. Dept. of Transportation. Office of Performance-Based Management and Research ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Connected Vehicles Data Quality Dedicated Short Range Communications Intelligent Transportation Systems Interference Mobile Communication Systems Radio Frequency Interference U-NII-4 Wireless Communication Systems Wireless Interference
• Publication/ Report Number:
  FHWA-GA-25-2316 ; 23-16
• Resource Type:
  Tech Report
• Geographical Coverage:
  Georgia ; United States
• Edition:
  Final Report (March 2024 – March 2025)
• Corporate Publisher:
  Georgia. Department of Transportation. Office of Performance-Based Management & Research
• Abstract:
  In this work the research team reports on the effectiveness of various techniques to mitigate Wi-Fi 5 interference on Vehicle-to-Everything communications and provide a means to reliably detect Wi-Fi 5 interference. Following previous work conducted in RP 22-18, the research team performed three research investigations in this new work. The first investigation discovered the minimum gaud band size needed between aged low-cost real-world Wi-Fi 5 devices is 15MHz. This results in a recommendation to set policies for Wi-Fi 5 devices near connected vehicle roadside units. The second investigation discovered a passive in-line radio frequency hardware configuration to reduce the effect of Wi-Fi 5 interference, while not degrading the performance of Vehicle-to-Everything communications. The results provide a recommendation including a prototype in-line treatment that can work with the existing roadside unit configurations and the roadside unit stock 5.9GHz antennas. The third investigation discovered a method to utilize software defined radio technology to detect and measure the amount of Wi-Fi 5 interference near a roadside unit. This resulted in an interference detection kit that a technician or cognizant connected vehicle engineer can utilize to perform a war drive through roadside unit installation locations in order to detect and measure the amount of Wi-Fi 5 interference without hiring a third party.
• Format:
  PDF
• Funding:
  PI#0019918
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:f4a21487fc888661450127c8c30b377d4bbd178201e49e729d563302a0b73f33caa4a1de8cf00b5bbd779db6e46099763d6fdcde8e59cc494ee62ad892181751
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/80401/dot_80401_DS1.pdf
• File Type:
  [PDF - 3.04 MB ]