Project: Resolving Hidden-Node Problems in Cellular V2X Networks

Cellular Vehicle-to-Everything (C-V2X) communications allow information from the in-vehicle sensors, road-side units and backbone network to be transmitted via low-latency high-reliability links, paving the way to safer driving, better traffic management and novel ITS applications. However, signal blockage by big buildings and shadowing by big vehicles introduce hidden-node problems in C-V2X systems, and degrades the effectiveness of V2X applications. We design a smart message relaying protocol that makes use of a relay or gateway installed on an infrastructure or a selected vehicle to re-transmit the blocked signals to the hidden nodes using 2-hop communication, thereby restoring full V2X coverage without incurring excessive network loading.

Resolving Hidden-Node Problems in Cellular V2X Networks

Reference:

  • NGUYEN Thanh Hieu; Md NOOR-A-RAHIM; GUAN Yong Liang; LI Hong, ”Message Relaying In Vehicle-To-Vehicle Communication System”, US patent US10701534B2. Grant Date: 2020-06-30.
  • M. Noor-A-Rahim , **G. G. M. N. Ali , Y. L. Guan, B. Ayalew, P. H. J. Chong and D. Pesch, "Broadcast Performance Analysis and Improvements of the LTE-V2V Autonomous Mode at Road Intersection," IEEE Transactions on Vehicular Technology, vol. 68, no. 10, pp. 9359-9369, Oct. 2019.

 

For more information, you may contact our Professor Guan Yong Liang.