Implementing the Uplink Access in IEEE 802.11bd

Modern Vehicle-To-Everything (V2X) communications pose stringent requirements on various Quality of Service (QoS) parameters, such as high data rates, low latency, and high reliability, which are crucial for enhancing road safety and vehicular communication efficiency. Existing standards like IEEE 802.11p and LTE-V2X often fall short in meeting these demands. To address these limitations, IEEE 802.11bd introduces advanced techniques, including channel bonding with and without fallback, and traffic prioritization through Enhanced Distributed Channel Access (EDCA). In this paper, we present the first comprehensive analytical model of IEEE 802.11bd uplink operation that includes these features. Our model evaluates the performance enhancements achieved, demonstrating the benefits of IEEE 802.11bd in terms of improved data rates and reduced latency while ensuring compatibility with legacy devices. This work provides valuable insights for the design and implementation of next-generation V2X communication systems.