Investigating the Impact of TXOP Allocation in IEEE 802.11bd for NGV Devices

This study investigates the performance of IEEE 802.11bd channel bonding, both with and without fallback, when Next-Generation Vehicle (NGV) devices request and send multiple packets using Transmission Opportunity (TXOP) allocation in a mixed environment with legacy, non-NGV devices that do not support TXOP. To this end, we use probabilistic modeling and Markov chain analysis. Our results show that the effectiveness of TXOP depends on the priority level assigned to each NGV traffic class. Overall, low-priority traffic classes experience marginal improvements, while higher-priority classes benefit moderately from the use of TXOP.