Analytical Comparison Between IEEE 802.11p and IEEE 802.11bd Based on an Extended BianchiModel
Year: 2025
Type: report
Abstract: IEEE 802.11p has long been the baseline for vehicular communication (V2X) applications, while IEEE 802.11bd has emerged as its successor, promising higher reliability, throughput, and backward compatibility. In this paper, we compare the performance of both standards using an analytical model inspired by Bianchi's saturation throughput analysis. We propose a modification to the original Bianchi model to account for physical layer enhancements in IEEE 802.11bd by introducing a success probability even in the presence of collisions. Specifically, we incorporate a tunable parameter to model the impact of advanced features such as MIMO, higher-order modulation, and cooperative retransmission, which improve the likelihood of packet delivery despite contention. The modified model enables a more accurate analytical comparison between the two standards under saturated traffic conditions. Our analysis reveals the extent to which IEEE 802.11bd mitigates the negative impact of collisions and enhances throughput performance compared to its predecessor.
Source: HAL
Author: Muhlethaler, Paul
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7126004615