  Nowadays, Vehicle-To-Everything (V2X) networks are actively developing. Most
of the already deployed V2X networks are based on the IEEE 802.11p standard.
However, these networks can provide only basic V2X applications and will
unlikely fulfill stringent requirements of modern V2X applications. Thus, the
IEEE has launched a new IEEE 802.11bd standard. A significant novelty of this
standard is channel bonding. IEEE 802.11bd describes two channel bonding
techniques, which differ from the legacy one used in modern Wi-Fi networks. Our
study performs a comparative analysis of the various channel bonding techniques
and a single-channel access method from IEEE 802.11p via simulation. We compare
them under different contention window sizes and demonstrate that the legacy
technique provides the best quality of service in terms of frame transmission
delays and packet loss ratio. Moreover, we have found a quasi-optimal
contention window size for the legacy technique.
