The scope of this standard is the specification of medium access control (MAC) sublayer functions and services that support multi-channel wireless connectivity between IEEE 802.11 Wireless Access in Vehicular Environments (WAVE) devices. Purpose The purpose of this standard is to enable effective mechanisms that control the operation of upper layer data transfers across multiple channels@ without requiring knowledge of physical layer (PHY) parameters@ and describe the multi-channel operation channel routing and switching for different scenarios.