For instance,to ensure reliability of the wireless link,MAC and PHY work together to determine if a clear path exists before they start a transmission.
Information processing systems--Fibre distributed data interface (FDDI)--Part 1: Token ring physical layer protocol (PHY)
" Process data highway, type C (PROWAY C), for distributed process control systems--Specification of the single channel phase-continuous-FKS physical (PHY) layer and its interface to the medium"
GB/T9469.8-1988分散型過程控制系統用工業過程數據公路單信道相位連續FSK物理(PHY)層及其與媒體接口的規範
利用物理層的信道狀態信息,該算法將物理層(PHY)的子載波分配同數據鏈路層(DLL)的數據包業務調度結合起來。