| | 17 | In general, it is impossible to specify in full generality the information that must be shared between any possible MAC layer with any possible PHY. For example, novel cross-layer designs will require much more sharing of state information than present in the [wiki:OFDMReferenceDesign reference design]. However, a large class of PHY-MAC interfaces will share certain behaviors like triggers to begin transmission and header copy commands. With that in mind, we have created [wiki:WARPPHY WARPPHY] as an additional layer of abstraction to the drivers of our custom peripherals. New PHYs need to recreate this to provide a common interface to existing MAC layers. |
