1.4 PRIME PAL Module

The PRIME Physical Abstraction Layer (PAL) provides an interface between the PHY layer and the MAC layer, so that the MAC layer is independent from the PHY layer and the underlying modem.

The PAL is based on the PHY primitives for data and control planes described in the PRIME specification, although the current implementation offers enhanced versions of some of them to take a full advantage of the features available in the PHY layer. These features improve the operation of the MAC layer.

Taking into account that there could be several PHY layers, the PAL contains submodules, each one of them providing a link between the PAL and the corresponding PHY layer. The PAL submodule is selected by means of the channel indicated by the MAC layer.