Section: 4.3.2 Services expected from physical layer
Content: The physical layer provides the following services to MAC: - data transfer services; - signalling of HARQ feedback; - signalling of Scheduling Request; - measurements (e.g. Channel Quality Indication (CQI)). The access to the data transfer services is through the use of transport channels. The characteristics of a transport channel are defined by its transport format (or format set), specifying the physical layer processing to be applied to the transport channel in question, such as channel coding and interleaving, and any service-specific rate matching as needed.