This TS specifies the E-UTRA MAC protocol.
E-UTRA defines two MAC entities; one in the UE and one in the E-UTRAN. These MAC entities handle the following transport channels:
Broadcast Channel (BCH);
Downlink Shared Channel(s) (DL-SCH);
Paging Channel (PCH);
Uplink Shared Channel(s) (UL-SCH);
Random Access Channel(s) (RACH);
Multicast Channel(s) (MCH).
The exact functions performed by the MAC entities are different in the UE from those performed in the E-UTRAN. The Relay Node includes both MAC entities; one for communication with UEs and one for communication with the E-UTRAN.
to see the ToC for advanced Rel-14 Word version