Uplink Transport Channels

Transport channels provide for information transfer between the physical layer and the medium access control (MAC) layer in the three layer structure illustrated in Figure 1.

Figure 1. Layers 

The following uplink transport channels are defined:

Uplink transport channels are mapped to uplink physical channels as shown in Figure 2.

Figure 2. Uplink Transport Channel Mapping

RACH

The random access channel processes incoming data as follows:

UL-SCH

The uplink shared channel processes the incoming data as follows: