Basic Function of Uplink & Downlink Transport Channel in LTE

Basic Function of Uplink & Downlink Transport Channel in LTE

Downlink Transport Channel

Broadcast Channel (BCH)

• A fixed TF
• Used for transmission of parts of BCCH, so called MIB

Paging Channel (PCH)

• Used for transmission of paging information from PCCH
• Supports discontinuous reception (DRX)

Downlink Shared Channel (DL-SCH)

• Main transport channel used for transmission of downlink data in LTE
• Used also for transmission of parts of BCCH, so called SIB
• Supports discontinuous reception (DRX)

Multicast Channel (MCH)

• Used to support MBMS

Uplink Transport Channel

Uplink Shared Channel (UL-SCH)

• Uplink counterpart to the DL-SCH

Random Access Channel(s) (RACH)

• Transport channel which doesn’t carry transport blocks
• Collision risk