UMTS, LTE 3- : , . , UE , SDU (Service Data Unit). SDU (, , ) PDCP RLC, PDU (Protocol Data Unit).
, , , PDU .
, , PDU , , , , .[3]
:
Broadcast Control Channel (BCCH) , UE . BCCH , .
Paging Control Channel (PCCH) ; , . (. 5.1).
Common Control Channel (CCCH) - .
Dedicated Traffic Channel (DTCH) ; .
Dedicated Control Channel (DCCH) UE.
Multicast Control Channel (MCCH) ; , MTCH.
Multicast Traffic Channel (MTCH) ; MBMS.
WCDMA/HSPA. , WCDMA/HSPA E-UTRA .
RLC/MAC . , .
GSM/UMTS, . (I Transmission Time Interval) . (MIMO) 4- TTI.
(TFTransport Format). , . , . , .
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:
Broadcast Channel (BCH) ; . BCCH.
Paging Channel (PCH) PCCH. PCH (discontinuous reception DRX), , PCH .
Downlink Shared Channel (DL-SCH) . E-UTRA . LTE, , HARQ (Hybrid Automatic Repeat request) , . DRX, . .
Multicast Channel (MCH) , MBMS. . MBSFN (Multimedia Broadcast over a Single Frequency Nerwork). MCH , MBSFN.
Uplink Shared Channel (UL-SCH) - , DL-SCH.
. 3.14.
. 3.14. .