17
PDCP.
Table 5 PDCP Features
Procedure/Feature
Message/Functionality
PDCP Entity Handling
‧
PDCP entity establishment
‧
PDCP entity re-establishment
Data Radio Bearer (DRB)
‧
Unacknowledged Mode (UM) DRB
‧
Acknowledged Mode (AM) DRB
Protocol Data Units
‧
Data PDU with 12 bits PDCP SN
‧
Data PDU with 18 bits PDCP SN
Data Transfer: Transmit Operation
‧
Transmit operation
‧
Sequence numbering
Data Transfer: Receive Operation
Receive operation. Re-ordering is not
supported.
PDCP PDU Routing (for Split Bearers)
For split bearers, routing is performed in the
transmitting PDCP entity
Handling of Unknown, Unforeseen, and
Erroneous Protocol Data
Handling of PDCP PDU that contains reserved
or invalid values
Status Reporting Functionality
‧
Transmit operation
‧
Receive operation
Ciphering and Deciphering
DL ciphering and UL deciphering
Integrity Protection and Verification
DL integrity protection and UL integrity
verification. Excluding short
MAC-I generation for SRB.
•
RLC
The following table shows the status of features and procedures supported for RLC
Table 6 RLC Features
Procedure/Feature
Message/Functionality
RLC Entity Handling
•
RLC entity establishment
•
RLC entity re-establishment
Data Transfer Procedures: UM Mode
• Transmit operations: Segmentation
• Receive operations: Reassembly
Data Transfer Procedures: AM Mode
•
Transmit operations: Segmentation
• Receive operations: Reassembly
