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Content for TS 36.323 Word version: 18.0.0

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5.1 PDCP Data Transfer Procedures 5.2 Re-establishment procedure 5.3 PDCP Status Report 5.4 PDCP discard 5.4a Duplicate PDCP discard 5.5 Robust Header Compression and Decompression 5.6 Ciphering and Deciphering 5.7 Integrity Protection and Verification 5.8 Handling of unknown, unforeseen and erroneous protocol data 5.9 PDCP Data Recovery procedure 5.10 Status report for LWA 5.11 Uplink Data compression and decompression 5.12 Uplink data switching 5.13 PDCP Reconfiguration 5.14 Ethernet header compression and decompression

5 PDCP procedures p. 16

5.1 PDCP Data Transfer Procedures p. 16

5.1.1 UL Data Transfer Procedures p. 16

5.1.2 DL Data Transfer Procedures p. 17

5.1.2.1 Procedures for DRBs p. 17

5.1.2.1.1 Void

5.1.2.1.2 Procedures for DRBs mapped on RLC AM when the reordering function is not used p. 17

5.1.2.1.2a RN procedures for DRBs mapped on RLC AM p. 18

5.1.2.1.3 Procedures for DRBs mapped on RLC UM when the reordering function is not used p. 19

5.1.2.1.3a RN procedures for DRBs mapped on RLC UM p. 19

5.1.2.1.4 Procedures for DRBs mapped on RLC AM or RLC UM, for LWA bearers and SLRB when the reordering function is used p. 19

5.1.2.1.4.1 Procedures when a PDCP PDU is received from the lower layers p. 20

5.1.2.1.4.2 Procedures when t-Reordering expires p. 21

5.1.2.1.4.3 Procedures when the value of t-Reordering is reconfigured p. 22

5.1.2.2 Procedures for SRBs p. 22

5.1.2.2.1 Procedures for SRBs when the reordering function is not used p. 22

5.1.2.2.2 Procedures for SRBs when the reordering function is used p. 22

5.1.3 SL Data Transmission Procedures p. 23

5.1.4 SL Data Reception Procedures p. 23

5.2 Re-establishment procedure p. 23

5.2.1 UL Data Transfer Procedures p. 23

5.2.1.1 Procedures for DRBs mapped on RLC AM p. 23

5.2.1.2 Procedures for DRBs mapped on RLC UM p. 24

5.2.1.3 Procedures for SRBs p. 24

5.2.2 DL Data Transfer Procedures p. 25

5.2.2.1 Procedures for DRBs mapped on RLC AM while the reordering function is not used p. 25

5.2.2.1a Procedures for DRBs mapped on RLC AM while the reordering function is used p. 25

5.2.2.2 Procedures for DRBs mapped on RLC UM when the reordering function is not used p. 25

5.2.2.2a Procedures for DRBs mapped on RLC UM when the reordering function is used p. 26

5.2.2.3 Procedures for SRBs p. 26

5.2.2.4 Procedures for LWA bearers p. 26

5.3 PDCP Status Report p. 26

5.3.1 Transmit operation p. 26

5.3.2 Receive operation p. 27

5.4 PDCP discard p. 27

5.4a Duplicate PDCP discard p. 27

5.5 Robust Header Compression and Decompression p. 28

5.5.1 Supported header compression protocols and profiles p. 28

5.5.2 Configuration of ROHC p. 28

5.5.3 Protocol parameters p. 28

5.5.4 Header compression using ROHC p. 29

5.5.5 Header decompression using ROHC p. 29

5.5.6 PDCP Control PDU for interspersed ROHC feedback packet p. 30

5.5.6.1 Transmit Operation p. 30

5.5.6.2 Receive Operation p. 30

5.6 Ciphering and Deciphering p. 30

5.6.0 General p. 30

5.6.1 SL Ciphering and Deciphering for one-to-many communication p. 30

5.6.2 SL Ciphering and Deciphering for one-to-one communication p. 31

5.6.3 Handling of LWA end-marker PDCP Control PDU p. 31

5.6.3.1 Transmit operation p. 31

5.6.3.2 Receive Operation p. 31

5.7 Integrity Protection and Verification p. 32

5.8 Handling of unknown, unforeseen and erroneous protocol data p. 32

5.9 PDCP Data Recovery procedure p. 32

5.10 Status report for LWA p. 33

5.10.1 Transmit operation p. 33

5.10.2 LWA status report p. 33

5.10.3 Receive operation p. 34

5.11 Uplink Data compression and decompression p. 34

5.11.1 UDC protocol p. 34

5.11.2 Configuration of UDC p. 34

5.11.3 UDC header p. 34

5.11.4 Uplink data compression p. 34

5.11.5 Pre-defined dictionary p. 35

5.11.6 UDC buffer reset procedure p. 35

5.11.7 UDC checksum error handling p. 35

5.12 Uplink data switching p. 35

5.13 PDCP Reconfiguration p. 35

5.14 Ethernet header compression and decompression p. 36

5.14.1 Supported header compression protocols p. 36

5.14.2 Configuration of EHC p. 36

5.14.3 Protocol parameters p. 36

5.14.4 Header compression using EHC p. 36

5.14.5 Header decompression using EHC p. 36

5.14.6 PDCP Control PDU for EHC feedback packet p. 37

5.14.6.1 Transmit Operation p. 37

5.14.6.2 Receive Operation p. 37

5.14.7 Simultaneous configuration of ROHC and EHC p. 37