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TS 38.425RAN3
NG-RAN —
NR User Plane protocol

use "3GPP‑Page" to get the Word version
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the ToC, based on the Word version, is reproduced for a better overview
V15.6.0 (PDF)  2019/06  25 p.

Rapporteur:  Ms. Xu, Lixiang

The present document specifies the NR user plane protocol functions used within NG‑RAN and, for EN‑DC (E‑UTRA‑NR Dual Connectivity), within E‑UTRAN.
NR user plane protocol functions may reside in nodes terminating either the X2‑U (for EN‑DC) or the Xn‑U or the F1‑U interface.

full Table of Contents for  TS 38.425  Word version:   15.6.0

Here   Top
1  ScopeWord-p. 5
2  References
3  Definitions and abbreviations
4  General
5  NR user plane protocol
5.1  General
5.2  NR user plane protocol layer services
5.3  Services expected from the Transport Network LayerWord-p. 7
5.4  Elementary proceduresWord-p. 8
5.5  Elements for the NR user plane protocolWord-p. 11
5.5.1  General
5.5.2  Frame format for the NR user plane protocolWord-p. 12
5.5.3  Coding of information elements in frames
5.5.3.1  PDU Type
5.5.3.2  Spare
5.5.3.3  Report pollingWord-p. 15
5.5.3.4  NR-U Sequence NumberUp
5.5.3.5  Desired buffer size for the data radio bearer
5.5.3.6  Desired Data Rate
5.5.3.7  DL Flush
5.5.3.8  DL discard NR PDCP PDU SN
5.5.3.9  DL Discard Blocks
5.5.3.10  DL discard NR PDCP PDU SN startWord-p. 16
5.5.3.11  DL discard Number of blocks
5.5.3.12  Discarded Block size
5.5.3.13  Lost Packet Report
5.5.3.14  Final Frame IndicationUp
5.5.3.15  Number of lost NR-U Sequence Number ranges reported
5.5.3.16  Start of lost NR-U Sequence Number range
5.5.3.17  End of lost NR-U Sequence Number rangeWord-p. 17
5.5.3.18  Highest Delivered NR PDCP SN Ind
5.5.3.19  Highest successfully delivered NR PDCP Sequence Number
5.5.3.20  Highest Transmitted NR PDCP SN Ind
5.5.3.21  Highest transmitted NR PDCP Sequence Number
5.5.3.22  Cause Report
5.5.3.23  Cause Value
5.5.3.24  PaddingWord-p. 18
5.5.3.28Void
5.5.3.29  Retransmission flag
5.5.3.30  Delivered Retransmitted NR PDCP SN Ind
5.5.3.31  Retransmitted NR PDCP SN Ind
5.5.3.32  Successfully delivered retransmitted NR PDCP Sequence Number
5.5.3.33  Retransmitted NR PDCP Sequence Number
5.5.3.34  Data Rate IndicationWord-p. 19
5.5.3.35  PDCP Duplication Indication
5.5.3.36  PDCP Duplication Activation Suggestion
5.5.3.37  Number of Assistance Information Field
5.5.3.38  Assistance Information TypeUp
5.5.3.39  Radio Quality Assistance Information
5.5.3.40  Assistance Information Report Polling Flag
5.5.3.41  Report DeliveredWord-p. 20
5.5.3.42  DL report NR PDCP PDU SN
5.5.3.43  User data existence flag
5.5.3.44  Number of octets for Radio Quality Assistance Information Field
5.5.3.45  Assistance Information Indication
5.5.4  Timers
5.6  Handling of unknown, unforeseen and erroneous protocol data
A  Example of using future ExtensionWord-p. 21
B  Change historyWord-p. 22

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