Tech-
invite
3GPP
space
IETF
space
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Content for
TS 36.425
Word version: 16.0.0
1…
5…
5
X2 user plane protocol
5.1
General
5.2
X2 user plane protocol layer services
5.3
Services expected from the X2 Transport Network Layer
5.4
Elementary procedures
5.5
Elements for the X2 user plane protocol
5.6
Handling of unknown, unforeseen and erroneous protocol data
$
Change History
5
X2 user plane protocol
Word‑p. 7
5.1
General
5.2
X2 user plane protocol layer services
5.3
Services expected from the X2 Transport Network Layer
5.4
Elementary procedures
Word‑p. 8
5.4.1
Transfer of Downlink User Data
5.4.1.1
Successful operation
5.4.1.2
Unsuccessful operation
5.4.2
Downlink Data Delivery Status
5.4.2.1
Successful operation
5.4.2.2
Unsuccessful operation
Word‑p. 9
5.5
Elements for the X2 user plane protocol
Word‑p. 10
5.5.1
General
5.5.2
Frame format for the X2 user plane protocol
Word‑p. 11
5.5.2.1
DL USER DATA (PDU Type 0)
5.5.2.2
DL DATA DELIVERY STATUS (PDU Type 1)
Word‑p. 12
5.5.2.3
DL DATA DELIVERY STATUS EXTENDED (PDU Type 2)
|R13|
5.5.2.4
DL USER DATA EXTENDED (PDU Type 3)
|R13|
Word‑p. 13
5.5.3
Coding of information elements in frames
Word‑p. 14
5.5.3.1
PDU Type
5.5.3.2
Spare
5.5.3.3
X2-U Sequence Number
5.5.3.4
Lost Packet Report
5.5.3.5
Final Frame Indication
5.5.3.6
Highest successfully delivered PDCP Sequence Number
5.5.3.7
Desired buffer size for the E-RAB
5.5.3.8
Minimum desired buffer size for the UE
Word‑p. 15
5.5.3.9
Number of lost X2-U Sequence Number ranges reported
5.5.3.10
Start of lost X2-U Sequence Number range
5.5.3.11
End of lost X2-U Sequence Number range
5.5.3.12
Padding
5.5.3.13
Highest successfully delivered PDCP Sequence Number Extended
|R13|
5.5.3.14
Start of lost X2-U Sequence Number range Extended
|R13|
5.5.3.15
End of lost X2-U Sequence Number range Extended
|R13|
Word‑p. 16
5.5.3.16
X2-U Sequence Number Extended
|R13|
5.5.4
Timers
5.6
Handling of unknown, unforeseen and erroneous protocol data
$
Change History
Word‑p. 17