4.30 gNB-CU-CP Trace Record Content

32.4233GPPRelease 16Subscriber and equipment traceTelecommunication managementTrace data definition and managementTS

The following table shows the trace record content for gNB-CU-CP network element

The trace record is the same for management based activation and for signalling based activation.

gNB-CU-CP shall support at least one of the following trace depth levels – Maximum, Medium or Minimum.

Table 4.30.1 : gNB-CU-CP Trace Record Content

Interface (specific messages)

Format

Level of details

Description

Min

Med

Max

Uu

Decoded

M

M

O

Message name

O

O

O

Record extensions

M

M

X

ID of traced gNB-CU-CP node

O

O

X

IE extracted from RRC messages between the traced gNB-CU-CP node and the UE as per 3GPP TS 38.331 [21]

Encoded*

X

X

M

Raw Uu Messages: RRC messages between the traced gNB-CU-CP node and the UE. The encoded content of the message is provided

NG-C

Decoded

M

M

O

Message name

O

O

O

Record extensions

M

M

X

ID of traced gNB-CU-CP node
AMF ID of the connected AMF

O

O

X

IE extracted from NGAP messages between the traced gNB-CU-CP node and Core Network as per 3GPP TS 38.413 [23]

Encoded*

X

X

M

Raw NG-C Messages NGAP: messages between the traced gNB-CU-CP node and Core Network The encoded content of the message is provided

Xn-C

Decoded

M

M

O

Message name

O

O

O

Record extensions

M

M

X

ID of traced gNB-CU-CP node
ID of neighbouring gNB-CU-CP/ng-eNB node

O

O

X

IE extracted from XnAP messages between the traced gNB-CU-CP node and the neighbouring gNB-CU-CP/ng-eNB node as per 3GPP TS 38.423 [24]

Encoded*

X

X

M

Raw Xn-C Messages: XnAP messages between the traced gNB-CU-CP node and the neighbouring gNB-CU-CP/ng-eNB node. The encoded content of the message is provided

X2-C

Decoded

M

M

O

Message name

O

O

O

Record extensions

M

M

X

ID of traced gNB-CU-CP node
ID of connected NSA eNB node (Option 3)

O

O

X

IE extracted from EN-DC X2AP messages between the traced gNB-CU-CP node and the connected NSA eNB node as per 3GPP TS 36.423 [17]

Encoded*

X

X

M

Raw EN-DC X2-C Messages: EN-DC X2AP messages between the traced gNB-CU-CP node and the connected NSA eNB node. The encoded content of the message is provided

F1-C

Decoded

M

M

O

Message name

O

O

O

Record extensions

M

M

X

ID of traced gNB-CU-CP
ID of connected gNB-DU

O

O

X

IE extracted from F1AP messages between the traced gNB-CU-CP and the gNB-DU as per 3GPP TS 38.473 [26]

Encoded*

X

X

M

Raw F1-C Messages: F1AP messages between the traced gNB-CU-CP and the gNB-DU. The encoded content of the message is provided

E1

Decoded

M

M

O

Message name

O

O

O

Record extensions

M

M

X

ID of traced gNB-CU-CP
ID of connected gNB-CU-UP

O

O

X

IE extracted from E1AP messages between the traced gNB-CU-CP and the gNB-CU-UP as per 3GPP TS 38.473 [26]

Encoded*

X

X

M

Raw E1 Messages: E1AP messages between the traced gNB-CU-CP and the gNB-CU-UP. The encoded content of the message is provided

Encoded* – the messages are left encoded in the format it was received.