9.2.7 Criticality Diagnostics

36.4233GPPEvolved Universal Terrestrial Radio Access Network (E-UTRAN)Release 17TSX2 Application Protocol (X2AP)

The Criticality Diagnostics IE is sent by the eNB/en-gNB when parts of a received message have not been comprehended or were missing, or if the message contained logical errors. When applicable, it contains information about which IEs were not comprehended or were missing.

IE/Group Name

Presence

Range

IE type and reference

Semantics description

Procedure Code

O

INTEGER (0..255)

Procedure Code is to be used if Criticality Diagnostics is part of Error Indication procedure, and not within the response message of the same procedure that caused the error.

Triggering Message

O

ENUMERATED(initiating message, successful outcome, unsuccessful outcome)

The Triggering Message is used only if the Criticality Diagnostics is part of Error Indication procedure.

Procedure Criticality

O

ENUMERATED(reject, ignore, notify)

This Procedure Criticality is used for reporting the Criticality of the Triggering message (Procedure).

Information Element Criticality Diagnostics

0..<maxNrOfErrors>

>IE Criticality

M

ENUMERATED(reject, ignore, notify)

The IE Criticality is used for reporting the criticality of the triggering IE. The value "ignore’" shall not be used.

>IE ID

M

INTEGER (0..65535)

The IE ID of the not understood or missing IE

>Type Of Error

M

ENUMERATED(not understood, missing, …)

Range bound

Explanation

maxNrOfErrors

Maximum no. of IE errors allowed to be reported with a single message. The value for maxnooferrors is 256.