8.7.19 Trace Start

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

8.7.19.1 General

The purpose of the Trace Start procedure is to allow the MeNB to request the en-gNB to initiate a trace session for a UE. The procedure uses UE-associated signalling.

8.7.19.2 Successful Operation

Figure 8.7.19.2-1: Trace Start, successful operation

The Trace Start procedure is initiated by the MeNB sending the TRACE START message to the en-gNB for that specific UE. Upon reception of the TRACE START message, the en-gNB shall initiate the requested trace session as described in TS 32.422 [6]. If the Trace Activation IE includes the MDT Configuration NR IE, the en-gNB shall take it into account for MDT function as described in TS 37.320 [31].

8.7.19.3 Abnormal Conditions

Void.