8.15 eNB Configuration Transfer

36.4133GPPEvolved Universal Terrestrial Radio Access Network (E-UTRAN)Release 17S1 Application Protocol (S1AP)TS

8.15.1 General

The purpose of the eNB Configuration Transfer procedure is to transfer RAN configuration information from the eNB to the MME in unacknowledged mode. The MME does not interpret the transferred RAN configuration information.

This procedure uses non-UE associated signalling.

8.15.2 Successful Operation

8.15.2.1 eNB Configuration Transfer

Figure 8.15.2.1-1: eNB Configuration Transfer procedure. Successful operation.

The procedure is initiated with an ENB CONFIGURATION TRANSFER message sent from the eNB to the MME.

If the MME receives the SON Configuration Transfer IE, it shall transparently transfer the SON Configuration Transfer IE towards the eNB indicated in the Target eNB-ID IE which is included in the SON Configuration Transfer IE.

If the MME receives the EN-DC SON Configuration Transfer IE, it shall transparently transfer the EN-DC SON Configuration Transfer IE either towards the eNB indicated in the Target eNB-ID IE or towards an eNB connected to the en-gNB indicated in the Target en-gNB-ID IE which is included in the EN-DC SON Configuration Transfer IE. The EN-DC SON Configuration Transfer IE may also contain, if available,

– the Target eNB ID IE,

– the Associated TAI IE,

– the Broadcast 5GS TAI IE,

for purposes described in TS 36.300 [14].

If the MME receives the Inter-system SON Configuration Transfer IE, it shall transparently transfer the Inter-system SON Configuration Transfer IE towards the AMF serving the NG-RAN Node indicated in the Target gNB-ID IE which is included in the Inter-system SON Configuration Transfer IE.

8.15.3 Abnormal Conditions

Not applicable.