11 Service related aspects

37.3403GPPMulti-connectivityNROverall descriptionRelease 17Stage 2TS

11.1 Roaming and Access Restrictions

The principles for conveying roaming and access restriction info for EN-DC are described in TS 36.300 [2].

For MR-DC with 5GC, SCG (re)selection at the SN is based on roaming and access restriction information in SN. If roaming and access restriction information is not available at the SN, the SN shall consider that there is no restriction for SCG (re)selection. Therefore, MN needs to convey the up-to-date roaming and access restriction information to SN via XnAP messages.

11.2 Support of Network Sharing

E-UTRAN and NG-RAN aspects of network sharing are specified in TS 36.300 [2] and TS 38.300 [3].

11.3 ARPI/SPID Handling from MN

Usage of the Subscriber Profile ID for RAT/Frequency Priority (SPID) and the Additional RRM Policy Index (ARPI) in E-UTRAN is specified in TS 36.300 [2] and applies to EN-DC. Therefore, the MN needs to convey the up-to-date ARPI/SPID information to the SN via X2AP messages.