Service-based support for SMS in 5GC
The present document identifies the SMS transfer in 5G network based on service-based interfaces, which allow SMSF and UDM to only support the SBI based interfaces in 5GC and avoid resorting to legacy MAP and Diameter interfaces within the PLMN and across PLMNs including roaming scenarios, identifies the key issues that are related to support of Service-based interfaces in 5GC, analyses potential solutions to address the key issues.