Study on roaming value added services
The present document describes use cases related to the following three Roaming Value-Added Services (RVAS) that are enabled by the PLMN for 5GS roaming:
• Welcome SMS
• Steering of Roaming (SoR) during the registration procedure
• Subscription-based routing to a particular core network (e.g., in a different country)
Potential requirements are derived for these three services and consolidated in a dedicated chapter. The report ends with recommendation regarding the continuation of the work.
NOTE: This document is not expected to introduce any changes to the security mechanisms between operators, and responsible groups will verify that 5GS security mechanisms are not negatively impacted by these requirements.