Study on security aspects of enhanced support of Non-Public Networks (NPN) phase 2
The aim of the present document is to study the security aspects for any potential enhancements to be developed based on the outcome of the study in TR 23.700-08 [2]. For each of the objectives in the scope of the study in TR 23.700-08 [2], potential security aspects that are to be covered in this study are as follows:
- Support for enhanced mobility by enabling support for idle and connected mode mobility between SNPNs without new network selection.
- Study if existing security mechanisms for mobility between PLMNs can be reused for SNPNs or if new security mechanisms are needed.
- Support for non-3GPP access for SNPN
- Study if existing security mechanisms for enabling non-3GPP access in a PLMN can be reused for enabling non-3GPP access in an SNPN or if new security mechanisms are needed.
- Address new requirements (e.g., TS 22.261 [3] requirements for Providing Access to Local Services) related to NPN
- Study the trust model for the resulting architecture for enabling Localized Services via a local hosting NPN.
- Study if existing mechanisms for a UE to access an NPN can be reused for enabling a UE to authenticate with and access the local hosting NPN and the localized services via the hosting NPN with proper authorization, or if new security mechanisms are needed.