GSMA Operator Platform Group – Southbound Interface Network Resources APIs
This specification defines the APIs that an Operator Platform would use for its interaction with the core network’s capabilities on its Southbound Interface to the Network Resources. This would enable the Operator Platform among others to expose NaaS capabilities, but is also needed to support edge compute scenarios where mobility of the end user is relevant, i.e. cases where the end user’s application session would have to be migrated to a different application server to avoid a too high latency.
The APIs covered for the Southbound Interface to the network resouces are mostly exposed by 3GPP’s NEF and SCEF functions. Therefore this specification defines a baseline for the APIs that those functions are expected to support to enable the Operator Platform use cases. This new version of the APIs expands on that by defining an API that can be used to map a user’s public IP address that could be used to identify them on various Northbound APIs, to a more permanent subscriber identifier such as their MSISDN that could then be used on other Southbound APIs. For ease of use, the Open API definition of this new API is provided in this yaml file. As described in the document, the server side of this API could be implemented in several ways.
The specification currently bases on the requirements in the first version of the Operator Platform architecture and requirements, i.e. GSMA PRD OPG.02 v1.0, with the intention being to bring alignment with the current version 3.0 in the next update.