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title	Reference Implementation Based on near-RT RIC

This section documents the details of the O-RAN App SDK which is primarily covering the implementation for near-RT RIC xApps.

information about how the O-RAN App SDK will evolve to cover other O-RAN apps can be found here.

Description

The C++ framework allows the programmer to create an xApp object instance, and to use that instance as the logic base. The xApp object provides a message level interface to the RIC Message Router (RMR), including the ability to register callback functions which the instance will drive as messages are received; much in the same way that an X-windows application is driven by the window manager for all activity. The xApp may also choose to use its own send/receive loop, and thus is not required to use the callback driver mechanism provided by the framework.

Bronze Release Version

Bronze Release development (master branch) version tag 4.0.5 (6 May 2020) -- Code is currently frozen; only bug fixes and documentation updates are being applied.

Release A frozen: 1.11.1 (Amber branch) 6 November 2019

Trial branch (r2-temp): 1.10.2 Fall 2019