Oğuz Sunay, ONF
Thomas Vachuska, ONF
Saurav Das, ONF
SD-RAN™ is building open source components for the mobile RAN space, complementing O-RAN’s focus on architecture and interfaces by building and trialing O-RAN compliant open source components. This will foster the creation of true multi-vendor RAN solutions and help invigorate innovation across the RAN ecosystem.
SD-RAN is developing a near-real-time RIC (nRT-RIC) and a set of exemplar xApps for controlling the RAN. This RIC is cloud-native and builds on several of ONF’s well established platforms including the ONOS SDN Controller. The architecture for the SD-RAN nRT-RIC will leverage the O-RAN architecture and vision.
As the O-RAN specifications evolve, SD-RAN will follow them. As the SD-RAN project creates new functionality, all extensions and learning that come from building the system will be contributed back to the O-RAN Alliance with the intent that these extensions can help advance the O-RAN specifications.
Learn more details about ONF’s commitment to support of the O-RAN Alliance and SD-RAN’s near-term deliverables.
Mobile RAN – Past and Present
Mobile RAN networks have historically been implemented in vendor proprietary base stations. Operators would like to see interoperable RAN components, and to have control over spectrum optimization and end-user experience.
Operators, through the O-RAN consortium, are advocating for a disaggregation of RAN networks into interoperable RU, DU, CU components
A near real-time RIC (RAN Intelligent Controller) is integral to the O-RAN architecture. The nRT-RIC supports xApps responsible for advanced functions (like handover) that historically have been opaque vendor proprietary functions embedded in the base stations.
The SD-RAN project is building an open source nRT-RIC and exemplar xApps to accelerate the adoption of the O-RAN architecture and the availability of interoperable O-RAN components.
At the heart of ONF’s SD-RAN architecture is the µONOS RIC, based on ONOS, the leading open source SDN control plane for operators.
ONOS RIC is a cloud-native, carrier-grade SDN controller that enables:
- Ease in scalability
- High performance
- High availability
- Support for multi-vendor equipment
The µONOS RIC uses a microservices architecture that includes the following elements:
- Certificate Manager
- Topology Manager
- Configuration Manager
- RAN Control Manager
- Distributed Store