2. Catalog
• What is RIC?
• Where is Near-RT RIC?
• Why Near-RT RIC?
• Architecture
• Interfaces
• Currents xApps
3. What is RIC ?
• RAN Intelligent Controller
• Non Real Time RIC
• Near Real Time RIC
• Goal :
• Based on the information from RAN, use ML or Analyze
information to configure or control RAN.
Non-RT RIC Near-RT RIC
Get information from RAN
Create/Choose training model
A1
Policy
Follow the policy
Adjust RAN parameters
5. Why Near-RT RIC ?
Near-RT RIC
Network Intelligence
Resource Assurance
Resource Control
Policy Enforcement
Handover Management
Radio-Link Management
Advanced SON
Load Balancing
RAN Slicing
6. The architecture in Near-RT RIC
Messaging infrastructure
• Message interaction in Near-RT RIC
• Low-latency, point-to-point
• RMR(RIC Message Router)
7. The architecture in Near-RT RIC
Conflict mitigation
• Resolves potentially overlapping or
conflicting requests from multiple xApps
Direct Conflicts
• Two/more xApps request different
settings but the Control Target & parameters
& configuration are almost the same
Indirect Conflicts
• A xApp uses the parameters of the
antenna angle; B xApp uses the
parameters of the measurement
deviation. Although they do not affect
each other, they all affect the size of the
boundary.
8. The architecture in Near-RT RIC
xApp subscription management
• Manages subscriptions from the xApps to the
E2 Nodes
• Merge the identical subscriptions from
different xApps into a single subscription
to the E2 Node
A xApp B xApp
E2 Node E2 Node
A xApp B xApp
xApp subscription management
E2 Node
9. The architecture in Near-RT RIC
Management services
• LCM(Life-Cycle Management) of xApp
• FCAPS Management of Near-RT RIC
10. The architecture in Near-RT RIC
Security
• Prevent malicious xApps from abusing
radio network information.
11. The architecture in Near-RT RIC
SDL(Share Data Layer)
• It’s an API
• Be used for storing and sharing any data
• Stateless application processes
12. The architecture in Near-RT RIC
xApp
• According to different application
scenarios, perform data monitoring and
parameter adjustment of RAN functions.
Image Descriptor
xApp