RIC Scheduling Control for Per-Terminal SLA Monitoring in 5G
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Solution Overview
Problem
In wireless communication systems, ensuring service level agreements (SLAs) for diverse user services is challenging, particularly in 5G networks with varying quality of service (QoS) and quality of experience (QoE) requirements across terminals and network slices, necessitating improved methods for monitoring and controlling SLA satisfaction.
Innovation Solution
A radio access network intelligent controller (RIC) collects and analyzes QoS/QoE violation information for individual terminals or groups, transmitting configuration and control messages via the E2 interface to manage network resources effectively, ensuring SLA compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RIC monitors and controls SLA satisfaction for each terminal or terminal group, then the service level agreement compliance is improved, but the interface load and system complexity increase
Solution Approach 1:
The system segments terminal monitoring into individual terminal or terminal group levels, allowing the RIC to monitor SLA satisfaction for specific groups rather than all terminals uniformly. This segmentation reduces the overall monitoring load while maintaining compliance for critical terminals.
Solution Approach 2:
The RIC performs partial monitoring by selecting specific terminals or terminal groups for SLA satisfaction monitoring based on service requirements. This partial action approach reduces interface load while ensuring SLA compliance for terminals where it is most needed.
2Measurement precision
If the RIC collects QoS/QoE violation information for individual terminals or groups, then the measurement precision is improved, but the loss of time and processing overhead increase
Solution Approach 1:
The system performs preliminary configuration by setting up subscription request messages with specific configuration information before monitoring begins. This preliminary action defines which terminals or groups to monitor, allowing efficient data collection without processing overhead for all terminals.
Solution Approach 2:
The RIC implements feedback mechanisms by receiving indication messages from the O-DU containing QoS/QoE violation information, processing this feedback data, and transmitting control messages with scheduling information back to the O-DU. This closed-loop feedback enables precise SLA satisfaction measurement while optimizing processing efficiency.
Data Source
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AI summary
An operation method of an RIC for ensuring a service level agreement in a wireless communication system comprises the steps of: transmitting, to an O-DU, a subscription request message including configuration information for reporting whether the service level agreement is satisfied for each terminal or terminal group; receiving an indication message including information on whether the service level agreement is satisfied, from the O-DU through an E2 interface; and transmitting, to the O-DU, a control message including scheduling information configured on the basis of the indication message.