Network Slice SLA Recovery Through UE Redirection and Slice Switching
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Solution Overview
Problem
Current network configurations fail to optimize network slice performance due to variations in packet delays, throughput, jitter, and packet errors, leading to resource consumption and poor user experience, especially when network slices fail to meet service level agreements.
Innovation Solution
A network device, such as an access and mobility management function (AMF), receives indications of network slice performance issues and redirects user equipment (UE) to neighbor RANs or moves UE to different network slices that meet service level agreements by utilizing network data analytics and policy control functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network configurations are maintained as current, then network infrastructure remains stable, but network slice performance deteriorates due to variations in packet delays, throughput, jitter, and packet errors
Solution Approach 1:
The system dynamically adjusts network slice configurations and UE routing based on real-time backhaul performance conditions. The AMF function monitors performance metrics and adapts network slice assignments dynamically, transitioning from static to dynamic configuration management to maintain reliable service levels while optimizing resource utilization.
Solution Approach 2:
The system changes network configuration parameters including network slice identifiers, routing decisions, and service level agreement thresholds based on monitored performance conditions. By adjusting these parameters in response to backhaul variations, the system maintains reliable network slice performance while preventing resource wastage.
2Reliability
If network device redirects UE to neighbor RAN or moves UE to different network slice, then network slice performance improves, but device complexity increases
Solution Approach 1:
The network device performs self-service by automatically monitoring backhaul performance, detecting SLA violations, and executing redirection or slice migration decisions without manual intervention. This automation maintains service level agreement compliance while managing complexity through autonomous operation rather than manual processes.
Solution Approach 2:
The system implements feedback loops where the AMF function continuously monitors network slice performance metrics and uses this feedback to trigger automated redirection or migration actions when SLA violations are detected. This closed-loop control maintains reliability while managing complexity through systematic decision-making based on performance feedback.
Data Source
AI summary
A network device may receive an indication that a radio access network fails to support a network slice target service level agreement for a user equipment associated with a network slice. The network device may provide, to the radio access network, a network slice identifier associated with the network slice target service level agreement not supported by the radio access network. The network device may provide, to the radio access network, an indication of whether a neighbor radio access network supports the network slice target service level agreement to cause the radio access network to redirect the user equipment to a neighbor radio access network or to move the user equipment to another network slice.