Adaptive Packet Scheduling for 5G SLA Assurance
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Solution Overview
Problem
Current packet handling in transport devices, such as routers and switches, is insufficient to meet the service level agreements (SLAs) of 5G networks due to limited queue granularity and static scheduling policies, which fail to consider per-flow requirements and dynamic network conditions.
Innovation Solution
An adaptive packet scheduling and policy service is implemented within the Open Network Automation Platform (ONAP) framework, utilizing an admission control service to estimate load, an analytics service to analyze policies, and a policy service with AI to dynamically manage and configure scheduling policies based on real-time network information, ensuring SLA assurance without requiring costly resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If static scheduling policies are used in transport devices, then device complexity is reduced and ease of operation is improved, but service level agreement compliance deteriorates and adaptability to dynamic network conditions worsens
Solution Approach 1:
The patent implements dynamic scheduling policies that automatically adapt to changing network conditions. The system continuously monitors network state and adjusts scheduling parameters in real-time, transforming static configurations into dynamic, responsive policies that maintain SLA compliance without manual intervention.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor service level agreement metrics and network conditions, then use this information to automatically adjust scheduling policies. This closed-loop control ensures SLA compliance is maintained adaptively based on actual network performance and demand.
2Device complexity
If limited queue granularity is used in transport devices, then device complexity is reduced, but the ability to support diverse 5G services and meet per-flow requirements deteriorates
Solution Approach 1:
The patent segments network traffic into multiple queues with different granularities to handle diverse service requirements. By creating hierarchical queue structures that can be dynamically configured, the system provides fine-grained control for specific service types while maintaining coarser aggregation for overall traffic management, thus supporting 5G service diversity without proportionally increasing complexity.
Solution Approach 2:
The scheduling system is designed with universal queue structures that can serve multiple functions. The same queue infrastructure supports different 5G services, traffic types, and priority levels through configurable policies, eliminating the need for separate dedicated structures for each service type.
3Ease of manufacture
If static scheduling policies are used, then implementation cost is reduced, but productivity in terms of network resource utilization and SLA assurance deteriorates
Solution Approach 1:
The system implements self-service scheduling where the network automatically monitors its own state and adjusts scheduling policies without external intervention. This autonomous adaptation optimizes resource utilization and ensures SLA compliance while avoiding the costs associated with manual policy management and frequent human intervention.
Solution Approach 2:
The patent dynamically changes scheduling parameters based on network conditions and service requirements. By automatically adjusting key parameters such as queue weights, priority levels, and allocation ratios, the system optimizes resource utilization and SLA performance without requiring complex manual reconfiguration or additional hardware resources.
Data Source
AI summary
A method, a system, and a non-transitory storage medium are described in which an adaptive packet scheduling and policy service is provided. The adaptive packet scheduling and policy service may provide adaptive packet scheduling in a transport domain of a network based on adaptive packet scheduling policies and network information. The adaptive packet scheduling and policy service may be applied to assured network services. The adaptive packet scheduling and policy service may also provide transport domain budgeting based on service level agreement violations associated with transport devices in the transport domain.