Network Slice Propagation Delay Compensation via QoS Budget
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Solution Overview
Problem
Current 5G wireless networks lack a method to accurately select and configure propagation delay compensation (PDC) for network slices, which are essential for time-sensitive applications, as existing methods do not account for quality of service (QoS) and service level agreements (SLA) metrics.
Innovation Solution
A propagation delay compensation service that generates a time synchronization error budget based on 5G QoS identifiers and correlated QoS characteristics, providing this information to RAN devices to select and configure PDC methods such as timing advance or multi-round-trip-time, tailored to specific network slices and end devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single propagation delay compensation method is used for all network slices, then device complexity is reduced, but time synchronization precision deteriorates for time-sensitive applications
Solution Approach 1:
The patent applies local quality by selecting different propagation delay compensation methods for different network slices based on their specific QoS requirements. Time-sensitive network slices receive timing advance-based PDC for high precision, while non-time-sensitive slices use other methods, ensuring each slice gets the appropriate level of precision without unnecessarily complicating the entire system.
Solution Approach 2:
The patent changes the parameter of PDC method selection based on QoS parameters and service level agreements. By dynamically selecting among timing advance, multi-round-trip-time, and other PDC methods according to the specific requirements of each network slice, the system achieves optimal time synchronization precision for time-sensitive applications while managing overall complexity.
2Reliability
If propagation delay compensation is configured without considering QoS and SLA, then ease of operation is improved, but service quality deteriorates for time-sensitive applications
Solution Approach 1:
The patent implements preliminary action by pre-configuring propagation delay compensation methods based on QoS parameters and service level agreements before network operations begin. The system determines appropriate PDC methods for different network slices in advance, ensuring reliable service quality for time-sensitive applications without requiring complex real-time adjustments during operation.
Solution Approach 2:
The patent uses feedback mechanisms to monitor and adjust PDC configuration based on actual network performance and QoS requirements. By continuously evaluating whether the selected PDC method meets the service level agreements for each network slice, the system maintains high reliability while simplifying operational complexity through automated adjustments.
Data Source
AI summary
A method, a network device, and a non-transitory computer-readable storage medium are described in relation to an propagation delay compensation service. The propagation delay compensation service may calculate or select propagation delay compensation method and configuration data based on a time synchronization error budget value, which may be calculated based on quality of service information associated with a network slice, network slice information, and time sensitive communication assistance information. The propagation delay compensation service may calculate or select the propagation delay compensation method and configuration data based on other context information.