Network Slice Handover for Partially Allowed Slice Mobility
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Solution Overview
Problem
Existing network slice mobility management systems face challenges in efficiently managing the mobility of wireless devices across different network slices, leading to suboptimal user experience and network resource utilization.
Innovation Solution
Implementing a framework for network slice mobility management that includes a service-based architecture, where network functions communicate through interfaces and provide services to each other, allowing dynamic selection and management of network slices based on device capabilities and traffic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional network mobility management is used, then device connectivity is maintained, but network resource utilization is suboptimal and user experience deteriorates
Solution Approach 1:
The patent implements dynamic network slice selection and mobility management that adapts to changing device capabilities, traffic conditions, and network state. The network function can dynamically assign devices to different network slices based on real-time requirements, enabling flexible resource allocation while maintaining reliable connectivity and user experience.
Solution Approach 2:
The system changes key parameters including network slice selection, mobility management parameters, and device capability parameters to optimize performance. By adjusting these parameters based on device type, service requirements, and network conditions, the system improves resource utilization while maintaining service reliability.
2Reliability
If network slice mobility management is optimized, then user experience improves, but system complexity increases
Solution Approach 1:
The patent introduces a network function as an intermediary that centralizes the complexity of network slice mobility management. This intermediary handles slice selection, mobility decisions, and coordination between different network elements, shielding the overall system from complexity while enabling sophisticated user experience optimization.
Solution Approach 2:
The system segments network functionality into distinct network slices and specialized network functions, each handling specific aspects of mobility management. This segmentation allows complex tasks to be divided into manageable, independent modules that can be developed, deployed, and maintained separately, reducing overall system complexity.
3Adaptability or versatility
If dynamic network slice selection is implemented, then service quality improves, but signaling overhead increases
Solution Approach 1:
The patent performs preliminary network slice selection and capability assessment during device registration and service setup phases. By making key decisions in advance rather than in real-time during mobility events, the system reduces the signaling overhead required during actual mobility operations while maintaining high service quality.
Data Source
AI summary
A second base station (BS) receives, in response to sending a path switch request message, a path switch acknowledge message comprising one or more identifiers of one or more partially allowed network slices for a wireless device, wherein the one or more partially allowed network slice are not supported in one or more tracking area (TAs) of a registration area (RA) of the wireless device. The second BS determines, based on a third BS supporting the one or more partially allowed network slices, a handover of the wireless device to the third BS, and sends, to the third BS, a handover request message comprising the one or more identifiers.