Network Slice Handover for Partially Allowed Slice Mobility
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Solution Overview
Problem
Existing network slicing technologies face challenges in managing mobility across different network slices efficiently, leading to suboptimal user experience and resource utilization in heterogeneous wireless communication environments.
Innovation Solution
Implementing a framework for network slice mobility management that utilizes service-based architecture and network functions to dynamically allocate and manage network slices based on user device capabilities and traffic conditions, ensuring seamless transitions and optimized resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If network slicing is implemented to support heterogeneous service requirements, then service diversity and adaptability are improved, but mobility management complexity increases
Solution Approach 1:
The patent segments the network into multiple independent network slices, each optimized for specific service types (e.g., eMBB, URLLC, mMTC). Each slice has dedicated mobility management functions, allowing independent optimization without affecting other slices. This segmentation resolves the contradiction by enabling service diversity through multiple slices while managing complexity through modular, slice-specific management rather than monolithic management.
Solution Approach 2:
The patent implements dynamic mobility management where the network can flexibly allocate resources and adjust mobility parameters based on real-time traffic conditions and service requirements. The system dynamically selects appropriate mobility management strategies for each slice and can transition UEs between slices based on service needs, resolving the contradiction by making the system adaptable to different service types while maintaining manageable complexity through automation.
2Productivity
If dynamic resource allocation is implemented based on traffic conditions, then network efficiency is improved, but control complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where the network continuously monitors traffic conditions, UE mobility patterns, and resource utilization across network slices. Based on this feedback, the system automatically adjusts resource allocation, mobility parameters, and slice configurations. This feedback-driven approach resolves the contradiction by enabling efficient dynamic resource allocation while managing control complexity through automated closed-loop control rather than manual management.
Solution Approach 2:
The patent enables self-service capabilities where the network system automatically performs resource allocation, mobility management, and slice optimization without extensive human intervention. The system uses AI/ML algorithms to autonomously analyze traffic patterns and make optimization decisions, resolving the contradiction by achieving high network efficiency through automation while keeping control complexity manageable through self-managing functions.
3Ease of operation
If seamless mobility across network slices is provided, then user experience is improved, but signaling overhead increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring mobility parameters, resource allocations, and slice policies before UE mobility events occur. The network performs advance preparation of mobility routes and resource reservations across slices, allowing seamless handovers without extensive real-time signaling. This resolves the contradiction by providing seamless user experience through pre-planned mobility while reducing signaling overhead by minimizing real-time coordination requirements.
Data Source
AI summary
A second base station (BS) receives, from a core network node and 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.