Slice-Specific Cell Reselection via Dynamic Priority Disregard
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Solution Overview
Problem
Existing slice-specific cell reselection methods in mobile communication systems may fail to prioritize the network slice desired by user equipment, leading to suboptimal cell reselection and potential inability to execute desired user applications.
Innovation Solution
The proposed method involves the base station transmitting a slice priority disregard permission message when the available radio resource capacity meets a threshold, allowing user equipment to perform slice-specific cell reselection using the desired network slice without considering the initially provided slice priority.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network provides slice priority to control cell reselection, then network resource management is improved, but user equipment cannot prioritize its desired network slice
Solution Approach 1:
The system dynamically switches between two cell reselection modes: slice priority-based reselection (when radio resources are abundant) and user-desired slice-based reselection (when radio resources are scarce). This dynamic adaptation allows the network to optimize resource management while preserving user equipment flexibility under different conditions, resolving the contradiction between network control and user autonomy.
Solution Approach 2:
The network changes the reselection parameter from slice priority (network-controlled) to user-desired slice (user-controlled) based on radio resource availability. By adjusting which parameter governs cell reselection according to system state, the patent enables both network-managed resource allocation and user-prioritized slice selection without simultaneous conflict.
2Productivity
If the user equipment performs cell reselection based on network-provided slice priority, then network resource allocation is optimized, but the user equipment may fail to camp on cells supporting desired network slices
Solution Approach 1:
The network proactively transmits a slice priority disregard permission message to prevent the contradiction from manifesting. By anticipating that user equipment might fail to camp on desired slices under strict priority control, the network pre-emptively grants permission to disregard slice priority when resources are abundant, ensuring user applications can execute reliably while maintaining efficient resource allocation.
Solution Approach 2:
The slice priority disregard permission message acts as an intermediary mechanism between network resource management and user slice selection. This intermediate signal allows user equipment to temporarily override network-provided slice priority when permitted, enabling it to camp on cells supporting desired network slices without permanently disrupting network resource allocation efficiency.
3Device complexity
If the network always provides slice priority control, then resource management is simplified, but user equipment loses ability to select desired network slices
Solution Approach 1:
The system transitions from static slice priority control to dynamic control that adapts to radio resource conditions. When resources are abundant, the network simplifies management by allowing user equipment to disregard slice priority and select desired slices freely. When resources are scarce, the network reactivates slice priority control. This dynamic approach maintains simplicity while restoring adaptability when needed.
Solution Approach 2:
The slice priority disregard permission mechanism serves multiple functions: it simplifies resource management by reducing control signaling overhead when resources are abundant, while simultaneously enabling user equipment to access desired network slices. This multi-functional approach handles both resource management simplicity and slice selection adaptability within a single framework.
Data Source
AI summary
A slice-specific cell reselection method according to one aspect is a slice-specific cell reselection method for a mobile communication system. The slice-specific cell reselection method includes a step of receiving, at a user equipment, a slice priority indicating a priority per network slice from a base station or an access management apparatus. The slice-specific cell reselection method further includes a step of transmitting, at the base station, a slice priority disregard permission message indicating that disregarding a slice priority is permitted when an available capacity of a radio resource is greater than or equal to a threshold value. The slice-specific cell reselection method further includes a step of performing slice-specific cell reselection using the network slice desired by the user equipment without using a slice priority in response to reception of the slice priority disregard permission message.