Slice-Aware Cell Reselection in 5G Networks
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Solution Overview
Problem
Current 5G cell reselection methods do not consider slice information, leading to additional service delays and poor user experience as terminal devices may need to re-initiate the cell reselection process or undergo network redirection to ensure slice support.
Innovation Solution
A slice-based cell reselection method where terminal devices receive and utilize slice-related information from network devices to perform cell reselection, ensuring that the target cell supports the necessary slice, thereby avoiding unnecessary reselection processes and reducing service delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If terminal devices perform cell reselection without considering slice information, then the cell reselection process is simple and fast, but the terminal may need to re-initiate reselection or undergo network redirection to ensure slice support, leading to service delays
Solution Approach 1:
The network device performs preliminary actions by determining slice support information for neighboring cells before the terminal device needs to reselect. This information is then provided to the terminal in advance through RRC messages or system information, allowing the terminal to make informed reselection decisions without subsequent re-initiation or redirection, thus reducing service delay while maintaining reasonable process complexity
Solution Approach 2:
Slice support information acts as an intermediary that bridges the terminal device and network slice requirements. The network device generates and provides this intermediate information to the terminal, enabling the terminal to perform slice-aware cell reselection without directly implementing complex slice management functions, thereby reducing both time loss and complexity
2Ease of operation
If terminal devices use traditional cell reselection methods without slice information, then the reselection process is straightforward, but user experience deteriorates due to additional reselection processes and service delays
Solution Approach 1:
The terminal device performs self-service by autonomously determining slice support for neighboring cells using the provided slice support information, without requiring network redirection or additional reselection processes. This maintains operational simplicity while ensuring reliable slice support, as the terminal can independently make informed reselection decisions
Solution Approach 2:
The network device provides feedback to the terminal device about slice support status in neighboring cells through RRC messages or system information. This feedback mechanism enables the terminal to adjust its reselection behavior accordingly, maintaining both ease of operation and reliability of slice support without requiring complex manual intervention
Data Source
AI summary
Provided in the present application are a cell reselection method and apparatus based on a slice, and a device and a storage medium. The method comprises: a network device transmitting, to a terminal device, slice-related information that is associated with a serving cell frequency point and/or slice information that is associated with at least one neighboring cell frequency point; and the terminal device determining a final target reselected cell on the basis of the slice-related information that is associated with the serving cell frequency point and/or the slice information that is associated with the at least one neighboring cell frequency point.