Terminal Cell Selection Using Slice-Aware Frequency Priorities
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Solution Overview
Problem
Existing cell selection and reselection methods by terminals do not consider the actual situation of the terminal, leading to unreasonable cell choices based solely on frequency priorities broadcasted or configured by the base station.
Innovation Solution
A cell determination method that involves receiving slice-related information from the non-access stratum and performing cell selection and/or reselection based on this information, including determining frequency priority relations based on slice priorities and terminal policies or application priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cell selection is based solely on frequency priorities broadcasted by base station, then the selection process is simple, but the selection result does not conform to terminal's actual situation
Solution Approach 1:
The terminal performs cell selection or reselection before actual data transmission based on slice-related information and frequency priorities, ensuring the selected cell is suitable for the terminal's current situation and service requirements in advance
Solution Approach 2:
The terminal changes the cell selection parameters by incorporating slice-related information (such as network slice identifiers and frequency priorities associated with slices) into the selection process, moving beyond traditional signal-strength-only criteria to a multi-parameter decision framework
2Ease of manufacture
If cell selection uses only base station configured frequency priorities, then the configuration is straightforward, but it cannot consider terminal's specific needs
Solution Approach 1:
The system incorporates feedback mechanisms where the terminal reports its slice requirements and the network responds with appropriate frequency priority configurations, creating a closed-loop system that continuously adapts to terminal needs
Solution Approach 2:
The frequency priority configuration is segmented into slice-specific priorities, allowing different frequency priorities to be assigned to different network slices based on their service requirements, rather than using a single unified priority scheme
Data Source
AI summary
A cell determination method is performed by a terminal, and includes: receiving slice-related information from a non-access stratum through an access stratum; and performing at least one of a cell selection or a cell reselection based on the slice-related information.