Cell Reselection Priorities for Shared-Frequency NTN and TN
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Solution Overview
Problem
Existing communication technologies struggle with inflexible cell reselection in Non-terrestrial networks (NTNs) and Terrestrial networks (TNs) when different network types share the same frequency, as they cannot configure terminals to reselect to a specific type of network during cell reselection.
Innovation Solution
A method and apparatus for cell reselection that involves receiving and sending indication information to prioritize network types, using terminal and network equipment to determine and apply priorities based on terminal capabilities, configuration strategies, and report information to facilitate flexible cell reselection across NTN and TN networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different network types (TN, GEO satellite network, LEO satellite network, MEO satellite network) correspond to different frequencies, then the terminal can select the priority of the type of the network to be accessed according to the frequency priorities during cell reselection, but when different network types correspond to the same frequency, the network cannot configure the terminal to reselect to a specific type of network during cell reselection, which reduces flexibility
Solution Approach 1:
The patent segments the cell reselection decision process into two independent priority levels: frequency priority (first priority) and network type priority (second priority). This segmentation allows the network to independently configure priorities for different network types even when they operate on the same frequency, thereby resolving the contradiction between reselection flexibility and configuration complexity.
Solution Approach 2:
The patent introduces a new dimension (network type priority) to the existing cell reselection mechanism. By adding this second priority dimension beyond frequency priority, the system enables differentiated network type selection without requiring different frequencies, thus enhancing flexibility while maintaining manageable configuration complexity.
2Adaptability or versatility
If the network uses traditional frequency-based priority configuration for cell reselection, then the configuration is simple, but it cannot provide flexible network type selection when different network types share the same frequency
Solution Approach 1:
The patent segments the priority indication information into two distinct parts: frequency priority indication and network type priority indication. This segmentation allows the network to provide detailed network type selection capabilities while keeping each individual priority configuration relatively simple and manageable.
Solution Approach 2:
The patent uses the second priority information as an intermediary layer between the frequency selection and final network type selection. This intermediary mechanism enables the network to convey detailed network type preferences without directly complicating the frequency configuration, thus balancing adaptability with information management.
Data Source
AI summary
Cell reselection methods, a terminal, a network equipment, and a non-transitory computer-readable storage medium are provided. The method includes: receiving indication information, where the indication information is configured to indicate the priorities of respective network types; and performing cell reselection based on the indication information.