NTN Cell Selection Using Satellite Location and Type
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Solution Overview
Problem
In Non-Terrestrial Network (NTN) scenarios, cell selection cannot be performed reasonably based solely on channel quality due to unique characteristics of satellite communication, such as varying signal propagation delays and coverage areas, leading to inefficiencies and potential ping-pong effects.
Innovation Solution
A cell selection method that considers additional information beyond channel quality, including location information of the terminal, type of satellite, and satellite deployment scenario, to prioritize cell selection, ensuring reliable and efficient cell choice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If cell selection is performed based solely on channel quality, then the selection process is simple, but the reliability of cell selection deteriorates in NTN scenarios due to varying signal propagation delays and coverage areas
Solution Approach 1:
The patent changes the parameters used for cell selection from solely channel quality metrics to include multiple dimensions such as location information, satellite type, deployment scenario, and cell type. This multi-parameter approach resolves the contradiction by maintaining selection simplicity through standardized criteria while improving reliability through comprehensive factor consideration.
Solution Approach 2:
The patent segments the cell selection process into distinct evaluation dimensions (location, satellite type, deployment scenario, cell type), allowing each factor to be assessed independently and then integrated. This segmentation enables systematic handling of complexity while ensuring reliable selection decisions in NTN environments.
2Reliability
If cell selection considers multiple factors beyond channel quality, then cell selection reliability improves, but the selection process complexity increases
Solution Approach 1:
The patent creates a universal cell selection framework that handles multiple satellite types (LEO, MEO, GEO), deployment scenarios (transparent payload, regenerative payload), and cell types through a single integrated method. This multi-functional approach improves reliability across diverse NTN scenarios while managing complexity through standardized evaluation criteria.
Solution Approach 2:
The patent performs preliminary classification of satellites and cells based on type, deployment scenario, and location before final cell selection. This preliminary action organizes the multiple factors into structured categories, improving selection reliability while reducing the complexity of the final decision-making process.
3Ease of operation
If traditional cell selection is used in NTN scenarios, then the process is straightforward, but ping-pong effects occur due to varying signal propagation delays and coverage areas
Solution Approach 1:
The patent incorporates feedback mechanisms by continuously monitoring location information, satellite type, deployment scenario, and cell type to make informed cell selection decisions. This feedback-based approach prevents ping-pong effects by ensuring selections are based on comprehensive, up-to-date information rather than simple channel quality alone, thereby improving stability while maintaining operational ease.
Data Source
AI summary
Disclosed in the present application are a cell selection method and apparatus, a device and a storage medium, relating to the field of communications. The method comprises: in an NTN scenario, a terminal performing cell selection according to first information, the first information comprising at least one of the following: location information of the terminal; the type of a satellite; a deployment scenario of the satellite; and a cell type of the satellite.