Satellite Beam Parameter Selection in Non-Terrestrial Networks
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Solution Overview
Problem
In non-terrestrial wireless communication networks, existing systems face challenges in efficiently updating satellite and beam specific information, leading to suboptimal communication quality due to changes in satellite characteristics and beam patterns over time.
Innovation Solution
A method for user equipment (UE) and base stations to determine whether to use standard or satellite-cell specific parameters for accessing a cell, based on received system information blocks, master information blocks, or radio resource control messages, which include parameters such as beam pattern information and ephemeris, to ensure optimal communication settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standard parameters are used for all satellites, then device complexity is reduced and ease of operation is improved, but communication quality deteriorates when satellite characteristics change over time
Solution Approach 1:
The system dynamically selects between standard parameters and satellite-cell specific parameters based on whether changes in satellite characteristics have been detected. This dynamic adaptation allows the system to maintain ease of operation under stable conditions while ensuring communication quality when changes occur, directly resolving the technical contradiction.
Solution Approach 2:
The patent changes the parameter set used for cell access based on detected changes in satellite characteristics. When changes are detected, the system transitions from using standard parameters to satellite-cell specific parameters, and vice versa. This parameter switching mechanism resolves the contradiction by adapting the parameter selection to actual operational conditions.
2Reliability
If satellite-cell specific parameters are used, then communication quality is improved by adapting to satellite changes, but device complexity increases due to parameter management
Solution Approach 1:
The system dynamically determines whether to use standard or satellite-cell specific parameters based on change detection. This dynamic approach avoids the constant complexity of managing satellite-cell specific parameters while maintaining communication quality when needed, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The patent implements conditional parameter selection, switching between standard parameters and satellite-cell specific parameters based on whether satellite characteristic changes are detected. This reduces device complexity by using simpler standard parameters when appropriate, while maintaining communication quality when changes occur.
3Adaptability or versatility
If the system continuously monitors satellite characteristic changes, then adaptability is improved, but use of energy increases due to continuous monitoring operations
Solution Approach 1:
The system performs change detection periodically or event-driven rather than continuously. The base station determines whether changes in satellite characteristics have occurred and notifies the UE accordingly, rather than requiring continuous monitoring. This periodic/event-driven approach maintains adaptability while significantly reducing energy consumption compared to continuous monitoring.
Solution Approach 2:
The base station acts as an intermediary that performs the change detection and communicates results to the UE. This eliminates the need for the UE to continuously monitor satellite characteristics itself, reducing the UE's energy consumption while maintaining system adaptability through the base station's monitoring and notification mechanism.
4Productivity
If the system uses simplified standard parameters, then productivity is improved through faster cell access, but measurement precision deteriorates in detecting satellite-specific changes
Solution Approach 1:
The patent segments the parameter selection into two paths: standard parameters for general cell access (maintaining productivity) and satellite-cell specific parameters for precise satellite-specific operations (maintaining measurement precision). The system selects the appropriate segment based on whether changes are detected, resolving the contradiction between productivity and measurement precision.
Solution Approach 2:
The system changes the parameter set based on operational context. Standard parameters are used for initial cell access to maintain productivity, while satellite-cell specific parameters are activated when changes are detected to ensure measurement precision. This contextual parameter switching resolves the contradiction.
Data Source
AI summary
Aspects relate to mechanisms for wireless communication devices to update satellite and beam specific information. A user equipment (UE) selects a first cell associated with a first satellite for wireless communication in the non-terrestrial network. The UE determines whether to use one or more standard parameters or one or more satellite-cell specific parameters for accessing the first cell. The one or more standard parameters are based on one or more standard characteristics common to a plurality of satellites including the first satellite. The one or more satellite-cell specific parameters are based on a change to at least one standard characteristic of the one or more standard characteristics of the first satellite.