Satellite System Information Subset Signaling for Lower Terminal Power
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Solution Overview
Problem
The challenge of reducing the broadcast amount of satellite configuration information in satellite communication systems to minimize signaling overheads and power consumption in terminal devices due to satellite switching.
Innovation Solution
A network device generates and sends system information containing configuration information for a proper subset of transmission points, using the same value tag as the original set, allowing terminal devices to skip reading unnecessary information based on the tag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network device delivers all configuration information of the first transmission point set to the terminal device, then the terminal device has complete information for satellite switching, but the broadcast amount of configuration information increases and signaling overheads increase
Solution Approach 1:
The patent segments the transmission point set into a first transmission point set and a second transmission point set, where the second set is a proper subset of the first set. The network device delivers configuration information of only the second transmission point set to the terminal device, rather than all transmission points. This segmentation reduces the quantity of configuration information broadcast while maintaining reliability for the current service period.
Solution Approach 2:
The network device delivers configuration information of the second transmission point set in advance to the terminal device before the terminal device needs to switch satellites. This preliminary action ensures the terminal device has the necessary information for future satellite switching without requiring the broadcast of complete configuration information for all transmission points.
2Adaptability or versatility
If the network device delivers all configuration information of the first transmission point set, then the terminal device can access any satellite, but signaling overheads increase
Solution Approach 1:
The patent divides the transmission point set into two segments: the first transmission point set (current service) and the second transmission point set (future service). By delivering configuration information of only the second set, the system reduces signaling overheads while maintaining the terminal device's ability to access satellites in the future period.
Solution Approach 2:
The patent applies different quality characteristics to different parts of the configuration information. The configuration information of the second transmission point set is delivered with the understanding that the terminal device only needs to read it when necessary for satellite switching, rather than requiring all configuration information to be always available.
3Loss of information
If the terminal device reads all configuration information in system information, then the terminal device has complete data, but power consumption of the terminal device increases
Solution Approach 1:
The patent extracts only the necessary configuration information (second transmission point set) from the complete configuration information (first transmission point set) and delivers it to the terminal device. This extraction reduces the amount of data the terminal device needs to read and process, thereby reducing power consumption while maintaining necessary information for satellite switching.
Solution Approach 2:
The network device performs preliminary action by delivering configuration information of the second transmission point set in advance. The terminal device can then use this pre-delivered information when needed for satellite switching without having to read through complete configuration information, reducing power consumption.
4Reliability
If the network device sends system information with all transmission points, then the terminal device receives complete information, but the information amount of configuration information delivered increases
Solution Approach 1:
The patent segments the transmission point set into a first transmission point set and a second transmission point set (proper subset). The network device sends system information containing configuration information of only the second transmission point set, reducing the information amount delivered while maintaining reliability for the current and future service periods.
Data Source
AI summary
A first network device obtains a first value tag in first system information, where the first value tag is a value tag associated with configuration information of a first transmission point set in the first system information. The first network device generates second system information, where the second system information includes configuration information of a second transmission point set and a second value tag associated with the configuration information of the second transmission point set, the second transmission point set is a proper subset of the first transmission point set, and a value of the second value tag is the same as a value of the first value tag.