Satellite Access Signaling With Tiered Location Accuracy
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Solution Overview
Problem
Existing satellite-based communication systems face challenges in ensuring high-accuracy location and motion information of satellites, which are typically maintained by organizations and not publicly available in real time, leading to insufficient communication quality and accuracy in positioning and communication processes.
Innovation Solution
A communication method and apparatus that distinguishes between first and second location information of varying accuracy, where the first location information is broadcast and the second, higher-accuracy information is encrypted and sent selectively to authorized communication apparatuses, using correction parameters and keys to enhance security and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If broadcast signaling is used to provide location information, then accessibility is improved, but accuracy deteriorates
Solution Approach 1:
The patent segments location information into two categories: first location information (low accuracy) broadcast to all UEs, and second location information (high accuracy) selectively provided to specific UEs. This segmentation allows the system to maintain broad accessibility while providing enhanced accuracy to users who need it, resolving the contradiction between accessibility and accuracy.
Solution Approach 2:
The patent applies local quality by providing different levels of location information accuracy to different user groups. General UEs receive standard accuracy via broadcast, while specific UEs requiring higher precision receive enhanced location data through selective mechanisms. This differentiated approach allows the system to optimize for both accessibility and accuracy in appropriate contexts.
2Measurement precision
If high-accuracy location information is made publicly available, then positioning accuracy is improved, but security deteriorates
Solution Approach 1:
The patent segments location information into public (first location information) and restricted (second location information) portions. High-accuracy data is not made universally accessible but is selectively provided to authorized UEs, thereby maintaining security while enabling accurate positioning for those who need it.
Solution Approach 2:
The patent introduces an intermediary mechanism (selective provision system) between the satellite and UEs for delivering high-accuracy location information. This intermediary controls access to sensitive data, ensuring that only authorized users can obtain high-accuracy information while the general public receives standard accuracy data, thus balancing security and accuracy requirements.
3Reliability
If location information is provided at different accuracy levels, then communication quality is improved, but system complexity increases
Solution Approach 1:
The patent segments location information delivery into two distinct pathways: broadcast signaling for general UEs and selective provision for specific UEs. This segmentation enables the system to provide appropriate accuracy levels for different communication scenarios while managing complexity through clear differentiation between the two information types and their delivery mechanisms.
Data Source
AI summary
A communication method and apparatus are provided, and relate to the field of wireless communication technologies, to resolve a problem in a conventional technology that communication quality during communication between a satellite and a communication apparatus cannot be ensured, and to ensure security of high-accuracy location information of the satellite. In the method, the communication apparatus may perform random access to the satellite based on first location information. The communication apparatus may perform uplink communication with the satellite based on obtained second location information. Accuracy of a location obtained based on the second location information is higher than accuracy of a location obtained based on the first location information. Based on this solution, required accuracy of location information of the satellite is different.