Shared Spectrum Control Between Terrestrial and Satellite Networks
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Solution Overview
Problem
The challenge of managing spectrum sharing between terrestrial and non-terrestrial networks, such as satellite networks, to ensure seamless connectivity and optimal resource utilization, particularly in Next Generation wireless networks like 5G NR, is not adequately addressed by existing technologies due to performance disparities and overlapping coverage areas.
Innovation Solution
A system and method for spectrum sharing between terrestrial and non-terrestrial networks that involves network devices managing radio spectrum usage based on non-terrestrial-to-terrestrial network information, including location, availability, and frequency data to coordinate frequency use between satellite and terrestrial networks, ensuring continuous end-device connectivity and efficient network resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If satellite networks use the same radio spectrum as terrestrial networks for coverage supplementation, then network coverage and connectivity are improved, but spectrum interference and resource conflicts occur
Solution Approach 1:
The patent implements dynamic spectrum sharing where terrestrial and satellite networks dynamically adjust their spectrum usage based on real-time conditions. The system allows flexible switching between terrestrial-only, satellite-only, and combined modes of operation, enabling the network to adapt to changing coverage requirements and interference conditions without fixed assignments
Solution Approach 2:
The patent applies local spectrum allocation where different geographic regions can use different spectrum configurations. Satellite networks can use shared spectrum in areas where terrestrial coverage is insufficient, while terrestrial networks maintain exclusive or prioritized access in areas with adequate coverage, creating location-specific spectrum quality
2Reliability
If terrestrial networks prioritize spectrum usage to prevent interference, then spectrum protection is improved, but network resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements periodic spectrum sharing cycles where terrestrial and satellite networks alternately access shared frequency resources. During designated time periods, one network type has priority access while the other uses alternative frequencies or remains dormant, creating a time-division multiplexed approach that balances protection and utilization
Solution Approach 2:
The system employs feedback mechanisms where networks monitor spectrum usage conditions, interference levels, and coverage gaps in real-time. Based on this feedback, the system dynamically adjusts spectrum allocation decisions, allowing terrestrial networks to temporarily yield spectrum resources when satellite coverage is needed and vice versa, optimizing both protection and utilization
Data Source
AI summary
A method, a device, and a non-transitory computer-readable storage medium are described in relation to a spectrum sharing between terrestrial and non-terrestrial networks service. The spectrum sharing between terrestrial and non-terrestrial networks service may intelligently manage radios of radio access network devices based on the coverage areas of non-terrestrial network devices and their shared frequency spectrum. The service may disable and enable the radios associated with the shared frequency spectrum based on time periods and coverage area factors. For example, the disablement may include the turning off the radios and the enablement may include the turning on of the radios.