Non-Terrestrial Terrestrial Wireless Relay System
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Solution Overview
Problem
Current methods for enhancing broadband area coverage using Non-Terrestrial Networks (NTN) have not been established, particularly for improving millimeter wave coverage, which can be more economical when combining HAPS and terrestrial networks but lacks a established method.
Innovation Solution
A wireless communication system is provided that includes a non-terrestrial device and a terrestrial device. The non-terrestrial device has a first control unit to establish a service link with a terminal and a feeder link with the terrestrial device, and a first communication unit to provide relay between the service links and feeder links. The terrestrial device has a second control unit to establish the feeder link with the non-terrestrial device and a fronthaul with a base station, and a second communication unit to convert signals between the fronthaul and feeder link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a terrestrial network is used to provide broadband service, then coverage area is limited, but infrastructure cost is reduced
Solution Approach 1:
The patent combines terrestrial base stations and non-terrestrial satellites into a unified communication network. The terrestrial base station handles local communications while the satellite provides broad area coverage, merging both systems to achieve extensive coverage without requiring dense terrestrial infrastructure throughout the entire service area.
Solution Approach 2:
The non-terrestrial satellite acts as an intermediary between users in remote areas and the core terrestrial network infrastructure. The satellite relays communication signals to and from the terrestrial network, enabling broadband access in areas where direct terrestrial infrastructure deployment would be prohibitively complex.
2Area of stationary object
If only non-terrestrial network is used to expand coverage, then service area is enhanced, but system complexity increases
Solution Approach 1:
The communication system is designed to support multiple functions through a single integrated architecture. The same satellite infrastructure supports both direct satellite-to-user communication and relay communication through terrestrial base stations, while the terrestrial base station serves both as a conventional base station and as an interface to the satellite network, reducing overall system complexity.
Solution Approach 2:
The communication network is segmented into independent terrestrial and non-terrestrial components that can operate autonomously or cooperatively. This segmentation allows each component to be optimized independently while maintaining overall system simplicity through modular integration, where the satellite handles broad coverage and the terrestrial network handles localized high-capacity communications.
3Area of stationary object
If terrestrial network infrastructure is densified to improve coverage, then coverage quality improves, but deployment cost increases
Solution Approach 1:
Instead of physically deploying terrestrial base stations throughout the entire service area, the system uses satellite copies of the network functionality. The satellite replicates base station functions in orbit, providing coverage to geographic areas where physical terrestrial infrastructure deployment would be cost-prohibitive while maintaining comparable service quality.
Solution Approach 2:
The system transitions from a two-dimensional terrestrial plane of infrastructure deployment to a three-dimensional architecture that utilizes orbital space. By moving the infrastructure from the Earth's surface to orbital altitude, the system achieves broad area coverage without the need for dense ground-based infrastructure, significantly reducing deployment costs while maintaining or improving coverage quality.
Data Source
AI summary
A wireless communication system includes: a non-terrestrial device and a terrestrial device. The non-terrestrial device includes: a first control unit configured to establish a service link with a terminal and establish a feeder link with the terrestrial device; and a first communication unit configured to provide a relay between the service link and the feeder link, and the terrestrial device includes: a second control unit configured to establish the feeder link with the non-terrestrial device and establish a fronthaul with a base station; and a second communication unit configured to provide conversion between a signal of the fronthaul and a signal of the feeder link.