Resource Coordination Controller for Inter-System Interference

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Solution Overview

Problem

Inter-system interference occurs due to the terrestrial reuse of satellite frequencies by separate terrestrial and satellite networks, leading to inefficiencies in wireless communication systems, particularly in densely populated areas where satellite signals are blocked or do not penetrate effectively.

Innovation Solution

A resource coordination controller is implemented to manage the use of shared telecommunications resources, such as frequencies, between independent satellite and terrestrial wireless communication systems, coordinating the transmission and reception times to prevent overlap and minimize interference by using a Time Division Duplex (TDD) protocol or other protocols, ensuring that only one system uses the shared frequency at a given time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If terrestrial networks reuse satellite frequencies in densely populated areas, then system capacity and coverage are improved, but inter-system interference increases

Engineering Contradiction:

Improvesystem capacityVSAvoidinter-system interference

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent implements Time Division Duplex (TDD) protocols that periodically alternate between satellite and terrestrial network usage of shared frequencies. The system divides time into frames with specific time slots allocated to each network, creating periodic action patterns that prevent simultaneous transmission and reception conflicts while maintaining continuous system operation and capacity.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts frequency allocation and time slot configurations based on real-time network conditions, traffic demands, and interference levels. The TDD framework allows flexible reconfiguration of uplink/downlink time ratios and frequency assignments, enabling the system to adapt to changing conditions while managing inter-system interference and optimizing capacity utilization.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If separate terrestrial and satellite networks operate independently on shared frequencies, then system independence is maintained, but resource coordination efficiency decreases

Engineering Contradiction:

Improvesystem independenceVSAvoidresource coordination

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces coordination mechanisms that act as intermediaries between independent satellite and terrestrial networks. These mechanisms include standardized interfaces, signaling protocols, and coordination entities that enable autonomous networks to exchange necessary control information and coordinate frequency-time resource usage without compromising their operational independence or requiring full system integration.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Area of stationary object

If satellite signals are used in densely populated areas, then coverage is provided, but signal blockage and penetration issues occur

Engineering Contradiction:

Improvecoverage areaVSAvoidsignal penetration

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent merges satellite and terrestrial network operations into a hybrid system where both networks operate simultaneously on shared frequencies through coordinated TDD protocols. This combination allows the system to leverage satellite coverage for broad area service while terrestrial base stations provide reliable signal penetration in densely populated areas with building obstructions, achieving both wide coverage and high reliability.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8031646B2Systems, methods and devices for reusing spectrum of another operator

Publication Date: 2011.10.04 ATC TECHNOLOGIES LLC

AI summary

A system according to some embodiments includes a first transceiver configured to transmit downlink signals to, and to receive uplink signals from, a first plurality of mobile terminals in a geographic area using a telecommunications resource, and a resource coordination controller coupled to the first transceiver and configured to communicate with a second telecommunications system including a second transceiver configured to transmit downlink signals to, and receive uplink signals from, a second plurality of mobile terminals within the geographic area using the telecommunications resource. The resource coordination controller may be further configured to coordinate use of the telecommunications resource by the first transceiver and/or the first plurality of mobile terminals based on use of the telecommunications resource by the second transceiver and/or the second plurality of mobile terminals.