Spectrum Resource Management for Interference Control

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Solution Overview

Problem

In wireless communication systems with multiple levels of spectrum use authorities, managing interference and allocating spectrum resources effectively is challenging, particularly in ensuring that secondary systems do not exceed interference thresholds of primary systems, while also considering aggregation interference from multiple secondary systems.

Innovation Solution

A spectrum resource management device and method that determine available spectrum resources for target communication systems, adjust resource utilization to reduce interference, and update resources to prevent aggregation interference from exceeding higher authority thresholds, involving multiple spectrum resource management devices for coordinated spectrum utilization adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If secondary systems utilize spectrum resources of primary systems to increase available spectrum resources, then spectrum resource utilization is improved, but aggregation interference on primary systems may exceed interference thresholds

Engineering Contradiction:

Improvespectrum resource utilizationVSAvoidaggregation interference on primary system

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The spectrum resource management device continuously monitors the aggregation interference level on primary systems caused by secondary systems. When the total interference approaches or exceeds the interference threshold, the management device adjusts spectrum allocation dynamically by reducing available spectrum resources to secondary systems, thereby maintaining interference levels within acceptable ranges while maximizing spectrum utilization.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts the available spectrum resources for secondary systems based on real-time interference conditions. The spectrum resource management device modifies spectrum allocation in response to changing interference levels, primary system activity patterns, and secondary system demands, enabling adaptive optimization of both spectrum utilization and interference control.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If multiple secondary systems operate simultaneously to meet communication service demands, then service coverage is improved, but interference management complexity increases

Engineering Contradiction:

Improveservice coverageVSAvoidinterference management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent consolidates interference management functions into a unified spectrum resource management device that handles multiple secondary systems simultaneously. This centralized approach merges individual interference control tasks into a single coordinated system, reducing overall management complexity while enabling multiple secondary systems to operate with optimized spectrum allocations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The spectrum resource management device adjusts key parameters such as available spectrum resources, transmission power limits, and operating frequency ranges for secondary systems. By dynamically modifying these parameters based on aggregate interference levels and service requirements, the system manages complexity through parameter optimization rather than complex control logic.

Inventive Principle:

Principle #35Parameter changes

3Speed

If available spectrum resources for secondary systems are increased to meet high-speed communication requirements, then communication speed is improved, but interference thresholds of primary systems may be exceeded

Engineering Contradiction:

Improvecommunication speedVSAvoidinterference on primary system

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The system allocates spectrum resources to secondary systems up to the point where interference thresholds are approached but not exceeded. The spectrum resource management device intentionally limits available spectrum resources to secondary systems to partial levels that balance communication speed requirements with primary system protection, preventing excessive interference while maximizing usable spectrum.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9961557B2Spectrum resource management device and method

Publication Date: 2018.05.01 SONY GROUP CORP

AI summary

A spectrum resource management device: determines available spectrum resources of a target communication system, so that aggregation interference caused by the target communication system and a communication system with a low right against a communication system with a high right in a management area does not exceed an interference threshold of the communication system with a high right; reduces available spectrum resources of the communication system with a low right, so that the interference caused by the communication system with a low right against the target communication system does not exceed an interference threshold of the target communication system; and updates the available spectrum resources of the target communication system according to the reduced available spectrum resources of the communication system with a low right, so that the aggregation interference does not exceed the interference threshold of the communication system with a high right.