Wireless Communication Devices With Aggregated Interference Estimation

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Solution Overview

Problem

Existing dynamic spectrum access models, such as Embedded AFC, lack sufficient mechanisms to protect primary systems from interference, requiring direct communication between different service providers and raising security concerns due to varying timing in determining communication parameters.

Innovation Solution

A communication system where each communication device performs single interference estimation to ensure that the aggregated interference with a protection system does not exceed a limit value, allowing each device to independently determine frequencies without needing direct communication with other devices, thus enhancing security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If each access point independently determines communication parameters to enable flexible frequency selection, then adaptability improves, but protection of the primary system deteriorates due to insufficient interference control mechanisms

Engineering Contradiction:

Improvefrequency selection flexibilityVSAvoidprimary system protection

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The communication device performs single interference estimation with the primary system before executing wireless communication to predict potential interference. This preliminary assessment allows the device to adjust its communication parameters in advance to ensure that the sum of aggregated interference from multiple devices does not exceed the limit value, thereby protecting the primary system while maintaining frequency selection flexibility.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The device calculates its own interference estimation and compares it against the limit value of interference with the primary system. This feedback mechanism enables the device to autonomously adjust its communication parameters (such as transmission power or frequency selection) to ensure that the total aggregated interference remains within acceptable limits, resolving the contradiction between flexible parameter determination and primary system protection.

Inventive Principle:

Principle #23Feedback

2Reliability

If different service providers directly communicate to coordinate frequency usage, then interference control improves, but security deteriorates due to varying timing in determining communication parameters

Engineering Contradiction:

Improveinterference controlVSAvoidsecurity

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

Each communication device independently performs single interference estimation with the primary system and calculates its own interference contribution. The device autonomously determines whether to execute wireless communication based on whether the sum of aggregated interference exceeds the limit value. This self-service approach eliminates the need for direct communication between service providers, preventing security issues related to information exchange timing while maintaining effective interference control through individual device responsibility.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If communication devices exchange information to determine communication parameters, then coordination improves, but device complexity increases due to required communication protocols

Engineering Contradiction:

Improvecoordination efficiencyVSAvoidcommunication protocol requirements

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent extracts the interference estimation function from a centralized coordination system and assigns it to each individual communication device. Each device independently performs single interference estimation with the primary system and makes its own determination about whether to communicate. This extraction eliminates the need for complex inter-device communication protocols and coordination mechanisms, reducing device complexity while maintaining coordination efficiency through autonomous decision-making based on primary system protection requirements.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12464367B2Communication system, communication device, and information processing device

Publication Date: 2025.11.04 SONY GROUP CORP

AI summary

A communication system includes a plurality of communication devices that executes wireless communication using a frequency of a specific frequency band, and an information processing device that records information regarding interference of the plurality of communication devices with a protection system in the specific frequency band. The communication device executes single interference estimation on the protection system before executing the wireless communication to estimate interference of the wireless communication with the protection system. In addition, the communication device executes the wireless communication in a case where a sum of aggregated interference of the plurality of communication devices with the protection system before executing the single interference estimation obtained from the information and interference estimated by executing the single interference estimation does not exceed a limit value of interference with the protection system.