Communication Control Method for Secondary Spectrum Usage

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Solution Overview

Problem

There is no established procedure for starting secondary usage of a spectrum without causing a decrease in communication quality for primary usage services, which is essential for ensuring seamless coexistence of primary and secondary communication services.

Innovation Solution

A communication control method that involves acquiring data about the surrounding communication environment, determining the availability of secondary usage based on specific conditions, and permitting usage when these conditions are met, while ensuring that the secondary service does not interfere with the primary service. This includes sensing the environment, transmitting beacons, and evaluating the reliability of data to authorize secondary service usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If secondary usage of a spectrum is started without checking the surrounding communication environment, then the productivity of spectrum utilization is improved, but the reliability of primary communication service deteriorates due to potential interference

Engineering Contradiction:

Improvespectrum utilization efficiencyVSAvoidprimary communication service quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent applies preliminary action by requiring the determination device to sense and evaluate the communication environment before permitting secondary usage. The system checks whether primary services are present and assesses potential interference impacts in advance, only allowing secondary services to start when conditions are confirmed safe, thus preventing reliability issues before they occur

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where the determination device continuously monitors communication environment data, evaluates it against predetermined conditions, and adjusts permission decisions based on this feedback. The system uses communication history data and real-time sensing results to dynamically control whether secondary usage is permitted, ensuring primary service reliability is maintained

Inventive Principle:

Principle #23Feedback

2Reliability

If comprehensive environment sensing and evaluation procedures are implemented before secondary usage, then the reliability of primary communication service is improved, but the complexity of the system increases

Engineering Contradiction:

Improveprimary communication service qualityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the system into distinct functional components: a determination device that performs sensing and evaluation, and separate secondary usage devices that execute services. The determination process itself is segmented into acquiring communication environment data, evaluating against conditions, and making permission decisions. This modular structure manages complexity while maintaining reliability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary determination device that acts as a mediator between primary and secondary services. This intermediary device senses the environment, evaluates potential interference, and controls permission without requiring direct complex interactions between primary and secondary systems, thus simplifying overall system architecture while ensuring reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If data related to communication environment is acquired and evaluated before permitting secondary usage, then the reliability of secondary service operation is improved, but the time required to start secondary service increases

Engineering Contradiction:

Improvesecondary service operation stabilityVSAvoidservice startup time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by having the determination device acquire and evaluate communication environment data before secondary service startup. This pre-check ensures reliable operation by confirming no primary services are present, while the automated nature of the evaluation minimizes the time penalty

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces manual or mechanical checking procedures with automated electronic sensing and data evaluation systems. The determination device automatically acquires communication environment data, compares it against predetermined conditions, and makes permission decisions, significantly reducing the time required compared to manual assessment while maintaining high reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8923881B2Communication control method, communication device, and program

Publication Date: 2014.12.30 SONY GROUP CORP

AI summary

To start secondary use of a spectrum without causing an adverse effect on a communication service for primary usage, provided is a communication control method including the steps of acquiring data related to a communication environment surrounding a first communication device at the first communication device, determining that a second communication service using a part or whole of a spectrum assigned to a first communication service is available when the acquired data related to the communication environment satisfies a first condition, and permitting usage of the second communication service when the data related to the communication environment satisfies a second condition at the first communication device or a second communication device.