Coexistence Manager Frequency Channel Classification

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Solution Overview

Problem

Current communication systems lack an efficient method for managing frequency resources to enable coexistence and frequency sharing among multiple systems with different communication patterns, particularly when using available frequency bands from already used bands like the TV band, without interfering with primary incumbents.

Innovation Solution

A system and method that include a coexistence manager, coexistence enabler, and coexistence discovery and information server to classify channels and determine operating channels for multiple systems, allowing efficient sharing of available frequency bands by transmitting and receiving specific messages for registration, coexistence information, and channel allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple different systems use the available frequency band from TV band, then frequency resource utilization efficiency is improved, but interference with primary incumbent and system coexistence problems occur

Engineering Contradiction:

Improvefrequency resource utilization efficiencyVSAvoidinterference with primary incumbent

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary actions by detecting the presence of primary incumbents in TV band frequency resources before allowing secondary systems to access these bands. The coexistence manager proactively identifies available channels and classifies them before allocation, ensuring primary users are not interfered with while maximizing secondary system access opportunities.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A coexistence manager is introduced as an intermediary component between primary and secondary systems. This manager mediates frequency resource allocation by detecting primary incumbent presence, classifying available channels, and making allocation decisions that balance primary user protection with secondary system needs, thereby resolving the interference contradiction.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If multiple different systems use the available frequency band, then frequency resource utilization efficiency is improved, but coexistence management complexity increases

Engineering Contradiction:

Improvefrequency resource utilization efficiencyVSAvoidcoexistence management complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The coexistence manager segments the frequency band into multiple channels and classifies them based on primary incumbent detection results. By dividing the continuous spectrum into discrete, manageable channel units with different availability statuses, the system reduces the complexity of managing multiple systems across the entire band.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The coexistence manager performs multiple functions including primary incumbent detection, channel classification, availability determination, and allocation decision-making. By consolidating these diverse functions into a single multi-functional component, the system manages coexistence complexity more effectively than if each function were handled separately.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If channel classification is performed for all channels in the first frequency band, then accurate operating channel determination is improved, but processing time and computational resources increase

Engineering Contradiction:

Improveoperating channel determination accuracyVSAvoidchannel classification processing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

Instead of classifying all channels in the first frequency band, the system performs partial action by only classifying channels that are determined to be available based on primary incumbent detection. This selective classification approach maintains sufficient accuracy for operating channel determination while significantly reducing processing time and computational resources.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS8737207B2System and method for managing resource in communication system

Publication Date: 2014.05.27 ELECTRONICS & TELECOMM RES INST

AI summary

A system for managing resources in a communication system including systems, which do not have a permission for a first frequency band, includes coexistence managers configured to, when a frequency band available for the systems is searched from the first frequency band, manage the systems for coexistence and frequency sharing of the systems in the available frequency band; a coexistence enabler configured to transmit and receive information of the systems and information of the coexistence managers; and a coexistence discovery and information server configured to support control of the coexistence managers over the systems, wherein the coexistence managers transmit and receive predetermined messages to and from the coexistence discovery and information server and the coexistence enabler, perform channel classification for the first frequency band, and determine operating channels of the systems on the basis of the channel classification.