Overlapping Carrier Aggregation for Non-Standard Bandwidth Use

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Solution Overview

Problem

Existing wireless communication systems face inefficiencies due to unused bandwidth resulting from purchasing rights to specific standard bandwidths, leading to spectrum waste and suboptimal utilization of available spectrum resources.

Innovation Solution

Implementing intraband overlapping carrier aggregation, where component carriers overlap within the purchased bandwidth, allowing efficient use of all network resources without extending into neighboring networks, and managing signal transmission on specific carriers to avoid waste.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If standard bandwidth component carriers are used, then compliance with 3GPP standards is maintained, but unused bandwidth is wasted

Engineering Contradiction:

Improvespectrum efficiencyVSAvoidbandwidth flexibility

Core Design Contradiction:

Loss of energyVSAdaptability or versatility

Solution Approach 1:

The patent segments the purchased bandwidth into multiple standard-sized component carriers (e.g., two 10 MHz carriers from a 20 MHz purchase, or three 5 MHz carriers from a 15 MHz purchase). This segmentation allows the system to utilize standard 3GPP-compliant carrier widths while fully exploiting the available spectrum resources without waste

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements nested carrier aggregation where multiple component carriers are aggregated hierarchically. Standard-compliant component carriers are nested within the total purchased bandwidth, allowing the system to maintain standard interface compliance while achieving non-standard total bandwidth utilization through layered carrier aggregation

Inventive Principle:

Principle #7Nested doll (Nesting)

2Productivity

If carrier aggregation is implemented to increase bandwidth, then data rates are enhanced, but complexity of carrier management increases

Engineering Contradiction:

Improvedata rateVSAvoidcarrier aggregation complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent applies local quality by assigning different roles to different component carriers based on their characteristics and requirements. Primary carriers handle control signaling and synchronization, while secondary carriers focus on data transmission. This specialized allocation simplifies the management complexity by creating clear functional distinctions among aggregated carriers

Inventive Principle:

Principle #3Local quality

3Loss of energy

If overlapping frequency bands are used in carrier aggregation, then spectrum utilization is improved, but signal interference may increase

Engineering Contradiction:

Improvespectrum utilizationVSAvoidsignal interference

Core Design Contradiction:

Loss of energyVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and separates control signaling functions from data transmission functions by assigning them to different component carriers. Synchronization signals, system information, and control channels are extracted and placed exclusively on the primary carrier, while data transmission utilizes both primary and secondary carriers. This separation eliminates interference between control and data signals while maintaining overlapping frequency efficiency

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12445238B2Method and system for utilizing non-standard bandwidths using carrier aggregation for devices supporting standard bandwidths

Publication Date: 2025.10.14 DISH WIRELESS LLC

AI summary

A new radio base station establishes a first and a second component carrier in carrier aggregation. The first and second component carrier overlap each other. The base station transmits signaling and control information exclusively on the first component carrier. The base station transmits data packets on the first component carrier and on a non-overlapping portion of the second component carrier.