Window-Mounted Wi-Fi Gateway Optical Coupling for Indoor Coverage

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Solution Overview

Problem

Existing mobile network internet services experience degradation in indoor environments due to radio signal attenuation by building structures, and conventional RF repeaters either degrade indoor signals or cause interference in outdoor environments.

Innovation Solution

A window-mounted Wi-Fi gateway system with paired outdoor and indoor units that communicate via optical transmission through the windowpane, using aligned optical and wireless power couplers to extend indoor coverage without interfering with outdoor signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If outdoor RF repeaters are deployed to amplify radio signals, then indoor signal strength is improved, but outdoor signal interference increases and reception degrades

Engineering Contradiction:
Improveindoor signal strengthVSAvoidoutdoor signal interference
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The system divides the RF signal processing function into two separate units: an outdoor unit that receives and processes RF signals, and an indoor unit that provides Wi-Fi coverage. These units are separated by a window/glass barrier, allowing the outdoor unit to operate without interfering with outdoor signals while the indoor unit delivers enhanced indoor coverage.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary optical communication channel through the window/glass barrier. The outdoor unit communicates with the indoor unit via optical signals (light) passing through the glass, which acts as an intermediary medium that transfers data without RF interference between the two units.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If RF repeaters are placed indoors to improve indoor coverage, then indoor signal availability is improved, but signal quality degrades due to amplifying poor-quality or noisy signals

Engineering Contradiction:
Improveindoor signal availabilityVSAvoidsignal quality
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The outdoor unit performs preliminary RF signal processing and conversion to optical signals before the signals enter the indoor environment. By converting RF signals to optical signals at the window boundary, the system ensures that only high-quality processed signals are introduced indoors, avoiding the problem of amplifying poor-quality signals.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If optical couplers and wireless power couplers are precisely aligned during manufacturing, then system functionality is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvesystem functionalityVSAvoidmanufacturing process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent incorporates self-aligning features in the coupling mechanisms between outdoor and indoor units. The optical couplers and wireless power couplers are designed with self-alignment capabilities that allow them to automatically adjust and align properly during installation without requiring complex manual adjustment procedures or specialized tools.

Inventive Principle:
Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system provides enhanced indoor network performance without degrading outdoor reception by aligning optical and wireless power couplers during manufacturing, ensuring proper installation without tools or training.

Implementation Method 1

The outdoor unit may be aligned with the indoor unit, such that the units may communicate with each other via an optical transmission through the windowpane

Methodology Applied
Scientific EffectOptical transmission: Light

Implementation Method 2

aligned optical and wireless power couplers

Methodology Applied
Scientific EffectWireless power transmission: Electromagnetic Induction

Data Source

PatentUS12587874B2Window mounted wireless gateway system fabrication process
Publication Date: 2026.03.24 T MOBILE US INC
  • US12587874B2 patent drawing
  • US12587874B2 patent drawing
  • US12587874B2 patent drawing

AI summary

A method for fabricating a window mounted Wi-Fi gateway system, where the method comprises orienting a transparent and substantially flat platform in a horizontal orientation, applying transparent sheet material to each side of the platform, placing first and second optical couplers (OC) perpendicularly on opposing sides of the transparent sheet material, placing a first form on first transparent sheet material, depositing a first stabilizer material within the first form, and turning the platform over a first time. The method further comprises placing a second form on second transparent sheet material wherein the first form and the second form are substantially aligned with each other, depositing a second stabilizer material within the first form, attaching wireless power coils to the second stabilizer material, turning the platform over a second time, attaching wireless power coils to the first stabilizer material, removing the transparent sheet material from the platform, and removing the forms.