Lighting Fixture Millimeter-Wave Antenna Signal Containment

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Solution Overview

Problem

Existing WLAN networks in passenger planes and ships have limited access points, making it difficult to provide high-speed and large-capacity information distribution services to a large number of terminals while minimizing the risk of signal propagation outside the closed space.

Innovation Solution

A communication network system that incorporates lighting fixtures with millimeter-wave-band antennas to transmit and receive signals, acting as base stations within the closed space, thereby providing high-speed and large-capacity information distribution while controlling signal propagation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If ISM radio frequency bands (2.4 GHz and 5 GHz) are used for entertainment services, then the propagation distance is long and the number of base stations is small, but the risk of propagation to outside the aircraft or ship increases and sufficient transmission speeds cannot be realized

Engineering Contradiction:
Improvetransmission speedVSAvoidrisk of propagation to outside
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The patent changes the frequency parameter from ISM bands (2.4 GHz/5 GHz) to millimeter-wave bands (24 GHz or higher). This parameter change enables both high transmission speeds and confined propagation within the closed space, as millimeter waves have shorter wavelengths that are easier to contain and provide larger bandwidth for high-speed data transmission.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If existing WLAN networks with limited access points are used, then the system complexity is low, but the ability to provide high-speed and large-capacity information distribution to a large number of terminals is insufficient

Engineering Contradiction:
Improveinformation distribution capacityVSAvoidnumber of access points
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent makes lighting fixtures serve multiple functions: they provide both illumination and wireless communication capabilities. By integrating millimeter-wave antennas into existing lighting fixtures, the system gains multiple distributed access points without adding separate communication infrastructure, thereby increasing information distribution capacity while avoiding the complexity of deploying dedicated access point networks.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the lighting function and communication function into a single integrated system. The lighting fixture housing and structure are combined with millimeter-wave antennas, creating a unified device that performs both functions simultaneously, thus increasing network capacity without proportionally increasing system complexity.

Inventive Principle:
Principle #5Merging (Combining)

3Speed

If millimeter-wave-band antennas are integrated into lighting fixtures, then high-speed and large-capacity information distribution is achieved with confined signal propagation, but the device structure becomes more complex

Engineering Contradiction:
Improveinformation distribution speedVSAvoidlighting fixture structure
Core Design Contradiction:
SpeedVSDevice complexity

Solution Approach 1:

The patent combines millimeter-wave antennas with existing lighting fixtures, merging communication functionality into the lighting infrastructure. This integration approach increases information distribution speed while avoiding the need for separate communication devices, thereby limiting the increase in overall device complexity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The lighting fixtures are designed to perform multiple functions simultaneously: providing illumination and serving as communication access points with millimeter-wave antennas. This multi-functionality increases network performance without requiring additional dedicated communication hardware, thus controlling the increase in device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 effectively distributes high-speed information to multiple terminals within the closed space while preventing signal leakage outside, enhancing entertainment services in passenger transportation without the need for additional access points.

Implementation Method 1

an antenna that transmits and receives millimeter-wave-band communication signals to and from the terminals

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

a cover that allows light emitted by the light-emitting element to pass therethrough

Methodology Applied
Scientific EffectLight transmission: Light

Data Source

PatentUS11894874B2Communication network system and lighting fixture
Publication Date: 2024.02.06 MURATA MFG CO LTD
  • US11894874B2 patent drawing
  • US11894874B2 patent drawing
  • US11894874B2 patent drawing

AI summary

A communication network system is a communication network system that distributes information to a plurality of terminals inside a closed space. The communication network system includes a network server and a plurality of lighting fixtures each having an antenna that transmits and receives millimeter-wave-band communication signals to and from the terminals.