Mobile Wireless Relay Routing for Layout-Change Coverage
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Solution Overview
Problem
Existing wireless communication systems face challenges in maintaining optimal coverage due to layout changes indoors, requiring frequent site surveys and adjustments of access points to avoid coverage holes and interferences, which are cumbersome and costly.
Innovation Solution
A traveling apparatus with a first and second radio wave transmitter-receptor, a communication controller, and a travel unit that adjusts its route based on radio wave intensity thresholds and a layout map to maintain optimal wireless communication, eliminating the need for manual site surveys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired LAN cables are used for communication, then communication quality is high, but layout flexibility is reduced
Solution Approach 1:
The patent replaces the mechanical wired LAN cable system with a wireless communication system using radio waves. This substitution eliminates the physical constraints of cables while maintaining communication functionality, allowing devices to move freely without being tethered by wires.
Solution Approach 2:
The patent introduces a traveling apparatus with adjustable radio wave transmitters that can dynamically reposition themselves to maintain optimal communication coverage. This dynamic adaptation allows the system to respond to layout changes automatically, providing both wireless flexibility and reliable communication quality.
2Reliability
If wireless system coverage is fixed using relays or mesh Wi-Fi, then coverage can be provided, but site survey and adjustment are required for layout changes
Solution Approach 1:
The traveling apparatus autonomously performs the function of site survey and adjustment. It independently detects radio wave intensity, determines optimal positions based on layout maps, and repositions itself without requiring manual intervention. This self-service capability eliminates the time-consuming site survey process while maintaining reliable wireless coverage.
Solution Approach 2:
The system implements feedback control by continuously monitoring radio wave intensity and using this information to adjust the position of the traveling apparatus. The apparatus receives feedback about coverage quality and automatically moves to optimize its position, eliminating the need for manual site surveys and adjustments when layouts change.
3Device complexity
If unpowered relay device is used to provide coverage, then device complexity is reduced, but handling indoors becomes difficult due to interference from reflected waves
Solution Approach 1:
The patent replaces the passive unpowered relay device with an active traveling apparatus equipped with powered radio wave transmitters and controllers. This substitution adds complexity to the device but significantly improves indoor communication reliability by enabling active signal generation and intelligent positioning to avoid interference from reflected waves.
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 apparatus dynamically adjusts to layout changes, ensuring consistent wireless coverage without manual intervention, reducing labor and costs associated with site surveys.
Implementation Method 1
a first radio wave transmitter-receptor that transmits and receives a radio wave to and from a first device, a second radio wave transmitter-receptor that transmits and receives a radio wave to and from a second device
Implementation Method 2
The travel controller determines a travel route of the travel unit based on a first radio wave intensity being an intensity of the radio wave transmitted and received between the first radio wave transmitter-receptor and the first device
Data Source
AI summary
A technique provides a coverage in response to any layout change. A travel controller in a traveling apparatus determines a travel route of a travel unit based on a first radio wave intensity being an intensity of a radio wave transmitted and received between a first radio wave transmitter-receptor and a first device, a first threshold, a second radio wave intensity being an intensity of a radio wave transmitted and received between a second radio wave transmitter-receptor and a second device, a second threshold, and a layout map showing a location of the first device and a location of the second device to maintain the first radio wave intensity at the first threshold or higher and to maintain the second radio wave intensity at the second threshold or higher. The travel controller controls travel of the travel unit based on the determined travel route.