Repeater Device Signal Timing for Wireless Interference

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Solution Overview

Problem

Conventional wireless communication systems experience interference between repeater signals and response signals in bidirectional communication, leading to increased reply times and potential power issues in self-powered slave devices due to the need for transmission downtime between signal transmissions.

Innovation Solution

The system includes a repeater device that receives and transmits signals with individual identification information, allowing simultaneous transmission of repeater signals to both the slave and master devices, reducing the need for transmission downtime and enabling faster signal reception in self-powered slave devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the repeater device transmits a repeater signal in response to a slave signal, then the signal can be relayed to the master device, but the repeater signal interferes with the response signal transmitted simultaneously from the master device

Engineering Contradiction:

Improvesignal transmission reliabilityVSAvoidsignal interference

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The repeater device transmits the repeater signal to the slave device before the master device transmits the response signal. This preliminary action ensures that the slave device receives the signal first and can acknowledge receipt, while the master device's response signal is transmitted afterward, avoiding simultaneous transmission interference.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The communication process is divided into separate time slots: first the repeater signal is transmitted from the repeater device to the slave device, then the response signal is transmitted from the master device to the repeater device. This temporal segmentation eliminates signal interference by ensuring only one device transmits at a time.

Inventive Principle:

Principle #1Segmentation

2Object-affected harmful factors

If transmission downtime is required between repeater signal and response signal transmissions, then signal interference is avoided, but the reply time increases

Engineering Contradiction:

Improvesignal interferenceVSAvoidreply time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The repeater device transmits the repeater signal as a preliminary action before the master device transmits the response signal. This eliminates the need for transmission downtime while maintaining signal interference avoidance, as the sequential transmission is naturally orchestrated without requiring idle time between operations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The communication process maintains continuous useful action by immediately transitioning from repeater signal transmission to response signal transmission without requiring transmission downtime. The slave device's acknowledgment and the master device's response are continuously processed, eliminating wasted time while preventing signal interference through proper sequencing.

Inventive Principle:

Principle #20Continuity of useful action

3Device complexity

If the slave device is self-powered without battery, then device complexity is reduced, but the device cannot sustain transmission operations due to power constraints

Engineering Contradiction:

Improvepower supply structureVSAvoidtransmission energy sustainability

Core Design Contradiction:

Device complexityVSUse of energy by moving object

Solution Approach 1:

The repeater device transmits the repeater signal as a preliminary action that enables the slave device to receive and acknowledge the signal before any power-intensive operations are required. This preliminary transmission allows the self-powered slave device to operate with minimal power consumption, sustaining transmission operations without requiring a battery.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The repeater device provides power management assistance to the self-powered slave device by handling the initial signal transmission and coordination. This self-service mechanism allows the slave device to operate without its own power supply infrastructure, as the repeater device manages the power-intensive transmission operations on its behalf.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20240129020A1Master device, slave device, repeater device, and wireless communication system

Publication Date: 2024.04.18 OMRON CORP

AI summary

A repeater device comprises: a repeater device receive unit that receives a slave signal transmitted wirelessly from a slave device and including first individual identification information; and a repeater device transmit unit that transmits a repeater signal including second individual identification information corresponding to the first individual identification information wirelessly to the slave device and a master device, based on the slave signal. The repeater device receive unit further receives a response signal responding to the repeater signal, transmitted wirelessly from the master device.