Sensor Wired Relay for Wireless Communication Reliability

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Solution Overview

Problem

Wireless communication networks face significant quality degradation due to RF interference, which causes communication messages to be dropped, especially voice messages, leading to jitter and poor communication quality.

Innovation Solution

A method is introduced where a sensor, located separately from access points, monitors communication messages and retransmits them via a wired medium when the number of retransmissions exceeds a predetermined threshold, ensuring that communication messages are delivered to the destination access point, thereby preventing message loss and improving network quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If communication messages are transmitted wirelessly through access points, then network coverage and mobility are improved, but message delivery reliability deteriorates due to RF interference

Engineering Contradiction:
Improvenetwork coverageVSAvoidmessage delivery reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a wired communication path as an intermediary medium between client stations and access points. When wireless transmission fails due to RF interference, the sensor captures the original message and forwards it through the wired medium, which acts as a mediator to ensure reliable delivery without compromising network coverage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The sensor continuously monitors wireless communication channels and prepares alternative transmission paths in advance. When message transmission failures are detected, the sensor has already captured and stored the original messages, ready to forward them through the wired medium, providing a cushioning effect against communication failures.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Ease of operation

If wireless transmission is used to maintain network flexibility, then ease of operation is improved, but communication quality deteriorates due to message dropping and jitter

Engineering Contradiction:
Improvenetwork flexibilityVSAvoidcommunication quality
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The wired communication path serves as an intermediary that preserves network flexibility while ensuring communication quality. The sensor captures messages via wireless transmission (maintaining flexibility) and forwards them through the wired medium (ensuring quality), eliminating message dropping and jitter without requiring physical changes to the network infrastructure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If multiple retransmission attempts are made over wireless channels, then message delivery reliability is improved, but loss of time increases due to repeated transmission failures

Engineering Contradiction:
Improvemessage delivery reliabilityVSAvoidretransmission time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The sensor captures and stores original messages in advance, creating a cushion of ready-to-forward messages. When wireless retransmission attempts fail, the sensor immediately forwards the pre-captured message through the wired medium, eliminating the need for repeated wireless retransmission attempts and reducing time loss.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent substitutes the wireless transmission mechanism with a wired transmission mechanism for message forwarding. The wired medium provides more reliable and faster transmission compared to repeated wireless attempts, replacing the mechanical retransmission process with a more efficient electronic forwarding process through the wired medium.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8488516B2Method for improving quality of communication in a communication network
Publication Date: 2013.07.16 SYMBOL TECHNOLOGIES LLC
  • US8488516B2 patent drawing
  • US8488516B2 patent drawing
  • US8488516B2 patent drawing

AI summary

A communication network comprises a plurality of access points, a plurality of stations wirelessly communicating with the plurality of access points and at least one sensor located at a different location from each of the plurality of access points for improving communication quality in the communication network. The sensor in the communication network senses a communication message transmitted from a source station and destined for a destination access point on a wireless communication channel in the communication network. The sensor further determines a number of retransmissions of the communication message from the source station. The sensor, upon determining that the determined number of retransmissions of the communication message is at least equal to a predetermined threshold, forwards the communication message to the destination access point through the wired medium.