AP Switching for Mobile Robots via Path-Based MAC Configuration

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Solution Overview

Problem

Existing AP switching methods for mobile robots in wireless networks are prone to frequent and unstable connections due to signal strength instabilities, requiring complex threshold settings and leading to network interruptions.

Innovation Solution

An AP switching method based on path settings, where APs are installed with overlapping coverage areas, signal strengths are recorded and strongest APs are determined, and MAC addresses are configured for seamless switching without threshold settings, ensuring stable connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If signal strength threshold switching is used, then network connection can be maintained, but frequent switching occurs due to signal instabilities

Engineering Contradiction:
Improvenetwork connection stabilityVSAvoidAP switching frequency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary path planning and pre-configures the sequence of APs to be connected based on the robot's movement trajectory. By determining the optimal AP connection sequence in advance and configuring MAC addresses for each path segment, the system eliminates the need for real-time signal strength monitoring and threshold-based switching decisions, thereby preventing frequent switching while maintaining reliable connections.

Inventive Principle:
Principle #10Preliminary action

2Extent of automation

If signal strength threshold is set, then connection switching can be automated, but operational difficulty increases due to complex threshold requirements

Engineering Contradiction:
Improveautomatic connection switchingVSAvoidthreshold setting complexity
Core Design Contradiction:
Extent of automationVSEase of operation

Solution Approach 1:

The system automatically discovers and configures the optimal AP connection sequence based on the robot's predefined movement path. The path planning module autonomously determines which APs to connect to at each location and configures the corresponding MAC addresses without requiring manual threshold setting or user intervention. This self-configuring approach maintains full automation while eliminating operational complexity.

Inventive Principle:
Principle #25Self-service

3Reliability

If multiple APs are below threshold simultaneously, then network connection is lost, but threshold setting requirements become more stringent

Engineering Contradiction:
Improvenetwork connection continuityVSAvoidthreshold configuration complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system pre-determines the optimal AP connection sequence along the robot's movement path and configures MAC addresses for each segment before operation begins. This eliminates the need for continuous threshold monitoring and automatic switching decisions, ensuring that the robot always connects to the pre-configured AP with the strongest signal at each location, thereby maintaining continuous network connection without complex threshold configurations.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS10425842B2Access point roaming method of wireless network for mobile robots based on path setting
Publication Date: 2019.09.24 ZHEJIANG GUOZI ROBOT TECH
  • US10425842B2 patent drawing

AI summary

The present invention discloses a AP switching method for mobile robots based on path setting, including the following steps: install APs in the application environments of mobile robots; control the mobile robots to move along established routes, record the signal strengths of each of the APs on each of the paths of the mobile robots, and determine the AP with the strongest signal strength on each path; configure the MAC addresses of the APs to be connected on each path whereon the mobile robots will move; the mobile robots monitor continuously whether the AP that is connected at the moment coincides with the AP configured for the current path, if not, then switch to the configured AP directly. The present invention can avoid effectively the problem of switching APs excessively frequently, the method is simple and effective, without the need for setting thresholds for signal strengths, and it can decrease uncertainty effectively, which is valuable in the application environments of mobile robots.