Mesh Network Mailbox Nodes for Intermittent IoT Messaging

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Solution Overview

Problem

Intermittent power availability in IoT devices complicates communication, as devices may not be accessible when messages are sent, leading to difficulties in establishing connections.

Innovation Solution

Implementing mailbox devices within IoT networks that act as intermediaries to store and deliver messages on behalf of intermittently powered devices, using a registration process to manage message delivery and prioritize urgent communications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If devices are intermittently powered to save energy, then energy consumption is reduced, but communication reliability deteriorates because devices may not be available when messages are sent

Engineering Contradiction:

Improveenergy consumptionVSAvoidcommunication reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent introduces mailbox devices as intermediaries in the mesh network that store messages intended for intermittently powered devices. When a device is unavailable, the mailbox device holds the message and delivers it when the device becomes available, thus maintaining communication reliability while allowing the device to remain powered off for energy savings.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If devices remain continuously available to ensure communication, then communication reliability is improved, but energy consumption increases

Engineering Contradiction:

Improvecommunication availabilityVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary actions by establishing mailbox devices in advance and registering them to receive messages on behalf of intermittently powered devices. This preliminary setup enables asynchronous communication without requiring the device to be continuously available, allowing the device to power down when not in use.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If messages are stored in queues for unavailable devices, then message delivery reliability is improved, but system complexity increases due to queue management

Engineering Contradiction:

Improvemessage delivery reliabilityVSAvoidqueue management complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the message storage and delivery functionality into the mailbox device, which is itself a node in the mesh network. This consolidation eliminates the need for separate queue management systems at the intermittently powered device, reducing overall system complexity while maintaining reliable message delivery through the mailbox intermediary.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250373580A1Asynchronous communication across nodes in a mesh network

Publication Date: 2025.12.04 SILICON LABORATORIES INC

AI summary

In one example, a method includes: receiving, in a second wireless device of a mesh network, a first message directed to a first wireless device of the mesh network, where the second wireless device is designated as a mailbox device for the first wireless device; determining whether the first wireless device is available; and in response to determining that the first wireless device is not available, storing the first message in a first queue of the second wireless device, the first queue associated with the first wireless device.