Encrypted Radio Broadcast Control for Large IoT Device Fleets

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Solution Overview

Problem

Existing digital radio broadcasting technologies lack efficient methods for one-way communication and control of multiple IoT devices using radio broadcast signals, limiting their functionality in controlling and managing large networks of devices.

Innovation Solution

A backend system that includes a network cloud server and radio broadcast automation equipment, which processes encrypted messages from client applications and transmits them via radio broadcast signals to IoT devices, enabling one-way control and data transmission using hybrid or digital-only radio formats.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If digital radio broadcasting technology is used to transmit data to multiple devices, then the ability to simultaneously transmit audio and data is improved, but the capability for one-way communication and control of IoT devices is insufficient

Engineering Contradiction:

Improvecapability for one-way communication and controlVSAvoidnumber of devices controlled

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent applies universality by enabling digital radio broadcast signals to serve multiple functions: traditional audio broadcasting, data transmission, and IoT device control. The system allows a single broadcast infrastructure to control multiple IoT devices simultaneously through encrypted messages embedded in the radio signals, making the broadcasting system universal across different application domains.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent applies segmentation by dividing the control functionality into specific message types embedded within the broadcast signal. Different portions of the broadcast data stream carry different types of control information for different devices, allowing simultaneous targeted control of multiple devices through a single broadcast transmission.

Inventive Principle:

Principle #1Segmentation

2Reliability

If encrypted messages are transmitted via radio broadcast signals to control IoT devices, then security is improved, but system complexity increases

Engineering Contradiction:

Improvesecurity of message transmissionVSAvoidcomplexity of backend system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies the intermediary principle by introducing a backend system that acts as a mediator between the message source and IoT devices. This backend system handles the complex tasks of message encryption, formatting, and injection into the broadcast signal, while the IoT devices themselves remain relatively simple receivers that decrypt and execute commands, thus distributing complexity appropriately.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies copying by using the existing digital radio broadcast infrastructure as a copy of traditional broadcasting technology for a new purpose. Instead of building a completely new communication system, the invention copies and adapts the proven broadcast signal structure, adding encryption and control message capabilities while leveraging the existing transmission network.

Inventive Principle:

Principle #26Copying

3Area of stationary object

If radio broadcast signals are used for device control, then wide geographical coverage is improved, but precision in targeting specific devices decreases

Engineering Contradiction:

Improvegeographical coverage areaVSAvoidprecision in device targeting

Core Design Contradiction:

Area of stationary objectVSMeasurement precision

Solution Approach 1:

The patent applies local quality by embedding device-specific identifiers and encrypted control messages within the broadcast signal structure. While the broadcast covers a wide geographical area, each receiving device can identify whether the message is intended for it through local decryption and verification, thus achieving both wide coverage and precise targeting simultaneously.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies parameter changes by modifying the broadcast signal to include variable parameters such as device identifiers, message types, and encrypted payloads. These parameter changes allow the system to maintain constant wide geographical coverage while dynamically adjusting which specific devices receive and process control messages based on their unique parameters.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12587837B2Secure broadcast from one to many devices

Publication Date: 2026.03.24 IBIQUITY DIGITAL CORP

AI summary

A method of controlling operation of an end device using a one-way radio broadcast includes sending an encrypted message from a client application of a computing device to a first network server, sending the encrypted message from the first network server to a second server included with radio broadcast automation equipment, transmitting the encrypted message in a radio broadcast signal using one or more radio broadcast transmitters, receiving the radio broadcast signal at an end device, and decrypting the encrypted message using the end device. The encrypted message includes control information to control operation of the end device.