AIoT Reader Coverage Extension Using Backscatter Relay

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

There is a need for methods to facilitate communication with Internet of Things (IoT) devices in low or no-energy scenarios, such as inventory tracking, by integrating them into larger communications networks like cellular networks.

Innovation Solution

Implementing a system where a reader sends a signal to IoT devices, which respond, and the reader configures to send the response to a network, utilizing backscattering communication and AIoT service-specific paging to extend coverage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If backscattering communication is used for AIoT devices, then energy consumption is reduced, but communication coverage is limited

Engineering Contradiction:

Improveenergy consumptionVSAvoidcommunication coverage

Core Design Contradiction:

Use of energy by moving objectVSArea of stationary object

Solution Approach 1:

The patent introduces a reader device as an intermediary between AIoT tags and the network. The reader receives signals from tags using backscattering communication and forwards them to the network, extending the effective coverage area without requiring tags to consume energy for direct long-distance communication.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The communication system is segmented into three components: AIoT tags (energy-constrained), readers (coverage-extending intermediaries), and the network. This segmentation allows tags to maintain low energy consumption while readers handle the coverage extension function.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If reader coverage is extended to reach more AIoT devices, then network integration is improved, but system complexity increases

Engineering Contradiction:

Improvenetwork integrationVSAvoidsystem complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The reader device is designed with multi-functionality, serving as both a signal receiver for backscattering communication and a network interface device. This universal design integrates coverage extension and network connectivity functions into a single component, managing system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system enables AIoT devices to communicate without requiring complex onboard electronics or power management for transmission. The tags passively reflect signals, and the reader handles all active communication functions, allowing tags to serve themselves with minimal complexity.

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables effective communication with IoT devices in low or no-energy environments by extending reader coverage and facilitating integration into cellular networks.

Implementation Method 1

utilizing backscattering communication

Methodology Applied

Scientific EffectBackscattering: Scattering

Data Source

PatentUS20260046943A1Methods for reader coverage extension for aiot communication

Publication Date: 2026.02.12 INTERDIGITAL PATENT HOLDINGS INC

AI summary

One or more devices, methods, and/or systems may be designed to implement communication with ambient internet of things (AIoT) devices in low or no-energy scenarios. For example, a reader may send a signal to one or more AIoT devices, then at least one of the one or more AIoT devices may response. The reader may be configured such that it can send the response of the at least one AIoT device to a network.