Electronic Tag Communication via Network-Triggered Signals

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Solution Overview

Problem

Electronic tags face challenges in actively initiating communication due to limited energy harvesting, necessitating a reduction in power consumption to support battery-free operations.

Innovation Solution

A communication method and device that enter a first mode where they do not actively send information or initiate requests when idle or disconnected, instead responding to trigger signals from other devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If electronic tags actively initiate communication requests, then communication functionality is improved, but power consumption increases beyond available harvested energy

Engineering Contradiction:

Improvecommunication initiation capabilityVSAvoidpower consumption

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

Instead of the electronic tag actively initiating communication requests, the network device initiates communication by sending indication information to the electronic tag. This inversion of the communication initiation direction allows the tag to remain in a low-power state while still enabling bidirectional communication functionality.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The electronic tag uses harvested energy to maintain its operational state and respond to network-initiated communication requests without needing to actively initiate communications itself. The tag serves itself by leveraging ambient energy for responsive communication rather than active initiation.

Inventive Principle:

Principle #25Self-service

2Speed

If electronic tags continuously monitor for communication opportunities, then communication responsiveness is improved, but energy depletion occurs faster

Engineering Contradiction:

Improvecommunication responsivenessVSAvoidenergy depletion rate

Core Design Contradiction:

SpeedVSLoss of energy

Solution Approach 1:

The network device periodically sends indication information to the electronic tag to initiate communication. This periodic approach from the network side ensures the tag remains responsive to communications while avoiding continuous monitoring and energy expenditure by the tag itself.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The electronic tag provides feedback to the network device by responding to indication information received from the network. This feedback mechanism maintains communication responsiveness without requiring the tag to continuously initiate or monitor for communications, thereby reducing energy loss.

Inventive Principle:

Principle #23Feedback

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

Reduces power consumption by allowing electronic tags to communicate efficiently using ambient energy, enabling battery-free operation and supporting periodic updates or requests.

Implementation Method 1

Electronic tags can harvest energy from electromagnetic waves in space and power their load circuits using the harvested energy

Methodology Applied

Scientific EffectElectromagnetic energy harvesting: Electromagnetic Induction

Data Source

PatentUS20250294615A1Communication method and communication device

Publication Date: 2025.09.18 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

AI summary

A communication method and a communication device are provided. The method includes the following. A first device in a first mode communicates with a second device, where when the first device is in the first mode, the first device satisfies at least one of the following: the first device does not actively send information or initiate a communication request when the first device is in an idle state or disconnected from a network; or the first device sends information according to a trigger signal sent by the second device.