Backscatter Reader DTX Timing for Lower Power Energy Transfer

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Solution Overview

Problem

In backscatter communication systems, reader devices need to continuously transmit signals to provide energy for backscatter devices, leading to high power consumption.

Innovation Solution

Implementing a discontinuous transmission method using a target DTX configuration to send signals intermittently, allowing energy collection by backscatter devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the reader device continuously transmits signals to provide energy for the backscatter device, then the backscatter device can maintain continuous operation and signal transmission, but the reader device consumes relatively large power

Engineering Contradiction:

Improvecontinuous operation capabilityVSAvoidreader device power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements discontinuous transmission by dividing time into periodic intervals with on-duration and off-duration periods. During on-duration, the reader transmits signals for energy collection; during off-duration, transmission is suspended to save power. This periodic action pattern allows the system to balance between providing sufficient energy for reliable backscatter device operation and reducing reader device power consumption through intermittent transmission.

Inventive Principle:

Principle #19Periodic action

2Use of energy by moving object

If the reader device uses discontinuous transmission to reduce power consumption, then the reader device power consumption is reduced, but the backscatter device may not accumulate sufficient energy for continuous operation

Engineering Contradiction:

Improvereader device power consumptionVSAvoidbackscatter device operation continuity

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent dynamically adjusts the DTX configuration parameters including on-duration length, off-duration length, and cyclic patterns based on system conditions and requirements. This dynamic adjustment allows optimization of energy collection opportunities during on-duration periods while controlling power savings during off-duration periods, thereby balancing reader power consumption reduction with sufficient energy accumulation for reliable backscatter device operation.

Inventive Principle:

Principle #15Dynamics

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 in reader devices while enabling efficient energy collection and signal transmission by backscatter devices.

Implementation Method 1

Backscatter, as a passive communication technology, allows devices to complete signal transmission under passive conditions by changing characteristics of received ambient radio frequency signals

Methodology Applied

Scientific EffectBackscatter:

Implementation Method 2

the backscatter device obtains energy from the signal to send its own information

Methodology Applied

Scientific EffectEnergy harvesting from electromagnetic signals:

Data Source

PatentUS12610426B2Discontinuous transmission method, signal sending and processing method, and related device

Publication Date: 2026.04.21 VIVO MOBILE COMM CO LTD

AI summary

This application discloses a discontinuous transmission method, a signal sending and processing method, and a related device. The method includes: sending, by a first device, a first signal based on a target discontinuous transmission DTX configuration, where the first signal is used for energy collection by a second device.