RF Power Signaling for Zero-Power Terminal Coverage Extension
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing low-power communication technologies for IoT devices face challenges in efficiently powering zero-power terminals over long distances and in various network scenarios, particularly in supporting zero-power communication systems with limited network coverage and flexibility.
Innovation Solution
The method involves a network device sending indication information to a power supply device to configure and transmit a power supply signal to a zero-power terminal, using RF power harvesting and back scattering communication, enabling wireless power supply through a power supply device, which can be flexibly deployed to enhance coverage and adapt to dynamic communication requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If battery-powered low-power communication devices are used, then communication functionality is achieved, but device weight, volume, and maintenance cost increase
Solution Approach 1:
The patent extracts and removes the battery component from the communication device, transforming it from a battery-powered device to a passive RFID device. This extraction eliminates the weight, volume, and maintenance issues associated with batteries while maintaining communication functionality through electromagnetic field coupling between reader and tag devices.
Solution Approach 2:
The passive RFID tag device obtains power autonomously from the electromagnetic field generated by the reader device during communication. The tag's antenna harvests electromagnetic energy to power its internal circuitry temporarily, enabling self-powered operation without external battery intervention.
2Use of energy by moving object
If battery-powered low-power communication devices are used, then communication functionality is achieved, but device complexity and maintenance cost increase
Solution Approach 1:
The patent removes the battery and associated power management circuitry from the device, significantly simplifying the overall system architecture. The passive RFID tag contains only minimal components (antenna, IC chip) without complex power supply systems, reducing both device complexity and maintenance requirements.
3Length of stationary object
If wireless power supply is implemented, then coverage distance is improved, but system complexity increases
Solution Approach 1:
The patent introduces an electromagnetic field as an intermediary carrier between the reader and tag devices. The reader generates an electromagnetic field that extends over a coverage area, and tags within this field receive power and communicate data through the same field, enabling extended coverage without direct physical contact or complex wiring.
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
This approach significantly improves the coverage distance and flexibility of zero-power communication systems by efficiently supplying power to zero-power terminals, reducing the need for battery-powered devices and minimizing power consumption, while maintaining low maintenance costs.
Implementation Method 1
a power supply device 30 configured to receive the first indication information and transmit the power supply signal to the zero-power terminal 20 wirelessly
Implementation Method 2
using RF power harvesting and back scattering communication
Implementation Method 3
using RF power harvesting and back scattering communication
Data Source
AI summary
The present application relates to the technical field of communications. Provided are an information transmission method and a device. The method includes: a network device sending first indication information to an energy supply device, wherein the first indication information is used for indicating a configuration related to an energy supply signal, and the energy supply signal is used for supplying energy to a zero-power terminal.