Backscatter Timing Signaling for Synchronized Energy Harvesting Links
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Solution Overview
Problem
In wireless communication systems, energy harvesting devices such as RFID tags lack synchronization with energy transfer devices regarding the timing of backscattering signals, leading to increased complexity and reduced reliability in communication throughput.
Innovation Solution
The energy transfer device transmits timing information to the energy harvesting device via a signaling message, indicating when to begin backscattering, allowing the device to apply a backscattering function to the received wireless signal, thereby synchronizing the backscattering operation with the signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If energy harvesting devices perform backscattering without timing synchronization, then the devices can operate independently without complex coordination, but the communication reliability and throughput are reduced
Solution Approach 1:
The energy transfer device transmits timing information to the energy harvesting device in advance via a signaling message, allowing the harvesting device to prepare and synchronize its backscattering operation with the upcoming signal transmission, thereby improving communication reliability without requiring complex real-time coordination
Solution Approach 2:
The system uses signaling messages to convey timing information from the energy transfer device to the energy harvesting device, creating a feedback mechanism that enables synchronized backscattering operations and improves communication reliability through coordinated timing
2Ease of operation
If energy harvesting devices perform backscattering without timing synchronization, then device operation is simplified, but processing complexity increases
Solution Approach 1:
Timing information is provided in advance through signaling messages, allowing energy harvesting devices to autonomously synchronize their backscattering operations without complex real-time processing or coordination, thus maintaining operational simplicity while reducing processing complexity
3Productivity
If backscattering timing is not synchronized with signal transmission, then devices can operate autonomously, but communication throughput is reduced
Solution Approach 1:
The energy transfer device transmits timing information before signal transmission occurs, enabling the energy harvesting device to synchronize its backscattering operation with the signal transmission timing, thereby improving communication throughput through efficient resource utilization without requiring complex continuous coordination
Data Source
AI summary
Methods, systems, and devices for wireless communication are described. In some examples, an energy transfer device may indicate timing information for backscattering a signal. The energy transfer device may transmit, to an energy harvesting device, a message including timing information that indicates when the energy harvesting device is to begin backscattering of a wireless signal. The energy transfer device may transmit the wireless signal. The energy harvesting device may monitor for and receive the wireless signal based on the message. The energy harvesting device may transmit a backscattered signal based on application of a backscattering function to the wireless signal in accordance with the timing information.