Zero-Energy Air Interface Receiver for Idle-Mode Signal Detection
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Solution Overview
Problem
Conventional wireless communication systems face challenges in reducing power consumption during idle modes, as they rely on active components that consume significant energy for signal processing and maintenance tasks.
Innovation Solution
The implementation of zero-energy (ZE) receivers, which utilize passive RF components to process signals without an active power supply, allowing for energy harvesting from received RF waveforms to power the necessary circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If active components are used for signal processing in idle mode, then signal detection and processing capabilities are maintained, but power consumption increases significantly
Solution Approach 1:
The receiver is divided into two distinct parts: a passive zero-energy (ZE) receiver for basic signal detection and cell selection, and an active receiver for comprehensive signal processing. The ZE receiver handles idle mode tasks without power consumption, while the active receiver is only activated when needed, thus resolving the contradiction between maintaining signal detection capability and reducing power consumption.
Solution Approach 2:
The passive ZE receiver performs self-service by detecting signals and enabling cell selection without requiring any external power supply. It autonomously completes basic reception tasks using only the energy inherent in the received RF signals, eliminating the need for active power consumption during idle mode operations.
2Use of energy by moving object
If passive RF components are used for signal processing, then power consumption is reduced to near-zero, but signal processing capability is limited
Solution Approach 1:
The receiver architecture is segmented into a passive ZE receiver for basic detection and an active receiver for comprehensive processing. This segmentation allows the system to achieve near-zero power consumption for routine idle mode tasks while maintaining full signal processing capability when the active receiver is activated, thus resolving the contradiction between power reduction and capability maintenance.
Solution Approach 2:
The system dynamically switches between the passive ZE receiver and the active receiver based on operational requirements. During idle mode, the ZE receiver handles basic tasks with near-zero power consumption, while the active receiver is activated when enhanced signal processing is needed, providing adaptive versatility without continuous power consumption.
3Ease of operation
If active components are continuously powered for idle mode tasks, then essential tasks like cell selection can be performed, but battery life is reduced
Solution Approach 1:
The passive ZE receiver performs idle mode tasks such as cell selection and signal detection without consuming battery power. By using only the energy present in the received RF signals, it enables essential operations to be performed autonomously, thus extending battery life while maintaining ease of operation for critical functions.
Solution Approach 2:
The active receiver is activated periodically or on-demand rather than continuously, only when enhanced signal processing is required. This periodic activation pattern allows essential idle mode tasks to be performed by the power-free ZE receiver, significantly extending battery life while maintaining operational capability when needed.
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
ZE receivers enable near-zero power consumption in idle modes, extending battery life and improving energy efficiency by allowing devices to perform essential tasks like cell selection and signal detection without draining the battery.
Implementation Method 1
such a device, e.g., a WTRU, may harvest energy from the received RF waveform to run the (e.g., necessary, RF) circuitry to process signals
Data Source
AI summary
Methods, apparatus, systems, architectures and interfaces for method for energy harvesting (EH) performed by a wireless transmit/receive unit (WTRU) are provided. A method may include any of receiving information indicating EH receiver configuration information (EHRCI) including information indicating an EH priority of the WTRU; and on condition that the EH priority of the WTRU indicates that the WTRU is permitted to perform EH, performing the EH on signaling received via the EH receiver according to the EHRCI.