CQI-Guided Downlink Waveforms for Wireless Energy Harvesting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication networks face inefficiencies in energy harvesting, particularly in downlink energy harvesting, due to waveform designs not optimized for energy transfer, leading to insufficient energy transfer within a reasonable time frame for IoT devices and other wireless devices.
Innovation Solution
The implementation of optimized waveform designs and resource dedication mechanisms, such as RB-based, RE-based, and overlaid EH signal designs, to enhance energy harvesting efficiency by dedicating specific resources for energy transfer and tuning energy harvesting components to maximize energy harvesting and minimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional waveform designs are used for downlink transmission, then communication compatibility is maintained, but energy harvesting efficiency is insufficient
Solution Approach 1:
The patent changes the waveform parameters from conventional communication waveforms to energy-optimized waveforms with specific characteristics (constant envelope, high peak-to-average power ratio) that maximize rectification efficiency in energy harvesting devices while maintaining downlink transmission functionality
Solution Approach 2:
The patent dedicates specific resource blocks and resource elements locally optimized for energy harvesting purposes, creating specialized regions in the time-frequency grid that provide enhanced energy transfer characteristics without compromising overall system communication performance
2Duration of action of stationary object
If energy harvesting is enabled in downlink, then IoT device battery life is extended, but dedicated energy transfer resources are required
Solution Approach 1:
The patent segments the downlink resource grid into distinct resource blocks and resource elements, with specific segments dedicated to energy harvesting purposes. This segmentation allows independent optimization of energy transfer resources while maintaining separate communication resources, simplifying overall resource management
Solution Approach 2:
The patent enables downlink signals to serve dual purposes: conventional communication functions and energy harvesting functions. The same downlink transmission infrastructure is used for both information transfer and energy transfer, reducing the need for separate dedicated infrastructure and lowering overall system complexity
3Power
If waveform is optimized for energy transfer, then energy harvesting performance is improved, but communication signal characteristics may be compromised
Solution Approach 1:
The patent dynamically adjusts waveform characteristics and resource allocation based on channel conditions and energy harvesting requirements. The system can adaptively switch between different waveform types and modify resource dedication levels to maintain both energy transfer efficiency and signal reliability under varying operational conditions
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 ensures a meaningful level of energy transfer within a certain period, improving the operational efficiency and battery life of IoT devices and other wireless devices by optimizing energy harvesting processes in wireless communication networks.
Implementation Method 1
energy harvesting efficiency by dedicating specific resources for energy transfer and tuning energy harvesting components to maximize energy harvesting
Data Source
AI summary
A method implemented in a wireless transmit/receive unit (WTRU) for wireless communications includes receiving a signal sequence from a base station (BS) and generating a channel quality indicator (CQI) indication based on the signal, transmitting the CQI indication to the BS, receiving a first control message from the BS comprising configuration information, wherein the configuration information includes information elements for configuring CQI subgroups, determining a CQI subgroup identifier (ID) based on the information elements included in the received first control message, and transmitting an energy harvesting feedback using at least one resource associated with the CQI subgroup ID.