Cooperative Wireless Power Transmission Phase Synchronization
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Solution Overview
Problem
Current wireless charging methods restrict the mobility of terminal devices as they require direct connection to a charger, and there is a need for a more flexible method using general base stations and wireless personal area networks for wireless power transmission.
Innovation Solution
A method and device for cooperative wireless power transmission in a wireless communication system, where multiple nodes (APs, Femto BSs, relay stations, WPANs, macro BSs) synchronize their power transmission signals and transmit them to a terminal, allowing for phase-synchronized power delivery even when the terminal is in an idle mode, with the ability to request and prioritize power transmission based on battery state and mode switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple nodes transmit power transmission signals to a terminal simultaneously, then wireless charging coverage and efficiency are improved, but phase synchronization between nodes becomes complex and difficult to maintain
Solution Approach 1:
The patent combines multiple nodes (access points, base stations, relay stations) into a cooperative wireless charging system where they jointly transmit power signals to terminals. This merging of multiple transmission sources expands the wireless charging coverage area while maintaining coordinated operation through standardized protocols.
Solution Approach 2:
The patent implements feedback mechanisms where nodes exchange information about their transmission states, terminal positions, and channel conditions. This feedback enables dynamic phase synchronization adjustment, allowing the system to maintain coherent power transmission across multiple nodes despite changes in the wireless environment.
2Productivity
If power transmission signals are transmitted during terminal idle mode, then charging efficiency is improved, but coordination between data communication and power transmission becomes more difficult
Solution Approach 1:
The patent employs periodic action by identifying and utilizing terminal idle periods for power transmission. During these scheduled intervals when the terminal is not actively receiving data, power signals are transmitted to charge the battery, thereby improving charging efficiency without interfering with normal data communication operations.
Solution Approach 2:
The patent implements dynamic coordination between data communication and power transmission by adapting the power transmission schedule based on terminal state. The system dynamically switches between data transmission and power transmission modes, and can adjust transmission parameters based on real-time channel conditions and terminal battery status.
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
Enables effective wireless charging of terminal devices using a network of nodes, improving coverage and efficiency by matching phase synchronization and coordinating power transmission with data communication, allowing terminals to charge wirelessly over longer distances and in various modes.
Implementation Method 1
The electromagnetic generator 200 generates radio waves allowing the terminal 100 to generate induced current
Data Source
AI summary
Disclosed are a method and device for cooperatively sending and receiving power wirelessly. Wireless power charging coverage at the level of data signal transmission can be ensured by establishing one or more modes for transmitting, to a specific terminal, a power transmission signal from any of a plurality of nodes which is (are) not engaged in data transmission, and by matching the phase synchronization of the power transmission signal between the one or more nodes and then transmitting, to the specific terminal, a power transmission signal of which the phase synchronization has been matched by means of the one or more modes.