Wireless Power Band Sharing with Traffic-Aware Transmission Windows

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Solution Overview

Problem

Existing wireless power transmission systems face interference issues when operating in the same frequency band as data communication systems, leading to reduced performance or service denial.

Innovation Solution

Implementing a method that detects data traffic patterns and prioritizes wireless power transmission based on data communication profiles, suspends power transmission during high-priority data exchanges, and adjusts power levels to minimize interference, while maintaining Quality of Service (QoS) for both power and data communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If wireless power transmission and data communication share the same frequency band, then spectrum utilization is improved, but interference between the two services occurs reducing performance

Engineering Contradiction:

Improvespectrum utilizationVSAvoidservice performance

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system implements periodic time-division multiplexing where wireless power transmission and data communication are allocated specific time slots within repeating frames. Power transmission occurs during designated power slots while data communication occurs during data slots, creating a periodic pattern that allows both services to share the frequency band without continuous interference

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system dynamically adjusts the allocation of time slots between power transmission and data communication based on real-time service requirements. The base station can modify the duration and frequency of power transmission slots versus data communication slots to optimize performance for varying traffic conditions and power delivery needs

Inventive Principle:

Principle #15Dynamics

2Productivity

If wireless power transmission is continuously transmitted, then power delivery efficiency is improved, but interference with data communication increases

Engineering Contradiction:

Improvepower delivery efficiencyVSAvoidinterference with data communication

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

Wireless power transmission is organized into periodic bursts within time-division frames rather than continuous transmission. Power is transmitted during allocated power slots and suspended during data communication slots, creating intermittent periodic transmission that reduces interference while maintaining delivery efficiency through concentrated power bursts

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system transmits power at high levels during designated slots rather than maintaining continuous low-level transmission. This partial action approach concentrates power delivery into specific time periods, achieving efficient charging during active slots while minimizing interference during suspension periods

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If data communication is prioritized over power transmission, then data service quality is improved, but charging speed decreases

Engineering Contradiction:

Improvedata service qualityVSAvoidcharging speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system dynamically adjusts the proportion of time slots allocated to power transmission versus data communication based on service priorities and traffic conditions. When data quality requirements are high, more slots are allocated to communication; when charging speed is prioritized, more slots are allocated to power transmission, creating a flexible dynamic balance

Inventive Principle:

Principle #15Dynamics

4Object-affected harmful factors

If power transmission is suspended during data exchanges, then interference is reduced, but power delivery continuity is affected

Engineering Contradiction:

Improveinterference reductionVSAvoidpower delivery continuity

Core Design Contradiction:

Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

Power transmission is organized as periodic bursts within time-division frames, suspended during data slots and resumed in subsequent power slots. This periodic interruption reduces interference during data communication while maintaining overall power delivery through the repeating pattern of transmission bursts

Inventive Principle:

Principle #19Periodic action

Data Source

PatentEP3704800B1Systems and methods for managing coexistence of wireless-power signals and data signals operating in a same frequency band

Publication Date: 2024.04.03 ENERGOUS CORP

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AI summary

A method of wireless power transmission is performed at a wireless-power- transmitting device having one or more antennas configured to transmit wireless-power signals, one or more processors, and a wireless data transceiver. The method comprises detecting that a wireless-power-receiving device is located in proximity to the wireless-power-transmitting device; establishing a data-traffic profile associated with the wireless-power-receiving device, the data-traffic profile including identifications of data signals to be exchanged over a predetermined frequency band between the wireless-power-receiving device and the wireless-power-transmitting device using the wireless data transceiver, determining windows of time during which to transmit wireless-power signals over the predetermined frequency band to the wireless-power-receiving device based on the data-traffic profile; and at the determined windows of time, transmitting, by the one or more antennas, wireless-power signals over the predetermined frequency band to the wireless-power-receiving device.