Pulse Power Ethernet Links With Offset Pulses for Data Integrity
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Solution Overview
Problem
Conventional Power over Ethernet (PoE) and Power over Data Line (PoDL) systems are limited in power capacity, typically delivering up to 100 W, which is inadequate for many devices, and face interference issues during pulse power transitions that can corrupt data transmission.
Innovation Solution
The method involves transmitting data on two wire pairs carrying pulse power, with voltage pulses offset between pairs to provide continuous power, and controlling data transmission during pulse power transitions to prevent interference, using techniques such as suspending data, applying Forward Error Correction, and marking packets for error or discard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If pulse power transitions are used to deliver high power, then power delivery capacity is improved, but data transmission reliability deteriorates due to interference during transitions
Solution Approach 1:
The patent segments the transmission medium into separate pairs: one or more wire pairs dedicated to pulse power delivery and another wire pair dedicated to data transmission. This physical separation eliminates interference between power transitions and data signals, allowing high power delivery while maintaining data transmission reliability.
Solution Approach 2:
The patent introduces an intermediary mechanism (separate wire pair) to transfer data signals away from the pulse power transmission path. By using a dedicated data wire pair, the system mediates between the high-power pulse transitions and sensitive data signals, preventing direct interference while enabling both functions to operate simultaneously.
2Reliability
If data transmission is controlled during pulse power transitions, then data corruption is prevented, but transmission efficiency decreases
Solution Approach 1:
The patent extracts the data transmission function from the pulse power delivery system by allocating a separate wire pair exclusively for data. This extraction eliminates the need to suspend or control data transmission during power transitions, as the data signals physically remain on a different medium that is not affected by power switching events.
3Duration of action of stationary object
If voltage pulses are offset between wire pairs to provide continuous power, then power continuity is improved, but system complexity increases
Solution Approach 1:
The patent merges multiple wire pairs carrying offset voltage pulses to deliver continuous power. By combining the power delivery function across multiple pairs with different phase offsets, the system achieves continuous power delivery while keeping each individual pair relatively simple. The complexity is distributed across multiple standardized wire pairs rather than requiring a single complex transmission path.
Data Source
AI summary
In one embodiment, a method includes transmitting pulse power on two wire pairs, the pulse power comprising a plurality of high voltage pulses with the high voltage pulses on the wire pairs offset between the wire pairs to provide continuous power, performing low voltage fault detection on each of the wire pairs between the high voltage pulses, and transmitting data on at least one of the wire pairs during transmittal of the high voltage pulses. Data transmittal is suspended during the low voltage fault detection.