Access Point USB Power-Pin Transmission for Time-Sensitive Signals
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Solution Overview
Problem
Existing communication devices operating at the same frequency interfere with each other and require time-sensitive signal transmission that is not efficiently supported by traditional serial data paths, leading to uncertain and high latency in TSN protocols.
Innovation Solution
Modulating time-sensitive signals using power pins instead of serial data pins, with a modulator at the access point and a demodulator at the USB dongle device, allowing real-time transmission and demodulation without involving higher layers, thus ensuring fixed and low latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If time-sensitive signals are transmitted through traditional serial data paths, then communication devices can operate at the same frequency, but latency becomes uncertain and high
Solution Approach 1:
The patent replaces the traditional serial data path (software/protocol layer) with a physical layer power pin transmission mechanism. By modulating time-sensitive signals onto power pins and using a dedicated power pin receiver, the system eliminates serial data processing delays and achieves deterministic sub-microsecond latency while maintaining reliable operation at the same frequency
Solution Approach 2:
The patent segments the USB interface functionality by dedicatedating power pins specifically for time-sensitive signal transmission, separating this function from general power supply and serial data communication. This segmentation allows independent optimization of the power pin path for low-latency TSS delivery without interference from other USB transactions
2Productivity
If different communication devices operate at the same frequency, then they can communicate efficiently, but interference between devices increases
Solution Approach 1:
The patent introduces a time-sensitive signal as an intermediary control mechanism that coordinates communication between devices operating at the same frequency. This TSS acts as a mediator to manage transmission timing and prevent interference, allowing multiple devices to share the frequency band efficiently without mutual disruption
3Adaptability or versatility
If serial data paths are used for TSS transmission, then existing USB interface can be utilized, but higher layer processing introduces uncertain delay
Solution Approach 1:
The patent extracts the time-sensitive signal transmission function from the serial data path and places it directly at the physical layer through power pins. This extraction removes TSS transmission from MAC layer or higher layer processing, eliminating protocol overhead and software delay while maintaining USB interface compatibility through the existing power pin infrastructure
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
Achieves sub-microsecond latency and precise synchronization between communication devices, reducing interference and meeting the stringent requirements of time-sensitive networks.
Implementation Method 1
a modulator (111) configured to modulate the time-sensitive signal (TSS) and two power voltages to produce a modulated signal
Implementation Method 2
a demodulator (121) configured to demodulate the modulated signal to obtain the original time-sensitive signal (TSS)
Data Source
AI summary
Implementations of the present disclosure relate to a system for transmitting time-sensitive signals between an access point (AP) and a universal serial bus (USB) dongle device inserted into the AP. The AP is configured to generate a time-sensitive signal and comprises a modulator configured to obtain the TSS and two power voltages and modulate the TSS with the two power voltages to generate a modulated TSS. The USB dongle device operates at the same frequency as the AP and comprises a demodulator for demodulating the modulated TSS to obtain the demodulated TSS, wherein the modulated TSS is transmitted via a power supply pin at the USB interface of the AP and a power reception pin of the USB dongle device. In this manner, the delay of the demodulated TSS relative to the original TSS can be low, fixed, and measurable.