UFS Device Status Transmission via AFC Frame
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Solution Overview
Problem
Existing UFS devices face challenges in quickly transmitting status information to hosts, leading to delayed recognition and resolution of issues, which affects reliability.
Innovation Solution
The UFS device collects status information, including temperature, voltage, communication layer details, and command transmission hold requests, and transmits it to the host through an AFC frame, enabling real-time monitoring and quicker issue detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If status information is transmitted through conventional response UPIU, then the transmission process is simple, but the transmission speed is slow and real-time monitoring is not achieved
Solution Approach 1:
The patent segments the status information transmission into a dedicated AFC frame structure separate from conventional response UPIU. The AFC frame is specifically designed for status information transmission, while response UPIU handles command responses. This segmentation allows optimized transmission paths for status information, improving speed without requiring complete protocol redesign.
Solution Approach 2:
The patent introduces an intermediary AFC frame structure that mediates between the UFS device and host for status information transmission. This intermediary structure enables efficient status communication without directly modifying the core command response mechanism, thus improving transmission speed while maintaining protocol simplicity through a dedicated intermediate layer.
2Reliability
If status information transmission is delayed, then the transmission protocol remains simple, but issue recognition and resolution are delayed affecting reliability
Solution Approach 1:
The patent implements continuous status information transmission through the AFC frame mechanism. Instead of periodic or event-driven transmission, the system maintains continuous status communication channels, ensuring the host always has access to current UFS device status. This continuous action eliminates transmission delays and enables immediate issue recognition, directly improving reliability without significant time loss.
Solution Approach 2:
The patent establishes a feedback mechanism where the UFS device continuously provides status information to the host through AFC frames. This feedback loop enables real-time monitoring of device conditions such as temperature and operational status, allowing the host to detect issues immediately and take corrective actions, thereby improving reliability while minimizing time loss through active status communication.
3Measurement precision
If comprehensive status information is collected and transmitted, then real-time monitoring capability is improved, but the data transmission overhead increases
Solution Approach 1:
The patent applies local quality by selectively transmitting only the most critical status information parameters through the AFC frame. Instead of transmitting all possible device data, the system focuses on essential parameters such as temperature, voltage, and operational status that directly impact reliability. This localized approach to data transmission maintains high monitoring precision for critical parameters while reducing overall data transmission overhead and energy consumption.
Data Source
AI summary
Embodiments of the present disclosure relate to an UFS device and an operating method thereof. According to the embodiments of the present disclosure, the UFS device may collect status information of the UFS device, create an Acknowledgement and Flow Control (AFC) frame including the collected status information, and transmit the AFC frame to a host performing communication with the UFS device.