FlexE Slot Negotiation via Unique Identifier
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Solution Overview
Problem
The existing Flexible Ethernet (FlexE) overhead frame slot negotiation mechanism is prone to service interruptions due to mistaken responses from the receive end, leading to inaccurate calendar switching and traffic disruptions.
Innovation Solution
A method that involves sending a first FlexE overhead frame requesting calendar switching, determining if the response is valid, and re-sending a request if the initial response is not acknowledged correctly, ensuring accurate slot negotiation by using indication information within the FlexE overhead frames to differentiate between request and response messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the existing FlexE overhead frame slot negotiation mechanism is used, then slot negotiation can be performed, but service interruptions occur due to mistaken responses from the receive end
Solution Approach 1:
The patent introduces a unique identifier field as an intermediary element in the FlexE overhead frame. This identifier acts as a mediator to distinguish between routine overhead frames and slot negotiation response frames, preventing the transmit end from mistakenly interpreting routine frames as negotiation responses, thereby eliminating service interruptions caused by incorrect calendar switching
Solution Approach 2:
The patent implements a feedback mechanism where the receive end includes a unique identifier in the response frame that corresponds to the request frame's identifier. This feedback loop ensures the transmit end can verify the authenticity of the response, improving measurement precision of response accuracy while maintaining service reliability
2Productivity
If the receive end sends routine overhead frames, then normal communication is maintained, but the transmit end may mistakenly interpret them as slot negotiation responses
Solution Approach 1:
The patent applies local quality by adding a distinctive unique identifier field specifically to slot negotiation response frames, while routine overhead frames maintain their original structure. This localized differentiation enables the transmit end to accurately identify frame types based on the presence or absence of this specific field, improving frame identification accuracy without affecting overall communication efficiency
Solution Approach 2:
The patent uses the unique identifier field as a distinguishing marker (analogous to color changes) that allows the transmit end to visually (digitally) differentiate between routine frames and negotiation responses. Frames with the unique identifier are recognized as valid responses, while those without are treated as routine traffic, eliminating misinterpretation
Data Source
AI summary
This application relates to a slot negotiation method and a device. The method includes: A transmitter sends a first FlexE overhead frame to a receiver, to request active/standby calendar switching. When the receiver is in a restart state, the receiver does not respond to the received first FlexE overhead frame. In addition, the RX sends a routine update second FlexE overhead frame to the transmitter. Determining that the second FlexE overhead frame is not a response to the first FlexE overhead frame, the transmitter sends a third FlexE overhead frame to request active/standby calendar switching again. According to the method in this application, incorrect calendar switching on the transmitter side caused by a mistaken response of the receiver can be avoided. This reduces the likelihood of a service interruption caused by the existing slot negotiation mechanism.