FlexO Frame Service Transmission Flexibility
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Solution Overview
Problem
The existing Optical Transport Network (OTN) with a fixed-rate interface lacks flexibility in service transmission due to a one-to-one mapping between OTUC client signals and FlexO frames, limiting interconnection capabilities.
Innovation Solution
A service transmission method that maps client signals to load subareas of FlexO frames, allowing flexible configuration of payload areas within each frame, using FlexO type, timeslot overhead, and signal mapping information to indicate transmission rates and signal distribution across multiple lanes, enabling flexible service transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a one-to-one mapping between OTUC client signals and FlexO frames is used, then the system structure is simple and easy to implement, but the service transmission flexibility is poor
Solution Approach 1:
The patent divides the payload area of each FlexO frame into multiple load subareas, and divides client signals into multiple signal groups. This segmentation allows multiple client signals to be mapped to different subareas within the same FlexO frame, breaking the one-to-one mapping constraint and enabling flexible service transmission while maintaining manageable system structure
Solution Approach 2:
The patent introduces universal mapping relationships where any client signal group can be mapped to any available load subarea through configuration. The timeslot overhead and signal mapping information provide universal indication mechanisms that work across different mapping scenarios, allowing the same FlexO frame structure to serve multiple service transmission purposes
2Adaptability or versatility
If multiple client signals are mapped to the same FlexO frame, then service transmission flexibility improves, but the complexity of frame structure and overhead information increases
Solution Approach 1:
By segmenting the payload area into load subareas and introducing timeslot overhead information for each subarea, the patent manages the complexity of mapping multiple client signals to the same FlexO frame. Each subarea has its own overhead indicating the mapped client signal, making the multi-signal mapping structure organized and manageable rather than chaotic
Solution Approach 2:
The patent introduces timeslot overhead and signal mapping information as intermediary elements that mediate between multiple client signals and the FlexO frame structure. These intermediaries carry indication information about which client signals are mapped to which subareas, simplifying the overall mapping relationship management and reducing the complexity burden
Data Source
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AI summary
Embodiments of the present invention disclose a service transmission method and a first transmission device, and the method includes: mapping n client signals with a rate of t to ms/t load subareas of m lanes of FlexO frames, where a payload area of each of the m lanes of FlexO frames is divided into s/t load subareas, and each lane of FlexO frame is transmitted by using a FlexO lane with a transmission rate of s; configuring FlexO type information, timeslot overhead information, and signal mapping information for each lane of FlexO frame; and transmitting the m lanes of FlexO frames to a second transmission device by using m FlexO lanes with the transmission rate of s, where the second transmission device is configured to parse, according to the FlexO type information, the timeslot overhead information, and the signal mapping information, the client signals carried in the ms/t load subareas. According to the embodiments of the present invention, service transmission flexibility is improved.