Flexible Ethernet Bandwidth Multiplexing for Network Utilization
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Solution Overview
Problem
Time division multiplexing (TDM) technologies in SDH, PDH, and OTN networks lead to bandwidth wastage and low network utilization due to fixed bandwidth allocation for each service, preventing other services from sharing unused bandwidth.
Innovation Solution
A method that replaces target data blocks in a data block section with data blocks from multiple services, allowing for flexible use of idle bandwidth by indicating the multiplexing relationship and using a polling sequence or weighted polling sequence to determine service transmission, thereby improving network utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If TDM mechanism is introduced into Ethernet interface in FlexE, then services are strictly isolated from each other, but bandwidth resources are wasted and network utilization is low
Solution Approach 1:
The patent applies dynamics by making the bandwidth allocation flexible rather than fixed. The TDM mechanism is modified to allow dynamic sharing of bandwidth resources among multiple services. Specifically, the system divides the Ethernet interface into multiple virtual channels, where each service can dynamically access unused bandwidth from other services through a scheduling mechanism, thus improving network utilization while maintaining service isolation through virtual channel management.
Solution Approach 2:
The patent implements universality by creating a multi-functional bandwidth allocation system. The same physical bandwidth resource can be shared by multiple different services simultaneously through virtual channel multiplexing. The scheduling mechanism allows any service to utilize any unused bandwidth resource across different virtual channels, making the bandwidth allocation system universal and adaptable to various service requirements, thereby reducing bandwidth waste.
2Stability of the object's composition
If fixed bandwidth is configured for each service, then services are strictly isolated, but other services cannot share unused bandwidth
Solution Approach 1:
The patent applies segmentation by dividing the total bandwidth into multiple virtual channels, with each virtual channel assigned to a specific service. This segmentation maintains stable bandwidth allocation for each service within its virtual channel while allowing unused bandwidth in one virtual channel to be shared by other services through a scheduling mechanism. The segmentation approach ensures both service isolation and efficient resource utilization.
Solution Approach 2:
The patent implements parameter changes by modifying the bandwidth allocation parameters from fixed to flexible. The system maintains the stability of bandwidth allocation through virtual channel configuration but changes the utilization parameter to allow dynamic sharing. The scheduling mechanism adjusts bandwidth assignment in real-time based on actual service requirements, reducing bandwidth resource waste while maintaining allocation stability.
Data Source
AI summary
A method and an apparatus for transmitting service data are disclosed. In technical solutions of the present disclosure, when an exclusive service does not completely occupy a bandwidth resource allocated to the exclusive service, data transmission of at least two candidate services on an actually unused bandwidth is supported. In this way, a waste of bandwidth resources can be reduced and network utilization can be improved.


