Optical Transport Network Slice Container Bandwidth Allocation
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Solution Overview
Problem
Optical transport networks (OTNs) face inefficiencies due to fragmented bandwidth utilization, which affects network flexibility and service deployment, particularly with small-bandwidth links going unused.
Innovation Solution
A data transmission method that determines total bandwidth for slice containers based on a reference unit, allocates these containers across multiple links based on bandwidth ratios, and uses sequence and link identifiers to optimize utilization, ensuring efficient distribution and restoration of data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If virtual container concatenation is used at 1.24416 Gbps granularity, then service encapsulation and transmission are enabled, but small-bandwidth fragments cannot be utilized
Solution Approach 1:
The patent divides the data stream into multiple slice containers with independent bandwidth allocation, allowing fine-grained utilization of bandwidth fragments. Each slice container can be independently allocated to different links based on actual bandwidth needs, resolving the contradiction between service encapsulation capability and bandwidth utilization efficiency.
2Reliability
If fixed minimum container bandwidth of 1.24416 Gbps is enforced, then standard compliance is maintained, but link bandwidth utilization is reduced
Solution Approach 1:
The patent implements dynamic bandwidth allocation where the minimum container bandwidth is no longer fixed but can be adjusted based on actual service requirements and available link resources. This dynamic approach allows the system to comply with standards while optimizing bandwidth utilization by allocating only the necessary bandwidth to each slice container.
3Adaptability or versatility
If bandwidth fragments are created in OTN, then flexible service deployment is enabled, but network utilization is affected
Solution Approach 1:
The patent merges multiple slice containers across different links into a unified transmission system, allowing efficient utilization of bandwidth fragments. By combining the allocation decisions for multiple containers and considering overall link resources, the system achieves both service deployment flexibility and high network utilization.
Data Source
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AI summary
This application provides a data transmission method and apparatus. The method is applied to an optical transport network, and the method includes: determining total bandwidth of N slice containers based on a reference unit, where the reference unit is minimum bandwidth of a service of transmitting data, the total bandwidth of the N slice containers is an integer multiple of the reference unit, each slice container includes slice data, the slice data is data obtained after slice processing is performed on the data, and N is an integer greater than or equal to 2; determining, based on the total bandwidth of the N slice containers and an available link resource, M links for carrying the N slice containers, where M is an integer greater than or equal to 1; and adding the N slice containers to the M links, to send the data to a receive end. Correspondingly, a corresponding apparatus is further provided. According to this application, bandwidth utilization of the optical transport network can be effectively improved.