Multi-Carrier Optical Link Allocation for Network Service QoS
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Solution Overview
Problem
Current network service transmission methods, such as FlexEthernet, fail to ensure quality of service (QoS) by not considering differences in latency and bit error rates between physical ports and varying requirements of network services, leading to incomplete service quality assurance.
Innovation Solution
A transmission control method and apparatus that negotiates operational modes and detects quality of services for each link before service start, groups network services based on their QoS requirements, and allocates links and operational modes to ensure smooth service delivery, taking into account throughput, latency, and bit error rate requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If FlexEthernet is used to slice and map network services onto multiple physical ports based on throughput requirements, then throughput matching is improved, but quality of service assurance deteriorates because latency and bit error rate differences are not considered
Solution Approach 1:
The patent applies local quality by detecting and evaluating specific quality attributes (latency, bit error rate) for each physical port individually, then matching network services to ports based on their specific QoS requirements. This ensures that each service is allocated to a port with appropriate local characteristics rather than treating all ports uniformly.
Solution Approach 2:
The patent changes the allocation parameters from solely throughput-based to multi-parameter including latency and bit error rate. By detecting these additional parameters for each physical port and incorporating them into the allocation decision, the system achieves comprehensive QoS assurance while maintaining throughput matching.
2Ease of operation
If physical ports are allocated based solely on throughput rates, then allocation simplicity is improved, but service quality deterioration occurs because different transmission performances are ignored
Solution Approach 1:
The patent performs preliminary detection of quality attributes (latency, bit error rate) for all physical ports before network service allocation. This advance knowledge allows the allocation process to consider multiple QoS parameters without significantly increasing complexity, as the detection is performed once beforehand rather than during each allocation decision.
Data Source
AI summary
A transmission control method and apparatus for network services and controller. The transmission control method for network services includes: negotiating, before start of the network services, operational modes supported by each of links, and detecting quality of services in the operational modes supported by each of the links; grouping all network services to be transmitted according to requirements of the network services on quality of services and the quality of services in the operational modes supported by each of the links, and allocating links and operational modes for each of the groups; and designating a link for each of the network services in the groups according to the links and operational modes allocated for each of the groups. Hence, abilities of transmission quality detection and adjustment of a multi-carrier optical communication system may be used to satisfy quality requirements of different network services.