SDBANS Controller for XGS-PON Transport Network Slicing
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Solution Overview
Problem
Current transport network infrastructure struggles to efficiently manage and coordinate the slicing of 5G services across radio access and core networks, leading to suboptimal end-to-end service delivery and increased operational complexity.
Innovation Solution
The implementation of software-defined, disaggregated combo-passive optical networking (SD-CPON) with a novel slicing mechanism called software-defined broadband access network slicing (SDBANS), which enables intelligent definition, mapping, allocation, monitoring, and reporting of transport network slices to optimize 5G service delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional transport network infrastructure is used to manage 5G service slicing, then basic connectivity is maintained, but service delivery efficiency deteriorates and operational complexity increases
Solution Approach 1:
The patent introduces a transport domain slice orchestrator as an intermediary component that mediates between access/core network slice orchestrators and the transport network. This orchestrator translates slicing requirements from different domains into transport network configurations, improving service delivery efficiency while managing operational complexity through centralized automation.
Solution Approach 2:
The system dynamically changes transport network parameters (bandwidth allocation, latency constraints, priority levels) based on service type and network conditions. By adjusting these parameters in response to slicing requirements, the system optimizes service delivery for different 5G use cases while maintaining manageable operations through automated parameter management.
2Ease of operation
If independent slicing management is implemented in radio access and core networks, then domain-specific control is improved, but end-to-end service coordination deteriorates
Solution Approach 1:
The patent implements a nested orchestration architecture where the transport domain slice orchestrator is embedded within the broader network slicing framework. Access and core network slice orchestrators operate at outer levels with domain-specific control, while the transport orchestrator operates at an inner level handling transport-specific configurations, enabling both independent domain control and coordinated end-to-end service delivery.
Solution Approach 2:
The system establishes feedback loops between transport domain slice orchestrator and access/core network slice orchestrators. The transport orchestrator monitors transport network performance and provides feedback to higher-level orchestrators, enabling dynamic adjustment of slicing configurations to maintain reliable end-to-end service delivery while preserving domain-specific operational autonomy.
3Productivity
If transport resources are allocated without intelligent slicing, then infrastructure utilization is simplified, but resource efficiency and service quality deteriorate
Solution Approach 1:
The patent implements dynamic resource allocation where transport network slices are created, modified, and terminated based on real-time service requirements and network conditions. The transport domain slice orchestrator continuously adjusts bandwidth allocation and resource distribution, maximizing resource utilization efficiency while managing slicing complexity through automated dynamic configuration rather than static manual management.
Data Source
AI summary
Disclosed are an SDBANS controller and associated orchestration system configured to implement scalable transport network slicing in an XGS-PON. Accordingly, the orchestration system configures the SDBANS controller for different regions and maps TN NSSI ID information to an OLT port of an SD-CPON OLT. The OLT port is allocated by the SDBANS controller.