Daisy-Chained Remote OLTs with Hierarchical Bandwidth Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing passive optical networks (PON) face challenges in providing sufficient quality of service and capabilities to a large number of optical network terminals (ONTs) when a single remote optical line terminal (OLT) is insufficient, leading to data collisions and inefficiencies in bandwidth allocation.
Innovation Solution
Implementing a system that daisy chains multiple remote OLTs, each with separate data interfaces for passive and non-passive optical networks, and employs a hierarchical data management system to prioritize and allocate bandwidth based on service level agreements and committed information rates, using discovery protocols to determine logical relationships and optimize traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single remote OLT is used to serve multiple ONTs, then device complexity is reduced, but quality of service and bandwidth allocation efficiency deteriorate due to data collisions and insufficient capabilities
Solution Approach 1:
The system segments the OLT functionality by introducing multiple remote OLTs (first remote OLT and second remote OLT) that operate independently to serve different sets of ONTs. This segmentation eliminates data collisions and improves quality of service by distributing the service load across multiple devices rather than overloading a single OLT.
Solution Approach 2:
The patent introduces a hierarchical dimension to the network architecture by implementing a data hierarchy system where remote OLTs are organized in levels. This dimensional change allows for structured bandwidth allocation and priority management, enabling sophisticated quality of service control without increasing operational complexity at the access level.
2Reliability
If multiple remote OLTs are implemented to improve quality of service, then service capabilities are enhanced, but device complexity and network configuration difficulty increase
Solution Approach 1:
Each remote OLT is designed with universal functionality to independently manage multiple ONTs and participate in the hierarchical data structure. This multi-functionality allows any remote OLT to serve various roles (primary or secondary, higher or lower hierarchy level) without requiring specialized configurations, thereby managing complexity while maintaining enhanced service capabilities.
Solution Approach 2:
The discovery protocol implements a feedback mechanism where remote OLTs automatically detect and report their relationships within the hierarchical structure. This automated feedback system eliminates manual configuration complexity by allowing the network to self-organize, while still achieving the quality of service improvements provided by multiple hierarchical OLTs.
3Productivity
If hierarchical data management is implemented to optimize bandwidth allocation, then bandwidth allocation efficiency is improved, but data management complexity increases
Solution Approach 1:
The hierarchical data management system dynamically allocates bandwidth based on real-time network conditions, service level agreements, and committed information rates. This dynamic approach optimizes bandwidth allocation efficiency by automatically adjusting resource distribution without requiring complex static configurations, allowing the system to adapt to changing demands while maintaining manageable complexity.
Solution Approach 2:
The discovery protocol enables the network to self-configure and self-manage the hierarchical relationships between remote OLTs. This self-service capability reduces data management complexity by eliminating the need for manual hierarchical configuration, while the system still achieves optimized bandwidth allocation through automated hierarchy-based resource management.
Data Source
AI summary
A system supporting the daisy chaining of remote optical line terminals.