Multi-port Channelized OLT Architecture for EPON Area Reduction
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Solution Overview
Problem
Conventional Ethernet Passive Optical Network (EPON) Optical Line Terminals (OLTs) occupy large physical space and consume significant power, limiting their efficiency and scalability in high-capacity communication networks.
Innovation Solution
A multi-port, channelized OLT architecture that reduces the physical area and power consumption by implementing a quad 10 Gbps/1 Gbps MAC port with channelization techniques, allowing for efficient data processing and bandwidth allocation across multiple ports, and supporting various speed configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional EPON OLT architecture is used, then data processing capability is sufficient, but physical area occupied is large and power consumption is high
Solution Approach 1:
The patent combines multiple MAC ports (1G and 10G) into a single integrated device with shared resources including switch fabric, buffer memory, and control logic. This consolidation allows the OLT to process multiple data streams simultaneously while occupying significantly less physical space than conventional separate port implementations.
Solution Approach 2:
The OLT device is designed with multi-functional capabilities to handle both 1G and 10G Ethernet traffic through a unified architecture. The switch fabric and buffer resources can dynamically allocate bandwidth across different port types and traffic priorities, enabling a single device to replace multiple specialized components.
2Use of energy by moving object
If conventional EPON OLT architecture is used, then data processing capability is sufficient, but power consumption is significant
Solution Approach 1:
By merging multiple MAC processing functions into a single integrated device with shared resources, the patent eliminates redundant power-consuming components. The shared switch fabric, buffer memory, and control logic serve all ports simultaneously, reducing total power consumption compared to conventional architectures where each port has dedicated resources.
Solution Approach 2:
The patent implements dynamic bandwidth allocation and resource provisioning that can adapt power consumption levels based on actual traffic demands. The device can scale its processing capacity and resource allocation according to load conditions, optimizing the balance between power consumption and data processing capability.
3Area of moving object
If multi-port channelized architecture is implemented, then area reduction is achieved, but device complexity increases
Solution Approach 1:
The patent segments the OLT functionality into distinct modular components including separate MAC layers for 1G and 10G ports, a shared switch fabric, buffer memory regions, and control logic. This segmentation allows each component to be optimized independently while maintaining overall system integration, managing complexity through structured modularity.
Solution Approach 2:
The switch fabric acts as an intermediary component that mediates between multiple MAC ports and the network interface. It provides a standardized interface and resource allocation mechanism that simplifies the interaction between different port types and the core processing logic, reducing overall system complexity.
Data Source
AI summary
A method and system for channelizing a Passive Optical Network (PON) Media Access Controller (MAC) includes increasing a clock rate of each of one or more PON MAC(s) to create communication lanes each comprising a plurality of N channels. The PONs are channelized according to NX, where N equals a number of ports supported by the MAC and X equals a designated operating PON MAC clocking rate allowing for leveraging of existing Passive Optical Network (PON) infrastructures to provide a more power efficient and physically smaller MAC layer for OLTs.