Multi-Channel Data Fragmentation for PON Bandwidth Allocation
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Solution Overview
Problem
In passive optical networks, there is a lack of effective solutions for setting bandwidths for multiple channels, leading to low data transmission efficiency when an optical network unit (ONU) supports data transmission on multiple channels.
Innovation Solution
The ONU fragments data into multiple pieces and distributes them across channels based on allocated uplink bandwidths, using a serial number for transmission order, and the optical line terminal (OLT) allocates bandwidths according to the total data amount, ensuring synchronized data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ONU transmits data on multiple wavelength channels simultaneously, then the data transmission rate increases, but the bandwidth allocation becomes complex and inefficient
Solution Approach 1:
The patent segments the data into multiple data packets and distributes them across multiple wavelength channels. Each channel is independently managed with specific bandwidth allocation, transforming the complex multi-channel transmission problem into manageable segmented units that can be handled separately while maintaining overall efficiency
Solution Approach 2:
The patent implements dynamic bandwidth allocation where the OLT adjusts the bandwidth of each wavelength channel based on real-time transmission needs and channel conditions. This dynamic adjustment mechanism allows the system to adapt to varying data transmission requirements while maintaining optimal performance across multiple channels
2Ease of operation
If the ONU reports data on only one channel, then the system is simple to operate, but the data transmission efficiency is reduced when multiple channels are supported
Solution Approach 1:
The patent introduces the OLT as an intermediary that centralizes the bandwidth allocation and channel management functions. The ONU simply transmits data packets on multiple channels without needing to complexly manage bandwidth allocation itself, while the OLT handles the sophisticated allocation decisions, thus maintaining operational simplicity at the ONU while enabling efficient multi-channel transmission
Solution Approach 2:
The OLT is designed with multi-functional capabilities to handle bandwidth allocation, channel management, and data packet reassembly across multiple wavelength channels. This universal functionality at the OLT allows the system to maintain simplicity at the ONU level while achieving high transmission efficiency through centralized intelligent management
3Quantity of substance
If data is transmitted on multiple channels without coordinated bandwidth allocation, then the transmission capacity increases, but the data synchronization and order are compromised
Solution Approach 1:
The patent implements a feedback mechanism where the OLT monitors the transmission status on each wavelength channel and dynamically adjusts bandwidth allocation based on real-time channel conditions and data packet arrival patterns. This feedback loop ensures that data packets are transmitted in an organized manner across multiple channels while maintaining synchronization and proper reassembly order at the receiving end
Data Source
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AI summary
The embodiments of the present invention provide a data sending and receiving method and device, OLT, and ONU, said data sending method comprising: an ONU fragments to-be-sent data needing to be sent on a plurality of channels to which said ONU is bound to obtain a plurality of fragmented data; according to the OLT being an uplink bandwidth allocated on the plurality of channels, the ONU distributes the plurality of fragmented data to the plurality of channels; said uplink bandwidth is a bandwidth allocated to each of the plurality of channels by the OLT according to the total amount of data of the data to be sent by the ONU; by means of the plurality of channels, the ONU sends the plurality of fragmented data to the OLT.