Dynamic Optical Channel Bonding Adjustment in PON Systems
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Solution Overview
Problem
The bonding of multiple physical channels in PON systems leads to significant energy consumption due to the fixed nature of channel bonding, which is not efficiently managed by existing technologies.
Innovation Solution
A method where an Optical Line Terminal (OLT) and Optical Network Unit (ONU) cooperate to adjust channel bonding based on reported capability parameters and service applications or data transmission states, allowing flexible bonding of optical channels, including changing the number of bonded channels, wavelengths, and uplink/downlink rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple physical channels are bonded to increase bandwidth, then the bandwidth and network capacity are improved, but the energy consumption increases significantly
Solution Approach 1:
The patent implements dynamic channel bonding adjustment where the OLT can modify the number of bonded channels based on real-time traffic conditions and user demands. The system transitions from static channel bonding to dynamic adjustment, allowing the network to optimize between bandwidth and energy consumption by activating only the necessary number of channels at any given time.
Solution Approach 2:
The patent changes the parameter of channel bonding configuration by allowing the OLT to adjust the number of bonded channels as a variable parameter. Instead of fixed channel bonding, the system can modify this parameter based on traffic demands, service applications, and energy efficiency requirements, thereby resolving the contradiction between bandwidth and energy consumption.
2Productivity
If the number of bonded channels is increased to meet user bandwidth demands, then the service capacity is improved, but the device complexity and management difficulty increase
Solution Approach 1:
The patent implements a feedback mechanism where the OLT receives channel bonding capability parameters reported by ONUs and uses this information to make intelligent decisions about channel bonding configuration. The OLT also monitors traffic conditions and service applications, using this feedback to dynamically adjust the number of bonded channels, thereby reducing management complexity while maintaining service capacity.
Solution Approach 2:
The OLT is designed with multi-functional capabilities to handle channel bonding management, including receiving capability parameters, determining optimal bonding configurations, and sending control information. This centralized multi-functional approach simplifies the overall system architecture by consolidating management functions in the OLT rather than requiring complex distributed management.
3Loss of energy
If channel bonding is adjusted dynamically based on traffic conditions, then the energy efficiency is improved, but the control complexity and signaling overhead increase
Solution Approach 1:
The patent implements preliminary action by having the ONU report its channel bonding capability parameters in advance during registration or configuration phases. The OLT uses this pre-provided information to pre-determine optimal bonding configurations, reducing the need for complex real-time calculations and signaling during actual traffic conditions.
Data Source
AI summary
A channel adjustment method, apparatus and system. The method includes: an optical line terminal (OLT) receives a channel bonding capability parameter reported by an optical network unit (ONU) and supported by the ONU; the OLT determines a channel bonding capability parameter of a to-be-bonded channel of the ONU according to the channel bonding capability parameter, a serving application of the ONU and/or a data transmission state; and the OLT sends, to the ONU, first bonding control information carrying the channel bonding capability parameter of the to-be-bonded channel of the ONU and used for instructing the ONU to adjust the bonded channel.