Selective Channel Control in Multi-Channel PONs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In multi-channel passive optical networks (PONs), transceiver-arrayed optical network units (ONUs) consume unnecessary power as multiple transceivers operate simultaneously, even when not actively transmitting or receiving, due to the lack of mechanisms for selective channel control.
Innovation Solution
The Optical Line Terminal (OLT) sends messages to ONUs with channel ID information, instructing individual transceivers to turn on or off, allowing for selective activation and deactivation of transceivers based on traffic levels and network operation, thereby conserving power by enabling or disabling specific transceivers as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transceivers operate simultaneously in ONUs, then network communication capacity is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic transceiver management where the OLT sends control messages to ONUs to selectively activate or deactivate specific transceivers based on real-time network conditions and traffic demands. This allows the system to transition from a static all-transceivers-on approach to a dynamic selective activation approach, resolving the contradiction between maintaining high communication capacity and reducing power consumption.
Solution Approach 2:
The patent applies local quality by enabling selective channel control at the individual transceiver level rather than controlling all transceivers uniformly. The OLT can instruct specific ONUs to activate only the transceivers needed for their current communication requirements, allowing each transceiver to have its own operational state (active or inactive) based on local network conditions, thus reducing overall power consumption while maintaining necessary communication capacity.
2Reliability
If all transceivers remain active in ONUs, then communication availability is improved, but unnecessary power consumption occurs
Solution Approach 1:
The patent changes the operational parameter of transceivers from a binary all-or-nothing state to a selective state controlled by channel ID messages from the OLT. The system monitors network conditions and dynamically adjusts which transceivers are active, changing parameters such as transceiver activation status based on actual communication needs, thereby eliminating unnecessary power consumption while maintaining communication availability when required.
Solution Approach 2:
The patent implements a feedback mechanism where the OLT monitors network traffic and communication demands, then sends control messages to ONUs to adjust transceiver activation states accordingly. This closed-loop control ensures that transceivers are activated only when needed for communication, maintaining reliability while avoiding unnecessary power consumption during periods of low or no traffic.
3Use of energy by moving object
If selective transceiver control is implemented, then power efficiency is improved, but system complexity increases
Solution Approach 1:
The patent segments the control function by introducing a dedicated control message structure (channel ID message) that specifically targets individual transceivers or groups of transceivers. This segmentation of control allows the OLT to manage transceiver activation in a structured, modular way, reducing the complexity burden by organizing control operations into discrete, manageable units rather than requiring complex holistic control of all transceivers simultaneously.
Data Source
Figure 1~2
Figure 3~4
Figure 5~7A
AI summary
An OLT comprises: a memory; a processor coupled to the memory and configured to: determine each of a plurality of channels associated with an ONU, select a first channel from among the channels, and generate a first message comprising at least one field instructing enablement or disablement of the first channel; and a transmitter coupled to the processor and configured to transmit the first message to the ONU. A method implemented in an OLT, the method comprises: determining each of a plurality of channels associated with an ONU; selecting a first channel from among the channels; generating a first message comprising at least one field instructing enablement or disablement of the first channel; and transmitting the first message to the ONU.