ONU Power Management for Network Slicing
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Solution Overview
Problem
Current power management in passive optical networks (PON) only allows for a single power management mode to be selected for all ONUs, limiting the ability to provide differentiated services through slicing, which is essential for efficient power saving and service differentiation.
Innovation Solution
A method and apparatus for setting and operating a power management mode for each slice in an ONU, using defined messages and protocols to discover and set up power management attributes and parameters for each slice, allowing for independent power management of transmitters and receivers for multiple virtual slices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single power management mode is selected for all ONUs, then the system operation is simplified, but the ability to provide differentiated services through slicing is limited
Solution Approach 1:
The patent segments the power management functionality by introducing slice-specific power management parameters (slice PM parameters) that can be independently configured for each slice. The OLT transmits different PM parameters to different ONUs based on their slice configurations, allowing each slice to have its own power management mode (cyclic sleep, doze, or watchful sleep mode) while maintaining a unified system architecture.
2Productivity
If power management is implemented for each slice, then service differentiation and power saving efficiency are enhanced, but the system complexity increases
Solution Approach 1:
The patent implements a universal power management framework where the existing PM mechanism is extended to support multiple slices. The OLT maintains a unified PM parameter database that stores PM parameters for multiple slices, and the existing PM message exchange protocol is enhanced to carry slice-specific parameters. This allows the system to provide differentiated power management for each slice while reusing the existing PM infrastructure, thereby limiting the increase in system complexity.
3Measurement precision
If slice-specific power management parameters are transmitted, then accurate power control for each slice is achieved, but the message overhead increases
Solution Approach 1:
The patent merges slice-specific PM parameters with existing PM message structures. Instead of creating separate message protocols for each slice, the invention integrates slice identifiers and PM parameters into the existing PM message format. The OLT transmits a set of PM parameters in a single PM message, where each parameter set is associated with a specific slice identifier, thereby reducing message overhead while maintaining accurate power control for each slice.
Data Source
AI summary
Provided are a power management method and apparatus of an ONU supporting a slicing function. A power management method performed by a power management apparatus of an ONU supporting a slicing function includes receiving a first message for discovering a power management attribute of an ONU including at least one slice from an optical line terminal (OLT), transmitting a second message including the power management attribute of the ONU to the OLT in response to the first message received, receiving a third message for setting up a power management parameter for each slice included in the ONU from the OLT, setting up the power management parameter for each slice included in the ONU based on the third message received, and transmitting a fourth message including a set up result of the power management parameter for each slice included in the ONU to the OLT.