Remote PHY Device Core Device Reselection
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Solution Overview
Problem
Current DOCSIS specifications lack an effective method for a remote PHY device to switch or reselect a principal CCAP core device, leading to inflexible core device selection policies that cannot adapt to different scenarios, especially when the current principal core device fails or needs to be changed.
Innovation Solution
A method and remote device that receive configuration priorities from connected core devices, update these priorities, and reselect the principal core device based on updated settings in response to trigger conditions such as operator intervention or core device failure, using a unified framework for various reselection scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the remote PHY device stores all CCAP cores connected to it according to a certain order as specified in current DOCSIS specifications, then the device structure is simple and easy to implement, but the system lacks flexibility and adaptability when the principal core device needs to be switched or reselected
Solution Approach 1:
The patent applies preliminary action by having the remote device receive and store priority configurations for multiple core devices in advance, before any switchover is needed. When the current principal core device fails or needs to be changed, the remote device can immediately reselect a new principal core device based on the pre-stored priority information without needing complex real-time negotiation or selection algorithms, thus achieving high adaptability with relatively simple implementation.
2Reliability
If no effective technical solution is provided for reselecting the principal CCAP core, then the system maintains simplicity and follows current specifications, but service interruptions cannot be minimized and user experience deteriorates when core device failures occur
Solution Approach 1:
The patent implements preliminary action by pre-configuring priority information for multiple core devices at the remote device before any failure occurs. When the current principal core device fails, the remote device can immediately identify and connect to an alternative core device based on the pre-stored priority configuration, minimizing service interruption time and improving service continuity without requiring complex real-time decision-making.
3Adaptability or versatility
If the remote device uses a fixed order for storing CCAP cores as per current specifications, then the implementation is straightforward and consistent with existing standards, but the system cannot adapt to different scenarios such as load balancing or principal core device changes
Solution Approach 1:
The patent applies parameter changes by introducing a priority parameter that can be configured for each core device. Instead of using a fixed storage order, the remote device stores core devices with associated priority values. This allows the system to adapt to different scenarios (such as load balancing or failure recovery) by changing the priority parameters, while maintaining compatibility with existing DOCSIS specifications and avoiding major operational complexity.
Data Source
AI summary
Embodiments of the present disclosure provide a communication method, a remote device and a computer readable medium. In this method, a remote device receives from one of a plurality of core devices connected to the remote device, configuration indicating a priority of at least one of the plurality of core devices for serving as a principal core device of the remote device. The remote device updates priorities of the plurality of core devices for serving as the principal core device based on the configuration. In response to a trigger condition for a switchover being satisfied, the remote device reselects the principal core device of the remote device from the plurality of core devices based on the updated priorities. Embodiments of the present disclosure improve the process that a remote device reselects a principal core device.