DOCSIS Node RF Switching Network for Client Port Mapping
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Solution Overview
Problem
In remote PHY architectures, it is difficult to determine which client devices are being served by which RF ports, leading to inefficiencies in identifying network issues and customer impact during outages, as manual troubleshooting is time-consuming and costly.
Innovation Solution
Implementing an RF switching network within the node that allows for dynamic configuration of connectivity between RF ports and DOCSIS ports, utilizing control circuits to identify which client devices are connected to specific RF ports through the DOCSIS initialization procedure, enabling accurate determination of system topology and client device connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual troubleshooting methods are used to identify client devices connected to RF ports, then system complexity is reduced, but time consumption and cost increase significantly
Solution Approach 1:
The patent introduces an intermediary device that connects to the RF port and automatically identifies client devices through the coaxial cable network. This intermediary acts as a mediator between the RF port and client devices, performing automated identification without requiring manual troubleshooting, thus reducing both system complexity and time consumption.
Solution Approach 2:
The system enables self-service by allowing the network infrastructure itself to automatically identify and track client devices connected to each RF port. The node device performs automated discovery and mapping of client devices to RF ports without external manual intervention, reducing operational time and cost while maintaining manageable system complexity.
2Productivity
If automated identification systems are implemented to determine client device connectivity, then troubleshooting efficiency improves, but device complexity and implementation cost increase
Solution Approach 1:
The patent implements a universal identification system that can determine connectivity between RF ports and client devices through the existing coaxial cable infrastructure. The system performs multiple functions including device discovery, port mapping, and network topology identification using a single integrated approach, improving troubleshooting efficiency without proportionally increasing device complexity.
Solution Approach 2:
The patent replaces manual mechanical troubleshooting methods with automated electronic identification systems. Instead of physical inspection and manual testing, the system uses electronic signals and automated protocols to identify client devices and map them to RF ports, significantly improving troubleshooting efficiency while the added electronic complexity is managed through standardized implementations.
3Measurement precision
If RF switching networks are implemented within nodes, then client device identification accuracy improves, but node complexity increases
Solution Approach 1:
The patent segments the node functionality by introducing an RF switching network that can isolate and individually test connections to each RF port. This segmentation allows precise identification of which client devices are connected to which RF ports by systematically switching and testing each connection, improving identification accuracy while managing node complexity through modular functional division.
Data Source
AI summary
A Data Over Cable Interface Specification (DOCSIS) node includes a first DOCSIS port and a second DOCSIS port. The node also includes a plurality of radio frequency (RF) ports. A plurality of client devices can be coupled to the RF ports. A RF switching network is coupled between the first DOCSIS port and the second DOCSIS port, and the plurality of RF ports. One or more control circuits can switch the RF switching network between at least a first state and a second state. The switching of the RF switching network allows the one or more control circuits to identify which client devices are coupled to which RF ports of the node.