Headend Backbone Failure Tolerance via Repeater Mode
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Solution Overview
Problem
Conventional BPL headends fail to automatically restore connections to the backbone network when a connection loss occurs, leading to network blockages and prolonged outages, as they lack mechanisms to proactively manage failures and switch between operational modes.
Innovation Solution
The headend is equipped with means to detect the status of its connection to the backbone network, allowing it to deactivate its management function upon failure, thereby allowing connected BPL terminals to seek alternative connections, and optionally activate a repeater operation to maintain data packet forwarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the headend maintains its management function for connected BPL terminals after backbone network connection failure, then the headend can continue to control and manage terminals, but the BPL network becomes blocked and terminals cannot exchange data with the backbone network
Solution Approach 1:
The headend performs preliminary detection of backbone network connection status and proactively deactivates the management function before terminals attempt data transmission, preventing network blockage. The detection means continuously monitors connection status and triggers automatic management function deactivation upon failure detection, eliminating the need for manual intervention and preventing terminal blockage.
2Reliability
If the headend automatically deactivates management function upon backbone connection failure, then terminals can seek alternative connections and network reliability improves, but the headend loses ability to manage and control connected terminals
Solution Approach 1:
The headend performs preliminary detection of backbone network connection status and proactively deactivates the management function before terminals attempt data transmission, preventing network blockage. The detection means continuously monitors connection status and triggers automatic management function deactivation upon failure detection, eliminating the need for manual intervention and preventing terminal blockage.
Solution Approach 2:
The system implements automatic feedback loops where the headend continuously monitors backbone network connection status and automatically adjusts management function state accordingly. When connection is restored, the management function is automatically reactivated, creating a closed-loop control system that maintains optimal network operation without manual intervention.
3Ease of repair
If manual troubleshooting is performed for backbone connection failures, then the problem can be analyzed and fixed, but network outage duration increases and productivity decreases
Solution Approach 1:
The headend autonomously detects backbone connection failures and automatically deactivates its management function to prevent network blockage, serving itself without human intervention. The system continuously self-monitors connection status and performs automatic protective actions, eliminating the need for manual fault diagnosis and reducing network outage duration to near-zero for prevention scenarios.
Solution Approach 2:
The system implements automatic feedback loops where the headend continuously monitors backbone network connection status and automatically adjusts management function state accordingly. When connection is restored, the management function is automatically reactivated, creating a closed-loop control system that maintains optimal network operation without manual intervention.
Data Source
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AI summary
A headend for providing communication between broadband powerline (BPL) end devices and a backbone network is described. The headend (HE1, HE1', HE2) has a BPL interface for communication with the BPL end devices (BE1, BE2) and an uplink interface for communication with the backbone network. The BPL end devices (BE1, BE2) connect to the headend (HE1, HE1', HE2) via the BPL interface. Under normal operating conditions, the headend (HE1, HE1', HE2) manages connected BPL end devices (BE1, BE2) and forwards data packets between the connected BPL end devices (BE1, BE2) and the backbone network. To ensure continued reliable operation in the event of a connection failure to the backbone network, the headend (HE1, HE1', HE2) includes means for detecting the status of the connection to the backbone network.Upon detection of a failure of the connection to the backbone network, the headend (HE1, HE1') is configured to deactivate the management function for the connected BPL terminals (BE1, BE2). With the management functions deactivated, the terminals (BE1, BE2) previously connected to the headend (HE1, HE1') are no longer managed by the headend (HE1, HE1') and thus lose their logical connection to the headend (HE1, HE1'). In a preferred embodiment, the headend is also configured to activate repeater operation, wherein, in repeater mode, the headend (HE1') receives data packets via the BPL interface, processes them, and retransmits them via the BPL interface, preferably to another headend. Furthermore, a system comprising at least one headend according to the invention is disclosed, as well as a method for fault-tolerant connection of BPL terminals to a backbone network via one of at least two headends.