RRC Failure Detection for Faulty Device Layer Blocking
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Solution Overview
Problem
Existing telecommunications networks struggle to differentiate between network issues and faulty devices or bad actors attempting to access the network, leading to repetitive failed RRC connection attempts that consume resources and cause service outages.
Innovation Solution
A system and method to identify missing RRC connection messages, track device identifiers, and communicate disablement commands or RRC reject messages to prevent faulty devices from attaching to specific network layers or rejecting access entirely, using machine learning for intelligent layer management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network continuously attempts to establish RRC connection with devices, then connection establishment is improved, but network resources are wasted and service outages occur
Solution Approach 1:
The system performs preliminary actions by disabling specific network layers or parameters before attempting RRC connection with a device. When a device fails to send the RRC connection setup complete message, the network identifies the device as faulty and proactively disables problematic layers (such as specific frequency bands or radio technologies) in advance, preventing subsequent connection attempts from consuming network resources.
Solution Approach 2:
The invention extracts the faulty device identification mechanism from the connection establishment process. By monitoring for the absence of the RRC connection setup complete message and identifying devices that repeatedly fail this check, the system separates faulty devices from legitimate ones, allowing the network to take corrective action (disabling layers) without affecting overall connection reliability.
2Loss of energy
If the network disables specific layers for faulty devices, then resource wastage is reduced, but legitimate devices may be affected
Solution Approach 1:
The system applies local quality by targeting specific network layers or parameters for disabling rather than shutting down the entire network. When a device is identified as faulty, the network selectively disables only the problematic layers (e.g., specific frequency bands like 700MHz or 850MHz, or specific radio technologies) that caused the connection failures, while leaving other layers operational for legitimate devices.
Solution Approach 2:
The network implementation dynamically adjusts layer disablement based on real-time monitoring of RRC connection messages. The system can enable or disable specific layers depending on the device's behavior patterns, allowing flexible adaptation to different device types and network conditions without requiring static network configuration changes.
3Measurement precision
If the network monitors and tracks device identifiers, then faulty device identification is improved, but system complexity increases
Solution Approach 1:
The monitoring and tracking mechanism is integrated into existing network components that already perform similar functions during normal operation. The same infrastructure used for tracking device location, mobility management, and connection establishment is leveraged to identify faulty devices, eliminating the need for separate dedicated monitoring systems.
Solution Approach 2:
The system uses feedback from the absence of RRC connection setup complete messages to trigger faulty device identification. When a device fails to send this message after receiving the setup message, the network records this behavior pattern and uses it as feedback to identify faulty devices, leveraging existing message exchange protocols rather than requiring new communication mechanisms.
Data Source
AI summary
Systems and methods are provided for adding a detection mechanism and validation means to identify faulty devices to effectively manage them to improve network accessibility metrics. Carrier configuration can be utilized to dynamically disable/enable certain layers/bands/RAT in order to effectively manage which devices can attach to the network and to which layers they may attach. Such management techniques can be utilized when devices have met a predetermined failure threshold indicating the device has failed to return a radio resource control (RRCE) connection setup complete message a predetermined number of times within a predetermined time period (e.g., 10 failures within an hour from the same cell). This likely indicates a bad actor attempting to access the network and should be handled appropriately.