Antenna Disconnection Detection via RSSI Matrix Patterns
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Solution Overview
Problem
In dense wireless networks, disconnected antennas can lead to network scalability and maintainability issues due to indistinguishable link degradation from environmental factors and lack of direct feedback, making it difficult for installers to properly configure radio shutdowns in pre-deployment stages.
Innovation Solution
A cloud-based service implements disconnected-antenna detection logic using RSSI measurements to differentiate between scattered and characteristic patterns, generating an RSSI matrix to identify disconnected antennas and send commands to shut off unused radios, leveraging concurrent radios for simplified detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional link-level parameter monitoring (RSSI, throughput) is used to detect antenna disconnection, then the monitoring process is simple, but the detection accuracy is poor because link degradation is indistinguishable from environmental factors like blockage
Solution Approach 1:
The patent introduces an intermediary detection mechanism using concurrent radios that act as mediators to indirectly assess antenna connection status. Instead of directly measuring antenna integrity, the system uses RSSI measurements from concurrent radios to infer connection status, thereby improving detection accuracy without requiring complex direct measurement equipment
Solution Approach 2:
The system implements feedback by continuously monitoring RSSI values from concurrent radios and using this feedback to determine antenna connection status. The detection logic analyzes RSSI patterns over time and provides feedback to shut down disconnected antennas, creating a closed-loop system that improves detection reliability
2Reliability
If manual configuration of radio shutdowns by installers is used in pre-deployment stages, then the system is easy to operate, but the configuration is error-prone and difficult to maintain
Solution Approach 1:
The system enables self-service by allowing concurrent radios to automatically detect antenna disconnections and trigger shutdown commands without installer intervention. The detection logic autonomously identifies disconnected antennas and executes radio shutdown, eliminating manual configuration errors and simplifying deployment
Solution Approach 2:
The patent applies preliminary action by using concurrent radios to perform detection and shutdown actions in advance during pre-deployment stages. Instead of waiting for link degradation to occur, the system proactively detects antenna disconnections early and shuts down affected radios before they impact network performance
3Loss of energy
If disconnected antennas are not detected and shut down, then all radios remain active for maximum coverage, but power consumption increases and interference occurs from unused radios
Solution Approach 1:
The system applies discarding and recovering by shutting down disconnected antennas to discard wasted energy resources. When antenna disconnection is detected, the corresponding radio is shut down to stop energy consumption from non-functional hardware, while the system recovers network efficiency by eliminating interference from disconnected antennas
Data Source
AI summary
Technologies directed to antenna disconnection detection of distributed radio frequency (RF) ports in a wireless network are described. One method receives data from the wireless devices and generates an RSSI matrix including multiple elements, each storing a receive signal strength indicator (RSSI) value indicative of a signal strength of a wireless link between a transmitter-receiver pair. The method identifies a characteristic pattern in the RSSI matrix. The characteristic pattern includes i) two or more RSSI values in a same row being less than the threshold value and ii) two or more RSSI values in a same column being less than the threshold value. The method stores an indication that an antenna is disconnected from an RF port and sends a command to the second wireless device that causes the second wireless device to disable a radio that is coupled to the RF port.