Subscriber Unit Relocator for Control Channel Congestion
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Solution Overview
Problem
Current Land Mobile Radio (LMR) systems face control channel congestion issues due to insufficient real-time data on failed requests and collisions, which are not adequately addressed by existing solutions like ATIA data, and real-time analysis is hindered by aggregated data collection at the end of shifts.
Innovation Solution
A system and method using a Subscriber Unit Relocator that correlates server data with edge device analytics in real-time through a broadband link to detect and mitigate control channel congestion by analyzing access logs, adjusting retry timers, and redistributing subscriber units to minimize contention without shifting the problem to adjacent sites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If ATIA data is used to address control channel congestion, then some information about transactions is available, but failed requests and collisions are not captured because ATIA only logs successful transactions
Solution Approach 1:
The patent introduces an intermediary component (congestion detection system) that captures failed requests and collision information that ATIA misses. This intermediary collects data from multiple sources including ATIA successful transactions and additional failed transaction logs, thereby completing the information picture without compromising the reliability of congestion analysis.
2Quantity of substance
If subscriber units transfer logged data at the end of a shift, then data collection from multiple units is achieved, but real-time analysis is prevented
Solution Approach 1:
The system performs preliminary actions by continuously collecting and analyzing congestion data in real-time rather than waiting until the end of shifts. The congestion detection system proactively monitors control channel conditions as they occur, enabling immediate detection and response to congestion issues before they escalate.
Solution Approach 2:
The patent implements continuous data collection and analysis operations through the congestion detection system, which continuously monitors control channel congestion in real-time. This continuous operation replaces the discrete end-of-shift data transfer approach, maintaining uninterrupted useful action for congestion detection and analysis.
3Object-affected harmful factors
If subscriber units are redistributed to minimize control channel contention, then control channel congestion is reduced, but the problem may shift to adjacent sites
Solution Approach 1:
The congestion detection system implements feedback mechanisms that continuously monitor control channel congestion levels and use this information to make intelligent redistribution decisions. The system analyzes congestion patterns in real-time and adjusts subscriber unit assignments dynamically, preventing problem shifting to adjacent sites through coordinated, feedback-driven resource allocation.
Data Source
AI summary
A method and system for minimizing control channel contention in a communication system is provided. A subscriber unit relocator receives, via a broadband channel, a first access log indicating that the first subscriber unit had a first access failure on a narrowband channel from a first subscriber unit. The subscriber unit relocator targeted collects and receives, via the broadband channel, a second access log indicating that the second subscriber unit had a second access failure on the narrowband channel from a second subscriber unit. The subscriber unit relocator correlates the first access log, the second access log, and server data. The subscriber unit relocator adjusts parameters to minimize future inbound channel access problems.