Call Setup Failure Rate Metric for LTE Network Optimization
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Solution Overview
Problem
Communication networks face challenges in measuring and optimizing call setup failure rates, which result in inconvenient call failures and wastage of network resources due to factors like network delays and bearer establishment issues, necessitating a metric for call setup failures prior to notification.
Innovation Solution
A system and method for determining call setup failure rates on LTE communication networks by generating call detail records, aggregating them over a predetermined period, calculating the failure rate, and adjusting network parameters when the rate exceeds a threshold to reduce failures, including triggering alerts for network optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If call setup procedures are performed on the LTE communication network, then voice call connectivity is established, but call setup failures occur due to network delays, signaling response times, and bearer establishment issues
Solution Approach 1:
The system performs preliminary monitoring and measurement of call setup failures by generating call detail records and aggregating failure data before implementing network optimizations. This allows the network to proactively identify and address potential issues before they significantly impact service quality.
Solution Approach 2:
The patent implements a feedback mechanism where call setup failure rates are continuously measured, compared against thresholds, and used to trigger alerts and optimize network parameters. This closed-loop system enables dynamic adjustment of network configuration based on actual performance data.
2Reliability
If network parameters are adjusted to reduce call setup failures, then call setup success rate improves, but network complexity increases
Solution Approach 1:
The system implements self-service automation where the network automatically monitors call setup failures, calculates failure rates, compares them against thresholds, and triggers appropriate optimization actions without requiring manual intervention. This reduces the operational complexity burden on network engineers.
Solution Approach 2:
The patent focuses on optimizing specific network parameters related to call setup procedures, such as signaling response times and bearer establishment parameters. By targeting specific parameters rather than进行全面 network reconfiguration, the solution improves reliability while minimizing the increase in overall network complexity.
3Loss of information
If call setup failures are monitored and measured, then network optimization is enabled, but additional network resources and processing are required
Solution Approach 1:
The system extracts only the essential information needed for call setup failure monitoring from the overall call detail records. By focusing on specific failure-related data points rather than processing complete call records, the solution enables effective monitoring while minimizing the additional processing resources required.
Data Source
AI summary
A computer-implemented method includes generating at least one call detail record for each call initiated on a communication network, aggregating the call detail records generated over a predetermined time period to provide an aggregated call detail record, and calculating a call set up failure rate for the calls from the aggregated call detail record, wherein the call set up failure rate is a measure of the amount of calls that failed prior to ringing at a called party's device. The computer-implemented method further includes adjusting parameters of the communication network when the call set up failure rate is above a threshold.