Missed Call Analysis in Telecommunications Networks
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Solution Overview
Problem
Current mobile telecommunications networks face challenges in analyzing and managing missed call events, particularly those due to out-of-coverage situations, as existing methods like Call Detail Record analysis and passive probing systems fail to capture relevant data, leading to customer dissatisfaction and difficulty in identifying coverage-related issues.
Innovation Solution
A method for analyzing missed call events by determining the occurrence and status of unreachable terminal situations, recording these events in a database, and identifying patterns related to specific terminals, locations, and time periods, utilizing SMS alert services to trace and store missed call information effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If Call Detail Record analysis and passive probing systems are used to analyze missed calls, then existing network measurement capabilities are utilized, but out-of-coverage situations cannot be captured and analyzed
Solution Approach 1:
The patent introduces an intermediary component (network element or server) that receives and stores missed call indication messages from multiple network elements. This intermediary consolidates information about out-of-coverage events that individual network elements cannot capture alone, enabling comprehensive analysis of missed calls due to coverage issues.
Solution Approach 2:
The system implements feedback mechanisms where network elements send missed call indication messages back to the central analysis system. This feedback loop allows the network to continuously monitor, record, and analyze out-of-coverage events, transforming previously uncaptured information into actionable insights for network optimization.
2Adaptability or versatility
If terminals frequently switch between 2G and 3G cells, then coverage availability is maintained, but accumulated out-of-coverage time increases causing more missed calls
Solution Approach 1:
The patent applies preliminary action by predicting potential out-of-coverage events based on historical switching patterns and terminal behavior. The system proactively identifies terminals prone to frequent switching and can pre-adjust network parameters or alert users before missed calls occur, reducing the accumulated out-of-coverage time.
Solution Approach 2:
The system dynamically adjusts cell reselection parameters and switching thresholds based on real-time network conditions and terminal behavior patterns. By making the cell selection process adaptive rather than static, the system reduces unnecessary switching between 2G and 3G cells while maintaining coverage availability, thereby reducing accumulated out-of-coverage time.
3Reliability
If network coverage is expanded to reduce out-of-coverage situations, then missed calls due to coverage problems decrease, but network infrastructure complexity and cost increase
Solution Approach 1:
The patent enables self-service through automated analysis and optimization of cell reselection parameters. The system automatically processes missed call indication messages, identifies coverage problems, and adjusts network parameters without requiring manual intervention or extensive infrastructure changes, improving coverage continuity cost-effectively.
Solution Approach 2:
Instead of physically expanding network infrastructure, the system achieves improved coverage continuity by optimizing existing network parameters such as cell reselection thresholds, switching hysteresis values, and paging parameters. These parameter adjustments maximize the utilization of existing infrastructure to reduce out-of-coverage situations.
Data Source
AI summary
In a telecommunications network including a plurality of mobile terminals, a method of analysing missed call events in relation to at least one of the plurality of mobile terminals, the method including: determining the occurrence of a missed call event; recording the missed call event in a database, including an identity relating to the called terminal; determining and allocating a status of the called mobile terminal to the missed call event, the status selected from a plurality of options, with at least one option relating to an unreachable terminal situation; and analysing the missed call event data relating to unreachable situations to identify the existence of any patterns relating to a particular called terminal/user, called terminal type, location and/or time period. The method may also be embodied in a network element, such as a Call Alert Application Server.