Communication Controller Fallback Logic for IP Network Redialing
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Solution Overview
Problem
Communication devices may inadvertently switch to public networks for redialing despite user preferences for IP networks due to existing error analysis methods, leading to inefficient communication processes.
Innovation Solution
A communication device with a controller that selectively performs public line or IP communication processes, including a setting unit for fallback processes, detectors for error analysis, and determining units to decide on redialing strategies based on error information, ensuring that redialing to the IP network is only attempted when likely to succeed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic redialing is performed based on error analysis, then communication reliability is improved, but the device may switch to public network when IP network is preferred, worsening user experience and communication efficiency
Solution Approach 1:
The patent changes the parameter of redialing decision from purely error-based to error-based combined with network preference settings. The determining unit considers both the error analysis result and the user's network preference (IP network preferred or public network preferred) to make the redialing decision, thereby preventing unnecessary switching to public network while maintaining communication reliability.
Solution Approach 2:
The patent introduces feedback mechanism where the setting unit stores user preferences regarding network selection, and the determining unit uses this feedback information to guide the redialing process. The communication controller refers to the stored preference information when deciding whether to attempt IP network redialing or switch to public network, creating a closed-loop system that respects user choices.
2Reliability
If fallback process to public network is always performed, then communication availability is improved, but unnecessary switching to public network occurs, worsening communication efficiency
Solution Approach 1:
The patent changes the parameter of fallback decision from automatic to conditional. The determining unit evaluates multiple factors including error type, network preference setting, and communication state before triggering fallback. This selective approach prevents unnecessary fallback to public network while maintaining availability when truly needed.
Solution Approach 2:
The setting unit preliminarily stores user preferences regarding network selection before communication occurs. The determining unit refers to this pre-stored information when making redialing decisions, allowing the system to anticipate user intentions and avoid unnecessary network switching before it becomes problematic.
3Measurement precision
If error analysis is performed for all communication errors, then accurate redialing decision is improved, but device complexity increases
Solution Approach 1:
The patent segments the error analysis process into distinct functional components: the first detector identifies communication errors, the determining unit analyzes error types and decides on redialing strategy, and the setting unit stores preference information. This segmentation allows each component to focus on specific tasks, reducing overall system complexity while maintaining precise error analysis.
Solution Approach 2:
The determining unit performs multiple functions: it analyzes error information, determines redialing likelihood, consults user preferences, and decides on network switching strategy. By consolidating these functions into a single multi-functional unit, the patent reduces device complexity compared to having separate dedicated components for each function.
Data Source
AI summary
A communication device configured to be connected with a public network and an IP network is provided, the communication device including a communication controller that selectively performs one of a public line communication process via the public network and an IP communication process via the IP network. When determining that a redialing process to reattempt the IP communication process via the IP network is unlikely to be successfully performed, the communication controller performs a fallback process to attempt the public line communication process via the public network after switching from the IP communication process via the IP network to the public line communication process via the public network, in a situation where a setting for performing the fallback process is configured. When determining that the redialing process via the IP network is not unlikely to be successfully performed, the communication controller performs the redialing process.