Communication Apparatus Extracting Cause Value for Missed Call Indication
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Solution Overview
Problem
Existing communication apparatuses fail to provide a reliable indication of the cause of a missed call, leading to uncertainty for the called user about the importance or urgency of the call, as they cannot distinguish between disconnections caused by the calling user or the network.
Innovation Solution
The apparatus extracts a 'cause value' from network messages using processing means, which outputs an indication to the user whether the missed call was caused by the network (indicating urgency) or the calling user (indicating non-urgency), utilizing standardized call control procedures and cause information elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication apparatus only provides a basic missed call indication, then the device complexity is low, but the reliability of call information is insufficient
Solution Approach 1:
The patent extracts the cause value from the cause information element in the disconnect message to identify the specific reason for the missed call (e.g., user rejection, network timeout, busy signal). This extraction approach provides reliable call information without requiring complex additional hardware, as it utilizes existing network message structures.
Solution Approach 2:
The patent introduces an intermediary processing layer that receives the disconnect message from the network, extracts the cause information element, and translates it into user-friendly indications. This intermediary approach bridges the gap between raw network data and meaningful user information, improving reliability without directly complicating the device architecture.
2Loss of information
If the communication apparatus provides detailed cause information, then the loss of information is reduced, but the device complexity increases
Solution Approach 1:
The processing means extracts only the essential cause value from the cause information element in the disconnect message, focusing on the most relevant information (e.g., whether the call was rejected, timed out, or encountered a busy signal). This selective extraction reduces information loss while keeping processing complexity manageable.
Solution Approach 2:
The patent applies local quality by providing different levels of information detail based on the specific cause. For example, certain cause values trigger specific user-facing indications while others may be handled differently. This localized information presentation optimizes the balance between information completeness and processing requirements.
3Measurement precision
If the communication apparatus only counts the number of rings, then the device complexity is low, but the measurement precision of call importance is insufficient
Solution Approach 1:
The processing means acts as an intermediary that combines the ring count with the cause value from the disconnect message to generate a more precise indication of call importance. For example, a high ring count combined with a network timeout cause indicates different urgency than a low ring count with user rejection. This intermediary processing enhances measurement precision without requiring complex algorithms.
Solution Approach 2:
The patent merges multiple information sources (ring count and cause value) into a unified missed call indication that provides more precise information about call importance. This combination approach leverages existing simple components to achieve better measurement precision without proportionally increasing device complexity.
Data Source
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AI summary
The present invention relates to a communication apparatus (1) for providing an indication about a missed telephone call, said apparatus (1) comprising: receiving means (10) for receiving an incoming call; control unit (20) for processing said incoming call output means (30) for outputting information to an user. The invention is characterized in that said apparatus (1) comprises processing means (40) for extracting a cause value contained in a cause information element sent from a network (N) to said communication apparatus (1) and for outputting to the user an indication related to a missed call via the output means (30).