Missed Call Authentication via Network-Side SMS Verification

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Solution Overview

Problem

Current mobile communication systems fail to accurately distinguish between valid and invalid missed calls, leading to user confusion and potential harassment from malicious calls.

Innovation Solution

A method and device involving a network side server that prompts callers to enter authentication information and sends it to the called terminal as a short message, allowing the terminal to authenticate and record only valid missed calls, thereby differentiating between valid and invalid calls.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the mobile terminal simply records all incoming but not answered calls, then the recording function is simple and easy to implement, but the distinction between valid and invalid missed calls cannot be made

Engineering Contradiction:
Improvesimplicity of recording functionVSAvoidaccuracy of missed call validity distinction
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The system performs preliminary authentication of the caller before recording the missed call. The network side verifies the caller's identity through authentication information (such as voice print recognition or code input) before allowing the call to be recorded as valid, preventing invalid calls from being recorded while maintaining system simplicity

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

An authentication mechanism acts as an intermediary between the caller and the recording system. The network side server verifies the caller's authenticity through authentication information, and only authenticated calls are recorded as valid missed calls, enabling accurate distinction without complicating the terminal's recording function

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If authentication information is collected from callers, then the accuracy of distinguishing valid and invalid calls is improved, but the system complexity increases

Engineering Contradiction:
Improveaccuracy of missed call validity distinctionVSAvoidcomplexity of authentication system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The network side server serves as an intermediary that handles the complex authentication logic centrally, separating it from the mobile terminal. The terminal only needs to perform simple authentication information collection and transmission, while the network side handles the complex verification and recording decisions, reducing terminal complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system replaces complex mechanical authentication mechanisms (such as multiple verification steps at the terminal) with network-based authentication using existing communication infrastructure. The network side uses authentication information transmission and verification protocols to achieve accurate distinction without requiring complex local processing at the terminal

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If the terminal waits for authentication information from the network side, then the accuracy of call validation is improved, but the response time increases

Engineering Contradiction:
Improveaccuracy of call validationVSAvoidresponse time for call authentication
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system performs authentication verification in advance before the call recording process. The network side pre-verifies the caller's authentication information and makes determination decisions beforehand, so that when the terminal receives the authentication result, the validation accuracy is already established without requiring prolonged waiting time during the call process

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP2472915B1Method and device for detecting whether missed call is effective
Publication Date: 2015.01.07 ZTE CORP
  • EP2472915B1 patent drawingFigure 1~2
  • EP2472915B1 patent drawingFigure 3~4
  • EP2472915B1 patent drawingFigure 5

AI summary

A method and device for detecting whether a missed call is valid are disclosed in the present invention. Wherein, the method for detecting whether a missed call is valid includes the following steps: when a call is not successfully established, a network side prompting a caller to enter authentication information and sending the authentication information entered by the caller to a called terminal side in a form of a short message; the called terminal side receiving and identifying an authentication short message, judging whether the authentication short message is valid, and authenticating the corresponding incoming call number to be authenticated in a cache by using the authentication information when the authentication short message is judged to be valid; and the called terminal side writing the incoming call number passing the authentication into a missed call record. With the examples of the present invention, it is possible to only store valid missed calls into the missed call record so as to enable the user at the terminal to avoid invalid missed calls effectively, thereby meeting people's requirement on normal communication and contact.