Direct Communication Security via Pre-Authentication and Adaptive Power Modes

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Solution Overview

Problem

Direct communication between terminals without a network environment poses security risks due to the lack of effective user verification mechanisms, especially when transmitting user data.

Innovation Solution

Implementing a method where terminals establish a direct communication connection by acquiring and verifying user verification information, such as fingerprints, before initiating data transmission, using secure transmission modes like Wi-Fi hotspot, Bluetooth, or NFC, and adjusting communication modes based on power thresholds to optimize energy efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If direct communication is established between terminals without network environment, then data transmission can be achieved, but security is compromised due to lack of user verification mechanisms

Engineering Contradiction:
ImprovesecurityVSAvoidverification mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by performing user verification through fingerprint acquisition and authentication before establishing the direct communication connection. The verification process is executed in advance during the connection establishment phase, ensuring that only authenticated users can initiate data transmission, thereby resolving the security vulnerability without requiring complex ongoing verification mechanisms

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary verification mechanism where the terminal device acts as a mediator between the users. The system incorporates a verification module that mediates the authentication process by comparing fingerprint information against stored user data, providing a security layer that does not require external network infrastructure while maintaining reliable security verification

Inventive Principle:
Principle #24Intermediary (Mediator)

2Use of energy by moving object

If power consumption is optimized by switching communication modes, then energy efficiency improves, but communication reliability may be affected

Engineering Contradiction:
Improvepower consumptionVSAvoidcommunication reliability
Core Design Contradiction:
Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies dynamics by implementing a dynamic communication mode selection mechanism that adapts to real-time power conditions. The system monitors power availability and automatically switches between different communication modes (e.g., Wi-Fi hotspot, Bluetooth, NFC) based on current power levels, ensuring optimal energy efficiency while maintaining communication reliability through adaptive mode selection rather than static configuration

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent utilizes parameter changes by modifying communication parameters such as transmission power, data rate, and communication protocol based on available power thresholds. When power is sufficient, higher-rate modes are used; when power is limited, lower-consumption modes are activated, thereby optimizing energy usage while preserving communication reliability through parameter adaptation

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3422798B1Communication methods and devices for direct communication
Publication Date: 2021.09.01 GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD
  • EP3422798B1 patent drawingFigure 1
  • EP3422798B1 patent drawingFigure 2
  • EP3422798B1 patent drawingFigure 3

AI summary

The present disclosure provides a communication method and device. The method includes that: when an instruction for instructing transmitting user data via a direct communication connection is received, user verification information is acquired, the user verification information including verification data input through a first terminal; the user verification information is sent to a second terminal; when verification success information is received from the second terminal, a first direct communication connection is established with the second terminal; and the user data is sent to the second terminal via the first direct communication connection. (FIG. 3)