Mobile Device Certificate Segmentation for Broadcast Verification

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Solution Overview

Problem

Wireless communication networks face challenges in verifying the authenticity and integrity of communication messages transmitted by mobile devices, particularly as the number of devices increases, leading to interference and reduced communication quality.

Innovation Solution

Mobile devices, such as UAVs, partition certificates into segments and embed these segments into frames for sequential transmission, allowing receivers to authenticate the broadcast remote identification by concatenating the segments to form the certificate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the number of mobile devices in a region increases, then communication capacity and network utilization improve, but verification difficulty and interference increase

Engineering Contradiction:
Improvecommunication capacityVSAvoidverification difficulty
Core Design Contradiction:
ProductivityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the certificate into multiple parts that are transmitted separately. Each mobile device transmits only its corresponding certificate part, which reduces the verification burden on receivers while maintaining authentication capability. This segmentation allows the system to scale with the number of devices without proportionally increasing verification complexity.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the number of mobile devices in a region increases, then communication capacity improves, but communication quality and reliability deteriorate due to interference

Engineering Contradiction:
Improvecommunication capacityVSAvoidcommunication quality
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

By dividing the certificate into separate parts transmitted at different times, the patent reduces simultaneous transmission interference. Each device's certificate part is transmitted independently, allowing receivers to accumulate and verify parts without experiencing the interference of multiple full certificate transmissions occurring simultaneously.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements preliminary actions by having mobile devices transmit their certificate parts before actual communication occurs. This preliminary transmission of authentication information allows receivers to prepare verification processes in advance, reducing the impact of interference during actual data communication.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If full certificates are transmitted for each mobile device, then authentication accuracy improves, but data transmission overhead and time increase

Engineering Contradiction:
Improveauthentication accuracyVSAvoidtransmission time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent segments the certificate into multiple smaller parts that can be transmitted in parallel or at different times. This segmentation maintains authentication accuracy by providing complete certificate information to receivers while reducing transmission time compared to sending full certificates simultaneously for all devices.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary transmission of certificate parts before actual communication needs occur. This allows receivers to receive and process authentication information in advance, reducing the time required during actual data transmission and improving overall system efficiency.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4133784B1Verifying mobile device communications
Publication Date: 2025.09.17 QUALCOMM INC
  • EP4133784B1 patent drawingFigure 1
  • EP4133784B1 patent drawingFigure 2
  • EP4133784B1 patent drawingFigure 3

AI summary

Aspects of the present disclosure include methods, apparatuses, and computer readable media for obtaining at least one certificate, partitioning the at least one certificate into a plurality of certificate segments, embedding the plurality of certificate parts into a corresponding frame of a plurality of frames, and transmitting, sequentially, the plurality of frames at a periodicity.