Communication Control Device for D2D Timing Overlap

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Solution Overview

Problem

Existing Device-to-Device (D2D) communication technologies face challenges where transmission timing may overlap with the discovery mode, preventing signal transmission due to deviations in switching periods between discovery and communication modes, or unexpected transmission events.

Innovation Solution

A communication control device and method that manage the communication module's mode to determine if transmission timing overlaps with the search mode, shifting the timing if necessary to avoid overlap and ensure signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal device performs direct wireless communication between terminal devices, then communication reliability is improved, but transmission timing may overlap with discovery mode causing transmission failures

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidtransmission success rate

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The communication control device performs preliminary determination of transmission timing in advance before actual transmission occurs. By checking whether the determined transmission timing overlaps with discovery mode duration beforehand, the system can proactively adjust timing to avoid conflicts, ensuring reliable transmission without failures caused by mode switching.

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If the terminal device switches between discovery mode and communication mode periodically, then device complexity is reduced, but transmission timing accuracy deteriorates due to period deviations

Engineering Contradiction:

Improvemode switching complexityVSAvoidtransmission timing accuracy

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The communication control device implements a feedback mechanism by continuously monitoring the actual transmission timing and comparing it with the scheduled timing. When timing deviations occur due to mode switching, the system detects these deviations and adjusts subsequent transmission timing accordingly, maintaining accurate timing despite periodic mode transitions.

Inventive Principle:

Principle #23Feedback

3Ease of operation

If the terminal device maintains fixed transmission timing, then ease of operation is improved, but transmission may be blocked during discovery mode

Engineering Contradiction:

Improvetransmission operation simplicityVSAvoidtransmission availability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The communication control device dynamically adjusts transmission timing based on the operational state of the terminal device. Rather than using fixed timing, the system adapts transmission schedules according to whether the device is in discovery mode or communication mode, ensuring transmissions occur only when the device is available while maintaining operational simplicity through automated adjustments.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11963090B2Communication control device, terminal device, communication control method, and control program

Publication Date: 2024.04.16 DENSO CORP

AI summary

A communication control device used in a terminal device that performs mobile communication is provided. The communication control device controls a communication module of the terminal device to perform direct communication with a different terminal device not via a base station. The communication control device manages whether the communication module is in a search mode or a communication mode, and determines, using information managed, whether a transmission timing of a signal from the communication module determined in accordance with occurrence timing of a transmission event overlaps the search mode. When determining that the transmission timing overlaps the search mode, the communication control device shifts the transmission timing out of the time duration of the search mode.