Relay Communication Timing Synchronization for Collision-Resistant Broadcasts

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Solution Overview

Problem

In multi-hop communication systems, broadcast transmission is inefficient due to signal concentration on the master terminal, leading to delays and potential failure of signals reaching terminals far from the master, especially in both wired and wireless communication networks.

Innovation Solution

A relay communication apparatus and method that synchronizes the timing of broadcast signal transmission across multiple terminals using IEEE 1588 time synchronization, allowing simultaneous broadcast transmission with reduced medium occupation time and minimized collision risk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the terminal performs unicast transmission to the master, then the signal can reach the master, but signals concentrate on the master causing delays and potential failure to reach distant terminals

Engineering Contradiction:

Improvesignal delivery reliabilityVSAvoidcommunication delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments the broadcast transmission process by having multiple relay terminals independently receive and retransmit the broadcast signal. Instead of one master terminal handling all broadcast transmissions, the signal is divided and propagated through multiple relay nodes simultaneously, reducing congestion at any single point and improving both reliability and speed of delivery to distant terminals.

Inventive Principle:

Principle #1Segmentation

2Area of stationary object

If multiple terminals perform broadcast transmission simultaneously, then coverage is improved, but signal collision occurs

Engineering Contradiction:

Improvebroadcast coverage areaVSAvoidsignal transmission reliability

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The patent implements periodic action through synchronized transmission timing. Relay terminals transmit broadcast signals at specifically coordinated time intervals rather than continuously or randomly. This periodic, synchronized approach allows multiple terminals to expand coverage while avoiding signal collisions through precise temporal separation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The synchronization controller uses feedback mechanisms to coordinate transmission timing among relay terminals. By monitoring and adjusting transmission based on received signals and timing information from other terminals, the system optimizes broadcast coverage while preventing signal collisions through adaptive timing adjustments.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250226905A1Relay communication apparatus, communication method, and communication system

Publication Date: 2025.07.10 PANASONIC HOLDINGS CORP

AI summary

A relay communication apparatus according to one exemplary embodiment of the present disclosure includes a receiver that receives a first signal transmitted by broadcast from a first communication apparatus; a transmitter that transmits the first signal by broadcast; and a synchronization controller that synchronizes a timing at which a second communication apparatus receiving the first signal transmitted by broadcast from the first communication apparatus transmits the first signal by broadcast and a timing at which the transmitter transmits the first signal by broadcast.