Relay Station Timing Coordination for Uplink Efficiency

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Solution Overview

Problem

Current radio communication systems face delays in uplink and downlink data transmission due to simultaneous signal processing from multiple radio base stations, leading to inefficiencies and packet discards, particularly when relay stations cannot handle simultaneous transmissions or receptions from multiple nodes.

Innovation Solution

Implementing a communication system where relay stations and base stations notify each other of optimal timing for data transmission, allowing for staggered and efficient data exchange, preventing failures in signal processing and retransmissions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If relay stations simultaneously receive signals from multiple radio base stations, then communication coverage is expanded, but signal processing failures and delays occur

Engineering Contradiction:
Improvecommunication coverage areaVSAvoidsignal processing reliability
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The relay station determines candidate timing for receiving signals from multiple base stations in advance, before actual signal transmission occurs. This preliminary timing coordination prevents simultaneous reception conflicts and ensures reliable signal processing while maintaining expanded coverage area.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If relay stations handle simultaneous transmissions from multiple nodes, then network capacity increases, but transmission delays and packet losses occur

Engineering Contradiction:
Improvenetwork data transmission capacityVSAvoiddata transmission delay
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The relay station determines candidate timing for receiving and transmitting data in advance, coordinating with multiple base stations before actual data transmission. This prevents simultaneous transmission conflicts and packet losses while maintaining high network capacity through efficient parallel communication paths.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3209047B1Communication system and communication method
Publication Date: 2020.01.01 NEC CORP
  • EP3209047B1 patent drawingFigure 1
  • EP3209047B1 patent drawingFigure 2~3
  • EP3209047B1 patent drawingFigure 4

AI summary

In order to achieve a more efficient data transmission, an RN 200, which is to relay communications between UE 300 and a DeNB 100, notifies, in advance, the DeNB 100 of a timing at which RN 200 can transmit, to the DeNB 100, upstream data received from the UE 300, and thereafter the RN 200 transmits the upstream data to the DeNB 100.