Millimeter Wave Transmitter Buffer Overflow Prevention

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Solution Overview

Problem

In ultrahigh speed wireless transmission systems using the millimeter wave band, there is a risk of buffer overflow in reception devices due to the high transmission speed, which can lead to unstable communication and data loss.

Innovation Solution

Implementing a method where the transmission device checks the state of the receive buffer in the reception device through signaling, using block ACK frames to determine the buffer size and frame count, and adjusts the data transmission to prevent overflow by limiting the number of packets transmitted based on the available buffer size and type of reception device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If block transmission scheme is used to enhance transmission speed, then transmission speed is improved, but buffer overflow risk increases in reception device

Engineering Contradiction:

Improvetransmission speedVSAvoidbuffer overflow risk

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The reception device performs preliminary actions by checking buffer state information and transmitting buffer state feedback to the transmission device before data transmission occurs. This allows the transmission device to adjust its transmission parameters in advance, limiting the number of packets to prevent buffer overflow while maintaining high transmission speed through block transmission scheme

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A feedback mechanism is established where the reception device transmits buffer state information (such as available buffer size, unit buffer status) back to the transmission device. The transmission device uses this feedback to dynamically adjust transmission parameters including packet number limits and packet size, ensuring transmission speed is optimized while buffer overflow is prevented

Inventive Principle:

Principle #23Feedback

2Productivity

If data transmission is increased to utilize available buffer capacity, then productivity is improved, but buffer overflow occurs when transmission exceeds buffer limits

Engineering Contradiction:

Improvedata transmission volumeVSAvoidbuffer overflow

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The transmission parameters (packet number limit, packet size) are made dynamic rather than fixed. The transmission device continuously adjusts these parameters based on real-time buffer state information received from the reception device, allowing maximum data transmission volume to be achieved while dynamically adapting to prevent buffer overflow

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention changes transmission parameters (packet count, packet size, transmission rate) based on buffer state conditions. When buffer capacity is sufficient, higher transmission volumes are permitted; when buffer capacity is limited, transmission parameters are adjusted downward, maintaining productivity while preventing buffer overflow

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS8942103B2Apparatus and method for wideband short-range wireless communication

Publication Date: 2015.01.27 ELECTRONICS & TELECOMM RES INST

AI summary

Provided is an apparatus and method for performing wideband short range wireless communication in a millimeter wave band, and the method for wideband short range wireless communication may include checking information of a reception device by performing signaling with the reception device, receiving information about a state of a receive buffer from the reception device based on the information of the reception device, and transmitting data based on the information about a state of the receive buffer.