Bidirectional Communication Control for Data Loss Recovery

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Solution Overview

Problem

Existing communication control methods fail to appropriately recover data loss during data communication due to inadequate consideration of the communication status in both the upstream and downstream directions of a network, leading to inefficient retransmission processes and potential data loss.

Innovation Solution

A communication control apparatus that includes sections to obtain and analyze communication statuses in both directions, allowing for adaptive control of retransmission requests to ensure effective data recovery by determining appropriate numbers of retransmission trials and request trials based on packet loss rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If retransmission request messages are transmitted to recover data loss, then data recovery reliability is improved, but network congestion increases and reproduction delay occurs

Engineering Contradiction:

Improvedata recovery reliabilityVSAvoidnetwork congestion

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent dynamically adjusts the retransmission strategy based on real-time communication status. The control section modifies transmission processing parameters (such as retransmission frequency and timing) according to the first and second communication statuses, which indicate data loss frequencies in both directions. This dynamic adaptation allows the system to maintain high data recovery reliability while avoiding excessive retransmissions that would cause network congestion.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent implements a feedback mechanism where the transmission device receives communication status information from the reception device and adjusts its transmission behavior accordingly. The first obtaining section acquires data loss frequency information from the reception device, and the control section uses this feedback to optimize retransmission requests, ensuring reliable data recovery without generating harmful network congestion.

Inventive Principle:

Principle #23Feedback

2Reliability

If retransmission requests are increased to recover data loss, then data recovery reliability is improved, but reproduction delay increases

Engineering Contradiction:

Improvedata recovery reliabilityVSAvoidreproduction delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system dynamically adjusts retransmission timing and frequency based on communication status. By monitoring data loss frequencies in both upstream and downstream directions, the control section optimizes the timing of retransmission requests to minimize reproduction delay while ensuring reliable data recovery. This prevents unnecessary delays caused by excessive or poorly timed retransmission requests.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If communication control considers only one direction's data loss frequency, then control simplicity is maintained, but data recovery appropriateness deteriorates

Engineering Contradiction:

Improvecontrol simplicityVSAvoiddata recovery appropriateness

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent segments the communication control into two independent obtaining sections: the first obtaining section acquires data loss frequency in the downstream direction (from transmission device to reception device), and the second obtaining section acquires data loss frequency in the upstream direction (from reception device to transmission device). This segmentation allows the system to consider both directions' communication statuses independently, improving data recovery appropriateness while maintaining clear and manageable control logic.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent extends the control dimension from unidirectional to bidirectional communication status monitoring. By incorporating both first communication status (downstream) and second communication status (upstream) into the control decision-making process, the system achieves comprehensive data recovery control that accounts for network conditions in both directions, significantly improving recovery appropriateness without excessive complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS9515778B2Communication control apparatus, communication control method, and computer-readable non-transitory recording medium

Publication Date: 2016.12.06 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

AI summary

A communication control apparatus includes a first obtaining section, a second obtaining section, and a control section. The first obtaining section is configured to obtain a first communication status indicating a frequency of occurrence of data loss during first data communication from a first communication device to a second communication device. The second obtaining section is configured to obtain a second communication status indicating a frequency of occurrence of data loss during second data communication from the second communication device to the first communication device. The control section is configured to control transmission processing relating to transmission from the second communication device to the first communication device in accordance with the first communication status and the second communication status. The transmission processing includes transmission processing of transmitting a retransmission request message that requests retransmission of data identical to lost data during the first data communication.