Communication Device Retransmission Control for Delay Reduction
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Solution Overview
Problem
Existing communication device and network retransmission control methods impose a heavy load due to unnecessary retransmission of data, as they transmit retransmission data for all communication data, including that which does not require delay reduction.
Innovation Solution
A communication device and method that generates and transmits retransmission confirmation data only for specific transmission data requiring delay reduction, using a transmission data generation unit and retransmission confirmation data generation unit to output retransmission confirmation data a predetermined number of times at a first transmission interval, with a communication interface assigning order information to ensure efficient retransmission control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If retransmission data is transmitted for all transmission data, then data transmission reliability is improved, but device load and network load increase
Solution Approach 1:
The patent segments transmission data into two categories: important data requiring delay reduction and ordinary data. Retransmission confirmation data is only generated and transmitted for important data, not for all data. This segmentation allows the system to maintain reliability for critical data while avoiding unnecessary device and network load from retransmitting ordinary data.
2Speed
If retransmission confirmation data is transmitted frequently, then retransmission detection speed is improved, but network load increases
Solution Approach 1:
The patent implements periodic transmission of retransmission confirmation data at predetermined intervals for important data. This periodic action ensures that retransmission detection occurs at regular intervals, maintaining acceptable detection speed while avoiding continuous transmission that would excessively increase network load. The system balances detection speed and network load through this timed, periodic approach.
Data Source
AI summary
In order to enable retransmission control without imposing heavy load on a transmitter/receiver device and a network, a communication device includes: a transmission data generation unit that outputs, as transmission data, communication data for which an increase in transmission delay is to be reduced; a retransmission confirmation data generation unit that outputs, after the transmission data is output, retransmission confirmation data a predetermined number of times at a first transmission interval; and a communication interface that assigns order information indicating a transmission order, to each of the transmission data and the retransmission confirmation data, and transmits, after the transmission data is transmitted, the retransmission confirmation data.