Data Transmission Device Retransmission Control for Wireless Resource Efficiency
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Solution Overview
Problem
In wireless communication systems, terminals fail to receive data when they miss control information, leading to wasted resources due to incomplete feedback information transmission following the HARQ scheme.
Innovation Solution
A data transmission method that codes packets, transmits decoding codes, and retransmits packets when feedback is missing, using a controller to manage retransmissions based on decoding success or failure information to enhance radio resource efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal fails to receive control information, then the terminal cannot receive data, but the resource is wasted until the maximum number of repeats of feedback information is completed
Solution Approach 1:
The patent applies preliminary action by transmitting the decoding code together with the coded data packet in advance. This allows the receiving terminal to independently decode the data without waiting for separate control information, enabling data reception even when control information is missed. The decoding code is prepared and sent beforehand as part of the data transmission package.
Solution Approach 2:
The patent introduces an intermediary element - the decoding code - that mediates between the transmitted data and the receiving terminal's ability to decode it. This decoding code acts as a self-contained instruction that enables the terminal to recover the original data without requiring external control information, thus resolving the dependency issue.
2Loss of information
If the terminal fails to receive data, then the terminal cannot transmit feedback information, but the resource is wasted until the maximum number of repeats of feedback information is completed
Solution Approach 1:
The patent implements feedback by having the receiving terminal send acknowledgment information back to the transmitting terminal after successfully decoding the data. The transmitting terminal monitors for this feedback and only retransmits coded packets when feedback is not received, creating an efficient feedback-driven retransmission mechanism that avoids unnecessary resource consumption.
Solution Approach 2:
The patent applies dynamics by making the retransmission behavior adaptive based on received feedback. The transmitting terminal dynamically adjusts its transmission strategy - sending coded packets only when feedback is missing and proceeding to the next packet when feedback is received - optimizing resource usage according to real-time communication conditions.
3Reliability
If the terminal fails to receive control information, then the terminal cannot decode the data, but retransmitting coded packets without control information increases transmission overhead
Solution Approach 1:
The patent merges the control information and data transmission by incorporating the decoding code directly into the data packet transmission. Instead of separate control messages and data packets, the decoding code is embedded within or alongside the coded data, creating a unified transmission unit that carries both the encoded data and the instructions needed to decode it.
Solution Approach 2:
The patent implements self-service by enabling the receiving terminal to autonomously decode the data using the included decoding code without requiring external control information. The transmitted packet is self-contained with all necessary information for successful decoding, allowing the terminal to service its own decoding needs independently.
Data Source
AI summary
A data transmission device transmits coded packets and a code for decoding the coded packets to a receiving device. The data transmission device retransmits the coded packets and the code to the receiving device when failing to receive feedback information on a decoding success state of the coded packets from the receiving device. Accordingly, the data transmission device can increase the radio resource efficiency in the wireless communication system.