Terminal Feedback NACK Transmission for Uplink Resource Efficiency
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Solution Overview
Problem
The existing feedback methods in communication systems, such as LTE, lead to unnecessary resource waste and reduced throughput due to inefficient data packet acknowledgment processes.
Innovation Solution
A method where a terminal device transmits only negative acknowledgement (NACK) information to a base station for unsuccessfully received data packets, requesting time-frequency resources dynamically based on feedback indications, thereby optimizing resource allocation and reducing unnecessary acknowledgments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device transmits feedback information for all received data packets (including both ACK and NACK), then the base station can accurately determine the receiving status of all data packets, but this leads to unnecessary resource waste and reduced system throughput
Solution Approach 1:
The patent extracts only the necessary feedback information (NACK for unsuccessfully received data packets) from the complete feedback set, eliminating unnecessary ACK feedback for successfully received packets. This reduces feedback message length and uplink resource consumption while maintaining the base station's ability to identify and retransmit only the packets that need retransmission.
2Loss of information
If the terminal device transmits feedback information for all received data packets, then complete receiving status is provided, but this increases feedback message length and uplink transmission overhead
Solution Approach 1:
The patent extracts only the essential error information (NACK indicators for unsuccessfully received data packets) from the complete receiving status, eliminating redundant acknowledgment information. This maintains the base station's ability to identify retransmission needs while significantly reducing feedback message length and uplink overhead.
3Productivity
If the terminal device requests time-frequency resources dynamically based on feedback indications, then resource allocation efficiency is improved, but the complexity of resource management increases
Solution Approach 1:
The patent implements dynamic resource allocation where the terminal device requests time-frequency resources based on actual feedback needs (whether NACK information exists). The base station dynamically grants resources when needed and releases them when not needed, making the resource management flexible and adaptive to actual system conditions while improving overall efficiency.
Data Source
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AI summary
The present invention provides a method, a terminal device and a base station for transmitting feedback information, the method includes: receiving, by the terminal device, the plurality of data packets transmitted by the base station; if the terminal device determines that there is an unsuccessfully received data packet in the plurality of data packets, transmitting, by the terminal device, first feedback information to the base station, where the first feedback information is configured for feeding back for the receiving status of the plurality of data packets, and the first feedback information includes only negative acknowledgement (NACK) information for negatively acknowledging the unsuccessfully received data packet. Therefore the terminal device does not need to transmit specialized acknowledgement information to the base station for a successfully received data packet, thereby avoiding a waste of resources and improving the throughput of the communication system.