Uplink Transmission Feedback in Wireless Communication
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Solution Overview
Problem
The New Radio (NR) system faces challenges in improving communication performance for uplink data feedback, which is critical for maintaining efficient data transmission and reception.
Innovation Solution
A wireless communication method where a terminal device transmits uplink data with accompanying transmission information, including a serial number, total transmission count, and current transmission count, allowing the network device to provide targeted feedback to the terminal device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmission information is added to each uplink data transmission, then feedback accuracy is improved, but message overhead increases
Solution Approach 1:
The transmission information is segmented into distinct fields: a serial number field indicating the transmission sequence, a total number of transmissions field indicating the maximum retry count, and a current transmission count field indicating the current attempt number. This segmentation allows the network device to process and interpret the feedback information systematically, improving accuracy while managing overhead through structured data organization.
2Reliability
If multiple transmission attempts are made for uplink data, then data transmission reliability is improved, but transmission time increases
Solution Approach 1:
The terminal device includes preliminary transmission information (serial number, total transmission count, current transmission count) with each uplink data transmission. This preliminary action allows the network device to immediately understand the transmission context and provide timely feedback, enabling the terminal to make informed decisions about whether to continue retransmitting or accept the current transmission outcome, thus managing time efficiently while maintaining reliability.
Solution Approach 2:
The network device sends feedback information to the terminal device based on the received transmission information. This feedback mechanism allows the terminal to learn whether the network successfully received the uplink data and whether retransmission is needed. The feedback loop, combined with the transmission count information, enables the system to achieve reliable data transmission while minimizing unnecessary retransmissions and controlling overall transmission time.
Data Source
AI summary
Embodiments of the present application provide a wireless communication method and a communication device. The method includes: transmitting, by a terminal device, uplink data at least one time, and for each transmission of the uplink data among at least one transmission of the uplink data, transmitting transmission information for each transmission of the uplink data, wherein the transmission information for each transmission of the uplink data comprises at least one of the following: a serial number of each transmission of the uplink data, a total number of times for transmitting the uplink data, and a number of times the uplink data has currently been transmitted among at least one transmission of the uplink data.