Base Station DCI Feedback for MTC Transmission Termination
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Solution Overview
Problem
In Machine Type Communication (MTC) systems, terminals continue to upload data blocks alternately until a maximum number of times, leading to unnecessary power consumption due to channel measurement errors and volatility, even after the base station successfully demodulates all data blocks.
Innovation Solution
A method where the base station transmits Downlink Control Information (DCI) to the terminal to prematurely terminate the data transmission when all data blocks are successfully demodulated, or when a preset number of data blocks are successfully demodulated, allowing the terminal to stop uploading and switch to a new data unit, thereby saving resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal continues to repeatedly upload data blocks until the maximum number of times is reached, then the base station can ensure successful demodulation of all data blocks, but the terminal experiences unnecessary power consumption
Solution Approach 1:
The base station sends feedback information to the terminal indicating whether all data blocks have been successfully demodulated. When demodulation is complete, the base station notifies the terminal to stop uploading, allowing the terminal to save power by avoiding unnecessary transmissions while the base station maintains reliable demodulation through this feedback mechanism
Solution Approach 2:
The base station performs demodulation checks on data blocks before the terminal reaches the maximum upload limit. By detecting successful demodulation in advance and sending stop instructions, the system prevents the terminal from performing unnecessary preliminary upload actions that would waste energy
2Productivity
If the terminal uploads data blocks alternately and repeatedly to increase time diversity effect, then transmission efficiency is improved, but additional power consumption is incurred when uploads exceed what is actually needed
Solution Approach 1:
The base station provides real-time feedback on demodulation status to the terminal. This feedback mechanism allows the terminal to maintain the alternate upload strategy for improving transmission efficiency while stopping uploads as soon as demodulation is complete, preventing excessive power consumption from unnecessary additional uploads
Data Source
AI summary
Methods and devices for prematurely terminating a transmission are provided. The method includes that a base station in a machine type communication (MTC) system receives a first data repeatedly uploaded by a terminal in the MTC system. Additionally, the base station determines whether all data blocks included in the first data are successfully demodulated. The first target number of times is a maximum number of times configured by the base station for the terminal for repeatedly uploading the first data. When determining that all the data blocks included in the first data are successfully demodulated before the total number of times of repeatedly uploading the first data reaches the first target number of times, target downlink control information (DCI) is transmitted to the terminal. The target DCI is configured to instruct the terminal to prematurely terminate uploading the first data to the base station.