Discontinuous Repeated Data Transmission for 5G Power Efficiency
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Solution Overview
Problem
In 5G mobile communication systems, the high frequency of repeated data transmissions in scenarios like massive machine-type communications increases power consumption and interference, while existing methods do not effectively reduce the number of transmission occasions to improve coverage and efficiency.
Innovation Solution
A data transmission method where a terminal device and network device reduce the number of repeated transmission occasions from K to N, with N being discontinuous in time domain, thereby minimizing power consumption and resource usage while maintaining high time diversity gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large quantity of repeated transmission occasions is configured to ensure uplink coverage, then coverage is improved, but power consumption of the terminal device increases
Solution Approach 1:
The patent extracts and removes redundant repeated transmission occasions from the originally configured K occasions, keeping only N necessary occasions (where N < K) that are discontinuous in time domain. This extraction eliminates unnecessary transmissions that consume power while maintaining the essential coverage function.
Solution Approach 2:
The patent implements periodic repeated transmissions at discontinuous time intervals rather than continuous transmissions. By spacing transmissions periodically with gaps in between, the system maintains coverage reliability while allowing the terminal device to enter low-power states during intervals, thus reducing overall power consumption.
2Reliability
If a large quantity of repeated transmission occasions is configured to ensure uplink coverage, then coverage is improved, but interference to other terminal devices increases
Solution Approach 1:
The patent removes excess transmission occasions from the original K occasions, retaining only N essential occasions. This reduction in transmission frequency directly decreases the interference generated to other terminal devices while preserving the coverage enhancement function.
Solution Approach 2:
By implementing discontinuous periodic transmissions instead of frequent continuous transmissions, the patent reduces the overall interference footprint in the system. The periodic gaps allow other terminal devices to operate with less interference, while the transmitted signals still provide necessary coverage enhancement during active periods.
3Use of energy by moving object
If repeated transmission occasions are reduced from K to N, then power consumption is reduced, but transmission reliability may be compromised
Solution Approach 1:
The patent strategically designs periodic discontinuous transmission occasions spaced across the time domain to ensure that even with only N transmissions (fewer than original K), the time-diversity gain is maintained. The periodic spacing ensures transmissions occur during different channel conditions, preserving reliability while reducing power consumption.
Solution Approach 2:
The patent transitions from considering only the quantity of transmissions (one dimension) to also considering the temporal distribution dimension. By optimizing transmissions across the time dimension with discontinuous occasions, the system achieves both reduced power consumption and maintained reliability through time-diversity.
4Reliability
If discontinuous repeated transmission occasions are used, then time diversity gain is maintained, but transmission complexity increases
Solution Approach 1:
The patent segments the originally continuous K transmission occasions into N discrete discontinuous occasions. This segmentation approach simplifies the transmission schedule by clearly defining specific time points for transmission, making it easier to implement and manage while still achieving time diversity through the distributed timing.
Data Source
AI summary
This application provides a data transmission method and an apparatus, to reduce a quantity of times of repeated transmission of data, reduce power consumption of a terminal device, save transmission resources, and maintain a high time diversity gain. The method includes: A network device sends first information, and a terminal device receives the first information, where the first information is used to configure K repeated transmission occasions. The network device and the terminal device repeatedly transmit first data on N repeated transmission occasions in the K repeated transmission occasions, where the N repeated transmission occasions are discontinuous in time domain, K is an integer greater than 1, and N is an integer greater than or equal to 1 and less than K.