Uplink Waveform Switching Using RSRP Thresholds in 5G UE
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Solution Overview
Problem
Existing 5G mobile communication systems face challenges in efficiently managing uplink signal transmission, particularly in high-frequency bands, due to varying radio-wave conditions, which affect transmission quality and efficiency.
Innovation Solution
A method for user equipment (UE) to determine and adjust waveform modes for uplink signal transmission based on downlink signal measurements and indications from the base station, using reference signal received power (RSRP) thresholds to switch between transform precoding enabled and disabled modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed waveform mode is used for uplink transmission, then device complexity is reduced, but transmission quality deteriorates under varying radio conditions
Solution Approach 1:
The patent implements dynamic waveform mode adjustment by enabling user equipment to switch between transform precoding enabled and disabled modes based on downlink signal quality measurements. The system transitions from a static configuration to a dynamic adaptation mechanism where the waveform mode changes in response to varying radio conditions, specifically when RSRP thresholds are exceeded or fallen below
Solution Approach 2:
The patent establishes a feedback loop where the user equipment measures downlink reference signal received power (RSRP), compares it against configured thresholds, and autonomously adjusts the uplink waveform mode accordingly. This closed-loop control enables the system to respond to channel conditions in real-time, improving transmission reliability without requiring continuous network intervention
2Reliability
If waveform mode is dynamically adjusted based on RSRP measurements, then transmission quality is improved, but device complexity increases
Solution Approach 1:
The patent empowers the user equipment to autonomously perform waveform mode selection by measuring downlink RSRP, comparing it with configured thresholds, and independently deciding whether to switch modes. This self-service capability eliminates the need for complex network-side control mechanisms or frequent signaling exchanges, reducing overall system complexity while maintaining adaptive performance
Solution Approach 2:
The patent changes the operational parameters of the uplink transmission by switching between transform precoding enabled and disabled waveform modes based on the measured RSRP parameter. This parameter-based adaptation allows the system to optimize transmission quality through simple threshold comparisons rather than complex multi-parameter optimization algorithms
Data Source
AI summary
The present disclosure provides a method and device for enhancing uplink signal transmission. UE can acquire indication information for a plurality of different transmission modes through the method provided by the present disclosure, and can also determine the transmission mode to be used according to the criteria for determining to use the different transmission modes provided by the present disclosure. Moreover, according to the method of the present disclosure, the UE can determine an opportunity to use the changed transmission mode. Thus, the UE can use an appropriate transmission mode in the case of different requirements (for example, different coverage requirements).