Uplink Signal Repetition with Dynamic Parameter Variation
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Solution Overview
Problem
In 5G communication systems, there is a challenge in maintaining reliable uplink signal transmission due to path loss and channel deterioration, particularly in high-frequency bands, where existing methods lack diversity in transmission techniques when repeating uplink signals.
Innovation Solution
An electronic device is configured to change at least one of its precoding matrix, analog transmission beam, and transmission power based on a New Radio (NR) Physical Uplink Shared CHannel (PUSCH) repetition mode, determined by a processor upon receiving a downlink control signal from a base station, allowing for diverse transmission techniques during repeated signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If uplink signals are repeatedly transmitted using the same transmission technique, then transmission reliability is improved, but transmission diversity is reduced
Solution Approach 1:
The patent applies dynamics by making the transmission parameters (precoding matrix, analog beam, transmission power) variable rather than fixed during repeated transmissions. The electronic device dynamically changes at least one of these parameters across different repeated transmission instances, allowing the system to adapt to varying channel conditions while maintaining multiple transmission attempts, thus resolving the contradiction between reliability and diversity.
Solution Approach 2:
The patent directly implements parameter changes by modifying transmission parameters (precoding matrix index, analog beam index, transmission power level) between repeated uplink signal transmissions. This allows the same uplink data to be transmitted with different parameter configurations, achieving both reliability through repetition and diversity through parameter variation, directly resolving the technical contradiction.
2Adaptability or versatility
If transmission parameters are changed during repeated transmission, then transmission diversity is improved, but system complexity increases
Solution Approach 1:
The patent manages complexity by systematically changing transmission parameters (precoding matrix, analog beam, power) according to predefined patterns or base station indications. Rather than arbitrarily complex adjustments, the changes follow structured methodologies that balance diversity improvement with manageable system complexity, using parameter variation that can be controlled and tracked.
Solution Approach 2:
The patent reduces complexity by performing preliminary actions - the electronic device determines the repeated transmission mode and plans parameter changes in advance based on downlink control signals from the base station. This upfront planning allows the device to execute diverse transmissions without real-time complex decision-making, resolving the contradiction between diversity and complexity.
3Productivity
If diverse transmission techniques are used, then spectral efficiency is improved, but path loss compensation becomes more difficult
Solution Approach 1:
The patent addresses path loss compensation by specifically varying the transmission power parameter among the set of repeated transmissions. By changing power levels across different transmission instances, the system can compensate for path loss effects while simultaneously achieving diversity through other parameter variations, thus improving spectral efficiency without making path loss compensation unduly difficult.
Data Source
AI summary
Provided is a method of operating an electronic device, the method including receiving, from a base station, a downlink control signal requesting repeated transmission of an uplink signal, determining a repeated transmission mode for changing at least one of a precoding matrix, an analog transmission beam, and transmission power of the uplink signal when the uplink signal is repeatedly transmitted in response to reception of the downlink control signal, and repeatedly transmitting a plurality of uplink signals according to a determined repeated transmission mode.