PUSCH Power Control via Segmented TPC Signaling
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Solution Overview
Problem
Current wireless communication systems face challenges in effectively managing power control for physical uplink shared channels (PUSCH) in 5G mobile communication systems, particularly in ensuring timely and accurate transmit power control across different frequency bands and transmission periods.
Innovation Solution
A method where a terminal in a wireless communication system receives scheduling information for repetitive PUSCH transmission from a base station, sets a specific time period for transmit power control (TPC), and performs power control adjustments based on signals received within that set time period from the base station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power control signals are continuously transmitted for repetitive PUSCH transmissions, then transmit power control accuracy is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent segments the power control process by separating the common TPC command (applicable to all repetitive PUSCH transmissions) from individual TPC commands. The common TPC command is transmitted once to provide baseline power control for multiple transmissions, while individual TPC commands are only transmitted when power adjustments are specifically needed, thereby reducing signaling overhead while maintaining control accuracy.
Solution Approach 2:
The patent implements periodic power control by applying the common TPC command to a series of repetitive PUSCH transmissions at regular intervals. This allows the system to maintain consistent power control across multiple transmissions without requiring separate control signals for each transmission, reducing overall signaling complexity while ensuring accurate power management.
2Reliability
If power control is applied to each repetitive PUSCH transmission, then transmission reliability is improved, but power consumption and processing overhead increase
Solution Approach 1:
The patent makes the common TPC command multi-functional by applying it to control multiple repetitive PUSCH transmissions simultaneously. A single common TPC command serves the function of multiple individual TPC commands would otherwise be needed, reducing both the processing overhead and power consumption at the terminal while maintaining reliable power control across all transmissions.
Solution Approach 2:
The patent extracts the essential power control function into a separate common TPC command that is independent of individual transmission instances. This extracted common control mechanism handles the bulk of power control requirements for repetitive transmissions, allowing individual transmissions to rely on this common control rather than requiring separate power control processing for each, thereby reducing terminal power consumption and processing overhead.
3Speed
If TPC commands are transmitted for every PUSCH transmission opportunity, then power control responsiveness is improved, but signaling overhead increases
Solution Approach 1:
The patent merges multiple individual TPC commands into a single common TPC command that applies to multiple repetitive PUSCH transmissions. This consolidation reduces signaling overhead by transmitting one common control signal instead of multiple individual signals, while the common TPC command maintains responsiveness by providing timely power control adjustments that apply across all relevant transmissions.
Data Source
AI summary
The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. The present disclosure relates to a method performed by a terminal in a wireless communication system, wherein the method may comprise the steps of: receiving scheduling information, for the repeated transmission of a physical uplink shared channel (PUSCH), from a base station through a first signal; setting a time period, in which a signal for transmit power control (TPC) can be received and applied, for each of one or more PUSCHs scheduled through the first signal; and performing power control for the PUSCH transmissions corresponding to the set time periods on the basis of second signals received from a base station within the set time periods.