Multi-TRP PUCCH Repetition With Alternating Power Control
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Solution Overview
Problem
Existing wireless communication systems face challenges in supporting efficient uplink transmission and reception for multiple transmission and reception points (TRPs) and in controlling transmission power effectively in such systems.
Innovation Solution
A method and apparatus for uplink transmission and reception in a wireless communication system that involves configuring two power control parameter sets for physical uplink control channel (PUCCH) transmission, alternating their use for each or every other repetition to determine transmission power based on received configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single power control parameter set is used for PUCCH transmission, then the system is simple to operate, but it cannot provide individual power control for multiple TRPs
Solution Approach 1:
The patent divides the power control parameter set into multiple separate parameter sets, with each parameter set corresponding to a specific TRP. This segmentation allows independent power control for each TRP while maintaining a structured and manageable configuration approach.
Solution Approach 2:
The patent implements dynamic selection between multiple power control parameter sets based on the indicated TRP. The system can switch between different parameter sets depending on which TRP is being served, enabling adaptable power control for multi-TRP scenarios.
2Adaptability or versatility
If multiple power control parameter sets are configured for different TRPs, then individual power control for each TRP is enabled, but the configuration and processing complexity increases
Solution Approach 1:
The patent creates a universal framework where multiple power control parameter sets can be configured and managed through a single PUCCH resource. The same PUCCH resource structure handles power control for multiple TRPs by selecting the appropriate parameter set based on TRP indication, reducing the need for separate resource configurations.
3Reliability
If PUCCH transmission is repeated for multiple TRPs, then coverage and reliability are improved, but the transmission time and energy consumption increase
Solution Approach 1:
The patent implements periodic repetition of PUCCH transmission for multiple TRPs, where the same PUCCH resource is used for repeated transmissions. By utilizing the established periodic structure and alternating between different power control parameter sets for each repetition, the system achieves reliable multi-TRP coverage while managing transmission time through efficient parameter switching.
Data Source
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AI summary
Disclosed are a method and device for transmitting and receiving an uplink in a wireless communication system. A method for transmitting a physical uplink control channel (PUCCH) according to an embodiment according to the present disclosure comprises the steps of: receiving configuration information related to a PUCCH from a base station; and transmitting the PUCCH to the base station from one PUCCH resource on the basis of the configuration information. The PUCCH is repeatedly transmitted in a plurality of transmission occasions (TOs) for the one PUCCH resource. The plurality of TOs are mapped to N TO groups (where N is a natural number) each including one or more of the TOs. The N TO groups are associated with N power control parameter sets in the configuration information related to the PUCCH. The transmission power of the PUCCH can be determined on the basis of a power control parameter set associated with the TO group in which the PUCCH is transmitted.