Uplink Power Control via Segmented Domain TPC Configuration
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Solution Overview
Problem
Current mobile communication systems face challenges in supporting high-speed data services, increased user connections, low latency, and energy efficiency, particularly in managing uplink transmission power across various power control domains.
Innovation Solution
A method for controlling uplink transmission power in a wireless communication system involves receiving power control configuration information and transmission power control (TPC) information from a base station, allowing for differentiated power control across multiple power control domains, with specific domains using common TPC information and others using independently configured TPC information, and considering the location and resource allocation of these domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate TPC information is configured for each power control domain, then power control precision is improved, but signaling overhead increases
Solution Approach 1:
The patent segments power control domains into different types (first power control domain for grant-based uplink transmission and second power control domain for grant-free uplink transmission), allowing separate TPC information configuration for each segment. This enables precise power control for each transmission type while managing signaling overhead through selective application.
Solution Approach 2:
The patent applies different TPC information configuration strategies to different power control domains based on their specific requirements. The first power control domain (grant-based) receives separate TPC information for precise control, while the second power control domain (grant-free) can use common TPC information, optimizing the balance between precision and overhead locally for each domain.
2Quantity of substance
If common TPC information is used for multiple power control domains, then signaling overhead is reduced, but power control adaptability deteriorates
Solution Approach 1:
The patent divides power control into multiple domains (grant-based and grant-free) and applies common TPC information selectively to the second power control domain where adaptability requirements are lower. This segmentation allows overhead reduction in appropriate areas while preserving adaptability where needed.
Solution Approach 2:
The patent applies separate TPC information configuration only to the extent necessary for each power control domain. For the second power control domain (grant-free), common TPC information is used partially, accepting some reduction in adaptability in exchange for significant overhead reduction, while maintaining full adaptability for the first power control domain.
Data Source
AI summary
A method for controlling transmission power in a wireless communication system, and an apparatus therefor are disclosed in the disclosure. Specifically, the method for controlling uplink transmission power in a wireless communication system, that is performed by a terminal, may comprise the steps of: receiving from a base station power control configuration information with respect to a plurality of power control domains by means of higher layer signalling; receiving from the base station downlink control information (DCI) including transmission power control (TPC) information with respect to at least one of the plurality of power control domains; and performing uplink transmission using transmission power that is determined based on the power control configuration information and the TPC information.