Pathloss Reference Signal Selection via Capability Reporting
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently determining pathloss reference signals, particularly in network cooperative communication, which affects the performance of 5G and 6G mobile communication systems, especially in high-frequency bands like mmWave and terahertz frequencies, impacting services such as eMBB, URLLC, and mMTC.
Innovation Solution
A method and apparatus for determining pathloss by reporting terminal capabilities to a base station, receiving higher layer signaling, transmitting uplink signals, and updating pathloss information, utilizing unified TCI states and transmission power parameters to optimize communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pathloss reference signal determination is performed in network cooperative communication, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the pathloss reference signal determination process into distinct functional components: capability reporting by the terminal, pathloss reference signal determination by the base station, and coordinated signaling. This segmentation allows each component to operate independently with well-defined interfaces, reducing overall system complexity while maintaining communication reliability through specialized functionality.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal reports its capability information to the base station, which then determines the appropriate pathloss reference signal. This feedback loop enables the system to adapt to terminal capabilities dynamically, improving communication reliability without requiring complex predetermined configurations for all possible terminal types.
2Productivity
If unified TCI states and transmission power parameters are utilized, then signal transmission efficiency is improved, but measurement and detection difficulty increases
Solution Approach 1:
The patent applies preliminary action by having the terminal report its capability information in advance before actual communication begins. The base station uses this pre-provided capability information to determine the appropriate pathloss reference signal and configure transmission parameters beforehand. This eliminates the need for complex real-time measurements and detection during signal transmission, improving efficiency while reducing measurement difficulty.
Solution Approach 2:
The patent introduces capability information reporting as an intermediary mechanism between the terminal and base station. Instead of directly measuring and detecting terminal characteristics in real-time, the system uses the capability information report as an intermediary to determine transmission parameters. This intermediary approach simplifies measurement and detection requirements while maintaining efficient signal transmission through proper pathloss reference signal selection.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure relates to a method for determining a real number based on path loss in a wireless communication system and an apparatus capable of performing the same. The method provides receiving, from a first base station, downlink control information (DCI) indicating an application of a pathloss (PL) offset; and transmitting, to a second base station, a physical random access channel (PRACH) based on the DCI, wherein the second base station includes an uplink (UL) transmission and reception point (TRP).