5G Terminal Beam Configuration via Symbol Offset Thresholds
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring beams for data reception in 5G and beyond systems, particularly in managing beam changes and optimizing power saving modes.
Innovation Solution
A method and apparatus for determining a beam configuration for data reception in a wireless communication system, where a terminal receives downlink control information scheduling physical downlink shared channels, and identifies symbol offsets to adjust reception based on threshold values, using default or specific transmission configuration indication states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam configuration is frequently adjusted to optimize data reception, then data reception efficiency is improved, but system complexity and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple beams with different TCI states before data reception occurs. The terminal stores these pre-configured beam information in advance, allowing quick switching between beams without complex real-time configuration calculations. This resolves the contradiction by preparing beam settings beforehand, improving reception efficiency while avoiding complex dynamic reconfiguration.
Solution Approach 2:
The patent implements dynamics by enabling flexible beam switching between different TCI states based on real-time reception conditions. The terminal can dynamically select between multiple pre-configured beams depending on signal quality and reception requirements, providing adaptability without requiring complex beam formation calculations during data reception.
2Reliability
If beam switching is performed to adapt to changing communication conditions, then communication reliability is improved, but time delay increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple beams with different TCI states before data reception occurs. The terminal stores these pre-configured beam information in advance, allowing quick switching between beams without complex real-time configuration calculations. This resolves the contradiction by preparing beam settings beforehand, improving reception efficiency while avoiding complex dynamic reconfiguration.
Solution Approach 2:
The patent uses copying by creating multiple beam configurations with different TCI states that replicate the beamforming functionality. Instead of creating entirely new beam configurations during switching, the terminal copies from pre-configured beam templates, enabling rapid transition between beams with minimal time delay while maintaining communication reliability.
3Device complexity
If default TCI state is used for all PDSCH receptions, then device complexity is reduced, but data reception quality deteriorates
Solution Approach 1:
The patent implements dynamics by enabling flexible beam switching between different TCI states based on real-time reception conditions. The terminal can dynamically select between multiple pre-configured beams depending on signal quality and reception requirements, providing adaptability without requiring complex beam formation calculations during data reception.
Solution Approach 2:
The patent applies parameter changes by varying the TCI state parameter based on the symbol offset between PDCCH and PDSCH. When the offset is less than a threshold, the terminal uses a default TCI state; when the offset is greater than or equal to the threshold, the terminal uses a specific TCI state. This conditional parameter adjustment optimizes reception quality while maintaining manageable device complexity.
Data Source
AI summary
The disclosure relates to a 5th generation (5G) or 6th generation (6G) communication system for supporting a higher data transmission rate. A method performed by a terminal is provided. The method performed by a terminal includes receiving, from a base station, DCI scheduling a plurality of PDSCHs on a PDCCH, wherein the DCI includes information on a TDRA and information on a TCI state, identifying symbol offsets between the PDCCH and the plurality of PDSCHs based on the TDRA, in case that a first symbol offset between the PDCCH and a first PDSCH is less than a threshold, receiving, from the base station, the first PDSCH based on a default TCI state, and in case that a second symbol offset between the PDCCH and a second PDSCH is equal to or greater than the threshold, receiving, from the base station, the second PDSCH based on the TCI state.