Terminal Device Beam Switching Time Determination
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Solution Overview
Problem
Existing communication methods face challenges in accurately receiving signals by terminal devices equipped with multiple antenna panels, as beam switching times between different panels are not accurately accounted for, leading to inefficiencies in signal reception.
Innovation Solution
A communication method where the terminal device determines the beam switching time based on whether the receive beams belong to the same or different antenna panels, allowing it to switch beams accordingly to receive signals more accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the terminal device uses a fixed beam switching time threshold for receiving PDSCH, then the device complexity is reduced, but the signal reception accuracy deteriorates when multiple antenna panels are involved
Solution Approach 1:
The patent applies local quality by differentiating beam switching time based on the specific antenna panel configuration. Instead of using a uniform threshold, the terminal device determines the beam switching time according to whether the first and second receive beams belong to the same antenna panel or different antenna panels. This localized adaptation ensures accurate signal reception for each specific antenna panel scenario while maintaining reasonable device complexity.
2Adaptability or versatility
If the terminal device switches beams between different antenna panels, then the adaptability of signal reception is improved, but the beam switching time increases
Solution Approach 1:
The patent implements dynamics by making the beam switching time adaptive rather than fixed. The terminal device dynamically determines the beam switching time based on the antenna panel configuration - using a first time value when beams belong to the same antenna panel and a second (longer) time value when beams belong to different antenna panels. This dynamic adjustment allows the system to maintain high adaptability for different antenna panel scenarios while minimizing unnecessary time delays.
3Ease of operation
If the terminal device uses a default beam for receiving PDSCH when time interval is less than threshold, then the ease of operation is improved, but the signal reception reliability deteriorates
Solution Approach 1:
The patent applies parameter changes by making the beam selection behavior dependent on the determined beam switching time parameter. Instead of always using a default beam or always switching, the terminal device adjusts its beam selection based on whether the time interval between PDCCH and PDSCH is sufficient for the determined beam switching time. This parameter-driven approach maintains ease of operation through automated decision-making while improving signal reception reliability by ensuring appropriate beam switching when time conditions permit.
Data Source
AI summary
This application provides a communication method, a terminal device, and a network device. The method includes: using, by a terminal device, a first receive parameter to receive control information sent by a network device, where the control information is used to indicate a second receive parameter used by the terminal device to receive a to-be-transmitted signal; determining, by the terminal device based on a first antenna panel to which the first receive parameter belongs and a second antenna panel to which the second receive parameter belongs, a beam switching time required for switching from the first receive parameter to the second receive parameter; and receiving, by the terminal device, the to-be-transmitted signal based on the beam switching time.