Group Common PDSCH Beam Management for Reliable Wireless Transmission
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Solution Overview
Problem
In wireless communication systems, providing group common PDSCH transmission is challenging in diverse beam environments, especially when terminals receive different beams or TRPs, or when beam or TRP changes due to UE movement, making dynamic transmission difficult.
Innovation Solution
A method and apparatus for transmitting and receiving wireless signals involving configuration of group common PDSCHs, including receiving configuration information, monitoring PDCCH with G-RNTI scrambled CRC, and receiving DCI scheduling the group common PDSCH, with specific TCI states and UE-specific RRC reconfiguration for efficient signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If group common PDSCH transmission is provided in diverse beam environments, then coverage and service quality improve, but transmission reliability deteriorates when terminals receive different beams or TRPs
Solution Approach 1:
The patent divides the group common PDSCH transmission into multiple beam-specific transmissions. Each terminal receives PDSCH through a dedicated beam or TRP, and the base station provides separate PDCCH monitoring occasions for different beams. This segmentation allows reliable transmission to each terminal while maintaining adaptability to diverse beam environments.
Solution Approach 2:
The patent introduces dynamic beam management where the base station can switch between different beams and TRPs based on terminal movement and channel conditions. The network can dynamically adjust which beam or TRP serves which terminal, and can switch to alternative beams when channel conditions deteriorate, maintaining transmission reliability while adapting to environmental changes.
2Productivity
If dynamic transmission is implemented for moving UEs, then service continuity improves, but system complexity increases due to beam and TRP changes
Solution Approach 1:
The patent pre-configures multiple beams and TRPs for each terminal before handover or beam switching is needed. The base station prepares alternative transmission paths in advance, so when terminal movement or channel deterioration occurs, the switch can happen quickly without complex real-time calculations, maintaining service continuity while limiting complexity.
Solution Approach 2:
The patent implements feedback mechanisms where terminals report channel quality and beam measurement information to the base station. This feedback allows the network to make informed decisions about beam switching and TRP changes, reducing the complexity of managing dynamic transmissions by providing data-driven guidance for when and how to switch beams.
3Reliability
If multiple monitoring occasions are configured for different TCI states, then reception reliability improves, but processing complexity increases
Solution Approach 1:
The patent associates each monitoring occasion with specific TCI states and beams, creating localized optimization for each terminal's reception conditions. Instead of uniformly monitoring all beams, each terminal monitors only the relevant monitoring occasions corresponding to its configured TCI states, improving reception reliability for the intended beam while reducing overall processing complexity through targeted monitoring.
Data Source
AI summary
Various embodiments of the present disclosure relate to a next-generation wireless communication system for supporting high data transfer rates beyond the 4th generation (4G) wireless communication system. According to the various embodiments, a method of transmitting and receiving signals in a wireless communication system and apparatus for supporting the same may be provided.