Beam Switching Schemes for PDSCH Transport Block Repetitions
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently scheduling transmission operations in multiple transmission reception point (TRP) and multiple panel communication systems, particularly in managing uplink and downlink signals effectively across multiple base stations.
Innovation Solution
The proposed solution involves advanced scheduling mechanisms and protocol stacks for wireless devices and base stations, enabling efficient transmission operations in multiple TRP and multiple panel systems. This includes dynamic channel mapping, beam management procedures, and flexible bandwidth part configurations to optimize signal transmission across multiple base stations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmission reception points (TRPs) and multiple panels are used to increase network capacity and data rates, then the overall system throughput and reliability are improved, but the complexity of scheduling transmission operations and managing uplink and downlink signals across multiple base stations increases
Solution Approach 1:
The patent segments the transmission process by introducing separate redundancy version indicators for different transport blocks within the same downlink grant. This allows independent control of redundancy versions for multiple transport blocks, simplifying the scheduling complexity while maintaining the benefits of multiple TRPs and panels for enhanced network capacity and throughput.
2Productivity
If multiple transport blocks are transmitted in a single downlink grant to increase data throughput, then the transmission efficiency is improved, but the complexity of managing and tracking redundancy versions across multiple transport blocks increases
Solution Approach 1:
The patent applies local quality by providing individual redundancy version indicators (RV0, RV1, RV2, RV3) for each transport block within a downlink grant. This allows each transport block to have its own redundancy version control, enabling efficient management of multiple transport blocks while maintaining high data throughput without increasing overall system complexity.
3Productivity
If dynamic channel mapping and beam management procedures are implemented to optimize signal transmission, then the signal transmission efficiency is improved, but the complexity of the protocol stack and scheduling mechanisms increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple redundancy version indicators (RV0-RV3) in the downlink grant before transmission. This allows the system to optimize signal transmission through dynamic channel mapping and beam management while maintaining protocol stack efficiency, as the redundancy version information is already prepared and available for immediate use without requiring complex real-time negotiations.
Data Source
AI summary
A wireless device receives an indication of a switching scheme for switching a first beam and a second beam over physical downlink shared channel (PDSCH) transmission occasions. The switching scheme is selected from a first switching scheme applying the first beam to a first PDSCH transmission occasion and the second beam to a second PDSCH transmission occasion and a second switching scheme applying the first beam to two first PDSCH transmission occasions and the second beam to two second PDSCH transmission occasions. The wireless device receives downlink control information indicating repetitions of a transport block (TB) via the PDSCH transmission occasions. The wireless device receives, based on the switching scheme, a first repetition of the repetitions of the TB with the first beam and a second repetition of the repetitions of the TB with the second beam.