Single-DCI Multi-Panel Uplink Scheduling
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Solution Overview
Problem
Current wireless communication networks face challenges in coordinating multi-TRP PUSCH transmissions at the panel level, lacking the ability to indicate information such as the PUSCH multiplexing scheme, precoder, or beam for each UE panel, and undefined UE behavior for uplink power control and power headroom reporting in multi-panel implementations.
Innovation Solution
The solution enables enhanced single-DCI-based multi-panel uplink transmissions by scheduling PUSCH transmissions and indicating transmission parameters at the panel level, using a unified TCI framework to provide beam indications and expanding multiplexing schemes to include FDM and SDM, while defining UE behavior for power control and power headroom reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-DCI multi-panel uplink transmissions are implemented without panel-level scheduling, then device complexity is reduced, but transmission reliability and adaptability deteriorate due to inability to coordinate multi-TRP transmissions at panel level
Solution Approach 1:
The patent segments the transmission configuration by introducing panel-level scheduling within single-DCI framework. Each antenna panel is independently configured with panel-specific TCI states, precoders, and multiplexing schemes, allowing differentiated control for multi-TRP transmissions while maintaining overall single-DCI coordination. This segmentation enables reliable multi-panel coordination without requiring multiple DCIs.
2Adaptability or versatility
If panel-level transmission parameter indication is added to enable multi-TRP coordination, then transmission adaptability improves, but DCI structure and processing complexity increase
Solution Approach 1:
The patent extracts panel-specific transmission parameters (TCI states, precoders, multiplexing schemes) from the general DCI structure and organizes them in a systematic panel-level configuration. This extraction allows the DCI to maintain a standardized format while incorporating necessary panel-specific information through efficient encoding, reducing processing complexity compared to fully customized panel-level DCIs.
Solution Approach 2:
The patent creates a universal panel-level configuration structure that can accommodate multiple transmission scenarios (multi-TRP, single-TRP, different multiplexing schemes) within a single DCI framework. This multi-functional design allows the same DCI structure to handle diverse transmission requirements without requiring separate specialized DCI formats for each scenario.
3Ease of operation
If unified TCI framework is used for beam indication across multiple panels, then implementation simplicity improves, but transmission precision deteriorates due to inability to provide panel-specific beam configurations
Solution Approach 1:
The patent applies local quality by introducing panel-specific TCI states within the unified TCI framework. Each antenna panel can be assigned dedicated TCI states that provide precise beam indications tailored to specific TRPs and transmission conditions. This local differentiation maintains implementation simplicity through the unified framework while achieving precise panel-level beam control.
Data Source
AI summary
Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving downlink control information (DCI) scheduling a first physical uplink shared channel (PUSCH) transmission to be transmitted by a first antenna panel of the UE, and a second PUSCH transmission to be transmitted by a second antenna panel of the UE, receiving data indicative of at least two transmission configuration indicator (TCI) states, the at least two TCI states including a first TCI state indicating a beam of the first antenna panel for transmission of the first PUSCH transmission, and a second TCI state indicating a beam of the second antenna panel for transmission of the second PUSCH transmission, and transmitting the first PUSCH transmission using the beam of the first antenna panel and the second PUSCH transmission using the beam of the second antenna panel.