Multi-Panel PUSCH Transmission for Uplink Rate
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Solution Overview
Problem
Current specifications cannot support parallel transmissions of Physical Uplink Shared Channels (PUSCH) from multiple antenna panels, resulting in a lower transmission rate.
Innovation Solution
A data transmission method that involves receiving PUSCH scheduling information with indication of a precoding matrix, mapping data layers onto multiple target antenna panels, and using beam-training signals to acquire target transmission beams for simultaneous transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PUSCH is transmitted from a single antenna panel at a time, then the transmission complexity is low, but the transmission rate is limited
Solution Approach 1:
The patent divides the antenna system into multiple independent antenna panels, each capable of transmitting PUSCH simultaneously. The scheduling grant indicates multiple SRI (Sounding Reference Signal Indicator) values, where each SRI corresponds to a specific antenna panel. This segmentation allows parallel transmission from multiple panels, increasing transmission rate while maintaining manageable complexity through independent panel control
Solution Approach 2:
The patent transitions from single-panel transmission to multi-panel transmission by adding a spatial dimension. Multiple antenna panels operate in parallel across different spatial locations, enabling simultaneous PUSCH transmissions. The system maps multiple data layers to multiple antenna panels, effectively utilizing spatial diversity to boost throughput without proportionally increasing processing complexity
2Productivity
If multiple antenna panels transmit PUSCH simultaneously, then the transmission rate increases, but the specification support and system compatibility decrease
Solution Approach 1:
The patent extends the existing single-panel PUSCH transmission mechanism to support multi-panel operation. The scheduling grant structure is enhanced to include multiple SRI values, allowing the same basic PUSCH transmission framework to function in both single-panel and multi-panel modes. This universal approach maintains backward compatibility while enabling advanced multi-panel transmission when needed
3Measurement precision
If beam-training signals are transmitted on multiple antenna panels, then the target transmission beam acquisition is improved, but the signal interference and training overhead increase
Solution Approach 1:
The patent performs beam-training signal transmission before actual PUSCH transmission. Each antenna panel first transmits beam-training signals using different beams, allowing the network to measure and identify the optimal transmission beam for each panel. Only after this preliminary beam training does the system proceed to data transmission, ensuring that interference during beam training does not affect subsequent communication performance
Solution Approach 2:
The beam-training signals are transmitted in periodic intervals separated from the actual PUSCH transmission time. This temporal separation ensures that beam-training overhead and associated interference are confined to specific training periods, allowing normal communication to proceed without continuous disruption. The periodic nature also enables efficient resource utilization by concentrating training activities in dedicated time slots
Data Source
AI summary
A data transmission method, a terminal, and a network device are provided. The transmission method includes receiving physical uplink shared channel PUSCH scheduling information sent by a network device, wherein the PUSCH scheduling information includes first indication information and second indication information, and the first indication information is used to indicate a data layer comprised in a PUSCH, the second indication information is used to indicate a precoding matrix; mapping, according to the precoding matrix indicated by the second indication information, the data layer included in the PUSCH onto at least two target antenna panels for transmission, wherein the target antenna panels are antenna panels, for transmitting the PUSCH, among the at least two antenna panels of the terminal.