Terminal Antenna Panel Transmission with Shared Digital Channels
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Solution Overview
Problem
In 5G NR communication systems, the simultaneous transmission of multiple antenna panels by a terminal is hindered due to limited digital channel capabilities, which cannot support all antenna ports.
Innovation Solution
A communication method and apparatus that enables simultaneous transmission of multiple antenna panels by sharing digital channels, utilizing precoding matrices and stream numbers corresponding to different parts or the same part of a transport block, and indicating transmission modes to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If independent digital channels are configured for each antenna panel to enable simultaneous transmission, then transmission capability is improved, but device complexity and cost increase due to limited terminal capabilities
Solution Approach 1:
Multiple antenna panels share common digital channels instead of having independent digital channels for each panel. The patent combines the digital channel resources across antenna panels, allowing panels to multiplex signals on shared digital channels while maintaining simultaneous transmission capability, thus reducing the total number of digital channels required.
Solution Approach 2:
A single digital channel is designed to serve multiple antenna panels simultaneously. The patent implements a universal digital channel that can carry signals from different antenna panels through precoding operations, enabling one channel to perform the function that would traditionally require multiple dedicated channels.
2Productivity
If multiple antenna panels transmit simultaneously to achieve wide-area coverage, then system performance is improved, but signaling overhead increases due to need for precoding matrix indication
Solution Approach 1:
Instead of indicating complete precoding matrix information for all antenna panels, the patent uses a compact indication mechanism that provides only the necessary precoding information for the shared digital channels. This partial indication approach reduces signaling overhead while maintaining the ability to configure simultaneous multi-panel transmission.
Solution Approach 2:
The patent changes the parameter representation from detailed per-panel precoding matrix indicators to a condensed format that indicates precoding information at the digital channel level. This parameter transformation reduces the amount of signaling required while preserving the essential precoding configuration needed for simultaneous transmission.
Data Source
AI summary
A communication method and a communication apparatus are disclosed, related to the communication field. The method includes: A terminal sends data to a network device based on first information sent by the network device. The first information indicates a transmission mode and a plurality of precoding matrices corresponding to a plurality of antenna panels. The transmission mode is a first transmission mode or a second transmission mode. An antenna port set used by each antenna panel of the terminal in the first transmission mode or the second transmission mode is a part of an antenna port set used by the terminal in a third transmission mode. The first transmission mode is an SDM mode, the second transmission mode is an SFN mode, and the third transmission mode is an sTRP mode.