Antenna Panel Transmission Modes With Shared Digital Channels
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Solution Overview
Problem
The challenge of implementing simultaneous transmission of multiple antenna panels in a 5G NR system is hindered by the limited digital channel capabilities of terminals, which cannot support simultaneous transmission of all antenna ports due to high digital channel costs.
Innovation Solution
A communication method and apparatus that enables simultaneous transmission of multiple antenna panels by sharing digital channels, utilizing precoding matrices and numbers of streams in different transmission modes, allowing antenna ports to share a common digital channel and optimizing transmission modes based on terminal capabilities.
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
Solution Approach 1:
The patent merges digital channels across multiple antenna panels by establishing a correspondence relationship between antenna panels and digital channels. When the number of antenna panels exceeds the number of digital channels, multiple antenna panels share the same digital channel resources, enabling simultaneous transmission without requiring independent digital channels for each panel.
Solution Approach 2:
The patent implements multi-functionality by allowing a single digital channel to serve multiple antenna panels simultaneously. The correspondence relationship between antenna panels and digital channels enables any digital channel to be utilized by multiple antenna panels in different time slots or transmission instances, maximizing resource utilization.
2Productivity
If digital channel resources are increased to support all antenna ports simultaneously, then transmission performance is improved, but cost increases
Solution Approach 1:
The patent combines multiple antenna panels under a limited number of digital channels by establishing a many-to-one correspondence relationship. This merging allows the system to achieve simultaneous transmission of multiple antenna panels using fewer digital channels than the total number of antenna ports, thereby reducing cost while maintaining performance.
Solution Approach 2:
The patent applies partial action by not assigning a dedicated digital channel to each antenna panel, but instead assigning digital channels to antenna panels based on transmission needs. The system dynamically determines which antenna panels can use which digital channels, allowing partial coverage that is sufficient for the transmission task without excessive resource allocation.
3Productivity
If multiple antenna panels transmit simultaneously with independent digital channels, then transmission capacity is improved, but implementation complexity increases
Solution Approach 1:
The patent segments the transmission process into discrete time slots or transmission instances. Within each time slot, the system determines which antenna panels can simultaneously use which digital channels based on the correspondence relationship. This segmentation simplifies the scheduling and control logic compared to managing fully independent parallel transmissions.
Solution Approach 2:
The patent implements dynamic resource allocation where the correspondence relationship between antenna panels and digital channels can change based on transmission requirements. The system dynamically adjusts which antenna panels share which digital channels in different time slots, providing flexibility while maintaining manageable complexity through dynamic rather than static configuration.
Data Source
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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.