QCL-Based Channel Multiplexing in High-Frequency Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In high-frequency communication systems above 6 GHz, there is a lack of clear rules for determining whether multiple channels and signals can be multiplexed on the same symbol, leading to inconsistent understanding between base stations and terminals, resulting in incorrect reception of channels and signals.
Innovation Solution
A method and device for transmitting and receiving data transmission resources based on quasi-co-location (QCL) information and preset rules, allowing for consistent understanding of channel and signal parameters, enabling correct transmission by determining multiplexing capabilities and priorities of data transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple channels and signals are transmitted in high-frequency systems without clear multiplexing rules, then the system can support more data transmission resources, but the base station and terminal may inconsistently understand parameters resulting in incorrect reception
Solution Approach 1:
The patent applies preliminary action by establishing clear multiplexing rules and QCL parameter configurations before transmission occurs. The base station pre-configures QCL relationships and multiplexing patterns for multiple channels and signals, ensuring both transmitter and receiver have consistent understanding of transmission parameters beforehand, thus preventing reception errors while maintaining high data transmission capacity
Solution Approach 2:
The patent utilizes parameter changes by dynamically configuring QCL (Quasi-Co-Location) parameters and spatial relationship information for different channel and signal combinations. By adjusting parameters such as QCL type D configurations, spatial filters, and beamforming parameters based on channel conditions and multiplexing requirements, the system optimizes both transmission capacity and reception reliability in high-frequency environments
2Device complexity
If digital-analog hybrid beamforming is used to reduce complexity, then the number of AD/DA conversion devices and baseband processing complexity are reduced, but the spatial resolution and MU-MIMO performance are compromised
Solution Approach 1:
The patent applies local quality by implementing digital beamforming only in critical regions where high spatial resolution is needed (such as for control channels and reference signals requiring precise QCL measurements), while using analog beamforming for data channels where slight resolution degradation is acceptable. This selective approach maintains essential spatial resolution capabilities while significantly reducing overall system complexity and AD/DA conversion requirements
Solution Approach 2:
The patent segments the beamforming function into digital and analog domains, with digital beamforming handling QCL-related measurements and control functions, and analog beamforming handling bulk data transmission. This segmentation allows the system to achieve the necessary spatial resolution for accurate QCL parameter estimation while reducing complexity through analog processing for the remaining functions
Data Source
AI summary
A channel and signal transmission method and communication device are provided. The channel and signal transmission method applied to a communication device at a sending end includes: when transmitting at least two data transmission resources, send the data transmission resources, according to at least one of QCL information of the data transmission resources and a preset rule, where a data transmission resource includes at least one of a signal and a channel.