Transmission Parameter Mapping Between TCI States and CDM Groups
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Solution Overview
Problem
Existing communication systems, particularly in distributed MIMO and CF-MIMO, face challenges in determining appropriate transmission parameters to adapt to diverse and dynamic service requirements due to the dispersed spatial distribution of access points and varying user equipment densities, leading to inefficiencies and reliability issues.
Innovation Solution
A method and apparatus that determine transmission parameters by establishing an association relationship between transmission configuration indicator (TCI) states and code division multiplexing (CDM) groups, allowing multiple TCI states to be associated with a CDM group, thereby improving communication efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple TCI states are associated with multiple CDM groups to adapt to diverse service requirements, then communication efficiency and reliability are improved, but the complexity of determining transmission parameters increases
Solution Approach 1:
The patent segments the association relationship between TCI states and CDM groups by introducing a first association relationship between TCI states and CDM groups, and a second association relationship between CDM groups and antenna ports. This segmentation allows the complex parameter determination to be broken down into manageable steps, reducing the overall complexity while maintaining the ability to handle multiple service requirements
Solution Approach 2:
The patent introduces a new dimension of association by linking TCI states not only to CDM groups but also to antenna ports through intermediate associations. This multi-dimensional association structure enables more flexible transmission parameter determination without requiring a direct complex mapping between TCI states and all possible transmission configurations
2Area of stationary object
If dispersed access points serve multiple user equipment simultaneously to cover larger areas, then system coverage is improved, but transmission parameter determination becomes more difficult
Solution Approach 1:
The patent creates a universal association framework where TCI states can be associated with multiple CDM groups, which in turn can be associated with multiple antenna ports. This multi-functional association structure allows the same framework to handle various transmission scenarios across dispersed access points, simplifying parameter determination while maintaining broad system coverage
Solution Approach 2:
The patent introduces CDM groups as intermediary elements between TCI states and antenna ports. This intermediary structure serves as a bridge that simplifies the determination of transmission parameters by providing a standardized association layer that can be applied across different dispersed access point configurations
Data Source
AI summary
Provided in the present application are a transmission parameter determination method and apparatus. The method comprises: receiving control information; determining, according to the control information, an association relationship between M transmission configuration indicator (TCI) states and N code division multiplexing (CDM) groups, M being greater than or equal to N, and M and N being both positive integers; and then determining, according to the association relationship between the M TCI States and the N CDM groups, a transmission parameter.