Antenna Port Grouping with Shared PTRS for Uplink Error Reduction
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Solution Overview
Problem
The increasing number of antenna ports in wireless communication systems necessitates a clear definition of associations between reference signal ports to reduce transmission errors and improve communication efficiency.
Innovation Solution
The technique involves organizing antenna ports into groups based on characteristics such as UE support for coherent transmissions and modulation and coding schemes, associating these groups with phase-tracking reference signal (PTRS) ports to minimize transmission errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of antenna ports is increased to improve communication capacity, then the communication efficiency is improved, but the transmission errors increase and system complexity increases
Solution Approach 1:
The patent segments the large number of antenna ports into multiple port groups, where each group is associated with a dedicated PTRS port. This segmentation allows for more manageable phase tracking and reference signal management, reducing transmission errors while maintaining the high communication efficiency provided by the large number of antenna ports.
Solution Approach 2:
The patent introduces PTRS ports as intermediary elements that mediate between the antenna ports and the phase tracking function. Each PTRS port serves as a reference signal carrier for its associated antenna port group, enabling accurate phase estimation and error reduction without requiring each antenna port to independently manage phase tracking.
2Productivity
If the number of antenna ports is increased to improve communication capacity, then the communication efficiency is improved, but the device complexity increases
Solution Approach 1:
The patent divides the complex system of multiple antenna ports into smaller, more manageable units by grouping them into port groups. Each group is associated with a single PTRS port, which simplifies the overall system architecture and makes phase tracking and reference signal management more tractable despite the large total number of antenna ports.
Solution Approach 2:
The patent merges multiple antenna ports into port groups that share common PTRS ports. This merging reduces the total number of independent reference signal ports needed, thereby reducing device complexity while still supporting a large number of antenna ports for high communication efficiency.
3Reliability
If antenna ports are associated with PTRS ports to reduce transmission errors, then the transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by dedicating specific PTRS ports to specific antenna port groups based on their characteristics. This localized association optimizes phase tracking for each group while avoiding the need for a one-to-one mapping between all antenna ports and PTRS ports, thereby reducing configuration complexity while maintaining high transmission reliability.
Data Source
AI summary
Methods, apparatus, and systems that relate to associations of antenna ports and port groups for various types of reference signals are disclosed to help reduce transmission loss and enable effective communications between the base station and user equipment (UE). In one example aspect, a method for wireless communication includes configuring, by the base station, one or more phase-tracking reference signal (PTRS) ports that are associated with antenna ports in a number of antenna port groups. One or more antenna ports in an antenna port group share a same PTRS port. The method also includes performing, by the base station, the uplink transmission with a terminal device based on the one or more PTRS ports.