PTRS Configuration for Multi-LO Phase Noise Estimation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing PTRS designs in multi-antenna systems face issues of high overheads, inefficient resource utilization, and poor flexibility, leading to inaccurate phase noise estimation due to varying local oscillators across different transmission nodes.
Innovation Solution
A method and device for configuring and determining PTRS parameters, including power, precoding, density, and sequence configurations, using control information and implicit rules to optimize PTRS transmission and feedback, reducing interference and improving estimation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PTRS is transmitted in multi-antenna systems with different local oscillators, then phase noise estimation can be performed, but reference signal overheads increase and resource utilization becomes inefficient
Solution Approach 1:
The patent segments the PTRS transmission by associating different PTRS ports with different local oscillators (LOs) in a one-to-one correspondence relationship. This segmentation allows each PTRS port to be dedicated to a specific LO, enabling accurate phase noise estimation for each oscillator independently while avoiding the need for multiple PTRS signals simultaneously, thus reducing overall overhead.
Solution Approach 2:
The patent applies local quality by configuring different PTRS ports with different local oscillators having distinct characteristics. Each PTRS port is locally optimized for its associated LO, allowing the system to account for oscillator-specific phase noise characteristics. This localized approach improves estimation accuracy for each LO while maintaining efficient resource utilization by avoiding redundant signals.
2Measurement precision
If multiple PTRS ports are configured with different local oscillators, then phase noise estimation accuracy improves, but device complexity increases
Solution Approach 1:
The patent implements universality by establishing a universal mapping relationship between PTRS ports and local oscillators that can be applied across different transmission nodes. The control information mechanism provides a universal way to configure and indicate the association between PTRS ports and LOs, simplifying the complexity through standardized procedures while maintaining the ability to handle multiple oscillators with different characteristics.
Solution Approach 2:
The patent employs feedback mechanisms where control information is transmitted to indicate the configuration of PTRS ports and their associated local oscillators. This feedback allows the receiving end to properly configure and interpret the PTRS signals, ensuring accurate phase noise estimation while simplifying the overall system complexity through automated configuration based on the control information.
3Measurement precision
If PTRS configuration parameters are optimized for specific local oscillators, then estimation performance improves, but flexibility and adaptability reduce
Solution Approach 1:
The patent applies dynamics by enabling dynamic configuration of PTRS ports with different local oscillators based on system needs. The control information mechanism allows flexible assignment and reassignment of PTRS ports to different LOs, adapting the system to various transmission scenarios. This dynamic approach maintains optimization for specific oscillators while preserving overall system flexibility through configurable mappings.
Solution Approach 2:
The patent utilizes parameter changes by allowing the system to modify the association parameters between PTRS ports and local oscillators. Different configuration parameters can be changed to adapt to different transmission conditions, oscillator characteristics, or system requirements. This parameter flexibility enables the system to maintain high estimation accuracy for specific LOs while adapting to various operational scenarios through reconfiguration.
Data Source
AI summary
Provided are phase tracking reference signal (PTRS) configuration, determination and information feedback methods and devices. The PTRS configuration method includes: transmitting, by a first node, the control information to a second node, where the control information is used for indicating a configuration parameter of the PTRS to the second node and the PTRS is transmitted by the first node or the second node. The second node determines the configuration parameter of the PTRS through the control information transmitted by the first node and/or an agreed implicit rule. A third node transmits control information to a fourth node, where the control information is used for feeding received power or quality information of the PTRS back to the fourth node.