PTRS Pattern Configuration for Phase Noise Compensation
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Solution Overview
Problem
High-frequency next-generation wireless communications networks face increased phase noise levels, leading to higher phase errors in transmitted signals, which are not efficiently addressed by existing phase tracking reference signals (PTRS) due to high resource overheads and inflexible configuration.
Innovation Solution
A communication method that dynamically configures PTRS patterns based on modulation and coding schemes and scheduled bandwidths, reducing PTRS overheads and improving spectral efficiency while maintaining phase noise error compensation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PTRS is sent continuously in time domain and through frequency division on multiple ports, then phase noise estimation accuracy is improved, but resource overhead increases
Solution Approach 1:
The patent applies dynamics by making the PTRS configuration flexible and adaptive rather than fixed. The network device dynamically determines PTRS patterns based on terminal feedback information, allowing the system to adjust PTRS density and distribution according to actual channel conditions and requirements, thereby optimizing the balance between estimation accuracy and resource consumption
Solution Approach 2:
The patent changes key parameters of PTRS configuration including time domain density, frequency domain density, and port allocation. By adjusting these parameters based on terminal feedback, the system can reduce resource overhead while maintaining adequate phase noise estimation performance for different service scenarios
2Device complexity
If fixed port configuration is used for PTRS, then device complexity is reduced, but adaptability to different terminals and scenarios deteriorates
Solution Approach 1:
The patent implements dynamic port configuration where the network device determines PTRS port allocation based on terminal feedback information. This allows the system to adapt port configuration to different terminal capabilities, service types, and channel conditions without requiring complex manual configuration
Solution Approach 2:
The patent creates a universal PTRS configuration mechanism that can serve multiple terminals and service scenarios through a unified feedback-based approach. The same configuration framework adapts to different situations by processing terminal feedback, eliminating the need for separate fixed configurations for each scenario
3Productivity
If high data bandwidth is used, then throughput is improved, but quantity of subcarriers occupied by PTRS increases resulting in higher overheads
Solution Approach 1:
The patent applies local quality by distributing PTRS non-uniformly across frequency resources based on terminal feedback. Instead of using fixed density across all subcarriers, the system adjusts PTRS placement and density locally according to actual channel conditions, reducing total PTRS overhead while maintaining estimation accuracy where needed
Solution Approach 2:
The patent uses partial action by sending PTRS only where necessary based on terminal feedback information. The system determines optimal PTRS density and locations rather than uniformly distributing them, achieving adequate phase noise estimation with reduced overall PTRS resource consumption
Data Source
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AI summary
This application discloses a communication method and a communications apparatus. The method includes: determining, by a first device, a phase tracking reference signal PTRS pattern, where the PTRS pattern includes one or more PTRS chunks, and each PTRS chunk includes one or more PTRS samples; and mapping, by the first device, a PTRS to one or more symbols, and sending the one or more symbols to a second device.