Multi-Panel Uplink PTRS Mapping for Phase Synchronization
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively configuring and transmitting phase tracking reference signals for simultaneous uplink transmission using multiple panels, which is crucial for enhancing communication performance in advanced mobile communication systems.
Innovation Solution
A method and device are provided to configure a phase tracking reference signal (PTRS) for simultaneous uplink transmission across multiple panels by utilizing higher layer signaling and downlink control information (DCI) to map uplink channels and PTRS to the same time-frequency resource, enabling coordinated transmission and reception points as a single frequency network (SFN).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phase tracking reference signals are configured for simultaneous uplink transmission using multiple panels, then communication performance is enhanced, but system complexity increases
Solution Approach 1:
The patent segments the phase tracking reference signal configuration by associating separate PTRS ports with different uplink channels from different panels. Each PTRS port is independently configured and transmitted, allowing phase tracking to be performed separately for each panel's transmission, thereby enhancing communication performance while managing system complexity through modular configuration.
2Productivity
If multiple uplink channels are transmitted simultaneously across multiple panels, then data transmission efficiency is improved, but signal synchronization becomes more difficult
Solution Approach 1:
The patent implements feedback-based phase tracking by transmitting phase tracking reference signals (PTRS) alongside each uplink channel. The base station measures the phase of received PTRS from multiple panels and feeds back phase difference information to the terminal. The terminal uses this feedback to adjust and compensate phase differences, ensuring precise signal synchronization while maintaining high data transmission efficiency through simultaneous multi-panel operation.
3Productivity
If phase tracking reference signals are mapped to the same time-frequency resource as uplink channels, then resource utilization is optimized, but signal interference increases
Solution Approach 1:
The patent merges the transmission of uplink channels and phase tracking reference signals by mapping PTRS to the same time-frequency resources as the associated uplink channels. This co-location strategy optimizes resource utilization by eliminating dedicated reference signal resources. To manage interference, the patent employs orthogonal cover codes and distinct PTRS port assignments for different panels, ensuring that reference signals from multiple panels can be differentiated and processed separately despite sharing the same physical resources.
Data Source
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AI summary
The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. Specifically, the present disclosure provides a method and device for uplink transmission considering simultaneous transmission across multiple panels.