PT-RS Power Boosting Configuration for Wireless Terminals
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Solution Overview
Problem
In wireless communication systems, accurately determining the phase tracking reference signal (PT-RS) power boosting level for each demodulation reference signal (DM-RS) port group is challenging, especially when different DM-RS port groups have varying numbers of physical downlink shared channel (PDSCH) layers, leading to increased hardware and management costs.
Innovation Solution
A method where a user equipment (UE) receives information from a base station on whether PT-RS power boosting based on the number of layers is applied for each DM-RS port group, allowing the UE to calculate and determine the PT-RS power boosting level for each group, which can be preconfigured using a look-up table, without requiring additional power for the existing power amplifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If PT-RS power boosting is applied uniformly across all DM-RS port groups, then implementation complexity is reduced, but measurement precision deteriorates due to inability to account for varying layer configurations
Solution Approach 1:
The patent segments the DM-RS ports into multiple port groups, where each group can have independent PT-RS power boosting levels configured based on the number of layers. This allows differentiated power boosting for different port groups (e.g., port group 0 with 1 layer, port group 1 with 2 layers) while maintaining manageable complexity through group-based configuration rather than individual port configuration.
Solution Approach 2:
The patent applies local quality by allowing different PT-RS power boosting levels to be configured for different DM-RS port groups based on their specific layer configurations. Each port group receives tailored power boosting appropriate to its layer count, optimizing phase tracking performance for each group's specific characteristics rather than applying a uniform approach.
2Measurement precision
If separate PT-RS power boosting configuration is implemented for each DM-RS port group, then measurement precision improves, but device complexity increases due to additional configuration management
Solution Approach 1:
By segmenting ports into groups with representative configurations, the patent reduces the configuration burden. Instead of managing separate PT-RS power boosting for each individual port, the system manages configuration at the group level, where one configuration per group represents multiple ports with similar layer characteristics.
Solution Approach 2:
The patent creates universal configuration parameters that can represent multiple ports within a group. The PT-RS power boosting configuration for each port group serves as a universal setting that applies to all ports within that group, eliminating the need for separate configurations and reducing overall management complexity while maintaining precision through group-based differentiation.
3Measurement precision
If PT-RS power boosting is configured for each individual DM-RS port, then measurement precision is maximized, but device complexity and signaling overhead increase significantly
Solution Approach 1:
The patent segments the large number of individual ports into smaller port groups, reducing the configuration overhead. Instead of configuring PT-RS power boosting for each individual port separately, the system configures at the group level, significantly reducing the number of configuration parameters and signaling messages required while maintaining adequate precision through group-based representation.
Solution Approach 2:
The patent employs universal configuration parameters at the port group level that can represent and control multiple individual ports. Each port group configuration serves as a universal setting for all ports within that group, eliminating the need for repetitive individual port configurations and reducing signaling overhead by consolidating multiple port configurations into single group-level parameters.
Data Source
AI summary
Disclosed are a method for receiving a phase tracking reference signal by a terminal in a wireless communication system and an apparatus supporting the same. According to one embodiment applicable to the present invention, a terminal may receive a phase tracking reference signal from multiple demodulation reference signal port groups on the basis of information on whether power boosting is applied to a phase tracking reference signal according to the number of layers of each of the multiple demodulation reference signal port groups from a base station.