Beam RSRP Reporting With Antenna and Polarization Granularity
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Solution Overview
Problem
Traditional methods of determining reference signal received power (RSRP) in wireless communications lack sufficient granularity and do not adequately consider the complexities of beam reporting, particularly in relation to antenna orientation and polarization, leading to suboptimal communication performance.
Innovation Solution
Implement robust beam reporting methods that include a feedback loop between base stations and user equipment, taking into account various communication details such as antenna orientations, polarization, and channel estimation protocols to provide more accurate and detailed feedback for beam calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional RSRP determination methods are used, then the measurement process is simple, but the measurement precision is insufficient due to lack of granularity in beam reporting
Solution Approach 1:
The patent segments the beam reporting process by introducing multiple reference signal resources (CSI-RS resources) with different antenna ports and polarization configurations. Instead of a single RSRP measurement, the system performs segmented measurements across multiple reference signal resources, allowing precise identification of optimal beams based on specific antenna orientations and polarizations. This segmentation enables granular beam reporting while maintaining manageable system complexity through structured resource allocation.
Solution Approach 2:
The patent adds dimensional granularity to beam reporting by introducing antenna port indices and polarization information as additional measurement dimensions. The RSRP measurement is extended from a single scalar value to a multi-dimensional report that includes measurements across different antenna ports (e.g., ports 0-3) and polarization states. This dimensional expansion provides precise beam identification without overwhelming complexity through systematic resource signaling.
2Productivity
If beam reporting includes detailed antenna orientation and polarization information, then the communication efficiency is improved, but the feedback loop complexity increases
Solution Approach 1:
The system performs preliminary configuration of reference signal resources before actual beam reporting. The base station pre-configures multiple CSI-RS resources with specific antenna port assignments and polarization settings, and signals these configurations to the UE in advance. This preliminary action allows the UE to perform targeted measurements without needing to process complex real-time decisions, thereby improving communication efficiency while managing feedback complexity through structured pre-planning.
Solution Approach 2:
The patent implements an enhanced feedback mechanism where the UE reports not only RSRP values but also associated antenna port indices and reference signal resource identifiers. This structured feedback provides the base station with precise information about which antenna configurations perform best, enabling efficient beam selection. The feedback loop manages complexity by organizing reports around pre-configured reference signal resources rather than requiring free-form complex descriptions.
3Measurement precision
If multiple reference signal resources are used for beam measurement, then the beam identification accuracy is improved, but the processing time increases
Solution Approach 1:
The system employs periodic transmission of reference signals across multiple antenna ports and polarization states. Instead of sequentially measuring all possible beams in real-time, the base station transmits reference signal resources periodically with different antenna port configurations. The UE performs measurements on these periodic transmissions, allowing accurate beam identification through time-averaged measurements rather than rapid sequential sampling, thereby reducing processing time while maintaining precision.
Data Source
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AI summary
A system and method for performing robust beam reporting is disclosed. In one embodiment, a method performed by a first communication node includes: receiving at least one reference signal; determining at least one reference signal received power (RSRP) value associated with the at least one reference signal; generating a RSRP report in accordance with a predetermined format that groups the at least one RSRP value into N sets of RSRP values, each set containing at least one RSRP value, and associates each of the N sets of RSRP values with a respective one of N sets of resource groups, wherein each set of resource groups contains at least one resource group, and N is a positive integer; and transmitting the RSRP report.