Samsung electronics co., ltd. (20240333358). PMI FEEDBACK-BASED CALIBRATION IN DISTRIBUTED MIMO simplified abstract
Contents
PMI FEEDBACK-BASED CALIBRATION IN DISTRIBUTED MIMO
Organization Name
Inventor(s)
R A Nadisanka Perera Rupasinghe of Mckinney TX (US)
Thuy Van Nguyen of Dallas TX (US)
Jianzhong Zhang of Dallas TX (US)
PMI FEEDBACK-BASED CALIBRATION IN DISTRIBUTED MIMO - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240333358 titled 'PMI FEEDBACK-BASED CALIBRATION IN DISTRIBUTED MIMO
The abstract describes a method for operating a network entity that involves receiving a sounding reference signal (SRS) from a user equipment (UE) through two transmission points (TRPs) and estimating a channel based on the received SRS. The method includes transmitting Channel State Information Reference Signals (CSI-RS) with different polarizations and phase offsets, receiving Precoding Matrix Indicator (PMI) reports from the UE, and updating the phase offset based on the co-phasing information provided in the PMI reports. The method aims to determine a phase mismatch for phase calibration between the two TRPs.
- Receiving SRS from UE via two TRPs and estimating the channel
- Transmitting CSI-RS with different polarizations and phase offsets for n iterations
- Receiving PMI reports from UE with co-phasing information
- Updating phase offset based on co-phasing information
- Determining phase mismatch for phase calibration between TRPs
Potential Applications: - Wireless communication systems - 5G networks - Beamforming technologies
Problems Solved: - Improving channel estimation accuracy - Enhancing beamforming performance - Optimizing phase calibration between transmission points
Benefits: - Increased network efficiency - Enhanced signal quality - Improved overall system performance
Commercial Applications: Title: Advanced Beamforming Technology for 5G Networks This technology can be utilized in telecommunications companies to enhance the performance of 5G networks, improve signal quality, and optimize beamforming capabilities. It can also be integrated into wireless communication systems to boost network efficiency and provide better user experiences.
Questions about the technology: 1. How does this method improve channel estimation accuracy in wireless communication systems? 2. What are the key advantages of using different polarizations and phase offsets in transmitting CSI-RS for beamforming applications?
Original Abstract Submitted
a method of operating a network entity includes receiving, from a ue, via a first trp and a second trp, a srs, and estimating a channel based on the received srs. the method further includes, for n iterations: transmitting, via the first trp, a csi-rs with a first polarization; transmitting, via the second trp, the csi-rs with a second polarization and a controlled phase offset; receiving, from the user equipment ue, a pmi report associated with the csi-rs including co-phasing information between the first polarization and the second polarization; and updating the controlled phase offset, based on the co-phasing information. after the n iterations, the method further includes, based on the controlled phase offset and the co-phasing information, determining a phase mis-match for phase calibration between the first trp and the second trp.
