18266868. NETWORK NODE AND METHOD FOR CREATING A PRECODER IN A WIRELESS COMMUNICATIONS NETWORK simplified abstract (Telefonaktiebolaget LM Ericsson (publ))
NETWORK NODE AND METHOD FOR CREATING A PRECODER IN A WIRELESS COMMUNICATIONS NETWORK
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
NETWORK NODE AND METHOD FOR CREATING A PRECODER IN A WIRELESS COMMUNICATIONS NETWORK - A simplified explanation of the abstract
This abstract first appeared for US patent application 18266868 titled 'NETWORK NODE AND METHOD FOR CREATING A PRECODER IN A WIRELESS COMMUNICATIONS NETWORK
Simplified Explanation
The abstract describes a method performed by a network node for creating a precoder to form a Downlink (DL) beam for MIMO communication in a wireless network. The method involves obtaining channel estimates, selecting precoder candidates, and creating the precoder based on a linear combination of the candidates.
- Obtaining matched filter channel estimates for an Uplink (UL) signal from the UE.
- Obtaining a hypothesis testing space within a precoder codebook based on the channel estimates.
- Selecting a set of precoder candidates from the codebook.
- Creating the precoder for the DL beam by calculating a linear combination of the selected candidates.
Potential Applications
- Wireless communication systems
- MIMO technology
- Beamforming techniques
Problems Solved
- Improving signal quality in wireless communication
- Enhancing data transmission efficiency
- Mitigating interference in MIMO systems
Benefits
- Increased data rates
- Improved signal reliability
- Enhanced network capacity
Original Abstract Submitted
A method performed by a network node for creating a precoder for forming a Downlink, DL, beam between the network node and a User Equipment, UE, which DL beam is for reciprocity-based Multiple Input Multiple Output, MIMO, communication in a wireless communications network is provided. The network node obtains matched filter channel estimates for an Uplink, UL, signal, based on a reference signal from the UE known by the network node. The network node obtains a hypothesis testing space within a first precoder codebook, of one polarization, based on the matched filter channel estimates. The network node selects a set of precoder candidates out of the first precoder codebook in accordance with the hypotheses testing space. The network node creates the precoder for forming the DL beam between the network node and the UE, based on calculating a linear combination of the precoder candidates in the set of precoder candidates.
