18032318. CODEBOOK AND PMI OVERRIDE IN DOWNLINK MU-MIMO TRANSMISSION simplified abstract (Telefonaktiebolaget LM Ericsson (publ))
Contents
CODEBOOK AND PMI OVERRIDE IN DOWNLINK MU-MIMO TRANSMISSION
Organization Name
Telefonaktiebolaget LM Ericsson (publ)
Inventor(s)
CODEBOOK AND PMI OVERRIDE IN DOWNLINK MU-MIMO TRANSMISSION - A simplified explanation of the abstract
This abstract first appeared for US patent application 18032318 titled 'CODEBOOK AND PMI OVERRIDE IN DOWNLINK MU-MIMO TRANSMISSION
Simplified Explanation
The patent application describes a method for operating a network node in a wireless communication system. Here are the key points:
- The network node receives a precoding matrix indicator (PMI) from a user equipment (UE). The PMI is based on an antenna-grouping codebook, which helps in determining the optimal precoding matrix for transmission.
- For downlink multi-user multiple input, multiple output (MU-MIMO) transmission, the network node selects a non-antenna-grouping codebook. This codebook is used for MU-MIMO transmission, where multiple UEs are served simultaneously.
- The network node determines a second PMI from the non-antenna-grouping codebook based on the first PMI received from the UE. This allows the network node to select the appropriate precoding matrix for MU-MIMO transmission.
- Based on the second PMI, the network node performs MU-MIMO pairing and beamforming towards the UE. This ensures efficient and optimized transmission to the UE.
Potential applications of this technology:
- This method can be applied in wireless communication systems, such as 4G LTE and 5G, to improve the efficiency and capacity of downlink MU-MIMO transmissions.
- It can be used in various network nodes, such as base stations, to enhance the performance of wireless networks and provide better user experience.
Problems solved by this technology:
- MU-MIMO transmission in wireless communication systems requires selecting the appropriate precoding matrix for each UE. This can be challenging when using different codebooks for different types of transmission.
- The method solves the problem of efficiently pairing and beamforming towards UEs in downlink MU-MIMO transmissions by using a non-antenna-grouping codebook.
Benefits of this technology:
- By using a non-antenna-grouping codebook, the method allows for more flexibility and optimized precoding matrix selection in downlink MU-MIMO transmissions.
- It improves the efficiency and capacity of wireless networks by enabling simultaneous transmission to multiple UEs.
- The method enhances the overall performance and user experience in wireless communication systems.
Original Abstract Submitted
A method of operating a network node includes receiving a first precoding matrix indicator, PMI, from a UE, wherein the first PMI is based on an antenna-grouping codebook, selecting a non-antenna-grouping codebook for downlink multi-user multiple input, multiple output, MU-MIMO transmission, determining a second PMI of the non-antenna-grouping codebook based on the first PMI of the antenna-grouping codebook, and performing MU-MIMO pairing and beamforming toward the UE based on the second PMI of the non-antenna-grouping codebook. Related network nodes are disclosed.
