View source for 18032318. CODEBOOK AND PMI OVERRIDE IN DOWNLINK MU-MIMO TRANSMISSION simplified abstract (Telefonaktiebolaget LM Ericsson (publ))

=CODEBOOK AND PMI OVERRIDE IN DOWNLINK MU-MIMO TRANSMISSION=


==Organization Name==

[[:Category:Telefonaktiebolaget LM Ericsson (publ)|Telefonaktiebolaget LM Ericsson (publ)]]


[[Category:Telefonaktiebolaget LM Ericsson (publ)]]

==Inventor(s)==

[[:Category:Yongquan Qiang of Ottawa (CA)|Yongquan Qiang of Ottawa (CA)]][[Category:Yongquan Qiang of Ottawa (CA)]]

[[:Category:Chaocheng Tu of Kanata (CA)|Chaocheng Tu of Kanata (CA)]][[Category:Chaocheng Tu of Kanata (CA)]]

[[:Category:Shaohua Li of Kanata (CA)|Shaohua Li of Kanata (CA)]][[Category:Shaohua Li of Kanata (CA)]]

==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.



[[Category:H04B7/06]]
[[Category:H04B7/0452]]