17887899. ENHANCEMENT TO MULTI-USER MIMO BY CHANNEL STATE INFORMATION REPORTING simplified abstract (Apple Inc.)

ENHANCEMENT TO MULTI-USER MIMO BY CHANNEL STATE INFORMATION REPORTING

Organization Name

Apple Inc.

Inventor(s)

Louay Jalloul of San Jose CA (US)

Ghaith N. Hattab of Santa Clara CA (US)

ENHANCEMENT TO MULTI-USER MIMO BY CHANNEL STATE INFORMATION REPORTING - A simplified explanation of the abstract

This abstract first appeared for US patent application 17887899 titled 'ENHANCEMENT TO MULTI-USER MIMO BY CHANNEL STATE INFORMATION REPORTING

Simplified Explanation

Methods and systems are disclosed for configuring multi-user multiple-input multiple-output (MU-MIMO) operation by a base station and a plurality of user equipment (UEs). The key steps involved in this process are:

• Requesting sounding reference signals (SRS) or channel state information (CSI) data from each UE.
• Configuring a precoder matrix based on the SRS or CSI data received from each UE. This matrix allocates a set of precoded CSI-reference signal (CSI-RS) resources for each UE.
• Scheduling the precoded CSI-RS resources for each UE.
• Receiving a channel quality indicator (CQI) report from each UE, which is based on the precoded CSI-RS resources received by that UE.
• Generating a CQI matrix from the CQI reports of each UE.
• Selecting a subset of UEs from the plurality based on the CQI matrix.
• Scheduling downlink (DL) resources, including reference signals, for the subset of UEs.

Potential applications of this technology:

• Wireless communication systems using MU-MIMO technology.
• Cellular networks and base stations.
• 5G and beyond networks.

Problems solved by this technology:

• Efficient allocation of resources in MU-MIMO systems.
• Improved downlink communication performance.
• Enhanced user experience in wireless networks.

Benefits of this technology:

• Increased system capacity and throughput.
• Improved spectral efficiency.
• Enhanced user fairness and quality of service.
• Better utilization of available resources.

Original Abstract Submitted

Methods and systems are for configuring multi-user multiple-input multiple output (MU-MIMO) operation by a base station and a plurality of UEs include requesting sounding reference signals (SRS) or channel state information (CSI) data from each UE of the plurality; configuring, based on the SRS or CSI data from each UE, a precoder matrix, the precoder matrix allocating a plurality of precoded CSI-reference signal (CSI-RS) resources for each UE; scheduling, for each UE, the precoded CSI-RS resources; receiving, from each UE, a CQI report that is based on the precoded CSI-RS resources received by that respective UE; generating a CQI matrix from the CQI reports of each UE; selecting a subset of UEs from the plurality based on the CQI matrix; and scheduling DL resources for the subset of UEs, the DL resources including reference signals.