# US 12,184,378 B2 · Variable port mapping configurations for beamforming in antenna arrays

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- Number: US 12,184,378 B2
- Document ID: US12184378B2
- Status: Granted
- Kind: B2
- Application number: 18/223,018
- Filed: 2023-07-17
- Published: 2023-11-09
- Granted: 2024-12-31
- Earliest claimed: 2021-09-08
- Assignees: T-Mobile Innovations LLC
- Applicants: T-Mobile Innovations LLC
- Inventors: Sanghoon Sung; Udit Anilbhai Thakore
- Web page: https://patentgrep.com/patent/US12184378B2

## CPC

- H04B 7/0691: {using subgroups of transmit antennas}
- H04B 7/0693: {switching off a diversity branch, e.g. to save power}
- H04B 7/0608: {Antenna selection according to transmission parameters}
- H04B 7/0802: {using antenna selection (H04B7/0868 takes precedence; antenna beam directivity switching H01Q3/24)}
- H04B 7/0857: {using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]}
- H04B: TRANSMISSION

## Abstract

Systems, methods, and computer-readable media herein modify the configuration of one or more antenna elements of an antenna array based on signal quality information associated with one or more UE devices. The signal quality information of the UE devices can be analyzed by a base station and the base station can respond to the change in signal quality of the UE devices by modifying one or more antenna elements from a first mapping to a second mapping to improve the quality of transmissions between the UE devices and a base station.

## Claims

### Claim 1

A method for dynamically assigning one or more antenna elements of an antenna array, the method comprising:
transmitting, from a base station, a first set of reference signals using a first set of antenna elements in a first mapping;
receiving a first message from a user equipment (UE) comprising a signal to interference noise ratio (SINR) value of the first set of reference signals; and
in response to receiving the first message, transmitting, from the base station, a second set of reference signals using a second set of antenna elements in a second mapping, the second mapping being different than the first mapping;
transmitting a second set of reference signals to the UE using the second set of antenna elements in the second mapping, the second set of antenna elements comprising a greater number antenna elements than the first set of antenna elements; and
receiving, from the UE, a second message indicating that the SINR value of the second set of reference signals is an improvement to the SINR value of the first set of reference signals.

### Claim 2 (depends on 1)

The method of claim 1, wherein transmitting the second set of reference signals using the second mapping results in the second set of reference signals propagating a greater distance from the base station than the first set of reference signals transmitted using the first mapping.

### Claim 3

A system for dynamic assignment of one or more antenna elements of an antenna array, the system comprising:
a plurality of antenna elements; and
one or more computer processing components configured to perform operations comprising:
transmitting a first set of reference signals to a user equipment (UE) using a first set of antenna elements in a first mapping;
receiving a first message from the UE comprising a signal to interference noise ratio (SINR) value of the first set of references signals;
in response to receiving the first message, communicating a radio configuration message to the UE using a second set of antenna elements in a second mapping;
transmitting a second set of reference signals to the UE using the second set of antenna elements in the second mapping, the second set of antenna elements comprising a greater number antenna elements than the first set of antenna elements; and
receiving, from the UE, a second message indicating that the SINR value of the second set of reference signals is an improvement to the SINR value of the first set of reference signal.

### Claim 4 (depends on 3)

The system of claim 3, wherein transmitting the second set of reference signals using the second mapping results in the second set of reference signals propagating a greater distance from the base station than the first set of reference signals transmitted using the first mapping.

### Claim 5

One or more non-transitory computer-readable media having computer-executable instructions embodied thereon that, when executed, perform a method for configuring one or more antenna elements of an antenna array, the method comprising:
transmitting a first set of reference signals to a user equipment (UE) using a first set of antenna elements in a first mapping;
receiving a first measurement report from the UE comprising a signal to interference noise ratio (SINR) value of the first set of references signals;
in response to receiving the first message, communicating a radio configuration message to the UE using a second set of antenna elements in a second mapping;
transmitting a second set of reference signals to the UE using the second set of antenna elements in the second mapping, the second set of antenna elements comprising a greater number antenna elements than the first set of antenna elements; and
receiving, from the UE, a second message indicating that the SINR value of the second set of reference signals is an improvement to the SINR value of the first set of reference signal.

### Claim 6 (depends on 5)

The non-transitory computer readable media of claim 5, wherein transmitting the second set of reference signals using the second mapping results in the second set of reference signals propagating a greater distance from the base station than the first set of reference signals transmitted using the first mapping.