公开(公告)号：US20240380468A1

公开(公告)日：2024-11-14

申请号：US18692715

申请日：2022-09-15

Applicant: CommScope Technologies LLC

Inventor： Arthur J. Barabell ,  Ehsan Daeipour ,  Stuart D. Sandberg ,  Balaji B Raghothaman

IPC: H04B7/06 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/0495 ,  H04B7/08 ,  H04L5/00 ,  H04W72/1273 ,  H04W74/0833

Abstract: Systems and methods for flexible antenna configurations and beamforming are provided. In one example, a system includes: at least one controller configured to implement at least some functions for one or more layers of a wireless interface used to communicate with UEs; remote unit(s) communicatively coupled to the at least one controller; and antenna elements communicatively coupled to the remote unit(s), each respective antenna element oriented in a respective direction different than other antenna elements. The at least one controller is configured to: determine a location of a UE in a cell of the system and/or channels between the antenna elements and the UE; select antenna element(s) for use in transmitting downlink signals to the UE based on the location of the UE and/or the channels between the antenna elements and the UE; and transmit downlink signals to the UE via the selected antenna element(s) in a first time period.

公开(公告)号：US11901995B2

公开(公告)日：2024-02-13

申请号：US17743910

申请日：2022-05-13

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman ,  Stuart D. Sandberg

IPC: H04B7/02 ,  H04B7/06 ,  H04B7/0456

CPC classification number: H04B7/0639 ,  H04B7/0456 ,  H04B7/0626

Abstract: One embodiment is directed to determining a composite precoder for transmitting to a UE using a group of one or more of the radio units by doing the following: for each of a plurality of subsets of the radio units, transmitting separate reference signals from the different antennas of only the radio units included in that subset; receiving subset-specific preferred precoder index reports from the UE for at least each individual radio unit included in the group of one or more of the radio units; determining the composite precoder for the UE using the subset-specific preferred precoder index reports from the UE for at least the one or more radio units included in the group; and using the composite precoder for transmitting to the UE using the one or more radio units included in the group. In some embodiments, each of the subsets includes less than all of the radio units.

公开(公告)号：US11411589B2

公开(公告)日：2022-08-09

申请号：US16685922

申请日：2019-11-15

Applicant: CommScope Technologies LLC

Inventor： Stuart D. Sandberg ,  Balaji B Raghothaman

IPC: H04B1/10 ,  H04B17/336 ,  H04B7/0456 ,  H04B7/0452

Abstract: This disclosure relates to Multi-User Multiple-Input-Multiple-Output (MU-MIMO) (including without limitation Distributed MU-MIMO (D-MU-MIMO)) communication techniques that employ interference suppression (IS) precoding schemes (including, for example, precoding schemes that use local interference suppression and precoding schemes that use global interreference suppression).

公开(公告)号：US11375473B2

公开(公告)日：2022-06-28

申请号：US17027215

申请日：2020-09-21

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman

IPC: H04W64/00 ,  H04W88/08 ,  H04W88/12

Abstract: Techniques for determining if a given remote unit of a centralized radio access network (C-RAN) has physically moved are disclosed. This can be done, for example, by determining signal reception metrics for other remote units in the C-RAN based on at least one transmission associated with the given remote unit and determining if the given remote unit has physically moved as a function of the signal reception metrics for the other remote units.

公开(公告)号：US10887862B2

公开(公告)日：2021-01-05

申请号：US16783479

申请日：2020-02-06

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman

IPC: H04W24/00 ,  H04W64/00 ,  H04W4/029 ,  G06N20/00 ,  H04L5/00 ,  G01S5/02 ,  G06K9/00

Abstract: A communication system that provides wireless service to at least one wireless device is provided. The communication system includes a baseband controller communicatively coupled to a plurality of radio points and at least one image capture device at a site. The baseband controller is configured to determine a signature vector for a wireless device associated with a first user. The communication system also includes a machine learning computing system configured to determine an image-based location of the first user based on image data from the at least one image capture device. The communication system is also configured to determine mapping data that associates the signature vector with the image-based location of the first user.

公开(公告)号：US20200260403A1

公开(公告)日：2020-08-13

申请号：US16783479

申请日：2020-02-06

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman

IPC: H04W64/00 ,  H04W4/029 ,  G06N20/00 ,  G06K9/00 ,  G01S5/02 ,  H04L5/00

Abstract: A communication system that provides wireless service to at least one wireless device is provided. The communication system includes a baseband controller communicatively coupled to a plurality of radio points and at least one image capture device at a site. The baseband controller is configured to determine a signature vector for a wireless device associated with a first user. The communication system also includes a machine learning computing system configured to determine an image-based location of the first user based on image data from the at least one image capture device. The communication system is also configured to determine mapping data that associates the signature vector with the image-based location of the first user.

公开(公告)号：US11974269B2

公开(公告)日：2024-04-30

申请号：US17345219

申请日：2021-06-11

Applicant: CommScope Technologies LLC

Inventor： Arthur J. Barabell ,  Vedat Eyuboglu ,  Nagi Jayaraman Mahalingam ,  Balaji B Raghothaman ,  Stuart D. Sandberg ,  Sassan Ahmadi

IPC: H04W72/1263 ,  H04B17/318 ,  H04W72/044

CPC classification number: H04W72/1263 ,  H04B17/318 ,  H04W72/046

Abstract: An example communication system includes remote units to exchange radio frequency (RF) signals with mobile devices, RF signals comprising information destined for, or originating from, a mobile device, the remote units performing at least some physical layer processing for an air interface used by the remote units to communicate with the mobile device. The communication system also includes two or more controllers comprising real-time schedulers for assigning airlink resources to the mobile device for the information. The communication system also includes a coordination function coupled to the two or more controllers to coordinate assignments made by the real-time schedulers in the two or more controllers.

公开(公告)号：US11496943B2

公开(公告)日：2022-11-08

申请号：US16918691

申请日：2020-07-01

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman ,  Irfaan Ahamed Salahuddeen ,  Arthur J. Barabell

IPC: H04W40/02 ,  H04W4/06 ,  H04W72/04 ,  H04W24/10 ,  H04W92/20 ,  H04W88/08 ,  H04L69/164 ,  H04L69/22 ,  H04L5/00 ,  H04L12/18

Abstract: A C-RAN includes a plurality of remote units (RUs), each being configured to exchange RF signals with at least one UE. The C-RAN also includes a central unit communicatively coupled to the plurality of RUs via a fronthaul interface. The central unit is configured to determine sets of data to be sent to a plurality of remote units across the fronthaul interface. The central unit is also configured to determine a mapping of each of the sets of data to at least one of the plurality of remote units. The central unit is also configured to add a respective indicator, based on the mapping, to each set of data, wherein each respective indicator indicates each remote unit that the respective set of data is intended for. The central unit is also configured to broadcast the sets of data, each with the respective indicator, to the plurality of remote units.

公开(公告)号：US20220330199A1

公开(公告)日：2022-10-13

申请号：US17850487

申请日：2022-06-27

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman

IPC: H04W64/00

Abstract: Techniques for determining a change of a given remote unit of a centralized radio access network (C-RAN) are disclosed. This can be done, for example, by determining signal reception metrics for other remote units in the C-RAN based on at least one transmission associated with the given remote unit and determining if a radio frequency (RF) environment associated with the given remote unit has changed as a function of the signal reception metrics for the other remote units.

公开(公告)号：US20220078631A1

公开(公告)日：2022-03-10

申请号：US17469527

申请日：2021-09-08

Applicant: CommScope Technologies LLC

Inventor： Irfaan Ahamed Salahuddeen ,  Balaji B Raghothaman ,  Calogero Armao

IPC: H04W16/18 ,  H04L12/761

Abstract: One embodiment is directed to a system comprising a distributed unit (DU) and a plurality of remote units (RUs) to wirelessly transmit and receive radio frequency signals to and from the user equipment using a wireless interface. The DU and RUs are communicatively coupled to each other over a fronthaul and are configured to communicate over the fronthaul using an O-RAN fronthaul interface. Management-plane functionality in the system is configured to define a respective transport flow for one or more processing elements using an RU interface that specifies one or more multicast addresses in order to support multicast transmission from the DU to multiple RUs. In another embodiment, each RU is configured to advertise, during a capability discovery process, capabilities related to implementing a switched network shared cell configuration.