公开(公告)号：US20180183502A1

公开(公告)日：2018-06-28

申请号：US15851364

申请日：2017-12-21

Applicant: CommScope Technologies LLC

Inventor： Stuart D. Sandberg ,  Vedat Eyuboglu ,  Balaji B Raghothaman ,  Luigi Tarlazzi

IPC: H04B7/04 ,  H04L27/26 ,  H04W72/04 ,  H04L1/06

Abstract: One embodiment is directed to a system that implements a downlink transmission mode that precodes sequences of symbols using a precoder matrix selected from a codebook. Linear transformations are performed on the sequences of precoded symbols using a distribution matrix. The distribution matrix is configured so that each of a plurality of precoder matrices provides perfect steering of transmit power to a corresponding one of a plurality of disjoint subsets of the antenna ports used for the downlink transmission mode. Also, the distribution matrix can be configured so that at least one precoder matrix provides peak power at all of the antenna ports used for the downlink transmission mode.

公开(公告)号：US12047785B2

公开(公告)日：2024-07-23

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 ,  H04L45/16 ,  H04W84/04

CPC classification number: H04W16/18 ,  H04L45/16 ,  H04W84/045

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.

公开(公告)号：US11784696B2

公开(公告)日：2023-10-10

申请号：US17368061

申请日：2021-07-06

Applicant: CommScope Technologies LLC

Inventor： Naveen Shanmugaraju ,  Balaji B Raghothaman

IPC: H04B7/06 ,  H04W56/00

CPC classification number: H04B7/0632 ,  H04B7/0617 ,  H04B7/0626 ,  H04W56/001

Abstract: A system includes remote unit(s) (RU(s)). The RU(s) is/are configured to transmit at least one signal on a plurality of different beam patterns, each beam pattern comprising an active subset an inactive subset of a plurality of fine beams covering an area of a cell. The RU(s) is/are also configured to receive, from each of a plurality of user equipment (UEs) in the area, a respective signal strength measurement for each of the plurality of different beam patterns. The system also includes a centralized unit communicatively coupled to the plurality of RUs via a fronthaul interface. The centralized unit is configured to determine a bit vector for each UE based on a combination of the signal strength measurements from the respective UE. The centralized unit is configured also to select a respective fine beam for each UE based on the respective bit vector for the UE.

公开(公告)号：US11729741B2

公开(公告)日：2023-08-15

申请号：US17850487

申请日：2022-06-27

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman

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

CPC classification number: H04W64/006 ,  H04W88/085 ,  H04W88/12

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：US11304213B2

公开(公告)日：2022-04-12

申请号：US16413360

申请日：2019-05-15

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman ,  Stuart D. Sandberg ,  Purnima Venkata Kompella ,  Anil Bapat

IPC: H04W72/12 ,  H04W72/04 ,  H04W52/08 ,  H04L5/00 ,  H04W52/24 ,  H04B17/336 ,  H04W52/14

Abstract: This disclosure is directed to techniques for implementing uplink spatial reuse in a C-RAN.

公开(公告)号：US11212758B2

公开(公告)日：2021-12-28

申请号：US16085526

申请日：2017-03-09

Applicant: CommScope Technologies LLC

Inventor： Gopikrishna Charipadi ,  Balaji B Raghothaman

IPC: H04W52/52 ,  H04B17/336 ,  H04L1/00 ,  H04W52/24 ,  H04W88/08

Abstract: One embodiment is directed to controlling a gain for a receive signal path for receiving wireless signals. The following are repeatedly performed: determining an estimate of the total noise and interference in a received signal and determining a gain value for the receive signal path based on the estimate of the total noise and interference in order to maintain the digital data at a digital set point for a signal-to-interference-plus-noise-ratio (SINR) decoded with a highest modulation and coding scheme specified for the wireless channel. Another embodiment is directed to determining a received signal strength of the signals received at the receive signal path and determining a gain value for the receive signal path based on the received signal strength that maintains the digital data at a digital set point for a SINR sufficient to decode the MCS specified for the wireless channel.

公开(公告)号：US10694570B2

公开(公告)日：2020-06-23

申请号：US15839669

申请日：2017-12-12

Applicant: CommScope Technologies LLC

Inventor： Sohil Thakkar ,  Michael McFarland ,  Vedat Eyuboglu ,  Balaji B Raghothaman

IPC: H04W76/16 ,  H04W84/12 ,  H04W16/24 ,  H04W16/14 ,  H04W48/16 ,  H04B1/7075 ,  H04W74/00 ,  H04W92/12

Abstract: One embodiment is directed to a system to provide wireless service to user equipment using licensed radio frequency spectrum and unlicensed RF spectrum. The system comprises a controller and a plurality of radio points to transmit and receive radio frequency signals to and from the user equipment using the licensed RF spectrum. The system further comprises a wireless termination to transmit and receive radio frequency signals to and from the user equipment using unlicensed RF spectrum. The controller is configured to use a mobility group for providing the wireless service to the user equipment using the unlicensed RF spectrum and a plurality of WLAN access points. The controller is configured to establish an interface with the wireless termination for the mobility group to communicate control plane data to the wireless termination associated with providing the wireless service to the user equipment using the unlicensed RF spectrum. Other embodiments are disclosed.

公开(公告)号：US20190342798A1

公开(公告)日：2019-11-07

申请号：US16400911

申请日：2019-05-01

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman ,  Ehsan Daeipour ,  Pablo Caballero Garces

IPC: H04W28/26 ,  H04W74/08 ,  H04W72/04 ,  H04B17/336 ,  H04W72/08

Abstract: A system for channel access in Long Term Evolution (LTE) License-Assisted Access (LAA) is disclosed. The system includes a controller and a plurality of radio points. A level one radio point transmits a first reservation signal in response to a first backoff counter reaching zero. The first reservation signal indicates that the level one radio point will begin a first transmission of a first duration starting in a next subframe. A candidate level two radio point receives the first reservation signal and determines whether the candidate level two radio point received the first reservation signal with a signal to interference noise ratio (SINR) that exceeds a reservation detection threshold for the candidate level two radio point.

公开(公告)号：US20190223037A1

公开(公告)日：2019-07-18

申请号：US16243900

申请日：2019-01-09

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman

IPC: H04W24/10 ,  H04W72/08 ,  H04W16/14

Abstract: A system for reporting UE measurements is disclosed. The system includes a spectrum access system (SAS) configured to allocate a frequency band in the system, a coexistence manager (CxM) communicatively coupled to the SAS and allocate a set of radio frequency (RF) channels within the frequency band. The system also includes one or more CBSDs communicatively coupled to the SAS and CxM and configured to provide wireless service to user equipment (UEs) using one or more of the RF channels allocated by the CxM. The CxM is configured to manage co-existence of the CBSDs and advise the SAS on how to allocate the RF channels based, at least in part, on aggregated measurement reports provided to the CxM from the CBSDs.

公开(公告)号：US12133153B2

公开(公告)日：2024-10-29

申请号：US18048724

申请日：2022-10-21

Applicant: CommScope Technologies LLC

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

IPC: H04W40/02 ,  H04L5/00 ,  H04L12/18 ,  H04L69/164 ,  H04L69/22 ,  H04W4/06 ,  H04W24/10 ,  H04W72/04 ,  H04W72/21 ,  H04W88/08 ,  H04W92/20

CPC classification number: H04W40/02 ,  H04L5/0044 ,  H04L5/0048 ,  H04L12/1845 ,  H04L69/164 ,  H04L69/22 ,  H04W4/06 ,  H04W24/10 ,  H04W72/04 ,  H04W72/21 ,  H04W88/085 ,  H04W92/20 ,  H04L12/189

Abstract: A system includes a plurality of remote units; a centralized unit communicatively coupled to the plurality of remote units via a fronthaul network; and an entity that performs deep packet inspection. The centralized unit transmits sets of data to the plurality of remote units across the fronthaul network in packets, each of the sets of data mapped to at least one of the plurality of remote units and each of the packets including a respective indicator indicating each remote unit the associated packet is intended for, wherein each indicator comprises a plurality of bit positions where each bit position is mapped to a different one of the plurality of remote units. The entity performs the deep packet inspection on the packets to determine each remote unit the packets are intended for and communicate each packet to each remote unit the packet is intended for over the fronthaul network.