公开(公告)号：US11019574B2

公开(公告)日：2021-05-25

申请号：US16786872

申请日：2020-02-10

Applicant: CommScope Technologies LLC

Inventor： Gopikrishna Charipadi ,  Stuart D. Sandberg

IPC: H04W52/14 ,  H04W52/24 ,  H04W52/22

Abstract: A communication system is provided. The communication system includes at least one radio point, each configured to exchange radio frequency (RF) signals with a user equipment (UE) at a site. The communication system also includes a controller communicatively coupled to the at least one radio point. The controller is configured to determine a transmit power control (TPC) command for the UE based on a signal to interference plus noise (SINK) for the UE. The controller is also configured to determine a count (N) of consecutive uplink transmissions, from the UE, meeting at least one criteria. The controller is also configured to determine a modified TPC command for the UE based on the count (N) and the TPC command.

公开(公告)号：US10461825B2

公开(公告)日：2019-10-29

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: H04W72/04 ,  H04B7/0456 ,  H04B7/0426 ,  H04L1/06 ,  H04L27/26 ,  G06F17/16 ,  H04L5/00

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：US20190327730A1

公开(公告)日：2019-10-24

申请号：US16381720

申请日：2019-04-11

Applicant: CommScope Technologies LLC

Inventor： Stuart D. Sandberg

IPC: H04W72/04 ,  H04L5/14

Abstract: A base station for selecting a modulation and coding scheme (MCS) and a total block size (TBS) for a UE is provided. The base station includes a processor and memory storing instructions. The instructions are executable to map a nominal MCS to a TBS index and determine a nominal TBS per resource block value based on the TBS index. The instructions are also executable to determine a target TBS based on the nominal TBS per resource block value and a number of resource blocks allocated to the UE. The instructions are also executable to determine a customized TBS, from a plurality of predefined TBSs, that is closest to the target TBS. The instructions are also executable to map the customized TBS to a customized MCS. The instructions are also executable to use the customized TBS and the customized MCS to transmit to the UE during a downlink transmission time interval.

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：US20250071736A1

公开(公告)日：2025-02-27

申请号：US18702611

申请日：2022-10-20

Applicant: CommScope Technologies LLC

Inventor： Sunit Kumar Sharma ,  Irfaan Ahamed Salahuddeen ,  Stuart D. Sandberg ,  Boaz Pianka ,  Arthur J. Barabell ,  Pradeep Prabhu

IPC: H04W72/04 ,  H04W28/02 ,  H04W72/541

Abstract: Systems and methods for dynamic base station functional split configuration management are provided. In one embodiment, a system for base station functional split management for uplink fronthaul traffic comprises: a baseband controller coupled to a plurality of radio units via a fronthaul network, wherein the plurality of radio units comprise a signal zone from which uplink signals are combined by the base station: a split controller configured to dynamically select and control a functional split of a respective uplink receive chain between the baseband controller and each of the plurality of radio units: wherein the functional split defines a demarcation point on the receive chain prior to which processing operations are executed by a radio unit and after which processing operations are executed by the baseband controller: wherein the split controller selects between a plurality of functional split options to dynamically control the functional split and the demarcation point.

公开(公告)号：US12219510B2

公开(公告)日：2025-02-04

申请号：US16553924

申请日：2019-08-28

Applicant: CommScope Technologies LLC

Inventor： Stuart D. Sandberg

IPC: H04W56/00 ,  H04W84/04

Abstract: Embodiment are directed to systems and methods for use with a central radio access network (C-RAN) comprising a plurality of controllers and a plurality of radio points. Each of the controllers is configured to determine if that controller should serve as a timing master for the controllers and the radio points and, if that controller should serve as the timing master, synchronize the local clock of that controller with a master clock source over a backhaul network and transmit synchronization messages from that controller over a fronthaul network for reception by the other controllers and the radio points and for use by the other controllers and the radio points in synchronizing the local clocks thereof with the local clock of that controller. Other embodiments are disclosed.

公开(公告)号：US20240292386A1

公开(公告)日：2024-08-29

申请号：US18584033

申请日：2024-02-22

Applicant: CommScope Technologies LLC

Inventor： Stuart D. Sandberg ,  Arthur J. Barabell

IPC: H04W72/0446 ,  H04L5/00 ,  H04W72/12 ,  H04W74/0833

CPC classification number: H04W72/0446 ,  H04L5/0051 ,  H04W72/12 ,  H04W74/0833

Abstract: One embodiment is directed to a system comprising a distributed unit comprising a plurality of processing units (PUs) and a plurality of radio units (RUs). Each PU is configured to: for each time slot included in a first subset of the time slots, independently perform scheduling for at least one shared channel for only those UEs for which the respective protection zone (PZ) span only RU groups (RUGs) included in a first one of a respective pair of RUG Groups associated with that PU, and, for each time slot included in a second subset of the time slots, independently perform scheduling for the at least one shared channel for only those UEs for which the respective PZs span only the RUGs included in a second one of the respective pair of RUG Groups associated with that PU. Other embodiments are directed to scheduling support channel resources.

公开(公告)号：US11777674B2

公开(公告)日：2023-10-03

申请号：US17156323

申请日：2021-01-22

Applicant: CommScope Technologies LLC

Inventor： Boaz Pianka ,  Stuart D. Sandberg

IPC: H04W72/00 ,  H04L5/00 ,  H04W72/1268 ,  H04W48/10 ,  H04L1/1607 ,  H04L1/1829 ,  H04W72/20

CPC classification number: H04L5/0037 ,  H04L1/1671 ,  H04L1/1854 ,  H04W48/10 ,  H04W72/1268 ,  H04W72/20

Abstract: A communication system for statically allocating physical uplink control channel (PUCCH) resources on a PUCCH. The communication system includes a base station configured to exchange radio frequency (RF) signals with a plurality of user equipment terminals (UEs). The base station is also configured to identify two PUCCH resources, each sharing the same orthogonal code sequence and located in different resource block of adjacent slots of a subframe. The base station is also configured to statically allocate the two PUCCH resources to two of the UEs, where both UEs are legacy UEs or Category-M1 (Cat-M1) UEs.

公开(公告)号：US20220368398A1

公开(公告)日：2022-11-17

申请号：US17743910

申请日：2022-05-13

Applicant: CommScope Technologies LLC

Inventor： Balaji B Raghothaman ,  Stuart D. Sandberg

IPC: H04B7/06 ,  H04B7/0456

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：US20220264333A1

公开(公告)日：2022-08-18

申请号：US17673160

申请日：2022-02-16

Applicant: CommScope Technologies LLC

Inventor： Stuart D. Sandberg ,  Balaji B Raghothaman ,  Irfaan Ahamed Salahuddeen

IPC: H04W24/02 ,  H04W8/20 ,  H04W24/08

Abstract: In one embodiment, the following is determined for each UE served by a radio access network: a first set of remote units from which to wirelessly transmit user data to that UE and a second set of remote units that are not used to wirelessly transmit user data to any other UE while user data is being wirelessly transmitted to that UE. The second set for each UE includes the first set of remote units for that UE. Downlink fronthaul data for each UE is transmitted over the fronthaul to only the remote units included in the first set for that UE. The first set of remote units for each UE is used to wirelessly transmit user data to that UE, where no remote unit included in the second set for that UE is used to wirelessly transmit user data while wirelessly transmitting to that UE.