公开(公告)号：US20230354232A1

公开(公告)日：2023-11-02

申请号：US17791278

申请日：2020-12-21

Applicant: CommScope Technologies LLC

Inventor： Suresh N. Sriram ,  Sudarshana Varadappa

IPC: H04W56/00

CPC classification number: H04W56/0045 ,  H04W88/085

Abstract: A distributed radio access network (RAN) includes a plurality of remote units (RUs) communicatively coupled to a centralized unit. During each of at least one measurement iteration: one of the plurality of RUs is selected as a transmit-mode RU and all other of the plurality of RUs are in receive-mode; the transmit mode-RU transmits a known pattern signal to the receive-mode RUs; and each receive-mode RU determines a frame or symbol boundary difference between when the transmit-mode RU transmitted the known pattern signal and when the respective receive-mode RU received the known pattern signal. Following the at least one measurement iteration: the centralized unit determines a respective timing offset based on each frame or symbol boundary difference; the centralized unit determines a common alignment point for the RUs based on the timing offsets; and each RU's timing is adjusted to align with the common alignment point.

公开(公告)号：US20240348480A1

公开(公告)日：2024-10-17

申请号：US18637033

申请日：2024-04-16

Applicant: CommScope Technologies LLC

Inventor： Yogesh C.S ,  Suresh N. Sriram ,  Sudarshana Varadappa

IPC: H04L27/26

CPC classification number: H04L27/26025

Abstract: A fronthaul unit for use in a distributed antenna system includes at least one hardware buffer configured to: receive first uplink packets at a first numerology for a first carrier from at least a first remote unit associated with a first donor unit, wherein first symbols of the first uplink packets for the first carrier are received at a first symbol timing; receive second uplink packets at a second numerology from a second carrier from at least a second remote unit associated with a second donor unit, wherein second symbols of the second uplink packets for the second carrier are received at a second symbol timing, wherein the second symbol timing is a multiple of the first symbol timing; and poll both the first uplink packets and the second uplink packets from the at least one hardware buffer at a highest granularity symbol notion based on the first symbol timing.

公开(公告)号：US20230361958A1

公开(公告)日：2023-11-09

申请号：US18312842

申请日：2023-05-05

Applicant: CommScope Technologies LLC

Inventor： Suresh N. Sriram ,  Narayana Reddy Korimilla ,  Milind Kulkarni ,  Sohil Thakkar ,  Luigi Tarlazzi ,  Christopher Goodman Ranson ,  Thomas Kummetz ,  Alfons Dussmann ,  Theodore E. Dahlen

IPC: H04L5/00 ,  H04W72/23 ,  H04W72/1268

CPC classification number: H04L5/0048 ,  H04W72/23 ,  H04W72/1268

Abstract: One embodiment is directed to a virtual distributed antenna system (vDAS) that comprises at least one physical server computer configured to execute virtualization software that creates a virtualized environment. The at least one physical server computer is configured to instantiate and execute a set of one or more virtual network functions (VNFs) used to implement a virtual master unit (vMU). The vDAS further comprises a plurality of access points (APs), each of the APs associated with a respective set of coverage antennas. Other embodiments are disclosed.

公开(公告)号：US20250062942A1

公开(公告)日：2025-02-20

申请号：US18580892

申请日：2022-07-20

Applicant: CommScope Technologies LLC

Inventor： Suresh N. Sriram ,  Arthur J. Barabell

IPC: H04L27/26 ,  H04L5/00

Abstract: The present disclosure describes methods and apparatus for real-time physical layer processing in distributed units (DU). A downlink data processing method includes receiving a downlink transport block at the physical layer and generating a plurality of sub-transport blocks mapped to a plurality of symbols by processing the received transport block. The method further includes processing the plurality of sub-transport blocks sequentially using at least one transfer function to generate the plurality of symbols which are then transmitted to a radio unit (RU) for transmission to a user equipment (UE). An uplink data processing method includes generating an uplink transport block by processing a plurality of symbols received at the DU from the RU. The plurality of symbols are processed using at least one uplink transfer function. A downlink/uplink transfer function is functionally equivalent to a plurality of down-link/uplink sequential signal processing modules.

公开(公告)号：US20240176670A1

公开(公告)日：2024-05-30

申请号：US18517885

申请日：2023-11-22

Applicant: CommScope Technologies LLC

Inventor： Arjun Nanjundappa ,  Suresh N. Sriram ,  Devaraj Sambandan ,  Ehsan Daeipour

IPC: G06F9/50

CPC classification number: G06F9/5044 ,  G06F9/505

Abstract: A computing system having a vDAS compute node implementing at least one virtual network function (NF) in a virtualized distributed antenna system (vDAS) having a plurality of radio units (RUs). The computing system includes server and vDAS compute node. The vDAS compute node includes vDAS container(s) running on a first subset of cores. The server: receives periodic capacity usage reports from the vDAS compute node(s); compares scaling metric data derived from the periodic capacity usage reports to threshold limits to determine if any threshold limits have been reached by any scaling metric data for the vDAS compute node; when any threshold limits have been reached by any scaling metric data for at least one vDAS compute node: cause vDAS compute node to scale capacity by either instantiating or deleting additional vDAS container on second subset of cores of the at least one vDAS compute node.

公开(公告)号：US20230071719A1

公开(公告)日：2023-03-09

申请号：US17903707

申请日：2022-09-06

Applicant: CommScope Technologies LLC

Inventor： Suresh N. Sriram ,  Milind Kulkarni ,  Ehsan Daeipour

IPC: H04W52/14 ,  H04W52/34 ,  H04W52/24

Abstract: Systems and methods for select RU transmission power in RANs are provided. In one embodiment, a controller for a RAN is provided. The RAN includes a BBU entity coupled to a plurality of RUs providing wireless communications service to UEs in a coverage area, the controller comprises a processor executing: a power assessment function that determines a transmit power level for RUs based on RU configuration data; an information block dissemination function that communicates an information block to the RUs based on the transmit power level determined by the power assessment function; the information block dissemination function communicates a first information block to a RU that indicates a first power level, and a second information block to a second RU that indicates a second power level different than the first; within the coverage area, the downlink signals of the first RU are isolated from downlink signals of the second RU.

公开(公告)号：US20250106850A1

公开(公告)日：2025-03-27

申请号：US18899456

申请日：2024-09-27

Applicant: CommScope Technologies LLC

Inventor： Yogesh C.S ,  Suresh N. Sriram ,  Sudarshana Varadappa

IPC: H04W72/1273 ,  H04W88/08

Abstract: The present disclosure describes techniques of data transmission over a fronthaul network in a system comprising a baseband unit (BBU) and a plurality of radio units (RUs) communicatively coupled with the BBU over the fronthaul network. In the techniques of the present disclosure, the system generates a plurality of downlink commands corresponding to the plurality of RUs for scheduling a plurality of UEs across the plurality of RUs, where generating the plurality of downlink commands comprises generating a single downlink command per RU of the plurality of RUs. The system transmits the downlink commands towards the plurality of RUs over the fronthaul network and receives a plurality of uplink data packets corresponding to the plurality of downlink commands over the fronthaul network, where receiving the plurality of uplink data packets comprises receiving a single uplink data packet per RU comprising data associated with all UEs served by the RU.

公开(公告)号：US12200648B2

公开(公告)日：2025-01-14

申请号：US17791278

申请日：2020-12-21

Applicant: CommScope Technologies LLC

Inventor： Suresh N. Sriram ,  Sudarshana Varadappa

IPC: H04W56/00 ,  H04W84/04 ,  H04W88/08

Abstract: A distributed radio access network (RAN) includes a plurality of remote units (RUs) communicatively coupled to a centralized unit. During each of at least one measurement iteration: one of the plurality of RUs is selected as a transmit-mode RU and all other of the plurality of RUs are in receive-mode; the transmit mode-RU transmits a known pattern signal to the receive-mode RUs; and each receive-mode RU determines a frame or symbol boundary difference between when the transmit-mode RU transmitted the known pattern signal and when the respective receive-mode RU received the known pattern signal. Following the at least one measurement iteration: the centralized unit determines a respective timing offset based on each frame or symbol boundary difference; the centralized unit determines a common alignment point for the RUs based on the timing offsets; and each RU's timing is adjusted to align with the common alignment point.

公开(公告)号：US20240349085A1

公开(公告)日：2024-10-17

申请号：US18751212

申请日：2024-06-22

Applicant: CommScope Technologies LLC

Inventor： Alfons Dussmann ,  Joerg Stefanik ,  Patrick Braun ,  Daniel Schwab ,  Van Erick Hanson ,  Suresh N. Sriram ,  Thomas Kummetz ,  Dean Zavadsky

IPC: H04W24/02 ,  H04W24/08 ,  H04W72/0453 ,  H04W88/10

CPC classification number: H04W24/02 ,  H04W24/08 ,  H04W72/0453 ,  H04W88/10

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data including frequency-domain IQ data and downlink control-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to at least some of the remote units used to serve the first cell. At least some physical layer baseband processing for a wireless interface used to serve the first cell is performed by the virtualized headend or the remote units used to serve the first cell.

公开(公告)号：US20240039614A1

公开(公告)日：2024-02-01

申请号：US18358781

申请日：2023-07-25

Applicant: CommScope Technologies LLC

Inventor： Suresh N. Sriram ,  Sudarshana Varadappa

IPC: H04B7/155 ,  H04W72/1273 ,  H04W76/27

CPC classification number: H04B7/155 ,  H04W72/1273 ,  H04W76/27

Abstract: The present disclosure describes various techniques of automatically configuring a repeater system. In one embodiment, the techniques of present disclosure configure the repeater system as a dummy user equipment and connect to a cell served by a base station coupled to the repeater system and establish two-way communication between the repeater system and the base station for determining one or more signaling parameters related to the configuration of the base station. In another non-limiting embodiment, the techniques of the present disclosure operate the repeater system in a listener only mode and perform various signal processing/calculations to determine the one or more signaling parameters related to the configuration of the base station. Once the one or more signaling parameters are determined, the techniques of the present disclosure may configure the repeater system based at least in part on the one or more signaling parameters.