公开(公告)号：US20180183621A1

公开(公告)日：2018-06-28

申请号：US15903189

申请日：2018-02-23

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

IPC: H04L12/28 ,  H04L12/24 ,  H04L5/00 ,  H04L27/26

CPC classification number: H04L12/2801 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/001 ,  H04L5/0046 ,  H04L5/006 ,  H04L12/2898 ,  H04L27/2646 ,  H04L41/083 ,  H04W24/10

Abstract: A cable modem termination system (CMTS) may communicate with a plurality of cable modems using a plurality of orthogonal frequency division multiplexed (OFDM) subcarriers. The CMTS may determine a performance metric of each of the cable modems. For each of the OFDM subcarriers and each of the cable modems, the CMTS may select physical layer parameters to be used for communication with that cable modem on that OFDM subcarrier based on a performance metric of that cable modem. The parameters may be selected for each individual modem and/or each individual subcarrier, or may be selected for groups of modems and/or groups of subcarriers. The parameters may include, for example, one or more of: transmit power, receive sensitivity, timeslot duration, modulation type, modulation order, forward error correction (FEC) type, and FEC code rate.

公开(公告)号：US09974025B2

公开(公告)日：2018-05-15

申请号：US15464912

申请日：2017-03-21

Applicant: Maxlinear, Inc.

Inventor： James Qiu ,  Sridhar Ramesh ,  Sheng Ye ,  Curtis Ling

IPC: H04W52/02 ,  H04B1/10 ,  H04L27/06 ,  H03G3/20 ,  H04L1/20 ,  H04W88/02 ,  H04B17/00

CPC classification number: H04W52/0245 ,  H03G3/20 ,  H04B1/109 ,  H04B17/00 ,  H04L1/20 ,  H04L27/06 ,  H04W88/02 ,  Y02D70/00 ,  Y02D70/40

Abstract: A communication receiver which applies signal processing for quantitatively estimating receive signal factors such as communication channel quality, signal characteristics, and overall system received bit error rate (BER) or packet error rate (PER) and which applies a general algorithm for mapping these estimated factors to control receiver performance and minimize power consumption.

公开(公告)号：US09936262B2

公开(公告)日：2018-04-03

申请号：US15407424

申请日：2017-01-17

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

IPC: H04N21/6338 ,  H04H20/78 ,  H04N21/647 ,  H04N21/61

CPC classification number: H04N21/6338 ,  H04H20/78 ,  H04H60/32 ,  H04H60/97 ,  H04N21/6118 ,  H04N21/6156 ,  H04N21/6168 ,  H04N21/64761 ,  H04N21/64769

Abstract: A coupling device for use in a hybrid fiber coaxial (HFC) network may be configured to detect a control message and determine from the message a period for which a cable modem downstream is to be transmitting a desired transmission, disable an upstream path through it when there is only noise incident on the upstream path, and enable the upstream path during the period when a desired transmission from a cable modem downstream of the coupling device is incident on the upstream path. The coupling device may be a trunk amplifier, a distribution amplifier, or a splitter. The coupling device may comprise a single upstream interface coupled to a plurality of downstream interfaces. The enabling and/or disabling may be in response to a signal strength indicated by the SSI being below a threshold.

公开(公告)号：US09929871B2

公开(公告)日：2018-03-27

申请号：US15444648

申请日：2017-02-28

Applicant: Maxlinear, Inc.

Inventor： Curtis Ling ,  Sridhar Ramesh ,  Timothy Gallagher

IPC: H04M11/06 ,  H04L12/28 ,  H04L5/00 ,  H04L27/26 ,  H04L12/24

CPC classification number: H04L12/2801 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/001 ,  H04L5/0046 ,  H04L5/006 ,  H04L12/2898 ,  H04L27/2646 ,  H04L41/083

Abstract: A cable modem termination system (CMTS) may communicate with a plurality of cable modems using a plurality of orthogonal frequency division multiplexed (OFDM) subcarriers. The CMTS may determine a performance metric of each of the cable modems. For each of the OFDM subcarriers and each of the cable modems, the CMTS may select physical layer parameters to be used for communication with that cable modem on that OFDM subcarrier based on a performance metric of that cable modem. The parameters may be selected for each individual modem and/or each individual subcarrier, or may be selected for groups of modems and/or groups of subcarriers. The parameters may include, for example, one or more of: transmit power, receive sensitivity, timeslot duration, modulation type, modulation order, forward error correction (FEC) type, and FEC code rate.

公开(公告)号：US20180069512A1

公开(公告)日：2018-03-08

申请号：US15700732

申请日：2017-09-11

Applicant: MaxLinear, Inc.

Inventor： Rahul Bhatia ,  Timothy Gallagher ,  Raja Pullela ,  Sridhar Ramesh

IPC: H03F3/21 ,  H03F3/45 ,  H03F1/02

CPC classification number: H03F3/21 ,  H03F1/0266 ,  H03F3/4508 ,  H03F2200/09 ,  H03F2200/66 ,  H03F2203/45731

Abstract: Systems and methods are provided for dynamically biasing power amplifiers. In particular, dynamic biasing of a power amplifier may be controlled, with the controlling comprising receiving an input signal that is to be amplified; processing the input signal; generating based on said processing of the input signal input signal, a plurality of control signals comprising at least one biasing control signal; and applying the plurality of control signals to one or more control elements that are used in driving and/or control of the power amplifier. The one or more control elements may comprise at least one biasing component that adjusts biasing applied to power amplifier.

公开(公告)号：US09894426B2

公开(公告)日：2018-02-13

申请号：US14979825

申请日：2015-12-28

Applicant: Maxlinear, Inc

Inventor： Sridhar Ramesh ,  Curtis Ling

IPC: H04B10/27 ,  H04Q11/00 ,  H04B10/40 ,  H04B10/2575

CPC classification number: H04Q11/0062 ,  H04B10/25751 ,  H04B10/27 ,  H04B10/271 ,  H04B10/40

Abstract: Circuitry of a hybrid fiber-coaxial network may comprise a first transceiver configured to connect the circuitry to an optical link, a second transceiver configured to connect the circuitry to an electrical link, a first processing path, a second processing path, and a switching circuit. In a first configuration, the switching circuit may couple the first transceiver to the second transceiver via the first processing path. In a second configuration, the switching circuit may couple the first transceiver to the second transceiver via the second processing path. The first transceiver may comprise a passive optical network (PON) transceiver and the second transceiver may comprise a data over coaxial service interface specification (DOCSIS) physical layer transceiver. The switching circuit may be configured based on the type of headend to which the circuitry is connected.

公开(公告)号：US20180013595A1

公开(公告)日：2018-01-11

申请号：US15621025

申请日：2017-06-13

Applicant: Maxlinear, Inc.

Inventor： Paul Chominski ,  Sridhar Ramesh

IPC: H04L27/00 ,  H04L12/24 ,  H04L12/28 ,  H04L29/12 ,  H04M11/06 ,  H04Q11/04

CPC classification number: H04L27/0008 ,  H04L12/2856 ,  H04L12/4625 ,  H04L41/5054 ,  H04L61/2015 ,  H04M11/062 ,  H04M11/066 ,  H04N21/42676 ,  H04N21/6118 ,  H04N21/6168 ,  H04Q11/0421 ,  H04Q2213/1304

Abstract: Aspects of methods and systems for frequency multiplexing suitable for Data Over Cable Service Interface Specification (DOCSIS) are provided. A system for multiplexing signals according to frequency comprises a DOCSIS port interface, an upstream interface, a downstream interface, and a circulator subsystem. The DOCSIS port interface comprises a plurality of channel filters. The upstream interface is operably coupled to a first channel filter of the plurality of channel filters, and the downstream interface is operably coupled to a second channel filter of the plurality of channel filters. The circulator subsystem is able to direct a first signal from the upstream interface to the DOCSIS port interface and is able to direct a second signal from the DOCSIS port interface to the downstream interface.

公开(公告)号：US20170325002A1

公开(公告)日：2017-11-09

申请号：US15661345

申请日：2017-07-27

Applicant: MaxLinear, Inc.

Inventor： Curtis Ling ,  Timothy Gallagher ,  Sridhar Ramesh

IPC: H04N21/6587 ,  H04N21/61 ,  H04N21/222 ,  H04N7/10 ,  H04H40/27 ,  H03H17/04 ,  H04H20/77 ,  H04H20/42 ,  H03M3/00 ,  H03M1/12 ,  H04N21/6373 ,  H04J1/00

CPC classification number: H04N21/6587 ,  H03H17/0416 ,  H03M1/12 ,  H03M1/126 ,  H03M3/496 ,  H04H20/426 ,  H04H20/77 ,  H04H40/27 ,  H04J1/00 ,  H04N7/10 ,  H04N7/106 ,  H04N21/2221 ,  H04N21/6118 ,  H04N21/6373

Abstract: A network device may receive a signal from a headend, wherein a bandwidth of the received signal spans from a low frequency to a high frequency and encompasses a plurality of sub-bands. The network device may determine, based on communication with the headend, whether one of more of the sub-bands residing above a threshold frequency are available for carrying downstream data from the headend to the circuitry. The network device may digitize the signal using an ADC operating at a sampling frequency. The sampling frequency may be configured based on a result of the determining. When the sub-band(s) are available for carrying downstream data from the headend to the network device, the sampling frequency may be set to a relatively high frequency. When the sub-band(s) are not available for carrying downstream data from the headend to the network device, the sampling frequency may be set to a relatively low frequency.

公开(公告)号：US09762189B2

公开(公告)日：2017-09-12

申请号：US14603993

申请日：2015-01-23

Applicant: MaxLinear, Inc.

Inventor： Rahul Bhatia ,  Timothy Gallagher ,  Raja Pullela ,  Sridhar Ramesh

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/45

CPC classification number: H03F3/21 ,  H03F1/0266 ,  H03F3/4508 ,  H03F2200/09 ,  H03F2200/66 ,  H03F2203/45731

Abstract: Systems and methods are provided for dynamically biasing power amplifiers. In particular, dynamic biasing of a power amplifier may be controlled, with the controlling comprising receiving an input signal that is to be amplified; processing the input signal; generating based on said processing of the input signal input signal, a plurality of control signals comprising at least one biasing control signal; and applying the plurality of control signals to one or more control elements that are used in driving and/or control of the power amplifier. The one or more control elements may comprise at least one biasing component that adjusts biasing applied to power amplifier.

公开(公告)号：US20170012894A1

公开(公告)日：2017-01-12

申请号：US15205962

申请日：2016-07-08

Applicant: Maxlinear, Inc.

Inventor： Sridhar Ramesh ,  Curtis Ling ,  Timothy Gallagher

IPC: H04L12/911 ,  H04B17/309

CPC classification number: H04L47/72 ,  H04L47/822 ,  H04W52/367

Abstract: Circuitry for use in a network controller comprises a processor and memory. The network controller is operable to control communications in a network comprising a plurality of devices connected via a shared coaxial cable. The circuitry is operable to maintain one or more data structures that hold per-sender-receiver-pair link parameters and per-sender-receiver-pair bandwidth grant status. The circuitry is operable to, in response to receipt of a reservation request on the shared coaxial cable, decide which one or more of a plurality of subbands and which one or more of a plurality timeslots to reserve for the transmission based, at least in part, on the per-sender-receiver-pair link parameters and the per-sender-receiver-pair bandwidth grant status in the one or more data structures. The circuitry is operable to generate a reservation grant message that indicates the decided one or more subbands and the decided one or more timeslots.

Abstract translation: 用于网络控制器的电路包括处理器和存储器。 网络控制器可操作以控制包括通过共享同轴电缆连接的多个设备的网络中的通信。 该电路可操作以维护保持每发送器 - 接收器对链路参数和每发送器 - 接收器对带宽授权状态的一个或多个数据结构。 该电路可操作以响应于在共享同轴电缆上接收到预约请求，决定至少部分地基于多个子带中的哪一个或多个以及多个时隙中的哪一个或多个来为传输保留 ，在每个发送者 - 接收者对链路参数和一个或多个数据结构中的每发送者 - 接收者对带宽授权状态。 电路可操作以产生指示所确定的一个或多个子带和所确定的一个或多个时隙的预留许可消息。