公开(公告)号：US20200067706A1

公开(公告)日：2020-02-27

申请号：US16551392

申请日：2019-08-26

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Massimiliano Pala ,  Ronald H. Ih

IPC: H04L9/08 ,  H04L9/32

Abstract: A system for enhanced internet of things digital certificate security is provided. The system includes a computer device. The computer device is programmed to store, in a database, a plurality of statuses associated with a plurality of digital certificates. The computer device is also programmed to receive, from a first computer device, a status update for the first digital certificate. The computer device is further programmed to update the first status based on the status update. Subsequently to updating the first status, the computer device is programmed to receive a request for a connection from the first device. Subsequently to updating the first status, the computer device is also programmed to deny the request for a connection based on the first status.

公开(公告)号：US20200044688A1

公开(公告)日：2020-02-06

申请号：US16653884

申请日：2019-10-15

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： JOSEPH PADDEN ,  MARK J. POLETTI

IPC: H04B1/715 ,  H04B1/7156 ,  H04B17/345 ,  H04W72/04

Abstract: A base station for a wireless communications system operating in an unlicensed target band of a wireless medium includes a receiver configured to wirelessly (i) receive non-cooperative carrier data within the target band from a user equipment, and (ii) detect an operation of at least one spread spectrum channel within the target band. The station further includes a transmitter configured to wirelessly send non-cooperative carrier data within the target band to the user equipment, a memory configured to store computer-executable instructions, and a processor configured to (i) execute the computer-executable instructions, (ii) determine, based on the detection operation of the receiver, at least one sequence of the at least one spread spectrum channel, and (iii) perform at least one corrective action to mitigate interference between the transmitter and an operation of the at least one spread spectrum channel based on the determination of the at least one sequence.

公开(公告)号：US20200037291A1

公开(公告)日：2020-01-30

申请号：US16593764

申请日：2019-10-04

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Dorin Gheorghe Viorel ,  Jennifer Andreoli-Fang ,  Neeharika Allanki

IPC: H04W72/04 ,  H04W16/14 ,  H04W72/10 ,  H04W72/08

Abstract: A method for allocating aggressive signal carriers in a target band of a wireless communication network is provided. The network includes at least one long term evolution (LTE) node and at least one non-LTE transmission source. The target band includes at least two adjacent pairs of contiguous radio frequency (RF) channels. The method includes steps of scanning each contiguous RF channel of the target band to measure a respective value of non-LTE RF energy therein, determining, from the measured non-LTE RF energy, that a first one of the contiguous RF channels is occupied by a non-LTE carrier, and allocating an LTE carrier to a second one of the contiguous RF channels, different than the first one of the contiguous RF channels, based on the determination.

公开(公告)号：US20200015226A1

公开(公告)日：2020-01-09

申请号：US16571553

申请日：2019-09-16

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Jennifer Andreoli-Fang

IPC: H04W72/04 ,  H04W88/06 ,  H04L5/00 ,  H04W72/02 ,  H04W28/22

Abstract: A system and method for providing an MAP for an unsolicited grant to a modem in a wireless backhaul environment based on centralized small cell (cSC) data received at a modem termination system (MTS) is described herein.

公开(公告)号：US10524227B2

公开(公告)日：2019-12-31

申请号：US16443949

申请日：2019-06-18

Applicant: Cable Television Laboratories, Inc.

Inventor： Luis Alberto Campos ,  Alireza Babaei

IPC: H04W64/00 ,  H04W56/00 ,  H04B7/06 ,  H04W4/06 ,  H04B7/024 ,  H04L5/00 ,  H04B17/318 ,  H04B17/12 ,  H04B17/00 ,  H04W52/28 ,  H04W48/20

Abstract: A cooperative wireless system using a multicast protocol to facilitate coordinating coherent addition and subtraction of wireless signaling or other beams originating from a plurality of antenna units at a target location is contemplated. The system may utilize multicast-based regulation and distribution of transmission control parameters necessary for the antenna units to synchronize the wireless signaling in a manner sufficient to enable the coherent addition and subtraction thereof at the target location.

公开(公告)号：US10523356B2

公开(公告)日：2019-12-31

申请号：US15609461

申请日：2017-05-31

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Curtis Dean Knittle ,  Luis Alberto Campos

IPC: H04B10/29 ,  H04J14/02 ,  H04B10/61

Abstract: A coherent passive optical network extender apparatus includes an extender transceiver for communication with an associated optical headend. The extender transceiver includes at least one receiving portion, at least one transmitting portion, and an extension processor. The apparatus further includes a signal adaptation unit configured to convert a downstream electrical transmission lane into a plurality of individual wavelengths. Each of the converted individual wavelengths are for transmission to one of an optical node and an end user. The apparatus further includes a plurality of transceivers, disposed within the signal adaptation unit, and configured to process and transmit the converted individual wavelengths as a bundle for retransmission to the respective end users.

公开(公告)号：US20190393962A1

公开(公告)日：2019-12-26

申请号：US16453848

申请日：2019-06-26

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Haipeng ZHANG ,  Zhensheng JIA ,  Mu XU

IPC: H04B10/27 ,  H04J14/02 ,  H04J14/08 ,  H04B10/50 ,  G02F1/21 ,  H01S5/04 ,  H01S5/065

Abstract: An optical line terminal includes an optical comb generator, N downlink channels Dk, and N uplink-photodetectors PDk. The optical comb generator is configured to generate a carrier signal having an optical-frequency-comb spectrum and including N optical tones Tk and N optical tones Rk, k={1, 2, . . . , N}. Each of the N downlink channels Dk is optically coupled to the optical comb generator and is configured to generate a respective downlink signal DSk that includes optical tone Tk modulated by downlink data. Each of the N uplink-photodetectors PDk is configured to receive a respective one of a plurality of modulated uplink signals USk, having optical tone Rk as a carrier signal.

公开(公告)号：US20190356603A1

公开(公告)日：2019-11-21

申请号：US16414668

申请日：2019-05-16

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Belal HAMZEH

IPC: H04L12/891 ,  H04L12/801 ,  H04L12/46 ,  H04L12/709 ,  H04W88/16 ,  H04W76/16

Abstract: A method for transmitting data in a communication network including a shared communication medium includes (a) transmitting local data between a first client node and a second client node according to a first data protocol, using a first shared communication medium, and (b) transmitting remote data between the first client node and a network hub according to a second data protocol different from the first data protocol, using at least the first shared communication medium.

公开(公告)号：US20190356527A1

公开(公告)日：2019-11-21

申请号：US16412104

申请日：2019-05-14

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Mu XU ,  Zhensheng JIA

IPC: H04L27/34 ,  H04L27/36 ,  H04L27/38 ,  H04L1/00 ,  H04B14/00

Abstract: A carrier-phase recovery method includes: (i) applying a first carrier-phase recovery algorithm to complex-valued symbols of a signal received by a product detector, yielding coarse phase-estimates, the signal being modulated per an M-QAM scheme; (ii) modelling the coarse phase-estimates as a weighted sum of M probability-density functions of an M-component mixture model; (iii) optimizing the M probability-density functions with an expectation-maximization algorithm to yield M optimized probability-density functions; (iv) mapping, based on the M optimized probability-density functions, the coarse phase-estimates to one of M symbols corresponding to the QAM scheme, each coarse phase-estimate mapped to a same symbol belonging to a same one of M clusters; (v) applying a second carrier-phase recovery algorithm to each of the M clusters to generate refined phase-estimates each corresponding to a respective coarse phase-estimate; and (vi) mapping, based on the M optimized probability-density functions, each refined phase-estimate to one of the M symbols.

公开(公告)号：US10476775B2

公开(公告)日：2019-11-12

申请号：US15465208

申请日：2017-03-21

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Dorin Gheorghe Viorel ,  Jennifer Andreoli-Fang ,  Belal Hamzeh ,  Josh Redmore ,  Carey Sonsino ,  Daryl William Malas

IPC: H04L12/26 ,  H04L25/02 ,  H04W74/08 ,  H04W16/14 ,  H04W8/00 ,  H04W84/12 ,  H04W88/08 ,  H04J11/00 ,  H04W74/00 ,  H04W84/04

Abstract: A method for detecting aggressive signal transmission signatures in a wireless communication network is provided. The network includes at least one station, at least one access point, and at least one non-cooperative transmission source. The method includes steps of generating a matrix of each instance of request-to-send (RTS) messages received by the access point during a specified observation cycle, recording, in a memory of the access point, a number of cumulative RTS messages received from the station, calculating a cumulative distribution function (CDF), based on the recorded RTS message instances in the memory, for a probability of the presence of an aggressive transmission signal by the non-cooperative transmission source within a transmission range of the access point, and determining the presence of the aggressive transmission signal based on the calculated CDF being greater than a predetermined threshold.