公开(公告)号：US10735097B2

公开(公告)日：2020-08-04

申请号：US16274152

申请日：2019-02-12

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang ,  Mu Xu ,  Haipeng Zhang ,  Curtis Dean Knittle

IPC: H04B10/25 ,  H04L12/28 ,  H04B10/40

Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to (i) transmit a downstream optical signal at a first wavelength, and (ii) simultaneously receive an upstream optical signal at a second wavelength. The second coherent optics transceiver is configured to (i) receive the downstream optical signal, and (ii) simultaneously transmit the upstream optical signal. The first wavelength has a first center frequency separated from a second center frequency of the second wavelength.

公开(公告)号：US10608744B2

公开(公告)日：2020-03-31

申请号：US16191315

申请日：2018-11-14

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Jing Wang ,  Zhensheng Jia ,  Luis Alberto Campos

IPC: H04B10/2575 ,  H04J14/02 ,  H04Q11/00 ,  H04W88/08 ,  H04B10/54 ,  H04Q11/02

Abstract: A digital mobile fronthaul (MFH) network includes a baseband processing unit (BBU) having a digitization interface configured to digitize, using delta-sigma digitization, at least one wireless service for at least one radio access technology. The network further includes a transport medium in operable communication with the BBU. The transport medium is configured to transmit a delta-sigma digitized wireless service from the BBU. The network further includes a remote radio head (RRH) configured to operably receive the delta-sigma digitized wireless service from the BBU over the transport medium.

公开(公告)号：US20190379455A1

公开(公告)日：2019-12-12

申请号：US16450822

申请日：2019-06-24

Applicant: CABLE TELEVISION LABORATORIES, INC

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

IPC: H04B10/2507 ,  H03M3/00

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US20190181952A1

公开(公告)日：2019-06-13

申请号：US16274152

申请日：2019-02-12

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang ,  Mu Xu ,  Haipeng Zhang ,  Curtis Dean Knittle

IPC: H04B10/25 ,  H04B10/40 ,  H04L12/28

Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to (i) transmit a downstream optical signal at a first wavelength, and (ii) simultaneously receive an upstream optical signal at a second wavelength. The second coherent optics transceiver is configured to (i) receive the downstream optical signal, and (ii) simultaneously transmit the upstream optical signal. The first wavelength has a first center frequency separated from a second center frequency of the second wavelength.

公开(公告)号：US20190140741A1

公开(公告)日：2019-05-09

申请号：US16180912

申请日：2018-11-05

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Lin Cheng ,  Luis Alberto Campos ,  Jing Wang ,  Zhensheng Jia

IPC: H04B10/2575 ,  H04J99/00 ,  H04B10/27

Abstract: A resource allocation method is provided for a non-orthogonal multiple access distribution of access network users communicatively coupled to a single transport medium. The method includes steps of allocating a first frequency and time domain resource to a first user and a second frequency and time domain resource to a second user of the access network users, obtaining channel information regarding a particular communication channel of the access network for which resources are allocated, grouping the first user with the second user based on an overlap of the first frequency and time domain resource with the second frequency and time domain resource, and assigning the first user to a different power allocation resource than the second user within the frequency and time domain overlap.

公开(公告)号：US12225116B1

公开(公告)日：2025-02-11

申请号：US18073240

申请日：2022-12-01

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Jing Wang ,  Bernardo Huberman

IPC: H04B10/70 ,  H04L9/08

Abstract: A method performed by a node of a quantum key distribution (QKD) network includes receiving, from a hub of the QKD network, a user-node pulse train of optical-pulse pairs, each of the optical-pulse pairs comprising a first pulse and a second pulse having an optical phase shift relative to the first pulse. The method further includes splitting the user-node pulse train into first and second pulse trains, calibrating an asymmetric Mach-Zehnder interferometer with the first pulse train, blocking the second pulse of each of the optical-pulse pairs of the second pulse train to generate a filtered pulse train, splitting the filtered pulse train into a timing pulse train and a pre-qubit pulse train, delaying the pre-qubit pulse train into a delayed pulse train, and encoding the delayed pulse train into a photonic-qubit pulse train and transmitting the photonic-qubit pulse train to the hub.

公开(公告)号：US12113894B1

公开(公告)日：2024-10-08

申请号：US17743377

申请日：2022-05-12

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Bernardo Huberman ,  Jing Wang ,  Robert M. Lund

IPC: H04L9/40 ,  H04L9/08

CPC classification number: H04L9/0852 ,  H04L9/0825 ,  H04L63/166

Abstract: Systems and methods provide quantum secured internet transport. Quantum key distribution (QKD) is made universally available to existing Transport Layer Security (TLS) Internet services without requiring modification of existing applications. QKD keys may be prefetched and transferred to user devices at secure sites using QKD over an optical link (e.g., a continuous wave fiber or free-space optical link). A proxy QKD TLS tunnel client and a QKD TLS tunnel server are transparent to the user devices and select QKD keys for use with existing TLS client and TLS server services to form a QKD TLS tunnel between the user devices for secure communication. One-time-pad (OTP) encryption uses pre-shared QKD keys to provide secure OTP based encryption.

公开(公告)号：US12107628B2

公开(公告)日：2024-10-01

申请号：US17977168

申请日：2022-10-31

Applicant: CABLE TELEVISION LABORATORIES, INC

Inventor： Zhensheng Jia ,  Luis Alberto Campos ,  Jing Wang ,  Mu Xu ,  Haipeng Zhang ,  Curtis Dean Knittle

IPC: H04B10/00 ,  H04B10/25 ,  H04B10/40 ,  H04L12/28

CPC classification number: H04B10/2589 ,  H04B10/40 ,  H04L12/2898

Abstract: A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to (i) transmit a downstream optical signal at a first wavelength, and (ii) simultaneously receive an upstream optical signal at a second wavelength. The second coherent optics transceiver is configured to (i) receive the downstream optical signal, and (ii) simultaneously transmit the upstream optical signal. The first wavelength has a first center frequency separated from a second center frequency of the second wavelength.

公开(公告)号：US11863232B2

公开(公告)日：2024-01-02

申请号：US17588875

申请日：2022-01-31

Applicant: CABLE TELEVISION LABORATORIES, INC.

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

IPC: H04B10/2507 ,  H03M3/00

CPC classification number: H04B10/2507 ,  H03M3/458

Abstract: A baseband processing unit includes a baseband processor configured to receive a plurality of component carriers of a radio access technology wireless service, and a delta-sigma digitization interface configured to digitize at least one carrier signal of the plurality of component carriers into a digitized bit stream, for transport over a transport medium, by (i) oversampling the at least one carrier signal, (ii) quantizing the oversampled carrier signal into the digitized bit stream using two or fewer quantization bits.

公开(公告)号：US11616645B1

公开(公告)日：2023-03-28

申请号：US17671090

申请日：2022-02-14

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Jing Wang ,  Bernardo Huberman ,  Luis Alberto Campos ,  Zhensheng Jia

IPC: H04L29/06 ,  H04L9/08 ,  H04L9/14 ,  H04B10/27

Abstract: A first node of a network includes a quantum transmitter, a classical transceiver, and an initial-key generator that cooperate with a second node to transmit an initial key via the quantum transmitter. The first node includes a key-series generator that (i) encrypts a first unencrypted key of a series of unencrypted keys to generate a first encrypted key of a series of encrypted keys and (ii) encrypts each subsequent unencrypted key of the series of unencrypted keys with a preceding unencrypted key of the series of unencrypted keys to generate a subsequent encrypted key of the series of encrypted keys. The encrypted keys are transmitted to the second node. The first node includes one or both of a decryptor and an encryptor. The decryptor decrypts encrypted data using a last unencrypted key of the series of unencrypted keys. The encryptor encrypts unencrypted data using the last unencrypted key.