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    System and methods for time and frequency division passive optical network
    2.
    发明授权
    System and methods for time and frequency division passive optical network 有权

    公开(公告)号：US12107668B1

    公开(公告)日：2024-10-01

    申请号：US18217582

    申请日：2023-07-02

    Applicant: CABLE TELEVISION LABORATORIES, INC.

    Inventor： Junwen Zhang ,  Zhensheng Jia ,  Mu Xu ,  Haipeng Zhang ,  Luis Alberto Campos

    IPC: H04J14/02

    CPC classification number: H04J14/0282 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025

    Abstract: A coherent passive optical network includes a downstream transceiver and first and second upstream transceivers in communication with an optical transport medium. The downstream transceiver includes a downstream processor for mapping a downstream data stream to a plurality of sub-bands, and a downstream transmitter for transmitting a downstream optical signal modulated with the plurality of sub-bands. The first upstream transceiver includes a first local oscillator (LO) for tuning a first LO center frequency to a first sub-band of the plurality of sub-bands, and a first downstream receiver for coherently detecting the downstream optical signal within the first sub-band. The second upstream transceiver includes a second downstream receiver configured for coherently detecting the downstream optical signal within a second sub-band of the plurality of sub-bands. The downstream processor dynamically allocates the first and second sub-bands to the first and second transceivers in the time and frequency domains.

    Systems and methods for coherent optical backhauling
    4.
    发明授权
    Systems and methods for coherent optical backhauling 有权

    公开(公告)号：US12088344B1

    公开(公告)日：2024-09-10

    申请号：US17714139

    申请日：2022-04-05

    Applicant: CABLE TELEVISION LABORATORIES, INC.

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

    IPC: H04B10/40 ,  H04J14/02

    CPC classification number: H04B10/40 ,  H04J14/0238

    Abstract: An integrated transceiver is provided for a coherent optical communication network. The integrated transceiver includes a first optical transceiver portion configured to receive and transmit coherent optical signals from and to the coherent optical communication network, respectively. The integrated transceiver further includes a second optical transceiver portion configured to receive and transmit non-coherent optical signals respectively from and to a non-coherent optical communication network. The integrated transceiver further includes an integrated media access control (MAC) processor disposed between the first and second optical transceiver portions. The integrated MAC processor is configured to (i) exchange cooperative scheduling information from the first optical transceiver portion to the second optical transceiver portion, and (ii) enable the first optical transceiver portion to schedule data traffic between the coherent and non-coherent optical communication networks using scheduling information obtained from a control plane of the second optical transceiver portion.

    Photonics assisted millimeter-wave systems and methods
    9.
    发明授权
    Photonics assisted millimeter-wave systems and methods 有权

    公开(公告)号：US11563508B1

    公开(公告)日：2023-01-24

    申请号：US17498442

    申请日：2021-10-11

    Applicant: CABLE TELEVISION LABORATORIES, INC.

    Inventor： Mu Xu ,  Ruoyu Sun ,  Balkan Kecicioglu ,  Junwen Zhang ,  Haipeng Zhang ,  Zhensheng Jia ,  Luis Alberto Campos

    IPC: H04J14/02 ,  H04Q11/00 ,  H04B10/11 ,  H04B10/2575

    Abstract: A communications network includes a central communication unit, an optical transport medium, and a plurality of remote radio base stations. The central communication unit generates, within a selected millimeter-wave frequency band, a plurality of adjacent two-tone optical frequency conjugate pairs. Each conjugate pair includes a first optical tone carrying a modulated data signal, and a second optical tone carrying a reference local oscillator signal. The optical transport medium transports the plurality of two-tone conjugate pairs to the plurality of radio base stations, and each base station receives at least one conjugate pair at an optical front end thereof. The optical front end separates the first optical tone from the second optical tone, and converts the first optical tone into a millimeter-wave radio frequency electrical signal. The base station further includes a radio antenna system for wirelessly transmitting the millimeter-wave radio frequency electrical signal to at least one wireless receiving device.

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