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.

公开(公告)号：US11425575B1

公开(公告)日：2022-08-23

申请号：US17133441

申请日：2020-12-23

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Dorin Gheorghe Viorel ,  Ruoyu Sun ,  Lili Hervieu

IPC: H04W16/14 ,  H04W72/04

Abstract: Systems and methods provide for use of spectrum emission masks to allow for two or more devices to coexist on a common communication bandwidth. The spectrum emission masks may include one, two, or three interior attenuation regions that, when implemented by a transmitting device, significantly reduce the transmission power in the interior attenuation regions. The interior attenuation regions may transmit to interior channels that separate one, two, or three outer channels of a plurality of channels spanning the common communication bandwidth.

公开(公告)号：US11057261B2

公开(公告)日：2021-07-06

申请号：US16727558

申请日：2019-12-26

Applicant: CABLE TELEVISION LABORATORIES, INC.

Inventor： Ruoyu Sun ,  Jingjie Zhu ,  Mark J. Poletti

IPC: H04L27/26

Abstract: A method for transmitting data via a coaxial electrical cable includes (a) converting symbols of each input data stream of a plurality of parallel input data streams from digital form to analog form, (b) individually filtering symbols of each input data stream, (c) transforming symbols of each input data stream from a first frequency-domain to a first time-domain, to generate parallel first time-domain samples, (d) converting the first time-domain samples to a serial multi-carrier signal, and (e) injecting the multi-carrier signal onto the coaxial electrical cable.