US 12,074,691 B1
Photonics assisted millimeter-wave systems and methods
Mu Xu, Broomfield, CO (US); Ruoyu Sun, Westminster, CO (US); Balkan Kecicioglu, Erie, CO (US); Junwen Zhang, Broomfield, CO (US); Haipeng Zhang, Broomfield, CO (US); Zhensheng Jia, Superior, CO (US); and Luis Alberto Campos, Superior, CO (US)
Assigned to Cable Television Laboratories, Inc., Louisville, CO (US)
Filed by CABLE TELEVISION LABORATORIES, INC., Louisville, CO (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,253.
Application 18/100,253 is a continuation of application No. 17/498,442, filed on Oct. 11, 2021, granted, now 11,563,508.
Application 17/498,442 is a continuation of application No. 17/008,548, filed on Aug. 31, 2020, granted, now 11,146,351.
Claims priority of provisional application 62/893,627, filed on Aug. 29, 2019.
This patent is subject to a terminal disclaimer.
Int. Cl. H04J 14/02 (2006.01); H04B 10/11 (2013.01); H04B 10/2575 (2013.01); H04Q 11/00 (2006.01)
CPC H04J 14/023 (2013.01) [H04B 10/11 (2013.01); H04B 10/2575 (2013.01); H04J 14/0212 (2013.01); H04Q 11/0005 (2013.01); H04Q 2011/0015 (2013.01); H04Q 2011/0016 (2013.01); H04Q 2011/0039 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A transmission method for a communications network, comprising the steps of:
generating, within a selected frequency band, one or more adjacent two-tone optical frequency conjugate pairs, wherein each optical frequency conjugate pair of the one or more adjacent two-tone optical frequency conjugate pairs includes (a) a first optical tone carrying a modulated data signal, and (b) a second optical tone (i) carrying a reference signal, and (ii) phase-locked and frequency-locked to the first optical tone;
delivering the one or more adjacent two-tone optical frequency conjugate pairs to an optical transport medium in operable communication with at least one remote base station such that the at least one base station is enabled to convert the one or more adjacent optical frequency conjugate pairs into a one or more respective radio frequency (RF) electrical signals; and
implementing at least one of coordinated beamforming and coordinated multipoint for first and second separate millimeter-wave (mmW) RF electrical signals corresponding to at least two different phase-locked optical frequency conjugate pairs, respectively.