The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2012
Filed:
Jul. 25, 2008
Thai-bao H. Kien, Suwanee, GA (US);
Amin Farvez, Lawrenceville, GA (US);
Richard J. Futch, Lawrenceville, GA (US);
Richard T. Causey, Sawanee, GA (US);
Michael Jones, Grayson, GA (US);
Thai-Bao H. Kien, Suwanee, GA (US);
Amin Farvez, Lawrenceville, GA (US);
Richard J. Futch, Lawrenceville, GA (US);
Richard T. Causey, Sawanee, GA (US);
Michael Jones, Grayson, GA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Upstream data handling in a digital Data Over Cable Service Interface Specification (DOCSIS) passive optical network (DPON). Embodiments include receiving at a headend, in an upstream path over an optical network, a plurality of digitized and serialized DPON upstream packets respectively distributed in a time division multiplexed fashion, wherein each DPON upstream packet includes a header, a trailer and a payload, monitoring the optical network for energy in the upstream path, including energy associated with a header and a trailer of respective DPON upstream packets, controlling a bit stuffer that adds bits to the upstream path to (1) stop adding bits to the upstream path when energy is detected in the upstream path and (2) resume adding bits to the upstream path after an end of a trailer of a given DPON upstream packet has been detected, and removing the header and the trailer of the respective DPON upstream packets. The resulting original payload is then digital to analog converted, and the resulting data is passed to, e.g., a cable modem termination system (CMTS).