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:
Aug. 01, 2006
Filed:
Oct. 30, 2001
Mikhail Voldman, Northbrook, IL (US);
Dan Budinger, Arlington Heights, IL (US);
Ali Akgun, Chicago, IL (US);
John G. Fijolek, Naperville, IL (US);
Mark O. Vogel, Hampshire, IL (US);
Kris Kelkar, Camarillo, CA (US);
Mikhail Voldman, Northbrook, IL (US);
Dan Budinger, Arlington Heights, IL (US);
Ali Akgun, Chicago, IL (US);
John G. Fijolek, Naperville, IL (US);
Mark O. Vogel, Hampshire, IL (US);
Kris Kelkar, Camarillo, CA (US);
3Com Corporation, Marlborough, MA (US);
Abstract
System and method for providing a multi-frequency upstream transmission channel to a network device. When a headend network entity generates an upstream channel descriptor message, the descriptor message includes at least two upstream frequencies available for upstream transmission, and a frequency hopping descriptor with a frequency-hopping pattern associated with the available frequencies for determining an upstream frequency for upstream transmission. The headend provides a timing reference for determining upstream transmission periods on the frequencies available on the network device. When the headend receives upstream transmission on one of the available upstream frequencies, the headend network entity determines frequency distortions. If the distortions exceed a threshold level, the headend may send a new upstream channel descriptor message that excludes the upstream frequency associated with the high frequency distortions, add a new upstream frequency, or defines a new frequency-hopping pattern.