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:
Sep. 20, 2005
Filed:
Sep. 13, 2001
Gautam Desai, Westford, MA (US);
Subrahmanyam Dravida, Shrewsbury, MA (US);
Satya V. Gupta, Acton, MA (US);
Kiran M. Rege, Marlboro, NJ (US);
Manas Tandon, Waltham, MA (US);
Ravi S. Kumar, Shrewsbury, MA (US);
Dequan Wu, Nashua, NH (US);
Gautam Desai, Westford, MA (US);
Subrahmanyam Dravida, Shrewsbury, MA (US);
Satya V. Gupta, Acton, MA (US);
Kiran M. Rege, Marlboro, NJ (US);
Manas Tandon, Waltham, MA (US);
Ravi S. Kumar, Shrewsbury, MA (US);
DeQuan Wu, Nashua, NH (US);
Narad Networks, Inc., Westford, MA (US);
Abstract
Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals, or messages, are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. Messages indicative of an end user routing ID (RID) are identified and the information extracted for user with successive messages. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.