Supporting multiple logical channels in a physical interface

Details Supporting multiple logical channels in a physical interface Supporting multiple logical channels in a physical interface

2002-10-17

2009-08-18

Kizou, Hassan (Department: 2419)

Multiplex communications

Communication over free space

Combining or distributing information via time channels

C370S421000, C370S442000, C725S095000, C725S111000, C725S144000

Reexamination Certificate

active

07577129

ABSTRACT:
A supervisory communications system (such as, a headend cable modem termination system) manages communications with a plurality of remote communications devices (such as, a cable modem). The supervisory system enables each of its physical channels to have multiple logical channels, with each logical channel having differing channel parameters or operating characteristics. As a result, different types of communication devices are permitted to coexist on the same physical spectrum. In other words, a communications device using, for example, spread spectrum modulation technologies require different operating characteristics than a communications device using, for example, time division multiplexing technologies. Although physical layer transmissions from these communications devices are not compatible, the present invention provides methodologies and/or techniques that define multiple logical channels that allow these communications devices to share the same physical spectrum of a transmission medium (such as, a HFC cable plant, wireless path, etc.) and send upstream transmissions to a single upstream receiver.

REFERENCES:
patent: 5546391 (1996-08-01), Hochschild et al.
patent: 6742187 (2004-05-01), Vogel
patent: 6940874 (2005-09-01), Ruszczyk et al.
patent: 7050419 (2006-05-01), Azenkot et al.
patent: 7336680 (2008-02-01), Sorenson et al.
patent: 7349730 (2008-03-01), Ein-Gal
patent: 7426744 (2008-09-01), Denney et al.
patent: 7496110 (2009-02-01), Beser
patent: 2002/0061012 (2002-05-01), Thi et al.
patent: 2002/0101883 (2002-08-01), Ruszczyk et al.
patent: 1 235 402 (2002-08-01), None
patent: W0 00/48420 (2000-08-01), None
Cable Television Laboratories, “Data-Over-Cable Service Interface Specifications: Radio Frequency Interface Specification, SP-RFIv1.1-I07-010829”, Seventh Interim Release, Aug. 29, 2001.
Cable Television Laboratories, “Data-Over-Cable Service Interface Specifications: Radio Frequency Interface Specification, SP-RFIv1.1-I07-010829”, Seventh Interim Release, Aug. 29, 2001, additional pages cited.
“CableLabs® Achieves Industry ‘First’ with Certification for DOCSIS™ 2.0” [online], CableLabs® Press Release [retrieved on Feb. 6, 2003]. Retrieved from the Internet: <URL: http://www.cablelabs.com
ews/pr/2002/02—pr—docsis—cw24—121902.html> (3 pages).
“Docsis 2.0 More Throughput for All” [online], CED Magazine (Jun. 2002), Reed Business Information [retrieved on May 21, 2003]. Retrieved from the Internet: <URL: http://www.cedmagazine.com/ced/2002/0602/06wc.htm> (5 pages).
“Data-Over-Cable Service Interface Specfications, Radio Frequency Interface Specification, SP-RFIv2.0-103-021218,” Cable Television Laboratories, Inc. (Dec. 18, 2002), pp. i-xiii, 16, 20, 73-74, 107, 109-110, 132-133, 179-180, 190-191, 416, 437, and 439-440.
European Search Report from Appl. No. EP 03 02 3446, completed Apr. 13, 2004, 3 pages.

Affiliated with

Also associated with

Rating

Supporting multiple logical channels in a physical interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Supporting multiple logical channels in a physical interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Supporting multiple logical channels in a physical interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4139536