Wideband DOCSIS on catv systems using port-trunking

Details Wideband DOCSIS on catv systems using port-trunking Wideband DOCSIS on catv systems using port-trunking

2006-04-04

2006-04-04

Ton, Dang (Department: 2666)

Multiplex communications

Channel assignment techniques

Adaptive selection of channel assignment technique

C370S465000, C725S111000

Reexamination Certificate

active

07023871

ABSTRACT:
Method and apparatus to carry out wideband DOCSIS both upstream and downstream in a point-to-multipoint environment of an HFC system using port trunking concepts. For the downstream, each CMTS has a frame distributor which distributes frames to various transmitters transmitting on downstream channels to be used to transmit downstream data simultaneously to a CM using wideband DOCSIS. The frame distributor adds sequence numbers in some embodiments to guarantee proper order of frames can be restored at the CM, and schedules transmissions according to quality of service considerations to meet guaranteed and committed portions of constant bit rate and variable bit rate flows. The CMTS sends and Extended Channel Enable (ECE) message to wideband capable CMs telling them which downstreams to enable. Each CM has a frame collector to which all frames received on various downstream channels are sent. The frame collector makes sure they are all there, puts them into the proper order and delivers them to a NI. Upstream wideband DOCSIS works the same way with a frame distributor in each CM and a frame collector in the CMTS. The CMTS receives bandwidth requests and controls upstream wideband DOCSIS transmissions by sending downstream UCD and MAP and ECE messages to the CMs instructing them which upstream channels to use, describing the parameters of the channel and assigning times for transmission which are simultaneous on multiple channels for upstream wideband capable CMs.

REFERENCES:
patent: 6704372 (2004-03-01), Zhang et al.
patent: 6804251 (2004-10-01), Limb et al.
patent: 2002/0131403 (2002-09-01), Desai et al.
patent: 2002/0131426 (2002-09-01), Amit et al.
patent: 2002/0132629 (2002-09-01), Desai et al.
patent: 2002/0133618 (2002-09-01), Desai et al.
patent: 2003/0058885 (2003-03-01), Sorenson et al.
patent: 2003/0083054 (2003-05-01), Francesca et al.
patent: 2004/0076181 (2004-04-01), Pantelias et al.
patent: 2004/0163129 (2004-08-01), Chapman et al.
Fellows, David, et al, “DOCSIS Cable Modem Technology”, Mar. 2001, IEEE Communications Magazine, pp. 202-209.
Dutta-Roy, Amitava, “An Overview of Cable Modem Technology and Market Perspectives”, Jun. 2001, IEEE Communications Magazine, pp. 81-88.
IEEE Standard 802.3 Year 2000 Edition.
Desai et al.,FastChannel: A Higher Speed Data Service, AT&T Labs-Research, Published early 2002 on information and belief.

Affiliated with

Also associated with

Rating

Wideband DOCSIS on catv systems using port-trunking does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wideband DOCSIS on catv systems using port-trunking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wideband DOCSIS on catv systems using port-trunking will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3538487