Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2005-06-21
2005-06-21
Ton, Dang (Department: 2666)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S412000
Reexamination Certificate
active
06909715
ABSTRACT:
Upstream requests such a bandwidth requests, are processed by CMTS out of order on a priority basis to reduce latency in responding to the request. Specifically, a cable modem termination system (CMTS) is connected to a plurality of cable modems by a cable plant. The CMTS has a burst receiver adapted to be connected to the cable plant to process upstream data packet units and bandwidth requests transmitted by the cable modems. Each packet includes a header that uniquely distinguishes the bandwidth requests from other data types. Packet data units are arranged in a first memory queue. Bandwidth requests are arranged in a second memory queue. The headers of the packets processed by the burst receiver are inspected as they arrive at the CMTS to determine if the packets are packet data units or bandwidth requests. Packet data units are routed to the first memory queue. Bandwidth requests are routed to the second memory queue. Bandwidth allocation MAP messages are generated from the bandwidth requests stored in the second queue and transmitted downstream to the cable modems. The packet data units stored in the first queue are coupled to a data output for further distribution.
REFERENCES:
patent: 5448559 (1995-09-01), Hayter et al.
patent: 5677906 (1997-10-01), Hayter et al.
patent: 6298049 (2001-10-01), Vanhoof et al.
patent: 6304578 (2001-10-01), Fluss
patent: 6396829 (2002-05-01), Witschorik
patent: 6452933 (2002-09-01), Duffield et al.
patent: 6546017 (2003-04-01), Khaunte
patent: 6584071 (2003-06-01), Kodialam et al.
patent: 6597699 (2003-07-01), Ayres
patent: 6778531 (2004-08-01), Kodialam et al.
patent: 0 829 986 (1998-03-01), None
patent: WO 99 61993 (1999-12-01), None
Microsoft Corporation, “Quality of Service and DOCSIS Networks,” Microsoft Website, Aug. 19, 1999, pp. 1-4.
Copy of International Search Report for International Application No. PCT/US 00/24072, filed Aug. 31, 2000.
U.S. Appl. No. 09/574,558, filed May 19, 2000, Quigley et al.
U.S. Appl. No. 09/652,861, filed Aug. 31, 2000, Horton Jr. et al.
U.S. Appl. No. 09/653,155, filed Aug. 31, 2000, Hebsgaard et al.
U.S. Appl. No. 09/654,109, filed Aug. 31, 2000, Quigley et al.
Denney Lisa V.
Hebsgaard Anders
Lee Robert J.
Broadcom Corporation
Sterne Kessler Goldstein & Fox PLLC
Ton Dang
Tran Phuc
LandOfFree
Method and apparatus for the reduction of upstream request... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the reduction of upstream request..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the reduction of upstream request... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3514610