Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-09-19
2006-09-19
To, Doris H. (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S466000
Reexamination Certificate
active
07110398
ABSTRACT:
A method and system for creating an ethernet-formatted packet from an upstream DOCSIS packet. The upstream packet is first received along with packet characteristic data that is contained in physical layer prepend data and in the packet header. A packet tag is then created, based on the packet characteristic data. The packet characteristic data includes identifiers for the transmitting remote device and the channel over which the transmission is sent. Packet characteristic data also includes information about the physical characteristics of the transmission signal, such as the power level and time offset. The packet characteristic data also includes administrative information, such as the minislot count at which the packet is received and whether the packet was received in contention. The packet tag is appended to the payload of the upstream packet. Also appended to the payload is an encapsulation tag, and source and destination address headers. The result is a packet in an ethernet format. The resulting packet can therefore be sent using the ethernet protocol. The packet includes information that characterizes a DOCSIS packet. In a distributed cable modem termination system, this additional characterizing information can be used by processes further upstream, such as packet classification. An analogous operation can take place with respect to packets going downstream. Here, a DOCSIS packet is formed at an intermediate node, on the basis of a received ethernet-formatted packet.
REFERENCES:
patent: 5742604 (1998-04-01), Edsall et al.
patent: 5999541 (1999-12-01), Hinchey et al.
patent: 6226771 (2001-05-01), Hilla et al.
patent: 6438123 (2002-08-01), Chapman
“BCM3300 QAMLink® Single-Chip DOCSIS Cable Modem” [online], BCM3300 Product Brief, Broadcom Corporation (1999) [retrieved on Jun. 25, 2003]. Retrieved from the Internet: <URL: http://www.broadcom.com/products/3300.html>(2 pages).
“BCM3310 QAMLink® Communications Processor” [online], BCM3310 Product Brief, Broadcom Corporation (1999) [retrieved on Jun. 25, 2003]. Retrieved from the Internet: <URL: http://www.broadcom.com/products/3310.html>(2 pages).
“BCM3300 QAMLink®Single-Chip DOCSIS/EURODOCSIS Cable Modem” [online], BCM3300 Product Brief, Broadcom Corporation (2003) [retrieved on Sep. 25, 2003]. Retrieved from the Internet: <URL: http://www.broadcom.com/products/3300.html>(2 pages).
“BCM3310 QAMLink®Communications Processor” [online], BCM3310 Product Brief, Broadcom Corporation (2003) [retrieved on Sep. 25, 2003]. Retrieved from the Internet: <URL: http//www.broadcom.com/products/3310.html>(2 pages).
“Radio Frequency Interface Specification SP-RFIV1.1-105-000714” [online], Data-Over-Cable Service Interface Specifications, Cable Television Laboratories (Jul. 14, 2000) [retrieved on Mar. 20, 2002]. Retrieved from the Internet: <URL: http://www.docsis.org/docs/SP-RF1v1.1-105-000714.pdf>(p. 171, paragraph 8,4: p. 178, last paragraph: figures 8-11, 8-12, 8-13, 8-14, and 8-15).
Sumner, M., “DOCSIS 1.1 Overview” [online], Cable Labs (May 3, 1999) (retrieved on Apr. 18, 2001). Retrieved from the Internet: <URL: http://www.cablemodem.com/Euroll—Overview.pdf> (16 pages).
Quigley, T.J., “Cablemodem Standards for Advanced Quality of Service Deployments,”Consumer Electronicspp. 282-283, ICCE (Jun. 22, 1999).
European Search Report for European Application No. 02250218.1, Issued on Aug. 7, 2003.
Gomez Francisco J
Grand Gerald
Lee R. Jeff
Pantelias Niki R
Zelnick Michael
Broadcom Corporation
Sterne, Kessler, Goldstein & Fox P.L.L.C
To Doris H.
Wilson Robert W.
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