Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-12-12
2006-12-12
Kizou, Hassan (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S485000, C725S149000
Reexamination Certificate
active
07149223
ABSTRACT:
Enhanced Cable Modem Termination System (CMTS) functionality, including programmable digital domain modulators and demodulators for dynamic channel assignment, is incorporated into Fiber Nodes (FNs) or mini Fiber Nodes (mFNs), yielding enhanced Fiber Nodes (eFNs). These eFns distribute CMTS functionality deep into Hybrid-Fiber-Coax Networks (HFCN) rather than centralizing the CMTS functions within a single location. Moving the cable modem terminations closer to the subscribers shortens the analog RF paths required to support cable modems. Communication of both subscriber data and CMTS control data is performed over Ethernet-compatible packet networks between the field-based CMTSs and an upstream facility (e.g., the Head End), which includes an Internet gateway. Packet data for multiple subscriber cable modems is easily compressed and merged over common network paths, reducing cabling plant complexity and increasing bandwidth utilization. This approach dramatically reduces the infrastructure cost per cable modem. Distributing CMTS functionality among multiple eFNs also reduces demands on already stretched resources at the Head End for space, power, and HVAC. For HFCN channels containing signals with modulation or encoding schemes that are unknown or best processed upstream, the invention also provides for tunneling their spectrum over the same packet network as used for the cable modem data. The channels to be tunneled are isolated using digital receivers, translated to baseband, their data framed, merged with cable modem subscriber data, and transmitted over the packet network. Upstream, the framed channel data is parsed and the original channel spectrum reconstructed to permit information recovery.
REFERENCES:
patent: 5361091 (1994-11-01), Hoarty et al.
patent: 5528582 (1996-06-01), Bodeep et al.
patent: 5533023 (1996-07-01), Ohlson et al.
patent: 5590156 (1996-12-01), Carney
patent: 5654765 (1997-08-01), Kim
patent: 5768682 (1998-06-01), Peyrovian
patent: 5841468 (1998-11-01), Wright
patent: 5878325 (1999-03-01), Dail
patent: 5903550 (1999-05-01), Spock
patent: 5930231 (1999-07-01), Miller et al.
patent: 5943604 (1999-08-01), Chen et al.
patent: 6021158 (2000-02-01), Schurr et al.
patent: 6075787 (2000-06-01), Bobeck et al.
patent: 6088399 (2000-07-01), Luz et al.
patent: 6147713 (2000-11-01), Robbins et al.
patent: 6160572 (2000-12-01), Matsuura
patent: 6233235 (2001-05-01), Burke et al.
patent: 6236678 (2001-05-01), Horton, Jr. et al.
patent: 6263195 (2001-07-01), Niu et al.
patent: 6282184 (2001-08-01), Lehman et al.
patent: 6356374 (2002-03-01), Farhan
patent: 6449071 (2002-09-01), Farhan et al.
patent: 6452424 (2002-09-01), Shamlou et al.
patent: 6490727 (2002-12-01), Nazarathy et al.
patent: 6519773 (2003-02-01), Ahmed et al.
patent: 6574797 (2003-06-01), Naegeli et al.
patent: 6594305 (2003-07-01), Roeck et al.
patent: 6608837 (2003-08-01), Brodigan
patent: 6650624 (2003-11-01), Quigley et al.
patent: 6721371 (2004-04-01), Barham et al.
patent: 6751230 (2004-06-01), Vogel et al.
patent: 6768722 (2004-07-01), Katseff et al.
patent: 6778525 (2004-08-01), Baum et al.
patent: 6785292 (2004-08-01), Vogel
patent: 6839413 (2005-01-01), Brock et al.
patent: 2002/0118739 (2002-08-01), Schier et al.
patent: 2004/0213358 (2004-10-01), Patel et al.
patent: 2005/0097617 (2005-05-01), Currivan et al.
Alok Sharma, co-pending U.S. Appl. No. 09/800,397, filed Mar. 5, 2001, entitled “Transceiver Channel Bank with Reduced Connector Density”, 45 pp.
Valentino Liva et al., co-pending U.S. Appl. No. 09/715,992, filed Nov. 16, 2000, entitled “Methods and Apparatus for Transmission of Analog Channels Over Digital Packet Networks”, 57 pp.
“Data-Over-Cable Service Interface Specifications: Radio Frequency Interface Specification”, SP-RFIv1.1-103-991105, 1999 Cable Television Laboratories, Inc., 382 pp.
Valentino Liva et al., co-pending U.S. Appl. No. 10/033,383, filed Oct. 24, 2001, entitled “Enhanced CMTS for reliability, availability, and serviceability”, 58 pp.
US International Search Authority, International Search Report, PCT/USO1/45799, Mailed May 3, 2002, Washington, D.C. 20231.
Fabien Buda; U.S. Appl. No. 09/974,030; entitled Multiple Input Multiple Output Channel, Digital Receiver Tuner; filed Oct. 10, 2001; 39 pages.
Liva Valentino
Sharma Alok
Smith Lance
Yee James
Harrity & Synder LLP
Juniper Networks, Inc.
Kizou Hassan
Scheibel, Jr. Robert C.
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