Alok Sharma, 50502 N Court St, Fairfield, IA 52556

6993016, Jan 31, 2006

Nov 16, 2000

09/715992

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04L 12/66

370356, 370465, 725106

Methods and apparatus are provided for tunneling (transparently transmitting) over a packet network, from a source to a destination, the spectrum of one or more bandpass channels individually selected from a larger spectrum at the source. Each channel is selected, translated to baseband (using sampling techniques), digitized, framed, merged with other digital services, transmitted (along with associated attribute information) using packet techniques, and later reconstructed. The present invention provides a selective and efficient use of available bandwidth, in that it is not necessary to transmit the entire spectrum, when only one or few portions of the spectrum are desired. This in turn, reduces bandwidth requirements all along the transmission path and at the source and destination. The reduced bandwidth requirements have associated reductions in power and costs.

7099340, Aug 29, 2006

Oct 24, 2001

10/033383

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US
James Yee - Union City CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04L 12/28
H04L 12/56
H05K 5/00
H05K 7/00

370401, 361679

A Cable Modem Termination System (CMTS) is partitioned into Line Cards, I/O Cards, and a midplane to provide enhanced Reliability, Availability, and Serviceability. Each I/O Card provides a cabling interface for coupling an assigned Line Card to other portions of a Hybrid-Fiber-Coax Network. A plurality of RF signals is coupled via connectors between each Line Card and a corresponding I/O Card, via the midplane. This permits a Line Card to be removed for servicing without requiring recabling of the corresponding I/O Card. Preferably, a rectangular-multi-pin collinear connector-cascade (Line Card jack, midplane double-plug, and I/O Card jack) is used to couple the plurality of RF signals. The connector-cascade is configured with protective RF ground pins adjacent and surrounding each of a plurality of RF signal pins. This approach permits each Line Card to be removed or inserted in a single action, without attention to individual RF interconnects, yet meets all system RF requirements while using relatively inexpensive connectors. The I/O Cards preferably include a distributed backup bus that permits one of the Line Cards in the CMTS to serve as a designated backup.

7149223, Dec 12, 2006

Oct 24, 2001

10/033378

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US
James Yee - Union City CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04N 7/173
H04B 1/38

370401, 370485, 725149

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.

7623532, Nov 24, 2009

Oct 27, 2006

11/553882

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US
James Yee - Union City CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04L 12/56
H04N 7/00

370401, 370486, 725127, 725148

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.

7623537, Nov 24, 2009

Jun 21, 2006

11/425612

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US
James Yee - Union City CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04L 12/28
H04L 12/56
H05K 5/00

370419, 700100, 361679

A network device and system are provided. The network device may include a chassis configured to receive a line card and an input/output (I/O) card that operatively connects to a network via cabling. The chassis may include a bus structure. The bus structure may include an I/O interface to couple to a chassis interface of the I/O card, and a line card interface to couple to a chassis interface of the line card using a connector away that includes at least one RF conductor which may be associated with a set of connectors configured to shield the at least one RF conductor.

7953125, May 31, 2011

Jul 9, 2009

12/500483

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US
James Yee - Union City CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04J 99/00

370546, 439 92, 43960705

A Cable Modem Termination System (CMTS) is partitioned into Line Cards, I/O Cards, and a midplane to provide enhanced Reliability, Availability, and Serviceability. Each I/O Card provides a cabling interface for coupling an assigned Line Card to other portions of a Hybrid-Fiber-Coax Network. A plurality of RF signals is coupled via connectors between each Line Card and a corresponding I/O Card, via the midplane. This permits a Line Card to be removed for servicing without requiring recabling of the corresponding I/O Card. Preferably, a rectangular-multi-pin collinear connector-cascade (Line Card jack, midplane double-plug, and I/O Card jack) is used to couple the plurality of RF signals. The connector-cascade is configured with protective RF ground pins adjacent and surrounding each of a plurality of RF signal pins. This approach permits each Line Card to be removed or inserted in a single action, without attention to individual RF interconnects, yet meets all system RF requirements while using relatively inexpensive connectors. The I/O Cards preferably include a distributed backup bus that permits one of the Line Cards in the CMTS to serve as a designated backup.

8270419, Sep 18, 2012

Oct 9, 2009

12/576958

Valentino Liva - Los Altos CA, US
Alok Sharma - San Jose CA, US
Lance Smith - San Jose CA, US
James Yee - Union City CA, US

Juniper Networks, Inc. - Sunnyvale CA

H04L 12/56
H04N 7/00

370401, 370486, 725127, 725148

A fiber node may include a cable modem termination system (CMTS) that includes a first receiver to receive first signals from a plurality of cable modems over a plurality of upstream channels, and extract data from the first signals; a second receiver to receive second signals, the second signals being in a different format than the first signals; and a processor, connected to the first receiver and the second receiver, to receive the extracted data from the first receiver, receive the second signals from the second receiver, compress the extracted data and the second signals, merge the extracted data and the second signals, and transmit, to an upstream facility, the merged extracted data and the second signals over a common network path.

2001004, Nov 29, 2001

Mar 2, 2001

09/798437

Alok Sharma - San Jose CA, US

H04L027/14

375/324000

The channel bank architecture of the present invention reduces connector density, reduces costs and other bulk components, and improves the system noise performance. The connector density is reduced through an architecture that digitizes the entire upstream spectrum and buses the digitized result to the input of multiple digital receivers. The digital receivers have all digital hardware-based filters and demodulators. Stored prototype D.C. coefficients are bandpass transformed, enabling the receivers to be programmed to essentially any arbitrary center frequency over a wide-range of bandwidths, and provide great frequency agility. Reprovisioning is possible by sending commands to the line card. The number of receiver inputs, associated connectors, and associated splitter taps is reduced by a factor of 1/M. In an illustrative embodiment, M is 16. Taking into account the total number of connectors for both upstream and downstream connectors, the connector count is reduced by a factor 1/T, where T is a function of the D/U ratio and M. In an illustrative embodiment T is 4. In an illustrative 4D×16U CMTS channel bank embodiment, having 4 downstream channels and 16 upstream channels, four connectors are required for the downstream channels and only a single connector is required for all 16 upstream channels. The illustrative embodiment thus has 5 total connectors, compared to 20 total connectors in a comparable prior art system.