Broadcom Corporation

Society of Cable Telecommunications Engineers, Inc.

General Instrument Corporation

Cable Television Laboratories, Inc.

Daniel Harvey Howard

Thomas J Kolze

Bruce Joseph Currivan

Dolors Sala

Eric Jon Ojard

Jonathan S Min

John O Limb

Richard Protus

James Chi Thi

Thomas J Quigley

Gottfried Ungerboeck

Niki Roberta Pantelias

Nambi Seshadri

Richard Stephen Prodan

David Michael Pullen

Joel I Danzig

Fred Bunn

Thomas L Johnson

Scott Cummings

Christopher Dale Bastian

Thomas Martin Davidson

Dean Stoneback

John D Horton, Jr

Stephen Hughey

Steven Richard Harris

James Harrell

Pamela Ann Nobles

Nabil R Yousef

Ajay Chandra V Gummalla

John Ulm

John Daniel Horton

Robert L Howald

Mark Louis Dzuban

William Ngai

Thomas J Quigley, Jr

Jay Harrell

Stephen Hughley

Tom Quigley

Hanna S Hsu

Dean Alan Stoneback

Derek Ralph DiGiacomo

Niem Hoang Dang

System, methods, and devices for measuring the performance of a component of a communications network recently installed by a technician using proactive network maintenance parameters, and further assessing the installation performed by the technician.

Systems and methods for remote evaluation of craft skills

A system and method for the software and hardware-based management and control of overall energy consumption in a telecommunications network is described. The energy consumption management in broadband telecommunications networks is accomplished via an adaptive power system interface and network energy controller that has access to the energy management systems, subsystems, features, individual components and configurations of equipment and services within the network, and provides energy consumption control of an entire network or a portion thereof using a plethora of different types of equipment, equipment or software features, equipment cards, ports, devices, systems, and entire facilities within a network.

System and method for energy consumption management in broadband telecommunications networks via adaptive power management

A system, method and computer program product is provided for mitigating the effects of burst noise on packets transmitted in a communications system. A transmitting device applies an outer code, which may include, for example, a block code, an exclusive OR (XOR) code, or a repetition code, to one or more packets prior to adaptation of the packets for transmission over the physical (PHY) layer of the communications system, wherein the PHY layer adaptation may include FEC encoding of individual packets. The outer coded packets are then separately transmitted over a channel of the communications system. A receiving device receives the outer coded packets, performs PHY level demodulation and optional FEC decoding of the packets, and then applies outer code decoding to the outer coded packets in order to restore packets that were erased during transmission due to burst noise or other impairments on the channel.

System and method for mitigating burst noise in a communications system

Signal processing under attenuated transmission conditions. Within an orthogonal signal space, the number of orthogonal signals that are used to transmit information from a transmitter to a receiver is reduced and the transmitted power of each of the now remaining orthogonal signals is modified; this may involve increasing the power of all of the remaining orthogonal signals equally or alternatively modifying them individually. The same modulation used before the reduction may also be used afterwards; within communication systems having multiple transmitter-receiver paths, this will ensure that the communication system's throughput and efficiency will remain unchanged even when one (or more) transmitter-receiver paths are highly attenuated. In addition, robust mode operation is provided for ranging and registering of transmitter devices when entering the communication system. In addition, the unused orthogonal signals may be employed to support interference cancellation of those orthogonal signals that are used to transmit information.

Signal processing under attenuated transmission conditions

Downstream synchronous multichannel (DSSM) communications are provided among a plurality of carriers, each being a completely DOCSIS&#x2122; 2.0-compliant downstream. The synchronous multichannels support communications with both DSSM-capable communications nodes and non-DSSM-capable communications nodes (e.g., legacy cable modems). Non-DSSM packets are transmitted on a single channel. DSSM packets are split into multiple pieces, which are transmitted simultaneously on all available channels. Since the physical delay variation (e.g., group delay change) across the adjacent carriers is small (on the order of a symbol time), the multiple pieces arrive at the receiving communications nodes at nearly the same time and can be reassembled with minimal buffering and no packet ordering problems. To avoid causing trouble for the non-DSSM-capable communications nodes, the packet pieces are encapsulated with a header that causes the non-DSSM-capable communications nodes to silently discard them.

Multichannels for a communications management system

In a wireless communication system, a multi-source data multiplexing system (e.g., a media access control (MAC)) accepts information packets from a plurality of signal sources, evaluates the relative efficiencies of data transmission, and transmits the information packets in provided grant regions for maximum efficiency. The multi-source data multiplexing system may accept any form of information packet from any form of signal source. The system receives a grant region, typically including a transmission time on a data channel, and inserts an information packet into the grant region. The actual information packet placed in the grant region may be one other than the packet for which the grant region was intended. Further, the multi-source data multiplexing system may fragment an information packet and transmit only a portion of the information packet in the grant region. Alternately, the multi-source data multiplexing system may concatenate multiple information packets, or information packet fragments, from any combination of signal sources and transmit the concatenated result in the grant region. As long as any signal source is active, the composite flow of information packets remains active, and the composite flow then serves as the primary mechanism for requesting and transmitting additional bandwidth in the wireless communication system.

Methods of allocating packets in a wireless communication system

A device for stacking signals in an expanded frequency range includes an upconverter and a multiplexer. The upconverter is configured to receive upstream signals that are in a first frequency range, upconvert some of the upstream signals that are in a first frequency sub-range of the first frequency range and pass some of the upstream signals that are in a second frequency sub-range of the first frequency range. The multiplexer is configured to stack the upconverted upstream signals and the upstream signals in the second frequency sub-range and output the stacked upstream signals.

System for stacking signals in an expanded frequency range

A filter settings generation operation includes sampling a communication channel to produce a sampled signal. The sampled signal is spectrally characterized across a frequency band of interest to produce a spectral characterization of the sampled signal. This spectral characterization may not include a signal of interest. The spectral characterization is then modified to produce a modified spectral characterization. Filter settings are then generated based upon the modified spectral characterization. Finally, the communication channel is filtered using the filter settings when the signal of interest is present on the communication channel. In modifying the spectral characterization, pluralities of spectral characteristics of the spectral characterization are independently modified to produce the modified spectral characterization. Modifications to the spectral characterization may be performed in the frequency domain and/or the time domain. One particular spectral modification that is performed is raising of the noise floor of the spectral characterization to meet a budgeted signal-to-noise ratio. Other spectral modifications include modifying spectral components corresponding to an expected interfering signal. In modifying these spectral characterizations, spectral components corresponding to a plurality of expected interfering signals may be modified.

System and method for canceling interference in a communication system

Downstream synchronous multichannels for a communications management system

Growing community of inventors

Atlanta, GA, United States of America

Daniel Harvey Howard