Comcast Cable Communications, LLC

Comcast Cable Communications Management, LLC

Jorge Salinger

David Urban

Vik Saxena

Mark David Francisco

John Bevilacqua

Saifur Rahman

Weidong Mao

Jim Poder

Phillip Chang

Erami Botchway

James W Fahrny

Maurice Manuel Garcia

Kevin Norman Taylor

Chris Bastian

Larry Wolcott

Robert Gonsalves

Sam Chernak

Michael Pettit

Joseph Solomon

Ty Pearman

Methods and systems are disclosed for delivery of notification messaging in an IP network. A multicast gateway may receive manifest files and segments of programming content for retrieval by a client device. The multicast gateway may receive segments of a notification message and modify information in the manifest file to reference the notification message content. Upon retrieval of the manifest file by a client device, the client may access the notification message content referenced in the manifest file. The multicast gateway may replace references to programming content with references to notification message content having a corresponding content type.

Delivering notification information

A bandwidth allocation and monitoring method may divide available bandwidth on a shared communication medium into a plurality of discrete tones that can be individually allocated to modems on an as-needed basis. The effective modulation rate that a particular modem can use for each discrete tone can be monitored over time using a schedule of pilot tones transmitted from the modems on different tones at different times. The schedule may define representative pilot tones, in which case effective modulation rates for neighboring tones may be inferred from a determined effective modulation rate of a pilot tone.

Managing upstream transmission in a network

A network management system may allocate different amounts of bandwidth to different types of data traffic. The traffic types may be distinguished by their source device address, and whether the source device is part of, or external to, a first network. Packets may also be marked by their sender with information to identify a traffic type, and the marking may be used to determine the packet's treatment. The allocations given to the various types of traffic may be dynamically modified with changing traffic demands and conditions.

Data network traffic management

Digital information can be carried on the fiber leg of an access network using binary modulation. Binary modulated data received at an O/E node can then be modulated onto an analog waveform using quadrature amplitude modulation or some other technique for modulating an analog waveform and transmitted over, for example, the coaxial leg of the network. The O/E node may also receive an analog signal, over the coaxial leg, modulated to carry upstream data from subscriber devices. The O/E node may demodulate the upstream signal to recover the upstream data and forward that upstream data over the fiber leg using a binary modulated optical signal.

Hybrid fiber coaxial node

Signals may be forwarded to a variety of ports for transmission. The signals may be modulated for transmission. The forwarding of signals to ports may be accomplished by forwarding the signals to one or more signal modulators using a processing unit. The mapping of signals to ports may change responsive to a triggering event.

Dynamic assignment of signals to ports in an access platform

Methods and systems for interference management are described. Methods and systems can be used for minimizing interference among communication and/or electronic devices. Interference data can be gathered/received from interference sources such as weather and natural patterns, various electronic devices, and one or more network protocols. The interference data can be used to generate interference patterns of each interference source in an interference map. The interference map can be used to determine how a particular interference pattern can affect a system. The interference map can also be used to evaluate a new source of interference (e.g., cordless phones, weather conditions) to determine how a system can be affected. The interference data can also be associated with an interference signature (e.g., an interference pattern, a fingerprint) for an interference source in a database. The database can be used based on the interference signature to identify known and/or unknown interference sources.

Methods and systems for interference management

Described herein is a system and method for determining one or more data modulation profiles for one or more devices. The system and method described herein may measure signal quality, such as a modulation error ratio (MER), signal-to-noise ratio (SNR), receive power, transmit power, etc. Based on the signal quality, the system may determine one or more data modulation profile(s) (e.g., quadrature amplitude modulation (QAM) profiles) for a subcarrier, a plurality of subcarriers, a device, and/or a grouping of devices.

Determining one or more data modulation profiles for one or more devices

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Littleton, CO, United States of America

Jorge Salinger