At+t Corp.

At&t Intellectual Property I, LP

Other

Aleksandra Smiljanic

Nicholas J Frigo

Patrick P Iannone

Kenneth Charles Reichmann

Nemmara K Shankaranarayanan

Jacobus Erasmus Van Der Merwe

Sheryl Leigh Woodward

David Hilton Shur

Bhavesh N Desai

Todd J Totland

Mikhail Boroditsky

Cedric F Lam

Mikhail Borditsky

Todd L Totland

A method includes dividing, at a cable modem termination system, a transmit stream into multiple data streams. The multiple data streams include a first data stream and a second data stream. Each of the multiple data streams has a lower bit rate than a bit rate of the transmit stream. The method includes transmitting, via the cable modem termination system, the first data stream over at least a first channel of a group of channels. The method also includes transmitting, via the cable modem termination system, the second data stream over at least a second channel of the group of channels. The group of channels supports traffic to a plurality of destinations. The first channel and the second channel are frequency-division multiplexed channels.

Data service including channel group

A method at a cable modem termination system includes dividing a transmit stream into multiple data streams and transmitting the multiple data streams over multiple radio frequency channels of a group of channels. The group of channels supports traffic to a plurality of destinations. Each channel in the group of channels is a downstream channel.

A method includes receiving, at a transmit site, a first stream of packets addressed to an end user device in a first address space. The first stream of packets is encapsulated to form a second stream of packets addressed in a second address space. A first packet of the second stream of packets is assigned to a first radio frequency channel of a plurality of radio frequency channels. A second packet of the second stream of packets is assigned to a second radio frequency channel of the plurality of radio frequency channels. The first packet is transmitted via the first radio frequency channel and, in parallel, the second packet is transmitted via the second radio frequency channel.

Devices and methods to communicate data streams

A packet-switched WDMA ring network has an architecture utilizing packet stacking and unstacking for enabling nodes to access the entire link capacity by transmitting and receiving packets on available wavelengths. Packets are added and dropped from the ring by optical switches. A flexible credit-based MAC protocol along with an admission algorithm enhance the network throughput capacity.

High-capacity packet-switched ring network

A system and method for a transparent WDM metro ring architecture in which optics enables simultaneous provisioning of dedicated wavelengths for high-end user terminals, while low-end user terminals share wavelengths on 'virtual rings'. All wavelengths are sourced by the network and remotely modulated at customer 'End Stations' by low cost semiconductor optical amplifiers, which also serve as transmission amplifiers. The transparent WDM metro ring architecture permits the communication of information and comprises a fiber optical feeder ring, at least one fiber optical distribution ring, a network node (NN), at least one access node (AN) said network node and said at least one access node connected via said fiber optical feeder ring and at least one end station (ES) connected via said fiber optical distribution ring to said at least one access node, wherein said user is attached to said at least one end station.

System and method for operating transparent node for WDM shared 'virtual ring' networks

Apparatus for flexible sharing of bandwidth in switches with input buffering by dividing time into a plurality of frames of time slots, wherein each frame has a specified integer value of time slots. The apparatus includes modules where inputs sequentially select available outputs to which the inputs send packets in specified future time slots. The selection of outputs by the inputs is done using a pipeline technique and a schedule is calculated within multiple time slots.

Flexible bandwidth allocation in high-capacity grooming switches

A system and method for a transparent WDM metro ring architecture in which optics enables simultaneous provisioning of dedicated wavelengths for high-end user terminals, while low-end user terminals share wavelengths on 'virtual rings'. All wavelengths are sourced by the network and remotely modulated at customer 'End Stations' by low cost semiconductor optical amplifiers, which also serve as transmission amplifiers. The transparent WDM metro ring architecture permits the communication of information and comprises a fiber optical feeder ring, at least one fiber optical distribution ring, a network node (NN), at least one access node (AN) said network node and said at least one access node connected via said fiber optical feeder ring and at least one end station (ES) connected via said fiber optical distribution ring to said at least one access node, wherein said user is attached to said at least one end station. A simple node that supports bi-directional propagation in transparent WDM metro architectures using &#x201c;virtual rings&#x201d; is also described. A method for communicating information over a WDM fiber optical ring network architecture in a metro access arena using one or more wavelengths, which can be shared by a plurality of user terminals, each user terminal coupled to an end station comprises the steps of sending downstream data packets, sending optical chalkboard packets consisting of ones and sending control signals.

Method for operating transparent node for WDM shared 'virtual ring' networks

A receive device includes a plurality of demodulators and a tunnel destination. The demodulators are configured to receive multiple data streams, each of the multiple data streams having a bit rate that is lower than a bit rate of a transmit data stream. The tunnel destination is configured to recombine the multiple data streams to provide a receive data stream having a bit rate equal to the bit rate of the transmit data stream. At least one of multiple radio frequency channels is connected to a legacy user between a transmit site and the receive device.

Receive device for a cable data service

A method of sending data from a transmit site to a receive device includes dividing a first transmit data stream having a first bit rate into multiple data streams with each of the multiple data streams having a bit rate that is lower than the first bit rate. Each of the multiple data streams is transmitted over a cable network having multiple radio frequency channels. The multiple data streams are recombined at the receive device to provide a receive data stream having a bit rate equal to the first bit rate. A second transmit data stream is transmitted over one of the radio frequency channels to a legacy user connected to the one radio frequency channel between the transmit site and the receive device.

Method, system, and device for sending data in a cable data service

In a communication system using multicasting, multicast packets are forwarded through a switch by destination ports after these ports receive the packets. A source node sends the multicast packet to a subset of nodes within the multicast group, which in turn, forward the multicast packet to other subsets of packets within the multicast group that have yet to receive the information. This is continued until all ports within the multicast group have received the information.

Flexible multicasting in high-capacity switches

A method and apparatus for flexible sharing of bandwidth in switches with input buffering by dividing time into a plurality of frames of time slots, wherein each frame has a specified integer value of time slots. Counters associated with the input-output queues of the switches are loaded with a negotiated integer value once per frame. The inputs sequentially select available outputs to which the inputs send packets in specified future time slots. Priority is given to input-output queues with counters having positive values. The selection of outputs by the inputs is done using a pipeline technique and a schedule is calculated within multiple time slots. The counters for selected queues are then decremented by 1.

Growing community of inventors

Atlantic Highlands, NJ, United States of America

Aleksandra Smiljanic