Verizon Laboratories Inc.

Verizon Patent and Licensing Inc.

Gte Laboratories Incorporated

Verizon Services Corporation

Verizon Services Organization Inc.

Verizon Services Corp. & Verizon Services Organization Inc.

Level 3 Communications, LLC

Stephen S Liu

Lily F Chen

William James Moran

Dhaval V Thaker

Anurag K Mishra

Benjamin Pomales

Harry Edward Mussman

Vincent T Phuah

Alex E Tserkovny

Sayyid Siddiq Ali

Nee Ben Gee

Michael F Lane

Thomas M Chen

Hung-San Chen

Thomas R Helmes

Michael J Procanik

A system includes a plurality of resources. A network analysis device is configured to identify a shared risk between at least two of the resources. A method includes arranging a plurality of resources in a resource group, identifying, by at least one network analysis device, a shared risk between at least two of the plurality of resources, and assigning a shared risk identifier to each resource having the shared.

Management of shared risk group identifiers for multi-layer transport networks with multi-tier resources

Policy-based, on-demand provisioning of optical transport bandwidth is disclosed. In one of many possible embodiments, a system is provided for policy-based, on-demand provisioning of optical transport bandwidth. The system includes a layer-specific operation support subsystem (OSS) configured to manage network elements that form a sub-network over an optical transport network. The optical transport network provides bandwidth-on-demand provisioning capabilities. The layer-specific OSS includes one or more predefined bandwidth provisioning policies. The layer-specific OSS is configured to selectively request on-demand provisioning of bandwidth on the sub-network based on the predefined bandwidth provisioning policies.

Systems and methods for policy-based intelligent provisioning of optical transport bandwidth

The present disclosure relates to systems and methods for providing bandwidth-on-demand telecommunications services over next-generation optical transport networks (NG-OTN). One embodiment of a system providing bandwidth-on-demand services includes a next-generation optical transport network (NG-OTN) having an intelligent control plane (ICP) and new-generation synchronous optical network (NG-SONET) capabilities. A next-generation operation support subsystem (NG-OSS) is communicatively coupled to the NG-OTN. The NG-OTN and the NG-OSS are configured to provide the bandwidth-on-demand services.

Bandwidth-on-demand systems and methods

Method and apparatus for tracking, recording and distributing link state characteristics over communications networks. The invention allows network operators to efficiently define, track, store and disseminate link state characteristics using a bit-field-encoded resource record that is capable of representing many more link state characteristics than the bit-mask-encoded records used in existing systems. As a result, the present invention, when used in conjunction with standard routing and network maintenance algorithms, provides a much more efficient method than existing systems provide, for performing sophisticated networking tasks, such as handling complicated information transmission requests, setting up and tearing down network paths, and making dynamic routing decisions.

Bit-field-encoded resource record for determining a transmission path in a communications network

A network (,) includes a broadband customer service module (B-CSM) (,). The B-CSM (,) includes a plurality of feeder interface cards (FICs) (,) and optical line cards (OLCs) (,) which are coupled together through a midplane assembly (,) so that each FIC (,) couples to all OLCs (,) and each OLC (,) couples to all FICs (,) through junctor groups (,). Within the B-CSM (,) circuit switching is performed electrically at an STS-1 rate. A reference clock which oscillates at a frequency slower than the data rate is routed with payload data so that it receives delays similar to those imposed on the payload data due to processing. At second stage switching fabrics (,) where data need to be extracted from signals flowing within the B-CSM (,), a clock regeneration circuit (,) generates a master clock signal oscillating at twice the data rate and phase synchronized to a delayed reference clock. A geometric compensation scheme corrects for timing skew which occurs when clocks and data are distributed to points or small areas from widely dispersed locations, and when clocks and data are distributed from points or small areas to widely dispersed locations. A variation of the Q.931 signaling protocol is implemented to enable the B-CSM (,) to respond to a request from a second subscriber interface unit (SIU) (,) to view a video program currently being delivered to a first SIU (,). The second SIU (,) need not have access to the identity of the video program before sending the switching request.

Broadband video switch that performs program merging and method therefor

A network (,) includes a broadband customer service module (B-CSM) (,). The B-CSM (,) includes a plurality of feeder interface cards (FICs) (,) and optical line cards (OLCs) (,) which are coupled together through a midplane assembly (,) so that each FIC (,) couples to all OLCs (,) and each OLC (,) couples to all FICs (,) through junctor groups (,). A reference clock which oscillates at a frequency slower than the data rate is routed with payload data so that it receives delays similar to those imposed on the payload data due to processing. At second stage switching fabrics (,) where data need to be extracted from signals flowing within the B-CSM (,), a clock regeneration circuit (,) generates a master clock signal oscillating at twice the data rate and phase synchronized to a delayed reference clock. A geometric compensation scheme corrects for timing skew which occurs when clocks and data are distributed to points or small areas from widely dispersed locations, and when clocks and data are distributed from points or small areas to widely dispersed locations. The B-CSM (,) ranks the junctor groups (,) according to signal occupancy and manages signal traffic to efficiently utilize the FICs (,) and to reduce the probability of signal blocking. The junctor groups (,) can include a number of bidirectional junctors. The bidirectional junctors are configured to carry upstream or downstream signals according to current upstream and downstream signal traffic volume.

Broadband switch that manages traffic and method therefor

A method and system for monitoring a first virtual circuit in an asynchronous transmission mode (ATM) network comprises the steps of establishing in the network a second virtual circuit with the same path and QoS parameters as the first virtual circuit, and monitoring the first virtual circuit by determining the QoS parameters of the second virtual circuit. Specifically, a monitoring station determines the QoS parameters of the second virtual circuit by inserting monitoring information in cells transmitted and received on the second virtual circuit. The monitoring station inserts the monitoring information immediately before transmitting each cell and immediately after receiving each cell. Furthermore, the monitoring station compares the QoS parameters of the second virtual circuit with the QoS parameters of the first virtual circuit to determine network alarm information.

Method and system for monitoring broadband quality of services

Management packets are defined that are modified in the payload by each node along a virtual connection and are used to measure both end-to-end QoS and specific individual intermediate node performance parameters. Management packets are implemented by defining entirely new packets or by modifying ATM OAM cells. Switches or routers for use as intermediate nodes are defined that modify the payload of the management packet and locally measure packet delay and packet loss. An intermediate node measures and records the difference between the arrival and departure times of management packets at that switch utilizing delay-stamp fields within the management packets and either the switch internal routing header or timestamp fields within the packet. At the endpoint of the virtual connection, delay-stamp fields in the management packet indicate individual node delays and the cumulative delay. An intermediate node counts the number of packets it discards and records these values in the payload of the management packet individually and cumulatively.

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Acton, MA, United States of America

Stephen S Liu