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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 5. Отображено 5.
10-01-2013 дата публикации

Method, device, and computer program product for detecting and encoding states for accurate measurement

Номер: US20130010608A1
Автор: Alfred C. Morton, Jr., Gomathi Ramachandran, Leonard A. Ciavattone
Принадлежит: AT&T INTELLECTUAL PROPERTY I LP

A method, device, and program for determining states in a flow of packets are provided. A flow of transmitted packets is received. When the difference between the sequence number of the arriving packet and the next expected sequence number is equal to zero and when the TTL number of the arriving packet is equal to the TTL number of the previous packet, there is a stable state beginning with the first of the consecutively received packets. If a difference between the sequence number of an arriving packet and a next expected sequence number is greater than 1, or TTL of the arriving packet is not equal to the TTL number of the previous packet, there is a not stable state. Time between end of one stable state and start of the next stable state is the hole, and the states and holes correlate to events for analysis of the network.

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Номер записи: 1
28-02-2013 дата публикации

METHODS, SYSTEMS, AND COMPUTER PROGRAM PRODUCTS FOR MONITORING NETWORK PERFORMANCE

Номер: US20130051252A1
Автор: Ciavattone Leonard, Halloran William R., JR. Alfred C., Morton, Ramachandran Gomathi
Принадлежит: AT&T Intellectual Property I, L.P.

Network performance management includes identifying a location of a test unit, providing a test protocol to the test unit over a network, and transmitting a stream of data packets to the test unit. The network performance management also includes identifying, via the location of the test unit, a transmission path of network elements through which the stream of packets flows. The network performance management further includes tracking measurements associated with the stream of data packets transmitted to the test unit and return data packets received from the test unit. The measurements are tracked for segments associated with each of the network elements in the transmission path. 1. A method , comprising:identifying, via a host system computer, a location of a test unit in response to a signal received from the test unit;providing, via the host system computer, a test protocol to the test unit over a network, the test protocol specifying directions for handling communications;transmitting a stream of data packets to the test unit;identifying, via the location of the test unit, a transmission path of network elements through which the stream of packets flows; andtracking measurements associated with the stream of data packets transmitted to the test unit and return data packets received from the test unit, the measurements tracked for segments associated with each of the network elements in the transmission path.2. The method of claim 1 , further comprising:segmenting results of the tracking measurements according to corresponding network elements.3. The method of claim 1 , wherein the test unit is configured to communicate over multiple network protocols.4. The method of claim 1 , wherein the test unit is configured to support voice claim 1 , data claim 1 , messaging claim 1 , and location-based services over the network.5. The method of claim 1 , wherein the measurements are tracked while the transmission path is in an idle state claim 1 , the measurements ...

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Номер записи: 2
15-06-2004 дата публикации

Method for monitoring and meeting customer bandwidth demand in operational IP data networks

Номер: US6751664B1
Автор: Gangaji Maguluri, Gomathi Ramachandran, Yaakov Kogan
Принадлежит: AT&T Corp

Monitoring of customer bandwidth demand is accomplished by comparing mean access router uplink utilization to a prescribed threshold value that is computed based upon granular measurements of uplink utilization. This provides an indication of whether customer demand is met with a statistical level of confidence. Further, the actually measured access router uplink utilization can be used to make a predictive assessment of whether to provision a new customer on the access router without adversely affecting existing customers.

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Номер записи: 3
09-10-2012 дата публикации

Method, device, and computer program product for detecting and encoding states for accurate measurement

Номер: US8284778B2
Автор: Alfred C. Morton, Jr., Gomathi Ramachandran, Leonard A. Ciavattone
Принадлежит: AT&T INTELLECTUAL PROPERTY I LP

A method, device, and program for determining states in a flow of packets are provided. A flow of transmitted packets is received. When the difference between the sequence number of the arriving packet and the next expected sequence number is equal to zero and when the TTL number of the arriving packet is equal to the TTL number of the previous packet, there is a stable state beginning with the first of the consecutively received packets. If a difference between the sequence number of an arriving packet and a next expected sequence number is greater than 1, or TTL of the arriving packet is not equal to the TTL number of the previous packet, there is a not stable state. Time between end of one stable state and start of the next stable state is the hole, and the states and holes correlate to events for analysis of the network.

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Номер записи: 4
19-05-2011 дата публикации

Method, device, and computer program product for detecting and encoding states for accurate measurement

Номер: US20110116390A1
Автор: Alfred C. Morton, Jr., Gomathi Ramachandran, Leonard A. Ciavattone
Принадлежит: AT&T INTELLECTUAL PROPERTY I LP

A method, device, and program for determining states in a flow of packets are provided. A flow of transmitted packets is received. When the difference between the sequence number of the arriving packet and the next expected sequence number is equal to zero and when the TTL number of the arriving packet is equal to the TTL number of the previous packet, there is a stable state beginning with the first of the consecutively received packets. If a difference between the sequence number of an arriving packet and a next expected sequence number is greater than 1, or TTL of the arriving packet is not equal to the TTL number of the previous packet, there is a not stable state. Time between end of one stable state and start of the next stable state is the hole, and the states and holes correlate to events for analysis of the network.

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Номер записи: 5