Patents by Inventor Lee Breslau
Lee Breslau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220264316Abstract: The technologies described herein are generally directed to launching radio spectrum resources in a fifth generation (5G) network or other next generation networks. For example, a method described herein can include, confirming, by site launching equipment, installation of components of a base station, resulting in a confirmed installation. The method can further comprise, based on the confirmed installation, facilitating, by the site launching equipment, integrating the base station into a communications network. Further, in response to the integrating, launching, by the site launching equipment, operation of the base station for a testing of performance of the base station, the testing resulting in a tested base station. The method can further comprise activating, by the site launching equipment, the tested base station for use by authorized user equipment via the communications network.Type: ApplicationFiled: February 26, 2021Publication date: August 18, 2022Inventors: David Carroll, Shomik Pathak, Karunasish Biswas, Lee Breslau, Christopher Park, Eusebiu Zahan, Giritharan Rana, Ashiwan Sivakumar, James P. Daves, Sarat Puthenpura, Harry Liu
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Patent number: 9893994Abstract: Disclosed example routing methods include accessing a control packet originating from a first internal router, translating the destination address of the control packet from a first value to a second value, and identifying a first one of a plurality of outgoing interfaces of a meta-router based on the second value of the destination address, the outgoing interfaces of the meta-router in communication with respective incoming interfaces of a splitter. Disclosed example methods also include forwarding the control packet to the first one of the outgoing interfaces of the meta-router after translating the destination address of the control packet from the second value back to the first value, and routing the control packet from the splitter to an external router based on which one of the incoming interfaces of the splitter receives the control packet from the meta-router.Type: GrantFiled: November 7, 2016Date of Patent: February 13, 2018Assignee: AT&T Intellectual Property I, L.P.Inventors: Cheng Ee, Lee Breslau, Kadangode K. Ramakrishnan
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Publication number: 20170054638Abstract: Disclosed example routing methods include accessing a control packet originating from a first internal router, translating the destination address of the control packet from a first value to a second value, and identifying a first one of a plurality of outgoing interfaces of a meta-router based on the second value of the destination address, the outgoing interfaces of the meta-router in communication with respective incoming interfaces of a splitter. Disclosed example methods also include forwarding the control packet to the first one of the outgoing interfaces of the meta-router after translating the destination address of the control packet from the second value back to the first value, and routing the control packet from the splitter to an external router based on which one of the incoming interfaces of the splitter receives the control packet from the meta-router.Type: ApplicationFiled: November 7, 2016Publication date: February 23, 2017Inventors: Cheng Ee, Lee Breslau, Kadangode K. Ramakrishnan
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Patent number: 8929221Abstract: A method and system for monitoring data packet traffic in a multicast network comprising determining a first packet count received at a receiver router, representing a quantity of data packets associated with a multicast group and source at a first time, determining a second packet count received at that receiver router representing a quantity of data packets associated with that multicast group and source, at a second time subsequent to the first time, comparing the second packet count to the first packet count, and indicating an alarm in response to the second packet count being less than a predetermined value greater than the first packet count. A status for multiple routers can be obtained, comprising a difference between the quantity of the first and second packet counts; and indicating a warning in response to at least one of the plurality of router status being less than the predetermined value.Type: GrantFiled: October 4, 2012Date of Patent: January 6, 2015Assignee: AT&T Intellectual Property II, L.P.Inventors: Lee Breslau, William Fenner
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Patent number: 8842596Abstract: A system and method for receiving, from one or more ingress routers, a first set of records including data corresponding to network traffic, receiving, from one or more egress routers, a second set of records including data corresponding to network traffic and creating a multicast traffic matrix using at least a portion of the data included in the first and second sets of records.Type: GrantFiled: February 6, 2013Date of Patent: September 23, 2014Assignee: AT&T Intellectual Property, I, L.P.Inventors: Lee Breslau, William Fenner, Alexandre Gerber
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Patent number: 8811395Abstract: A system and method to use network flow records to generate information about changes in network routing and to understand the impact of these changes on network traffic. The inferences made can be determinative, if sufficient information is available. If sufficient information is not available to make determinative inferences, inferences may be made that narrow the range of possible changes that may have occurred to network traffic and the underlying network.Type: GrantFiled: January 14, 2013Date of Patent: August 19, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Alexandre Gerber, Lee Breslau, Subhabrata Sen, Nicholas Duffield, Carsten Lund, Cheng Ee, Amogh Dhamdhere
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Publication number: 20130266023Abstract: A system and method for receiving, from one or more ingress routers, a first set of records including data corresponding to network traffic, receiving, from one or more egress routers, a second set of records including data corresponding to network traffic and creating a multicast traffic matrix using at least a portion of the data included in the first and second sets of records.Type: ApplicationFiled: February 6, 2013Publication date: October 10, 2013Inventors: Lee BRESLAU, William Fenner, Alexandre Gerber
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Patent number: 8477772Abstract: A system and method to use network flow records to generate information about changes in network routing and to understand the impact of these changes on network traffic. The inferences made can be determinative, if sufficient information is available. If sufficient information is not available to make determinative inferences, inferences may be made that narrow the range of possible changes that may have occurred to network traffic and the underlying network.Type: GrantFiled: December 16, 2008Date of Patent: July 2, 2013Assignee: AT&T Intellectual Property I, L.P.Inventors: Alexandre Gerber, Lee Breslau, Subhabrata Sen, Nicholas Duffield, Carsten Lund, Cheng Ee, Amogh Dhamdhere
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Patent number: 8374103Abstract: A system and method for receiving, from one or more ingress routers, a first set of records including data corresponding to network traffic, receiving, from one or more egress routers, a second set of records including data corresponding to network traffic and creating a multicast traffic matrix using at least a portion of the data included in the first and second sets of records.Type: GrantFiled: July 30, 2010Date of Patent: February 12, 2013Assignee: AT & T Intellectual Property I, LPInventors: Lee Breslau, William Fenner, Alexandre Gerber
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Patent number: 8306043Abstract: A method and system for monitoring data packet traffic in a multicast network comprising determining a first packet count received at a receiver router, representing a quantity of data packets associated with a multicast group and source at a first time, determining a second packet count received at that receiver router representing a quantity of data packets associated with that multicast group and source, at a second time subsequent to the first time, comparing the second packet count to the first packet count, and indicating an alarm in response to the second packet count being less than a predetermined value greater than the first packet count. A status for multiple routers can be obtained, comprising a difference between the quantity of the first and second packet counts; and indicating a warning in response to at least one of the plurality of router status being less than the predetermined value.Type: GrantFiled: May 21, 2010Date of Patent: November 6, 2012Assignee: AT&T Intellectual Property II, L.P.Inventors: Lee Breslau, William Fenner
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Indirect measurement methodology to infer routing changes using statistics of flow arrival processes
Patent number: 8165019Abstract: Statistical methods are used to observe packet flow arrival processes and to infer routing changes from those observations. Packet flow arrivals are monitored using NetFlow or another packet flow monitoring arrangement. Packet flow arrivals are quantified by counting arrivals per unit time, or by measuring an inter-arrival time between flows. When a change in packet flow arrivals is determined to be statistically significant, a change in network routing protocol is reported.Type: GrantFiled: July 14, 2009Date of Patent: April 24, 2012Assignee: AT&T Intellectual Property I, L.P.Inventors: Lee Breslau, Amogh Dhamdhere, Nicholas Duffield, Cheng Ee, Alexandre Gerber, Carsten Lund, Subhabrata Sen -
Patent number: 8005010Abstract: A method and apparatus for providing performance measurements on network tunnels in packet networks are disclosed. For example, the method establishes two tunnels between a first measurement host and a first router, and establishes a tunnel between the first router and a second measurement host. The method also establishes a multicast group having a plurality of members, and sends one or more packets addressed to the multicast group from the first measurement host. The method measures the frequencies of directly and/or indirectly received responses from the plurality of members of the multicast group, and provides a plurality of estimated values for a plurality of packet transmission rates from measurement of the frequencies for one or more of said tunnels.Type: GrantFiled: January 30, 2008Date of Patent: August 23, 2011Assignee: AT&T Intellectual Property I, L.P.Inventors: Lee Breslau, Nicholas Duffield, Yu Gu, Subhabrata Sen
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Patent number: 7953020Abstract: A method is disclosed for implementing and reporting network measurements between a source of probe packets and an element, such as a router. The invention exploits commonly implemented features on commercial elements. By exploiting these features, the expense of deploying special purpose measurement devices can be avoided. In one aspect of the invention, a plurality of probe packets is transmitted in a packet network with each of the probe packets having the same key and the same aggregation characteristic. A report is then received from an instructionless element regarding the plurality of probe packets, thereby enabling measurement of a parameter of the packet network.Type: GrantFiled: June 30, 2006Date of Patent: May 31, 2011Assignee: AT&T Intellectual Property II, L.P.Inventors: Lee Breslau, Nicholas G. Duffield, Subhabrata Sen
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Patent number: 7924739Abstract: A packet loss estimation technique is disclosed that utilizes the sampled flow level statistics that are routinely collected in operational networks, thereby obviating the need for any new router features or measurement infrastructure. The technique is specifically designed to handle the challenges of sampled flow-level aggregation such as information loss resulting from packet sampling, and generally comprises: receiving a first record of sampled packets for a flow from a first network element; receiving a second record of sampled packets for the flow from a second network element communicating with the first network element; correlating sampled packets from the flow at the first network element and the second network element to a measurement interval; and estimating the packet loss using a count of the sampled packets correlated to the measurement interval.Type: GrantFiled: December 22, 2008Date of Patent: April 12, 2011Assignee: AT&T Intellectual Property I, L.P.Inventors: Subhabrata Sen, Lee Breslau, Nicholas Duffield, Yu Gu
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Indirect measurement methodology to infer routing changes using statistics of flow arrival processes
Publication number: 20110013525Abstract: Statistical methods are used to observe packet flow arrival processes and to infer routing changes from those observations. Packet flow arrivals are monitored using NetFlow or another packet flow monitoring arrangement. Packet flow arrivals are quantified by counting arrivals per unit time, or by measuring an inter-arrival time between flows. When a change in packet flow arrivals is determined to be statistically significant, a change in network routing protocol is reported.Type: ApplicationFiled: July 14, 2009Publication date: January 20, 2011Inventors: Lee Breslau, Amogh Dhamdhere, Nicholas Duffield, Cheng Ee, Alexandre Gerber, Carsten Lund, Subhabrata Sen -
Publication number: 20100296430Abstract: A system and method for receiving, from one or more ingress routers, a first set of records including data corresponding to network traffic, receiving, from one or more egress routers, a second set of records including data corresponding to network traffic and creating a multicast traffic matrix using at least a portion of the data included in the first and second sets of records.Type: ApplicationFiled: July 30, 2010Publication date: November 25, 2010Inventors: Lee BRESLAU, William Fenner, Alexandre Gerber
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Publication number: 20100226277Abstract: A method and system for monitoring data packet traffic in a multicast network comprising determining a first packet count received at a receiver router, representing a quantity of data packets associated with a multicast group and source at a first time, determining a second packet count received at that receiver router representing a quantity of data packets associated with that multicast group and source, at a second time subsequent to the first time, comparing the second packet count to the first packet count, and indicating an alarm in response to the second packet count being less than a predetermined value greater than the first packet count. A status for multiple routers can be obtained, comprising a difference between the quantity of the first and second packet counts; and indicating a warning in response to at least one of the plurality of router status being less than the predetermined value.Type: ApplicationFiled: May 21, 2010Publication date: September 9, 2010Applicant: AT&T CORP.Inventors: Lee Breslau, William Fenner
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Patent number: 7792057Abstract: A system and method for receiving, from one or more ingress routers, a first set of records including data corresponding to network traffic, receiving, from one or more egress routers, a second set of records including data corresponding to network traffic and creating a multicast traffic matrix using at least a portion of the data included in the first and second sets of records.Type: GrantFiled: December 21, 2007Date of Patent: September 7, 2010Assignee: AT&T Labs, Inc.Inventors: Lee Breslau, William Fenner, Alexandre Gerber
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Publication number: 20100157840Abstract: A packet loss estimation technique is disclosed that utilizes the sampled flow level statistics that are routinely collected in operational networks, thereby obviating the need for any new router features or measurement infrastructure. The technique is specifically designed to handle the challenges of sampled flow-level aggregation such as information loss resulting from packet sampling, and generally comprises: receiving a first record of sampled packets for a flow from a first network element; receiving a second record of sampled packets for the flow from a second network element communicating with the first network element; correlating sampled packets from the flow at the first network element and the second network element to a measurement interval; and estimating the packet loss using a count of the sampled packets correlated to the measurement interval.Type: ApplicationFiled: December 22, 2008Publication date: June 24, 2010Inventors: Subhabrata Sen, Lee Breslau, Nicholas Duffield, Yu Gu
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Publication number: 20100150005Abstract: A system and method to use network flow records to generate information about changes in network routing and to understand the impact of these changes on network traffic. The inferences made can be determinative, if sufficient information is available. If sufficient information is not available to make determinative inferences, inferences may be made that narrow the range of possible changes that may have occurred to network traffic and the underlying network.Type: ApplicationFiled: December 16, 2008Publication date: June 17, 2010Applicant: AT&T MOBILITY II LLCInventors: Alexandre Gerber, Lee Breslau, Subhabrata Sen, Nicholas Duffield, Carsten Lund, Cheng Ee, Amogh Dhamdhere