Patents by Inventor Guangzhi Li
Guangzhi Li 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: 20160315876Abstract: Aspects of the subject disclosure may include, for example, a broadcast services platform includes a memory that stores operational instructions. A processor executes the operational instructions to: receive user data, the user data including a list of users and performance metric data corresponding to individual ones of the users; sort the list of the users in order of the performance metric data to generate a sorted list of the users; partition the sorted list of the users to generate a plurality of user groups; and generate network resource allocation data that allocates network resources to provide broadcast services to the users. Other embodiments are disclosed.Type: ApplicationFiled: April 24, 2015Publication date: October 27, 2016Applicant: AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Rakesh Sinha, Jeffrey Erman, Guangzhi Li, Jiasi Chen, Kadangode K. Ramakrishnan
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Patent number: 9264344Abstract: A method and apparatus for providing a route recommendation are disclosed. For example, the method obtains network topology information, wherein the network topology information comprises a plurality of underlying subnetwork types for a network. The method creates a cost model for the network, and receives a request from a user for a connection to be supported by the network. The method provides the route recommendation for supporting the connection by applying the cost model.Type: GrantFiled: March 23, 2015Date of Patent: February 16, 2016Assignee: AT&T Intellectual Property I, L.P.Inventors: Guangzhi Li, Angela Lan Chiu, Chris Dailey, Robert Duncan Doverspike, Monica Naukam Gerhardstein, Dah-Min David Hwang, Dongmei Wang, Dahai Xu
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Publication number: 20150195186Abstract: A method and apparatus for providing a route recommendation are disclosed. For example, the method obtains network topology information, wherein the network topology information comprises a plurality of underlying subnetwork types for a network. The method creates a cost model for the network, and receives a request from a user for a connection to be supported by the network. The method provides the route recommendation for supporting the connection by applying the cost model.Type: ApplicationFiled: March 23, 2015Publication date: July 9, 2015Inventors: GUANGZHI LI, Angela Lan Chiu, Chris Dailey, Robert Duncan Doverspike, Monica Naukam Gerhardstein, Dah-Min David Hwang, Dongmei Wang, Dahai Xu
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Patent number: 8989018Abstract: A method and apparatus for providing a route recommendation are disclosed. For example, the method obtains network topology information, wherein the network topology information comprises a plurality of underlying subnetwork types for a network. The method creates a cost model for the network, and receives a request from a user for a connection to be supported by the network. The method provides the route recommendation for supporting the connection by applying the cost model.Type: GrantFiled: October 11, 2010Date of Patent: March 24, 2015Assignee: AT&T Intellectual Property I, L.P.Inventors: Guangzhi Li, Angela Lan Chiu, Chris Dailey, Robert Duncan Doverspike, Monica Naukam Gerhardstein, Dah-Min David Hwang, Dongmei Wang, Dahai Xu
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Patent number: 8897641Abstract: A method of providing routes through heterogeneous subsystems in an optical network is disclosed, which includes generating, using a processing device, a reachability matrix based on subnetwork information; and generating, using the processing device, a topology associated with the optical network using the reachability matrix. The method also includes determining, using the processing device, a shortest path through the optical network using the reachability matrix and a cost model graph; and displaying, using a graphical user interface, subsystems associated with the shortest path, regeneration locations associated with the shortest path, wavelengths associated with the shortest path, the topology, and the shortest path. Corresponding apparatus and computer-readable storage media are also disclosed.Type: GrantFiled: April 22, 2013Date of Patent: November 25, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Robert Doverspike, Guangzhi Li, Angela Lan Chiu, Monica Gerhardstein, Yici Guo, Dongmei Wang, Dahai Xu
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Patent number: 8824461Abstract: Method and apparatus for providing a control plane across multiple optical network domains is described. In one example, topology and resource discovery is employed in a transport network having a plurality of control domains. Topology information for each of the control domains is summarized to produce summarized topology information. The summarized topology information for each of the control domains is exchanged among the control domains. At each of the control domains, the summarized topology information of each of the control domains is combined to produce combined topology information. The combined topology information is passed among network elements within each of the control domains using an intra-domain routing protocol.Type: GrantFiled: June 17, 2013Date of Patent: September 2, 2014Assignee: AT&T Intellectual Property II, L.P.Inventors: Robert Doverspike, Albert G. Greenberg, Guangzhi Li, Dongmei Wang, Jennifer Yates, Joel M. Gottlieb, Charles Robert Kalmanek, Panagiotis Sebos
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Patent number: 8780697Abstract: Certain exemplary embodiments provide a method comprising: in a network at a node located on a label switched path: selecting a backup path to respond to a failure; and for each link along the backup path, reserving a backup bandwidth, wherein the backup bandwidth is sufficient to reroute traffic around the failure.Type: GrantFiled: February 12, 2013Date of Patent: July 15, 2014Assignee: AT&T Intellectual Property II, L.P.Inventors: Guangzhi Li, Dongmei Wang
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Publication number: 20140185430Abstract: Disclosed herein are systems, methods, and computer readable media for modifying IP backbone link weights such that multicast traffic and unicast traffic will not travel on a same path between nodes. The method comprises assigning link weights to nodes within an IP backbone such that multicast forwarding paths and unicast forwarding paths are failure disjoint, and delivering undelivered multicast packets using IP unicast encapsulation to the loopback address of next hop router on a multicast tree upon link/interface failure.Type: ApplicationFiled: March 4, 2014Publication date: July 3, 2014Applicant: AT&T Intellectual Property I, L.P.Inventors: Guangzhi LI, Dongmei WANG
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Patent number: 8750161Abstract: In a tool for use by network planners in designing metropolitan IP aggregation networks, several optimization methods are integrated into a tool. A k-means algorithm is used to choose access packet switch locations. A dual-k-means algorithm is used to choose the backbone switch locations. Each access packet switch is dual homed to two backbone packet switches using two diverse paths. The diverse path configuration is found using a maxflow-mincost algorithm on a modified fiber map topology. The link topology connecting the backbone packet switches to each other is designed using a heuristic that creates a skeleton network topology and then adds express links one by one, testing each link to assure reduced overall network cost. The resulting network topology is then improved upon by local search.Type: GrantFiled: December 20, 2010Date of Patent: June 10, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: David Matthews, Promod Kumar Bhagat, Robert Duncan Doverspike, John Gregory Klincewicz, Jian Li, Guangzhi Li, David Frederick Lynch, Moshe Segal, Dongmei Wang
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Patent number: 8687956Abstract: Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks.Type: GrantFiled: July 26, 2012Date of Patent: April 1, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Guangzhi Li, Angela Lan Chiu, Robert Duncan Doverspike, John L. Strand
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Patent number: 8665698Abstract: Disclosed herein are systems, methods, and computer readable media for modifying IP backbone link weights such that multicast traffic and unicast traffic will not travel on a same path between nodes. The method comprises assigning link weights to nodes within an IP backbone such that multicast forwarding paths and unicast forwarding paths are failure disjoint, and delivering undelivered multicast packets using IP unicast encapsulation to the loopback address of next hop router on a multicast tree upon link/interface failure.Type: GrantFiled: October 22, 2010Date of Patent: March 4, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: Guangzhi Li, Dongmei Wang
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Publication number: 20130279899Abstract: Method and apparatus for providing a control plane across multiple optical network domains is described. In one example, topology and resource discovery is employed in a transport network having a plurality of control domains. Topology information for each of the control domains is summarized to produce summarized topology information. The summarized topology information for each of the control domains is exchanged among the control domains. At each of the control domains, the summarized topology information of each of the control domains is combined to produce combined topology information. The combined topology information is passed among network elements within each of the control domains using an intra-domain routing protocol.Type: ApplicationFiled: June 17, 2013Publication date: October 24, 2013Inventors: ROBERT DOVERSPIKE, Albert G. Greenberg, Guangzhi Li, Dongmei Wang, Jennifer Yates, Joel M. Gottlieb, Charles Robert Kalmanek, Panagiotis Sebos
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Publication number: 20130238582Abstract: A method for operating a file system and a communication device are disclosed. The method comprises: receiving a file operation request from a user, and according to the file operation request, transmitting a file operation instruction to a hardware acceleration unit, such that the hardware acceleration unit operates a data file in a storage device in accordance with the file operation instruction and returns the operated data to a user directly without via a central processing unit (CPU) so as to realize the communication between the user and the data file in the storage device. The operation on the data file is completed by the hardware acceleration unit and the operated data is returned to the user directly without via CPU. The performance of the hardware acceleration unit can be sufficiently used and the data transmission with high bandwidth can be realized.Type: ApplicationFiled: April 25, 2013Publication date: September 12, 2013Applicant: Huawei Technologies Co., Ltd.Inventors: Guangzhi LI, Haichun FU
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Publication number: 20130236176Abstract: A method of providing routes through heterogeneous subsystems in an optical network is disclosed, which includes generating, using a processing device, a reachability matrix based on subnetwork information; and generating, using the processing device, a topology associated with the optical network using the reachability matrix. The method also includes determining, using the processing device, a shortest path through the optical network using the reachability matrix and a cost model graph; and displaying, using a graphical user interface, subsystems associated with the shortest path, regeneration locations associated with the shortest path, wavelengths associated with the shortest path, the topology, and the shortest path. Corresponding apparatus and computer-readable storage media are also disclosed.Type: ApplicationFiled: April 22, 2013Publication date: September 12, 2013Applicant: AT&T Intellectual Property I, LPInventors: Robert Doverspike, Guangzhi Li, Angela Lan Chiu, Monica Gerhardstein, Yici Guo, Dongmei Wang, Dahai Xu
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Patent number: 8515280Abstract: Systems and methods are described that provide a two-step, physically-diverse optical routing. A diverse routing is formulated using Integer Linear Programming (ILP) to find feasible routes having a minimum estimated cost, and post-processing the feasible routes on an auxiliary cost graph to optimize regenerator and terminal Optical Transponder (OT) placement and wavelength assignment.Type: GrantFiled: December 13, 2010Date of Patent: August 20, 2013Assignee: AT&T Intellectual Property I, L.P.Inventors: Guangzhi Li, Angela Lan Chiu, Chris Dailey, Robert Duncan Doverspike, Monica Naukam Gerhardstein, Dongmei Wang, Dahai Xu
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Patent number: 8467382Abstract: Method and apparatus for providing a control plane across multiple optical network domains is described. In one example, topology and resource discovery is employed in a transport network having a plurality of control domains. Topology information for each of the control domains is summarized to produce summarized topology information. The summarized topology information for each of the control domains is exchanged among the control domains. At each of the control domains, the summarized topology information of each of the control domains is combined to produce combined topology information. The combined topology information is passed among network elements within each of the control domains using an intra-domain routing protocol.Type: GrantFiled: December 22, 2005Date of Patent: June 18, 2013Assignee: AT&T Intellectual Property II, L.P.Inventors: Robert Doverspike, Albert Greenberg, Guangzhi Li, Dongmei Wang, Jennifer Yates, Joel M. Gottleib, Charles Robert Kalmanek, Panagiotis Sebos
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Patent number: 8452176Abstract: A method of providing routes through heterogeneous subsystems in an optical network is disclosed, which includes generating, using a processing device, a reachability matrix based on subnetwork information; and generating, using the processing device, a topology associated with the optical network using the reachability matrix. The method also includes determining, using the processing device, a shortest path through the optical network using the reachability matrix and a cost model graph; and displaying, using a graphical user interface, subsystems associated with the shortest path, regeneration locations associated with the shortest path, wavelengths associated with the shortest path, the topology, and the shortest path. Corresponding apparatus and computer-readable storage media are also disclosed.Type: GrantFiled: February 18, 2011Date of Patent: May 28, 2013Assignee: AT&T Intellectual Property I, LPInventors: Robert Doverspike, Guangzhi Li, Angela Lan Chiu, Monica Gerhardstein, Yici Guo, Dongmei Wang, Dahai Xu
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Patent number: 8374077Abstract: Certain exemplary embodiments provide a method comprising: in a network at a node located on a label switched path: selecting a backup path to respond to a failure; and for each link along the backup path, reserving a backup bandwidth, wherein the backup bandwidth is sufficient to reroute traffic around the failure.Type: GrantFiled: June 7, 2012Date of Patent: February 12, 2013Assignee: AT&T Intellectual Property II, L.P.Inventors: Guangzhi Li, Dongmei Wang
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Publication number: 20120308224Abstract: Systems and methods are described that provide a distributed restoration signaling protocol for shared mesh restoration with standbys for transparent optical networks.Type: ApplicationFiled: July 26, 2012Publication date: December 6, 2012Inventors: Guangzhi Li, Angela Lan Chiu, Robert Duncan Doverspike, John L. Strand
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Publication number: 20120243407Abstract: Certain exemplary embodiments provide a method comprising: in a network at a node located on a label switched path: selecting a backup path to respond to a failure; and for each link along the backup path, reserving a backup bandwidth, wherein the backup bandwidth is sufficient to reroute traffic around the failure.Type: ApplicationFiled: June 7, 2012Publication date: September 27, 2012Applicant: AT&T INTELLECTUAL PROPERTY II, LPInventors: Guangzhi Li, Dongmei Wang