Patents by Inventor Wenjie Zhao

Wenjie Zhao 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).

  • Publication number: 20180227876
    Abstract: Techniques for locating a mobile device using a time distance of arrival (TDOA) method with disturbance scrutiny are provided. In an aspect, for respective combinations of three base station devices of a number of base station devices greater than or equal to three, intersections in hyperbolic curves, generated using a closed form function with input values based on differences of distances from the device to pairs of base station devices of the respective combinations of three base station devices, are determined. The intersection points are then tested for robustness against measurement errors associated with the input values and a subset of the intersection points that are associated with a degree of resistance to the measurement errors are selected to estimate a location of the device.
    Type: Application
    Filed: April 5, 2018
    Publication date: August 9, 2018
    Inventors: Sarat Puthenpura, Jie Chen, Sam Houston Parker, Huahui Wang, Wenjie Zhao
  • Publication number: 20180176329
    Abstract: Concepts and technologies disclosed herein are directed to the optimization of over-the-air (“OTA”) file distribution for connected cars based upon a heuristic scheduling algorithm. A schedule provided by the heuristic scheduling algorithm is designed to distribute OTA data flow to connected cars over the network (geographically) and over a scheduling time horizon (timely), and is capable to reducing the negative impact of OTA file updates on overall wireless network performance. This schedule is created based upon historical statistics associated with connected car driving patterns and simulations of connected car-specific OTA traffic over the network. By leveraging connected cars that connect to different cells at different times based upon driving patterns, the heuristic scheduling algorithm is effective in reducing OTA impact on the network.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Jie Chen, Sichong Guan, Wenjie Zhao, Laurie Bigler
  • Patent number: 9967854
    Abstract: Techniques for locating a mobile device using a time distance of arrival (TDOA) method with disturbance scrutiny are provided. In an aspect, for respective combinations of three base station devices of a number of base station devices greater than or equal to three, intersections in hyperbolic curves, generated using a closed form function with input values based on differences of distances from the device to pairs of base station devices of the respective combinations of three base station devices, are determined. The intersection points are then tested for robustness against measurement errors associated with the input values and a subset of the intersection points that are associated with a degree of resistance to the measurement errors are selected to estimate a location of the device.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: May 8, 2018
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Sarat Puthenpura, Jie Chen, Sam Houston Parker, Huahui Wang, Wenjie Zhao
  • Patent number: 9848337
    Abstract: Dynamic metro cell location planning is provided within the wireless communication coverage area of a macro cell. Metro cell location planning can include obtaining performance parameters associated with the macro cell and evaluating coverage parameters of the macro cell. Metro cell location planning can also include selecting, based on the performance parameters and the coverage parameters, a location within a wireless communication coverage area of the macro cell for placement of the metro cell. The selected location can be conveyed to a user and/or entity for deployment of the metro cells. Metro cells can be used by a carrier to fill a coverage hole and/or to offload capacity hot-spots within the network.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: December 19, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Sarat Puthenpura, Arun Jotshi, Sam Houston Parker, Ravi Raina, Wenjie Zhao
  • Publication number: 20170324623
    Abstract: A network device that determines RACH root sequences for AP devices within a given market. The network device can utilize a specialized graph coloring process or algorithm that has been adapted to, e.g., ensure that no two neighboring AP devices share the same RACH root sequences, provided certain additional constraints not found in graph coloring theory are met. For example, AP devices can have multiple RACH root sequence, whereas in traditional graph coloring problems, each vertex typically has only one color.
    Type: Application
    Filed: May 4, 2016
    Publication date: November 9, 2017
    Inventors: Yuning Yang, Wenjie Zhao
  • Publication number: 20170079005
    Abstract: Techniques for locating a mobile device using a time distance of arrival (TDOA) method with disturbance scrutiny are provided. In an aspect, for respective combinations of three base station devices of a number of base station devices greater than or equal to three, intersections in hyperbolic curves, generated using a closed form function with input values based on differences of distances from the device to pairs of base station devices of the respective combinations of three base station devices, are determined. The intersection points are then tested for robustness against measurement errors associated with the input values and a subset of the intersection points that are associated with a degree of resistance to the measurement errors are selected to estimate a location of the device.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 16, 2017
    Inventors: Sarat Puthenpura, Jie Chen, Sam Houston Parker, Huahui Wang, Wenjie Zhao
  • Patent number: 9538494
    Abstract: Techniques for locating a mobile device using a time distance of arrival (TDOA) method with disturbance scrutiny are provided. In an aspect, for respective combinations of three base station devices of a number of base station devices greater than or equal to three, intersections in hyperbolic curves, generated using a closed form function with input values based on differences of distances from the device to pairs of base station devices of the respective combinations of three base station devices, are determined. The intersection points are then tested for robustness against measurement errors associated with the input values and a subset of the intersection points that are associated with a degree of resistance to the measurement errors are selected to estimate a location of the device.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: January 3, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Sarat Puthenpura, Jie Chen, Sam Houston Parker, Huahui Wang, Wenjie Zhao
  • Publication number: 20160360424
    Abstract: A method and apparatus for providing planning of a plurality of base station controllers in a wireless network are disclosed. For example, the method obtains input data, and determines a limit for at least one base station controller parameter in accordance with the input data. The method determines if the limit for the at least one base station controller parameter is exceeded and determines an optimal output for an objective function, wherein the objective function is based on a plurality of penalty factors, if the limit for the at least one base station controller parameter is exceeded.
    Type: Application
    Filed: July 11, 2016
    Publication date: December 8, 2016
    Inventors: SARAT PUTHENPURA, David G. Belanger, Arun Jotshi, Sam Houston Parker, Wenjie Zhao
  • Patent number: 9392467
    Abstract: A method and apparatus for providing planning of a plurality of base station controllers in a wireless network are disclosed. For example, the method obtains input data, and determines a limit for at least one base station controller parameter in accordance with the input data. The method determines if the limit for the at least one base station controller parameter is exceeded and determines an optimal output for an objective function, wherein the objective function is based on a plurality of penalty factors, if the limit for the at least one base station controller parameter is exceeded.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: July 12, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, David G. Belanger, Arun Jotshi, Sam Houston Parker, Wenjie Zhao
  • Patent number: 9380585
    Abstract: A method and apparatus for selecting a bandwidth option for a cell in a network are disclosed. For example, the method obtains, for the cell, network traffic data for a geographical area, and a physical characteristic of an antenna in the geographical area, determines busy time data traffic from the network traffic data, determines, for the cell, a cell range from the physical characteristic of the antenna, selects a bandwidth option from a plurality of bandwidth options, and determines an average throughput in accordance with the bandwidth option that is selected and the cell range.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: June 28, 2016
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, David G. Belanger, Gopalakrishnan Meempat, Sam Houston Parker, Ravi Raina, Wenjie Zhao, Huahui Wang
  • Patent number: 9191835
    Abstract: A method, computer-readable storage device and an apparatus for planning tracking areas in a wireless network are disclosed. For example, the method represents geographical neighbor relations between each pair of base stations in a first set, and represents in a third set a plurality of potential assignment options for each base station of the first set to tracking areas in a second set, represents the historical data on paging traffic among the base stations in the first set via a first parameter, and represents the historical data on tracking area update traffic among the tracking areas of the second set via a second parameter, and determines for each base station in the first set, the optimal assignment of a tracking area in the second set.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: November 17, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sichong Guan, Farhan Mir, Raghvendra Savoor, Wei Yuan, Wenjie Zhao
  • Publication number: 20150146566
    Abstract: A method, computer-readable storage device and an apparatus for planning tracking areas in a wireless network are disclosed. For example, the method represents geographical neighbor relations between each pair of base stations in a first set, and represents in a third set a plurality of potential assignment options for each base station of the first set to tracking areas in a second set, represents the historical data on paging traffic among the base stations in the first set via a first parameter, and represents the historical data on tracking area update traffic among the tracking areas of the second set via a second parameter, and determines for each base station in the first set, the optimal assignment of a tracking area in the second set.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 28, 2015
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Sichong Guan, Farhan Mir, Raghvendra Savoor, Wei Yuan, Wenjie Zhao
  • Publication number: 20150148059
    Abstract: Techniques for locating a mobile device using a time distance of arrival (TDOA) method with disturbance scrutiny are provided. In an aspect, for respective combinations of three base station devices of a number of base station devices greater than or equal to three, intersections in hyperbolic curves, generated using a closed form function with input values based on differences of distances from the device to pairs of base station devices of the respective combinations of three base station devices, are determined. The intersection points are then tested for robustness against measurement errors associated with the input values and a subset of the intersection points that are associated with a degree of resistance to the measurement errors are selected to estimate a location of the device.
    Type: Application
    Filed: November 26, 2013
    Publication date: May 28, 2015
    Applicant: AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, Jie Chen, Sam Houston Parker, Huahui Wang, Wenjie Zhao
  • Patent number: 8996641
    Abstract: The disclosure provides a method and corresponding system for personalizing and disbursing content material in an automated fashion based on differing characteristics or profiles of the recipients. The system includes a database of potential recipients with key characteristics such as location data, revenue, product ownership, customer status, tenure with the company/organization, payment status, credit rating, whether they have recently responded to other material, and the like. Dissemination media include email communications, collaterals, brochures, textual materials, image and video information, and any similar media, where the contents of the communication material is customized based on the key characteristics profiles of the recipients and driven by a set of business rules that can be adapted to fit various scenarios.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: March 31, 2015
    Assignee: AT&T Intellectual Property II, L.P. via a transfer from AT&T Corp
    Inventors: David G. Belanger, Sam Houston Parker, Sarat Puthenpura, Wenjie Zhao
  • Patent number: 8953488
    Abstract: A method and apparatus for providing a topology for interconnection of telecommunication nodes in a communication network are disclosed. For example, the method obtains input data, and determines values of: at least one set, at least one parameter, and at least one variable associated with the communication network in accordance with the input data. The method then determines the topology for the interconnection via microwave links of the telecommunication nodes from an objective function in accordance with the at least one set, at least one parameter, and at least one variable, wherein the objective function is based on a plurality of penalty factors.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: February 10, 2015
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, Syed Anwar Aftab, Arun Jotshi, Kenneth G. Kristiansen, Jr., Gopalakrishnan Meempat, Wenjie Zhao
  • Patent number: 8937934
    Abstract: Scrambling code conflicts can be mitigated by primary scrambling code reuse that minimizing a potential interference Primary scrambling codes are applied to a first set of cells located in a portion of the network being considered. A second set of cells are evaluated for primary scrambling code reuse based on a distance parameter and/or a coverage area. If the distance parameter is greater than a defined distance, primary scrambling code reuse can be applied. If all distance parameters evaluated are less than the distance parameter, a length of the distance parameter is reduced and the distance between cells is reevaluated.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: January 20, 2015
    Assignees: AT&T Mobility II LLC, AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, Mark Austin, Mark Wade Pack, Sam Houston Parker, Yuning Yang, Wenjie Zhao
  • Publication number: 20140378153
    Abstract: A method and apparatus for selecting a bandwidth option for a cell in a network are disclosed. For example, the method obtains, for the cell, network traffic data for a geographical area, and a physical characteristic of an antenna in the geographical area, determines busy time data traffic from the network traffic data, determines, for the cell, a cell range from the physical characteristic of the antenna, selects a bandwidth option from a plurality of bandwidth options, and determines an average throughput in accordance with the bandwidth option that is selected and the cell range.
    Type: Application
    Filed: June 23, 2014
    Publication date: December 25, 2014
    Inventors: SARAT PUTHENPURA, David G. Belanger, Gopalakrishnan Meempat, Sam Houston Parker, Ravi Raina, Wenjie Zhao, Huahui Wang
  • Patent number: 8913497
    Abstract: A method and apparatus for providing planning of a plurality of serving general packet radio service support nodes in a wireless network are disclosed. For example, the method obtains input data, and determines a limit for at least one serving general packet radio service support node parameter in accordance with the input data. The method determines if the limit for the at least one serving general packet radio service support node parameter is exceeded and determines an optimal output for an objective function, wherein the objective function is based on a plurality of penalty factors, if the limit for the at least one serving general packet radio service support node parameter is exceeded.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: December 16, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, David G. Belanger, Arun Jotshi, Sam Houston Parker, Wenjie Zhao
  • Patent number: 8897795
    Abstract: A method and apparatus for providing planning of a plurality of mobile switching centers in a wireless network are disclosed. For example, the method obtains input data, and determines a limit for at least one mobile switching center parameter in accordance with the input data. The method determines if the limit for the at least one mobile switching center parameter is exceeded and determines an optimal output for an objective function, wherein the objective function is based on a plurality of penalty factors, if the limit for the at least one mobile switching center parameter is exceeded.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 25, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Sarat Puthenpura, David G. Belanger, Abraham George, Sam Houston Parker, Wenjie Zhao
  • Patent number: 8886219
    Abstract: A location of user equipment (UE) in a wireless network is determined. Geometric calculations are leveraged for an overlaid bin grid framework mapping the wireless network area to store differential values for each frame of the bin grid framework for each pair of relevant NodeBs. A timing offset can be determined, such that when a time value from a target UE is accessed, the location can be quickly determined. The target UE time value can be searched for in the pre-computed differential value data set indexed by a relevant NodeB site pair to return a set of frames (forming a hyperbola between the site pair) that can be intersected with a second set of frames for a second NodeB site pair for the same UE. The intersecting frames can represent the location of the UE in the wireless network and timing in the network is correctable based on the data.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: November 11, 2014
    Assignee: AT&T Mobility II LLC
    Inventors: Sheldon Meredith, Mark Austin, Jeremy Fix, Wenjie Zhao, Sarat Puthenpura