Patents by Inventor Wei-Ming Lan

Wei-Ming Lan 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).

  • Patent number: 11940547
    Abstract: Systems and methods are provided for determining the quality of a civic address produced by a reverse geocoder, utilizing the uncertainty of a geodetic location and a distance between the geodetic location and a geocoded location (i.e., a civic address) determined by the reverse geocoder. Upon receiving a request by a PSAP for a civic address corresponding to a UE initiating a call for emergency services, a node initially identifies a geodetic location of the UE and an uncertainty of the geodetic location. The node initiates an API call to a reverse geocoder API. The node receives a geocoded location corresponding to the geodetic location and compares the geocoded location to the geodetic location to determine a distance between them. Based on the uncertainty of the geodetic location and the distance between the geodetic location and the geocoded location, a quality of the civic address is determined.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: March 26, 2024
    Assignee: T-MOBILE INNOVATIONS LLC
    Inventor: Wei-Ming Lan
  • Patent number: 11924713
    Abstract: Systems and methods for providing timely location estimates when a user equipment initiates a call to an emergency number are disclosed. The system enables a user equipment to send the earliest available location that the user equipment can come up with, after detecting an emergency message (e.g., detecting a 911 digit string). This can be done by sending the current location of the user equipment via HTTPS protocol to a telecommunications service provider node (e.g., an end point in GMLC). In this manner, the system avoids a major overhaul of the existing 3GPP E911 location standard while allowing timely compliance of the NG911 mandate.
    Type: Grant
    Filed: February 9, 2023
    Date of Patent: March 5, 2024
    Assignee: T-Mobile USA, Inc.
    Inventor: Wei-Ming Lan
  • Patent number: 11917490
    Abstract: Systems, methods, and computer-readable media herein generate an E911 location report based on an uncertainty associated with a device-based hybrid (DBH) location received from a UE device. The uncertainty may be compared to an uncertainty threshold value to determine which values to include in a location report sent to a PSAP. A civic address associated with a UE device may be included in a location report where the uncertainty is sufficiently low, thus a location report can be sent to a PSAP with the most relevant and accurate information so that first responders can more effectively locate a distressed caller.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: February 27, 2024
    Assignee: T-Mobile Innovations LLC
    Inventors: Nan Xiao, Wei-Ming Lan
  • Patent number: 11877271
    Abstract: A network base station can select, for each of one or more attached terminals, a respective downlink transmission mode (DTM) based at least in part on respective channel condition information (CCI). The base station can determine a subframe allocation of DTMs to subframes of a radio frame, and transmit downlink data to terminals based the subframe allocation. Additionally or alternatively, the base station can receive load information from a second base station associated with a different access network and determine the subframe allocation based on the load information. The subframe allocation can associate a specific access network with each subframe. Additionally or alternatively, the base station can send the subframe allocation to the second base station. Additionally or alternatively, the base station can determine a proportion of GBR traffic of a particular DTM, determine a reference-signal transmission rate associated with that DTM, and transmit reference signals accordingly.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: January 16, 2024
    Assignee: T-Mobile USA, Inc.
    Inventors: Wafik Abdel Shahid, Ming Shan Kwok, Yasmin Karimli, Wei-Ming Lan, Thomas P. Lucht
  • Patent number: 11877221
    Abstract: Systems, methods, and computer-readable media herein generate an E911 location report based on an altitude or an altitude uncertainty associated with an estimated location received from a UE device. The altitude and altitude uncertainty may be compared to determined thresholds to determine which portions of the estimated location to include in an E911 location report sent to a PSAP. A location report generated to include the location information that is based on evaluating the altitude and altitude uncertainty can be sent to a PSAP, thus providing the most relevant and accurate information so that first responders can more effectively locate a distressed caller.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: January 16, 2024
    Assignee: T-Mobile Innovations LLC
    Inventors: Wei-Ming Lan, Nan Xiao
  • Publication number: 20230258762
    Abstract: Systems and methods are provided for determining the quality of a civic address produced by a reverse geocoder, utilizing the uncertainty of a geodetic location and a distance between the geodetic location and a geocoded location (i.e., a civic address) determined by the reverse geocoder. Upon receiving a request by a PSAP for a civic address corresponding to a UE initiating a call for emergency services, a node initially identifies a geodetic location of the UE and an uncertainty of the geodetic location. The node initiates an API call to a reverse geocoder API. The node receives a geocoded location corresponding to the geodetic location and compares the geocoded location to the geodetic location to determine a distance between them. Based on the uncertainty of the geodetic location and the distance between the geodetic location and the geocoded location, a quality of the civic address is determined.
    Type: Application
    Filed: April 24, 2023
    Publication date: August 17, 2023
    Inventor: Wei-Ming LAN
  • Publication number: 20230188944
    Abstract: Systems and methods for providing timely location estimates when a user equipment initiates a call to an emergency number are disclosed. The system enables a user equipment to send the earliest available location that the user equipment can come up with, after detecting an emergency message (e.g., detecting a 911 digit string). This can be done by sending the current location of the user equipment via HTTPS protocol to a telecommunications service provider node (e.g., an end point in GMLC). In this manner, the system avoids a major overhaul of the existing 3GPP E911 location standard while allowing timely compliance of the NG911 mandate.
    Type: Application
    Filed: February 9, 2023
    Publication date: June 15, 2023
    Inventor: Wei-Ming Lan
  • Patent number: 11675041
    Abstract: An unmanned aerial vehicle (UAV) for detecting, identifying, and locating a source emitting an interfering signal is described herein. The UAV can detect wireless network site interference within a given frequency spectrum band and locate the source of the interference based on one or more signals received by one or more antennas, such as directional antennas. The one or more antennas are located on or within a main body or one or more booms of the UAV. The UAV can be flown manually (e.g., by an operator) or automatically (e.g., by a processor or preset routine).
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: June 13, 2023
    Assignee: T-MOBILE USA, INC.
    Inventor: Wei-Ming Lan
  • Publication number: 20230176173
    Abstract: Systems and methods for determining a location of a mobile computing device requesting emergency services are provided. A mobile computing device may receive an indication of a request for emergency services from a user of the mobile computing device. The mobile computing device may receive a first wireless signal from a first device. The wireless signal may include an indication of a first geographic position associated with the first device. The mobile computing device may determine a location associated with the mobile computing device based on the indication of the first geographic position associated with the first device, and may send the determined location to a provider of emergency services.
    Type: Application
    Filed: February 2, 2023
    Publication date: June 8, 2023
    Inventor: Wei-Ming Lan
  • Patent number: 11668784
    Abstract: Systems and methods are provided for determining the quality of a civic address produced by a reverse geocoder, utilizing the uncertainty of a geodetic location and a distance between the geodetic location and a geocoded location (i.e., a civic address) determined by the reverse geocoder. Upon receiving a request by a PSAP for a civic address corresponding to a UE initiating a call for emergency services, a node initially identifies a geodetic location of the UE and an uncertainty of the geodetic location. The node initiates an API call to a reverse geocoder API. The node receives a geocoded location corresponding to the geodetic location and compares the geocoded location to the geodetic location to determine a distance between them. Based on the uncertainty of the geodetic location and the distance between the geodetic location and the geocoded location, a quality of the civic address is determined.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: June 6, 2023
    Assignee: T-Mobile Innovations LLC
    Inventor: Wei-Ming Lan
  • Patent number: 11671814
    Abstract: In various examples, upon successful transmission of a device-based hybrid (DBH) location from a UE to a cellular network upon that UE placing an Enhanced 911 (E911) call, a horizontal uncertainty associated with the DBH location is taken into account. If that uncertainty reaches a threshold value, alternative location information in the form of one or more of a Cell Identity (CID) or an Enhanced Cell Identity (E-CID) associated with the UE can be used in generating a location report that is then sent to a Public Safety Answering Point. As a result, first responders may be able to more quickly locate distressed E911 callers.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: June 6, 2023
    Assignee: T-Mobile Innovations LLC
    Inventors: Nan Xiao, Muhammad Arshad Khadim, Kiong Chong, Wei-Ming Lan
  • Publication number: 20230144228
    Abstract: Systems and methods are provided for determining the quality of a civic address produced by a reverse geocoder, utilizing the uncertainty of a geodetic location and a distance between the geodetic location and a geocoded location (i.e., a civic address) determined by the reverse geocoder. Upon receiving a request by a PSAP for a civic address corresponding to a UE initiating a call for emergency services, a node initially identifies a geodetic location of the UE and an uncertainty of the geodetic location. The node initiates an API call to a reverse geocoder API. The node receives a geocoded location corresponding to the geodetic location and compares the geocoded location to the geodetic location to determine a distance between them. Based on the uncertainty of the geodetic location and the distance between the geodetic location and the geocoded location, a quality of the civic address is determined.
    Type: Application
    Filed: November 5, 2021
    Publication date: May 11, 2023
    Inventor: Wei-Ming Lan
  • Patent number: 11617059
    Abstract: Systems and methods for providing timely location estimates when a user equipment initiates a call to an emergency number are disclosed. The system enables a user equipment and network nodes (e.g., eSMLC/LMF) to send multiple location responses instead of just one so that the PSAP can benefit from accurate location techniques in a timely manner. For example, when a user equipment is located in an outdoor environment, it can immediately send its A-GNSS location after meeting quality-of-service (QoS) criteria, and the eSMLC/LMF can forward the location estimate to the PSAP immediately without first waiting for all of the other location estimates. When location estimates become available from other technologies (e.g., E-CID, or DBH, or both), the eSMLC/LMF can send to the PSAP another location response for that technology. As a result, the PSAP can always have the most accurate and up-to-date location information available to timely and accurately respond to emergency calls.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: March 28, 2023
    Assignee: T-Mobile USA, Inc.
    Inventor: Wei-Ming Lan
  • Patent number: 11598837
    Abstract: Systems and methods for determining a location of a mobile computing device requesting emergency services are provided. A mobile computing device may receive an indication of a request for emergency services from a user of the mobile computing device. The mobile computing device may receive a first wireless signal from a first device. The wireless signal may include an indication of a first geographic position associated with the first device. The mobile computing device may determine a location associated with the mobile computing device based on the indication of the first geographic position associated with the first device, and may send the determined location to a provider of emergency services.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: March 7, 2023
    Assignee: T-MOBILE USA, INC.
    Inventor: Wei-Ming Lan
  • Patent number: 11589188
    Abstract: Systems and methods for providing timely location estimates when a user equipment initiates a call to an emergency number are disclosed. The system enables a user equipment to send the earliest available location that the user equipment can come up with, after detecting an emergency message (e.g., detecting a 911 digit string). This can be done by sending the current location of the user equipment via HTTPS protocol to a telecommunications service provider node (e.g., an end point in GMLC). In this manner, the system avoids a major overhaul of the existing 3GPP E911 location standard while allowing timely compliance of the NG911 mandate.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: February 21, 2023
    Assignee: T-Mobile USA, Inc.
    Inventor: Wei-Ming Lan
  • Patent number: 11576025
    Abstract: A solution for providing user equipment (UE) location during an emergency call (e.g., an E911 call) includes: receiving, at a positioning node (e.g., a gateway mobile location center (GMLC)), a notification of an emergency call; requesting, by the positioning node, an approximated location of the UE; requesting, from the UE, a refined location of the UE, wherein the refined location has a higher expected accuracy than the approximated location; receiving the approximated location; based on at least the approximated location, selecting an emergency service responder point (e.g., a public safety answering point (PSAP)) from among a plurality of emergency service responder points; instructing a call routing destination of the emergency call as the selected emergency service responder point; receiving the refined location; and transmitting the refined location to the selected emergency service responder point.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: February 7, 2023
    Assignee: T-Mobile USA, Inc.
    Inventor: Wei-Ming Lan
  • Patent number: 11558727
    Abstract: Systems and methods of testing the handling of, or response to, transmitted Wireless Emergency Alerts (WEA) that include a geofenced area. The testing can include providing first location Global Positioning System (GPS) signals to user equipment, causing the user equipment to determine it is geographically located at the first location. A WEA alert can be provided to the user equipment and the WEA can include a geofenced area that does not include the first location. The user equipment can be provided GPS signals corresponding to a second location that is within the geofenced area of the WEA. Verification can then be performed to check that the user equipment displays the WEA alert, or message, in response to the user equipment determining its geographical position as corresponding to the second location that is within the geofenced area.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: January 17, 2023
    Assignee: T-MOBILE USA, INC.
    Inventor: Wei-Ming Lan
  • Patent number: 11503658
    Abstract: The disclosed technology provides a system and method for scheduling downlink transmissions and for granting uplink frequency resources to a user device such that concurrent transmissions and receptions by the user device, or multiple concurrent transmissions and receptions by the user device, does not lead to deleterious intermodulation distortion or at least minimizes the extent of any such resulting intermodulation distortion.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: November 15, 2022
    Assignee: T-Mobile USA, Inc.
    Inventors: Ming Shan Kwok, Thomas Lucht, Wafik Abdel Shahid, Yasmin Karimli, Wei-Ming Lan
  • Patent number: 11399271
    Abstract: A system for appending an emergency call (e.g., E911) with a location is described herein. The system appends the emergency call to a public safety answering point (PSAP) with a location, including an amended or up-to-the-minute location, from which the emergency call occurred. A user equipment, which places the emergency call, includes cache memory. The location is stored in or retained in the cache memory. The UE, upon recognizing the “911” string for the emergency call, retrieves the location from the UE and appends the call with the location. A location module is used to determine the location of UE. A movement module determines UE movement, including direction, speed, acceleration, and the like. The location of the UE can be amended based on the movement of the UE.
    Type: Grant
    Filed: June 1, 2020
    Date of Patent: July 26, 2022
    Assignee: T-MOBILE USA, INC.
    Inventor: Wei-Ming Lan
  • Patent number: 11356812
    Abstract: Systems and methods of providing a location that include receiving location data from user equipment, such as a cellphone or mobile device, and providing the location data in an acceptable form to emergency services, such as a Public Safety Answering Point (PSAP). The location data from the user equipment can undergo a shape conversion process prior to being transmitted to emergency services. The systems and methods evaluate the received location data to determine if a semimajor and a semiminor axis of the received location data are equal in magnitude. If so, the shape conversion process is bypassed to prevent error from being introduced into the location data.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: June 7, 2022
    Assignee: T-MOBILE USA, INC.
    Inventors: Wei-Ming Lan, Nan Xiao