Patents by Inventor Tzu-Chung HSIEH

Tzu-Chung HSIEH 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: 11870541
    Abstract: Method including: receiving, on a feeder link, a signal including feeder link slots having a feeder link bandwidth; mapping each of the feeder link slots onto a respective slot-subband in a respective service link slot according to a rule; transmitting, on plural service links, service signals, wherein each of the service signals includes service link slots each including m of the slot-subbands having a same bandwidth; the m slot-subbands do not overlap, are continuous with each other, and cover an entire service link bandwidth of the respective service link slot; wherein the feeder link slots have a feeder link slot duration; the service link slots have a service link slot duration longer than the feeder link slot duration; each of the feeder link slots including respective symbols; each of the slot-subbands includes the symbols of the feeder link slot mapped onto the respective slot-subband.
    Type: Grant
    Filed: June 20, 2023
    Date of Patent: January 9, 2024
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Shahzada Basharat Rasool, Tzu-Chung Hsieh, Rapeepat Ratasuk
  • Publication number: 20240007979
    Abstract: Methods and apparatus, including computer program products, are provided for switching between platforms. In some example embodiment, there may be provided a method, which may include receiving, by a user equipment, a notification indicative of a switch from a first platform to a second platform; calculating, by the user equipment, a timing advance for use with the second platform; and accessing, by the user equipment, the second platform after the switch to the second platform, the accessing based on at least the calculated timing advance. Related systems, methods, and articles of manufacture are also disclosed.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 4, 2024
    Inventors: Ryan Keating, Tzu-Chung Hsieh, Jeroen Wigard, Rafhael Medeiros de Amorim
  • Publication number: 20230412254
    Abstract: Method including: receiving, on a feeder link, a signal including feeder link slots having a feeder link bandwidth; mapping each of the feeder link slots onto a respective slot-subband in a respective service link slot according to a rule; transmitting, on plural service links, service signals, wherein each of the service signals includes service link slots each including m of the slot-subbands having a same bandwidth; the m slot-subbands do not overlap, are continuous with each other, and cover an entire service link bandwidth of the respective service link slot; wherein the feeder link slots have a feeder link slot duration; the service link slots have a service link slot duration longer than the feeder link slot duration; each of the feeder link slots including respective symbols; each of the slot-subbands includes the symbols of the feeder link slot mapped onto the respective slot-subband.
    Type: Application
    Filed: June 20, 2023
    Publication date: December 21, 2023
    Inventors: Shahzada Basharat Rasool, Tzu-Chung HSIEH, Rapeepat RATASUK
  • Patent number: 11838873
    Abstract: Systems, methods, apparatuses, and computer program products for altitude-aware energy saving. The method may include receiving, from a network element, information including a coupling loss change or a reduced transmit power command. The method may also include controlling an uplink transmission based on the received information.
    Type: Grant
    Filed: April 15, 2021
    Date of Patent: December 5, 2023
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Gilsoo Lee, Rapeepat Ratasuk, Tzu-Chung Hsieh, Shahzada Basharat Rasool, Athul Prasad
  • Publication number: 20230296720
    Abstract: Aspects and embodiments relate to an apparatus and method for evaluating location of a terrestrial network node in a non-terrestrial network. In particular, one aspect provides an apparatus, comprising means for receiving an indication of propagation delay between a terrestrial network node and a non-terrestrial node in a non-terrestrial wireless communication network; means for receiving an indication of location of the non-terrestrial node; and means for evaluating location of the terrestrial network node in dependence upon the received indication of propagation delay between the terrestrial network node and the non-terrestrial node, and the indication of location of the non-terrestrial node. A further aspect provides a method of evaluating location of a terrestrial network node, and a computer program product operable, when executed on a computer, to perform that method.
    Type: Application
    Filed: March 20, 2023
    Publication date: September 21, 2023
    Applicant: Nokia Technologies Oy
    Inventors: Konstantinos MANOLAKIS, Tzu-Chung HSIEH, Frank FREDERIKSEN, Jeroen WIGARD, Rafhael MEDEIROS DE AMORIM
  • Patent number: 11711134
    Abstract: A system, apparatus, method, and non-transitory computer readable medium for providing autonomous beam switching for user equipment (UE) within a cell coverage area of a high-altitude platform station (HAPS) network device, the HAPS network device may be caused the HAPS network device to, determine beam layer information corresponding to the plurality of beam layers; transmit the beam layer information to the at least one UE; receive an autonomous beam switch request from the at least one UE in response to the transmitted beam layer information, the request including beam switch parameters; determine a selected beam layer based on the beam switch parameters; and enable communication with the at least one UE using the selected beam layer.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: July 25, 2023
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Tzu-Chung Hsieh, Shahzada Basharat Rasool, Gilsoo Lee, Athul Prasad, Rapeepat Ratasuk
  • Patent number: 11582003
    Abstract: Systems, methods, apparatuses, and computer program products for feeder link data transport are provided. For example, baseband in-phase and quadrature (IQ) data may be processed at the transmitter and receiver of the feeder link. The orthogonal frequency division multiplexing (OFDM) waveform used in a beam may be modified for transmission over the feeder link. For example, the waveform may have a wider subcarrier spacing (SCS) and may fill an enlarged bandwidth than otherwise with a feeder link.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: February 14, 2023
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Tzu-Chung Hsieh, Shahzada Basharat Rasool
  • Publication number: 20220338128
    Abstract: Systems, methods, apparatuses, and computer program products for altitude-aware energy saving. The method may include receiving, from a network element, information including a coupling loss change or a reduced transmit power command. The method may also include controlling an uplink transmission based on the received information.
    Type: Application
    Filed: April 15, 2021
    Publication date: October 20, 2022
    Inventors: Gilsoo Lee, Rapeepat Ratasuk, Tzu-Chung Hsieh, Shahzada Basharat Rasool, Athul Prasad
  • Publication number: 20220311573
    Abstract: Systems, methods, apparatuses, and computer program products for feeder link data transport are provided. For example, baseband in-phase and quadrature (IQ) data may be processed at the transmitter and receiver of the feeder link. The orthogonal frequency division multiplexing (OFDM) waveform used in a beam may be modified for transmission over the feeder link. For example, the waveform may have a wider subcarrier spacing (SCS) and may fill an enlarged bandwidth than otherwise with a feeder link.
    Type: Application
    Filed: March 26, 2021
    Publication date: September 29, 2022
    Inventors: Tzu-Chung Hsieh, Shahzada Basharat Rasool
  • Publication number: 20220294518
    Abstract: A system, apparatus, method, and non-transitory computer readable medium for providing autonomous beam switching for user equipment (UE) within a cell coverage area of a high-altitude platform station (HAPS) network device, the HAPS network device may be caused the HAPS network device to, determine beam layer information corresponding to the plurality of beam layers; transmit the beam layer information to the at least one UE; receive an autonomous beam switch request from the at least one UE in response to the transmitted beam layer information, the request including beam switch parameters; determine a selected beam layer based on the beam switch parameters; and enable communication with the at least one UE using the selected beam layer.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 15, 2022
    Inventors: Tzu-Chung Hsieh, Shahzada Basharat Rasool, Gilsoo Lee, Athul Prasad, Rapeepat Ratasuk
  • Publication number: 20220210612
    Abstract: Apparatus, methods and computer program products for user equipment positioning solutions and related signalling. An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to at least send (550), to a network node of a communication network, at least one signaling configuration with at least one set periodicity, wherein the at least one signaling configuration is for use at the network node in calculating at least position information for relaying to the communication network at least for positioning support of the apparatus, and receive (570) the positioning support from the communication network in response to the at least one signaling configuration.
    Type: Application
    Filed: April 28, 2020
    Publication date: June 30, 2022
    Inventors: Ryan KEATING, Rapeepat RATASUK, Tzu-Chung HSIEH
  • Patent number: 11191095
    Abstract: An uplink non-orthogonal multiple access for narrowband machine type communication used for the deployment of Internet of Things (IoT) interconnected devices where one or more user equipment are configured for uplink transmission with one or more uplink time-frequency regions for enhanced Machine Type Communication Non-Orthogonal Multiple Access. The configuring is based on defining and signaling one or more signal thresholds and one or more of a resource assignment, a starting subframe periodicity, a starting subframe offset, a time duration in each period, a demodulation reference signal cyclic shift assignment, orthogonal cover code assignment, and interleaver assignment.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: November 30, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Ryan Keating, Rapeepat Ratasuk, Nitin Mangalvedhe, Jun Tan, Jie Chen, Tzu-Chung Hsieh
  • Publication number: 20200008221
    Abstract: An uplink non-orthogonal multiple access for narrowband machine type communication used for the deployment of Internet of Things (IoT) interconnected devices where one or more user equipment are configured for uplink transmission with one or more uplink time-frequency regions for enhanced Machine Type Communication Non-Orthogonal Multiple Access. The configuring is based on defining and signaling one or more signal thresholds and one or more of a resource assignment, a starting subframe periodicity, a starting subframe offset, a time duration in each period, a demodulation reference signal cyclic shift assignment, orthogonal cover code assignment, and interleaver assignment.
    Type: Application
    Filed: February 1, 2018
    Publication date: January 2, 2020
    Inventors: Ryan KEATING, Rapeepat RATASUK, Nitin MANGALVEDHE, Jun TAN, Jie CHEN, Tzu-Chung HSIEH
  • Patent number: 10498410
    Abstract: Systems, methods, apparatuses, and computer program products for determining transmit weights are provided. One method includes selecting users to pair for multi-user multiple input multiple output transmission, calculating multi-user multiple input multiple output (MU-MIMO) transmit weights in a communication system employing an analog electrically steered array with Q antennas, applying the multi-user multiple input multiple output weights to the transmitted signals, and transmitting the weighted signals from an antenna array. The calculating may include calculating the MU-MIMO transmit weights so that a sum of power across a same element of the selected users' weight vectors is equal on all of the antennas and one of either sum throughput across users or sum signal to interference plus noise ratio (SINR) across users is maximized.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 3, 2019
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Timothy Thomas, Frederick Vook, Eugene Visotsky, Tzu-Chung Hsieh
  • Publication number: 20180212652
    Abstract: Systems, methods, apparatuses, and computer program products for determining transmit weights are provided. One method includes selecting users to pair for multi-user multiple input multiple output transmission, calculating multi-user multiple input multiple output (MU-MIMO) transmit weights in a communication system employing an analog electrically steered array with Q antennas, applying the multi-user multiple input multiple output weights to the transmitted signals, and transmitting the weighted signals from an antenna array. The calculating may include calculating the MU-MIMO transmit weights so that a sum of power across a same element of the selected users' weight vectors is equal on all of the antennas and one of either sum throughput across users or sum signal to interference plus noise ratio (SINR) across users is maximized.
    Type: Application
    Filed: January 25, 2017
    Publication date: July 26, 2018
    Inventors: Timothy THOMAS, Frederick VOOK, Eugene VISOTSKY, Tzu-Chung HSIEH