Patents by Inventor Chih-Hsiang Wu

Chih-Hsiang Wu 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: 20250016885
    Abstract: A method, implemented in a User Equipment (UE), for receiving Multicast and/or Broadcast services (MBS) data includes performing a Protocol Data Unit (PDU) session establishment procedure with a Core Network (CN) to establish a PDU session to join an MBS session, including receiving, from a Radio Access Network (RAN), at least one first configuration for configuring radio resources for the PDU session; performing an MBS session join procedure with the CN to join the MBS session, including receiving, from the CN, an MBS session identifier and receiving, from the RAN, at least one second configuration for configuring radio resources for the MBS session; receiving, from the CN via the RAN, first MBS data of the MBS session in accordance with the at least one first configuration; and receiving, from the CN via the RAN, second MBS data of the MBS session in accordance with the at least one second configuration.
    Type: Application
    Filed: October 18, 2022
    Publication date: January 9, 2025
    Inventor: Chih-Hsiang Wu
  • Publication number: 20250008624
    Abstract: The disclosure provides a driving device and a driving method for a light-emitting element. The driving device includes a driving circuit, a softstart circuit, and a capacitor. An output terminal of the softstart circuit is coupled to the capacitor and the driving circuit to provide a dimming voltage. A driving signal output by the driving circuit drives a light-emitting element circuit. The driving circuit is enabled or disabled based on an enabling signal. Based on a relationship between the dimming voltage and current information of the light-emitting element circuit, the driving circuit dynamically adjusts a duty cycle of the driving signal. In response to the enabling signal disabling the driving circuit, the softstart circuit pulls down an original adjustment voltage to generate a pulled-down voltage as the dimming voltage. In response to the enabling signal enabling the driving circuit, the softstart circuit pulls up the dimming voltage.
    Type: Application
    Filed: May 17, 2024
    Publication date: January 2, 2025
    Applicant: Qisda Corporation
    Inventor: Chih-Hsiang Wu
  • Publication number: 20250008483
    Abstract: Managing paging for Multicast and/or Broadcast Services (MBSs) of interested UEs that do not have an active radio connection with the RAN can include providing, in MBS service paging instructions, indications of respective radio capabilities of interested UEs in conjunction with the identifications of the interested UEs, e.g., so that DUs can have necessary UE radio capability information in-line with the paging instructions. Another technique can include a base station providing an indication of UE radio capability information of interested UEs to another base station. Still another technique includes storing, at a DU or at a CU, an indication of UE radio capabilities and/or a default or predetermined set of UE radio capabilities for use in paging interested UEs.
    Type: Application
    Filed: October 18, 2022
    Publication date: January 2, 2025
    Inventors: Chih-Hsiang Wu, Jing-Rong Hsieh
  • Publication number: 20250008534
    Abstract: Methods for managing radio resources for multicast and/or broadcast services (MBS), which may be implemented in a distributed unit (DU) or a central unit (CU) of a distributed base station, are provided. One such method, in a DU, includes receiving, from a CU, a CU-to-DU message associated with an MRB, and including, based on QoS parameter(s) included in the CU-to-DU message, one or more multicast configuration parameters in a DU-to-CU message. The method also includes transmitting the DU-to-CU message to the CU. Another method, in a CU, includes receiving, from a core network, a CN-to-BS message associated with an MBS session, and including, based on one or more QoS parameters included in the CN-to-BS message, an indication to request one or more multicast configuration parameters in a CU-to-DU message. The method also includes transmitting the CU-to-DU message to a DU of the distributed base station.
    Type: Application
    Filed: October 21, 2022
    Publication date: January 2, 2025
    Inventor: Chih-Hsiang Wu
  • Publication number: 20250008593
    Abstract: A method for delivering data to User Equipments (UEs) is implemented in a node of a Radio Access Network (RAN), and includes receiving, from a network node, a packet including data that is to be delivered from a Core Network (CN) to one or more User Equipments (UEs); transmitting the packet to at least some of the one or more UEs via a broadcast transmission when the packet is received via a common downlink tunnel or via a first DL tunnel of a plurality of DL tunnels; and transmitting the packet to a particular UE of the one or more UEs via a unicast transmission when the packet is not received via the common downlink tunnel or is received via a second DL tunnel of the plurality of DL tunnels.
    Type: Application
    Filed: October 18, 2022
    Publication date: January 2, 2025
    Inventor: Chih-Hsiang Wu
  • Patent number: 12185276
    Abstract: A secondary node (SN) for requesting a master node (MN) to page a user equipment (UE) operating in dual connectivity (DC) with the MN and the SN receives, from a core network (CN), downlink traffic for the UE in an inactive state of a protocol for controlling radio resources, the inactive state being associated with a suspended radio connection between the UE and a radio access network (RAN) (802), and transmits, to the MN, a message that causes the MN to initiate RAN paging of the UE (804).
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: December 31, 2024
    Assignee: GOOGLE LLC
    Inventors: Jing Hsieh, Chih-Hsiang Wu
  • Patent number: 12185374
    Abstract: An enhanced LBT procedure (200) mitigates unnecessary delays in delivering transmissions between User Equipment and base stations over unlicensed spectrum. A UE or base station selects a particular CAPC corresponding to an intended transmission (225) based on an intelligent mapping of different types of transmission payload (e.g., transmission payload other than or in in addition to pre-defined, QoS-related UP message data payload) to different CAPCs. Most (if not all) of the mapped CAPCs corresponding to the different types of transmission payload are of a higher priority than a lowest priority CAPC (212-222), resulting in channel access procedures that are more commensurate with respective transmission payloads.
    Type: Grant
    Filed: February 23, 2020
    Date of Patent: December 31, 2024
    Assignee: GOOGLE LLC
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240430981
    Abstract: In a method for configuring a radio bearer, a distributed unit (DU) of a distributed base station receives, from a central unit (CU) of the distributed base station, a request to configure radio resources for a radio bearer and, based on one or more factors associated with the radio bearer, either includes or refrains from including in a response one or more configuration parameters for the radio bearer. The DU also transmits the response to the CU.
    Type: Application
    Filed: October 21, 2022
    Publication date: December 26, 2024
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240430980
    Abstract: In a method of managing multicast and/or broadcast services (MBS) communications after a state transition, a UE receives MBS data from a RAN using MBS configuration parameters while the UE is in a connected state with the RAN. The CE transitions from the connected state to an idle state or an inactive state. While the UE is in the idle state or the inactive state, and based on whether the MBS configuration parameters are for receiving a broadcast MBS session or a non-broadcast MBS session, the UE either continues or does not continue, respectively, to receive MBS data using the MBS configuration parameters.
    Type: Application
    Filed: October 21, 2022
    Publication date: December 26, 2024
    Inventors: Chih-Hsiang Wu, Teming Chen
  • Publication number: 20240422802
    Abstract: To manage transmission of multicast and/or broadcast services (MBS), a base station receives, from a core network (CN), a request to configure a common tunnel associated with an MBS session, via which the base station is to receive MBS data, from the CN, for wireless transmission to multiple user equipment (UEs) (1902). In response to the request, the base station transmits, to the CN, a configuration of the common tunnel (1904).
    Type: Application
    Filed: October 13, 2022
    Publication date: December 19, 2024
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240422804
    Abstract: A method for managing transmission of MBS is implemented in a CU of a distributed base station that includes the CU and a DU. The method includes receiving from a core network (CN), a request to configure resources for transmitting downlink (DL) MBS data associated with an MBS session; determining, based at least one of (i) a capability of the DU or (ii) a capability of a UE that joined the MBS session, whether the DU should transmit the MBS data to the UE over at least one of a radio interface using a PTP or a PTM delivery mechanism; and causing the DU to transmit the MBS data in accordance with the determined delivery mechanism.
    Type: Application
    Filed: October 18, 2022
    Publication date: December 19, 2024
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240422803
    Abstract: A method for managing transmission of multicast and/or broadcast services (MBS) is implemented in a central unit (CU) of a distributed base station that includes the CU and a distributed unit (DU). The method includes receiving, from a core network (CN), a request to configure CN-to-BS resources for transmitting downlink (DL) MBS data associated with an MBS session, from the CN for multiple user equipment units (UEs) via the distributed base station (602); obtaining a configuration for a downlink (DL) tunnel for transmitting the DL MBS data from the CU to the DU (606); and communicating the DL MBS data between the CN and the DU using the CN-to-BS resources and the configuration for the DL tunnel (614, 616).
    Type: Application
    Filed: October 18, 2022
    Publication date: December 19, 2024
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240422575
    Abstract: A method in a user device (UE) capable of operating in dual-mode connectivity (DC) with a master node (MN) and a secondary node (SN) of a radio access network (RAN) includes receiving, from the RAN, a configuration related to a DC procedure and a network-specified condition to be satisfied before the UE applies the configuration (3402); determining whether a single connectivity (SC) condition of the UE is satisfied (3404); and, when SC condition is satisfied, inhibiting the UE from applying the configuration (3406).
    Type: Application
    Filed: July 9, 2021
    Publication date: December 19, 2024
    Inventor: Chih-Hsiang Wu
  • Patent number: 12167281
    Abstract: A first base station (BS) for handling RB configurations of radio access technologies (RATs) comprises at least one storage device; and at least one processing circuit, coupled to the at least one storage device. The at least one storage device stores, and the at least one processing circuit is configured to execute instructions of: receiving, from a second BS, a first RB configuration of a first RAT and a second RB configuration of a second RAT for a first communication device, wherein the first RB configuration and the second RB configuration are associated to a first RB; and communicating first data associated to the first RB with the first communication device according to the first RB configuration and the second RB configuration; wherein the first RB configuration comprises a first RB identity identifying the first RB, and the second RB configuration comprises the first RB identity.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: December 10, 2024
    Assignee: HTC Corporation
    Inventor: Chih-Hsiang Wu
  • Patent number: 12167488
    Abstract: A method, in a user device configured to communicate with a base station, for managing communication of a segmented radio resource control (RRC) message that includes N segments includes transmitting (222) a first M segments of the segmented RRC message to the base station, M being an integer greater than zero and less than N, detecting (230 or 330), by processing hardware of the user device and before transmitting an (M+1)-th segment of the segmented RRC message, an intervening event, that triggers an RRC procedure, and, after detecting the intervening event, transmitting (260) the (M+1)-th segment through an N-th segment of the segmented RRC message to the base station before the RRC procedure has completed.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: December 10, 2024
    Assignee: GOOGLE LLC
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240407022
    Abstract: To manage multicast and unicast data transmissions. a base station receives. from a core network (CN), a multicast and/or broadcast services (MBS) downlink data packet via a downlink tunnel (602). The base station determines whether to transmit the MBS downlink data packet to a plurality of UEs via unicast or multicast. Then the base station transmits the MBS downlink data packet to a plurality of first UEs via a multicast data transmission (606), and/or transmits the MBS downlink data packet to a plurality of second UEs via a plurality of unicast data transmissions (608).
    Type: Application
    Filed: October 18, 2022
    Publication date: December 5, 2024
    Inventor: Chih-Hsiang Wu
  • Publication number: 20240406874
    Abstract: A user device capable of operating in dual-mode connectivity with a master node and a secondary node detects a low-power condition of a battery of the UE. In response, the user device prevents the UE from operating in DC with the SN, so that the UE and the MN are configured to operate in single connectivity.
    Type: Application
    Filed: August 8, 2024
    Publication date: December 5, 2024
    Inventor: Chih-Hsiang WU
  • Publication number: 20240406846
    Abstract: A user equipment (UE) can perform a method for managing inter-frequency measurements. The method includes: determining (902) one or more carrier frequencies for inter-frequency measurements while a radio connection between the UE and the RAN is not active; determining (904) that data is available for early data communication between the UE and a core network (CN); and determining (906) whether to suspend (i) inter-frequency measurements on at least one of the carrier frequencies or (ii) the early data communication.
    Type: Application
    Filed: July 28, 2022
    Publication date: December 5, 2024
    Inventor: Chih-Hsiang Wu
  • Patent number: 12137477
    Abstract: A user device (UE) for scheduling an uplink transmission assignment with a base station that communicates with the user device via a shared carrier, receives, from the base station, a configuration that indicates (i) a first channel access procedure for the user device to perform prior to transmitting an uplink transmission and (ii) at least one occasion at which the user device is to transmit the uplink transmission (1602); receives, from the base station via the shared carrier, a signal indicating at least a portion of a transmission time period during which the shared carrier is available to the base station (1604); and performs the first channel access procedure or a second channel access procedure before transmitting the uplink transmission based at least in part on whether the occasion is within the transmission time period (1606).
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: November 5, 2024
    Assignee: GOOGLE LLC
    Inventors: Kao-Peng Chou, Chih-Hsiang Wu
  • Patent number: 12137478
    Abstract: Granting access to a communication channel for a user device by a base station includes receiving, from a user device, a request to access the communication channel, the request including a random access preamble and a payload, attempting to decode the payload, selecting a format of a response message in accordance with whether the payload was decoded successfully, and transmitting, to the user device, the response message, including providing an indication of the format of the response message to the user device.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: November 5, 2024
    Assignee: GOOGLE LLC
    Inventor: Chih-Hsiang Wu