Patents by Inventor Liangchi Hsu

Liangchi Hsu 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: 20250063567
    Abstract: A UE may include IoT NTN device, and the UE may acquire the GNSS location to perform the time/frequency pre-compensation. A NAS layer of the UE may initiate a connection request procedure based on the GNSS fix procedure at one or more lower layer of the UE. A network may transmit a paging request to the UE, and manage a paging response timer based on the GNSS fix procedure at the UE.
    Type: Application
    Filed: November 7, 2024
    Publication date: February 20, 2025
    Inventors: Amer CATOVIC, Mungal Singh DHANDA, Ayan SENGUPTA, Alberto RICO ALVARINO, Liangchi HSU, Bharat SHRESTHA, Luis Fernando Brisson LOPES, Stephen William EDGE
  • Patent number: 12219564
    Abstract: A UE may include IoT NTN device, and the UE may acquire the GNSS location to perform the time/frequency pre-compensation. A NAS layer of the UE may initiate a connection request procedure based on the GNSS fix procedure at one or more lower layer of the UE. A network may transmit a paging request to the UE, and manage a paging response timer based on the GNSS fix procedure at the UE.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: February 4, 2025
    Assignee: QUALCOMM Incorporated
    Inventors: Amer Catovic, Mungal Singh Dhanda, Ayan Sengupta, Alberto Rico Alvarino, Liangchi Hsu, Bharat Shrestha, Luis Fernando Brisson Lopes, Stephen William Edge
  • Publication number: 20250031264
    Abstract: A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE identify, based on a support of a cell for the UE operating with reduced capability, a cell type of the cell. The cell type is one of a reduced capability (RC) type, a fallback (FB) type, or a neither (N) type, corresponding to various support for the UE operating with the reduced capability. The UE further configures a device mode, where the device mode includes an RC mode or a FB-allowed mode, and manages the connection between the UE and the cell based on the device mode and the cell type.
    Type: Application
    Filed: September 25, 2023
    Publication date: January 23, 2025
    Inventors: Arvind Vardarajan SANTHANAM, Shanshan WANG, Reza SHAHIDI, Liangchi HSU, Kuo-Chun LEE, Leena ZACHARIAS, Girish KHANDELWAL, Kai TANG
  • Publication number: 20250031100
    Abstract: A method for wireless communication at a user equipment (UE) and related apparatus are provided. In the method, the UE identifies the cell type of a cell based on the support for the UE operating with reduced capability. The cell type may be the reduced-capability (RC) type, indicating the support for the UE operating with the reduced capability, the fallback (FB) type, indicating a lack of support for the UE operating with the reduced capability and support for establishing a connection with the UE operating with the reduced capability, and the neither (N) type, indicating the lack of support for the UE operating with the reduced capability and a lack of support for establishing a connection with the UE operating with the reduced capability. The UE further manages a connection between the UE and the cell based on the cell type.
    Type: Application
    Filed: July 17, 2023
    Publication date: January 23, 2025
    Inventors: Arvind Vardarajan SANTHANAM, Shanshan WANG, Reza SHAHIDI, Liangchi HSU, Kuo-Chun LEE, Leena ZACHARIAS, Girish KHANDELWAL
  • Publication number: 20240323677
    Abstract: Techniques are provided for receiving encrypted positioning assistance data, requesting and obtaining cipher keys to decrypt the positioning assistance data. An example method for transmitting a cipher key request includes receiving cipher key information including a start time value, a duration value, and an advance time value, determining an advance time duration that is equal to a sum of the start time value and the duration value minus the advance time value, and transmitting the cipher key request within the advance time duration.
    Type: Application
    Filed: March 21, 2023
    Publication date: September 26, 2024
    Inventors: Kuo-Chun LEE, Arvind Vardarajan SANTHANAM, Shanshan WANG, Liangchi HSU, Abhishek BHATNAGAR, Prashanth MYSORE, Priya RAJAN, Karthik VENKATRAM, Daniel AMERGA, Osama LOTFALLAH, Lenaig Genevieve CHAPONNIERE
  • Patent number: 12081464
    Abstract: Aspects described herein relate to communicating with multiple cells based on two separate subscriptions stored at the UE in a dual subscription dual standby (DSDS) mode, switching to communicate with the multiple cells in a dual subscription dual active (DSDA) mode, transmitting, to at least one of the multiple cells and based on a number of component carriers allowed for a subscription being exceeded by switching to communicate in the DSDA mode, assistance information to indicate a threshold amount of component carriers for the UE, and transmitting, to at least one of the multiple cells and based on the number of component carriers allowed for the subscription being exceeded by switching to communicate in the DSDA mode, a channel quality indicator (CQI) value for one or more cells of the multiple cells to request deactivation of one or more component carriers with, or release of, the one or more cells.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: September 3, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Arvind Vardarajan Santhanam, Reza Shahidi, Qingxin Chen, Liangchi Hsu, Cheol Hee Park, Mona Agrawal, Hemanth Kumar Rayapati, Sridhar Bandaru
  • Patent number: 12075381
    Abstract: Methods, systems, and devices for wireless communications are described. A communication device, otherwise known as a user equipment (UE) may transmit a data transmission to a receiver. In some examples, the data transmission may be a radio link control (RLC) protocol data unit (PDU) transmission. The UE may store the data transmission in a retransmission buffer, and transmit a feedback request to the receiver in a subsequent data transmission based on a system memory utilization threshold for the retransmission buffer being satisfied due to storage of the data transmission.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: August 27, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Sivashankar Sekar, Saket Bathwal, Liangchi Hsu, Raghuveer Ramakrishna Srinivas Tarimala
  • Publication number: 20240236864
    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support enhanced power saving mode (PSM) for an active time duration of a PSM with extended discontinuous reception (eDRX) configuration in a wireless communication system. In one aspect, a user equipment (UE) is configured to enter a deep sleep mode during inactive times of a PSM, and to operate in eDRX mode during the active times of the PSM. Operating in eDRX mode during the active times includes dividing each of the active time durations into at least one eDRX idle period and at least one eDRX paging period. The UE determines whether a set of criteria for implementing a variant of the PSM is met, and when the set of criteria is met, the UE implements the variant of the PSM, which includes powering down the UE to a deep sleep mode at least during eDRX idle periods.
    Type: Application
    Filed: April 15, 2022
    Publication date: July 11, 2024
    Inventors: Pravin Singh, Anshita Agrawal, Raghuveer Ramakrishna Srinivas Tarimala, Liangchi Hsu, Hemanth S, Banuprakash Venkatarathnam Uppacharla
  • Publication number: 20240179512
    Abstract: A method for of wireless communication, by a multi-subscription user equipment (UE) includes selecting a first subscription to receive a positioning system information broadcast (posSIB) based on a first subscription state and a second subscription state. The method also includes receiving the posSIB via the first subscription. The UE may switch from the first subscription to a second subscription to receive a subsequent posSIB, in response to the second subscription state changing and/or the first subscription state changing. The state switching may be between connected mode and inactive/idle mode, or between voice service and data service.
    Type: Application
    Filed: November 28, 2022
    Publication date: May 30, 2024
    Inventors: Kuo-Chun LEE, Qingxin CHEN, Arvind Vardarajan SANTHANAM, Reza SHAHIDI, Shanshan WANG, Liangchi HSU, Rishav REJ, Ie-Hong LIN, Karthik VENKATRAM, Subashini KRISHNAMURTHY, Sudeep JAIN, Amit JAIN, Tom CHIN
  • Patent number: 11979816
    Abstract: The present disclosure relates to a user equipment (UE) dynamically adjusting a non-access stratum (NAS) timer. Specifically, the UE may determine operation in a wideband and support of an extended coverage (EC) restriction. The UE may further identify a duration of a non-access stratum (NAS) timer based on determining operation in the wideband and the EC restriction. The UE may further transmit an access request message to a network entity to trigger a mobility management procedure. The UE may further receive an acceptance message from the network entity indicating an unrestricted or restricted status of the EC restriction. The UE may further apply the duration to the NAS timer based on the acceptance message indicating the unrestricted or restricted status of the EC restriction received from the network entity or a history of EC restrictions of a public land mobile network (PLMN) in a defined geographic area.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: May 7, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Osama Lotfallah, Amer Catovic, Liangchi Hsu, Lenaig Genevieve Chaponniere, Arvind Vardarajan Santhanam
  • Publication number: 20240137871
    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support enhanced power saving mode (PSM) for an active time duration of a PSM with extended discontinuous reception (eDRX) configuration in a wireless communication system. In one aspect, a user equipment (UE) is configured to enter a deep sleep mode during inactive times of a PSM, and to operate in eDRX mode during the active times of the PSM. Operating in eDRX mode during the active times includes dividing each of the active time durations into at least one eDRX idle period and at least one eDRX paging period. The UE determines whether a set of criteria for implementing a variant of the PSM is met, and when the set of criteria is met, the UE implements the variant of the PSM, which includes powering down the UE to a deep sleep mode at least during eDRX idle periods.
    Type: Application
    Filed: April 14, 2022
    Publication date: April 25, 2024
    Inventors: Pravin Singh, Anshita Agrawal, Raghuveer Ramakrishna Srinivas Tarimala, Liangchi Hsu, Hemanth S, Banuprakash Venkatarathnam Uppacharla
  • Patent number: 11968674
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a control message indicating a resource configuration for uplink and downlink transmissions. The UE may determine an uplink buffer threshold for a modem buffer of the UE based on the resource configuration. The UE may transmit, to the base station, a feedback request message requesting that the base station provide feedback for at least one previously transmitted uplink packet based on a comparison of an amount of previously transmitted uplink data and scheduled uplink data stored in the modem buffer relative to the uplink buffer threshold. The UE may receive, based on transmitting the feedback request message, a feedback response message corresponding to a first previously transmitted uplink packet of the at least one previously transmitted uplink packet.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: April 23, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Arnaud Meylan, Sitaramanjaneyulu Kanamarlapudi, Vishal Dalmiya, Kuo-Chun Lee, Shailesh Maheshwari, Vaishakh Rao, Arun Prasanth Balasubramanian, Subashini Krishnamurthy, Leena Zacharias, Sivashankar Sekar, Saket Bathwal, Liangchi Hsu, Raghuveer Ramakrishna Srinivas Tarimala
  • Patent number: 11963053
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, via a first subscription of the UE, a trigger event for a conditional handover of the UE from a source network entity to a target network entity. The UE may determine, based at least in part on the trigger event, that a target band associated with the target network entity is not compatible with a serving band associated with a second subscription of the UE. The UE may store the trigger event for the conditional handover in a buffer of the UE. The UE may perform an action related to the conditional handover based at least in part on a condition being satisfied. Numerous other aspects are described.
    Type: Grant
    Filed: February 18, 2022
    Date of Patent: April 16, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Qingxin Chen, Arvind Vardarajan Santhanam, Reza Shahidi, Mouaffac Ambriss, Liangchi Hsu, Tom Chin
  • Patent number: 11930482
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a multi-subscriber identity module (SIM) user equipment (UE) may communicate, using a first SIM, on a plurality of component carriers. The multi-SIM UE may select a first subset of component carriers from the plurality of component carriers based at least in part on a component carrier prioritization. The multi-SIM UE may identify an amount of memory available to a second SIM. The multi-SIM UE may tune away, based at least in part on the amount of memory available to the second SIM, from a second subset of component carriers The first subset of component carriers may be different from the second subset of component carriers. Numerous other aspects are described.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: March 12, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Francis Ming-Meng Ngai, Arnaud Meylan, Suli Zhao, Liangchi Hsu, Cheol Hee Park, Qingxin Chen, Jun Hu, Leena Zacharias, Pulkit Hanswal, Reza Shahidi, Thawatt Gopal, Raghu Narayan Challa, Heechoon Lee
  • Publication number: 20230319626
    Abstract: Methods, systems, and devices for wireless communications are described. Techniques are described to enable wake-up signal (WUS) error handling at a user equipment (UE). The UE may detect an error pattern when attempting to receive a WUS from a base station based on a configuration for receiving the WUS. For example, the base station may transmit the configuration for receiving the WUS to a set of UEs including the UE. Based on detecting the error pattern, the UE may perform a mitigation operation based on determining the error pattern, such as waking up multiple cells to receive a transmission indicated by the WUS, transmitting a radio link failure indication to the base station, etc. Additionally or alternatively, the base station may transmit multiple WUSs to the UEs, such as a first WUS according to the configuration and a second WUS according to a reconfiguration.
    Type: Application
    Filed: May 3, 2023
    Publication date: October 5, 2023
    Inventors: Kuo-Chun Lee, Arvind Vardarajan Santhanam, Liangchi Hsu, Peter Pui Lok Ang
  • Publication number: 20230269636
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine, via a first subscription of the UE, a trigger event for a conditional handover of the UE from a source network entity to a target network entity. The UE may determine, based at least in part on the trigger event, that a target band associated with the target network entity is not compatible with a serving band associated with a second subscription of the UE. The UE may store the trigger event for the conditional handover in a buffer of the UE. The UE may perform an action related to the conditional handover based at least in part on a condition being satisfied. Numerous other aspects are described.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 24, 2023
    Inventors: Kuo-Chun LEE, Qingxin CHEN, Arvind Vardarajan SANTHANAM, Reza SHAHIDI, Mouaffac AMBRISS, Liangchi HSU, Tom CHIN
  • Patent number: 11696173
    Abstract: Methods, systems, and devices for wireless communications are described. Techniques are described to enable wake-up signal (WUS) error handling at a user equipment (UE). The UE may detect an error pattern when attempting to receive a WUS from a base station based on a configuration for receiving the WUS. For example, the base station may transmit the configuration for receiving the WUS to a set of UEs including the UE. Based on detecting the error pattern, the UE may perform a mitigation operation based on determining the error pattern, such as waking up multiple cells to receive a transmission indicated by the WUS, transmitting a radio link failure indication to the base station, etc. Additionally or alternatively, the base station may transmit multiple WUSs to the UEs, such as a first WUS according to the configuration and a second WUS according to a reconfiguration.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: July 4, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Kuo-Chun Lee, Arvind Vardarajan Santhanam, Liangchi Hsu, Peter Pui Lok Ang
  • Publication number: 20230111492
    Abstract: The present disclosure relates to a user equipment (UE) dynamically adjusting a non-access stratum (NAS) timer. Specifically, the UE may determine operation in a wideband and support of an extended coverage (EC) restriction. The UE may further identify a duration of a non-access stratum (NAS) timer based on determining operation in the wideband and the EC restriction. The UE may further transmit an access request message to a network entity to trigger a mobility management procedure. The UE may further receive an acceptance message from the network entity indicating an unrestricted or restricted status of the EC restriction. The UE may further apply the duration to the NAS timer based on the acceptance message indicating the unrestricted or restricted status of the EC restriction received from the network entity or a history of EC restrictions of a public land mobile network (PLMN) in a defined geographic area.
    Type: Application
    Filed: December 8, 2022
    Publication date: April 13, 2023
    Inventors: Osama LOTFALLAH, Amer CATOVIC, Liangchi HSU, Lenaig Genevieve CHAPONNIERE, Arvind Vardarajan SANTHANAM
  • Patent number: 11606807
    Abstract: Aspects described herein relate to configuring and indicating radio resource control (RRC) message types in wireless communications, to support new UE categories, new operation modes, new use cases, or a combination thereof. Configuration and indication methods that may support co-existence of new and legacy RRC message types and/or user equipment (UE) procedures for decoding new RRC message type are also described.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: March 14, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jing Lei, Hwan Joon Kwon, Linhai He, Huilin Xu, Peter Pui Lok Ang, Wanshi Chen, Xipeng Zhu, Liangchi Hsu
  • Publication number: 20230048785
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a multi-subscriber identity module (SIM) user equipment (UE) may communicate, using a first SIM, on a plurality of component carriers. The multi-SIM UE may select a first subset of component carriers from the plurality of component carriers based at least in part on a component carrier prioritization. The multi-SIM UE may identify an amount of memory available to a second SIM. The multi-SIM UE may tune away, based at least in part on the amount of memory available to the second SIM, from a second subset of component carriers The first subset of component carriers may be different from the second subset of component carriers. Numerous other aspects are described.
    Type: Application
    Filed: August 13, 2021
    Publication date: February 16, 2023
    Inventors: Francis Ming-Meng NGAI, Arnaud MEYLAN, Suli ZHAO, Liangchi HSU, Cheol Hee PARK, Qingxin CHEN, Jun HU, Leena ZACHARIAS, Pulkit HANSWAL, Reza SHAHIDI, Thawatt GOPAL, Raghu Narayan CHALLA, Heechoon LEE