Patents by Inventor Liangping Ma

Liangping Ma 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: 20230247571
    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus at a UE in NTN are provided. An example method at a UE may include obtaining an indication of a subset of one or more SSB beams included in a set of SSB beams. The example method may further include outputting for transmission or obtaining a communication independent of using any resources associated with SSB transmission via the subset of one or more SSB beams.
    Type: Application
    Filed: January 31, 2022
    Publication date: August 3, 2023
    Inventors: Lianghai JI, Huilin XU, Liangping MA, Qiang WU, Jun MA, Mehmet Izzet GURELLI, Weimin DUAN, Karthik ANANTHA SWAMY
  • Publication number: 20230247577
    Abstract: A scheduling offset between an uplink and downlink radio frame timing structure of a user equipment (UE) may be updated to provide for more efficient utilization of hybrid automatic repeat request (HARQ) processes in a non-terrestrial network. For instance, different UEs may experience different round trip delays (RTDs) with a non-terrestrial cell. Different UEs may be configured with different scheduling offsets such that scheduling delays may be reduced and HARQ processes identifiers may be reused more rapidly. Additionally or alternatively, wireless communications systems may define one or more separation distances (or timing thresholds) for timing between communications and HARQ processes may be reused based on the separation distance threshold (e.g., such that a satellite may reuse a HARQ process ID for two scheduled communications that have not yet been performed by the UE).
    Type: Application
    Filed: April 6, 2023
    Publication date: August 3, 2023
    Inventors: Alberto RICO ALVARINO, Seyedkianoush HOSSEINI, Xiao Feng WANG, Liangping MA, Ayan SENGUPTA, Jun MA, Huilin XU, Peter GAAL, Bharat SHRESTHA
  • Publication number: 20230232440
    Abstract: Methods, systems, and devices for wireless communications are described. Some wireless devices may support a prediction capability for prediction-based control information. A first device may receive, from a second device, first control signaling that activates the predication capability of the first device to generate a set of one or more control parameters for communications. The second device may transmit second control signaling to the first device to indicate initial values of the control parameters and a channel condition model for the first device. The first device and the second device may generate a set of multiple values associated with the control parameters over a time period based on the initial values of the control parameters and the channel condition model. The first device and the second device may communicate during at least the time period according to the set of generated values associated with the control parameters.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 20, 2023
    Inventors: Huilin Xu, Lianghai Ji, Liangping Ma, Qiang Wu, Mehmet Izzet Gurelli, Jun Ma, Weimin Duan, Karthik Anantha Swamy
  • Publication number: 20230232384
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a beam used for communicating with a network entity, the beam associated with multiple bandwidth parts (BWPs) including a reference BWP with a first frequency. The UE may receive a BWP configuration from the network entity, the BWP configuration based on changing a frequency for at least one BWP of the multiple BWPs form the first frequency to a second frequency. Additionally or alternatively, the UE may identify a timing threshold associated with a BWP switching operation for multiple BWPs associated with the beam. The UE may switch from the first BWP to a second BWP during the timing threshold. The UE may communicate with the network entity according to the BWP configuration or the second BWP.
    Type: Application
    Filed: July 2, 2020
    Publication date: July 20, 2023
    Inventors: Liangping MA, Xiao Feng WANG, Peter GAAL, Ayan SENGUPTA, Alberto RICO ALVARINO, Bharat SHRESTHA, Jun MA, Umesh PHUYAL, Dan ZHANG, Huilin XU, Yiqing CAO
  • Patent number: 11706691
    Abstract: A UE may receive, from at least one cell via at least one bit in a MIB or a SIB, a barring indication based on a supported network of the at least one cell and a supported network of the UE. The supported network of the at least one cell may correspond to a TN or an NTN, and the supported network of the UE may correspond to a TN or an NTN. The UE may skip, based on the received barring indication, a selection of the at least one cell for communication. Accordingly, the UE may not camp on the at least one cell. The barring indication for NTN-supporting UEs and for TN-supporting UEs may be separately indicated via the MIB or the SIB.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: July 18, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Bharat Shrestha, Umesh Phuyal, Mungal Singh Dhanda, Alberto Rico Alvarino, Ayan Sengupta, Liangping Ma, Xiao Feng Wang
  • Publication number: 20230224863
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a network node, downlink control information (DCI) that schedules a downlink transmission and one or more repetitions of the downlink transmission. The DCI may indicate a first uplink resource for a first feedback message indicating whether the UE receives the downlink transmission and the one or more repetitions. Based on receiving the DCI, the UE may select a second uplink resource for a second feedback message indicating feedback that the UE received the DCI, where the second uplink resource occurs prior to the first uplink resource in a time domain. The UE may transmit the second feedback message on the second uplink resource. The UE and the network node may be part of a non-terrestrial network and, in some examples, may apply a configuration indicated in the DCI based on the second feedback message.
    Type: Application
    Filed: January 12, 2022
    Publication date: July 13, 2023
    Inventors: Lianghai JI, Liangping MA, Huilin XU, Qiang WU, Weimin DUAN, Mehmet Izzet GURELLI, Karthik ANANTHA SWAMY
  • Publication number: 20230224748
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a scaling factor for a UE measurement period based at least in part on the UE being associated with a non-terrestrial network (NTN). The UE may perform a measurement during a scaled UE measurement period based at least in part on the scaling factor and the UE measurement period. Numerous other aspects are described.
    Type: Application
    Filed: December 20, 2022
    Publication date: July 13, 2023
    Inventors: Changhwan PARK, Jae Ho RYU, Xiao Feng WANG, Bharat SHRESTHA, Liangping MA
  • Publication number: 20230224839
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a serving node associated with a non-terrestrial network (NTN), one or more timing advance (TA) values. The UE may transmit, to the serving node of the NTN, uplink signaling based at least in part on a reference timing for the uplink signaling, wherein the reference timing for the uplink signaling is based at least in part on a reference timing of a downlink signaling and the one or more TA values, wherein the one or more TA values include a UE-specific TA value, and wherein a reference timing of the UE-specific TA value is for: a first propagation delay on a service link between the UE and a satellite associated with the NTN, and a second propagation delay on the service link. Numerous other aspects are described.
    Type: Application
    Filed: December 20, 2022
    Publication date: July 13, 2023
    Inventors: Changhwan PARK, Xiao Feng WANG, Jae Ho RYU, Liangping MA
  • Publication number: 20230224725
    Abstract: Methods, systems, and devices for wireless communications are described. A communication device, otherwise known as a user equipment (UE) may determine a beam configuration associated with a set of directional beams of a base station. The beam configuration may include a set of identifiers associated with the set of directional beams. The UE may determine beam position information associated with a coverage area of each directional beam of the set of directional beams based on the beam configuration. Additionally or alternatively, the UE may determine beam classification information associated with the coverage area of each directional beam of the set of directional beams based on the beam configuration. The UE may select a directional beam of the set of directional beams based on the beam position information and the beam classification information, and communicate with the base station using the selected directional beam.
    Type: Application
    Filed: July 2, 2020
    Publication date: July 13, 2023
    Inventors: Liangping MA, Xiao Feng WANG, Ayan SENGUPTA, Alberto RICO ALVARINO, Bharat SHRESTHA, Jun MA, Peter GAAL, Umesh PHUYAL, Dan ZHANG, Huilin XU, Yiqing CAO
  • Patent number: 11700050
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine a polarization of a bandwidth part. The base station may transmit, to a user equipment, a polarization indication that indicates the polarization for the bandwidth part. Numerous other aspects are provided.
    Type: Grant
    Filed: September 8, 2021
    Date of Patent: July 11, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Liangping Ma, Xiao Feng Wang, Ayan Sengupta, Alberto Rico Alvarino, Peter Gaal, Bharat Shrestha, Jun Ma, Umesh Phuyal
  • Patent number: 11700080
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a report of a maximum transport block size supported by the UE for if hybrid automatic repeat request (HARQ) feedback is enabled and a maximum transport block size for is HARQ is disabled. The UE may receive, based at least in part on transmitting the report, one or more transport blocks that have a transport block size that does not exceed the maximum transport block sizes supported by the UE. In some aspects, the UE may receive an indication of a length of a span for receiving a set of bits from channel encoder output for a transport block or a redundancy version of a transport block. Numerous other aspects are provided.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: July 11, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Liangping Ma, Xiao Feng Wang, Alberto Rico Alvarino, Ayan Sengupta, Bharat Shrestha, Umesh Phuyal
  • Patent number: 11700589
    Abstract: Certain aspects of the present disclosure provide techniques for synchronization signal block (SSB) transmission in different frequency intervals. A method that may be performed by a user equipment (UE) includes receiving a first SSB from an entity in a non-terrestrial network (NTN) at a first time and frequency location. The method generally includes determining one or more time and frequency locations of one or more other SSBs from the entity in the NTN based on the first time and frequency location. The method generally includes monitoring for the one or more other SSBs at the determined one or more time and frequency locations.
    Type: Grant
    Filed: May 14, 2021
    Date of Patent: July 11, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Liangping Ma, Xiao Feng Wang, Ayan Sengupta, Alberto Rico Alvarino, Bharat Shrestha, Jun Ma, Peter Gaal, Umesh Phuyal, Dan Zhang, Qiang Wu
  • Publication number: 20230217289
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a measurement resource. The UE may perform a Layer 3 (L3) measurement of the measurement resource using a first polarization that is dedicated for performing L3 measurements and that is supported by the UE. Numerous other aspects are described.
    Type: Application
    Filed: January 5, 2022
    Publication date: July 6, 2023
    Inventors: Huilin XU, Lianghai JI, Liangping MA, Fei HUANG, Mehmet Izzet GURELLI, Weimin DUAN, Qiang WU, Jun MA, Karthik ANANTHA SWAMY
  • Patent number: 11696189
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for wireless communication via a non-terrestrial network (NTN). In one aspect, a method for wireless communication includes initiating, by a user equipment (UE), a registration process with a network entity of an NTN to access the NTN. The method further includes transmitting, by the UE to the network entity, UE capability information of the UE. Other aspects and features are also claimed and described.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: July 4, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Huilin Xu, Qiang Wu, Jun Ma, Xiao Feng Wang, Iyab Issam Sakhnini, Dan Zhang, Liangping Ma
  • Publication number: 20230198610
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling identifying a configuration of a set of uplink slots for the UE to transmit uplink reference signals to a satellite. The UE may transmit, to the satellite, a set of uplink reference signals on the set of uplink slots according to the configuration. The set of uplink reference signals may include sounding reference signals (SRSs), positioning references signals (PRSs), or both. In some implementations, the UE may transmit the set of uplink reference signals in accordance with one or more timing advance values, where the timing advance values are indicated to the satellite by the UE, pre-configured by the satellite, or both. The UE may then, from a network node, an indication of a position of the UE based on the set of uplink reference signals.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 22, 2023
    Inventors: Liangping Ma, Xiao Feng Wang, Harikumar Krishnamurthy, Alberto Rico Alvarino, Ayan Sengupta, Bharat Shrestha
  • Patent number: 11677509
    Abstract: Methods, systems, and devices for wireless communications are described in which a physical layer at a user equipment (UE) or a base station may generate feedback for one or more communications that are attempted to be received from a transmitting device. The physical layer feedback may be communicated to the transmitting device in higher layer communications, such as in a medium access control (MAC) layer control element (CE), where the MAC layer is a higher layer than the physical layer in a multi-layer protocol stack of the UE and base station. The physical layer feedback may be communicated after being triggered by one or more conditions at the UE or base station.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: June 13, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Bharat Shrestha, Xiao Feng Wang, Umesh Phuyal, Alberto Rico Alvarino, Liangping Ma
  • Patent number: 11671932
    Abstract: Various aspects relate to adjusting communication timing in response to a switch from one feeder link to another feeder link in a non-terrestrial network. For example, when a satellite moves out of the coverage area of a first ground network entity (or if the first ground network entity is turned off), the satellite switches to a second ground network entity. The resulting switch from a first feeder link for the first ground network entity to a second feeder link for the second ground network entity may cause a timing glitch that adversely affects the UEs under the coverage of the satellite. The disclosure relates in some aspects to sending an indication of the switch and/or a common timing adjust command to all of the UEs affected by the feeder link switch.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: June 6, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Huilin Xu, Jun Ma, Qiang Wu, Xiao Feng Wang, Iyab Issam Sakhnini, Dan Zhang, Liangping Ma
  • Patent number: 11665745
    Abstract: Methods, systems, and devices for wireless communications are described in which random access preambles may be designed to provide for relatively low inter-carrier interference (ICI) of adjacent available frequency resources in a non-terrestrial network (NTN). Random access preambles for NTN random access requests may be selected from a first set of random access preambles that are different from a second set of random access preambles for terrestrial random access requests. The first set of random access preambles may be a subset of the second set of random access preambles. The first set of random access preambles may be provided for contention-based random access (CBRA) and contention-free random access (CFRA) preambles may be configured by a base station from random access preambles that correspond to or are different from the second set of random access preambles.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: May 30, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Ayan Sengupta, Xiao Feng Wang, Alberto Rico Alvarino, Peter Gaal, Liangping Ma, Le Liu, Jun Ma, Bharat Shrestha, Umesh Phuyal
  • Patent number: 11659599
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may account for propagation delay when initiating a random access (RACH) procedure. For example, the UE may determine transmission timing for a RACH preamble based on an estimated propagation delay, such that the RACH preamble is received at a base station approximately at the beginning of a slot. To support reliable communication of the RACH preamble, the UE may implement a timing offset. In some examples, the base station may configure the UE with the timing offset using system information. Alternatively, the UE may be pre-configured with the timing offset. By determining the transmission timing for the RACH preamble further based on the timing offset, the UE may ensure that the RACH preamble is received at the base station after a slot boundary (e.g., avoiding causing interference to communications in a previous slot).
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: May 23, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Jun Ma, Qiang Wu, Dan Zhang, Alberto Rico Alvarino, Xiao Feng Wang, Liangping Ma, Peter Gaal, Iyab Issam Sakhnini
  • Publication number: 20230156636
    Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for PDSCH rate-matching in NTN systems. A UE may receive an indication of a subset of one or more SSB beams included in a set of SSB beams having one or more PDCCH resources reserved for potentially scheduling one or more SIBs associated with the set of SSB beams. The UE may further receive a PDSCH associated with resources that overlap with at least a portion of the one or more PDCCH resources associated with the indication of the subset of one or more SSB beams, and rate-match around the one or more PDCCH resources associated with the indication of the subset of one or more SSB beams for receiving the PDSCH.
    Type: Application
    Filed: November 17, 2021
    Publication date: May 18, 2023
    Inventors: Lianghai JI, Huilin XU, Liangping MA, Qiang WU, Jun MA, Mehmet Izzet GURELLI, Weimin DUAN, Karthik ANANTHA SWAMY