Patents by Inventor Tingfang Ji

Tingfang Ji 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: 10980022
    Abstract: Wireless communications systems and methods related to a coupled mode common uplink burst in Time Division Duplex (TDD) sub-frame structure are disclosed. Upon receiving a signal requesting a user to transmit a sounding reference signal (SRS) and a control channel within a common uplink (UL) burst in each sub-frame communicated between the user and a base station, the user transmits the common UL burst comprising the SRS coupled with the control channel spanning the same frequency bandwidth.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: April 13, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Wei Zeng, Joseph Binamira Soriaga, Alexandros Manolakos, Tingfang Ji
  • Patent number: 10980049
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine whether a physical uplink control channel (PUCCH) transmission is associated with a first type of service or a second type of service, wherein the second type of service is associated with a higher reliability or a lower latency than the first type of service. The UE may transmit the PUCCH transmission using a first set of resources when the PUCCH transmission is associated with the first type of service or using a second set of resources when the PUCCH transmission is associated with the second type of service. Numerous other aspects are provided.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: April 13, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Wei Yang, Jing Jiang, Yi Huang, Renqiu Wang, Wanshi Chen, Peter Gaal, Chih-Ping Li, Tingfang Ji
  • Publication number: 20210105124
    Abstract: Methods, systems, and devices for wireless communication are described. A device—such as a base station or user equipment (UE)—may transmit a demodulation reference signal (DMRS) including signaling information in addition to channel estimation information. To improve reception of the DMRS signaling information, the transmitting device may employ data protection techniques to the signaling information and modify a data payload transmitted in the physical data channel associated with the DMRS. In one aspect, the transmitting device may modify cyclic redundancy check (CRC) bits in the payload to include verification for the signaling information. In another aspect, the transmitting device may determine a scrambling code based on the signaling information, and may scramble the payload based on the scrambling code.
    Type: Application
    Filed: December 16, 2020
    Publication date: April 8, 2021
    Inventors: Hung Ly, Tingfang Ji, Sony Akkarakaran, Haitong Sun, Peter Gaal
  • Publication number: 20210105079
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may apply one or more spreading sequences to a set of modulation symbols of a data set to generate spread modulation symbols; apply a scrambling sequence to the spread modulation symbols to generate a set of scrambled symbols; and transmit a waveform based at least in part on the set of scrambled symbols. Numerous other aspects are provided.
    Type: Application
    Filed: February 13, 2019
    Publication date: April 8, 2021
    Inventors: Jing LEI, Renqiu WANG, Tingfang JI, Joseph Binamira SORIAGA, Yiqing CAO, Seyong PARK, Naga BHUSHAN, Wanshi CHEN, Peter GAAL, Jay Kumar SUNDARARAJAN, John Edward SMEE
  • Publication number: 20210105085
    Abstract: Aspects of the present disclosure provide techniques for enhanced transmission time interval (TTI) bundling design for machine type communications (MTC). A method for wireless communications by a wireless device is provided. The method generally includes determining a mapping of one or more uplink or downlink channels to one or more fixed bundling sizes, wherein each of the one or more fixed bundling sizes indicates a number of transmission time intervals (TTIs) over which a channel should be transmitted and processing transmission of the one or more uplink or downlink channels based on the mapping.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 8, 2021
    Inventors: Hao XU, Wanshi CHEN, Tingfang JI, Peter GAAL
  • Patent number: 10972992
    Abstract: Various aspects relate to flexible mobility for a user equipment (UE) based on supported mobility modes of a network and UE conditions. A network may support one or more of a downlink based mobility mode, an uplink based mobility mode, or a hybrid mobility mode for a connectivity state of a UE. A UE may determine a serving cell based on at least one downlink signal. The UE may determine based on the at least one downlink signal, a set of supported mobility modes for the serving cell, including at least one of a downlink based mobility mode, an uplink based mobility mode, or a hybrid based mobility mode. The UE may follow a mobility procedure based on a selected mobility mode from the determined set of supported mobility modes. Other aspects relate to a base station transmitting synchronization signals to support flexible mobility.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: April 6, 2021
    Assignee: Qualcomm Incorporated
    Inventors: Hung Ly, Haitong Sun, Tingfang Ji, Joseph Binamira Soriaga
  • Patent number: 10972925
    Abstract: Techniques are described for wireless communication. A first method includes measuring, by a first device, a condition of a wireless channel; and generating at least one channel side information feedback message based on the measured condition of the wireless channel. The at least one channel side information feedback message provides information on a relationship of a set of parameters, including a data rate parameter, an error probability parameter, and at least one of a deadline parameter or a transmission link parameter. A second method includes measuring, by a first device, interference on a wireless channel; identifying an interfering device for the wireless channel based on the measurement; and generating a channel side information feedback message based on the measured interference on the wireless channel. The channel side information feedback message indicates the interfering device for the wireless channel and a correlation of interference from the interfering device with time or frequency.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: April 6, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Tingfang Ji, John Edward Smee, Joseph Binamira Soriaga, Naga Bhushan, Kambiz Azarian Yazdi, Krishna Kiran Mukkavilli, Alexei Yurievitch Gorokhov, Peter Gaal
  • Patent number: 10973018
    Abstract: Transmission of user equipment (UE) specific control information within a resource allocation including resource blocks allocated for downlink transmissions to the UE is disclosed. Common control information may be provided in a first transmission time interval (TTI)-level control region, and UE-specific control information, specific to a particular UE, may be provided along with data in allocated downlink resources to the UE. A base station may identify a resource block (RB) for transmission of data to a UE along with UE-specific control information to be included in the RB. The control information may include, for example, parameters for use by the receiver in demodulating the RB. The base station may multiplex the control information with the data within the RB and transmit the RB and control information.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 6, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Peter Pui Lok Ang, Tao Luo, Tingfang Ji, Jing Jiang, Jamie Menjay Lin, Yang Yang
  • Patent number: 10972920
    Abstract: Methods and apparatus for performing reference signal (RS) metric measurements in different parts of a channel bandwidth are described. One example method generally includes receiving signaling indicating one or more frequency bands within an operating frequency band of a current serving cell for performing reference signal (RS) metric measurements, performing the measurements on the one or more frequency bands, and reporting the measurements.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 6, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Valentin Alexandru Gheorghiu, Masato Kitazoe, Brian Clarke Banister, Alexei Yurievitch Gorokhov, Tingfang Ji, Shivratna Giri Srinivasan, Amir Farajidana
  • Publication number: 20210099991
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a UE capability message to a base station, the UE capability message including an indication of a UE type, wherein the UE type is associated with at least one of a reduced bandwidth, or a reduced number of antennas, or a combination thereof for the UE. The UE may receive, based at least in part on the UE capability message, a downlink grant for downlink resources for a data transmission in accordance with a resource allocation scheme, wherein the resource allocation scheme is associated with the UE type and a supported bandwidth part of the UE. The UE may monitor a wireless channel based at least in part on the downlink grant. The UE may receive the data transmission based at least in part on the monitoring of the wireless channel.
    Type: Application
    Filed: September 24, 2020
    Publication date: April 1, 2021
    Inventors: Le Liu, Alberto Rico Alvarino, Huilin Xu, Seyedkianoush Hosseini, Peter Pui Lok Ang, Tingfang Ji, Krishna Kiran Mukkavilli
  • Publication number: 20210100003
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a UE capability message to a base station, the UE capability message including an indication of a UE type, the UE type associated with at least one of a reduced bandwidth, or a reduced number of antennas, or a combination thereof, for the UE. The UE may monitor, based at least in part on a control resource set that is based at least in part on the UE type, a control channel for a downlink grant for downlink resources. The UE may receive, based at least in part on the monitoring, a grant identifying the downlink resources for communicating with the base station. The UE may communicate with the base station using the identified downlink resources.
    Type: Application
    Filed: September 24, 2020
    Publication date: April 1, 2021
    Inventors: Le Liu, Alberto Rico Alvarino, Huilin Xu, Seyedkianoush Hosseini, Peter Pui Lok Ang, Tingfang Ji, Krishna Kiran Mukkavilli
  • Publication number: 20210099982
    Abstract: Aspects of the disclosure relate to wireless communication. In some aspects, a user equipment (UE) may receive an indicator, in a physical downlink control channel (PDCCH) payload, that indicates whether the PDCCH payload includes data or downlink control information (DCI) for obtaining the data, wherein the indicator is an initial state of a cyclic redundancy check that includes a predefined sequence of bits; and obtain at least one of the data or the DCI based at least in part on the indicator. Numerous other aspects are provided.
    Type: Application
    Filed: April 2, 2019
    Publication date: April 1, 2021
    Inventors: Changlong XU, Chao WEI, Liangming WU, Peng CHENG, Kai CHEN, Hao XU, Tingfang JI
  • Patent number: 10966242
    Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: March 30, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Shimman Arvind Patel, Wanshi Chen, Naga Bhushan, Yongbin Wei, Hao Xu, Aleksandar Damnjanovic, Tingfang Ji, Durga Prasad Malladi, Srinivas Yerramalli, Peter Gaal
  • Patent number: 10958304
    Abstract: Methods, systems, and devices for wireless communications are described. A UE may use different modulation schemes, or different modulators, for a single data stream. The set of modulators may be based on a linear combination of a function of encoded bits to be transmitted. In some cases, the UE may use a different permutation or interleaving of the function of bits with the same linear function to generate a different set of modulators. The UE may use a combination of any one or more of the described techniques for generating a set of modulators. Different modulators may be cyclically repeated over time. The UE may apply a device-specific scrambling sequence and transmit the modulated symbols on an uplink channel. The base station may use matched filters and an element-wise estimator (ESE) to compute log-likelihood ratios (LLRs) for each bit of each UE in a received signal.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: March 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Seyong Park, Pinar Sen, Naga Bhushan, Tingfang Ji
  • Patent number: 10958407
    Abstract: Methods, systems, and devices for wireless communication are described. A transmitting device may identify a duration of a slot used for communications with a receiving device. The transmitting device may determine that the communications with the receiving device comprises frequency division duplexing (FDD) communications. The transmitting device may transmit communications to the receiving device during a first portion of the slot, a duration of the first portion being less than the duration of the slot and the duration of the first portion is based at least in part on the determination that the communications comprise FDD communications. The transmitting device may select, based at least in part on the determination that the communications comprise FDD communications and that the communications are transmitted during the first portion of the slot, a hybrid automatic repeat request (HARQ) scheme to use during the communications.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: March 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Heechoon Lee, Tingfang Ji, Joseph Binamira Soriaga, Alexei Yurievitch Gorokhov, Peter Gaal, John Edward Smee, Naga Bhushan
  • Patent number: 10959188
    Abstract: A user equipment (UE) may transmit a control channel and a data channel using contiguous resource allocations of a portion of a slot. The control channel may be associated with control channel power spectral density (PSD) and the data channel may be associated with a data channel PSD. When a difference between the control channel PSD and the data channel PSD exceeds a maximum delta value, the UE may experience degraded performance as a result of tonal interference and/or the like. In some aspects, the UE may determine a control channel transmit power for the control channel and a data channel transmit power for the data channel. The control channel transmit power and the data channel transmit power may be determined such that the maximum delta value is not exceeded and that a threshold relating to a link budget is satisfied, thereby ensuring that performance is not degraded.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Renqiu Wang, Hao Xu, Wanshi Chen, Peter Gaal, Wei Zeng, Tingfang Ji, Amir Aminzadeh Gohari
  • Patent number: 10958300
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, when using resource spread multiple access with non-orthogonal multiple access, that a particular modulation scheme is enabled. The user equipment may process symbols using a set of processing sequences selected based at least in part on the particular modulation scheme such that the particular modulation scheme is preserved for the symbols. The user equipment may transmit the symbols based at least in part on processing the symbols using the set of processing sequences. Numerous other aspects are provided.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: March 23, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Seyong Park, Jing Lei, Renqiu Wang, Joseph Binamira Soriaga, Naga Bhushan, Tingfang Ji
  • Publication number: 20210084688
    Abstract: Aspects described herein relate to determining whether full duplex (FD) communications are configured during resources for communicating one or more messages of a random access procedure, where the FD communications comprising uplink communications and downlink communications occurring in a same frequency band, and responsive to the determining whether the FD communications are configured during the resources, transmitting the one or more messages of the random access procedure using the resources.
    Type: Application
    Filed: August 27, 2020
    Publication date: March 18, 2021
    Inventors: Hung Dinh LY, June NAMGOONG, Muhammad Sayed Khairy ABDELGHAFFAR, Krishna Kiran MUKKAVILLI, Tingfang JI, Huilin XU, Shimman Arvind PATEL, Wanshi CHEN
  • Patent number: 10952192
    Abstract: Aspects of the present disclosure provided techniques that may be applied in systems that utilize bundled transmissions from a base station (e.g., an eNodeB) to a user equipment (UE), when a user equipment (UE) is in a connected mode of operation. An exemplary method performed by a UE for processing a downlink control channel sent as a bundled transmission over a bundle of subframes, comprises determining when to start monitoring for the control channel; and monitoring for the control channel in a limited number of downlink subframes, based on the determination.
    Type: Grant
    Filed: July 28, 2014
    Date of Patent: March 16, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Hao Xu, Wanshi Chen, Peter Gaal, Tingfang Ji
  • Publication number: 20210076333
    Abstract: Power control in new radio (NR)-to-NR dual connectivity communications is disclosed. A UE, compatible for NR-to-NR dual connectivity, may receive a transmit power configuration and a power allocation configuration. The transmit power configuration identifies the designated reserved power for each of the cell groups participating in the dual connectivity communication. The power allocation configuration identifies to the UE whether to operate access to excess transmission power by either mode 1 rules, which may introduce phase discontinuity into ongoing transmissions, or mode 2 rules, which use a look-ahead functionality to trigger joint determination and allocation of transmission power among known uplink transmissions over a given transmission duration. After the determined transmission power allocation has been made, the UE transmits the dual connectivity transmissions according to the determined power.
    Type: Application
    Filed: November 23, 2020
    Publication date: March 11, 2021
    Inventors: PETER GAAL, Xiao Feng Wang, Wanshi Chen, Seyedkianoush Hosseini, Heechoon Lee, Tingfang Ji, Amir Aminzadeh Gohari