Patents by Inventor WEIMIN DUAN

WEIMIN DUAN 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: 20210367736
    Abstract: A method of providing positioning state information in a channel usable for conveying the positioning state information includes: obtaining a positioning state information resource allocation parameter; determining a positioning resource amount based on the positioning state information resource allocation parameter, the positioning resource amount being an amount of resources of the channel usable for conveying the positioning state information; and transmitting the positioning state information over the channel while occupying no more than the positioning resource amount of resources of the channel.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 25, 2021
    Inventors: Alexandros MANOLAKOS, Weimin DUAN, Wanshi CHEN
  • Publication number: 20210368298
    Abstract: Techniques are provided for time-domain processing of DL-PRS signals under certain conditions in which time-domain processing has a computational advantage over frequency-domain processing. Because of this, embodiments can provide positioning at a lower computational cost than positioning provided by traditional techniques utilizing only frequency-domain processing. This reduced computational cost can improve the battery life of mobile devices, ultimately resulting in a better user experience.
    Type: Application
    Filed: May 19, 2021
    Publication date: November 25, 2021
    Inventors: Guttorm Ringstad OPSHAUG, Weimin DUAN, Alexandros MANOLAKOS, Sony AKKARAKARAN, Charles Edward WHEATLEY
  • Publication number: 20210360572
    Abstract: In a positioning session for a user equipment (UE), one or more base stations may receive and derive positioning measurements from uplink (UL) transmission from the UE that include a physical resource block (PRB) interlaced waveform based on at least one of interlaced physical uplink control channel (PUCCH) resource blocks, interlaced physical uplink shared channel (PUSCH) RBs resource blocks, interlaced sounding reference signal (SRS), interlaced uplink (UL) positioning reference signal (PRS), or a combination thereof. The interlaced waveforms span a greater wavelength than if interlacing were not used, and an enhanced accuracy requirement for the positioning measurements based on the span may be used for the positioning measurements. The UL interlaced PRBs may be used for UL positioning measurements for combined downlink (DL) and UL positioning measurements.
    Type: Application
    Filed: May 4, 2021
    Publication date: November 18, 2021
    Inventors: Alexandros MANOLAKOS, Weimin Duan, Gokul Sridharan, Jay Kumar Sundararajan, Hwan Joon Kwon, Wanshi Chen, Krishna Kiran Mukkavilli
  • Publication number: 20210360370
    Abstract: In an embodiment, a first node (e.g., a UE or a BS) performs a channel response measurement on a reference signal for positioning (e.g., UL reference signal such as SRS for positioning, or a DL PRS). The first node determines, for each of a plurality of peaks detected within the channel response measurement, peak-specific information comprising at least peak magnitude data that is based on a peak magnitude relative to a reference value. The first node reports the peak-specific information for the plurality of peaks to a second node (e.g., a BS, UE, or LMF). The second node receives the peak-specific information, and determines a positioning estimate for a UE based on the peak-specific information.
    Type: Application
    Filed: May 13, 2021
    Publication date: November 18, 2021
    Inventors: Jay Kumar SUNDARARAJAN, Taesang YOO, Naga BHUSHAN, Alexandros MANOLAKOS, Weimin DUAN, Krishna Kiran MUKKAVILLI, Tingfang JI
  • Publication number: 20210360577
    Abstract: Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) performs at least one positioning measurement of at least one downlink positioning reference signal (DL-PRS) received from a transmission-reception point (TRP) during a positioning session, reports, to a positioning entity, a value of the at least one positioning measurement via low layer signaling, and determines a timestamp for the at least one positioning measurement relative to a reference point, wherein the timestamp comprises an amount of time between the reference point and a time at which the at least one positioning measurement is valid.
    Type: Application
    Filed: May 3, 2021
    Publication date: November 18, 2021
    Inventors: Alexandros MANOLAKOS, Weimin DUAN, Wanshi CHEN, Tingfang JI
  • Publication number: 20210360573
    Abstract: Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) performs at least one positioning procedure with at least one transmission-reception point (TRP), and transmits a positioning report for the at least one positioning procedure via first low layer signaling or both the first low layer signaling and second signaling different than the first low layer signaling.
    Type: Application
    Filed: May 5, 2021
    Publication date: November 18, 2021
    Inventors: Alexandros MANOLAKOS, Weimin DUAN, Wanshi CHEN, Tingfang JI
  • Publication number: 20210360461
    Abstract: Disclosed are techniques for reducing the overhead of low layer positioning reports. In an aspect, a user equipment (UE) performs at least one positioning measurement of at least one downlink positioning reference signal (DL-PRS) received from at least one transmission-reception point (TRP) during a positioning session, and reports, to a positioning entity via low layer signaling, a relative value of the at least one positioning measurement relative to an expected value of the at least one positioning measurement, wherein the relative value of the at least one positioning measurement is a difference between the expected value of the at least one positioning measurement and a measured value of the at least one positioning measurement.
    Type: Application
    Filed: May 11, 2021
    Publication date: November 18, 2021
    Inventors: Weimin DUAN, Alexandros MANOLAKOS, Tingfang JI, Wanshi CHEN
  • Publication number: 20210352605
    Abstract: In an aspect, a communications node (e.g., TRP or UE) obtains (e.g., measures) timing group delays associated with different positioning procedures to determine time drift information, and reports the time drift information to an external entity for position estimation.
    Type: Application
    Filed: April 30, 2021
    Publication date: November 11, 2021
    Inventors: Alexandros MANOLAKOS, Weimin DUAN, Sony AKKARAKARAN
  • Publication number: 20210321387
    Abstract: Techniques are provided for utilizing positioning reference signals (PRS) in full duplex scenarios. An example method for wireless communication by a user equipment (UE) includes receiving a positioning reference signal in a time slot, wherein the positioning reference signal spans a first frequency bandwidth, transmitting a signal in a second frequency bandwidth during the time slot, wherein the second frequency bandwidth includes frequencies within the first frequency bandwidth, and processing the positioning reference signal received in the first frequency bandwidth excluding the frequencies in the second frequency bandwidth.
    Type: Application
    Filed: March 15, 2021
    Publication date: October 14, 2021
    Inventors: Weimin DUAN, Alexandros MANOLAKOS, Seyedkianoush HOSSEINI, Muhammad Sayed Khairy ABDELGHAFFAR
  • Publication number: 20210314904
    Abstract: Disclosed are techniques for wireless communication. In an aspect, a UE obtains measurement data associated with at least one PRS. The UE transmits, to a BS in a first L1 or L2 PSI report opportunity, a first PSI report indicative of a first set of measurement values associated with the at least one PRS based on the measurement data. The UE further transmits, to the BS in a second L1 or L2 PSI report opportunity that is subsequent to the first L1 or L2 PSI report opportunity, a second PSI report that is indicative of a second set of measurement values associated with the at least one PRS based on the measurement data, the second set of measurement values being refined from the first set of measurement values.
    Type: Application
    Filed: January 26, 2021
    Publication date: October 7, 2021
    Inventors: Weimin DUAN, Alexandros MANOLAKOS, Krishna Kiran MUKKAVILLI, Wanshi CHEN, Tingfang JI, Naga BHUSHAN
  • Publication number: 20210282100
    Abstract: Techniques are provided for calibrating group delay for a low-tier UE by leveraging the relatively high accuracy of RTT positioning for a premium UE. This can enable online/in-field group delay calibration of low-tier UEs, allowing for low-tier UEs to be calibrated when needed. Depending on desired functionality, techniques for calibration may include the use of RTT measurements with a base station, or an RTT measurement between the low-tier UE and the premium UE.
    Type: Application
    Filed: August 19, 2020
    Publication date: September 9, 2021
    Inventors: Weimin DUAN, Alexandros MANOLAKOS, Krishna Kiran MUKKAVILLI
  • Publication number: 20210242913
    Abstract: A user equipment (UE) receives a maximum downlink (DL) Multiple-Input Multiple-Output (MIMO) layer configuration for DL communications, such as control signals or data signals, in one or more bandwidth parts (BWPs) and a positioning reference signal (PRS) configuration for receiving DL PRS. The UE receives DL PRS in an active BWP using a number of reception antennas based on, e.g., at least equal to, the maximum number of DL MIMO layers in the active bandwidth part. The UE may be configured to transmit uplink (UL) PRS, e.g., SRS for positioning purposes, using at least a maximum number of transmission antennas that is configured for communications purposes.
    Type: Application
    Filed: August 18, 2020
    Publication date: August 5, 2021
    Inventors: Alexandros MANOLAKOS, Weimin DUAN, Krishna Kiran MUKKAVILLI
  • Publication number: 20210194564
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive scheduling information that schedules a physical downlink shared channel (PDSCH) communication for the UE; and select a downlink beam for reception of the PDSCH communication from a set of usable downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols in which the PDSCH communication is scheduled. Numerous other aspects are provided.
    Type: Application
    Filed: May 18, 2020
    Publication date: June 24, 2021
    Inventors: Huilin XU, Alexandros MANOLAKOS, Weimin DUAN, June NAMGOONG, Muhammad Sayed Khairy ABDELGHAFFAR
  • Publication number: 20210143954
    Abstract: Wireless communications systems and methods related to determining a QCL for receiving a reference signal are provided. A user equipment (UE) determines a QCL configuration for receiving a reference signal during a first time period based on a transmit beam direction to be used for transmission during the first time period. The user equipment receives the reference signal using a first receive beam direction based on the QCL configuration while transmitting a first communication signal using the transmit beam direction in a common frequency band during the first time period.
    Type: Application
    Filed: November 11, 2020
    Publication date: May 13, 2021
    Inventors: Weimin Duan, Huilin Xu, Alexandros Manolakos, June Namgoong, Muhammad Sayed Khairy Abdelghaffar
  • Publication number: 20210136566
    Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for the establishment of a communication link between a base station and a user equipment (UE). The UE may have a spatial partial reciprocity capability. The UE may be configured to determine antenna cross-correlation information for at least a first subset of antenna elements in the UE. The cross-correlation information may include one or more correlation parameters (e.g., correlation coefficients), a correlation model, or both. The UE may transmit sounding reference signals for a second set of antenna elements in accordance with the spatial partial reciprocity capability. The UE may also transmit an indication of the cross-correlation information for at least the first subset of antenna elements of the UE. The base station may use such information to derive correlation parameters for the unsounded antennas and determine precoders for downlink communications.
    Type: Application
    Filed: September 15, 2020
    Publication date: May 6, 2021
    Inventors: Alexandros Manolakos, Weimin Duan, Muhammad Sayed Khairy Abdelghaffar, Pavan Kumar Vitthaladevuni, Krishna Kiran Mukkavilli
  • Publication number: 20210111775
    Abstract: Methods, systems, and devices for wireless communications are described. A communication device, which may be otherwise known as a user equipment (UE), may determine a capability relating to an antenna configuration associated with channel state information reporting. The UE may transmit a message including an indication of the capability, and receive a channel state information reference signal using the antenna configuration. The UE may transmit, based on the channel state information reference signal, a channel state information report in accordance with the antenna configuration associated with the channel state information reporting.
    Type: Application
    Filed: October 7, 2020
    Publication date: April 15, 2021
    Inventors: Muhammad Sayed Khairy Abdelghaffar, Alexandros Manolakos, Weimin Duan, Peter Pui Lok Ang
  • Publication number: 20210111847
    Abstract: A user equipment (UE) sends an indication supported combinations of sounding reference signal (SRS) resources, unsupported combinations of SRS resources, or compatible SRS resources to a base station. The base station selects one or more SRS resources for the UE from the SRS resources that are supported by the UE or are compatible for the UE. In some examples, the UE receives a configuration from the base station for multiple SRS resource sets. After configuring the UE with multiple SRS resource sets, the base station selects one of the SRS resources sets, and may indicate the selected SRS resource set to the UE. The UE transmits a physical uplink shared channel (PUSCH) to the base station using SRS resources from the selected SRS resource set.
    Type: Application
    Filed: October 13, 2020
    Publication date: April 15, 2021
    Inventors: Wei YANG, Weimin DUAN, Alexandros MANOLAKOS, Yi HUANG
  • Publication number: 20210112498
    Abstract: This disclosure provides methods, devices and systems for channel sounding for wireless communications. Some implementations more specifically relate to scheduling sounding reference signal (SRS) resource sets for wireless devices having more than 4 receive (RX) antenna ports. In some implementations, a base station may determine an antenna switching capability of a user equipment (UE). The antenna switching capability indicates a number of RX antenna ports of the UE. The base station schedules a number of SRS resource sets for the UE based at least in part on the number of RX antenna ports in excess of four. For example, the number of RX antenna ports may be equal to 8. As another example, the number of RX antenna ports may be equal to 6. The base station further receives, from the UE, uplink transmissions of one or more SRS resources for each of the scheduled SRS resource sets.
    Type: Application
    Filed: October 8, 2020
    Publication date: April 15, 2021
    Inventors: Weimin DUAN, Alexandros MANOLAKOS, Muhammad Sayed Khairy ABDELGHAFFAR, Pavan Kumar VITTHALADEVUNI, Krishna Kiran MUKKAVILLI, Runxin WANG
  • Publication number: 20210105116
    Abstract: Certain aspects of the present disclosure provide techniques for fast adaptation of transmission properties of sounding reference signal (SRS) resource sets. A method that may be performed by a user equipment (UE) includes receiving sounding reference signal (SRS) configuration information, configuring the UE with one or more SRS resource sets, wherein each of the one or more SRS resource sets comprises one or more SRS resources; receiving signaling comprising a field indicating which of the one or more SRS resources in the one or more SRS resource sets are active and which of the one or more SRS resources in the one or more SRS resources sets are inactive; and transmitting one or more SRSs using only the one or more SRS resources that are active.
    Type: Application
    Filed: September 17, 2020
    Publication date: April 8, 2021
    Inventors: Alexandros MANOLAKOS, Weimin DUAN, Muhammad Sayed Khairy ABDELGHAFFAR, Pavan Kumar VITTHALADEVUNI, Krishna Kiran MUKKAVILLI
  • Publication number: 20210105106
    Abstract: Methods, systems, and devices for wireless communications are described that provide for multiple instances of aperiodic tracking reference signals (TRSs) that use a same set of large-scale channel properties. If two or more aperiodic TRS transmissions are triggered by downlink control information from a base station with a same transmission configuration indicator (TCI) state, a UE that receives the two or more aperiodic TRS transmissions may measure the multiple instances of the aperiodic TRS transmissions assuming that the same large scale parameters or properties can be inferred from each of the aperiodic TRS transmissions. The UE may then update one or more time tracking parameters, frequency tracking parameters, or combinations thereof, based on the same large scale transmission parameters being used for the multiple instances of the aperiodic TRS transmissions.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 8, 2021
    Inventors: Weimin Duan, Alexandros Manolakos, Peter Gaal