Patents by Inventor Tao Luo

Tao Luo 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: 20200252923
    Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently identifying a receive beam for performing a listen before talk (LBT) procedure in an attempt to gain access to a transmission opportunity (TxOP) in a shared radio frequency spectrum. In particular, a wireless device may select a receive beam that corresponds to one or more transmit beams to be used in a TxOP to perform an LBT procedure in an attempt to gain access to the TxOP. In one example, the wireless device may select a receive beam for performing an LBT procedure based on the energy of each of the transmit beams to be used in a TxOP. In another example, the wireless device may select a receive beam for performing an LBT procedure if the receive beam is quasi co-located with each of the transmit beams to be used in a TxOP.
    Type: Application
    Filed: January 17, 2020
    Publication date: August 6, 2020
    Inventors: Srinivas Yerramalli, Xiaoxia Zhang, Tao Luo, Arumugam Chendamarai Kannan, Vinay Chande, Makesh Pravin John Wilson, Sungwoo Park, Wooseok Nam
  • Publication number: 20200252977
    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify that the UE is configured to use a two-step random access channel (RACH) procedure. The two-step RACH procedure may include an uplink request message and a downlink response. The UE may transmit the uplink request message as part of the two-step RACH procedure, and the uplink request message may include a preamble portion that is one of a set of predefined sequences and a payload portion that includes a physical uplink shared channel waveform. The UE may receive the downlink response as part of the two-step RACH procedure and in response to the uplink request message.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Inventors: Xiaoxia Zhang, Srinivas Yerramalli, Jing Sun, Aleksandar Damnjanovic, Ozcan Ozturk, Tao Luo, Yongbin Wei
  • Publication number: 20200252891
    Abstract: Methods, systems, and devices for wireless communications are described that provide staggered synchronization signal blocks (SSBs) in frequency sub-bands for beamformed wireless communications. Transmissions of SSBs and control channel transmissions (e.g., remaining minimum system information (RMSI) physical downlink control channel (PDCCH) transmissions) may use multiple transmission beams in a beam sweeping procedure. The SSB transmissions may be transmitted using transmission beams that span one frequency sub-band of a number of available frequency sub-bands, and the control channel transmissions may use transmission beams that span two or more of the frequency sub-bands. The SSB beam sweeping procedure may be performed separately during staggered, non-overlapping time periods for each frequency sub-band of the number of frequency sub-bands. Each of the of SSBs may indicate a reference timing of the base station used to identify a set of resources (e.g.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 6, 2020
    Inventors: Arumugam Chendamarai Kannan, Vinay Chande, Xiaoxia Zhang, Tao Luo, Jing Sun, Makesh Pravin John Wilson
  • Publication number: 20200252925
    Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to transmission scheme management for common channels in new radio (NR). A method for wireless communications that may be performed by a user equipment (UE) is provided. The method generally includes receiving an indication from a base station (BS) of a type of beam management scheme used by the BS for at least one of: a current transmission or one or more subsequent transmissions; and decoding the at least one of: the current transmission or the one or more subsequent transmissions from the BS in accordance with the indication.
    Type: Application
    Filed: April 20, 2020
    Publication date: August 6, 2020
    Inventors: Wanshi CHEN, Tao LUO
  • Publication number: 20200252974
    Abstract: Certain aspects of the disclosure provide techniques for random access channel (RACH) power control, including for message (MSGA) transmission by a user equipment (UE) for two-step RACH procedure. Certain aspects provide a method for wireless communication generally including determining a transmit power for transmitting a first message to a base station (BS) as part of a two-step RACH procedure, the first message comprising a first part and a second part. Determining the transmit power comprises determining a first transmit power for transmitting the first part based on a first function having parameters including a power ramping counter and a power ramping step. Determining the transmit power further comprises determining a second transmit power for transmitting the second part based on a second function having parameters including the power ramping counter and the power ramping step. The method further includes incrementing the power ramping counter based on transmitting the first message.
    Type: Application
    Filed: January 28, 2020
    Publication date: August 6, 2020
    Inventors: Sony AKKARAKARAN, Xiaoxia ZHANG, Jing SUN, Tao LUO, Muhammad Nazmul ISLAM
  • Publication number: 20200252973
    Abstract: This disclosure provides systems, methods and apparatus for wireless communications that support fallback from a 2-step to a 4-step random access procedures. A user equipment (UE) may establish a connection with a base station using a random access procedure. The random access procedure may be a 2-step random access procedure and reduce a number of handover exchange messages. The 2-step random access procedure may include the UE transmitting, to the base station, a first random access message including a preamble and a payload. In some implementations, the base station may receive the preamble but fail to receive or decode the payload. The random access procedure may utilize the received preamble information instead of performing retransmission of the first random access message. The base station may transmit a second random access message to the UE indicating, explicitly or implicitly, a fallback to a 4-step random access procedure for connection establishment.
    Type: Application
    Filed: January 17, 2020
    Publication date: August 6, 2020
    Inventors: Xiaoxia Zhang, Jing Sun, Sony Akkarakaran, Muhammad Nazmul Islam, Tao Luo
  • Publication number: 20200252967
    Abstract: Methods, systems, and devices for wireless communications are described. Examples may include receiving, at a user equipment (UE) a random access channel (RACH) configuration message from a base station, where the message indicates a channel metric (e.g., received signal strength indicator (RSSI), reference signal received power (RSRP), reference signal received quality (RSRQ), a signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SINR), or the like) and a threshold associated with the channel metric. The, UE may measure a reference signal (e.g., synchronization signal block (SSB), channel state information reference signal (CSI-RS), or the like) and select a RACH procedure based on comparing the measured channel metric to the threshold. For example, the UE may select a two-step RACH procedure if the measured channel metric satisfies the threshold specified in the configuration.
    Type: Application
    Filed: January 24, 2020
    Publication date: August 6, 2020
    Inventors: Ozcan Ozturk, Xiaoxia Zhang, Tao Luo, Muhammad Nazmul Islam, Jing Sun, Sony Akkarakaran
  • Publication number: 20200252183
    Abstract: The present disclosure relates to signaling information in physical broadcast channel (PBCH) demodulation reference signals (DMRS). In one example, a network entity may transmit the signaling information carried by a DMRS in one or more resource elements of physical broadcast channel (PBCH) symbols within a bandwidth of a primary synchronization signal and a secondary synchronization signal of a synchronization signal block. In another example, a user equipment (UE) may receive the signaling information carried by the DMRS within one or more resource elements of PBCH symbols within a bandwidth of a primary synchronization signal and a secondary synchronization signal of a synchronization signal block on a broadcast channel from the network entity.
    Type: Application
    Filed: April 20, 2020
    Publication date: August 6, 2020
    Inventors: Hung LY, Tao Luo, Heechoon Lee
  • Publication number: 20200252108
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for providing quasi-colocation (QCL) signaling for reference signals (RS) and channels across scenarios involving multiple cells, such as coordinated multipoint (CoMP) scenarios in which multiple transmit receive points (TRPs) or integrated access and backhaul (IAB) nodes each have their own cell ID.
    Type: Application
    Filed: April 20, 2020
    Publication date: August 6, 2020
    Inventors: Makesh Pravin JOHN WILSON, Tao LUO, Jianghong LUO, Arumugam CHENDAMARAI KANNAN
  • Publication number: 20200252806
    Abstract: Methods, systems, and devices for wireless communications are described. In some systems, wireless devices operating in an unlicensed radio frequency spectrum band may perform directional listen-before-talk (LBT) procedures to gain access to a channel. In a beam-shrinking scheme for directional LBT, a wireless device may start an LBT procedure using a first beam (e.g., a wide beam). If the clear channel assessment (CCA) fails for the first beam (e.g., due to directional interference), the device may switch the LBT procedure to a second beam (e.g., a narrower beam). Depending on the direction of the interference source, the second beam may result in a successful LBT procedure. In a beam sweeping scheme for directional LBT, a wireless device may perform concurrent LBT over multiple narrow beams. If any beam of the set of beams detects frequent or continuous interference, the device may drop that beam from the concurrent LBT procedure.
    Type: Application
    Filed: January 16, 2020
    Publication date: August 6, 2020
    Inventors: Srinivas Yerramalli, Xiaoxia Zhang, Tao Luo, Arumugam Chandamarai Kannan, Vinay Chande
  • Patent number: 10736082
    Abstract: Aspects of the present disclosure provide techniques for informing devices of the use of transmit and receive beams in a beamforming communication system. An exemplary method includes determining a plurality of beam directions for a device to use in different transmission time intervals (TTIs) of a TTI burst, and sending a directional transmission to the device indicating at least one of the beam directions.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Jing Sun
  • Patent number: 10736045
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for uplink power control using communications systems operating according to new radio (NR) technologies. For example, a method for wireless communication by a base station includes providing power control parameters, to at least one user equipment (UE), for use in performing uplink transmit power control for one or more uplink transmissions sent using one or more uplink transmit beams, signaling the UE to set or reset one or more of the power control parameters, and transmitting one or more reference signals (RSs) using one or more downlink transmit beams, for the UE to measure for use in the uplink transmit power control.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Shengbo Chen, Tao Luo, Sumeeth Nagaraja, Sony Akkarakaran, Makesh Pravin John Wilson, Wooseok Nam, Kaushik Chakraborty, Juan Montojo
  • Patent number: 10736076
    Abstract: Certain aspects of the present disclosure relate to a methods and apparatus for wireless communication. In one aspect, a method of wireless communication comprises assigning, by an access point, an interval of time for transmission on an unlicensed communication spectrum to a LTE-U device, and broadcasting an anchor signal during the interval of time on the unlicensed communication spectrum, the anchor signal comprising a paging indication for the LTE-U device. In another aspect, a method of wireless communication comprises determining, by a LTE-U device, an interval of time for reception of a paging indication on an unlicensed communication spectrum and receiving an anchor signal during the interval of time on the unlicensed communication spectrum, the anchor signal comprising the paging indication.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Andrei Radulescu, Tao Luo, Chirag Patel
  • Patent number: 10736077
    Abstract: Certain aspects of the present disclosure provide techniques for conveying information regarding a window for system information transmissions. Certain aspects of the present disclosure provide techniques for conveying information regarding a window for transmitting paging downlink control information (DCI) or paging messages.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Bilal Sadiq, Sundar Subramanian, Navid Abedini, Haitong Sun, Tao Luo
  • Patent number: 10736093
    Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for strategically placing a sounding reference signal (SRS) within a slot to improve the decoding timeline. Aspects of the disclosure further relate to wireless communication systems configured to optimize the physical downlink control channel (PDCCH) search space within a slot to improve the decoding timeline. Features may also include placing the SRS near the end of the slot, such as after the uplink user data traffic and the corresponding uplink demodulation reference signal (DMRS). In addition, features may also include identifying the PDCCH search space within the slot based on at least a slot index of the slot. Other aspects, embodiments, and features are also claimed and described.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sony Akkarakaran, Tao Luo, Wanshi Chen, Hao Xu, Peter Gaal, Yi Huang, Renqiu Wang, Seyong Park
  • Patent number: 10735078
    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for operations with switching active bandwidth parts (BWPs), such as for radio link monitoring (RLM), beam failure recovery, random access, and/or other operations. As described herein, a UE may be configured with one or more sets of BWPs. The UE may determine/select the uplink and/or downlink BWP to use. For example, the UE can determine to use an active BWP or to switch to another BWP. The UE may use the BWP during operations, such as RLM, beam failure recovery, and/or random access, etc. for monitoring on the downlink and/or for transmitting on the uplink.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Hung Dinh Ly, Tao Luo, Sumeeth Nagaraja
  • Patent number: 10736099
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit or otherwise indicate a semi-static slot format configuration and a dynamic slot format configuration to a user equipment (UE). The UE may determine a slot format configuration based on the received semi-static and dynamic slot format configurations. In some cases, the UE may replace certain resources of the semi-static slot format configuration with resources from the dynamic slot format configuration depending on a certain embodiment. Additionally or alternatively, the base station may transmit an anchor slot configuration to the UE, which may indicate which resources of the semi-static slot format configuration can be overridden or replaced by the dynamic slot format configuration.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: August 4, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Heechoon Lee, Peter Gaal, Wanshi Chen, Tao Luo, Juan Montojo, Tingfang Ji
  • Patent number: 10736010
    Abstract: Certain aspects of the present disclosure provide techniques for supporting mobility management in a wireless communication system employing beams. A UE may receive, from a BS serving the UE, information regarding one or more reference beams and one or more event triggers associated with the one or more reference beams. The UE may detect one of the event triggers and may take one or more actions based, at least in part, on the detected event trigger.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: August 4, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Sony Akkarakaran, Makesh Pravin John Wilson
  • Publication number: 20200238760
    Abstract: The present disclosure relates to a four-proofing safety tire including a conductive tread rubber layer, a supporting rubber layer, a tire explosion-proof rubber layer and a memory chip, wherein the conductive tread rubber layer can be formed by embedding, in the tread, a belt of narrow conductive rubber penetrated all the way to the inner cap ply or can be formed by adding carbon nanotubes or graphene conductive metamaterial to the tread formulation; the supporting rubber layer is a layer of rubber affixed on the inner wall of the sidewall when the tire is molded, which has a cross section with the shape of half slice of a willow leaf; the tire explosion-proof rubber layer is an explosion-proof layer added on the outer side of the inner liner provided on the inside of the ground-engaging tread of the tire; the memory chip is a special chip structure implanted in the sidewall portion of the tire without affecting the performance of the tire.
    Type: Application
    Filed: January 17, 2018
    Publication date: July 30, 2020
    Inventors: Zhongjiang Wang, Yunfeng Du, Jiliang Luo, Weiming Ning, Dongdong Kong, Jian Ma, Tao Zheng, Jie Jiang, Kun Zhang
  • Publication number: 20200244340
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for signaling of UE intra/inter-panel beam switch latency using communications systems operating according to new radio (NR) technologies. For example, the method generally includes determining at least a first latency associated with a beam switch across at least first and second antenna array modules, wherein the first latency is greater than or equal to a second latency associated with a beam switch within the first or second antenna module, and signaling a second device an indication of when to assume the first latency for a beam switch at the first device.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Inventors: Yan ZHOU, Tao LUO, Valentin Alexandru GHEORGHIU, Ruhua HE