Patents by Inventor Sumeeth Nagaraja

Sumeeth Nagaraja 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: 10880927
    Abstract: A node for wireless communication identifies a number of actually transmitted reference signals. The node identifies a number of available PRACH time-frequency resources and preamble indices in a time period. The node identifies a number of configured PRACH time-frequency resources or PRACH preamble indices per reference signal. The node determines that the available number of PRACH time-frequency resources or PRACH preamble indices within the time period is not an integer multiple of the product of the number of actually transmitted reference signals and the number of configured PRACH time-frequency resources or PRACH preamble indices per reference signal. The node maps the actually transmitted reference signals to the available PRACH time-frequency resources and preamble indices based on the identified information and determination.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: December 29, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Navid Abedini, Juergen Cezanne, Bilal Sadiq, Sundar Subramanian, Sumeeth Nagaraja
  • Patent number: 10880761
    Abstract: Aspects of the disclosure relate to beam failure recovery requests. In one example, a beam failure of a beam is detected, and a determination is made of which beam failure recovery resources to utilize for a beam failure recovery request based on a network configuration. The beam failure recovery request can be transmitted via beam failure recovery resources. In another example, a scheduling entity determines beam failure conditions associated with detecting a beam failure, and ascertains a network configuration for a scheduled entity that can include parameters associated with the beam failure conditions, as well as parameters associated with determining beam failure recovery resources. The network configuration can be transmitted to the scheduled entity to facilitate transmitting a beam failure recovery request. Other aspects and features are also claimed and described.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: December 29, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo
  • Patent number: 10873406
    Abstract: Techniques for performing reference signal measurement filtering in systems that support multi-beam operation are provided. A method for wireless communication by a base station (BS) includes determining at least one beam configuration for measuring reference signals transmitted from the apparatus, and signaling the beam configuration(s) to at least one user equipment (UE). A method for wireless communication by a UE includes receiving, from a BS, at least one beam configuration for measuring reference signals from the BS, and performing a measurement procedure for reference signals received from the BS based at least in part on the beam configuration(s).
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: December 22, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo
  • Patent number: 10873403
    Abstract: An apparatus capable of performing a local operation in a low-interference environment is desired. In an aspect, the apparatus may be a user equipment (UE). The UE transmits a local operation notification to a base station, the local operation notification indicating a local operation that is local to the UE. The UE receives, from the base station, a resource indicator indicating one or more resources available for the local operation. The UE performs the local operation using the one or more resources.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: December 22, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Kaushik Chakraborty, Tao Luo, Andrzej Partyka, Sumeeth Nagaraja, Sony Akkarakaran, Makesh Pravin John Wilson, Aitzaz Ahmad
  • Patent number: 10868588
    Abstract: A user equipment apparatus determines whether a transmission is received from a base station within a time window and skips measurement of a reference signal during a subsequent period, when a transmission is received from the base station within the time window. A base station apparatus configures a UE to monitor one or more reference signals associated with a beam pair link and transmits a first signal in a transmission to the UE. The base station determines whether the transmission is received at the UE within a time window and determines whether to transmit a reference signal, based on whether the transmission is received at the UE within the time window. Upon determining that the transmission was received at the UE, the base station may skip transmission of the reference signal or modify a time, a frequency, a power, and/or a reference signal offset for the reference signal.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: December 15, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Kaushik Chakraborty, Sony Akkarakaran, Makesh Pravin John Wilson, Shengbo Chen
  • Patent number: 10863366
    Abstract: Aspects of the present disclosure relate to receiver beamforming for serving and neighbor cell measurements. An exemplary method generally includes communicating with one or more base stations using a first beam type, initiating a transition to communicating with at least one of the one or more base stations using a second beam type in response to an indication of a trigger event, and communicating with the at least one of the one or more base stations using the second beam type.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: December 8, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Raghu Narayan Challa, Ruhua He, Arvind Vardarajan Santhanam, Yong Li, Muhammad Nazmul Islam, Bilal Sadiq
  • Publication number: 20200374688
    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) capable of supporting multiple antenna ports may determine that some combinations of antenna ports can be used simultaneously. The UE may make this determination by evaluating the relationships between the physical antennas and the transmit chains included in the UE. Upon determining that the combinations of antenna ports can be used simultaneously, the UE may send a message to a base station. The message may indicate whether two or more antenna ports can be used at the same time. The UE may communicate simultaneously over one or more antenna ports based on the scheduling information from the base station which takes into account the ability of the combination of antenna ports to be used concurrently.
    Type: Application
    Filed: June 1, 2020
    Publication date: November 26, 2020
    Inventors: Jay Kumar Sundararajan, Alexandros Manolakos, Naga Bhushan, Joseph Binamira Soriaga, Sumeeth Nagaraja
  • Patent number: 10848213
    Abstract: Certain aspects of the present disclosure provide techniques for assisting a UE in measuring reference signals in a wireless communication system using beams. A BS may transmit, to a UE, information regarding one or more measurement gaps for measuring one or more reference signals. The BS may transmit, to the UE, additional information regarding at least one of direction information associated with the one or more reference signals or rank indication to be used by the UE to measure the one or more reference signals during the one or more measurement gaps. A UE may perform corresponding operations.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: November 24, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Sumeeth Nagaraja, Ajay Gupta, Tao Luo
  • Publication number: 20200367223
    Abstract: Aspects of the present disclosure describe managing beams in wireless communications. A beam management event configuration indicating a type of at least one beam to measure in determining occurrence of a trigger condition for a beam management event can be received. A parameter of a signal received from one or more nodes can be measured, where the signal corresponds to the type of the at least one beam. The occurrence of the trigger condition for the beam management event can be determined based on the parameter of the signal. An indication of the occurrence of the trigger condition can be reported to the one or more nodes or a different node.
    Type: Application
    Filed: September 13, 2018
    Publication date: November 19, 2020
    Inventors: Peng CHENG, Masato KITAZOE, Tao LUO, Keiichi KUBOTA, Sumeeth NAGARAJA
  • Publication number: 20200367075
    Abstract: Aspects of the present disclosure relate to receiver beamforming for serving and neighbor cell measurements. An exemplary method generally includes communicating with one or more base stations using a first beam type, initiating a transition to communicating with at least one of the one or more base stations using a second beam type in response to an indication of a trigger event, and communicating with the at least one of the one or more base stations using the second beam type.
    Type: Application
    Filed: August 6, 2020
    Publication date: November 19, 2020
    Inventors: Sumeeth NAGARAJA, Raghu Narayan CHALLA, Ruhua HE, Arvind Vardarajan SANTHANAM, Yong LI, Muhammad Nazmul ISLAM, Bilal SADIQ, Tao LUO
  • Patent number: 10841149
    Abstract: A method, a computer-readable medium, and an apparatus are provided for wireless communication at a UE. The apparatus switches from a first, active BWP to a second, active BWP. Then, the apparatus measures a first radio link quality of a configured CORESET TCI or a beam failure detection RS upon switching to the second, active BWP. For example, the apparatus may switch the active BWP based on detecting an expiration of a BWP inactivity timer. The apparatus may then determine based on a threshold radio link quality whether to perform a measurement of a second radio link quality of a beam failure recovery candidate resource set or to continue to monitor the configured CORESET TCI in the second, active BWP.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: November 17, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Yan Zhou, Tao Luo, Alexandros Manolakos, Juan Montojo
  • Patent number: 10841970
    Abstract: Methods, systems, and devices for wireless communication are described. A base station may initiate a beam management procedure, including reference signal transmission to a user equipment (UE) and receive beam training. A base station may configure a UE to monitor a set of beams for reference signals. Based on the received reference signals, the UE may optionally select one or more transmit beams for wakeup signal reception, and may transmit an indication of the selected beams to the base station. The base station may transmit a wakeup signal over the originally configured or the UE-selected transmit beams to initiate wake-up procedure at the UE. The base station and UE may subsequently perform a refined beam management procedure, providing a refined reference signal transmission from the base station. Based on the received transmission, the UE may select a refined beam for downlink transmissions.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: November 17, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Muhammad Nazmul Islam, Juergen Cezanne, Ashwin Sampath, Vasanthan Raghavan, Jianghong Luo, Sundar Subramanian, Sumeeth Nagaraja
  • Patent number: 10841062
    Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems may support beamformed transmissions between devices (e.g., to improve coverage range). The beamformed transmissions may depend on discovery and maintenance of receive and transmit beams over which a given device may communicate with another device. Various receive and transmit beams for a given device may be compared using reference signals. As the number of devices attempting to access a cell increases, the number of reference signals to be transmitted may scale proportionally. Large numbers of reference signals may flood time-frequency resources of the system and/or require excessive processing at a mobile device. Scrambling sequences for reference signals may be employed to improve efficiency of resource usage. In aspects, the scrambling sequences may be implicitly determined (e.g., based on resources over which the access request was transmitted).
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: November 17, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Sony Akkarakaran, Makesh Pravin John Wilson, Xiao feng Wang, Juan Montojo, Shengbo Chen, Wooseok Nam
  • Patent number: 10834733
    Abstract: Aspects of the present disclosure provide a method, a computer-readable medium, and an apparatus for wireless communication, for example for reference signal measurements. An example method, performed by a user equipment, generally includes determining a duration for reference signal measurements of a network entity and beamforming one or more radio frequency chains in one or more directions for the reference signal measurements of the network entity during the duration.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: November 10, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Sony Akkarakaran, Makesh Pravin John Wilson, Kaushik Chakraborty, Xiao feng Wang, Shengbo Chen, Wooseok Nam
  • Patent number: 10827474
    Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may measure a first reference signal, associated with a frequency band of a long term evolution (LTE) system, and a second reference signal associated with a frequency band of a new radio (NR) system. The frequency band of the NR system may overlap the frequency band of the LTE system. The UE may determine first channel state feedback, associated with the frequency band of the LTE system, and second channel state feedback, associated with the frequency band of the NR system, based at least in part on the first reference signal and the second reference signal, respectively. The UE may report the first channel state feedback or the second channel state feedback in uplink control information (UCI). Other aspects are provided.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: November 3, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Makesh Pravin John Wilson, Xiao Feng Wang, Tao Luo, Sony Akkarakaran, Wooseok Nam, Sumeeth Nagaraja, Shengbo Chen, Kaushik Chakraborty
  • Publication number: 20200344631
    Abstract: Various techniques are proposed to enhance or expand the capabilities or usage of buffer status request (BSR) and scheduling request (SR) in new radio (NR) applications. In an implementation, techniques are proposed to extend the SR in long term evolution (LTE) baseline with additional information to help a base station (e.g., gNB) schedule faster and more efficiently. Moreover, a new BSR triggering condition is proposed to report new data based on particular events instead of being time-based. Modifications being proposed to both BSR and SR can be customized for different numerologies/transmission time intervals (TTIs). Modifications being proposed to SR can also be used to indicate a user equipment (UE) new beam selection after recovering from a beam failure.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Inventors: Linhai HE, Aleksandar DAMNJANOVIC, Gavin Bernard HORN, Aziz GHOLMIEH, Yue YANG, Tao LUO, Sumeeth NAGARAJA
  • Publication number: 20200344707
    Abstract: According to certain aspects of the present disclosure, indicating which neighbor cells are synchronous or asynchronous with a serving cell may allow a UE to determine whether it can derive neighbor cell RS timing based on the serving cell timing.
    Type: Application
    Filed: July 13, 2020
    Publication date: October 29, 2020
    Inventors: Sumeeth NAGARAJA, Tao LUO, Muhammad Nazmul ISLAM, Juergen CEZANNE, Chinmay VAZE, Raghu Narayan CHALLA, Alexei Yurievitch GOROKHOV
  • Patent number: 10812202
    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify resources associated with a beamformed signal, the identified resources being used by a user equipment (UE) for channel measurements of the beamformed signal, the beamformed signal being one of a plurality of beamformed signals. The base station may generate a signal indicating at least a portion of the identified resources and transmit the signal to the UE. The UE may receive the signal and perform a channel measurement of the beamformed signal using the indicated resources. The UE may transmit, to the base station, a measurement report comprising the channel measurement associated with the beamformed signal.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 20, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sumeeth Nagaraja, Tao Luo, Muhammad Nazmul Islam, Hung Dinh Ly
  • Patent number: 10805939
    Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for code rate selection for control channels. An exemplary method generally includes selecting, from a set of code rates, a code rate to be used to encode a stream of bits using a polar code, based on at least one of a downlink control channel aggregation size, an uplink control channel assignment, or a payload size of the stream of bits, encoding the stream of bits using the polar code and the selected code rate, and transmitting the encoded stream of bits.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: October 13, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Makesh Pravin John Wilson, Tao Luo, Sony Akkarakaran, Wooseok Nam, Sumeeth Nagaraja, Yang Yang
  • Patent number: 10805959
    Abstract: Certain aspects of the present disclosure provide techniques for random-access channel (RACH) communication. For example, certain aspects provide a method for providing an indication, via a first uplink transmission, of a preferred beam for a subsequent (uplink or downlink) transmission.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: October 13, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sony Akkarakaran, Makesh Pravin John Wilson, Tao Luo, Sumeeth Nagaraja