Patents by Inventor Lakshmi R. Iyer

Lakshmi R. Iyer 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: 20200404617
    Abstract: A first apparatus detecting, from a second apparatus, one or more swept downlink beams, wherein each swept downlink beam comprises a synchronization signal block; making a measurement of a signal contained within the synchronization signal block of each detected swept downlink beam; decoding a message contained within the synchronization signal block of each detected swept downlink beam; selecting, based on the measurements and decoded message, a synchronization signal block; determine, based on the selected synchronization signal block, a paging block; detecting, within the paging block, a paging indication; and receiving, based on the paging indication, a paging message.
    Type: Application
    Filed: February 2, 2018
    Publication date: December 24, 2020
    Inventors: Joseph M. MURRAY, Pascal M. ADJAKPLE, Allan Y. TSAI, Qing LI, Lakshmi R. IYER, Wei CHEN, Guodong ZHANG, Yifan LI, Mohamed AWADIN
  • Patent number: 10868653
    Abstract: Flexibly configured containers consisting of resources within time-frequency blocks may be used to support multiple numerologies in new radio architectures. Uplink control may be defined in resources within a container, or in dedicated resources, by various nodes. Sounding reference signal resources may be dynamically configured for each numerology. The sequence length may be adapted, as well as the time domain location of symbols. Time, frequency, and orthogonal resources may be allocated via a downlink control channel or a radio resource control. Sounding reference signals may be pre-coded, and pre-coding weights may be based on a codebook or non-codebook approaches, e.g., via a radio resource control or a downlink RRC or DL control channel. Pre-coded sounding reference signals may be adapted to user equipment antenna configuration. Further, NR-SRS may be used as UL demodulation RS (DM-RS).
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: December 15, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Lakshmi R. Iyer, Guodong Zhang, Qian Zhang, Allan Y. Tsai, Joseph M. Murray, Pascal M. Adjakple, Qing Li, Tianyi Xu, Wei Chen, Ahmed ElSamadouny, Salman Khan, Yifan Li
  • Publication number: 20200382189
    Abstract: Multiple mobility sets are maintained for nodes of radio networks. The sets comprise information such as: transmit and receive point identities; cell identities; beam identities; frequency channels; channel bandwidth; and black lists. The sets may be defined at different levels, such as network and physical (PHY) level. A network mobility set, e.g., a new-radio (NR) mobility set may, be determined by the gNB, the cell, the UE, or another device. Multiple radio access network nodes and UEs may exchange mobility set information to achieve a distributed mobility solution. A UE may monitor its orientation relative to a TRP, e.g., via use of an onboard MEMS gyroscope, and alter its beamforming parameters in response to changes in orientation and/or changes in TRP connection strength. Cell selection and reselection for beam based networks may use Single Frequency Network (SFN) broadcast of initial access signals without beam sweeping.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 3, 2020
    Inventors: Wei Chen, Pascal Adjakple, Joseph M. Murray, Qing Li, Qian Zhang, Lakshmi R. Iyer, Tianyi Xu, Guodong Zhang, Allan Tsai
  • Patent number: 10849166
    Abstract: The present application is at leasted directed to an apparatus including a non-transitory memory including instructions to perform random access in a beam sweeping network having a cell. The network includes a downlink sweeping subframe, an uplink sweeping subframe and a regular sweeping subframe. The apparatus also includes a processor operably coupled to the non-transitory memory. The processor is configured to execute the instructions of selecting an optimal downlink transmission beam transmitted by the cell during the downlink sweeping subframe. The processor is also configured to execute the instructions of determining an optimal downlink reception beam from the optimal downlink transmission beam. The processor is further configured to execute the instructions of determining a random access preamble and a physical random access channel (PRACH) resource via resource selection from the optimal downlink transmission beam.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: November 24, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Joseph M. Murray, Pascal M. Adjakple, Wei Chen, Lakshmi R. Iyer, Qian (Emily) Zhang, Allan Y. Tsai, Guodong Zhang, Qing Li
  • Patent number: 10840982
    Abstract: The present application is at least directed to an apparatus on a network including a non-transitory memory including instructions stored thereon for beamforming training during an interval in the network. The apparatus also includes a processor, operably coupled to the non-transitory memory, capable of executing the instructions of receiving, from a new radio node, a beamforming training signal and beam identification for each of plural beams during the interval. The processor is also configured to execute the instructions of determining an optimal transmission beam of the new radio node based on the beamforming training signals of the plural beams. The processor is further configured to execute the instructions of transmitting, to the new radio node, a signal including a beam identification of the optimal transmission beam and an identification of the apparatus during the interval.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: November 17, 2020
    Assignee: Convidia Wireless, LLC
    Inventors: Guodong Zhang, Allan Y. Tsai, Qing Li, Pascal M. Adjakple, Lakshmi R. Iyer, Wei Chen, Joseph M. Murray
  • Patent number: 10812238
    Abstract: It is recognized herein that current LTE reference signals may be inadequate for future cellular (e.g., New Radio) systems. Configurable reference signals are described herein. The configurable reference signals can support mixed numerologies and different reference signal (RS) functions. Further, reference signals can be configured so as to support beam sweeping and beamforming training.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 20, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Qian Zhang, Qing Li, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Tianyi Xu, Pascal M. Adjakple, Ahmed Elsamadouny, Salman Khan, Yifan Li
  • Patent number: 10804989
    Abstract: Multiple mobility sets are maintained for nodes of radio networks. The sets comprise information such as: transmit and receive point identities; cell identities; beam identities; frequency channels; channel bandwidth; and black lists. The sets may be defined at different levels, such as network and physical (PHY) level. A network mobility set, e.g., a new-radio (NR) mobility set may, be determined by the gNB, the cell, the UE, or another device. Multiple radio access network nodes and UEs may exchange mobility set information to achieve a distributed mobility solution. A UE may monitor its orientation relative to a TRP, e.g., via use of an onboard MEMS gyroscope, and alter its beamforming parameters in response to changes in orientation and/or changes in TRP connection strength. Cell selection and reselection for beam based networks may use Single Frequency Network (SFN) broadcast of initial access signals without beam sweeping.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: October 13, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Wei Chen, Pascal M. Adjakple, Joseph M. Murray, Qing Li, Qian Zhang, Lakshmi R. Iyer, Tianyi Xu, Guodong Zhang, Allan Y. Tsai
  • Publication number: 20200322816
    Abstract: It is recognized herein that as the number of transmit antennas in cellular systems (e.g., NR or 5G systems) increase, the Channel State information (CSI) feedback overhead may increase to unacceptable levels, and the current CSI feedback might not support beamforming training for NR. Embodiments described herein provide an enhanced and more efficient design for Channel State Information feedback as compared to current approaches.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 8, 2020
    Inventors: Tianyi Xu, Qian Zhang, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Qing Li
  • Patent number: 10791531
    Abstract: The present application is directed to an apparatus for wireless communication. The apparatus includes a non-transitory memory including instructions stored thereon for performing the wireless communication. The apparatus also includes a processor, operably coupled to the non-transitory memory, capable of executing an instruction of receiving a beam sweeping block carrying downlink initial access signals including a first synchronization signal, a second synchronization signal, a beam reference signal and a PBCH monitoring transmission of a downlink sweeping subframe. The processor is capable of also executing the instruction of determining, based on the downlink initial access signals, an identity of the beam sweeping block associated with the downlink initial access signal. A part of the identity of the beam sweeping block is associated with the beam reference signal. The present application is also directed to a method for performing wireless communication.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: September 29, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Allan Y. Tsai, Lakshmi R. Iyer, Guodong Zhang, Joseph M. Murray, Qing Li, Wei Chen, Pascal M. Adjakple, Tianyi Xu
  • Publication number: 20200287678
    Abstract: In NR, a slot structure of a UE may be dynamic due the number of symbols of PDCCH and whether the slot has UL data, among other considerations. Additionally, to support multi-TRP/multi-panel/multi-BWP operation, a UE may be configured with multiple TRSs, and when a UE needs to receive multiple TRSs in the same slot, efficient signaling of the TRSs is important because of the high overhead involved. During a transmission, a UE may need to do beam switching when there is a beam failure, but existing systems do not have mechanisms for the UE to synchronize time and frequency with a new beam. Further, when a UE switches to a new beam, the effect on scheduled TRS transmission for old beams is unclear. Fine frequency and time tracking may also be required during an initial access procedure. Existing NR systems do not address how a UE may perform time and frequency tracking during an initial access procedure. Additionally, URLLC data may need to be transmitted to a UE immediately in an NR system.
    Type: Application
    Filed: September 28, 2018
    Publication date: September 10, 2020
    Inventors: Yifan LI, Lakshmi R. IYER, Joseph M. MURRAY, Allan Y. TSAI, Guodong ZHANG, Qing LI
  • Publication number: 20200267696
    Abstract: Methods and systems are disclosed for resource allocation for Grant-free Uplink (UL) transmissions, such as resource allocation via RRC signaling and Resource allocation via LI signaling, and for procedures associated with Grant-free UL transmission, such as for Grant-free operations with RRC signaling and Grant-free operations with PHY signaling.
    Type: Application
    Filed: August 9, 2018
    Publication date: August 20, 2020
    Inventors: Qing LI, Lakshmi R. IYER, Allan Y. TSAI, Guodong ZHANG
  • Publication number: 20200267753
    Abstract: Disclosed herein are new radio (NR) Data link architecture options including, for example, NR radio bearer models, NR logical channel models, and MAC and HARQ models. Further described are packet flows mapping to data radio bearers (DRBs), and a new flow encapsulation protocol in the user plane. In some embodiments, DRBs with different quality of service (QoS) are pre-established, but not activated. This allows a given user equipment (UE) to use these DRBs for packet data network (PDN) flows without a large overhead. Pre-established DRBs can be an extension to default bearer concept with the decision of pre-establishment of DRBs based on UE capability, subscription profile, operation policy, installed apps, etc.
    Type: Application
    Filed: October 19, 2017
    Publication date: August 20, 2020
    Inventors: Pascal M. ADJAKPLE, Joseph M. MURRAY, Guodong ZHANG, Lakshmi R. IYER, Wei CHEN, Stephen E. TERRY
  • Publication number: 20200259588
    Abstract: PBCH design may affect timing indication in a wireless network and polar code interleaver design, among other things. Mechanisms may indicate half frame timing though de-modulation reference signal sequence initialization, de-modulation reference signal mapping order, or de-modulation reference signal resource element location. The payload of the PBCH comprises a master information block (MIB), which payload is scrambled and encoded using a polar code. After rate matching and interleaving of the polar codeword, second scrambling is applied and the data is modulated.
    Type: Application
    Filed: August 8, 2018
    Publication date: August 13, 2020
    Inventors: Lakshmi R. IYER, Allan Y. TSAI, Qing LI, Joseph M. MURRAY
  • Publication number: 20200252976
    Abstract: The present application is at leasted directed to an apparatus including a non-transitory memory including instructions to perform random access in a beam sweeping network having a cell. The network includes a downlink sweeping subframe, an uplink sweeping subframe and a regular sweeping subframe. The apparatus also includes a processor operably coupled to the non-transitory memory. The processor is configured to execute the instructions of selecting an optimal downlink transmission beam transmitted by the cell during the downlink sweeping subframe. The processor is also configured to execute the instructions of determining an optimal downlink reception beam from the optimal downlink transmission beam. The processor is further configured to execute the instructions of determining a random access preamble and a physical random access channel (PRACH) resource via resource selection from the optimal downlink transmission beam.
    Type: Application
    Filed: March 4, 2020
    Publication date: August 6, 2020
    Inventors: Joseph M. Murray, Pascal M. Adjakple, Wei CHEN, Lakshmi R. Iyer, Qian (Emily) Zhang, Allan Y. Tsai, Guodong Zhang, Qing Li
  • Patent number: 10735980
    Abstract: It is recognized herein that as the number of transmit antennas in cellular systems (e.g., NR or 5G systems) increase, the Channel State information (CSI) feedback overhead may increase to unacceptable levels, and the current CSI feedback might not support beamforming training for NR. Embodiments described herein provide an enhanced and more efficient design for Channel State Information feedback as compared to current approaches.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: August 4, 2020
    Assignee: Convida Wireless, LLC
    Inventors: Tianyi Xu, Qian Zhang, Allan Y. Tsai, Guodong Zhang, Lakshmi R. Iyer, Qing Li
  • Publication number: 20200245395
    Abstract: Embodiments described herein include DRX operations that address impacts of beamforming to current DRX operations. It is recognized herein that the new NR-PDCCH may affect the downlink control channel monitoring in DRX operations. DRX embodiments described herein also address the impact of new NR-PDCCH to DRX operations. It is further recognized herein that, in NR, multiple DRX configurations may be supported, and L1/2 signaling (such as MAC CE based) can be used for dynamic DRX configuration switching. Embodiments described herein include signaling and other mechanisms that support multiple DRX configurations, and switching between multiple configurations. Embodiments described herein also include DRX operations that address the impact of HARQ design in NR to DRX operations. Embodiments described herein further include DRX operations that address the impact of multiple SR configurations in NR to DRX operation.
    Type: Application
    Filed: August 10, 2018
    Publication date: July 30, 2020
    Inventors: Guodong ZHANG, Pascal M. ADJAKPLE, Lakshmi R. IYER, Stephen E. TERRY
  • Publication number: 20200221429
    Abstract: Downlink Control Information (DCI) may be expanded, or enhanced, to allow nodes such as UEs, eNBs, NR-nodes, gNBs, and TRPs in M2M, IoT, WoT networks to coordinate activities on PHY, MAC, and RRC layers. For example, DCI fields may be added or enhanced to include, for example, information regarding time resource allocation, frequency resource allocation, mini-slot allocation, and or Code Block Group (CBG) transmission. Such information, or similar information, may be used in operations such as mini-slot operations, Code Block Group (CBG) transmission, group common Physical Downlink Control Channel (PDCCH), grant-free and grant-less operations, response to Beam Failure Recovery Request (BFRR), UL Transmit (TX) beam change, Quasi-Co-Location (QCL) operations, aperiodic CSI-RS transmission and interference measurement, Band Width Part (BWP) operations, and Multi-Transmission and Reception Point (TRP)/Multi-Panel.
    Type: Application
    Filed: September 7, 2018
    Publication date: July 9, 2020
    Inventors: Qing LI, Guodong ZHANG, Yifan LI, Allan Y. TSAI, Lakshmi R. IYER
  • Publication number: 20200221480
    Abstract: Current approaches to transmitting uplink data in a network often require resources to be granted. In an example, a node or apparatus may configure a plurality of devices to operate in a grant-less mode in accordance with a respective grant-less access allocation, such that, when the plurality of devices transmit messages uplink in the network, the messages are transmitted using frequency resources defined by the respective grant-less access allocation, and the plurality of devices transmit the messages without being granted access to transmit the messages, so as to operate in the grant-less mode.
    Type: Application
    Filed: March 20, 2020
    Publication date: July 9, 2020
    Inventors: Qing Li, Guodong Zhang, Pascal M. Adjakple, Lakshmi R. Iyer, Allan Y. Tsai, Qian Zhang, Wei Chen, Joseph M. Murray, Tianyi Xu
  • Publication number: 20200205156
    Abstract: Portions of LTE time-frequency resources may need to be configured and signaled while NR resources may need to be addressed when LTE and NR share the same carrier on Uplink (UL), Downlink (DL), or both. Further, a UE may need to select a UL carrier frequency. A UL carrier may need to be selected in order to perform NR operation in idle mode, Radio Resource Control (RRC) Inactive mode, or RRC Connected mode. Multi-connectivity across multiple RATs when a UE is capable of operating simultaneously on more than one RAT, e.g., NR and LTE, NR and WLAN, and/or NR, LTE and WLAN, is also described herein.
    Type: Application
    Filed: June 26, 2018
    Publication date: June 25, 2020
    Inventors: Pascal M. ADJAKPLE, Qing LI, Joseph M. MURRAY, Guodong ZHANG, Lakshmi R. IYER
  • Publication number: 20200205085
    Abstract: Methods and systems for uplink transmit power control are disclosed. In a first aspect, methods and systems are disclosed for beam specific uplink transmit power control. In a second aspect, methods and systems are disclosed for uplink transmit power control for a user equipment at an idle or an inactive state. In a third aspect, methods and systems are disclosed for uplink transmit power control for dynamic blocking. In a fourth aspect, methods and systems are disclosed for uplink transmit power control using mixed numerologies and priorities.
    Type: Application
    Filed: June 15, 2018
    Publication date: June 25, 2020
    Inventors: Qing LI, Guodong ZHANG, Lakshmi R. IYER, Allan Y. TSAI, Yifan LI