Patents by Inventor Ravikumar V. Pragada

Ravikumar V. Pragada 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: 11218978
    Abstract: A wireless transmit/receive unit (WTRU) receives first timing advances and first power control commands from a first eNodeB and second timing advances and second power control commands from a second eNodeB and transmits, to the first eNodeB, a first physical uplink control channel using a first uplink component carrier. The first physical uplink control channel has a first timing adjusted by the first timing advances but not by the second timing advances and a first power level adjusted by the first power control commands but not by the second power control commands. The WTRU transmits a second physical uplink control channel using a second uplink component carrier. The second physical uplink control channel has a second timing adjusted by the second timing advances but not by the first timing advances and a second power level adjusted by the second power control commands but not by the first power control commands.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: January 4, 2022
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Philip J. Pietraski, Rui Yang, Kai Li, Carl Wang, Tao Deng, Samian Kaur, Erdem Bala, Ravikumar V. Pragada
  • Publication number: 20210385879
    Abstract: Method, apparatus and systems are disclosed. In one representative embodiment, a method may be implemented by a wireless transmit/receive unit (WTRU) for communication via a network access point (NAP). The method may include the WTRU receiving from the NAP a set of preambles and corresponding propagation delay related thresholds and determining propagation delay related information associated with a distance between the WTRU and the NAP or a location in a coverage of the NAP. The method may further include selecting a subset of preambles from the set of preambles based on the determined propagation delay related information, randomly selecting a preamble from the selected subset of preambles, and sending the randomly selected preamble to the NAP.
    Type: Application
    Filed: October 22, 2019
    Publication date: December 9, 2021
    Inventors: Nagi Mahalingam, Anantharaman Balasubramanian, Ravikumar V. Pragada, Faris Alfarhan, Yugeswar Deenoo
  • Patent number: 11191037
    Abstract: Systems, methods, and instrumentalities are disclosed for power control for aerial wireless transmit receive units (WTRUs). Power control may be open loop and may be managed based on altitude. Open loop power control may be based partly on path loss estimation from neighboring cells and may be coordinated among interfering neighboring eNBs using path loss information. Dynamic power control may be driven by the WTRU. Reference signal transmissions by an eNB may use uplink resources for path loss estimation, and interference estimation may be based on uplink reference signals. Path loss estimation may be based on downlink reference signals. Dynamic blanking may be provided for Cell-specific Reference Signals (CRS), and random access (e.g. RACH) may be provided for aerial WTRUs.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: November 30, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Anantharaman Balasubramanian, Ravikumar V. Pragada
  • Patent number: 11178651
    Abstract: Systems, methods, and instrumentalities are disclosed for active interference management. Active interference management may be provided for designated data regions and/or superzones. UAV-specific or other designated data regions (e.g., with data zones) may enable dynamic inter-cell interference management and high reliability command & control for UAVs in interference prone in environments. Data zone/region specific control channel search space may support inter-cell interference cancellation. Aggregation N levels (e.g., during EPDCCH encoding) may be dependent on an interference level of a zone. Data zone specific reference signals (DS-RS) may enable UAVs connected to neighboring cells to estimate an interference channel per zone. Interference management may be provided during semi-persistent scheduling (SPS) transmissions. Reliability of Physical Downlink Control Channel (PDCCH) may be enhanced (EPDCCH), e.g., with interference assistance signaling.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: November 16, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Anantharaman Balasubramanian, Ravikumar V. Pragada
  • Publication number: 20210314112
    Abstract: Wireless transmit/receive units (WTRUs) may include unmanned aerial vehicles (UAVs). The WTRUs/UAVs may cooperate to exchange channel busy ratio (CBR) and/or CBR statistics of one or more (e.g., all) the carriers that the WTRUs/UAVs monitors with each other for carrier selection/carrier reselection. A network may provide one or more inputs on carrier selection. For example, a network may provide one or more inputs on carrier selection based on the congestion that the network infers (e.g., through the CBR measurements reported by the WTRUs/UAVs and/or through its own measurements). MAC/PHY layers may be configured to perform transmit adaptation during PDCP packet duplication. For example, the carrier aggregation capability of receivers may be considered to adapt the number of transmissions per carrier. Based on the carrier aggregation capability of the receivers, the number of transmissions at one or more (e.g., every) carriers may be optimized jointly across carriers.
    Type: Application
    Filed: August 7, 2019
    Publication date: October 7, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Anantharaman Balasubramanian, Nagi Mahalingam, Ravikumar V. Pragada, Benoit Pelletier
  • Patent number: 11140608
    Abstract: Methods and apparatuses for millimeter wave (mmW) beam acquisition are disclosed. An apparatus may include a processor and a transceiver configured to receive configuration information from a first network node using a first radio access technology (RAT). The configuration information may include an index associated with a beam of a second network node and timing information corresponding to the first RAT. The second network node may use a second RAT. The apparatus may be further configured to transmit a measurement report to the first network node that includes a measurement of the beam and index associated with the beam of the second network node.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: October 5, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Carl Wang, Yingxue K. Li, Onur Sahin, Philip J. Pietraski, Ravikumar V. Pragada, Gregg A. Charlton
  • Publication number: 20210297921
    Abstract: Systems, methods, and instrumentalities are disclosed for a wireless transmit/receive unit (WTRU) configured to receive a configuration defining a dedicated radio resource assignment for a travel path, wherein the dedicated radio resource assignment comprises dedicated resources assigned to the WTRU in a plurality of cells and specifies a time interval when the resources will be dedicated to the WTRU in each of the plurality of cells; determine a first time has been reached and utilize dedicated resources in a first cell based on reaching the first time; and determine a second time has been reached and utilize dedicated resources in a second cell based on reaching the second time.
    Type: Application
    Filed: February 1, 2018
    Publication date: September 23, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Ravikumar V. Pragada, Anantharaman Balasubramanian, Tanbir Haque
  • Patent number: 11122587
    Abstract: Methods and apparatuses are described herein that facilitate mesh network communication by a millimeter wave base stations (mBs) or WTRUs as nodes of a directional mesh network with other nodes of the directional mesh network. The mB or WTRU may include a directional antenna configured to transmit and receive signals in specific directions during the mesh network communication to define a directional mesh network. The mBs or WTRUs may transmit transmission request messages to neighbor nodes, wherein the transmission request messages include transmission slot allocation bitmaps and channel quality indicator information (CQI). Then response messages from the neighbor nodes may be received, wherein the response messages include receive slot allocation bitmaps and resource allocation decisions. The mBs or WTRUs may then update their transmission slot allocation bitmaps based on the received response messages and transmit data packets in specific directions based on the updated transmission slot allocation bitmap.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: September 14, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Arnab Roy, Yugeswar Deenoo, Ravikumar V. Pragada, Onur Sahin, Philip J. Pietraski
  • Patent number: 11108500
    Abstract: Latency reduction by fast forward (FF) in multi-hop communication device and/or systems is disclosed. Packets may be received and forwarded using a codeword (CW)-based approach with and/or without per-CW CRC. A FF session may have a flow ID and packets may have sequence numbers. Packets targeted for FF may be divided into independently decodable CWs that may be transmitted in the next hop, for example, as soon as the destination is determined without waiting for an entire packet's arrival and/or for CRC verification. Low latency (e.g. FF) traffic may be indicated. CW-based FF may be extensible for an e2e RAN path from a WTRU to the last access node in a RAN. Intermediate metrics, a packet CRC and/or a per-CW CRC may be utilized for data integrity. HARQ and/or CW retransmission procedures may be implemented between network nodes for error handling.
    Type: Grant
    Filed: July 1, 2017
    Date of Patent: August 31, 2021
    Assignee: IDAC Holdings, Inc.
    Inventors: Philip J. Pietraski, Arnab Roy, Kyle Jung-Lin Pan, Alpaslan Demir, Muhammad U. Fazili, William E. Lawton, Mohamed Abou El Seoud, Kevin T. Wanuga, Ravikumar V. Pragada
  • Publication number: 20210167899
    Abstract: Methods and apparatuses are described herein for providing Hybrid Automatic Repeat Request (HARQ) techniques for a non-terrestrial network. For example, a wireless transmit/receive unit (WTRU) may transmit, to a satellite base station (BS), uplink (UL) feedback that includes configuration information for redundancy versions (RVs) and cross redundancy versions (cRVs). The WTRU may receive one or more first RVs associated with a first transport block (TB). The WTRU may receive one or more second RVs associated with a second TB and at least one cross redundancy version (cRV) associated with the first TB and second TB. The cRV may include parity bits generated from both the first TB and second TB. If at least one of the first TB or the second TB is unsuccessfully decoded, the WTRU may decode the first TB and second TB jointly based on the at least one cRV.
    Type: Application
    Filed: April 3, 2019
    Publication date: June 3, 2021
    Applicant: IDAC Holdings, Inc.
    Inventors: Anantharaman BALASUBRAMANIAN, Nagi MAHALINGAM, Mihaela C. BELURI, Ravikumar V. PRAGADA
  • Publication number: 20210065566
    Abstract: An unmanned aerial vehicle (UAV) may detect a risk of collision with one or more objects in an airspace serviced by a mobile edge computing (MEC) node. The MEC node may provide an edge detect and avoid (edge-DAA) function for use in the airspace. The UAV may determine a first resolution advisory (RA) to be acted on in order to avoid the collision with the one or more objects based on a local DAA function within the UAV. The UAV may receive, from the MEC node, a second RA to be acted on in order to avoid the collision with the one or more objects based on the edge-DAA function. If the second RA can be acted onto avoid the collision with the one or more objects, the UAV may act on the second RA and may send a message to the MEC node with an acknowledgement.
    Type: Application
    Filed: January 29, 2019
    Publication date: March 4, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Jun Li, James Cistone, Ravikumar V. Pragada, Nagi Mahalingam, Michel Roy
  • Publication number: 20210037511
    Abstract: Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Inventors: Yugeswar Deenoo, Tao Deng, Kyle Jung-Lin Pan, Moon-il Lee, Ravikumar V. Pragada, Janet A. Stern-Berkowitz, Mihaela C. Beluri
  • Publication number: 20210029658
    Abstract: Methods, systems, and devices for addressing timing advance (TA) in non-terrestrial network communication is disclosed herein. A wireless transmit and receive unit (WTRU) may receive system information from a base station attached to an airborne or spaceborne vehicle that indicates a physical random access channel (PRACH) resource. The WTRU may determine a timing offset based on a plurality of information, such as the location information and the system information. The WTRU may transmit a preamble using the timing offset via the PRACH resource. The base station may receive the preamble and send a random access response (RAR) that includes, for example, a TA command. The WTRU may receive the RAR including the TA command and combine the timing offset with the TA command to determine an actual TA, after which the WTRU may use the actual TA for uplink transmissions.
    Type: Application
    Filed: April 3, 2019
    Publication date: January 28, 2021
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Nagi Mahalingam, Anantharaman Balasubramanian, Mihaela Beluri, Ravikumar V. Pragada, Mahmoud Taherzadeh Boroujeni, Shahrokh Nayeb Nazar, Seyed Mohsen Hosseinian, Frank La Sita
  • Publication number: 20210014847
    Abstract: A wireless transmit/receive unit (WTRU) (e.g., a millimeter WTRU (mWTRU)) may receive a first control channel using a first antenna pattern. The WTRU may receive a second control channel using a second antenna pattern. The WTRU may demodulate and decode the first control channel. The WTRU may demodulate and decode the second control channel. The WTRU may determine, using at least one of: the decoded first control channel or the second control channel, beam scheduling information associated with the WTRU and whether the WTRU is scheduled for an mmW segment. The WTRU may form a receive beam using the determined beam scheduling information. The WTRU receive the second control channel using the receive beam. The WTRU determine, by demodulating and decoding the second control channel, dynamic per-TTI scheduling information related to a data channel associated with the second control channel.
    Type: Application
    Filed: September 11, 2020
    Publication date: January 14, 2021
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Tao Deng, Yugeswar Deenoo, Philip J. Pietraski, Ravikumar V. Pragada
  • Publication number: 20200344837
    Abstract: A wireless transmit/receive unit (WTRU) may receive from a network resource allocation information for device to device (D2D) communication. The WTRU may select, from the received resource allocation information for a transmission time interval (TTI), resources for a D2D channel. The WTRU may transmit, with use of the selected resources, data directly to another WTRU.
    Type: Application
    Filed: May 12, 2020
    Publication date: October 29, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Ravikumar V. Pragada, Saad Ahmad, Balaji Raghothaman, Ulises Olvera-Hernandez, Zhuorong Deng, Pascal M. Adjakple, Gregory S. Sternberg, Guanzhou Wang, Alexander Reznik
  • Patent number: 10813085
    Abstract: Transmit and/or receive beamforming may be applied to the control channel transmission/reception, e.g., in mmW access link system design. Techniques to identify candidate control channel beams and/or their location in the subframe structure may provide for efficient WTRU operation. A framework for beam formed control channel design may support varying capabilities of mBs and/or WTRUs, and/or may support time and/or spatial domain multiplexing of control channel beams. For a multi-beam system, modifications to reference signal design may discover, identify, measure, and/or decode a control channel beam. Techniques may mitigate inter-beam interference. WTRU monitoring may consider beam search space, perhaps in addition to time and/or frequency search space. Enhancements to downlink control channel may support scheduling narrow data beams. Scheduling techniques may achieve high resource utilization, e.g., perhaps when large bandwidths are available and/or WTRUs may be spatially distributed.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: October 20, 2020
    Assignee: IDAC HOLDINGS, INC.
    Inventors: Yugeswar Deenoo, Tao Deng, Kyle Jung-Lin Pan, Moon-il Lee, Ravikumar V. Pragada, Janet A. Stern-Berkowitz, Mihaela C. Beluri
  • Publication number: 20200314752
    Abstract: A wireless transmit/receive unit (WTRU) may include one or more antennas and a first transceiver operatively coupled to the antennas. The one or more antennas and the first transceiver may be configured to receive a first signal from a network using zero energy from the WTRU. The one or more antennas and the first transceiver may be further configured to extract energy from the first signal. The first transceiver may be further configured to examine a separation between energy threshold events to decode an energy signature of the first signal. The first transceiver may be further configured to activate a second transceiver operatively coupled to the one or more antennas if the decoded energy signature matches a stored energy signature, wherein the second transceiver is powered by the WTRU. The one or more antennas and the second transceiver may be configured to receive a second signal from the network.
    Type: Application
    Filed: November 30, 2018
    Publication date: October 1, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Tanbir Haque, Ravikumar V. Pragada, Anantharaman Balasubramanian, Alpaslan Demir
  • Publication number: 20200304179
    Abstract: A method and apparatus are disclosed for communication in a Millimeter Wave Hotspot (mmH) backhaul system which uses mesh nodes. A mmH mesh node may receive a control signal which includes a total number of available control slots. The mesh node may determine the number of iterations of a resource scheduling mechanism that can be made during the time period of all available control slots, based on the number of neighbor nodes for the mesh node. Further, the mesh node may receive control slot information, including information about traffic queues and priorities. The mesh node may then perform resource scheduling using the resource scheduling mechanism based on the currently received control slot information and control slot information received in previous iterations of resource scheduling. The mesh node may also adjust a preamble based on a time between a last packet transmission and a current packet transmission to a neighboring node.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Steven FERRANTE, Arnab ROY, Philip J. PIETRASKI, Ravikumar V. PRAGADA
  • Patent number: 10785607
    Abstract: Systems, methods, and instrumentalities are disclosed for processing a multi-level transmission sent on a common set of resources using superposition coding, comprising determining a first group radio network temporary identifier (GRNTI), wherein the GRNTI is associated with a broadcast transmission to a plurality of wireless transmit/receive units (WTRUs), determining a second GRNTI, wherein the second GRNTI is associated with a transmission to a subset of the plurality of WTRUs that received the first GRNTI, receiving the multi-level transmission, wherein the multi-level transmission comprises a first level message and a second level message, decoding the first level message from the multi-level transmission using the first GRNTI and preconfigured control information, and decoding the second level message from the multi-level transmission using the second GRNTI.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: September 22, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Anantharaman Balasubramanian, Ravikumar V. Pragada
  • Patent number: 10779196
    Abstract: A station (STA) may include an antenna and a processor operatively coupled to the antenna. The antenna and the processor may be configured to receive a request message from an access point (AP). The request message may include identity information of one or more other STAs and an indication to perform measurements of the one or more other STAs. The antenna and the processor may be further configured to perform the measurements of the one or more STAs to determine a link metric associated with each STA of the one or more other STAs. The antenna and the processor may be further configured to send a reply message to the AP after the link metric associated with each STA of the one or more STAs is determined. The reply message may include results of the determination.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: September 15, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Arnab Roy, Yugeswar Deenoo, Ravikumar V. Pragada