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).
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Publication number: 20170339621Abstract: Methods and apparatus for millimeter wave (mmW) beam acquisition are disclosed. An apparatus includes a transmitter configured to transmit millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system to a base station a receiver and a processor. The receiver receives a list of candidate mmW base stations (mB) including mmW acquisition start timing information from the base station, and the processor calculates correlation values around the received mmW acquisition start timing information for the mBs in the list.Type: ApplicationFiled: August 7, 2017Publication date: November 23, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Carl Wang, Yingxue K. Li, Onur Sahin, Philip J. Pietraski, Ravikumar V. Pragada, Gregg A. Charlton
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Patent number: 9801232Abstract: Systems, methods, and instrumentalities are provided to implement a method for controlling discontinuous reception (DRX). A wireless transmit/receive unit (WTRU) may enter into a DRX state on a first cell layer. The WTRU may transmit, on a second cell layer, a DRX indication of the first cell layer. The WTRU may receive, on the second cell layer, a deactivation signal corresponding to the first cell layer. The WTRU may deactivate, based on the deactivation signal received on the second cell layer, the first cell layer. The WTRU may receive, on the second cell layer, an activation signal corresponding to the first, cell layer. The WTRU, based on the activation signal, may activate the first cell layer.Type: GrantFiled: April 15, 2014Date of Patent: October 24, 2017Assignee: IDAC Holdings, Inc.Inventors: Yugeswar Deenoo, Samian Kaur, Ravikumar V. Pragada, Stephen E. Terry
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Patent number: 9788227Abstract: Methods and apparatuses are described. A method of configuring a Radio Resource Control (RRC)_Connected wireless transmit/receive unit (WTRU) for wireless local area network (WLAN) cell measurement includes receiving, by the WTRU, an RRCConnectionReconfiguration message. The RRCConnectionReconfiguration message includes a measurement configuration that includes at least one WLAN measurement object on which the WTRU is to perform measurement and at least one measurement reporting configuration including at least an indication that measurement reporting is to be at least one of periodic and event-triggered. At least one measurement is performed on the at least one WLAN measurement object. A measurement report is provided based on the at least one measurement reporting configuration.Type: GrantFiled: March 21, 2016Date of Patent: October 10, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Ravikumar V. Pragada, Samian Kaur, Douglas R. Castor, Philip J. Pietraski, Arnab Roy
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Patent number: 9781738Abstract: A method and apparatus are disclosed for establishing a low latency millimeter wave (mmW) backhaul connection. A base station may receive a mmW relay schedule from an evolved Node B (eNB) within one Long Term Evolution (LTE) scheduling interval. The base station may decode the mmW relay schedule, and initialize a mmW radio transmission resource according to the mmW relay schedule. The base station may receive a data packet from a second base station in a mmW transmission time interval (TTI) based on the mmW relay schedule using the initialized mmW radio transmission resource, and may transmit the data packet to a third base station based on the mmW relay schedule using the initialized mmW radio transmission resource. The transmitting may begin before the reception of the data packet is complete.Type: GrantFiled: February 6, 2014Date of Patent: October 3, 2017Assignee: IDAC Holdings, Inc.Inventors: Philip J. Pietraski, Tao Deng, Onur Sahin, Ravikumar V. Pragada
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Publication number: 20170273036Abstract: 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: ApplicationFiled: June 2, 2017Publication date: September 21, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Philip J. Pietraski, Rui Yang, Kai Li, Carl Wang, Tao Deng, Samian Kaur, Erdem Bala, Ravikumar V. Pragada
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Patent number: 9763179Abstract: A method and apparatus are described for supporting a two-stage device-to-device (D2D) discovery using a D2D interworking function (IWF). A D2D IWF component may be configured to perform mapping between an application running on an application server and a third generation partnership project (3GPP) network, and provide a set of application programming interfaces (APIs) to allow discovery to be provided as a service to D2D applications. An application identifier may be mapped to a 3GPP identifier. Further, a method and apparatus are described for performing client-server discovery. A first wireless transmit/receive unit (WTRU) may be configured for a listen-only operation, and a second WTRU may be configured to transmit beacons. The first and second WTRUs may perform a radio access network (RAN) discovery procedure at an access stratum (AS) layer. A method and apparatus for performing charging for D2D service using a D2D IWF are also described.Type: GrantFiled: April 26, 2013Date of Patent: September 12, 2017Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Ravikumar V. Pragada, Saad Ahmad, Balaji Raghothaman, Samian J. Kaur, Pascal M. Adjakple, Ulises Olvera-Hernandez, Zhuorong Deng, Kiran K. Vanganuru, Gregory S. Sternberg, Guanzhou Wang, Michael F. Starsinic, Alexander Reznik, Juan Carlos Zuniga, Eldad M. Zeira
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Patent number: 9730138Abstract: Methods and apparatus for millimeter wave (mmW) beam acquisition are disclosed. An apparatus includes a transmitter configured to transmit millimeter wave (mmW) WTRU (mmW WTRU) information over a cellular system to a base station a receiver and a processor. The receiver receives a list of candidate mmW base stations (mB) including mmW acquisition start timing information from the base station, and the processor calculates correlation values around the received mmW acquisition start timing information for the mBs in the list.Type: GrantFiled: December 6, 2012Date of Patent: August 8, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Carl Wang, Yingxue K. Li, Onur Sahin, Philip J. Pietraski, Ravikumar V. Pragada, Gregg A. Charlton
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Publication number: 20170223552Abstract: A method and apparatus for improving and performing mmW beam tracking is disclosed. Localization methods to improve prediction of the position of a WTRU are described, which may allow a millimeter wave base station (mB) to appropriately select a modified beam and to perform more efficient handover. WTRUs may report directional signal strength measurements to mBs, which may then be used to generate a directional radio environment map (DREM) for use in identifying secondary links to use when a primary link fails. Additional localization techniques using internal/external information for prediction are described. Historical data use and the use of data obtained from mB-mB cooperation including feedback information and reference signaling information are also described. Methods for beam tracking for directional relays and initial beam training optimization are described as well.Type: ApplicationFiled: April 14, 2017Publication date: August 3, 2017Applicant: IDAC Holdings, Inc.Inventors: Arnab Roy, Ravikumar V. Pragada, Philip J. Pietraski, Bharath Viswanathan
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Patent number: 9706505Abstract: A method and apparatus are described. A wireless transmit/receive unit (WTRU) includes circuitry that determines transmission power levels associated with physical uplink shared channel (PUSCH) transmissions over a plurality of uplink component carriers. On a condition that maximum power scaling is required, the circuitry prioritizes providing power to a physical uplink control channel (PUCCH) over providing power to a physical uplink shared channel (PUSCH) having uplink control information (UCI) and prioritize providing power to the PUCCH and PUSCH having UCI over a PUSCH not having UCI. The circuitry transmits the PUCCH, the PUSCH having UCI or at least one PUSCH not having UCI over the plurality of uplink component carriers.Type: GrantFiled: April 13, 2015Date of Patent: July 11, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Philip J. Pietraski, Rui Yang, Kai Li, Carl Wang, Tao Deng, Samian Kaur, Erdem Bala, Ravikumar V. Pragada
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Publication number: 20170156046Abstract: A method and apparatus for neighbor discovery in a wireless communication system are disclosed. A neighbor seeking wireless transmit/receive unit (WTRU) may search for a first signal to discover neighbor WTRUs for peer-to-peer communication. The WTRU may then receive the first signal. Further, the WTRU may generate a report based on the received first signal. Then, the WTRU may send a second signal carrying the report to a cellular wireless network. The first signal may include a beacon for neighbor discovery or a synchronization signal or both. The report may contain at least one neighbor WTRU identity or at least a portion of a time value or both. Further, the report may contain a counter value, including at least a portion of a time value. The counter value may be based on a time source. In addition, the first signal may be received from a synchronization source.Type: ApplicationFiled: November 28, 2016Publication date: June 1, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Tao Deng, Ravikumar V. Pragada, Gregory S. Sternberg, Balaji Raghothaman, Zhuorong Deng, Kiran K. Vanganuru
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Patent number: 9629171Abstract: A method and apparatus for improving and performing mmW beam tracking is disclosed. Localization methods to improve prediction of the position of a WTRU are described, which may allow a millimeter wave base station (mB) to appropriately select a modified beam and to perform more efficient handover. WTRUs may report directional signal strength measurements to mBs, which may then be used to generate a directional radio environment map (DREM) for use in identifying secondary links to use when a primary link fails. Additional localization techniques using internal/external information for prediction are described. Historical data use and the use of data obtained from mB-mB cooperation including feedback information and reference signaling information are also described. Methods for beam tracking for directional relays and initial beam training optimization are described as well.Type: GrantFiled: August 28, 2013Date of Patent: April 18, 2017Assignee: IDAC Holdings, Inc.Inventors: Arnab Roy, Ravikumar V. Pragada, Philip J. Pietraski, Bharath Viswanathan
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Publication number: 20170099617Abstract: A method and apparatus for offloading backhaul traffic are disclosed. A first base station may detect a condition triggering backhaul traffic offloading for a wireless transmit/receive unit (WTRU). The first base station may establish a wireless connection with a second base station, and offload at least one bearer of the WTRU onto the second base station via the wireless connection. The first base station may be a macro-cell base station and the second base station may be a femto-cell base station having a wired connection to Internet and a mobile operator core network. The first or second base station may include a relay functionality and act as a relay between thee WTRU and the other base station. The backhaul link may be established using a Uu, Un, X2 interface or any other interface over a licensed or license-exempt frequency, a TV white space frequency, etc.Type: ApplicationFiled: December 16, 2016Publication date: April 6, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: John L. Tomici, Alexander Reznik, Prabhakar R. Chitrapu, Ayaskant Rath, Angelo A. Cuffaro, Brian G. Kiernan, Joseph M. Murray, Ravikumar V. Pragada
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Publication number: 20170086211Abstract: Methods and apparatus may perform dual-band or multi-band mesh operations. A dual-band mesh station (MSTA) capable of operating in an O-band and a D-band may seek to join a mesh network, and may receive O-band beacons from at least one MSTA in the mesh network, where the O-band beacons may include D-band mesh information. The joining MSTA may transmit D-band beacons in a time-period specified by the O-band beacon, and on a condition that a beacon response message is received, may further transmit D-band association information via O-band management frames to join mesh network on the D-band. The joining MSTA may perform contention-free scheduled access in the D-band while sharing D-band transmission information in the O-band to enable concurrent communication in the D-band by neighboring multi-band MSTAs.Type: ApplicationFiled: March 13, 2015Publication date: March 23, 2017Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Onur Sahin, Arnab Roy, Monisha Ghosh, Yugeswar Deenoo, Ravikumar V. Pragada, Joseph S. Levy
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Publication number: 20170064583Abstract: Systems, methods, and instrumentalities are disclosed for joining a node to a network, the method comprising a station associated with a first node sending a first beacon, wherein the first beacon is sent with an indication that the first beacon is sent from a station entity, and wherein the station associated with the first node belongs to a first personal basic service set (PBSS); the station associated with the first node receiving a transmission from a station associated with a second node that indicates that the station associated with the second node wants to associate with the station associated with a first node, wherein the station associated with the second node is unassociated with the first PBSS; the station associated with the first node sending a message to a PBSS Control Point (PCP) associated with a third node, wherein the message is associated with handover preparation; the station associated with the first node receiving acceptance to change personality to a PCP and perform handover; and theType: ApplicationFiled: March 5, 2015Publication date: March 2, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Arnab Roy, Yugeswar Deenoo, Ravikumar V. Pragada
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Publication number: 20170034812Abstract: 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: ApplicationFiled: April 9, 2015Publication date: February 2, 2017Applicant: IDAC Holdings, Inc.Inventors: Tao Deng, Yugeswar Deenoo, Philip J. Pietraski, Ravikumar V. Pragada
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Patent number: 9526056Abstract: A method and apparatus for offloading backhaul traffic are disclosed. A first base station may detect a condition triggering backhaul traffic offloading for a wireless transmit/receive unit (WTRU). The first base station may establish a wireless connection with a second base station, and offload at least one bearer of the WTRU onto the second base station via the wireless connection. The first base station may be a macro-cell base station and the second base station may be a femto-cell base station having a wired connection to Internet and a mobile operator core network. The first or second base station may include a relay functionality and act as a relay between the WTRU and the other base station. The backhaul link may be established using a Uu, Un, X2 interface or any other interface over a licensed or license-exempt frequency, a TV white space frequency, etc.Type: GrantFiled: March 15, 2013Date of Patent: December 20, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: John L. Tomici, Prabhakar R. Chitrapu, Ayaskant Rath, Angelo A. Cuffaro, Brian G. Kiernan, Joseph M. Murray, Ravikumar V. Pragada, Alexander Reznik
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Patent number: 9510177Abstract: A method and apparatus for neighbor discovery in a wireless communication system are disclosed. A neighbor seeking wireless transmit/receive unit (WTRU) may send a first beacon based on configuration information provided by the network. The neighbor WTRUs receive the first beacon and may send either a report to the network or send a second beacon to the neighbor seeking WTRU. The network may then provide neighbor WTRU information to the neighbor seeking WTRU. The neighbor discovery may be performed within a pre-defined group of WTRUs that is formed based on proximity to the WTRU and/or an attribute of the WTRU. The neighbor discovery procedure may be performed to find neighbor WTRUs in case where a WTRU fails to find any network. A neighbor list may be generated by the neighbor seeking WTRU by measuring reference signals transmitted by neighbor WTRUs on an uplink to the network.Type: GrantFiled: June 8, 2012Date of Patent: November 29, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Tao Deng, Ravikumar V Pragada, Gregory S Sternberg, Balaji Raghothaman, Zhuorong Deng, Kiran K Vanganuru
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Publication number: 20160330643Abstract: Systems, methods, and instrumentalities are provided to implement a method for radio environment, measurement (REM) scheduling, information extraction, storage and processing to generate terrain and object mapping/identification using higher frequency radio signals, directional transmission techniques and external database information.Type: ApplicationFiled: January 13, 2015Publication date: November 10, 2016Applicant: InterDigital Patent Holdings, Inc.Inventors: Onur Sahin, Ravikumar V. Pragada, Philip J. Pietraski, Douglas R. Castor, Alan G. Carlton, Dirk Trossen
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Patent number: 9474009Abstract: A method and apparatus for association in a mesh network may be disclosed. A method in a new node may include performing a discovery procedure with a plurality of peer nodes in the mesh network, initiating a temporary association procedure with each peer node, selecting a set of peer nodes from the plurality of peer nodes based on a selection algorithm at least based on a signal-to-interference and noise ratio (SINR) with each peer node and an interference impact of each peer node, and performing a final association with the selected set of peer nodes.Type: GrantFiled: February 5, 2014Date of Patent: October 18, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Yugeswar Deenoo, Arnab Roy, Ravikumar V. Pragada, Onur Sahin, Philip J. Pietraski
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Publication number: 20160241314Abstract: 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: ApplicationFiled: October 16, 2014Publication date: August 18, 2016Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Steven FERRANTE, Arnab ROY, Philip J. PIETRASKI, Ravikumar V. PRAGADA