Patents by Inventor Philip J. Pietraski
Philip J. Pietraski 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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Patent number: 9380136Abstract: A method and apparatus for encoding channel quality indicator (CQI) and precoding control information (PCI) bits are disclosed. Each of the input bits, such as CQI bits and/or PCI bits, has a particular significance. The input bits are encoded with a linear block coding. The input bits are provided with an unequal error protection based on the significance of each input bit. The input bits may be duplicated based on the significance of each input bit and equal protection coding may be performed. A generator matrix for the encoding may be generated by elementary operation of conventional basis sequences to provide more protection to a most significant bit (MSB).Type: GrantFiled: September 5, 2014Date of Patent: June 28, 2016Assignee: InterDigital Technology CorporationInventors: Rui Yang, Philip J. Pietraski, Eldad M. Zeira, Alexander Reznik, Yongwen E. Yang
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Publication number: 20160134437Abstract: A method and apparatus for using demodulation reference signal (DM-RS) based channel state information (CSI) feedback in Orthogonal Frequency Division Multiplexing-multiple-input multiple-output (OFDM-MIMO) systems is disclosed. A wireless transmit/receive unit (WTRU) may include: a receiver configured to receive broadcast information from an eNodeB, wherein the broadcast information is received by a plurality of WTRUs; and a processor configured to derive, from the received broadcast information, physical resource blocks having demodulation reference signals (DM-RS) and precoding information of the DM-RS; the receiver and the processor further configured to derive a channel estimation using the DM-RS received in the physical resource blocks, wherein the plurality of WTRUs derive a channel estimation using the DM-RS received in the physical resource blocks.Type: ApplicationFiled: January 15, 2016Publication date: May 12, 2016Applicant: InterDigital Patent Holdings, Inc.Inventors: Yingxue K. Li, Hongsan Sheng, Guodong Zhang, Philip J. Pietraski
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Patent number: 9326211Abstract: A wireless transmit/receive unit (WTRU) may transmit data via multiple component carriers associated with multiple eNode-Bs. The WTRU may receive a handover request message from a source eNode-B. While maintaining a connection with a component carrier on the source eNode-B, the WTRU may establish a connection with another component carrier on a target eNode-B.Type: GrantFiled: June 10, 2011Date of Patent: April 26, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Samian J. Kaur, Philip J. Pietraski, Ana Lucia A. Pinheiro, Stephen E. Terry, Carl Wang
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Publication number: 20160097835Abstract: Methods and apparatus for supporting reference signals for positioning measurements are disclosed. Methods include subframe configuration, subframe structures, measurement opportunities using a set of downlink subframes which are not all consecutive, handling of subframes containing reference signals and system signals such as synchronization signals, paging occasions and Multicast Broadcast Multimedia Service (MBMS), and related control signaling between a long term evolution (LTE) network and a wireless transmit/receive unit (WTRU). Moreover, methods to resolve allocation conflicts arising between positioning reference signals and other reference signals are disclosed.Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Guodong Zhang, Joseph S Levy, Philip J Pietraski, Janet A Stern-Berkowitz, Charles A Dennean, Marian Rudolf, John W Haim
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Patent number: 9306719Abstract: Disclosed herein is HARQ management, scheduling, and measurements, among other things, for cooperative communication. For example, methods herein may be used in situations wherein relaying or helping mechanisms may comprise the use of a relay node which is part of a fixed infrastructure or a relay node which may be a mobile wireless transmit/receive unit (WTRU). In said situations, a first transmission with first data is established between an evolved NodeB (eNB) and a WTRU. A second transmission with second data is established between a relay node (RN) and the WTRU. Said first and second data are combined for decoding. A single HARQ feedback for said first and second transmissions is sent from the WTRU to the eNB.Type: GrantFiled: April 1, 2011Date of Patent: April 5, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Samian J. Kaur, Tao Deng, Sana Sfar, Kiran K. Vanganuru, Gregory S. Sternberg, Matthew G. Puzio, Philip J. Pietraski, Ravikumar V. Pragada, Balaji Raghothaman
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Patent number: 9294926Abstract: A method and apparatus are described for integrating third generation partnership project (3GPP) radio access network and an Institute of Electrical and Electronics Engineers (IEEE) 802.11 radio access technologies (RATs). This may be done at a medium access control (MAC) layer or below the MAC layer. For example, a wireless transmit/receive unit (WTRU) for multiple radio access technology (RAT) integration includes a 3GPP RAT including a radio resource control (RRC) entity, an IEEE 802.11 RAT including a medium access control (MAC) management entity, and a session management entity (SME) for mapping between the RRC entity and the MAC management entity. Combined, hybrid and split versions of logical channel prioritization (LCP) are described. The features of an LTE access stratum-service management entity (AS-SME) are also described.Type: GrantFiled: October 5, 2012Date of Patent: March 22, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Ravikumar V. Pragada, Samian Kaur, Douglas R. Castor, Philip J. Pietraski, Arnab Roy
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Publication number: 20160081034Abstract: A method and apparatus for power control for distributed wireless communication is disclosed including one or more power control loops associated with a wireless transmit/receive unit (WTRU). Each power control loop may include open loop power control or closed loop power control. A multi-phase power control method is also disclosed with each phase representing a different time interval and a WTRU sends transmissions at different power levels to different set of node-Bs or relay stations during different phases to optimize communications.Type: ApplicationFiled: November 19, 2015Publication date: March 17, 2016Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Zinan Lin, Alexander Reznik, Prabhakar R. Chitrapu, Mihaela C. Beluri, Eldad M. Zeira, Philip J. Pietraski, Sung-Hyuk Shin, Gregg A. Charlton
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Patent number: 9270495Abstract: A method and apparatus for using demodulation reference signal (DM-RS) based channel state information (CSI) feedback in Orthogonal Frequency Division Multiplexing-multiple-input multiple-output (OFDM-MIMO) systems is disclosed. The wireless transmit/receive unit (WTRU) receives one or more resource blocks from a base station, wherein the resource blocks (RBs) include demodulating reference signals (DM-RS) and precoder information. The precoder information is sent unicast or broadcasted over a common control channel. The WTRU estimates an effective channel estimate based on the DM-RS, derives an unprecoded channel based on the effective channel and the precoder information, generates CSI feedback based on the unprecoded channel, and transmits the CSI feedback to the base station. Alternatively, the WTRU estimates an effective channel estimate based on the DM-RS, quantizes the effective channel estimate and transmits the CSI feedback to the base station.Type: GrantFiled: February 24, 2014Date of Patent: February 23, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Yingxue K. Li, Hongsan Sheng, Guodong Zhang, Philip J. Pietraski
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Publication number: 20160029403Abstract: 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: ApplicationFiled: February 7, 2014Publication date: January 28, 2016Applicant: InterDigital Patent Holdings, Inc.Inventors: Arnab ROY, Yugeswar DEENOO, Ravikumar V. PRAGADA, Onur SAHIN, Philip J. PIETRASKI
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Patent number: 9234957Abstract: Methods and apparatus for supporting reference signals for positioning measurements are disclosed. Methods include subframe configuration, subframe structures, measurement opportunities using a set of downlink subframes which are not all consecutive, handling of subframes containing reference signals and system signals such as synchronization signals, paging occasions and Multicast Broadcast Multimedia Service (MBMS), and related control signaling between a long term evolution (LTE) network and a wireless transmit/receive unit (WTRU). Moreover, methods to resolve allocation conflicts arising between positioning reference signals and other reference signals are disclosed.Type: GrantFiled: April 27, 2010Date of Patent: January 12, 2016Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Janet A. Stern-Berkowitz, Marian Rudolf, Charles A. Dennean, John W. Haim, Guodong Zhang, Joseph S. Levy, Philip J. Pietraski
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Publication number: 20160007371Abstract: 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: ApplicationFiled: February 6, 2014Publication date: January 7, 2016Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Philip J. PIETRASKI, Tao DENG, Onur SAHIN, Ravikumar V. PRAGADA
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Patent number: 9232416Abstract: A method and apparatus for power control for distributed wireless communication is disclosed including one or more power control loops associated with a wireless transmit/receive unit (WTRU). Each power control loop may include open loop power control or closed loop power control. A multi-phase power control method is also disclosed with each phase representing a different time interval and a WTRU sends transmissions at different power levels to different set of node-Bs or relay stations during different phases to optimize communications.Type: GrantFiled: June 3, 2014Date of Patent: January 5, 2016Assignee: InterDigital Patent Holdings, Inc.Inventors: Zinan Lin, Alexander Reznik, Prabhakar R. Chitrapu, Mihaela C. Beluri, Eldad M. Zeira, Philip J. Pietraski, Sung-Hyuk Shin, Gregg A. Charlton
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Publication number: 20150382171Abstract: Device discovery at long ranges using directional antenna patterns for both transmission and reception of discovery beacon messages and discovery beacon response messages. Omnidirectional band transmissions to assist aiming a directional antenna are also described. Further, discovery beacons that include only those information elements which are necessary for device discovery are discussed, as well as separate scheduling beacons. The discovery beacon may include more robust encoding to increase discovery range or may be transmitted using a narrower channel to improve signal to noise ratio.Type: ApplicationFiled: February 7, 2014Publication date: December 31, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Arnab ROY, Yugeswar DEENOO, Philip J. PIETRASKI, Ravikumar V. PRAGADA, Onur SAHIN
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Publication number: 20150382275Abstract: A method and apparatus for joint routing and distributed scheduling in a directional mesh network includes receiving feedback for multiple candidate paths from at least one neighbor node, Semi-static and instantaneous metrics are determined based upon the received feedback. Routing from a first node to a destination node is determined based upon the semi-static and instantaneous metrics, and a transmission is routed in accordance with the determined route from the first node to the destination node.Type: ApplicationFiled: February 6, 2014Publication date: December 31, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Ravikumar V. PRAGADA, Yugeswar DEENOO, Onur SAHIN, Arnab ROY, Philip J. PIETRASKI
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Publication number: 20150373572Abstract: Techniques may be used for interference measurement and management in directional mesh networks, including centralized and/or distributed approaches. A centralized node, such as an operations and maintenance (OAM) center, may use feedback from nodes in the mesh network to partition the nodes in the mesh network into clusters based on interference levels. Interference measurement reports may be used by the centralized node to update cluster membership. An initiating node in the mesh network may use topographical information to generate an initial interference cluster, and interference measurement frame (IMF) scheduling information may be used to schedule transmissions within the interference clusters. Techniques for opportunistic measurement campaigns, simultaneous measurement campaigns, link failure detection, and link re-acquisition in directional mesh networks may also be used.Type: ApplicationFiled: February 5, 2014Publication date: December 24, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Onur SAHIN, Arnab ROY, Yugeswar DEENOO, Ravikumar V. PRAGADA, Philip J. PIETRASKI, Joseph S. LEVY, Tao DENG
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Publication number: 20150373618Abstract: 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: ApplicationFiled: February 5, 2014Publication date: December 24, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Yugeswar DEENOO, Arnab ROY, Ravikumar V. PRAGADA, Onur SAHIN, Philip J. PIETRASKI
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Publication number: 20150303960Abstract: A method and apparatus for use in a packet based wireless communication system for reducing automatic gain control (AGC) convergence time at a receiver are described. A radio frequency (RF) signal is received. The RF signal includes a sequence of a plurality of pre-defined power levels at a beginning of a preamble of the RF signal. Statistics for each of the plurality of pre-defined power levels at the beginning of the preamble of the RF signal are computed. An appropriate gain for a variable gain amplifier (VGA) is then computed based on the computed statistics for each of the plurality of pre-defined power levels and a-priori information related to transmission power differences between the plurality of pre-defined power levels of the sequence.Type: ApplicationFiled: April 17, 2015Publication date: October 22, 2015Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Steven Ferrante, Philip J. Pietraski
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Publication number: 20150304073Abstract: A method and apparatus may be used to receive a first transmission. The first transmission of data bits may have a first redundancy version in a transmission time interval (TTI) from either a first node or a second node. The first transmission may have a first redundancy version in a TTI from both the first node and the second node. The method and apparatus may receive a second transmission of the data bits having a second redundancy version in a second TTI. The second transmission may be received from a different one of the first node, the second node, or both the first node and the second node. The first and second redundancy versions may be different redundancy versions. The method and apparatus may combine the received bits of the first and second transmissions to recover the first data bits.Type: ApplicationFiled: July 2, 2015Publication date: October 22, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Ana Lucia Pinheiro, Sana Sfar, Prabakar R. Chitrapu, Philip J. Pietraski, Alexander Reznik, Eldad M. Zeira, Mihaela C. Beluri
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Publication number: 20150245234Abstract: Systems, methods, and instrumentalities are provided to implement granting a license to a millimeter wave base station (mB) in a wireless network. The mB may send a license request. The license request may be associated with a beam direction in a frequency band. The mB may receive a measurement schedule. The mB may take an interference measurement, e.g., in accordance with the measurement schedule. The interference measurement may be associated with one or more of the beam direction, a frequency band, or an assigned time period. The mB may send the interference measurement to the license coordinator. The mB may receive a temporary license for the beam direction in the frequency band. The temporary license may include a first transmit power restriction. The mB may receive an instruction to send a signal burst. The mB may receive a non-temporary license. The non-temporary license may include a second transmit power restriction.Type: ApplicationFiled: August 28, 2013Publication date: August 27, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Arnab Roy, Philip J. Pietraski, Ravikumar V. Pragada
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Publication number: 20150229461Abstract: Embodiments contemplate TDD systems and techniques where timeslots may be allocated as DL, UL, or FDSC; the base station (BS) may be full duplex singled channel (FDSC) capable; and some, all, or none of the UEs (or WTRUs) may be FDSC capable. In one or more embodiments, FDSC1 timeslots may be contemplated that may be used (in some embodiments perhaps exclusively used) by a pair of radios, for example one BS and one UE, both having FD capability. In one or more embodiments, FDSC timeslots may be shared among a BS with FDSC capability and two or more UEs, that may be half duplex (HD). Embodiments also contemplate various FDD systems and techniques, including full duplex FDD systems and techniques.Type: ApplicationFiled: August 27, 2013Publication date: August 13, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Robert A. DiFazio, Philip J. Pietraski, Rui Yang, Erdem Bala, Jialing Li