Patents by Inventor Sana Sfar
Sana Sfar 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: 11239901Abstract: Methods and apparatus are described. A wireless transmit/receive unit (WTRU) includes a transceiver and a processor operatively coupled to the transceiver. The transceiver and the processor establish a connection with a first wireless network node and a second wireless network node. The transceiver and the processor also receive power configurations and timing advances from the first wireless network node independently of the second wireless network node. The transceiver and the processor also simultaneously receive downlink signals from both the first wireless network node and the second wireless network node. The downlink signals are independently scheduled by a scheduler of the first wireless network node and a scheduler of the second wireless network node.Type: GrantFiled: April 5, 2019Date of Patent: February 1, 2022Assignee: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Publication number: 20190238213Abstract: Methods and apparatus are described. A wireless transmit/receive unit (WTRU) includes a transceiver and a processor operatively coupled to the transceiver. The transceiver and the processor establish a connection with a first wireless network node and a second wireless network node. The transceiver and the processor also receive power configurations and timing advances from the first wireless network node independently of the second wireless network node. The transceiver and the processor also simultaneously receive downlink signals from both the first wireless network node and the second wireless network node. The downlink signals are independently scheduled by a scheduler of the first wireless network node and a scheduler of the second wireless network node.Type: ApplicationFiled: April 5, 2019Publication date: August 1, 2019Applicant: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Patent number: 10270518Abstract: Methods and wireless devices are described. A method includes a wireless device transmitting to wireless transmit/receive units (WTRUs) by being scheduled by the base station or using a pool of radio resources, which is for any of a plurality of wireless devices to use for transmission to WTRUs. On a condition that the wireless device is to be scheduled by the base station, the wireless device receives scheduling information for transmission to a WTRU having a group radio network terminal identifier (RNTI) and transmits to the WTRU in response to the received scheduling information. The scheduling information for transmission to the base station uses a different RNTI. On a condition that the wireless device is to use the pool of radio resources for transmission to a WTRU, the wireless device transmits to the WTRU without being scheduled by the base station using the pool of radio resources.Type: GrantFiled: December 16, 2016Date of Patent: April 23, 2019Assignee: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Publication number: 20170149490Abstract: Methods and wireless devices are described. A method includes a wireless device transmitting to wireless transmit/receive units (WTRUs) by being scheduled by the base station or using a pool of radio resources, which is for any of a plurality of wireless devices to use for transmission to WTRUs. On a condition that the wireless device is to be scheduled by the base station, the wireless device receives scheduling information for transmission to a WTRU having a group radio network terminal identifier (RNTI) and transmits to the WTRU in response to the received scheduling information. The scheduling information for transmission to the base station uses a different RNTI. On a condition that the wireless device is to use the pool of radio resources for transmission to a WTRU, the wireless device transmits to the WTRU without being scheduled by the base station using the pool of radio resources.Type: ApplicationFiled: December 16, 2016Publication date: May 25, 2017Applicant: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Patent number: 9537560Abstract: A method and apparatus for wireless communications is disclosed. Channel state information (CSI) for a plurality of network nodes is transmitted. Grant information is received from at least one network node of the plurality of network nodes. The grant information is based on the transmitted CSI and includes an indication of a cooperative scheme. A plurality of beam-formed signals, including data from each of the plurality of network nodes, is received in response to the received grant information. The same data is received from each of the plurality of network nodes.Type: GrantFiled: January 20, 2016Date of Patent: January 3, 2017Assignee: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Publication number: 20160142128Abstract: A method and apparatus for wireless communications is disclosed. Channel state information (CSI) for a plurality of network nodes is transmitted. Grant information is received from at least one network node of the plurality of network nodes. The grant information is based on the transmitted CSI and includes an indication of a cooperative scheme. A plurality of beam-formed signals, including data from each of the plurality of network nodes, is received in response to the received grant information. The same data is received from each of the plurality of network nodes.Type: ApplicationFiled: January 20, 2016Publication date: May 19, 2016Applicant: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela Beluri, Chunxuan Ye, Yogendra Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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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: 9276661Abstract: A method and apparatus for cooperation in wireless communications. Cooperation is considered among a number of network elements, including at least one wireless transmit-receive unit, at least one relay station, and at least one base station.Type: GrantFiled: November 13, 2014Date of Patent: March 1, 2016Assignee: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar R. Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela C. Beluri, Chunxuan Ye, Yogendra C. Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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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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Patent number: 9077424Abstract: A method and apparatus may be used in cooperative relays with incremental redundancy (IR) and distributed spatial multiplexing. A wireless transmit/receive unit (WTRU) may listen to the base station (BS) transmission during a first phase of the communication, and use cooperation between a relay station (RS) and the BS for the data transmission during a second phase to improve performance. During the second phase, both the BS and the RS may transmit data to the WTRU, using either distributed Space Time Block Codes/Space Frequency Block Codes (STBC/SFBC) or distributed spatial multiplexing.Type: GrantFiled: July 16, 2014Date of Patent: July 7, 2015Assignee: 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: 20150085741Abstract: A method and apparatus for cooperation in wireless communications. Cooperation is considered among a number of network elements, including at least one wireless transmit-receive unit, at least one relay station, and at least one base station.Type: ApplicationFiled: November 13, 2014Publication date: March 26, 2015Applicant: INTERDIGITAL TECHNOLOGY CORPORATIONInventors: Sana Sfar, Alexander Reznik, Prabhakar R. Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia A. Pinheiro, Mihaela C. Beluri, Chunxuan Ye, Yogendra C. Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Patent number: 8917649Abstract: A method and apparatus for cooperation in wireless communications. Cooperation is considered among a number of network elements, including at least one wireless transmit-receive unit, at least one relay station, and at least one base station.Type: GrantFiled: December 31, 2008Date of Patent: December 23, 2014Assignee: InterDigital Technology CorporationInventors: Sana Sfar, Alexander Reznik, Prabhakar R. Chitrapu, Zinan Lin, Mohammed Sammour, Ana Lucia Pinheiro, Mihaela C. Beluri, Chunxuan Ye, Yogendra C. Shah, Gregg A. Charlton, Guodong Zhang, Khushali N. Manseta, Ruiyuan Hu
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Patent number: 8908624Abstract: A two-way relay wireless communication method and device may combine multiple bit steams, for one source node and two target nodes, and broadcasting a network coded combined bit sequence to reduce the number of time slots for transmission. A first device may receive a signal from the source node and a target node simultaneously in a time slot. The first device may receive subsequent signals from the source node and multiple target nodes simultaneously in successive time slots. Hierarchical modulation may be applied to the received signals. The first device may decode the received signals and generate a plurality of intermediate bit sequences (IBS)s for a broadcast transmission. The generated IBSs may be grouped according to a channel condition. A second device may be configured to receive the broadcast transmission and decode a portion of the broadcast transmission that is intended for the second device.Type: GrantFiled: October 22, 2010Date of Patent: December 9, 2014Assignee: InterDigital Patent Holdings, Inc.Inventors: Sana Sfar, Weimin Liu, Philip J. Pietraski, Rui Yang, Zhemin Xu
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Publication number: 20140328244Abstract: A method and apparatus may be used in cooperative relays with incremental redundancy (IR) and distributed spatial multiplexing. A wireless transmit/receive unit (WTRU) may listen to the base station (BS) transmission during a first phase of the communication, and use cooperation between a relay station (RS) and the BS for the data transmission during a second phase to improve performance. During the second phase, both the BS and the RS may transmit data to the WTRU, using either distributed Space Time Block Codes/Space Frequency Block Codes (STBC/SFBC) or distributed spatial multiplexing.Type: ApplicationFiled: July 16, 2014Publication date: November 6, 2014Applicant: 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: 20140241254Abstract: 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: ApplicationFiled: April 1, 2011Publication date: August 28, 2014Applicant: 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: 8787241Abstract: A method and apparatus are used in cooperative relays with incremental redundancy (IR) and distributed spatial multiplexing. A wireless transmit/receive unit (WTRU) may listen to the base station (BS) transmission during Phase 1 of the communication, and use cooperation between a relay station (RS) and the BS for the data transmission during Phase 2 to improve performance. During Phase 2, both the BS and the RS may transmit data to the WTRU, using either distributed Space Time Block Codes/Space Frequency Block Codes (STBC/SFBC) or distributed spatial multiplexing.Type: GrantFiled: July 7, 2009Date of Patent: July 22, 2014Assignee: InterDigital Patent Holdings, Inc.Inventors: Ana Lucia Pinheiro, Sana Sfar, Prabhakar R. Chitrapu, Philip J. Pietraski, Alexander Reznik, Eldad M. Zeira, Mihaela C. Beluri
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Patent number: 8737297Abstract: A method for network coding of packets between End Nodes (ENs) and a Relay Node (RN) in wireless communications can be performed at the RN. This method may include: receiving a new packet at the RN from one of the ENs; determining the source node of the new packet at the RN; providing a buffer for each EN; determining whether the buffer associated with the EN that is not the source of the new packet (non-source buffer) has the new packet buffered and based upon such determination, either: (1) storing the new packet in the EN buffer that is the source of the new packet on a condition that the non-source buffer is empty; or (2) network coding the new packet with an existing packet in the non-source buffer.Type: GrantFiled: February 19, 2010Date of Patent: May 27, 2014Assignee: InterDigital Patent Holdings, Inc.Inventors: Alexander Reznik, Eldad M. Zeira, Chunxuan Ye, Sana Sfar
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Publication number: 20140071896Abstract: A wireless communication method and apparatus are disclosed for assigning different phases, (i.e., time periods), to perform data transmissions over designated frequency bands in a cooperative relaying system. In phase 1, a relay station (RS) listens to a wireless transmit/receive unit (WTRU) and successfully receives b information bits. In phase 2, the RS and WTRU cooperatively transmit these b information bits to the destination. These transmissions may be performed in a unicast scheme, wherein a WTRU sends information to a selected RS in phase 1, and the RS forwards the information to a base station (BS) in phase 2. The transmission may also be performed in a multicast scheme, wherein the WTRU sends information to the RS and the BS in phase 1, and the RS transmits a subset the information to the BS in phase 2.Type: ApplicationFiled: November 15, 2013Publication date: March 13, 2014Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Zinan Lin, Eldad M. Zeira, Alexander Reznik, Prabhakar R. Chitrapu, Sana Sfar
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Patent number: 8611273Abstract: A wireless communication method and apparatus are disclosed for assigning different phases, (i.e., time periods), to perform data transmissions over designated frequency bands in a cooperative relaying system. In phase 1, a relay station (RS) listens to a wireless transmit/receive unit (WTRU) and successfully receives b information bits. In phase 2, the RS and WTRU cooperatively transmit these b information bits to the destination. These transmissions may be performed in a unicast scheme, wherein a WTRU sends information to a selected RS in phase 1, and the RS forwards the information to a base station (BS) in phase 2. The transmission may also be performed in a multicast scheme, wherein the WTRU sends information to the RS and the BS in phase 1, and the RS transmits a subset the information to the BS in phase 2.Type: GrantFiled: July 8, 2009Date of Patent: December 17, 2013Assignee: InterDigital Patent Holdings, Inc.Inventors: Zinan Lin, Eldad M. Zeira, Alexander Reznik, Prabhakar R. Chitrapu, Sana Sfar
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Publication number: 20120300692Abstract: A two-way relay wireless communication method and device may combine multiple bit steams, for one source node and two target nodes, and broadcasting a network coded combined bit sequence to reduce the number of time slots for transmission. A first device may receive a signal from the source node and a target node simultaneously in a time slot. The first device may receive subsequent signals from the source node and multiple target nodes simultaneously in successive time slots. Hierarchical modulation may be applied to the received signals. The first device may decode the received signals and generate a plurality of intermediate bit sequences (IBS)s for a broadcast transmission. The generated IBSs may be grouped according to a channel condition. A second device may be configured to receive the broadcast transmission and decode a portion of the broadcast transmission that is intended for the second device.Type: ApplicationFiled: October 22, 2010Publication date: November 29, 2012Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Sana Sfar, Weimin Liu, Philip J. Pietraski, Rui Yang, Zhemin Xu