Patents by Inventor Meilong Jiang
Meilong Jiang 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: 20240154848Abstract: A first wireless communication device may encode real samples of data to obtain encoded data based at least in part on adding one or more time domain complex samples to the real samples of the data. A function of the one or more time domain complex samples may be a known value, and the function may be a sum of exponentials of the one or more time domain complex samples. The first wireless communication device may transmit, to a second wireless communication device, the encoded data.Type: ApplicationFiled: November 9, 2022Publication date: May 9, 2024Inventors: Ori SHENTAL, Meilong JIANG, Ashwin SAMPATH, Ahmed BEDEWY
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Publication number: 20230395994Abstract: Aspects relate to an array antenna and communication using the array antenna. In some examples, the array antenna includes a first array of antenna elements arranged according to a first circle and a second array of antenna elements arranged according to a second circle, where the first circle and the second circle are concentric circles. In some examples, the first array of antenna elements is arranged with an angular offset with respect to the second array of antenna elements. For example, a first radius associated with a first antenna element of the first array of antenna elements may be offset at an angle with respect to a second radius of a second antenna element of the second array of antenna elements.Type: ApplicationFiled: June 1, 2022Publication date: December 7, 2023Inventors: Danlu ZHANG, Meilong JIANG, Juergen CEZANNE, Junyi LI, Ashwin SAMPATH, Yu ZHANG, Allen Minh-Triet TRAN
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Publication number: 20230269603Abstract: A wireless transmit/receive unit (WTRU) may measure one or more of a first plurality of beam reference signals. Further, the WTRU may select a first beam reference signal from among the measured one or more of the first plurality of beam reference signals. Also, WTRU may determine a set of physical random access channel (PRACH) resources for the selected first beam reference signal. Moreover, the WTRU may measure one or more of a second plurality of beam reference signals. Further, the WTRU may select a second beam reference signal from among the measured one or more of the second plurality of beam reference signals. The WTRU may transmit an indication of the selected second beam reference signal in a physical uplink shared channel (PUSCH) transmission, and may transmit a PRACH signal using at least one PRACH resource of the determined set of PRACH resources.Type: ApplicationFiled: April 25, 2023Publication date: August 24, 2023Applicant: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 11722189Abstract: Methods, apparatuses, and computer-readable medium for fronthaul compression are provided. An example method may include receiving, from a UE, uplink data via one or more active tones of a plurality of tones in a symbol, the uplink data corresponding to an access vector. The example method may further include compressing the uplink data based on a linear transformation of a pseudo-access vector generated based on the access vector, the linear transformation including a matrix, the compression enabling a second network entity to decompress the compressed uplink data without knowing one or more locations associated with the one or more active tones. The example method may further include transmitting, to the second network entity, the compressed uplink data.Type: GrantFiled: December 17, 2021Date of Patent: August 8, 2023Assignee: QUALCOMM IncorporatedInventors: Ori Shental, Ashwin Sampath, Ozge Koymen, Junyi Li, Juergen Cezanne, Qiang Wu, Meilong Jiang
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Publication number: 20230198585Abstract: Methods, apparatuses, and computer-readable medium for fronthaul compression are provided. An example method may include receiving, from a UE, uplink data via one or more active tones of a plurality of tones in a symbol, the uplink data corresponding to an access vector. The example method may further include compressing the uplink data based on a linear transformation of a pseudo-access vector generated based on the access vector, the linear transformation including a matrix, the compression enabling a second network entity to decompress the compressed uplink data without knowing one or more locations associated with the one or more active tones. The example method may further include transmitting, to the second network entity, the compressed uplink data.Type: ApplicationFiled: December 17, 2021Publication date: June 22, 2023Inventors: Ori SHENTAL, Ashwin SAMPATH, Ozge KOYMEN, Junyi LI, Juergen CEZANNE, Qiang WU, Meilong JIANG
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Patent number: 11638163Abstract: A wireless transmit/receive unit (WTRU) may receive a configuration message from a first base station including correspondence information regarding a plurality of beam reference signals, the correspondence information including information regarding designation of at least one set of physical random access channel (PRACH) resources for each of the plurality of beam reference signals. The WTRU may measure the plurality of beam reference signals transmitted from a second base station and select a beam reference signal from among the plurality of measured beam reference signals. The WTRU may determine a set of PRACH resources for the selected beam reference signal based on the information regarding designation of at least one set of PRACH resources for each of the plurality of measured beam reference signals included in the correspondence information. The WTRU may transmit, to the second base station, a PRACH transmission using at least one PRACH resource of the determined set.Type: GrantFiled: June 14, 2021Date of Patent: April 25, 2023Assignee: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 11223394Abstract: Systems, methods, and instrumentalities are disclosed for antenna virtualization, e.g., in at least a two-dimensional antenna array. NE physical antenna elements may be virtualized to Np logical antenna ports. A virtualization may be WTRU-specific, which may optimize MIMO performance. A simplified MIMO scheme may be used with A reduction in feedback, reference signal, and/or control signaling overhead. Antenna virtualization schemes may utilize channel characteristics. Antenna virtualization may be defined, for example, based on antenna port to antenna element mapping, based on a measurement reference signal, based on a codebook or a codebook subset or based on an antenna virtualization matrix. One or more antenna virtualization schemes may be configured in a cell. Antenna virtualization schemes may be configured in a WTRU-specific manner, perhaps for example based on a WTRU channel characteristic(s). A WTRU may report one or more useful (e.g., optimized) antenna virtualization schemes, e.g.Type: GrantFiled: November 12, 2015Date of Patent: January 11, 2022Assignee: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Afshin Haghighat, Meilong Jiang, Janet A. Stern-Berkowitz
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Publication number: 20210306870Abstract: A wireless transmit/receive unit (WTRU) may receive a configuration message from a first base station including correspondence information regarding a plurality of beam reference signals, the correspondence information including information regarding designation of at least one set of physical random access channel (PRACH) resources for each of the plurality of beam reference signals. The WTRU may measure the plurality of beam reference signals transmitted from a second base station and select a beam reference signal from among the plurality of measured beam reference signals. The WTRU may determine a set of PRACH resources for the selected beam reference signal based on the information regarding designation of at least one set of PRACH resources for each of the plurality of measured beam reference signals included in the correspondence information. The WTRU may transmit, to the second base station, a PRACH transmission using at least one PRACH resource of the determined set.Type: ApplicationFiled: June 14, 2021Publication date: September 30, 2021Applicant: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 11082863Abstract: A method and apparatus for determining Physical Random Access Channel (PRACH) resources and using beams are disclosed herein. In an example, a wireless transmit/receive unit (WTRU) may measure a plurality of beam reference signals transmitted from a base station. Further, the WTRU may select a beam reference signal from among the plurality of measured beam reference signals. Also, the WTRU may receive a configuration message from the base station that includes correspondence information regarding the plurality of beam reference signals, wherein the correspondence information designates at least one set of PRACH resources for each of the plurality of beam reference signals. In addition, the WTRU may determine a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information. Moreover, the WTRU may transmit a PRACH signal using at least one PRACH resource of the determined set of PRACH resources.Type: GrantFiled: August 12, 2019Date of Patent: August 3, 2021Assignee: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 11039323Abstract: A method and apparatus for determining Physical Random Access Channel (PRACH) resources and using beams are disclosed herein. In an example, a wireless transmit/receive unit (WTRU) may measure a plurality of beam reference signals transmitted from a base station. Further, the WTRU may select a beam reference signal from among the plurality of measured beam reference signals. Also, the WTRU may receive a configuration message from the base station that includes correspondence information regarding the plurality of beam reference signals, wherein the correspondence information designates at least one set of PRACH resources for each of the plurality of beam reference signals. In addition, the WTRU may determine a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information. Moreover, the WTRU may transmit a PRACH signal using at least one PRACH resource of the determined set of PRACH resources.Type: GrantFiled: August 12, 2019Date of Patent: June 15, 2021Assignee: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 10631272Abstract: A method implemented in a base station for conveying scheduling information in an orthogonal frequency division multiple access (OFDMA) multi-user (MU)-multiple input multiple output (MIMO) system is disclosed. The method includes transmitting to a first user equipment (UE) the scheduling information including first scheduling information of the first UE and at least a portion of second scheduling information of at least one second UE, wherein the scheduling information includes a resource block (RB) assigned to the first UE, the number of streams, and an indication of one or more dedicated reference symbol (RS) layers assigned to the first UE. Other methods, systems, and apparatuses also are disclosed.Type: GrantFiled: January 31, 2018Date of Patent: April 21, 2020Assignee: NEC CorporationInventors: Narayan Prasad, Mohammad Ali Khojastepour, Meilong Jiang, Xiadong Wang, Sampath Rangarajan
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Publication number: 20190364439Abstract: A method and apparatus for determining Physical Random Access Channel (PRACH) resources and using beams are disclosed herein. In an example, a wireless transmit/receive unit (WTRU) may measure a plurality of beam reference signals transmitted from a base station. Further, the WTRU may select a beam reference signal from among the plurality of measured beam reference signals. Also, the WTRU may receive a configuration message from the base station that includes correspondence information regarding the plurality of beam reference signals, wherein the correspondence information designates at least one set of PRACH resources for each of the plurality of beam reference signals. In addition, the WTRU may determine a set of PRACH resources designated for the selected beam reference signal based on the received correspondence information. Moreover, the WTRU may transmit a PRACH signal using at least one PRACH resource of the determined set of PRACH resources.Type: ApplicationFiled: August 12, 2019Publication date: November 28, 2019Applicant: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 10382978Abstract: A method and apparatus for determining a vertical beam for reception are disclosed herein. A method in a wireless transmit/receive unit (WTRU) includes that the WTRU may receive a broadcast message from an evolved Node B (eNB) that includes information associated with a plurality of beam reference signals, wherein the information includes at least one set of Physical Random Access Control Channel (PRACH) resources associated with each of the plurality of beam reference signals. Further, the WTRU may measure reference signals transmitted on each of the plurality of beam reference signals. Then, the WTRU may select a beam reference signal from among the plurality of beam reference signals. In addition, the WTRU may transmit a PRACH preamble in a set of resources associated with the selected beam reference signal. The WTRU may then receive further communications from the eNB.Type: GrantFiled: August 4, 2017Date of Patent: August 13, 2019Assignee: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Publication number: 20180294847Abstract: Systems, methods, and instrumentalities are disclosed for antenna virtualization, e.g., in at least a two-dimensional antenna array. NE physical antenna elements may be virtualized to NP logical antenna ports. A virtualization may be WTRU-specific, which may optimize MIMO performance. A simplified MIMO scheme may be used with A reduction in feedback, reference signal, and/or control signaling overhead. Antenna virtualization schemes may utilize channel characteristics. Antenna virtualization may be defined, for example, based on antenna port to antenna element mapping, based on a measurement reference signal, based on a codebook or a codebook subset or based on an antenna virtualization matrix. One or more antenna virtualization schemes may be configured in a cell. Antenna virtualization schemes may be configured in a WTRU-specific manner, perhaps for example based on a WTRU channel characteristic(s). A WTRU may report one or more useful (e.g., optimized) antenna virtualization schemes, e.g.Type: ApplicationFiled: November 12, 2015Publication date: October 11, 2018Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Moon-il Lee, Afshin Haghighat, Meilong Jiang, Janet A. Stern-Berkowitz
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Publication number: 20180152922Abstract: A method implemented in a base station for conveying scheduling information in an orthogonal frequency division multiple access (OFDMA) multi-user (MU)-multiple input multiple output (MIMO) system is disclosed. The method includes transmitting to a first user equipment (UE) the scheduling information including first scheduling information of the first UE and at least a portion of second scheduling information of at least one second UE, wherein the scheduling information includes a resource block (RB) assigned to the first UE, the number of streams, and an indication of one or more dedicated reference symbol (RS) layers assigned to the first UE. Other methods, systems, and apparatuses also are disclosed.Type: ApplicationFiled: January 31, 2018Publication date: May 31, 2018Inventors: Narayan PRASAD, Mohammad Ali Khojastepour, Meilong Jiang, Xiadong Wang, Sampath Rangarajan
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Publication number: 20170359734Abstract: A method and apparatus for determining a vertical beam for reception are disclosed herein. A method in a wireless transmit/receive unit (WTRU) includes that the WTRU may receive a broadcast message from an evolved Node B (eNB) that includes information associated with a plurality of beam reference signals, wherein the information includes at least one set of Physical Random Access Control Channel (PRACH) resources associated with each of the plurality of beam reference signals. Further, the WTRU may measure reference signals transmitted on each of the plurality of beam reference signals. Then, the WTRU may select a beam reference signal from among the plurality of beam reference signals. In addition, the WTRU may transmit a PRACH preamble in a set of resources associated with the selected beam reference signal. The WTRU may then receive further communications from the eNB.Type: ApplicationFiled: August 4, 2017Publication date: December 14, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa, Meilong Jiang
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Patent number: 9532257Abstract: A method implemented in a user equipment configured to be used in a multi-user (MU) multiple-input multiple-output (MIMO) wireless communications system is disclosed. The method includes transmitting to a base station a first channel state information (CSI) report determined according to a single-user (SU) MIMO rule, and transmitting to the base station a second CSI report determined according to an MU-MIMO rule. Other methods, apparatuses, and systems also are disclosed.Type: GrantFiled: August 1, 2014Date of Patent: December 27, 2016Assignee: NEC CorporationInventors: Narayan Prasad, Guosen Yue, Meilong Jiang, Mohammad A. Khojastepour, Sampath Rangarajan
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Patent number: 9337906Abstract: A method implemented in a user equipment (UE) used in an orthogonal frequency division multiple access (OFDMA) wireless communications system supporting coordinated multi-point (CoMP) joint transmission (JT) is disclosed. The method includes measuring reference signal received power (RSRP), transmitting, to a network, first feedback on the RSRP, receiving, from the network, a CoMP measurement set, conducting pre-scheduling CoMP UE fallback according to the CoMP measurement set, computing channel quality and direction information according to a UE category, and transmitting, to the network, second feedback on the channel quality and direction information. Other methods, apparatuses, and systems also are disclosed.Type: GrantFiled: March 18, 2013Date of Patent: May 10, 2016Assignee: NEC CorporationInventors: Narayan Prasad, Guosen Yue, Sampath Rangarajan, Meilong Jiang
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Publication number: 20150382205Abstract: A method and apparatus for determining a vertical beam for reception are disclosed herein. A method in a wireless transmit/receive unit (WTRU) includes receiving a broadcast message from an evolved Node B (eNB) that includes information associated with a plurality of vertical beams, wherein the information includes at least one set of Physical Random Access Control Channel (PRACH) resources associated with each of the plurality of vertical beams, measuring reference signals transmitted on each of the plurality of vertical beams to select a reception vertical beam, transmitting a PRACH preamble in a set of resources associated with the selected reception vertical beam, and receiving communications from the eNB using the selected reception vertical beam.Type: ApplicationFiled: January 24, 2014Publication date: December 31, 2015Applicant: InterDigital Patent Holdings, Inc.Inventors: Moon-il LEE, Janet A. STERN-BERKOWITZ, Virgil COMSA, Meilong JIANG
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Publication number: 20150288434Abstract: A method implemented in a user equipment used in a wireless communications system is disclosed. The method comprises receiving from a base station an indication of a first modulation type for the user equipment, receiving from the base station a first data signal for the user equipment, receiving from the base station an indication of a minimum time-frequency unit that is assigned to another user equipment, receiving a second data signal for said another user equipment, where a second modulation type for said another user equipment is unknown to the user equipment, and cancelling and suppressing interference by using the minimum time-frequency unit. Other methods, systems, and apparatuses also are disclosed.Type: ApplicationFiled: June 19, 2015Publication date: October 8, 2015Inventors: Narayan Prasad, Guosen Yue, Mohammad A. Khojastepour, Meilong Jiang, Sampath Rangarajan