Patents by Inventor Ravi Teja Sukhavasi
Ravi Teja Sukhavasi 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: 10469185Abstract: The present disclosure, for example, relates to one or more techniques for scaling the bandwidth of a carrier. Available sub-channels of an unlicensed radio frequency spectrum band may be determined, and the available sub-channels may be included in the carrier. The available sub-channels may be adjacent or non-adjacent sub-channels. The bandwidth of the carrier may be determined according to which sub-channels are included in the carrier. In this way, the bandwidth of the carrier may be scaled according to the available sub-channels in the unlicensed radio frequency spectrum band.Type: GrantFiled: June 21, 2017Date of Patent: November 5, 2019Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Tao Luo, Ravi Teja Sukhavasi, Makesh Pravin John Wilson, Kiran Kumar Somasundaram, Onkar Jayant Dabeer, Durga Prasad Malladi, Naga Bhushan, Yongbin Wei, Peter Gaal, Wanshi Chen, Hao Xu, Aleksandar Damnjanovic
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Patent number: 10375690Abstract: Apparatuses and methods for special subframe configuration in unlicensed spectrum are disclosed. For example, the disclosure presents an example method including identifying a time period for an extended clear channel assessment (ECCA) operation. Further, the example method may include determining a guard period portion included in a special subframe of a frame structure based on the identified time period. An apparatus may include means for identifying a time period for an extended clear channel assessment (ECCA) operation. Further, the example apparatus may include means for determining a guard period portion included in a special subframe of a frame structure based on the identified time period.Type: GrantFiled: August 5, 2015Date of Patent: August 6, 2019Assignee: QUALCOMM IncorporatedInventors: Wanshi Chen, Tao Luo, Ravi Teja Sukhavasi
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Publication number: 20190236405Abstract: A method performed by an apparatus is described. The method includes receiving a first set of object data corresponding to a first journey. The method also includes receiving a second set of object data corresponding to a second journey. The method further includes determining a similarity metric between the first set of object data and the second set of object data. The similarity metric indicates a distance between the first set of object data and the second set of object data for at least one object. The method additionally includes clustering the first set of object data and the second set of object data for the at least one object based on the similarity metric to produce at least one object cluster. The method also includes producing map data based on the at least one object cluster.Type: ApplicationFiled: April 4, 2019Publication date: August 1, 2019Inventors: Onkar Jayant Dabeer, Kiran Somasundaram, Radhika Dilip Gowaikar, Ravi Teja Sukhavasi
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Publication number: 20190190679Abstract: Techniques and devices are described for wireless communication. A base station may determine a parameter associated with a transmission such as hybrid automatic repeat request (HARD) feedback, a signal-to-noise ratio, or a determination regarding whether the transmission was successfully decoded. The base station may then determine a contention window adjustment value based on the parameter. The base station may then apply weighting factor (e.g., based on the time of the transmission, a number of devices being served, aspects of the transmission parameter, etc.) to the contention window adjustment value may adjust a contention window size for a second transmission based on the weighted contention window adjustment value (and, in some cases, other weighted adjustments based on other transmissions). The base station may then perform a clear channel assessment (CCA) based on the contention window size.Type: ApplicationFiled: February 4, 2019Publication date: June 20, 2019Inventors: Srinivas Yerramalli, Tao Luo, Aleksandar Damnjanovic, Peter Gaal, Ravi Teja Sukhavasi, Xiaoxia Zhang
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Patent number: 10296812Abstract: A method performed by an apparatus is described. The method includes receiving a first set of object data corresponding to a first journey. The method also includes receiving a second set of object data corresponding to a second journey. The method further includes determining a similarity metric between the first set of object data and the second set of object data. The similarity metric indicates a distance between the first set of object data and the second set of object data for at least one object. The method additionally includes clustering the first set of object data and the second set of object data for the at least one object based on the similarity metric to produce at least one object cluster. The method also includes producing map data based on the at least one object cluster.Type: GrantFiled: June 12, 2017Date of Patent: May 21, 2019Assignee: QUALCOMM IncorporatedInventors: Onkar Jayant Dabeer, Kiran Somasundaram, Radhika Dilip Gowaikar, Ravi Teja Sukhavasi
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Patent number: 10292158Abstract: Techniques and devices are described for wireless communication. A base station may determine a parameter associated with a transmission such as hybrid automatic repeat request (HARQ) feedback, a signal-to-noise ratio, or a determination regarding whether the transmission was successfully decoded. The base station may then determine a contention window adjustment value based on the parameter. The base station may then apply weighting factor (e.g., based on the time of the transmission, a number of devices being served, aspects of the transmission parameter, etc.) to the contention window adjustment value may adjust a contention window size for a second transmission based on the weighted contention window adjustment value (and, in some cases, other weighted adjustments based on other transmissions). The base station may then perform a clear channel assessment (CCA) based on the contention window size.Type: GrantFiled: May 10, 2016Date of Patent: May 14, 2019Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Tao Luo, Aleksandar Damnjanovic, Peter Gaal, Ravi Teja Sukhavasi, Xiaoxia Zhang
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Publication number: 20190090138Abstract: Methods and apparatus for wireless communication are described. A method may include receiving at a user equipment (UE) a number of allocated interlaces for an uplink transmission over a shared spectrum, each of which may include a plurality of non-contiguous resource blocks (RB) of the shared spectrum. In some cases, the number of allocated interlaces is unsupported by joint interlace precoding hardware of the UE and the allocated interlaces may be partitioned into subsets of interlaces which may be a size supported by the joint interlace precoding hardware. Reference signals may be generated for the RBs of the allocated interlaces according to a reference signal sequence based on an ordering of the RBs for the allocated interlaces within the shared spectrum.Type: ApplicationFiled: November 16, 2018Publication date: March 21, 2019Inventors: Srinivas Yerramalli, Tao Luo, Durga Prasad Malladi, Naga Bhushan, Yongbin Wei, Peter Gaal, Wanshi Chen, Aleksandar Damnjanovic, Tingfang Ji, Ravi Teja Sukhavasi
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Patent number: 10129857Abstract: A method and apparatus for uplink transmission by a user equipment (UE) includes receiving a first assignment for one or more beacon signals. The first assignment includes a first resource assignment and a first interlace assignment. The UE may determine that a size of a payload of an uplink transmission is less than a threshold. The UE may transmit the one or more beacon signals according to the first assignment in response to the determination. The one or more beacon signals increase bandwidth occupancy by the UE over a contention-based spectrum. Additionally, the UE may receive a second assignment for the payload of the uplink transmission. The second assignment includes a second resource assignment and a second interlace assignment. The UE may transmit the payload of the uplink transmission according to the second resource assignment on the second interlace assignment.Type: GrantFiled: November 5, 2015Date of Patent: November 13, 2018Assignee: Qualcomm IncorporatedInventors: Jing Sun, Tao Luo, Ravi Teja Sukhavasi, Yongbin Wei, Durga Prasad Malladi
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Patent number: 10057779Abstract: Techniques are described for wireless communication. A method for wireless communication includes identifying a frame structure for transmissions using an unlicensed radio frequency spectrum band, the frame structure including at least two special subframes; and performing a procedure to gain access to the unlicensed radio frequency spectrum band during at least a portion of at least one of the at least two special subframes.Type: GrantFiled: March 17, 2015Date of Patent: August 21, 2018Assignee: QUALCOMM IncorporatedInventors: Yongbin Wei, Durga Prasad Malladi, Aleksandar Damnjanovic, Naga Bhushan, Wanshi Chen, Tao Luo, Peter Gaal, Ravi Teja Sukhavasi
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Publication number: 20180189601Abstract: A method performed by an apparatus is described. The method includes receiving a first set of object data corresponding to a first journey. The method also includes receiving a second set of object data corresponding to a second journey. The method further includes determining a similarity metric between the first set of object data and the second set of object data. The similarity metric indicates a distance between the first set of object data and the second set of object data for at least one object. The method additionally includes clustering the first set of object data and the second set of object data for the at least one object based on the similarity metric to produce at least one object cluster. The method also includes producing map data based on the at least one object cluster.Type: ApplicationFiled: June 12, 2017Publication date: July 5, 2018Inventors: Onkar Jayant Dabeer, Kiran Somasundaram, Radhika Dilip Gowaikar, Ravi Teja Sukhavasi
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Publication number: 20180192035Abstract: A method performed by an apparatus is described. The method includes receiving a set of image frames including at least one object. The method also includes receiving a camera position for each image frame. The method further includes associating the at least one object between image frames based on one or more object points and the received camera position for each image frame to produce two-dimensional (2D) object location data. The method additionally includes estimating three-dimensional (3D) pose data of the at least one object based on the 2D object location data. The method also includes refining the 3D pose data based on a shape constraint.Type: ApplicationFiled: June 13, 2017Publication date: July 5, 2018Inventors: Onkar Jayant Dabeer, Gerhard Reitmayr, Ravi Teja Sukhavasi, Kiran Somasundaram, Radhika Dilip Gowaikar
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Patent number: 9860776Abstract: The present disclosure provides methods and apparatuses for multi-carrier transmissions over adjacent channels that reduce self-jamming due to asymmetric interference. In an aspect, a large bandwidth load-base equipment (LBE) carrier may be provided such that CCA is performed jointly over the entire bandwidth. In another aspect, additional CCA timeslots may be used to synchronize the two carriers. In a further aspect, an extended CCA may be performed on a primary unlicensed carrier while a simple CCA may be performed on a secondary unlicensed carrier. In yet another aspect, LBE may be deployed on some carriers while frame-base equipment (FBE) may be deployed on other carriers.Type: GrantFiled: June 18, 2015Date of Patent: January 2, 2018Assignee: QUALCOMM IncorporatedInventors: Srinivas Yerramalli, Tao Luo, Kiran Kumar Somasundaram, Durga Prasad Malladi, Naga Bhushan, Yongbin Wei, Aleksandar Damnjanovic, Wanshi Chen, Xiaoxia Zhang, Hao Xu, Ravi Teja Sukhavasi
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Publication number: 20170339683Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, a control format indicator value for a frame may be received over a physical carrier in a shared spectrum. Based on the control format indicator value, a number of subframes of the frame to be used by a base station for downlink transmissions over the physical carrier may be determined. The control format indicator value may indicate an end of transmission, if data is to be transmitted during the frame, a number of subframes to be used for transmission, or whether the current subframe is the final subframe used for transmission. In some cases, a user equipment (UE) may use the control format indicator value to determine a sleep schedule. Further, ACK/NACK transmissions by a UE may be scheduled based on the control format indicator value.Type: ApplicationFiled: July 25, 2017Publication date: November 23, 2017Inventors: Wanshi Chen, Hao Xu, Peter Gaal, Tao Luo, Srinivas Yerramalli, Tingfang Ji, Aleksandar Damnjanovic, Yongbin Wei, Naga Bhushan, Durga Prasad Malladi, Ravi Teja Sukhavasi
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Publication number: 20170288794Abstract: The present disclosure, for example, relates to one or more techniques for scaling the bandwidth of a carrier. Available sub-channels of an unlicensed radio frequency spectrum band may be determined, and the available sub-channels may be included in the carrier. The available sub-channels may be adjacent or non-adjacent sub-channels. The bandwidth of the carrier may be determined according to which sub-channels are included in the carrier. In this way, the bandwidth of the carrier may be scaled according to the available sub-channels in the unlicensed radio frequency spectrum band.Type: ApplicationFiled: June 21, 2017Publication date: October 5, 2017Inventors: Srinivas Yerramalli, Tao Luo, Ravi Teja Sukhavasi, Makesh Pravin John Wilson, Kiran Kumar Somasundaram, Onkar Jayant Dabeer, Durga Prasad Malladi, Naga Bhushan, Yongbin Wei, Peter Gaal, Wanshi Chen, Hao Xu, Aleksandar Damnjanovic
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Publication number: 20170048919Abstract: Various aspects related to techniques for harmonization between common reference signal (CRS) and demodulation reference signal (DM-RS) based transmission modes (TMs) in unlicensed spectrum are described. In one aspect, a downlink/uplink (DL/UL) subframe configuration may be signaled for each subframe. Information provided by the DL/UL subframe configuration may indicate whether the respective downlink subframe is a single-frequency network (MBSFN) subframe (associated with DM-RS-based TM) or a non-MBSFN subframe (associated with CRS-based TM). In another aspect, periodic as well as aperiodic channel state information (CSI) reporting requests may be supported. In yet another aspect, discontinued reception (DRX) wake ups for unlicensed carriers may be explicitly or implicitly indicated to a user equipment (UE) via a carrier in a licensed spectrum.Type: ApplicationFiled: August 9, 2016Publication date: February 16, 2017Inventors: Peter GAAL, Srinivas YERRAMALLI, Durga Prasad MALLADI, Yongbin WEI, Alexei Yurievitch GOROKHOV, Brian BANISTER, Michael Lee MCCLOUD, Tao LUO, Supratik BHATTACHARJEE, Chengjin ZHANG, Ravi Teja SUKHAVASI
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Publication number: 20160345326Abstract: Techniques and devices are described for wireless communication. A base station may determine a parameter associated with a transmission such as hybrid automatic repeat request (HARQ) feedback, a signal-to-noise ratio, or a determination regarding whether the transmission was successfully decoded. The base station may then determine a contention window adjustment value based on the parameter. The base station may then apply weighting factor (e.g., based on the time of the transmission, a number of devices being served, aspects of the transmission parameter, etc.) to the contention window adjustment value may adjust a contention window size for a second transmission based on the weighted contention window adjustment value (and, in some cases, other weighted adjustments based on other transmissions). The base station may then perform a clear channel assessment (CCA) based on the contention window size.Type: ApplicationFiled: May 10, 2016Publication date: November 24, 2016Inventors: Srinivas Yerramalli, Tao Luo, Aleksandar Damnjanovic, Peter Gaal, Ravi Teja Sukhavasi, Xiaoxia Zhang
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Publication number: 20160135172Abstract: A method and apparatus for uplink transmission by a user equipment (UE) includes receiving a first assignment for one or more beacon signals. The first assignment includes a first resource assignment and a first interlace assignment. The UE may determine that a size of a payload of an uplink transmission is less than a threshold. The UE may transmit the one or more beacon signals according to the first assignment in response to the determination. The one or more beacon signals increase bandwidth occupancy by the UE over a contention-based spectrum. Additionally, the UE may receive a second assignment for the payload of the uplink transmission. The second assignment includes a second resource assignment and a second interlace assignment. The UE may transmit the payload of the uplink transmission according to the second resource assignment on the second interlace assignment.Type: ApplicationFiled: November 5, 2015Publication date: May 12, 2016Inventors: Jing SUN, Tao LUO, Ravi Teja SUKHAVASI, Yongbin WEI, Durga Prasad MALLADI
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Publication number: 20160044667Abstract: Apparatuses and methods for special subframe configuration in unlicensed spectrum are disclosed. For example, the disclosure presents an example method including identifying a time period for an extended clear channel assessment (ECCA) operation. Further, the example method may include determining a guard period portion included in a special subframe of a frame structure based on the identified time period. An apparatus may include means for identifying a time period for an extended clear channel assessment (ECCA) operation. Further, the example apparatus may include means for determining a guard period portion included in a special subframe of a frame structure based on the identified time period.Type: ApplicationFiled: August 5, 2015Publication date: February 11, 2016Inventors: Wanshi CHEN, Tao LUO, Ravi Teja SUKHAVASI
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Publication number: 20160021661Abstract: The present disclosure, for example, relates to one or more techniques for scaling the bandwidth of a carrier. Available sub-channels of an unlicensed radio frequency spectrum band may be determined, and the available sub-channels may be included in the carrier. The available sub-channels may be adjacent or non-adjacent sub-channels. The bandwidth of the carrier may be determined according to which sub-channels are included in the carrier. In this way, the bandwidth of the carrier may be scaled according to the available sub-channels in the unlicensed radio frequency spectrum band.Type: ApplicationFiled: April 24, 2015Publication date: January 21, 2016Inventors: Srinivas Yerramalli, Tao Luo, Ravi Teja Sukhavasi, Makesh Pravin John Wilson, Kiran Kumar Somasundaram, Onkar Dabeer, Durga Prasad Malladi, Naga Bhushan, Yongbin Wei, Peter Gaal, Wanshi Chen, Hao Xu, Aleksandar Damnjanovic
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Publication number: 20150373741Abstract: The present disclosure provides methods and apparatuses for multi-carrier transmissions over adjacent channels that reduce self-jamming due to asymmetric interference. In an aspect, a large bandwidth load-base equipment (LBE) carrier may be provided such that CCA is performed jointly over the entire bandwidth. In another aspect, additional CCA timeslots may be used to synchronize the two carriers. In a further aspect, an extended CCA may be performed on a primary unlicensed carrier while a simple CCA may be performed on a secondary unlicensed carrier. In yet another aspect, LBE may be deployed on some carriers while frame-base equipment (FBE) may be deployed on other carriers.Type: ApplicationFiled: June 18, 2015Publication date: December 24, 2015Inventors: Srinivas YERRAMALLI, Tao LUO, Kiran Kumar SOMASUNDARAM, Durga Prasad MALLADI, Naga BHUSHAN, Yongbin WEI, Aleksandar DAMNJANOVIC, Wanshi CHEN, Xiaoxia ZHANG, Hao XU, Ravi Teja SUKHAVASI