Patents by Inventor Sandeep H. Krishnamurthy
Sandeep H. Krishnamurthy 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: 11159969Abstract: A wireless terminal receives signaling information, pertaining to a reference signal transmission in at least one specifically designated sub frame, the signaling information including a list, the list including base station identities. The terminal determines, from at least one of the base station identities in the list, the time-frequency resources associated with a reference signal transmission intended for observed time difference of arrival (OTDOA) measurements from a transmitting base station associated with said one base station identity. The time of arrival of a transmission from the transmitting base station, relative to reference timing, is measured. The wireless terminal can receive a command from a serving cell to start performing inter-frequency OTDOA measurement on a frequency layer containing reference signals, the frequency layer distinct from the serving frequency layer, the serving frequency layer not containing positioning reference signals.Type: GrantFiled: March 30, 2015Date of Patent: October 26, 2021Assignee: GOOGLE TECHNOLOGY HOLDINGS LLCInventors: Robert T. Love, Ajit Nimbalker, Kenneth A. Stewart, Sandeep H. Krishnamurthy, Xiangyang Zhuang
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Publication number: 20180295606Abstract: Disclosed are methods for codebook sub-sampling. In various implementations, a wireless terminal receives a reference signal, determines, based on the reference signal, a first precoding index i2 for a first subband and a second precoding index i?2 for a second subband. The wireless terminal transmits a representation of i2 and a representation of 4 to a base station. In various implementations, i?2 belongs to the set Si2 which, in one implementation, equals {mod(i2?K1k,K), k=0, 1, . . . , K2}, where K1>1, and where K2>1 and K>1 are integers. According to an implementation, the wireless terminal receives the reference signal from a first base station and transmits the representations of i2 and i?2 to a second base station.Type: ApplicationFiled: January 5, 2018Publication date: October 11, 2018Inventors: Sandeep H. Krishnamurthy, Tyler A. Brown, Robert T. Love, Vijay Nangia
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Patent number: 10004058Abstract: Disclosed are methods for allowing a wireless communication device (or “user equipment” or “UE”) to receive signaling information when there is a power imbalance between a primary cell (“Pcell”) and a New Carrier Type (“NCT”) secondary cell (“Scell”). In one aspect, the UE reduces its downlink bandwidth to cover only a carrier of the Pcell, receives control signaling information, if present, and then increases its bandwidth to cover carriers of both the Pcell and Scell.Type: GrantFiled: November 10, 2016Date of Patent: June 19, 2018Assignee: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Hyejung Jung, Murali Narasimha, Ravikiran Nory
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Patent number: 9877305Abstract: Disclosed are methods for codebook sub-sampling. In various implementations, a wireless terminal receives a reference signal, determines, based on the reference signal, a first precoding index i2 for a first subband and a second precoding index i?2 for a second subband. The wireless terminal transmits a representation of i2 and a representation of i?2 to a base station. In various implementations, i?2 belongs to the set Si2 which, in one implementation, equals {mod(i2?K1+k,K), k=0, 1, . . . , K2}, where K1>1, and where K2>1 and K>1 are integers. According to an implementation, the wireless terminal receives the reference signal from a first base station and transmits the representations of i2 and i?2 to a second base station.Type: GrantFiled: August 12, 2016Date of Patent: January 23, 2018Assignee: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Tyler A. Brown, Robert T. Love, Vijay Nangia
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Patent number: 9832713Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.Type: GrantFiled: February 3, 2017Date of Patent: November 28, 2017Assignee: Google Technology Holdings LLCInventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Ravi Kuchibhotla, Robert T. Love, Vijay Nangia, Ajit Nimbalker
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Patent number: 9807633Abstract: A mobile station in a wireless communication network is disclosed. The mobile station includes a transceiver coupled to a processor configured to perform measurements of signals of one or more cells of a wireless communication system during a first set of subframes, to cause the transceiver to transmit a measurement report including at least the measurements of signals of the one or more cells, and to indicate that the measurements of the one or more cells were performed during the first set of subframes.Type: GrantFiled: November 3, 2011Date of Patent: October 31, 2017Assignee: Google Technology Holdings LLCInventors: Murali Narasimha, Sandeep H. Krishnamurthy, Ravi Kuchibhotla
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Patent number: 9794802Abstract: A method in a wireless communication terminal includes receiving an aggregated carrier including a first component carrier and a second component carrier, determining a level of interference from a signal received on the first component carrier to a signal on the second component carrier based on a signal characteristic of the first component carrier and a signal characteristic of the second component carrier, and providing signal interference information to a serving base station if the determined interference level satisfies a condition.Type: GrantFiled: July 30, 2013Date of Patent: October 17, 2017Assignee: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Colin D. Frank
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Patent number: 9781639Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.Type: GrantFiled: April 2, 2014Date of Patent: October 3, 2017Assignee: Google Technology Holdings LLCInventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Ravi Kuchibhotla, Robert T. Love, Vijay Nangia, Ajit Nimbalker
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Publication number: 20170150428Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.Type: ApplicationFiled: February 3, 2017Publication date: May 25, 2017Inventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Ravi Kuchibhotla, Robert T. Lov, Vijay Nangia, Ajit Nimbalker
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Patent number: 9655013Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.Type: GrantFiled: April 2, 2014Date of Patent: May 16, 2017Assignee: Google Technology Holdings LLCInventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Ravi Kuchibhotla, Robert T. Love, Vijay Nangia, Ajit Nimbalker
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Patent number: 9654985Abstract: A wireless communication terminal including a controller coupled to a transceiver wherein the controller is configured to determine a synchronization based on a mapping of channel state information to decoder error rate corresponding to a hypothetical control code word, to attempt to decode a control codeword in a received signal, and to conclude that an out of synchronization event has not occurred if the control codeword is decoded successfully regardless of an indication of the mapping.Type: GrantFiled: May 9, 2013Date of Patent: May 16, 2017Assignee: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Ravi Kuchibhotla
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Patent number: 9621308Abstract: A wireless communication terminal is disclosed. The terminal includes a transceiver coupled to a processor configured to determine that a subset of a plurality of resource elements (REs) must be excluded from demodulation, the plurality of REs received in a signal from a first base station, to estimate a hypothetical block error rate (BLER) based on the signal received from the first base station by excluding the subset of the plurality of REs, and to estimate channel state information based on the hypothetical BLER.Type: GrantFiled: September 15, 2014Date of Patent: April 11, 2017Assignee: Google Technology Holdings LLCInventor: Sandeep H. Krishnamurthy
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Patent number: 9603065Abstract: This disclosure sets forth methods and devices for communication between mobile devices and base stations with active and dormant states. In an embodiment, a base station transmits system information during an active state of the base station with at least one system-information message. The at least one system-information message includes a SystemInformationBlockType1 (“SIB1”) message with a first update-indicator field. The base station selects an update value that indicates whether the system information has changed since a previous transmission of a previous SIB1 message. The base station transmits at least one dormant-state message during a dormant state of the base station with the selected update value in a second update-indicator field of the at least one dormant-state message.Type: GrantFiled: April 2, 2014Date of Patent: March 21, 2017Assignee: Google Technology Holdings LLCInventors: Ravikiran Nory, Sandeep H. Krishnamurthy, Ravi Kuchibhotla, Robert T. Love, Vijay Nangia, Ajit Nimbalker
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Publication number: 20170064672Abstract: Disclosed are methods for allowing a wireless communication device (or “user equipment” or “UE”) to receive signaling information when there is a power imbalance between a primary cell (“Pcell”) and a New Carrier Type (“NCT”) secondary cell (“Scell”). In one aspect, the UE reduces its downlink bandwidth to cover only a carrier of the Pcell, receives control signaling information, if present, and then increases its bandwidth to cover carriers of both the Pcell and Scell.Type: ApplicationFiled: November 10, 2016Publication date: March 2, 2017Applicant: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Hyejung Jung, Murali Narasimha, Ravikiran Nory
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Patent number: 9541632Abstract: A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols. Upon receiving the subframe, a wireless communication device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing (e.g., time of arrival) information.Type: GrantFiled: July 30, 2013Date of Patent: January 10, 2017Assignee: Google Technology Holdings LLCInventors: Colin Frank, Sandeep H. Krishnamurthy, Kenneth A. Stewart, Xiangyang Zhuang, Robert T. Love
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Patent number: 9538478Abstract: The present disclosure sets forth multiple embodiments of the invention. Among those embodiments is a method for determining a maximum power reduction of an uplink signal. The uplink signal is transmitted on a carrier that has a range of frequencies. Frequencies outside of the carrier frequency range include adjacent channel regions. Resource blocks of the carrier that have been allocated for use by to transmit the uplink signal are identified. A power spectral density is determined based on the identified resource blocks. A metric that is based on a third order convolution of the power spectral density function is determined. A maximum power reduction for the adjacent channel regions is also determined based on the metric.Type: GrantFiled: December 8, 2015Date of Patent: January 3, 2017Assignee: Google Technology Holdings LLCInventors: Colin D. Frank, Tyler A. Brown, Sandeep H. Krishnamurthy
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Patent number: 9521632Abstract: A method and apparatus for power allocation for overlapping transmissions is provided herein. During operation, user equipment will determine if transmissions to a single base station, on various frequencies, will be overlapping. If so, a determination is made to back off the power for at least one transmission on one frequency.Type: GrantFiled: August 15, 2011Date of Patent: December 13, 2016Assignee: Google Technology Holdings LLCInventors: Murali Narasimha, Vijay Nangia, Ravikiran Nory, Sandeep H. Krishnamurthy
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Publication number: 20160353413Abstract: Disclosed are methods for codebook sub-sampling. In various implementations, a wireless terminal receives a reference signal, determines, based on the reference signal, a first precoding index i2 for a first subband and a second precoding index i?2 for a second subband. The wireless terminal transmits a representation of i2 and a representation of i?2 to a base station. In various implementations, i?2 belongs to the set Si2 which, in one implementation, equals {mod(i2?K1+k,K), k=0,1 , . . . , K2}, where K1>1, and where K2>1 and K>1 are integers. According to an implementation, the wireless terminal receives the reference signal from a first base station and transmits the representations of i2 and i?2 to a second base station.Type: ApplicationFiled: August 12, 2016Publication date: December 1, 2016Inventors: Sandeep H. Krishnamurthy, Tyler A. Brown, Robert T. Love, Vijay Nangia
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Patent number: 9510328Abstract: Disclosed are methods for allowing a wireless communication device (or “user equipment” or “UE”) to receive signaling information when there is a power imbalance between a primary cell (“Pcell”) and a New Carrier Type (“NCT”) secondary cell (“Scell”). In one aspect, the UE reduces its downlink bandwidth to cover only a carrier of the Pcell, receives control signaling information, if present, and then increases its bandwidth to cover carriers of both the Pcell and Scell.Type: GrantFiled: April 24, 2013Date of Patent: November 29, 2016Assignee: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Hyejung Jung, Murali Narasimha, Ravikiran Nory
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Patent number: 9491641Abstract: A method in a wireless communication terminal includes receiving an aggregated carrier including a first component carrier and a second component carrier, determining a level of interference from a signal received on the first component carrier to a signal on the second component carrier based on a signal characteristic of the first component carrier and a signal characteristic of the second component carrier, and providing signal interference information to a serving base station if the determined interference level satisfies a condition.Type: GrantFiled: July 30, 2013Date of Patent: November 8, 2016Assignee: Google Technology Holdings LLCInventors: Sandeep H. Krishnamurthy, Colin D. Frank