Patents by Inventor Siva Dharshan Muruganathan
Siva Dharshan Muruganathan 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: 10555319Abstract: A method for receiving a PDCH is provided. The method includes receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.Type: GrantFiled: July 30, 2018Date of Patent: February 4, 2020Assignee: BlackBerry LimitedInventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrison
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Publication number: 20190029025Abstract: A method for receiving a PDCH is provided. The method includes receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.Type: ApplicationFiled: July 30, 2018Publication date: January 24, 2019Inventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrison
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Patent number: 10075954Abstract: Systems, methods, and apparatuses for using band-limited subframes in wireless communication networks are provided. During the band-limited subframes, the macro cell base station may mute its transmission or transmit at a low power over some frequency sub-band, while transmitting at a normal or higher power over other frequency sub-band. Correspondingly, the small cell base station may communicate with UEs within its coverage at the frequency sub-band that the macro cell base station transmits at a low power. The band-limited subframe enables the small cell base station to communicate with the UE with reduced interference, and in the meantime, increases the throughput of macro cell base station as it does not require the macro cell base station to completely mute its transmission during the band-limited subframe.Type: GrantFiled: September 20, 2013Date of Patent: September 11, 2018Assignee: Blackberry LimitedInventors: Vahid Pourahmadi, Yongkang Jia, Yi Song, Siva Dharshan Muruganathan, Yufei Wu Blankenship, Hua Xu, Robert Mark Harrison, Shiwei Gao, Masoud Ebrahimi Tazeh Mahalleh
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Patent number: 10064200Abstract: A method for receiving a PDCH is provided. The method comprises: receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.Type: GrantFiled: July 12, 2016Date of Patent: August 28, 2018Assignee: BlackBerry LimitedInventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrison
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Publication number: 20160323895Abstract: A method for receiving a PDCH is provided. The method comprises: receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.Type: ApplicationFiled: July 12, 2016Publication date: November 3, 2016Inventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrison
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Patent number: 9425946Abstract: A method for receiving a PDCH is provided. The method comprises: receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.Type: GrantFiled: February 21, 2013Date of Patent: August 23, 2016Assignee: BlackBerry LimitedInventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrsion
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Patent number: 9369253Abstract: A method for communication in a wireless communications network is provided. The method comprises: transmitting, by a network element in a first cell, a first DMRS on a first DMRS port; transmitting, by the network element, a first PDSCH on the first DMRS port; and transmitting, by the network, information indicating that the first DMRS port is used to transmit the first PDSCH, and information about a second DMRS port that is not used to transmit the first PDSCH but is used to transmit a second DMRS, wherein the first DMRS and the second DMRS are orthogonal to one another.Type: GrantFiled: February 21, 2013Date of Patent: June 14, 2016Assignee: BlackBerry LimitedInventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrsion
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Patent number: 9271294Abstract: A method for sending a signal to a signaled entity, the method determining at least a first code of a sequence of codes comprising the signal, wherein at least one code of the sequence of codes is derived from at least one bit string that is encoded by an encoder to produce a sequence of output bit groups, each output bit group being used to select a code from a set of predefined codes; receiving, at the signaling entity, an assignation of resources from the signaled entity for transmission of at least the first code of the sequence of codes; transmitting, utilizing at least the first code of the sequence of codes and the assignation, the signal, wherein at least the first code is shared among a plurality of signaling entities; and sending, utilizing subsequent codes of the sequence of codes, the signal.Type: GrantFiled: November 14, 2011Date of Patent: February 23, 2016Assignee: BlackBerry LimitedInventors: Biswaroop Mukherjee, Tarik Tabet, William Anthony Gage, Robert Novak, Siva Dharshan Muruganathan
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Patent number: 9258820Abstract: A method, at a signaling entity, for sending a signal to a signaled entity, the method determining, at the signaling entity, at least a first code of a sequence of codes comprising the signal; receiving, at the signaling entity, an assignation of resources from the signaled entity for transmission of at least the first code of the sequence of codes; transmitting, utilizing at least the first code of the sequence of codes and the assignation, the signal, wherein at least the first code of the sequence of codes is shared among a plurality of signaling entities; and sending, utilizing subsequent codes of the sequence of codes, the signal, wherein the sequence of codes is unique to the signal.Type: GrantFiled: November 14, 2011Date of Patent: February 9, 2016Assignee: BlackBerry LimitedInventors: Biswaroop Mukherjee, Tarik Tabet, William Anthony Gage, Robert Novak, Siva Dharshan Muruganathan
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Publication number: 20150085677Abstract: Systems, methods, and apparatuses for using band-limited subframes in wireless communication networks are provided. During the band-limited subframes, the macro cell base station may mute its transmission or transmit at a low power over some frequency sub-band, while transmitting at a normal or higher power over other frequency sub-band. Correspondingly, the small cell base station may communicate with UEs within its coverage at the frequency sub-band that the macro cell base station transmits at a low power. The band-limited subframe enables the small cell base station to communicate with the UE with reduced interference, and in the meantime, increases the throughput of macro cell base station as it does not require the macro cell base station to completely mute its transmission during the band-limited subframe.Type: ApplicationFiled: September 20, 2013Publication date: March 26, 2015Applicant: BlackBerry LimitedInventors: Vahid Pourahmadi, Yongkang Jia, Yi Song, Siva Dharshan Muruganathan, Yufei Wu Blankenship, Hua Xu, Robert Mark Harrison, Shiwei Gao, Masoud Ebrahimi Tazeh Mahalleh
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Patent number: 8989755Abstract: A method for communication in a wireless telecommunication network is provided. The method comprises transmitting, by a first cell, to a first UE, a first signal on a resource block configured to be shared by more than one cell; and transmitting, by a second cell, to a second UE, a second signal on the same resource block, wherein a specification of a location of the resource block is included in configuration information available to the first cell and the second cell.Type: GrantFiled: February 26, 2013Date of Patent: March 24, 2015Assignee: BlackBerry LimitedInventors: Siva Dharshan Muruganathan, Yongkang Jia, Yi Song, Hua Xu, Vahid Pourahmadi, Robert Mark Harrison, Shiwei Gao
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Patent number: 8934456Abstract: A method at a user equipment, and the user equipment, configured for establishing a connected mode with a first network node within a wireless network, the method receiving, at the user equipment, a connection establishment bias; applying the connection establishment bias at the user equipment, while the user equipment is in an idle mode, to at least one network node power level value, thereby creating biased power level values; and connecting to the first network node based on the biased power level values.Type: GrantFiled: May 18, 2012Date of Patent: January 13, 2015Assignee: BlackBerry LimitedInventors: Robert Novak, Siva Dharshan Muruganathan, William Anthony Gage, Biswaroop Mukherjee, Tank Tabet
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Patent number: 8848560Abstract: A system and method for communication in a wireless communication network are disclosed. One embodiment of the system includes an overlay access node that supports Almost Blank Subframes (ABSs). The overlay access node, such as macro eNB, can receive measurement results from one or more user equipments, including macro user equipments (UEs) and/or pico (UEs), either directly or via an underlay access node, such as a pico eNB. The macro eNB can determine a set of macro UEs that are sufficiently close to the macro eNB for transmission during ABSs with a low transmission power or beamforming without significant interference to the pico UEs. This scheme improves the throughput of transmission between the macro eNB and macro UEs while reducing interference to the pico UEs.Type: GrantFiled: February 2, 2012Date of Patent: September 30, 2014Assignee: BlackBerry LimitedInventors: Siva Dharshan Muruganathan, Robert Novak, Tarik Tabet, William Anthony Gage, Biswaroop Mukherjee
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Publication number: 20140243002Abstract: A method for communication in a wireless telecommunication network is provided. The method comprises transmitting, by a first cell, to a first UE, a first signal on a resource block configured to be shared by more than one cell; and transmitting, by a second cell, to a second UE, a second signal on the same resource block, wherein a specification of a location of the resource block is included in configuration information available to the first cell and the second cell.Type: ApplicationFiled: February 26, 2013Publication date: August 28, 2014Applicant: RESEARCH IN MOTION LIMITEDInventors: Siva Dharshan Muruganathan, Yongkang Jia, Yi Song, Hua Xu, Vahid Pourahmadi, Robert Mark Harrison, Shiwei Gao
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Publication number: 20140233407Abstract: A method for receiving a PDCH is provided. The method comprises: receiving, by a UE, information identifying a plurality of resource elements that are transmitted with zero power in a resource block containing the PDCH; receiving, by the UE, a first DMRS on a first DMRS port transmitted from a first cell; and receiving, by the UE, the PDCH that is transmitted on the first DMRS port.Type: ApplicationFiled: February 21, 2013Publication date: August 21, 2014Applicant: RESEARCH IN MOTION LIMITEDInventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrsion
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Publication number: 20140233466Abstract: A method for communication in a wireless communications network is provided. The method comprises: transmitting, by a network element in a first cell, a first DMRS on a first DMRS port; transmitting, by the network element, a first PDSCH on the first DMRS port; and transmitting, by the network, information indicating that the first DMRS port is used to transmit the first PDSCH, and information about a second DMRS port that is not used to transmit the first PDSCH but is used to transmit a second DMRS, wherein the first DMRS and the second DMRS are orthogonal to one another.Type: ApplicationFiled: February 21, 2013Publication date: August 21, 2014Applicant: RESEARCH IN MOTION LIMITEDInventors: Vahid Pourahmadi, Hua Xu, Siva Dharshan Muruganathan, Yongkang Jia, Shiwei Gao, Yi Song, Robert Mark Harrison
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Patent number: 8792399Abstract: Systems, methods, and apparatuses for phase-rotated reference signals are provided. In accordance with one implementation, phase-rotated reference signals are transmitted from multiple transmit antennas on the same reference signal (RS) resource elements. The receiver may determine channel coefficients for links corresponding to the multiple antennas, based on the received signals at the RS resource elements. Time-domain filtering or frequency-domain orthogonal codes may be used to determine the channel coefficients for links corresponding to the multiple antennas. The phase-rotation information may be broadcasted in a system information block (SIB) message or signaled in a radio resource control (RRC) message.Type: GrantFiled: July 11, 2012Date of Patent: July 29, 2014Assignee: BlackBerry LimitedInventors: Siva Dharshan Muruganathan, Tarik Tabet, Chandra Sekhar Bontu, Yi Song, Zhijun Cai
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Patent number: 8787225Abstract: Systems, methods, and apparatuses for phase-rotated reference signals are provided. In accordance with one implementation, phase-rotated reference signals are transmitted from multiple transmit antennas on the same reference signal (RS) resource elements. The receiver may determine channel coefficients for links corresponding to the multiple antennas, based on the received signals at the RS resource elements. Time-domain filtering or frequency-domain orthogonal codes may be used to determine the channel coefficients for links corresponding to the multiple antennas. The phase-rotation information may be broadcasted in a system information block (SIB) message or signaled in a radio resource control (RRC) message.Type: GrantFiled: July 11, 2012Date of Patent: July 22, 2014Assignee: BlackBerry LimitedInventors: Siva Dharshan Muruganathan, Tarik Tabet, Chandra Sekhar Bontu, Yi Song, Zhijun Cai
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Publication number: 20140016681Abstract: Systems, methods, and apparatuses for phase-rotated reference signals are provided. In accordance with one implementation, phase-rotated reference signals are transmitted from multiple transmit antennas on the same reference signal (RS) resource elements. The receiver may determine channel coefficients for links corresponding to the multiple antennas, based on the received signals at the RS resource elements. Time-domain filtering or frequency-domain orthogonal codes may be used to determine the channel coefficients for links corresponding to the multiple antennas. The phase-rotation information may be broadcasted in a system information block (SIB) message or signaled in a radio resource control (RRC) message.Type: ApplicationFiled: July 11, 2012Publication date: January 16, 2014Inventors: Siva Dharshan Muruganathan, Tarik Tabet, Chandra Sekhar Bontu, Yi Song, Zhijun Cai
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Publication number: 20140016451Abstract: Systems, methods, and apparatuses for phase-rotated reference signals are provided. In accordance with one implementation, phase-rotated reference signals are transmitted from multiple transmit antennas on the same reference signal (RS) resource elements. The receiver may determine channel coefficients for links corresponding to the multiple antennas, based on the received signals at the RS resource elements. Time-domain filtering or frequency-domain orthogonal codes may be used to determine the channel coefficients for links corresponding to the multiple antennas. The phase-rotation information may be broadcasted in a system information block (SIB) message or signaled in a radio resource control (RRC) message.Type: ApplicationFiled: July 11, 2012Publication date: January 16, 2014Inventors: Siva Dharshan Muruganathan, Tarik Tabet, Chandra Sekhar Bontu, Yi Song, Zhijun Cai