Patents by Inventor Tarik Muharemovic
Tarik Muharemovic 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: 20140341010Abstract: Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is an ordered group of sequences that is a proper subset of the pre-defined set of sequences. Within a given cell, up to 64 sequences may need to be signaled. In order to minimize the associated overhead due to signaling multiple sequences, only one logical index is transmitted by a base station serving the cell and a user equipment within the cell derives the subsequent indexes according to the pre-defined ordering. Each sequence has a unique logical index. The ordering of sequences is identified by the logical indexes of the sequences, with each logical index uniquely mapped to a generating index.Type: ApplicationFiled: July 8, 2014Publication date: November 20, 2014Inventors: Jing Jiang, Pierre Bertrand, Tarik Muharemovic
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Publication number: 20140341172Abstract: A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index value to the particular UE within the cell. The specific SRI subframe offset and the index value enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number for the UE to use as a unique physical resource for an SRI in the physical uplink control channel (PUCCH).Type: ApplicationFiled: August 5, 2014Publication date: November 20, 2014Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Pierre Bertrand, Zukang Shen, Tarik Muharemovic
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Publication number: 20140321397Abstract: A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using an orthogonal covering sequence and a second sequence. Embodiments of the present invention mitigate interference by calculating a first orthogonal covering (OC) index and a second OC Index from an indicator received from a serving base station (NodeB). A first index n1 is derived and a second index n2 is derived using the first index n1. A first orthogonal covering (OC) index and a first cyclic shift (CS) is determined using the derived index n1. A second OC and a second CS is derived using the derived index n2. A first slot of a subframe is generated using the OC indexed by the first OC index and the first CS and a second slot of the subframe is generated using the OC indexed by the second OC index and the second CS.Type: ApplicationFiled: July 8, 2014Publication date: October 30, 2014Inventors: ZUKANG SHEN, Tarik Muharemovic, Pierre Bertrand
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Patent number: 8817818Abstract: A transmitter includes a bandwidth configuration unit configured to provide an increased system bandwidth corresponding to a bandwidth extension over multiple component carriers. Additionally, the transmitter also includes a transmit unit configured to employ the bandwidth extension.Type: GrantFiled: April 21, 2009Date of Patent: August 26, 2014Assignee: Texas Instruments IncorporatedInventors: Eko N. Onggosanusi, Anand G. Dabak, Badri Varadarajan, Runhua Chen, Tarik Muharemovic
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Publication number: 20140226518Abstract: Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment.Type: ApplicationFiled: April 30, 2014Publication date: August 14, 2014Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: EKO N. ONGGOSANUSI, RUNHUA CHEN, TARIK MUHAREMOVIC
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Patent number: 8797968Abstract: A method for allocating resources for a scheduling request indicator (SRI) is disclosed. An SRI cycle period for use by user equipment (UE) within a cell is transmitted from a NodeB in a cell to UE within the cell. The NodeB transmits a specific SRI subframe offset and an index value to the particular UE within the cell. The specific SRI subframe offset and the index value enable the UE to determine a unique combination of cyclic shift, RS orthogonal cover, data orthogonal cover, and resource block number for the UE to use as a unique physical resource for an SRI in the physical uplink control channel (PUCCH).Type: GrantFiled: February 18, 2013Date of Patent: August 5, 2014Assignee: Texas Instruments IncorporatedInventors: Pierre Bertrand, Zukang Shen, Tarik Muharemovic
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Patent number: 8798023Abstract: A method for setting a periodicity and an offset in rank indicator (RI) reporting in a user equipment in a wireless communication system receives a radio resource control (RRC) signal from a base station, decodes a RI periodicity and offset configuration index, sets the periodicity and offset in accordance with said decoded periodicity and offset configuration index and reports a RI according to the set periodicity and offset. The periodicity is an integer and reporting a RI reports with equal the product of the periodicity and a period of reporting of the channel quality indicator (CQI) and the precoding matrix indicator (PMI).Type: GrantFiled: August 3, 2012Date of Patent: August 5, 2014Assignee: Texas Instruments IncorporatedInventors: Runhua Chen, Tarik Muharemovic, Eko N Onggosanusi
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Patent number: 8773968Abstract: Transmission of random access preamble structures within a cellular wireless network is based on the use of cyclic shifted constant amplitude zero autocorrelation (“CAZAC”) sequences to generate the random access preamble signal. A pre-defined set of sequences is arranged in a specific order. Within the predefined set of sequences is an ordered group of sequences that is a proper subset of the pre-defined set of sequences. Within a given cell, up to 64 sequences may need to be signaled. In order to minimize the associated overhead due to signaling multiple sequences, only one logical index is transmitted by a base station serving the cell and a user equipment within the cell derives the subsequent indexes according to the pre-defined ordering. Each sequence has a unique logical index. The ordering of sequences is identified by the logical indexes of the sequences, with each logical index uniquely mapped to a generating index.Type: GrantFiled: July 31, 2008Date of Patent: July 8, 2014Assignee: Texas Instruments IncorporatedInventors: Jing Jiang, Pierre Bertrand, Tarik Muharemovic
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Patent number: 8774156Abstract: A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations. The transmission from the secondary to primary node in a wireless network is obtained using an orthogonal covering sequence and a second sequence. Embodiments of the present invention mitigate interference by calculating a first orthogonal covering (OC) index and a second OC index from an indicator received from a serving base station (NodeB). A first index n1 is derived and a second index n2 is derived using the first index n1. A first orthogonal covering (OC) index and a first cyclic shift (CS) is determined using the derived index n1. A second OC and a second CS is derived using the derived index n2. A first slot of a subframe is generated using the OC indexed by the first OC index and the first CS and a second slot of the subframe is generated using the OC indexed by the second OC index and the second CS.Type: GrantFiled: January 28, 2009Date of Patent: July 8, 2014Assignee: Texas Instruments IncorporatedInventors: Zukang Shen, Tarik Muharemovic, Pierre Bertrand
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Patent number: 8767653Abstract: UE-initiated accesses within a cellular network are optimized to account for Doppler shift. A user equipment (UE) receives information that designates a particular access slot as high-speed and designates another access slot as low-speed within a given cell. The UE determines its relative speed to a serving base station (NodeB) within the cell. The UE selects either a baseline structure or an alternate structure if the relative speed is less than a threshold value or only an alternate structure if the relative speed exceeds the threshold value. The UE transmits a signal to the NodeB using the selected structure, such that the baseline structure is transmitted only in the designated low-speed access slot and that the alternate structure is transmitted only in the designated high-speed request slot.Type: GrantFiled: February 24, 2012Date of Patent: July 1, 2014Assignee: Texas Instruments IncorporatedInventors: Pierre Bertrand, Tarik Muharemovic, Jing Jiang
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Patent number: 8724542Abstract: A transmission of information within a wireless cellular network may include a first and second group of samples. A first group of samples is created comprising at least a first and a last subgroup, wherein the last subgroup is same as the first subgroup. A second group of samples created. A transformed set of samples produced by jointly transforming the created first and second group with a discrete Fourier transform (DFT). The transformed set of samples is expanded to produce an expanded set, and the expanded set is transformed with an inverse discrete Fourier transform (IDFT) to produce an OFDM symbol with a fractional payload. The first group of samples is a reference signal (RS), which is known to the receiver before the transmission occurs, while the second group of samples is information data.Type: GrantFiled: August 18, 2010Date of Patent: May 13, 2014Assignee: Texas Instruments IncorporatedInventors: Tarik Muharemovic, Zukang Shen, Jing Jiang
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Patent number: 8724684Abstract: Embodiments of the present disclosure provide a reporting allocation unit, an indicator interpretation unit and methods of operating a reporting allocation unit and an indicator interpretation unit. In one embodiment, the reporting allocation unit includes an indicator configuration module configured to provide reporting interval and offset values of corresponding rank and channel quality indicators for user equipment. The reporting allocation unit also includes a sending module configured to transmit the reporting interval and offset values to the user equipment.Type: GrantFiled: March 17, 2009Date of Patent: May 13, 2014Assignee: Texas Instruments IncorporatedInventors: Eko N. Onggosanusi, Runhua Chen, Tarik Muharemovic
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Patent number: 8717993Abstract: A method and apparatus for defining transmission parameters of user equipment reference signals. The method includes estimating channel delay spreads of a plurality of user equipments scheduled for transmission at a particular transmission time period or sub-frame in an uplink for communication with a NodeB, and allocating transmission parameters to each scheduled user equipment of the plurality of user equipments in accordance to the delay spreads of the plurality of user equipments scheduled for transmission in the particular time period or sub-frame, wherein the parameters comprises a cyclic shift allocated to each m-th user equipment equal to the sum of a delay spread and a timing uncertainty of each of the previous m-1 user equipments.Type: GrantFiled: December 8, 2011Date of Patent: May 6, 2014Assignee: Texas Instruments IncorporatedInventors: Tarik Muharemovic, Aris Papasakellariou
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Patent number: 8718011Abstract: This invention is a method for time-sharing sounding resources. A first embodiment defines one common sounding period for all user equipment and all sounding resources. A second embodiment allows for different sounding periods so long as each individual sounding resource uses only one sounding period. A third embodiment offers the most flexibility in sharing of the sounding resources by permitting changes in time. The first option is a special case of the second option. The second option is a special case of the third option.Type: GrantFiled: December 20, 2011Date of Patent: May 6, 2014Assignee: Texas Instruments IncorporatedInventors: Tarik Muharemovic, Zukang Shen, Pierre Bertrand
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Publication number: 20140029589Abstract: Transmitting a ACK/NACK response in a wireless cellular network by mapping the data value into a cyclic shifted version of a reference signal. A subframe is formed with a plurality of symbols with certain symbols designated as reference signal (RS) symbols. The receiver and transmitter both know when an ACK/NACK response is expected. If an ACK/NACK response is not expected, then an RS is inserted in the duration of symbols designated as RS symbols. If an ACK/NACK response is expected, then the ACK/NACK response is embedded in one or more of the symbols designated as RS symbols. The subframe is transmitted to a receiver, and the receiver can determine the ACK/NACK value in the RS symbol, if present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.Type: ApplicationFiled: September 26, 2013Publication date: January 30, 2014Applicant: Texas Instruments IncorporatedInventors: Tarik Muharemovic, Zukang Shen, Pierre Bertrand
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Patent number: 8630240Abstract: A transmission of information from a secondary to a primary node occurs in a plurality of N logical time durations on an uplink channel in a wireless network. A scheme for mapping between logical uplink control channel (PUCCH) resource blocks (RBs) and physical RBs (PRBs) used by PUCCH is described. A logical uplink control resource block index nLRB is derived by the secondary node in response to information from the primary node. The secondary node then maps the logical uplink control resource block index nLRB to a first uplink physical resource block index nPRB,1 of a plurality of uplink physical resource blocks. The secondary node then transmits an uplink control information in a subframe using one of the plurality of uplink physical resource blocks indexed by nPRB,1.Type: GrantFiled: February 18, 2009Date of Patent: January 14, 2014Assignee: Texas Instruments IncorporatedInventors: Zukang Shen, Tarik Muharemovic, Jing Jiang
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Publication number: 20130301538Abstract: A method for transmitting a plurality of sequences across a plurality of bands of a wireless spectrum is described in which a first sequence Is produced using a set of reference signal sequences, wherein the set of reference signal sequences comprises at least CAZAC sequences and near-CAZAC sequences. A second sequence is also produced. The first sequence is transmitted in a first band of the wireless spectrum, and the second sequence is transmitted in a second band of the wireless spectrum. The first and the second sequences are transmitted concurrently by a same user equipment.Type: ApplicationFiled: May 1, 2012Publication date: November 14, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Tarik Muharemovic, Zukang Shen
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Patent number: 8571120Abstract: Transmitting a acknowledge/not acknowledge (ACK/NACK) response in a wireless cellular network by mapping the data value into a cyclic shifted version of a reference signal. A subframe is formed with a plurality of symbols with certain symbols designated as reference signal (RS) symbols. The receiver and transmitter both know when an ACK/NACK response is expected. If an ACK/NACK response is not expected, then an RS is inserted in the duration of symbols designated as RS symbols. If an ACK/NACK response is expected, then the ACK/NACK response is embedded in one or more of the symbols designated as RS symbols. The subframe is transmitted to a receiver, and the receiver can determine the ACK/NACK value in the RS symbol, if present, and also use the RS symbol for coherent demodulation of a CQI (channel quality indicator) or data.Type: GrantFiled: September 20, 2007Date of Patent: October 29, 2013Assignee: Texas Instruments IncorporatedInventors: Tarik Muharemovic, Zukang Shen, Pierre Bertrand
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Publication number: 20130242973Abstract: A cell within cellular network includes user equipments (UEs) that transmit data to a base station (eNB). Over a period of time, not all of the UEs will have data to transmit. The UEs are tracked as a scheduled portion and an unscheduled portion, wherein a UE is included in the scheduled portion in response to receiving a scheduling request from the UE. Synchronization is maintained between the eNB and each UE in the scheduled portion by sending a timing adjustment (TA) command if needed. Synchronization is maintained between the eNB and each UE in the unscheduled portion by allocating a periodic reference signal (sync-RS) to each UE in the unscheduled portion and by sending a respective timing adjustment (TA) command if needed to each respective UE in the unscheduled portion in response to a respective sync-RS received from each UE in the unscheduled portion.Type: ApplicationFiled: June 22, 2012Publication date: September 19, 2013Applicant: TEXAS INSTRUMENTS INCORPORATEDInventors: Pierre Bertrand, Tarik Muharemovic, Zukang Shen
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Publication number: 20130230118Abstract: A transmitter is for use with multiple transmit antennas and includes a precoder unit configured to precode data for a transmission using a precoding matrix selected from a codebook, wherein the codebook corresponds to the following three transmission properties for an uplink transmission: 1) all precoding elements from the precoding matrix have a same magnitude, 2) each precoding element from the precoding matrix is taken from a set of finite values and 3) there is only one non-zero element in any row of the precoding matrix. The transmitter also includes a transmit unit configured to transmit the precoded data.Type: ApplicationFiled: April 17, 2013Publication date: September 5, 2013Applicant: Texas Instruments IncorporatedInventors: Eko N. Onggosanusi, Badri N. Varadarajan, Runhua Chen, Zukang Shen, Tarik Muharemovic