Patents by Inventor June Chul Roh

June Chul Roh 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).

  • Patent number: 10136418
    Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: November 20, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: June Chul Roh, Pierre Bertrand, Srinath Hosur, Vijay Pothukuchi, Mohamed Farouk Mansour
  • Publication number: 20180279884
    Abstract: A mm-wave system includes transmission of a millimeter wave (mm-wave) signal by a plurality of transmitters to multiple objects, and receiving of return-mm-wave signals from the multiple objects by a plurality of receivers. A processor is configured to perform an algorithm to derive complex-valued samples and angle measurements from each receiver to identify one object from another object. The processor further extracts signal waveforms that correspond to each object and process the extracted signal waveforms to estimate breathing rate and heart rate of the identified object.
    Type: Application
    Filed: September 27, 2017
    Publication date: October 4, 2018
    Applicant: Texas Instruments Incorporated
    Inventors: Adeel Ahmad, Dan Wang, June Chul Roh
  • Patent number: 10057745
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: August 21, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Publication number: 20180041862
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
    Type: Application
    Filed: October 18, 2017
    Publication date: February 8, 2018
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Patent number: 9872130
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: January 16, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Publication number: 20170195082
    Abstract: A method for performing code block segmentation for wireless transmission using concatenated forward error correction encoding includes receiving a transport block of data for transmission having a transport block size, along with one or more parameters that define a target code rate. A number N of inner code blocks needed to transmit the transport block is determined. A number M—outer code blocks may be calculated based on the number of inner code blocks and on encoding parameters for the outer code blocks. The transport block may then be segmented and encoded according to the calculated encoding parameters.
    Type: Application
    Filed: March 17, 2017
    Publication date: July 6, 2017
    Inventors: June Chul Roh, Pierre Bertrand
  • Publication number: 20170105090
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
    Type: Application
    Filed: October 24, 2016
    Publication date: April 13, 2017
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Patent number: 9609670
    Abstract: A system and method for providing wireless communications between a medical controller hub and an implant node are disclosed. The hub transmits signals to facilitate communication connections with the node. The signals include connection invitation polls with identification parameters. A node monitors the hub's transmissions for the connection invitation polls. When a poll is detected, the node compares the identification parameters to a list of preferred identification values. If the received identification parameter is on the preferred list, and the node and hub are not already connected, then the node responds to the connection invitation poll. If the received identification parameter is not on the preferred list, then the node continues to monitor hub transmissions for other connection invitation polls that include identification parameters that are on the preferred list.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: March 28, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Jin-Meng Ho, June Chul Roh
  • Patent number: 9602235
    Abstract: A method for performing code block segmentation for wireless transmission using concatenated forward error correction encoding includes receiving a transport block of data for transmission having a transport block size, along with one or more parameters that define a target code rate. A number N of inner code blocks needed to transmit the transport block is determined. A number M—outer code blocks may be calculated based on the number of inner code blocks and on encoding parameters for the outer code blocks. The transport block may then be segmented and encoded according to the calculated encoding parameters.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: March 21, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: June Chul Roh, Pierre Bertrand
  • Publication number: 20170041738
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
    Type: Application
    Filed: October 20, 2016
    Publication date: February 9, 2017
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Publication number: 20160353433
    Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
    Type: Application
    Filed: August 12, 2016
    Publication date: December 1, 2016
    Inventors: June Chul Roh, Pierre Bertrand, Srinath Hosur, Vijay Pothukuchi, Mohamed Farouk Mansour
  • Patent number: 9510139
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment using M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK. Also, the PHY layer uses a constant symbol rate for BAN packet transmissions.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: November 29, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Patent number: 9510138
    Abstract: In at least some embodiments, a communication device includes a transceiver with a physical (PHY) layer. The PHY layer is configured for body area network (BAN) operations in a limited multipath environment based on a constant symbol rate for BAN packet transmissions and based on M-ary PSK, differential M-ary PSK or rotated differential M-ary PSK modulation. The PHY layer is configured to transmit and receive data in a frequency band selected from the group consisting of: 402-405 MHz, 420-450 MHz, 863-870 MHz, 902-928 MHz, 950-956 MHz, 2360-2400 MHz, and 2400-2483.5 MHz.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: November 29, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anuj Batra, Timothy M. Schmidl, Srinath Hosur, June Chul Roh
  • Patent number: 9467164
    Abstract: A method includes simulating transmission of multiple symbols representing multiple bits over at least one communication channel, where the multiple symbols are associated with a polar code. The method also includes identifying error rates of equivalent bit channels associated with the simulated transmission of the symbols. The method further includes selecting a specified number of the bits as frozen bits in the polar code using the identified error rates. Simulating the transmission of the symbols could include computing log likelihood ratio (LLR) values associated with the equivalent bit channels and simulating polar decoding of received symbols using the LLR values. Identifying the error rates could include calculating means and variances of the LLR values associated with the equivalent bit channels and identifying probability density functions of the LLR values using the means and variances. The selected bits could represent the specified number of bits identified as having worst error rates.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: October 11, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Corina Ioana Ionita, June Chul Roh, Mohamed F. Mansour, Srinath Hosur
  • Patent number: 9444494
    Abstract: A network coding method includes receiving a plurality of input packets each having a packet length. Encoding the plurality of input packets by applying a convolutional code across symbols in corresponding positions of the plurality of input packets obtaining a number of encoded packets. The number of encoded packets obtained being more than the number of input packets.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: September 13, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Samantha Rose Summerson, Anuj Batra, June Chul Roh
  • Patent number: 9438304
    Abstract: A symbol modulation system applicable to a body area network is disclosed herein. The symbol modulation system includes a symbol mapper. The symbol mapper is configured to determine a time within a predetermined symbol transmission interval at which a transmission representative of the symbol will occur. The time is determined based on a value of a symbol and a value of a time-hopping sequence. The time is selected from a plurality of symbol value based time slots, and a plurality of time-hopping sequence sub-time-slots within each symbol value based time slot. The symbol mapper is configured to generate a single guard interval within the symbol transmission interval. The single guard interval is positioned to terminate the symbol transmission interval.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: September 6, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: June Chul Roh, Anuj Batra, Sudipto Chakraborty, Srinath Hosur
  • Patent number: 9419750
    Abstract: A method for uplink (UL) wireless backhaul communication at a wireless backhaul remote unit in a radio access network comprising receiving a configuration for radio frames and a transmission schedule through a downlink (DL) physical layer broadcast channel, wherein the transmission schedule comprises a transmission allocation for the remote unit, generating a UL data frame, wherein generating the UL data frame comprises performing forward error correction (FEC) encoding on a data bit stream to generate a plurality of FEC codewords, wherein performing the FEC encoding comprises performing Reed Solomon (RS) encoding on the data bit stream to generate a plurality of RS codewords, performing byte interleaving on the RS codewords, and performing Turbo encoding on the byte interleaved RS codewords to generate one or more Turbo codewords, wherein each Turbo codeword is encoded from more than one RS codeword, and transmitting the UL data frame according to the transmission allocation.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: August 16, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: June Chul Roh, Pierre Bertrand, Srinath Hosur, Vijay Pothukuchi, Mohamed Farouk Mansour
  • Publication number: 20160219584
    Abstract: A method of operating a wireless communication system is disclosed. The method includes communicating by a first data frame having a first transmit time interval with a first wireless transceiver and communicating by a second data frame having a second transmit time interval different from the first transmit time interval with a second wireless transceiver. Data is transferred between the first data frame and the second data frame.
    Type: Application
    Filed: June 29, 2015
    Publication date: July 28, 2016
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: PIERRE BERTRAND, JUNE CHUL ROH, JUN YAO
  • Publication number: 20160218849
    Abstract: A method of operating a wireless communication system is disclosed. The method includes receiving respective downlink transmissions at N second transceivers from a first transceiver, where N is a positive integer greater than 1. The reception acknowledgement signals by the N second transceivers are combined into a single reception acknowledgement signal and transmitted to the first transceiver.
    Type: Application
    Filed: October 6, 2015
    Publication date: July 28, 2016
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: PIERRE BERTRAND, JUNE CHUL ROH, JUN YAO
  • Publication number: 20160219558
    Abstract: A method of operating a wireless communication system is disclosed. The method includes receiving allocation information for a plurality of second wireless transceivers from a first wireless transceiver by one of the second wireless transceivers on a physical broadcast channel (PBCH). The one of the second wireless transceivers decodes the allocation information for the plurality of second wireless transceivers.
    Type: Application
    Filed: August 4, 2015
    Publication date: July 28, 2016
    Applicant: TEXAS INSTRUMENTS INCORPORATED
    Inventors: PIERRE BERTRAND, JUNE CHUL ROH, JUN YAO