Patents by Inventor II Han Kim
II Han Kim 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).
-
Publication number: 20240014854Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.Type: ApplicationFiled: September 20, 2023Publication date: January 11, 2024Inventors: II Han Kim, Tarkesh Pande, Anuj Batra
-
Publication number: 20230421201Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: ApplicationFiled: September 5, 2023Publication date: December 28, 2023Inventors: Badri N. Varadarajan, Anand Dabak, II Han Kim
-
Publication number: 20210288691Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.Type: ApplicationFiled: May 28, 2021Publication date: September 16, 2021Inventors: II Han Kim, Tarkesh Pande, Anuj Batra
-
Publication number: 20210266039Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: ApplicationFiled: May 10, 2021Publication date: August 26, 2021Inventors: Badri N Varadarajan, Anand Dabak, II Han Kim
-
Publication number: 20200382163Abstract: A communication system and method includes a receiver for receiving a communication signal coupled through a physical medium in accordance with a protocol. An interface formed in a single substrate receives from the receiver an indication of the signal strength of the received communication signal. The interface also decodes the information contained in the received communication signal. For example, the interface sends the information decoded from the received communication signal to a first application for consuming the decoded information. The interface also sends the indication of the signal strength of the received communication signal to a second application for generating a quality determination of the physical medium in response to the indication of the signal strength of the received communication signal.Type: ApplicationFiled: June 16, 2020Publication date: December 3, 2020Inventors: Wonsoo Kim, II Han Kim
-
Publication number: 20200280339Abstract: A method of generating a channel hopping sequence for a link in a wireless sensor network includes receiving performance quality data for respective frequency channels of frequency channels in the link in a monitoring system, determining a channel quality indicator (CQI) by the monitoring system for each frequency channel based on the respective performance quality data, and determining a repetition factor by the monitoring system for each frequency channel based on the respective CQI. A repetition factor for a frequency channel indicates a number of times the frequency channel is repeated in the channel hopping sequence.Type: ApplicationFiled: May 18, 2020Publication date: September 3, 2020Inventors: Jyotirmoy Banik, II Han Kim, Jianwei Zhou, Xiaolin Lu
-
Publication number: 20200153480Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: ApplicationFiled: January 16, 2020Publication date: May 14, 2020Inventors: Badri N Varadarajan, Anand Dabak, II Han Kim
-
Publication number: 20200127979Abstract: A network system comprising a first network element and a second network element. The first network element is programmed to provide the step of first, communicating to the second network element a plurality of configuration parameter sets. Each configuration parameter set corresponds to a respective frame fragment and comprises a parameter value that differs in value from the parameter value in another configuration parameter set in the plurality of configuration parameter sets. The first network element also is programmed to provide the step of second, communicating a frame, to the second network element, in a plurality of frame fragments, wherein each frame fragment in the plurality of frame fragments is communicated according to a respective parameter value in the plurality of configuration parameter sets.Type: ApplicationFiled: December 20, 2019Publication date: April 23, 2020Inventors: Kumaran Vijayasankar, Mehul Soman, Arvind Kandhalu Raghu, II Han Kim
-
Publication number: 20190280736Abstract: Embodiments of the invention provide multiple cyclic prefix lengths for either both the data-payload and frame control header or only the data payload. Frame control header (FCH) and data symbols have an associated cyclic prefix. A table is transmitted in the FCH symbols, which includes a cyclic prefix field to identify the cyclic prefix length used in the data payload. A receiver may know the cyclic prefix length used in the FCH symbols in one embodiment. In other embodiments, the receiver does not know the FCH cyclic prefix length and, therefore, attempts to decode the FCH symbols using different possible cyclic prefix lengths until the FCH symbols are successfully decoded.Type: ApplicationFiled: March 15, 2019Publication date: September 12, 2019Inventors: Tarkesh Pande, Anand G. Dabak, II-Han Kim
-
Publication number: 20190199402Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: ApplicationFiled: November 27, 2018Publication date: June 27, 2019Inventors: Badri N Varadarajan, Anand Dabak, II Han Kim
-
Publication number: 20190173643Abstract: A method of encoding a first bit and a second bit for transmission on a transmission band is provided. The method includes receiving a bit stream that includes the first and second bits, mapping the first bit into a first symbol, mapping the second bit into a second symbol, differentially encoding at least the first symbol and the second symbol, and causing the first and second symbols to be transmitted on a transmission band as part of a symbol stream.Type: ApplicationFiled: February 5, 2019Publication date: June 6, 2019Inventors: Jing Lin, Tarkesh Pande, II Han Kim, Anuj Batra
-
Publication number: 20190140693Abstract: Embodiments include methods of powerline communications using a preamble with band extension is provided. A method may include receiving a packet data unit PDU. Bit-level repetition is applied to at least a portion of the PDU to create a repeated portion. Interleaving is performed per a subchannel. Pilot tones are inserted in the interleaved portion. Each data tone is modulated with respect to a nearest one of the inserted pilot tones. The PDU is transmitted over a power line.Type: ApplicationFiled: January 4, 2019Publication date: May 9, 2019Inventors: II Han Kim, Tarkesh Pande, Anuj Batra
-
Patent number: 10141978Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: GrantFiled: October 27, 2017Date of Patent: November 27, 2018Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Badri N Varadarajan, Anand Dabak, II Han Kim
-
Publication number: 20180159594Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: ApplicationFiled: October 27, 2017Publication date: June 7, 2018Inventors: Badri N Varadarajan, Anand Dabak, II Han Kim
-
Patent number: 9831914Abstract: Systems and methods for application profiles and device classes in power line communications (PLCs) are described. In some embodiments, a PLC device has the device class defined by a PHY layer and may include a processor and a memory coupled to the processor. The memory may be configured to store program instructions, which may be executable by the processor to cause the PLC device to communicate with a higher-level PLC apparatus over a power line using a frequency band. The frequency band may be selected based upon an application profile and/or a device class associated with the PLC device. In some implementations, the higher-level PLC apparatus may include a PLC gateway or a data concentrator, and the PLC device may include a PLC modem or the like. Examples of application profiles include access communications, in-premises connectivity, AC charging, and/or DC charging. Device classes may represent a minimum communication data rate and/or an operating frequency band restriction of the PLC device.Type: GrantFiled: April 6, 2015Date of Patent: November 28, 2017Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ii Han Kim, Anand G. Dabak, Badri N. Varadarajan
-
Publication number: 20170207820Abstract: In a disclosed embodiment, a power line communication (PLC) transmitter includes a forward error correction (FEC) encoder that receives payload data and adds parity information to the data to create an encoded output, a fragmenter that receives the encoded output from the FEC encoder and segments the encoded output into a plurality of fragments, a fragment repetition encoder that receives the plurality of fragments from the fragmenter and copies each of the fragments a selected number of times, and an interleaver that receives the copies of the plurality of fragments from the fragment repetition encoder and interleaves the copies of the plurality of fragments for transmission on a power line.Type: ApplicationFiled: March 31, 2017Publication date: July 20, 2017Inventors: Badri N Varadarajan, Anand Dabak, II Han Kim
-
Publication number: 20150098515Abstract: A system includes an analog front end (AFE) unit to be coupled to a power line network, and a controller coupled to the AFE unit. More specifically, the AFE unit is to receive a packet signal from the power line network wherein, based on a first gain parameter, the AFE unit is to amplify the received packet signal. The controller is configured to calculate a root-mean-square (RMS) power of the amplified packet signal. Further, the AFE unit is to calculate a second gain parameter based on the calculated RMS power of the amplified packet signal and the first gain parameter, wherein the second gain parameter is to be used to amplify the received packet signal instead of the first gain parameter.Type: ApplicationFiled: October 9, 2014Publication date: April 9, 2015Inventors: Anuj BATRA, II Han KIM, Mehul Madhav SOMAN, Minghua FU
-
Patent number: 8995461Abstract: Systems and methods for channel selection in power line communications (PLC) are described. In some embodiments, a method may include defining a plurality of frames, each frame having a plurality of time slots. The method may also include assembling a pair of beacon and bandscan packets within each of time slot of each frame. The method may further include sequentially transmitting each of the frames over a corresponding one of a plurality of different frequency bands. In some implementations, each bandscan packet may include a slot index indicating a position of its time slot within its respective frame and/or a band index indicating one of the plurality of different frequency bands. In response to having transmitted the plurality of frames, the method may include receiving one or more packets indicating a selection of one or more of the plurality of different frequency bands to be used in subsequent communications.Type: GrantFiled: February 1, 2012Date of Patent: March 31, 2015Assignee: Texas Instruments IncorporatedInventors: Shu Du, Anand G. Dabak, Xiaolin Lu, II Han Kim
-
Publication number: 20150071306Abstract: A method of encoding a set of L bits for transmission on a transmission band through a transmission medium is provided, wherein L is a positive integer that is greater than 1. The method includes: mapping, via a mapping component, the L bits into M symbols; dividing, via a first dividing component, the transmission band into sub-bands; allocating, via an allocating component, the M symbols to individual sub-bands, respectively, for transmission at a first time; and allocating, via the allocating component, the M symbols to different individual sub-bands, respectively, for transmission at a second time.Type: ApplicationFiled: August 1, 2014Publication date: March 12, 2015Inventors: Jing Lin, Tarkesh Pande, II Han Kim, Anuj Batra