Patents by Inventor Sung Lark Kwon
Sung Lark Kwon 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: 9185713Abstract: Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACE signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACE signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.Type: GrantFiled: May 15, 2013Date of Patent: November 10, 2015Assignee: Ericsson-LG Co., Ltd.Inventors: Sung Lark Kwon, Dong Joo Park, Hyuck Chan Kwon, Young Kwon Ryu, Hoo Young Jeong, Hong Jik Kim, Jung Seung Lee, Jae Won Jang, Byoung Seong Park, Hee Gul Park
-
Publication number: 20150003421Abstract: Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACE signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACH signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.Type: ApplicationFiled: May 15, 2013Publication date: January 1, 2015Applicant: ERICSSON-LG CO., LTD.Inventors: Sung Lark KWON, Dong Joo PARK, Hyuck Chan KWON, Young Kwon RYU, Hoo Young JEONG, Hong Jik KIM, Jung Seung LEE, Jae Won JANG, Byoung Seong PARK, Hee Gul PARK
-
Publication number: 20130250922Abstract: Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACE signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACH signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.Type: ApplicationFiled: May 15, 2013Publication date: September 26, 2013Inventors: Sung Lark KWON, Dong Joo PARK, Hyuck Chan KWON, Young Kwon RYU, Hoo Young JEONG, Hong Jik KIM, Jung Seung LEE, Jae Won JANG, Byoung Seong PARK, Hee Gul PARK
-
Publication number: 20130250921Abstract: Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACE signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACE signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.Type: ApplicationFiled: May 15, 2013Publication date: September 26, 2013Inventors: Sung Lark KWON, Dong Joo Park, Hyuck Chan Kwon, Young Kwon Ryu, Hoo Young Jeong, Hong Jik Kim, Jung Seong Lee, Jae Won Jang, Byoung Seong Park, Hee Gul Park
-
Patent number: 8457076Abstract: Embodiments of the present invention may provide an apparatus and a method for transmitting and receiving a random access channel (RACH) in a single carrier-frequency division multiple access (SC-FDMA) system. A frequency domain RACH signal may be mapped to a localized sub-frequency band of an entire frequency band available to the SC-FDMA system. A guard band including at least one sub carrier may be allocated between the RACH signal band and other channel signal bands. A guard time may be allocated between the RACH signal and other channel signals in the time domain. The RACH signal may include a short message including information related to a mobile station. The RACH signal may be detected in a frequency based method, a time based method or a sliding matched filter based method. Receiver complexity can be decreased if the RACH signal includes a CAZAC code sequence for a preamble. In such a case, a receive delay may be simply calculated and then adjusted more accurately.Type: GrantFiled: January 17, 2007Date of Patent: June 4, 2013Assignee: LG-Ericsson Co., Ltd.Inventors: Sung Lark Kwon, Dong Joo Park, Hyuck Chan Kwon, Young Kwon Ryu, Hoo Young Jeong, Hong Jik Kim, Jung Seung Lee, Jae Won Jang, Byoung Seong Park, Hee Gul Park
-
Patent number: 7827466Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: GrantFiled: March 6, 2009Date of Patent: November 2, 2010Assignee: LG Electronics Inc.Inventors: Young Woo Yun, Ki Jun Kim, Sung Lark Kwon, Young Jo Lee, Sung Kwon Hong
-
Patent number: 7814391Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: GrantFiled: March 6, 2009Date of Patent: October 12, 2010Assignee: LG Electronics Inc.Inventors: Young Woo Yun, Ki Jun Kim, Sung Lark Kwon, Young Jo Lee, Sung Kwon Hong
-
Patent number: 7814390Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: GrantFiled: March 6, 2009Date of Patent: October 12, 2010Assignee: LG Electronics Inc.Inventors: Young Woo Yun, Ki Jun Kim, Sung Lark Kwon, Young Jo Lee, Sung Kwon Hong
-
Patent number: 7620872Abstract: An apparatus and method for maximizing throughout for HARQ transmissions is provided. Systematic and prodeduralized RV selection is facilitated by determining the parameter āsā by using two important factors affecting the system throughout, specifically the coding gain varying according to the code rate and the balance between energy per systematic bit and energy per parity bit.Type: GrantFiled: December 29, 2005Date of Patent: November 17, 2009Assignee: LG-Nortel Co., Ltd.Inventors: Sung-Lark Kwon, Hee-Gul Park, Hong-Jik Kim, Hoo-Young Jeong
-
Publication number: 20090235147Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: ApplicationFiled: March 6, 2009Publication date: September 17, 2009Inventors: Young Woo Yun, Ki Jun Kim, Sung Lark Kwon, Young Jo Lee, Sung Kwon Hong
-
Publication number: 20090175298Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: ApplicationFiled: March 6, 2009Publication date: July 9, 2009Inventors: Young Woo YUN, Ki Jun KIM, Sung Lark KWON, Young Jo LEE, Sung Kwon HONG
-
Publication number: 20090177950Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: ApplicationFiled: March 6, 2009Publication date: July 9, 2009Inventors: Young Woo YUN, Ki Jun KIM, Sung Lark KWON, Young Jo LEE, Sung Kwon HONG
-
Patent number: 7523383Abstract: A rate matching method is provided for a mobile communication system that performs an adjustment to a code rate based on an optimal level by puncturing or repetition to respective bit streams of transport channels. The rate matching method is preferably applicable to uplink and downlink rate matching for channel coding including turbo coding, convolutional coding and the like. The rate matching method for uplink can include executing coding for bits of a transport channel, and branching off the bits into a plurality of sequences, constructing a first interleaving pattern for the plurality of sequences, constructing a virtual interleaving pattern for at least one sequence based on a mapping rule with a corresponding first interleaving pattern and calculating different bit shifting values in each column of each virtual interleaving pattern. Then, a bit position to be punctured is determined in each constructed virtual interleaving pattern using the calculated bit shifting values.Type: GrantFiled: April 13, 2006Date of Patent: April 21, 2009Assignee: LG Electronics Inc.Inventors: Young Woo Yun, Ki Jun Kim, Sung Lark Kwon, Young Jo Lee, Sung Kwon Hong
-
Patent number: 7388856Abstract: A TFCI transmission scheme using optimal TFCI transmission bit patterns for the DPCH and DSCH in the hard split mode of the W-CDMA standard. The DPCH TFCI bits (TFCI1) and the DSCH TFCI bits (TFCI2) are mapped to their corresponding bit positions and then transmitted such that TFCI code word errors are minimized and communication reliability is improved. When the TFCI1 to TFCI2 ratio is 5:5, the TFCI transmission bit pattern has alternating TFCI1 and TFCI2 bits. For other ratios, such as 1:9, 2:8, 3:7, and 4:6, the bit patterns are obtained by considering situations where the number of TFCI bits is 6 or 7, while bit patterns for respective conjugate ratios (9:1, 8:2, 7:3, and 6:4) are obtained by reversing all 0 and 1 bits of the previously obtained bit pattern for that ratio.Type: GrantFiled: May 13, 2004Date of Patent: June 17, 2008Assignee: LG Electronics Inc.Inventors: Bong-Hoe Kim, Sung-Lark Kwon
-
Patent number: 7340498Abstract: Apparatus and method for determining a fixed point in a mobile communication system are disclosed. An initial fixed point is set through simulation and a saturation for an output of a target device is compared with a reference saturation. Then, the position of the initial fixed point is adaptively changed according to the change in the output range of the target device. Therefore, when a floating point is converted into a fixed point, the performance of the system can be improved while the complexity of the hardware can be reduced.Type: GrantFiled: May 28, 2003Date of Patent: March 4, 2008Assignee: LG Electronics Inc.Inventors: Tan Joong Park, Sung Lark Kwon, Hee Gul Park
-
Patent number: RE41590Abstract: A method for matching a rate in a mobile communication system causes puncturing or repetition in a fixed pattern, in which puncturing or repetition is applied to each bitstream on transport channels supporting different services in a next generation mobile communication system of the W-CDMA (Wideband Code Division Multiple Access) system.Type: GrantFiled: March 31, 2008Date of Patent: August 24, 2010Assignee: LG Electronics, Inc.Inventors: Young Woo Yun, Sung Kwon Hong, Sung Lark Kwon, Young Jo Lee, Ki Jun Kim
-
Patent number: RE41753Abstract: A method for matching a rate in a mobile communication system causes puncturing or repetition in a fixed pattern, in which puncturing or repetition is applied to each bitstream on transport channels supporting different services in a next generation mobile communication system of the W-CDMA (Wideband Code Division Multiple Access) system.Type: GrantFiled: June 3, 2008Date of Patent: September 21, 2010Assignee: LG Electronics, Inc.Inventors: Young Woo Yun, Sung Kwon Hong, Sung Lark Kwon, Young Jo Lee, Ki Jun Kim
-
Patent number: RE43419Abstract: Method for improving a TFCI transportation performance, including the steps of (1) coding TFCI information bits to be transported through each radio frame, (2) repeating a TFCI code word produced by the coding for an arbitrary times, (3) applying puncturing patterns different from each other to the repeated code words produced as many as the repeated times, and puncturing the repeated code words at locations different from each other, and (4) dividing, inserting, and transporting the punctured fixed length repeated code words in each slot of the radio frame, whereby improving TFCI information transportation performance, and embodying the receiver side decoder to be identical to a case when a 32 bit code word are transported perfectly.Type: GrantFiled: August 3, 2010Date of Patent: May 29, 2012Assignee: LG Electronics Inc.Inventors: Sung Kwon Hong, Sung Lark Kwon, Young Woo Yun, Ki Jun Kim
-
Patent number: RE43622Abstract: A method for matching a rate in a mobile communication system causes puncturing or repetition in a fixed pattern, in which puncturing or repetition is applied to each bitstream on transport channels supporting different services in a next generation mobile communication system of the W-CDMA (Wideband Code Division Multiple Access) system.Type: GrantFiled: July 21, 2010Date of Patent: August 28, 2012Assignee: LG Electronics Inc.Inventors: Young Woo Yun, Sung Kwon Hong, Sung Lark Kwon, Young Jo Lee, Ki Jun Kim
-
Patent number: RE43866Abstract: Method for improving a TFCI transportation performance, including the steps of (1) coding TFCI information bits to be transported through each radio frame, (2) repeating a TFCI code word produced by the coding for an arbitrary times, (3) applying puncturing patterns different from each other to the repeated code words produced as many as the repeated times, and puncturing the repeated code words at locations different from each other, and (4) dividing, inserting, and transporting the punctured fixed length repeated code words in each slot of the radio frame, whereby improving TFCI information transportation performance, and embodying the receiver side decoder to be identical to a case when a 32 bit code word are transported perfectly.Type: GrantFiled: November 13, 2009Date of Patent: December 18, 2012Assignee: LG Electronics Inc.Inventors: Sung Kwon Hong, Sung Lark Kwon, Young Woo Yun, Ki Jun Kim