Patents by Inventor Kwang-Seop Eom
Kwang-Seop Eom 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: 20230223986Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: ApplicationFiled: March 17, 2023Publication date: July 13, 2023Inventors: KUMARAN VIJAYASANKAR, ROBERT LIANG, JYOTHSNA KUNDURU, KWANG SEOP EOM
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Patent number: 11637585Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: GrantFiled: June 24, 2021Date of Patent: April 25, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kumaran Vijayasankar, Robert Liang, Jyothsna Kunduru, Kwang Seop Eom
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Publication number: 20210320687Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: ApplicationFiled: June 24, 2021Publication date: October 14, 2021Inventors: KUMARAN VIJAYASANKAR, ROBERT LIANG, JYOTHSNA KUNDURU, KWANG SEOP EOM
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Patent number: 11082086Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: GrantFiled: September 19, 2019Date of Patent: August 3, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Kumaran Vijayasankar, Robert Liang, Jyothsna Kunduru, Kwang Seop Eom
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Publication number: 20200014422Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: ApplicationFiled: September 19, 2019Publication date: January 9, 2020Inventors: Kumaran Vijayasankar, Robert Liang, Jyothsna Kunduru, Kwang Seop Eom
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Patent number: 10491265Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: GrantFiled: October 24, 2016Date of Patent: November 26, 2019Assignee: Texas Instruments IncorporatedInventors: Kumaran Vijayasankar, Robert Liang, Jyothsna Kunduru, Kwang Seop Eom
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Publication number: 20170310358Abstract: A radio communications device includes a RTC configured to run even during sleep for receiving from a coordinator node (CN) in an asynchronous channel hopping WPAN an asynchronous hopping sequence (AHS) frame that includes the CN's hopping sequence. A processor implements a stored sleepy device operation in asynchronous channel hopping networks algorithm. The algorithm is for determining a time stamp for the AHS frame and the CN's initial timing position within the hopping sequence, storing the time stamp, going to sleep and upon waking up changing a frequency band of its receive (Rx) channel to an updated fixed channel. A data request command frame is transmitted by the device on the CN's listening channel that is calculated from the CN's hopping sequence, time stamp, CN's initial timing position and current time, and the device receives an ACK frame transmitted by the CN at the updated fixed channel of Rx operation.Type: ApplicationFiled: October 24, 2016Publication date: October 26, 2017Inventors: KUMARAN VIJAYASANKAR, ROBERT LIANG, JYOTHSNA KUNDURU, KWANG SEOP EOM
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Patent number: 7613148Abstract: A method for performing a handover by a subscriber station (SS) in a broadband wireless communication system including a serving base station (BS) communicating with the SS, and at least one neighbor BS neighboring the serving BS. The SS receives downlink signals from the serving BS and the neighbor BS; measures an arrival time difference between the downlink signal received from the serving BS and the downlink signal received from the neighbor BS; and transmits the measured arrival time difference to the serving BS.Type: GrantFiled: February 14, 2005Date of Patent: November 3, 2009Assignee: Samsung Electronics Co., LtdInventors: Seung-Eun Hong, Bong-Gee Song, Kwang-Seop Eom, Min-Hee Cho, Hyeong-Jong Ju
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Patent number: 7551937Abstract: Information for different subscribers of a service with the same modulation and channel encoding method is transmitted by allocating radio resources in a wireless portable Internet system. Also, identifier information on the subscriber of a concurrently allocated radio resource is transmitted through common control information. Therefore, information for a plurality of subscribers coexists in a single radio resource block, and it can be easily transmitted. Since a subscriber station which has received downlink information can know to which radio resource block the information for the corresponding station is allocated through the subscriber identifier information transmitted as common control information, the subscriber station can access desired information by accessing a specific radio resource block to which information for the subscriber is allocated in the received frame.Type: GrantFiled: July 16, 2004Date of Patent: June 23, 2009Assignees: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd., SK Telecom Co., Ltd., KT Corporation, Ktfreetel Co., Ltd., Hanaro Telecom., Inc.Inventors: Jae-Heung Kim, Soon-Yong Lim, Chul-Sik Yoon, Kun-Min Yeo, Seok-Joo Shin, Boong-Gee Song, Kwang-Seop Eom, Min-Hee Cho, Jae-Hee Cho, Byung-Han Ryu, Seung-Ku Hwang
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Patent number: 7526288Abstract: An apparatus and method for controlling operation states of a medium access control layer by a mobile subscriber station (MSS) in a broadband wireless access communication system. The method includes: state-transitioning into a sleep state or an idle state when there is no data transmitted between a base station and the MSS during a predetermined first time interval in an awake state; and performing a location change in the idle state when the mobile subscriber station moves from a first paging zone to a second paging zone, and state-transiting into the awake state when the mobile subscriber station in the idle state detects a paging to the mobile subscriber station. The method minimizes power consumption and maximizes efficiency in use of radio resources.Type: GrantFiled: December 10, 2004Date of Patent: April 28, 2009Assignee: Samsung Electronics Co., LtdInventors: Kwang-Seop Eom, Seung-Eun Hong, Bong-Gee Song, Hong-Sung Chang, Hyeong-Jong Ju, Min-Hee Cho
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Publication number: 20080130605Abstract: A method for receiving common control information from a base station to a plurality of subscriber stations in a wireless communication is provided. The common control information includes first information that all of the plurality of subscriber stations commonly receive and second information that the plurality of subscriber stations separately receive according to channel states of the plurality of subscriber stations. The first information is decoded by demodulating and decoding the common control information according to a modulation scheme and a coding scheme corresponding to an MCS (Modulation and Coding Scheme) level applied to the first information in the base station. The second information is decoded by demodulating and decoding the common control information according to a modulation scheme and a coding scheme corresponding to MCS levels applied to the second information in the base station.Type: ApplicationFiled: January 23, 2008Publication date: June 5, 2008Applicant: Samsung Electronics Co., LTDInventors: Bong-Gee Song, Yun-Sang Park, Kwang-Seop Eom, Saung-Eun Hong, Min-Hoe Cho, Hyeong-Jong Ju, Jae-Hee Cho
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Patent number: 7346361Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.Type: GrantFiled: April 24, 2006Date of Patent: March 18, 2008Assignee: Samsung Electronics Co., LtdInventors: Hyon-Goo Kang, Bong-Gee Song, Kwang-Seop Eom, Seung-Eun Hong, Yeong-Moon Son, So-Hyun Kim, Seung-Il Yoon, Tae-Won Kim, Gaun-Hwi Lim, Jung-Shin Park, Jae-Jeong Shim, Hong-Sung Chang, Yong Chang
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Patent number: 7343167Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.Type: GrantFiled: April 24, 2006Date of Patent: March 11, 2008Assignee: Samsung Electronics Co., LtdInventors: Hyon-Goo Kang, Bong-Gee Song, Kwang-Seop Eom, Seung-Eun Hong, Yeong-Moon Son, So-Hyun Kim, Seung-Il Yoon, Tae-Won Kim, Geun-Hwi Lim, Jung-Shin Park, Jae-Jeong Shim, Hong-Sung Chang, Yong Chang
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Patent number: 7307973Abstract: A mobile communication system using an orthogonal frequency division multiplexing (OFDM)/orthogonal frequency division multiple access (OFDMA) scheme. The method for assigning ranging codes in the OFDM/OFDMA communication system includes classifying rangings between a base station and a mobile subscriber station (MSS) of the OFDM/OFDMA communication system into an initial ranging, a periodic ranging, a bandwidth request ranging, and a handover ranging. A first number of ranging codes used for the rangings are created and a second number of ranging codes selected from the first number of ranging codes are assigned as handover ranging codes used for the handover ranging.Type: GrantFiled: November 29, 2004Date of Patent: December 11, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Bong-Gee Song, Kwang-Seop Eom, Min-Hee Cho, Hyeong-Jong Ju, Seung-Eun Hong
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Publication number: 20070010268Abstract: Information for different subscribers of a service with the same modulation and channel encoding method is transmitted by allocating radio resources in a wireless portable Internet system. Also, identifier information on the subscriber of a concurrently allocated radio resource is transmitted through common control information. Therefore, information for a plurality of subscribers coexists in a single radio resource block, and it can be easily transmitted. Since a subscriber station which has received downlink information can know to which radio resource block the information for the corresponding station is allocated through the subscriber identifier information transmitted as common control information, the subscriber station can access desired information by accessing a specific radio resource block to which information for the subscriber is allocated in the received frame.Type: ApplicationFiled: July 16, 2004Publication date: January 11, 2007Inventors: Jae-Heung Kim, Soon-Yong Lim, Chul-Sik Yoon, Kun-Min Yeo, Seok-Joo Shin, Boong-Gee Song, Kwang-Seop Eom, Min-Hee Cho, Jae-Hee Cho, Byung-Han Ryu, Seung-Ku Hwang
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Publication number: 20060239241Abstract: Provided are an apparatus and a method for bandwidth requesting apparatus in a subscriber station in a broadcasting wireless communication system. The method includes checking whether there is an incomplete bandwidth request process, checking whether ranging allocation message with respect to a previous bandwidth request is received if there is the incomplete bandwidth request process and transmitting a bandwidth request code with respect to the new bandwidth request if the ranging allocation message with respect to the previous bandwidth request is received. Accordingly, because the new bandwidth request can be initiated even when the previous bandwidth request process is not terminated, the waste of the uplink resource can be prevented and the throughput of the subscriber station can be improved.Type: ApplicationFiled: April 21, 2006Publication date: October 26, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Kwang-Seop Eom, Seol-Hyun Noh
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Publication number: 20060194581Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.Type: ApplicationFiled: April 24, 2006Publication date: August 31, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyon-Goo Kang, Bong-Gee Song, Kwang-Seop Eom, Seung-Eun Hong, Yeong-Moon Son, So-Hyun Kim, Seung-II Yoon, Tae-Won Kim, Geun-Hwi Lim, Jung-Shin Park, Jae-Jeong Shim, Hong-Sung Chang, Yong Chang
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Publication number: 20060189318Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.Type: ApplicationFiled: April 24, 2006Publication date: August 24, 2006Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyon-Goo Kang, Bong-Gee Song, Kwang-Seop Eom, Seung-Eun Hong, Yeong-Moon Son, So-Hyun Kim, Seung-Il Yoon, Tae-Won Kim, Geun-Hwl Lim, Jung-Shin Park, Jae-Jeong Shim, Hong-Sung Chang, Yong Chang
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Publication number: 20060116080Abstract: After receiving the channel allocation information from a base station, a mobile station transmits a first CQI value in a first CQI transmission period and a second CQI value in a second CQI transmission period following the first CQI transmission period. The transmission of the first and second CQI values is a notification of the receipt of the channel allocation information. The mobile station measures and transmits CQI during a third CQI transmission period following the first and second CQI transmission periods.Type: ApplicationFiled: November 30, 2005Publication date: June 1, 2006Inventor: Kwang-Seop Eom
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Patent number: 7039430Abstract: A method for controlling operation modes of a medium access control layer by a mobile subscriber station in a broadband wireless access communication system including the mobile subscriber station and a serving base station providing service to the mobile subscriber station is provided. The method includes the steps of: mode-transiting into an idle mode when there is no data transmission between the serving base station and the mobile subscriber station during a predetermined first time interval in an awake mode; detecting movement of the mobile subscriber station in the idle mode into another paging zone covering a target base station, which is different from a paging zone covering the serving base station; and mode-transiting into the awake mode and performing location update together with the target base station when the movement of the mobile subscriber station is detected.Type: GrantFiled: March 4, 2005Date of Patent: May 2, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Hyon-Goo Kang, Bong-Gee Song, Kwang-Seop Eom, Seung-Eun Hong, Yeong-Moon Son, So-Hyun Kim, Seung-Il Yoon, Tae-Won Kim, Geun-Hwi Lim, Jung-Shin Park, Jae-Jeong Shim, Hong-Sung Chang, Yong Chang