Patents by Inventor Hwa-Sun You

Hwa-Sun You 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: 9516635
    Abstract: An apparatus and method for operating a fast feedback channel in a broadband wireless communication system are provided. The method includes generating and transmitting a feedback signal through a fast feedback channel of a first mode, determining to switch a mode of the fast feedback channel from the first mode to a second mode, transmitting a signal for requesting the mode switching of the fast feedback channel through the fast feedback channel, and generating and transmitting a feedback signal through a fast feedback channel of the second mode.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: December 6, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Heon Kim, Hwa-Sun You, Hee-Won Kang, Jae-Hee Cho, Si-Hyun Park
  • Patent number: 9107161
    Abstract: A method for performing timing synchronization error compensation by a base station in a communication system, in which if there is a need for timing synchronization error compensation of a user equipment, the base station generates a message related to the timing synchronization error compensation, and broadcasts the generated message to the user equipment. In this manner, the base station can notify the user equipment of the need for timing synchronization error compensation in the communication system.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 11, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Hyun Park, Hwa-Sun You
  • Patent number: 8989312
    Abstract: A channel estimation method of a channel estimation apparatus in a wireless communication system is provided. The method includes predefining a plurality of weight tables about at least one of a speed and a Carrier to Interference-and-Noise Ratio (CINR) using a correlation value considering offset compensation; selecting a weight table to be used for channel estimation based on at least one of the estimated speed and the CINR, from the plurality of weight tables; and multiplying a pilot channel estimation value and the selected weight table, and performing data channel estimation.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Hyun Park, Yon-Woo Yoon, Hwa-Sun You, Hee-Won Kang
  • Patent number: 8923376
    Abstract: An apparatus and a method for estimating a Noise and Interference (NI) power in a communication system are provided. The method includes, calculating average values of impulse responses according to ranging codes, through use of a ranging signal sequence received through a resource allocated to a ranging channel, arranging the average values of the impulse responses according to ranging codes in order of the highest value to the lowest value, and multiplying a ranging code, which corresponds to an impulse response having an (x+1)th peak value among the arranged average values of the impulse responses, by a specific threshold value, and estimating the NI power, wherein “x” represents a number of ranging codes which can be simultaneously received by one ranging channel.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Hyun Park, Hwa-Sun You, Min-Ho Jang, Hee-Won Kang
  • Patent number: 8891398
    Abstract: An apparatus and method for transmitting information through a fast feedback channel in a wireless communications system are provided. The apparatus includes a plurality of mappers for mapping a sequence, corresponding to an index to be fed back, to a first set of resource blocks in a fast feedback channel by using a first mapping pattern and to a second set of resource blocks in the fast feedback channel by using a second mapping pattern, and a transmitter for transmitting the sequence mapped to a plurality of sets of resource blocks, wherein the sequence is mapped to each of the plurality of sets of resource blocks, and wherein each element of the sequence is mapped to each resource block.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: November 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-Sun You, Hee-Won Kang, Jae-Hee Cho, Sang-Heon Kim
  • Patent number: 8873472
    Abstract: A method and system for allocating resources in a communication system are provided. The system includes a Base Station (BS) for allocating persistent resources included in a persistent resource area to one or more a Mobile Stations (MS) using the persistent resource area, for allocating an Identifier (ID) indicating an allocation order of the persistent resources to each of the one or more the MS using the persistent resource area, for transmitting resource allocation information including the ID and the number of slots included in the persistent resources to each of the one or more MSs using the persistent resource area, and for allocating dynamic resources to one or more MSs using a dynamic resource area, after the persistent resource allocation is completed for all of the one or more MSs using the persistent resource area. The persistent resource area includes successive persistent resources along a time axis and along a frequency axis.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: October 28, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Won Kang, Hwa-Sun You, Young-Bo Cho
  • Publication number: 20140286271
    Abstract: An apparatus and method for operating a fast feedback channel in a broadband wireless communication system are provided. The method includes generating and transmitting a feedback signal through a fast feedback channel of a first mode, determining to switch a mode of the fast feedback channel from the first mode to a second mode, transmitting a signal for requesting the mode switching of the fast feedback channel through the fast feedback channel, and generating and transmitting a feedback signal through a fast feedback channel of the second mode.
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventors: Sang-Heon KIM, Hwa-Sun YOU, Hee-Won KANG, Jae-Hee CHO, Si-Hyun PARK
  • Patent number: 8755464
    Abstract: A method and apparatus for performing channel estimation in a wireless communication system, in which a channel estimate of each pilot tone included in adjacent first and second resource allocation blocks is calculated. Channel estimates of first pilot tones are detected, which have a predetermined subcarrier spacing or less from the second resource allocation block, channel estimates of second pilot tones are detected; and which have a predetermined subcarrier spacing or less from the first resource allocation block. The channel estimates of the first and second pilot tones are updated, and channel estimation is then performed using the updated channel estimates.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Si-Hyun Park, Hwa-Sun You, Hee-Won Kang
  • Patent number: 8750277
    Abstract: An apparatus and method for operating a fast feedback channel in a broadband wireless communication system are provided. The method includes generating and transmitting a feedback signal through a fast feedback channel of a first mode, determining to switch a mode of the fast feedback channel from the first mode to a second mode, transmitting a signal for requesting the mode switching of the fast feedback channel through the fast feedback channel, and generating and transmitting a feedback signal through a fast feedback channel of the second mode.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: June 10, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sang-Heon Kim, Hwa-Sun You, Hee-Won Kang, Jae-Hee Cho, Si-Hyun Park
  • Patent number: 8706150
    Abstract: A method and apparatus for power control in a wireless communication system are provided. A Mobile Station (MS) operation method for power control in a wireless communication system includes assigning an UpLink (UL) control channel to the MS from a Base Station (BS), determining a location to receive a Transmit Power Control (TPC) command based on the UL control channel, and receiving a TPC command in the determined location and increasing or decreasing transmit power, thus advantageously being capable of reducing an overhead for power control command assignment information.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jeong-Ho Park, Hwa-Sun You, Hyun-Kyu Yu, Won-Il Roh, Ho-Kyu Choi
  • Patent number: 8675552
    Abstract: An apparatus is capable of transmitting information via an uplink control channel in an Orthogonal Frequency Division Multiple Access (OFDMA) communication system. Uplink control information is encoded to obtain a predetermined bit string. A signal sequence corresponding to the predetermined bit string is generated. The signal sequence is cyclic-shifted according to a predetermined rule. The cyclic-shifted signal sequence is controlled according to a subframe length. Therefore, reception performance deterioration of an uplink control channel allocated to an irregular subframe can be minimized.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: March 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-Sun You, Hee-Won Kang, Jae-Hee Cho
  • Patent number: 8638882
    Abstract: A method and an apparatus for estimating an offset are provided. The method includes determining one of a frequency offset and a timing offset to be estimated first for pilot symbols detected from a received signal, estimating one of the frequency offset and the timing offset for the pilot symbols according to the determination, compensating for an offset of the pilot symbols based on the estimated offset, and estimating remaining one of the frequency offset and the timing offset which is not estimated for the offset compensated pilot symbols.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: January 28, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyo-Yol Park, Yon-Woo Yoon, Hwa-Sun You, Hee-Won Kang
  • Patent number: 8429509
    Abstract: A method and apparatus for determining the reliability of decoded data in a communication system. The method includes calculating a total sum of absolute values corresponding to Log Likelihood Ratio (LLR) values of received data, generating a first value obtained by multiplying the total sum of the absolute values by a predetermined threshold value, performing iterative decoding with respect to the LLR values of the received data, generating a survived path metric value having a maximum value among all path metric values as a decoded result and generating decoded data, comparing the first value with the survived path metric value, and determining whether the decoded data has suitable reliability according to the compared result.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: April 23, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Min-Ho Jang, Hwa-Sun You, Hee-Won Kang
  • Patent number: 8345566
    Abstract: An apparatus and method for transmitting and receiving information through a fast feedback channel in a broadband wireless communications system are provided. The apparatus includes a generator for generating a quasi-orthogonal signal stream corresponding to a codeword to be fed back, a plurality of mappers for mapping the quasi-orthogonal signal stream to a plurality of bundles in the fast feedback channel by using different mapping patterns, and a transmitter for transmitting the quasi-orthogonal signal stream mapped to the plurality of bundles.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: January 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-Sun You, Hee-Won Kang, Jae-Hee Cho, Sang-Heon Kim
  • Patent number: 8315257
    Abstract: An apparatus and method for transmitting a voice packet in a wireless communication network are provided. The method includes generating voice data of a fixed length, which includes a voice packet having a length that is determined according to a rate of the voice packet, and a Forward Error Correction (FEC) code, and transmitting the generated voice data through a fixed resource.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: November 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hee-Won Kang, Hwa-Sun You, Young-Bo Cho
  • Publication number: 20120218933
    Abstract: A method for performing timing synchronization error compensation by a base station in a communication system, in which if there is a need for timing synchronization error compensation of a user equipment, the base station generates a message related to the timing synchronization error compensation, and broadcasts the generated message to the user equipment. In this manner, the base station can notify the user equipment of the need for timing synchronization error compensation in the communication system.
    Type: Application
    Filed: October 29, 2010
    Publication date: August 30, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Si-Hyun Park, Hwa-Sun You
  • Publication number: 20120207254
    Abstract: A channel estimation method of a channel estimation apparatus in a wireless communication system is provided. The method includes predefining a plurality of weight tables about at least one of a speed and a Carrier to Interference-and-Noise Ratio (CINR) using a correlation value considering offset compensation; selecting a weight table to be used for channel estimation based on at least one of the estimated speed and the CINR, from the plurality of weight tables; and multiplying a pilot channel estimation value and the selected weight table, and performing data channel estimation.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 16, 2012
    Inventors: Si-Hyun Park, Yon-Woo Yoon, Hwa-Sun You, Hee-Won Kang
  • Publication number: 20120207257
    Abstract: A method and an apparatus for estimating an offset are provided. The method includes determining one of a frequency offset and a timing offset to be estimated first for pilot symbols detected from a received signal, estimating one of the frequency offset and the timing offset for the pilot symbols according to the determination, compensating for an offset of the pilot symbols based on the estimated offset, and estimating remaining one of the frequency offset and the timing offset which is not estimated for the offset compensated pilot symbols.
    Type: Application
    Filed: February 9, 2012
    Publication date: August 16, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Hyo-Yol PARK, Yon-Woo YOON, Hwa-Sun YOU, Hee-Won KANG
  • Publication number: 20120207253
    Abstract: A method and apparatus for performing channel estimation in a wireless communication system, in which a channel estimate of each pilot tone included in adjacent first and second resource allocation blocks is calculated. Channel estimates of first pilot tones are detected, which have a predetermined subcarrier spacing or less from the second resource allocation block, channel estimates of second pilot tones are detected; and which have a predetermined subcarrier spacing or less from the first resource allocation block. The channel estimates of the first and second pilot tones are updated, and channel estimation is then performed using the updated channel estimates.
    Type: Application
    Filed: February 10, 2012
    Publication date: August 16, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Si-Hyun PARK, Hwa-Sun YOU, Hee-Won KANG
  • Patent number: 8223960
    Abstract: A method and apparatus for removing an echo signal in a signal transmission/reception apparatus of a communication system are provided. A signal transmission/reception apparatus determines an echo channel impulse response using a reception signal, generates an echo signal removing coefficient using the echo channel impulse response, removes an echo signal from the reception signal using the echo signal removing coefficient, and transmits a signal in which the echo signal is removed.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: July 17, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-Sun You, Hee-Won Kang, Jae-Bum Kim, Jung-Woo Ku