Patents by Inventor Pan-Yuh Joo

Pan-Yuh Joo 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: 9380631
    Abstract: A system and method for state synchronization between a base station and a mobile station in a mobile communication system. A count value indicative of a state change of the base station is received. The received current count value is compared with a previous count value previously received and stored. If the current count value is different from the previous count value, the mobile station performs a network entry procedure with the base station.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: June 28, 2016
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Yeong-Moon Son, Hong-Sung Chang, Pan-Yuh Joo, Jung-Je Son, Jae-Weon Cho, Mi-Hyun Lee, Hyun-Jeong Kang, Song-Nam Hong, Sung-Jin Lee, Hyoung-Kyu Lim, Young-Ho Kim
  • Patent number: 9113493
    Abstract: An apparatus in a Base station (BS) and an apparatus in a Mobile Station (MS) are provided for allocating and requesting, respectively, uplink resources in a wireless communication system. The apparatus in the MS includes a transmitter for sending, to a base station, a predetermined Channel Quality Information CHannel (CQICH) codeword over a pre-allocated CQICH in a silence period, when an uplink bandwidth for an extended real-time Polling Service (ertPS) is not allocated to the mobile station, to inform the base station that the mobile station has data to send; and a receiver for receiving, from the base station, information related to an uplink bandwidth supporting a maximum rate allocated by the base station, in response to the CQICH codeword.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: August 18, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyun-Jeong Kang, Jung-Won Kim, Jung-Je Son, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Chang-Hoi Koo, Pan-Yuh Joo, Young-Ho Kim
  • Patent number: 8730797
    Abstract: A method for forwarding direct message in partial function OFDMA relay system is proposed in present invention. In present invention, the operations like forwarding and reflecting are fixed for the PFRS. Therefore, the BS performs scheduling according to the fixed operations so as to make the PFRS actually has the function of direct message forwarding.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: May 20, 2014
    Assignees: Samsung Electronics Co., Ltd, Beijing Samsung Telecom R&D Center
    Inventors: Eun-Taek Lim, Hyoung-Kyu Lim, Pan-Yuh Joo, Qi Wu, Zongchuang Liang
  • Patent number: 8412200
    Abstract: A handover method of a mobile station in a wireless mobile communication system and a system therefore are provided. The mobile station transmits a handover indication message to a serving base station, receives a ranging response message that comprises authentication information required for the mobile station to authenticate a target base station, receives fast ranging resources and transmits a ranging response acknowledgement (ACK) message, which comprises authentication information required for the target base station to authenticate the mobile station, to the target base station after receiving the fast ranging resources. Accordingly, a handover break time is minimized.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: April 2, 2013
    Assignees: Samsung Electronics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Jung-Je Son, Pan-Yuh Joo, Hyoung-Kyu Lim, Sung-Jin Lee, Hyun-Jeong Kang, Jae-Hyuk Jang, Chung-Gu Kang, Jun-Hyuk Park, Tae-Young Min
  • Patent number: 8351846
    Abstract: A CID management method and apparatus in a multi-hop relay BWA communication system are provided. A BS combines data destined for an RS and data to be relayed to an MS via the RS in a payload, distinguishing the data by CIDs, attaches a relay CID to the payload, and sends the payload with the relay CID to the RS. Among the data of the payload, the RS processes its data and relays to the MS the data destined for the MS by distinguishing them by the CIDs.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: January 8, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Sung-Jin Lee, Jung-Je Son, Hyoung-Kyu Lim, Yeong-Moon Son, Hyun-Jeong Kang, Pan-Yuh Joo, Jun-Young Jung
  • Patent number: 8345608
    Abstract: A system and method for transmitting downlink schedule in a WiMax/WiBro relay system is proposed in present invention. In present invention, the task of transmitting the schedule is dispersed from the BS to both of the BS and RS so that several RS may transmit the schedule items simultaneously and therefore the resource of the system is saved.
    Type: Grant
    Filed: April 14, 2008
    Date of Patent: January 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun-Taek Lim, Qi Wu, Hyoung-Kyu Lim, Pan-Yuh Joo
  • Publication number: 20120287896
    Abstract: An apparatus in a Base station (BS) and an apparatus in a Mobile Station (MS) are provided for allocating and requesting, respectively, uplink resources in a wireless communication system.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 15, 2012
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Jeong KANG, Jung-Won Kim, Jung-Je Son, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Chang-Hoi Koo, Pan-Yuh Joo, Young-Ho Kim
  • Patent number: 8254314
    Abstract: Provided is a device and method for scheduling uplink resources in a wireless communication system supporting VoIP. When its data rate is decreased, an MS notifies a BS of the rate decreased. When increasing its data rate, the MS requests resource allocation to the BS by transmitting a BR header or a CQICH codeword. Compared to the conventional ertPS in which the BS periodically allocates uplink resources to the MS irrespective of the state of the MS, the BS does not allocate uplink resources when the MS transitions form a talk-spurt period to a silence period. Therefore, resources consumption arising from unnecessary bandwidth allocation is reduced.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyun-Jeong Kang, Jung-Won Kim, Jung-Je Son, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Chang-Hoi Koo, Pan-Yuh Joo, Young-Ho Kim
  • Patent number: 8160006
    Abstract: Provided is an apparatus and method for providing a synchronous relay service in a multi-hop relay BWA communication system. In the method, a BS-MS link subframe and an RS-MS link subframe are configured for a first section of a subframe in an ith frame. At least one of a BS-RS link subframe, an RS-RS link subframe and an RS-MS link subframe is configured for a second section of a subframe in the ith frame. The BS-MS link subframe and the RS-MS link subframe are configured for a first section of a subframe in an (i+1)th frame. At least one of the BS-RS link subframe, the RS-RS link subframe and the RS-MS link subframe is configured for a second section of a subframe in the (i+1)th frame.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: April 17, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Young-Bin Chang, Chang-Yoon Oh, Taori Rakesh, Jae-Weon Cho, Hyoung-Kyu Lim, Sung-Jin Lee, Hyun-Jeong Kang, Eun-Taek Lim, Pan-Yuh Joo, Dong-Seek Park, Joon-Young Choi
  • Patent number: 8090012
    Abstract: An apparatus and method for transmitting and receiving Channel Quality Information (CQI) in a communication system. A Base Station (BS) transmits, to a Subscriber Station (SS), a request for CQI of a resource region corresponding to a frequency reuse factor K, which is designated by the BS. The BS then receives, from the SS, the CQI of the resource region corresponding to a channel quality measured by the SS. The channel quality is measured by the SS by measuring a boosted reference signal and compensating the boosted reference signal for a non-boosted signal.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: January 3, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Jae-Hee Cho, Soon-Young Yoon, Jae-Hwan Chang, Ji-Ho Jang, Pan-Yuh Joo, Jang-Hoon Yang, Joong-Ho Jeong, Kwan-Hee Roh, Sang-Hoon Sung
  • Patent number: 8078159
    Abstract: Disclosed are an apparatus and method of a Relay Station (RS) in a multihop relay Broadband Wireless Access (BWA) communication system. The method includes an RS for receiving a signal level threshold of the MS from a Base Station (BS), measuring a signal level of the MS, and transmitting the MS signal level to the BS when the measured signal level is greater than the signal level threshold; and the BS for transmitting the MS signal level threshold to one or more RSs and receiving MS signal levels from the RSs.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: December 13, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyun-Jeong Kang, Jung-Je Son, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Joon-Young Choi, Pan-Yuh Joo
  • Patent number: 8050235
    Abstract: Apparatus and method of providing transparent relay service to a Mobile Station (MS) in a multihop relay Broadband Wireless Access (BWA) communication system. The communication method includes checking, at least one relay station (RS), a sounding channel allocated to an MS by analyzing a message broadcast from a Base Station (BS); measuring, at the BS, an BS-MS signaling level using a sounding signal of the MS, the sounding signal received in the sounding channel; measuring, at the at least one RS, an RS-MS signaling level using a sounding signal of the MS, the sounding signal received in the sounding channel; reporting, at the at least one RS, the RS-MS signaling level measurement value to the BS; and selecting, at the BS, an RS suitable for the MS using the BS-MS signaling level measurement value and at least one RS-MS signaling level measurement value reported from the at least one RS. Accordingly, the BS can select a suitable RS for the MS by taking into account the RS-MS channel status.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: November 1, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hyun-Jeong Kang, Jae-Weon Cho, Sung-Jin Lee, Mi-Hyun Lee, Pan-Yuh Joo, Jun-Young Jung
  • Patent number: 8040826
    Abstract: An apparatus and method for configuring a subframe to support a relay service in a multi-hop relay BWA communication system are provided, in which a first zone of a subframe is configured for at least one of communication between a BS and a first MS within the coverage area of the BS and communication between at least one RS and a second MS within the coverage area of the at least one RS, and a second zone of the subframe is configured for at least one of communication between the BS and the at least one RS and communication between the at least one RS and another RS.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: October 18, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Mi-Hyun Lee, Jae-Weon Cho, Sung-Jin Lee, Hyun-Jeong Kang, Pan-Yuh Joo, Joon-Young Choi, Chang-Yoon Oh, Young-Bin Chang, Eun-Taek Lim
  • Patent number: 8009645
    Abstract: A method of requesting and allocating an upstream bandwidth in an RS in a multi-hop relay BWA communication system is provided. The RS receives an upstream bandwidth request message including an upstream bandwidth from at least one MS for a predetermined time period, detects the requested upstream bandwidth from the upstream bandwidth request message, calculates a total requested upstream bandwidth by summing the requested upstream bandwidth from the at least one MS, generates a new upstream bandwidth request message including the total requested upstream bandwidth, and sends the new upstream bandwidth request message to a BS.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: August 30, 2011
    Assignee: Samsung Electronics., Ltd.
    Inventors: Sung-Jin Lee, Jung-Je Son, Hyoung-Kyu Lim, Yeong-Moon Son, Hyun-Jeong Kang, Young-Ho Kim, Pan-Yuh Joo
  • Patent number: 8000650
    Abstract: An apparatus and method for performing Automatic Retransmission reQuest (ARQ) of a Relay Station (RS) in a wireless communication system using a relay scheme are provided. The method includes receiving data from a transmitter and transmitting the received data to one or more receivers; and receiving Acknowledgment (ACK)/Negative-Acknowledgment (NACK) information for the data received from the one or more receivers and transmitting the received ACK/NACK information to a Base Station (BS).
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: August 16, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Young-Bin Chang, Jae-Weon Cho, Eun-Taek Lim, Sung-Jin Lee, Mi-Hyun Lee, Hyun-Jeong Kang, Chang-Yoon Oh, Cheng Shan, Dong-Seek Park, Pan-Yuh Joo, Joon-Young Choi, Jae-Hyuk Jang
  • Patent number: 7991002
    Abstract: An apparatus and method for implementing a vertical handoff between a WLAN and a broadband wireless communication network are provided. The vertical handoff apparatus includes a base station (BS) of the broadband wireless network and at least one access point (AP) of the WLAN within the cell coverage area of the BS, and a switch for forwarding packets between the BS and the at least one AP and processing a handoff between the BS and the at least one AP.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: August 2, 2011
    Assignees: Samsung Electronics Co., Ltd, Seoul National University Industry Foundation
    Inventors: Sung-Jin Lee, Jung-Je Son, Pan-Yuh Joo, Jun-Young Jung, Chong-Kwon Kim, Joon Yoo
  • Patent number: 7954033
    Abstract: A decoding method in a communication system using a Low Density Parity Check (LDPC) code. The method includes determining whether an LDPC codeword to be decoded is a general LDPC codeword to which a puncturing scheme is not applied or a punctured LDPC codeword to which the puncturing scheme is applied; if the LDPC codeword to be decoded is the punctured LDPC codeword, generating a child parity check matrix according to a mother parity check matrix indicative of a parity check matrix of the general LDPC codeword, and a puncturing pattern applied to the punctured LDPC codeword; and decoding the punctured LDPC codeword according to the child parity check matrix.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Song-Nam Hong, Pan-Yuh Joo, Jung-Je Son, Jae-Weon Cho, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Mi-Hyun Lee, Hyun-Jeong Kang, Young-Ho Kim
  • Patent number: 7954041
    Abstract: An apparatus and method are provided for transmitting a signal in a communication system using a low density parity check (LDPC) code. An LDPC codeword is generated by encoding an information word at a coding rate. A puncturing pattern is generated when a hybrid automatic repeat request (HARQ) scheme to be applied to the LDPC codeword is an incremental redundancy (IR) scheme. An additional pattern is generated when the HARQ scheme to be applied to the LDPC codeword is a partial chase combining (CC) scheme. A signal is transmitted by applying the puncturing pattern to the LDPC codeword at an associated coding rate when the HARQ scheme to be used is the IR scheme. A signal is transmitted by applying the additional pattern to the LDPC codeword at an associated coding rate when the HARQ scheme to be used is the partial CC scheme.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Song-Nam Hong, Pan-Yuh Joo, Jung-Je Son, Jae-Weon Cho, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Mi-Hyun Lee, Hyun-Jeong Kang, Young-Ho Kim
  • Patent number: 7953458
    Abstract: A method for controlling a sleep mode operation by a mobile station (MS) in a communication system. In the sleep mode operation control method, after entering a sleep mode, the MS transitions to an awake state in a listening interval. When there is data to transmit or receive to/from a base station (BS) in the awake state, the MS causes a neutral interval following the listening interval to transition to the awake state, and transmits or receives the data. The neutral interval is an interval where transition to the awake state and sleep state is available according to the data transmission/reception of the MS operating in the sleep mode.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: May 31, 2011
    Assignees: Samsung Electronics Co., Ltd., Korea University Industrial & Academic Collaboration Foundation
    Inventors: Jung-Je Son, Hyoung-kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Pan-Yuh Joo, Bong-Dae Choi
  • Patent number: 7952988
    Abstract: An apparatus and method of controlling an action change gap interval in a multi-hop relay cellular network, includes constructing a first symbol included in a first frame as a first interval for a first action change and a second interval for exchanging data; and constructing a last symbol included in the first frame as a first interval for exchanging data and a second interval for a second action change. Accordingly, the system capacity and the system efficiency can be raised by reducing the overhead due to the action change gap in the cellular network.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: May 31, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Mi-Hyun Lee, Pan-Yuh Joo, Jung-Je Son, Jae-Weon Cho, Hyoung-Kyu Lim, Yeong-Moon Son, Sung-Jin Lee, Hyun-Jeong Kang, Song-Nam Hong, Young-Ho Kim