Patents by Inventor Ki-Seon Ryu

Ki-Seon Ryu 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).

  • Method for allocating control channels
    Patent number: 8494570
    Abstract: A frame structure used in a wireless access system and a method for allocating uplink control channels are provided. The method transmits a super-MAP including information regarding a control channel allocation method and control channel allocation information to a receiving end and receives a control signal through an uplink subframe indicated by the control channel allocation information using the control channel allocation method. Thus, the transmitting end can correctly allocate a control channel for each downlink burst.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: July 23, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jeong Ki Kim, Ki Seon Ryu, Young Soo Yuk
  • Method of paging using header
    Patent number: 8488543
    Abstract: A method for paging in a wireless access system is disclosed. A method for efficiently paging a mobile station of an idle mode comprises allocating an identifier of a large paging group and an identifier of a specific one of small paging groups included in the large paging group to a broadcast channel region and transmitting a header including the broadcast channel region to the terminal. Accordingly, the present invention enables efficient paging.
    Type: Grant
    Filed: May 8, 2009
    Date of Patent: July 16, 2013
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Ki Seon Ryu, Yong Ho Kim, Young Soo Yuk
  • Method for transmitting and receiving broadcasting channels
    Patent number: 8483199
    Abstract: A method for transmitting and receiving a broadcast channel is disclosed. A wireless access system, a method for effectively transmitting and receiving a broadcast channel, a variety of superframe structures, and a super frame header structure are disclosed. A method for effectively receiving a broadcast channel includes receiving, by a mobile station (MS), a first broadcast channel including first information about a modulation and coding scheme (MCS) applied to a second broadcast channel, and receiving the second broadcast channel using the first information. The first broadcast channel is transmitted using a fixed modulation and coding scheme (MCS) value, and the second broadcast channel is transmitted using a variable modulation and coding scheme (MCS) value.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: July 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Young Soo Yuk, Ki Seon Ryu, In Uk Jung, Jeong Ki Kim, Yong Ho Kim
  • Apparatus and method for transmitting a MAC PDU based on MAC header type information
    Patent number: 8483136
    Abstract: An Apparatus and methods for communicating in a wireless access system using a medium access control protocol data unit (MAC PDU) is disclosed.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: July 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Young Soo Yuk, Ki Seon Ryu, Jeong Ki Kim, Yong Ho Kim
  • Method of emergency service request using control channel
    Patent number: 8483151
    Abstract: A method for performing emergency communication between a mobile station and a base station in a wireless communication system is disclosed. The method includes receiving allocation of a contention-free-based control channel from a base station, and transmitting an emergency service request message through the contention-free-based control channel. The contention-free-based control channel may be one of a channel quality indicator (CQI) channel and an acknowledgement/negative-acknowledgement (ACK/NACK) channel. Since the emergency service request message can be transmitted through a contention-free dedicated code and a dedicated region, a procedure is simplified and power resources of the mobile station can be saved.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: July 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Ae Ran Youn, Yong Ho Kim, Ki Seon Ryu
  • Location update method and mobile station using the same
    Patent number: 8483709
    Abstract: A location update method and a mobile station using the same are disclosed. The location method includes receiving a message including femto Base Station (BS) list information from a macro base station, receiving a preamble including an IDentifier (ID) of a first femto BS from the first femto BS during a predetermined interval, and updating a location to the first femto BS, if the ID of the femto BS is identical to one of IDs included in the femto BS list information. The femto BS list information may include IDs of one or more femto BSs included in the macro BS.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: July 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Ki Seon Ryu, In Uk Jung, Yong Ho Kim, Jin Lee
  • Method of location update in a wireless communication system
    Patent number: 8483723
    Abstract: A location update method in a wireless communication system is disclosed. The method for performing a location update in a mobile station (MS) of the wireless communication system including a femtocell includes receiving a deregistration command (DREG-CMD) message that includes not only a paging group identifier (ID) of a first femtocell base station (BS) in which the MS stays but also a paging group ID of a macro BS including the first femtocell BS, initiating a location update delay timer while the MS moves from the first femtocell area to a second femtocell area having a paging group ID different from that of the first femtocell, and performing location update according to an operation of the location update delay timer.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: July 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Tae Gon Kong, Yong Ho Kim, Ki Seon Ryu
  • Method and apparatus for supporting a sleep mode action of a mobile station in a wireless mobile communication system
    Patent number: 8478362
    Abstract: A method of performing actions related to handover by a mobile station (MS) in a wireless mobile communication system is disclosed. More specifically, the MS receives information from a base station (BS), wherein the information includes at least one action for performing handover and at least one condition corresponding to the at least one action. Furthermore, the MS transmits a request message to perform the at least one action based on the received information from the BS and receives a response message in response to the request message. Lastly, the MS performs the at least one action according to the received response message.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: July 2, 2013
    Assignee: LG Electronics Inc.
    Inventors: Beom Joon Kim, Ki Seon Ryu
  • Method of transmitting and receiving ARQ feedback information
    Patent number: 8479073
    Abstract: A method of transmitting and receiving Automatic Repeat reQuest (ARQ) feedback information in a wireless communication system is disclosed. The method of transmitting ARQ feedback information in a wireless communication system includes, at a transmitter, transmitting a Protocol Data Unit (PDU) including an extended header including an ARQ feedback Polling Request (APR) field indicating whether or not the transmitter makes a request for ARQ feedback polling, and receiving an Acknowledgement (ACK) from a receiver if the APR field indicates that the transmitter makes the request for ARQ feedback polling to the receiver.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: July 2, 2013
    Assignee: LG Electronics Inc.
    Inventors: Eun Jong Lee, Ki Seon Ryu, Doo Hyun Sung, Yong Ho Kim, Young Soo Yuk
  • Method for handover with consideration of load status of cells
    Patent number: 8472408
    Abstract: A method for a handover with consideration of load status of cells is disclosed. The method for intra handover with consideration of load status of cells by a mobile station in a wireless communication system includes receiving a neighbor advertisement (MOB-NBR-ADV) message including load status information of neighbor cells from a serving base station, and performing intra handover according to the load status information of neighbor cells if there is at least a neighbor cell of which channel quality is equal to or higher than a handover threshold for a time duration among neighbor cells in an intra network.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: June 25, 2013
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Jin Lee, Yong Ho Kim, Ki Seon Ryu
  • Method for handover with consideration of the neighbor base stations' circumstances
    Patent number: 8452288
    Abstract: A method for a handover with consideration of neighbor base stations' circumstances is disclosed. The method for a handover with consideration of neighbor base stations' circumstances by a mobile station in a wireless communication system includes transmitting a handover request (MOB_MSHO-REQ) message to a serving base station, receiving a handover response (MOB_BSHO-RSP) message including a base stations list made with consideration of the neighbor base station's circumstances from the serving base station, and selecting a base station among neighbor base stations except some base stations of the base stations list and transmitting a handover indicate (MOB_HO_IND) message including a information of the selected base station to the serving base station.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: May 28, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hee Jeong Cho, Ki Seon Ryu
  • METHOD AND APPARATUS FOR TRANSMITTING FEEDBACK INFORMATION IN WIRELESS COMMUNICATION SYSTEM
    Publication number: 20130128767
    Abstract: A method and an apparatus for transmitting feedback of a mobile station (MS) in a wireless communication system supporting a multi-carrier operation are provided. The method includes transmitting feedback information to a base station, and in this case, the feedback information is transmitted through a MAC control message and the feedback information includes carrier information of an activation carrier related to the MAC control message.
    Type: Application
    Filed: August 9, 2011
    Publication date: May 23, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: Jin Young Chun, Ki Seon Ryu, Jin Sam Kwak, Young Soo Yuk, Wook Bong Lee, Bin Chul Ihm
  • Method for performing zone switching in broadband wireless access system
    Patent number: 8446878
    Abstract: A method and mobile stations for performing a zone switch, are discussed. According to an embodiment, the method includes: receiving, at the mobile station and from a target base station configured to operate in accordance with a first and a second protocol, a ranging response message of the first protocol including zone switch parameters used to perform zone switch from a first zone of the target base station corresponding to the first protocol to a second zone of the target base station corresponding to the second protocol; and performing, at the mobile station, the zone switch from the first zone to the second zone using the zone switch parameters.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 21, 2013
    Assignee: LG Electronics Inc.
    Inventors: In Uk Jung, Yong Ho Kim, Ki Seon Ryu, Jeong Ki Kim
  • Method for acquiring information for media independent handover
    Patent number: 8447306
    Abstract: This document is related to a method for acquiring information for media independent handover. More specifically the method comprises: submitting a media independent handover (MIH) query to a base station (BS) by sending a first request message, and receiving a response to the MIH query. Because the first request message is used for authorization, preferably the PKM message, the MS can acquire information for handover between heterogeneous networks before the MS finishes the network entry.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: May 21, 2013
    Assignee: LG Electronics Inc.
    Inventors: Jin Lee, Yong Ho Kim, Ki Seon Ryu
  • Method for updating location in a wireless communication system
    Patent number: 8442561
    Abstract: A method for updating a location in a wireless communication system is disclosed. The method includes transmitting a request message to enter idle mode, receiving a response message including an Identifier (ID) of a first paging group and an ID of a second paging group in response to the request message, activating a paging group location update timer, when the MS leaves an area of the first paging group, and updating a location according to the paging group location update timer.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: May 14, 2013
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Tae Gon Kong, Yong Ho Kim, Ki Seon Ryu
  • METHOD FOR PERFORMING A HANDOVER THROUGH ZONE-SWITCHING IN A BROADBAND WIRELESS ACCESS SYSTEM
    Publication number: 20130109388
    Abstract: The present invention relates to a broadband wireless access system, and more particularly, to a method for performing a handover through zone-switching. According to one embodiment of the present invention, the method in which an advanced mobile station (AMS) performs a handover from a legacy serving base station through zone-switching in a broadband wireless access system comprises: a step of receiving, from a legacy zone (L-zone) of a target advanced base station (ABS), a message of a response to a request for ranging (RNG-RSP), containing information on a zone-switching time: and a step of starting switching to an advanced mobile station support zone (M-zone) at the point of time indicated by the information on a zone-switching time.
    Type: Application
    Filed: December 21, 2010
    Publication date: May 2, 2013
    Applicant: LG ELECTRONICS INC.
    Inventors: In Uk Jung, Yong Ho Kim, Ki Seon Ryu
  • Method of transmitting and receiving uplink data using transmission of profile indexes
    Patent number: 8422454
    Abstract: A device and method for exchanging a signal via a channel quality indicator channel (CQICH) between a base station and mobile station. The method includes: configuring periodic transmission times for the CQICH; receiving, from the mobile station, information indicating a time set, the time set including a subset of the periodic transmission times; and receiving an index among plural indexes via the CQICH. If the index is received at a time within the time set, the index is interpreted as being band width request information. If the index is received at a time not within the time set, the index is interpreted as being channel quality information.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: April 16, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hee Jeong Cho, Ki Seon Ryu
  • Method and apparatus of operating in idle mode in wireless communication system
    Patent number: 8423054
    Abstract: A method of monitoring a paging message in a wireless communication system, which is performed by a mobile station operating in an idle mode including a paging listening interval and a paging unavailable interval, includes receiving a segment of the paging message comprising a plurality of segments during the paging listening interval, the received segment of the paging message including an extension flag indicating whether a remaining segment of the paging message exists; monitoring at least one subsequent subframe or frame to receive the remaining segment of the paging message while the mobile station remains awake if the extension flag indicates that the remaining segment of the paging message exists; and entering the paging unavailable interval if the mobile station is not paged after receiving all segments of the paging message.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 16, 2013
    Assignee: LG Electronics Inc.
    Inventors: Gi Won Park, Jeongki Kim, Ronny Yongho Kim, Ki Seon Ryu
  • Method and apparatus for transmitting and receiving control information in a wireless communication system
    Patent number: 8418025
    Abstract: A method and apparatus for transmitting and receiving control information in a wireless communication system are disclosed. The control information transmission method includes masking a Cyclic Redundancy Check (CRC) by a CRC mask including a bit stream of a predetermined length and an indicator indicating the bit stream, and transmitting control information including the masked CRC to at least one Mobile Station (MS). The indicator indicates whether the bit stream included in the CRC mask includes a Random Access IDentifier (RAID).
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 9, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hee Jeong Cho, Ki Seon Ryu, Su Nam Kim, Eun Jong Lee, Yong Ho Kim, Young Soo Yuk
  • Method of allocating radio resource in broadband wireless access system
    Patent number: 8412223
    Abstract: A method and device for allocating resource regions in a broadband wireless access system. The method includes receiving a message from a base station by a mobile terminal. The message includes allocation information used to collectively and consecutively allocate identical resource regions of consecutive frames. The identical resource regions include identical Orthogonal Frequency-Division Multiple Access (OFDMA) symbols and identical subchannels within each of the identical resource regions. The identical OFDMA symbols are a subset of a total number of OFDMA symbols within each of the identical resource regions. The identical subchannels are a subset of a total number of subchannels within each of the identical resource regions. The method also includes transmitting or receiving data by the mobile terminal through the allocated identical resource regions.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: April 2, 2013
    Assignee: LG Electronics Inc.
    Inventors: Hee Jeong Cho, Ki Seon Ryu, Jae Won Lim, Jeong Ki Kim